diff options
Diffstat (limited to 'vendor/github.com/hashicorp/terraform/vendor/google.golang.org')
59 files changed, 6990 insertions, 2063 deletions
diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/genproto/LICENSE b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/genproto/LICENSE new file mode 100644 index 00000000..d6456956 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/genproto/LICENSE @@ -0,0 +1,202 @@ + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go new file mode 100644 index 00000000..40e79375 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/genproto/googleapis/rpc/status/status.pb.go @@ -0,0 +1,143 @@ +// Code generated by protoc-gen-go. DO NOT EDIT. +// source: google/rpc/status.proto + +/* +Package status is a generated protocol buffer package. + +It is generated from these files: + google/rpc/status.proto + +It has these top-level messages: + Status +*/ +package status + +import proto "github.com/golang/protobuf/proto" +import fmt "fmt" +import math "math" +import google_protobuf "github.com/golang/protobuf/ptypes/any" + +// Reference imports to suppress errors if they are not otherwise used. +var _ = proto.Marshal +var _ = fmt.Errorf +var _ = math.Inf + +// This is a compile-time assertion to ensure that this generated file +// is compatible with the proto package it is being compiled against. +// A compilation error at this line likely means your copy of the +// proto package needs to be updated. +const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package + +// The `Status` type defines a logical error model that is suitable for different +// programming environments, including REST APIs and RPC APIs. It is used by +// [gRPC](https://github.com/grpc). The error model is designed to be: +// +// - Simple to use and understand for most users +// - Flexible enough to meet unexpected needs +// +// # Overview +// +// The `Status` message contains three pieces of data: error code, error message, +// and error details. The error code should be an enum value of +// [google.rpc.Code][google.rpc.Code], but it may accept additional error codes if needed. The +// error message should be a developer-facing English message that helps +// developers *understand* and *resolve* the error. If a localized user-facing +// error message is needed, put the localized message in the error details or +// localize it in the client. The optional error details may contain arbitrary +// information about the error. There is a predefined set of error detail types +// in the package `google.rpc` which can be used for common error conditions. +// +// # Language mapping +// +// The `Status` message is the logical representation of the error model, but it +// is not necessarily the actual wire format. When the `Status` message is +// exposed in different client libraries and different wire protocols, it can be +// mapped differently. For example, it will likely be mapped to some exceptions +// in Java, but more likely mapped to some error codes in C. +// +// # Other uses +// +// The error model and the `Status` message can be used in a variety of +// environments, either with or without APIs, to provide a +// consistent developer experience across different environments. +// +// Example uses of this error model include: +// +// - Partial errors. If a service needs to return partial errors to the client, +// it may embed the `Status` in the normal response to indicate the partial +// errors. +// +// - Workflow errors. A typical workflow has multiple steps. Each step may +// have a `Status` message for error reporting purpose. +// +// - Batch operations. If a client uses batch request and batch response, the +// `Status` message should be used directly inside batch response, one for +// each error sub-response. +// +// - Asynchronous operations. If an API call embeds asynchronous operation +// results in its response, the status of those operations should be +// represented directly using the `Status` message. +// +// - Logging. If some API errors are stored in logs, the message `Status` could +// be used directly after any stripping needed for security/privacy reasons. +type Status struct { + // The status code, which should be an enum value of [google.rpc.Code][google.rpc.Code]. + Code int32 `protobuf:"varint,1,opt,name=code" json:"code,omitempty"` + // A developer-facing error message, which should be in English. Any + // user-facing error message should be localized and sent in the + // [google.rpc.Status.details][google.rpc.Status.details] field, or localized by the client. + Message string `protobuf:"bytes,2,opt,name=message" json:"message,omitempty"` + // A list of messages that carry the error details. There will be a + // common set of message types for APIs to use. + Details []*google_protobuf.Any `protobuf:"bytes,3,rep,name=details" json:"details,omitempty"` +} + +func (m *Status) Reset() { *m = Status{} } +func (m *Status) String() string { return proto.CompactTextString(m) } +func (*Status) ProtoMessage() {} +func (*Status) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} } + +func (m *Status) GetCode() int32 { + if m != nil { + return m.Code + } + return 0 +} + +func (m *Status) GetMessage() string { + if m != nil { + return m.Message + } + return "" +} + +func (m *Status) GetDetails() []*google_protobuf.Any { + if m != nil { + return m.Details + } + return nil +} + +func init() { + proto.RegisterType((*Status)(nil), "google.rpc.Status") +} + +func init() { proto.RegisterFile("google/rpc/status.proto", fileDescriptor0) } + +var fileDescriptor0 = []byte{ + // 209 bytes of a gzipped FileDescriptorProto + 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x12, 0x4f, 0xcf, 0xcf, 0x4f, + 0xcf, 0x49, 0xd5, 0x2f, 0x2a, 0x48, 0xd6, 0x2f, 0x2e, 0x49, 0x2c, 0x29, 0x2d, 0xd6, 0x2b, 0x28, + 0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x82, 0x48, 0xe8, 0x15, 0x15, 0x24, 0x4b, 0x49, 0x42, 0x15, 0x81, + 0x65, 0x92, 0x4a, 0xd3, 0xf4, 0x13, 0xf3, 0x2a, 0x21, 0xca, 0x94, 0xd2, 0xb8, 0xd8, 0x82, 0xc1, + 0xda, 0x84, 0x84, 0xb8, 0x58, 0x92, 0xf3, 0x53, 0x52, 0x25, 0x18, 0x15, 0x18, 0x35, 0x58, 0x83, + 0xc0, 0x6c, 0x21, 0x09, 0x2e, 0xf6, 0xdc, 0xd4, 0xe2, 0xe2, 0xc4, 0xf4, 0x54, 0x09, 0x26, 0x05, + 0x46, 0x0d, 0xce, 0x20, 0x18, 0x57, 0x48, 0x8f, 0x8b, 0x3d, 0x25, 0xb5, 0x24, 0x31, 0x33, 0xa7, + 0x58, 0x82, 0x59, 0x81, 0x59, 0x83, 0xdb, 0x48, 0x44, 0x0f, 0x6a, 0x21, 0xcc, 0x12, 0x3d, 0xc7, + 0xbc, 0xca, 0x20, 0x98, 0x22, 0xa7, 0x38, 0x2e, 0xbe, 0xe4, 0xfc, 0x5c, 0x3d, 0x84, 0xa3, 0x9c, + 0xb8, 0x21, 0xf6, 0x06, 0x80, 0x94, 0x07, 0x30, 0x46, 0x99, 0x43, 0xa5, 0xd2, 0xf3, 0x73, 0x12, + 0xf3, 0xd2, 0xf5, 0xf2, 0x8b, 0xd2, 0xf5, 0xd3, 0x53, 0xf3, 0xc0, 0x86, 0xe9, 0x43, 0xa4, 0x12, + 0x0b, 0x32, 0x8b, 0x91, 0xfc, 0x69, 0x0d, 0xa1, 0x16, 0x31, 0x31, 0x07, 0x05, 0x38, 0x27, 0xb1, + 0x81, 0x55, 0x1a, 0x03, 0x02, 0x00, 0x00, 0xff, 0xff, 0xa4, 0x53, 0xf0, 0x7c, 0x10, 0x01, 0x00, + 0x00, +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/AUTHORS b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/AUTHORS new file mode 100644 index 00000000..e491a9e7 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/AUTHORS @@ -0,0 +1 @@ +Google Inc. diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/CONTRIBUTING.md b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/CONTRIBUTING.md index 36cd6f75..a5c6e06e 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/CONTRIBUTING.md +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/CONTRIBUTING.md @@ -1,46 +1,32 @@ # How to contribute -We definitely welcome patches and contribution to grpc! Here are some guidelines -and information about how to do so. +We definitely welcome your patches and contributions to gRPC! -## Sending patches - -### Getting started - -1. Check out the code: - - $ go get google.golang.org/grpc - $ cd $GOPATH/src/google.golang.org/grpc - -1. Create a fork of the grpc-go repository. -1. Add your fork as a remote: - - $ git remote add fork git@github.com:$YOURGITHUBUSERNAME/grpc-go.git - -1. Make changes, commit them. -1. Run the test suite: - - $ make test - -1. Push your changes to your fork: - - $ git push fork ... - -1. Open a pull request. +If you are new to github, please start by reading [Pull Request howto](https://help.github.com/articles/about-pull-requests/) ## Legal requirements In order to protect both you and ourselves, you will need to sign the [Contributor License Agreement](https://cla.developers.google.com/clas). -## Filing Issues -When filing an issue, make sure to answer these five questions: - -1. What version of Go are you using (`go version`)? -2. What operating system and processor architecture are you using? -3. What did you do? -4. What did you expect to see? -5. What did you see instead? - -### Contributing code -Unless otherwise noted, the Go source files are distributed under the BSD-style license found in the LICENSE file. +## Guidelines for Pull Requests +How to get your contributions merged smoothly and quickly. + +- Create **small PRs** that are narrowly focused on **addressing a single concern**. We often times receive PRs that are trying to fix several things at a time, but only one fix is considered acceptable, nothing gets merged and both author's & review's time is wasted. Create more PRs to address different concerns and everyone will be happy. + +- For speculative changes, consider opening an issue and discussing it first. If you are suggesting a behavioral or API change, consider starting with a [gRFC proposal](https://github.com/grpc/proposal). + +- Provide a good **PR description** as a record of **what** change is being made and **why** it was made. Link to a github issue if it exists. + +- Don't fix code style and formatting unless you are already changing that line to address an issue. PRs with irrelevant changes won't be merged. If you do want to fix formatting or style, do that in a separate PR. + +- Unless your PR is trivial, you should expect there will be reviewer comments that you'll need to address before merging. We expect you to be reasonably responsive to those comments, otherwise the PR will be closed after 2-3 weeks of inactivity. + +- Maintain **clean commit history** and use **meaningful commit messages**. PRs with messy commit history are difficult to review and won't be merged. Use `rebase -i upstream/master` to curate your commit history and/or to bring in latest changes from master (but avoid rebasing in the middle of a code review). + +- Keep your PR up to date with upstream/master (if there are merge conflicts, we can't really merge your change). + +- **All tests need to be passing** before your change can be merged. We recommend you **run tests locally** before creating your PR to catch breakages early on. + +- Exceptions to the rules can be made if there's a compelling reason for doing so. + diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/LICENSE b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/LICENSE index f4988b45..d6456956 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/LICENSE +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/LICENSE @@ -1,28 +1,202 @@ -Copyright 2014, Google Inc. -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are -met: - - * Redistributions of source code must retain the above copyright -notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above -copyright notice, this list of conditions and the following disclaimer -in the documentation and/or other materials provided with the -distribution. - * Neither the name of Google Inc. nor the names of its -contributors may be used to endorse or promote products derived from -this software without specific prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + + Apache License + Version 2.0, January 2004 + http://www.apache.org/licenses/ + + TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION + + 1. Definitions. + + "License" shall mean the terms and conditions for use, reproduction, + and distribution as defined by Sections 1 through 9 of this document. + + "Licensor" shall mean the copyright owner or entity authorized by + the copyright owner that is granting the License. + + "Legal Entity" shall mean the union of the acting entity and all + other entities that control, are controlled by, or are under common + control with that entity. For the purposes of this definition, + "control" means (i) the power, direct or indirect, to cause the + direction or management of such entity, whether by contract or + otherwise, or (ii) ownership of fifty percent (50%) or more of the + outstanding shares, or (iii) beneficial ownership of such entity. + + "You" (or "Your") shall mean an individual or Legal Entity + exercising permissions granted by this License. + + "Source" form shall mean the preferred form for making modifications, + including but not limited to software source code, documentation + source, and configuration files. + + "Object" form shall mean any form resulting from mechanical + transformation or translation of a Source form, including but + not limited to compiled object code, generated documentation, + and conversions to other media types. + + "Work" shall mean the work of authorship, whether in Source or + Object form, made available under the License, as indicated by a + copyright notice that is included in or attached to the work + (an example is provided in the Appendix below). + + "Derivative Works" shall mean any work, whether in Source or Object + form, that is based on (or derived from) the Work and for which the + editorial revisions, annotations, elaborations, or other modifications + represent, as a whole, an original work of authorship. For the purposes + of this License, Derivative Works shall not include works that remain + separable from, or merely link (or bind by name) to the interfaces of, + the Work and Derivative Works thereof. + + "Contribution" shall mean any work of authorship, including + the original version of the Work and any modifications or additions + to that Work or Derivative Works thereof, that is intentionally + submitted to Licensor for inclusion in the Work by the copyright owner + or by an individual or Legal Entity authorized to submit on behalf of + the copyright owner. For the purposes of this definition, "submitted" + means any form of electronic, verbal, or written communication sent + to the Licensor or its representatives, including but not limited to + communication on electronic mailing lists, source code control systems, + and issue tracking systems that are managed by, or on behalf of, the + Licensor for the purpose of discussing and improving the Work, but + excluding communication that is conspicuously marked or otherwise + designated in writing by the copyright owner as "Not a Contribution." + + "Contributor" shall mean Licensor and any individual or Legal Entity + on behalf of whom a Contribution has been received by Licensor and + subsequently incorporated within the Work. + + 2. Grant of Copyright License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + copyright license to reproduce, prepare Derivative Works of, + publicly display, publicly perform, sublicense, and distribute the + Work and such Derivative Works in Source or Object form. + + 3. Grant of Patent License. Subject to the terms and conditions of + this License, each Contributor hereby grants to You a perpetual, + worldwide, non-exclusive, no-charge, royalty-free, irrevocable + (except as stated in this section) patent license to make, have made, + use, offer to sell, sell, import, and otherwise transfer the Work, + where such license applies only to those patent claims licensable + by such Contributor that are necessarily infringed by their + Contribution(s) alone or by combination of their Contribution(s) + with the Work to which such Contribution(s) was submitted. If You + institute patent litigation against any entity (including a + cross-claim or counterclaim in a lawsuit) alleging that the Work + or a Contribution incorporated within the Work constitutes direct + or contributory patent infringement, then any patent licenses + granted to You under this License for that Work shall terminate + as of the date such litigation is filed. + + 4. Redistribution. You may reproduce and distribute copies of the + Work or Derivative Works thereof in any medium, with or without + modifications, and in Source or Object form, provided that You + meet the following conditions: + + (a) You must give any other recipients of the Work or + Derivative Works a copy of this License; and + + (b) You must cause any modified files to carry prominent notices + stating that You changed the files; and + + (c) You must retain, in the Source form of any Derivative Works + that You distribute, all copyright, patent, trademark, and + attribution notices from the Source form of the Work, + excluding those notices that do not pertain to any part of + the Derivative Works; and + + (d) If the Work includes a "NOTICE" text file as part of its + distribution, then any Derivative Works that You distribute must + include a readable copy of the attribution notices contained + within such NOTICE file, excluding those notices that do not + pertain to any part of the Derivative Works, in at least one + of the following places: within a NOTICE text file distributed + as part of the Derivative Works; within the Source form or + documentation, if provided along with the Derivative Works; or, + within a display generated by the Derivative Works, if and + wherever such third-party notices normally appear. The contents + of the NOTICE file are for informational purposes only and + do not modify the License. You may add Your own attribution + notices within Derivative Works that You distribute, alongside + or as an addendum to the NOTICE text from the Work, provided + that such additional attribution notices cannot be construed + as modifying the License. + + You may add Your own copyright statement to Your modifications and + may provide additional or different license terms and conditions + for use, reproduction, or distribution of Your modifications, or + for any such Derivative Works as a whole, provided Your use, + reproduction, and distribution of the Work otherwise complies with + the conditions stated in this License. + + 5. Submission of Contributions. Unless You explicitly state otherwise, + any Contribution intentionally submitted for inclusion in the Work + by You to the Licensor shall be under the terms and conditions of + this License, without any additional terms or conditions. + Notwithstanding the above, nothing herein shall supersede or modify + the terms of any separate license agreement you may have executed + with Licensor regarding such Contributions. + + 6. Trademarks. This License does not grant permission to use the trade + names, trademarks, service marks, or product names of the Licensor, + except as required for reasonable and customary use in describing the + origin of the Work and reproducing the content of the NOTICE file. + + 7. Disclaimer of Warranty. Unless required by applicable law or + agreed to in writing, Licensor provides the Work (and each + Contributor provides its Contributions) on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or + implied, including, without limitation, any warranties or conditions + of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A + PARTICULAR PURPOSE. You are solely responsible for determining the + appropriateness of using or redistributing the Work and assume any + risks associated with Your exercise of permissions under this License. + + 8. Limitation of Liability. In no event and under no legal theory, + whether in tort (including negligence), contract, or otherwise, + unless required by applicable law (such as deliberate and grossly + negligent acts) or agreed to in writing, shall any Contributor be + liable to You for damages, including any direct, indirect, special, + incidental, or consequential damages of any character arising as a + result of this License or out of the use or inability to use the + Work (including but not limited to damages for loss of goodwill, + work stoppage, computer failure or malfunction, or any and all + other commercial damages or losses), even if such Contributor + has been advised of the possibility of such damages. + + 9. Accepting Warranty or Additional Liability. While redistributing + the Work or Derivative Works thereof, You may choose to offer, + and charge a fee for, acceptance of support, warranty, indemnity, + or other liability obligations and/or rights consistent with this + License. However, in accepting such obligations, You may act only + on Your own behalf and on Your sole responsibility, not on behalf + of any other Contributor, and only if You agree to indemnify, + defend, and hold each Contributor harmless for any liability + incurred by, or claims asserted against, such Contributor by reason + of your accepting any such warranty or additional liability. + + END OF TERMS AND CONDITIONS + + APPENDIX: How to apply the Apache License to your work. + + To apply the Apache License to your work, attach the following + boilerplate notice, with the fields enclosed by brackets "[]" + replaced with your own identifying information. (Don't include + the brackets!) The text should be enclosed in the appropriate + comment syntax for the file format. We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright [yyyy] [name of copyright owner] + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/PATENTS b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/PATENTS deleted file mode 100644 index 69b47959..00000000 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/PATENTS +++ /dev/null @@ -1,22 +0,0 @@ -Additional IP Rights Grant (Patents) - -"This implementation" means the copyrightable works distributed by -Google as part of the gRPC project. - -Google hereby grants to You a perpetual, worldwide, non-exclusive, -no-charge, royalty-free, irrevocable (except as stated in this section) -patent license to make, have made, use, offer to sell, sell, import, -transfer and otherwise run, modify and propagate the contents of this -implementation of gRPC, where such license applies only to those patent -claims, both currently owned or controlled by Google and acquired in -the future, licensable by Google that are necessarily infringed by this -implementation of gRPC. This grant does not include claims that would be -infringed only as a consequence of further modification of this -implementation. If you or your agent or exclusive licensee institute or -order or agree to the institution of patent litigation against any -entity (including a cross-claim or counterclaim in a lawsuit) alleging -that this implementation of gRPC or any code incorporated within this -implementation of gRPC constitutes direct or contributory patent -infringement, or inducement of patent infringement, then any patent -rights granted to you under this License for this implementation of gRPC -shall terminate as of the date such litigation is filed. diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/README.md b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/README.md index 39120c20..72c7325c 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/README.md +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/README.md @@ -1,8 +1,8 @@ -#gRPC-Go +# gRPC-Go [](https://travis-ci.org/grpc/grpc-go) [](https://godoc.org/google.golang.org/grpc) -The Go implementation of [gRPC](http://www.grpc.io/): A high performance, open source, general RPC framework that puts mobile and HTTP/2 first. For more information see the [gRPC Quick Start](http://www.grpc.io/docs/) guide. +The Go implementation of [gRPC](https://grpc.io/): A high performance, open source, general RPC framework that puts mobile and HTTP/2 first. For more information see the [gRPC Quick Start: Go](https://grpc.io/docs/quickstart/go.html) guide. Installation ------------ @@ -16,23 +16,7 @@ $ go get google.golang.org/grpc Prerequisites ------------- -This requires Go 1.5 or later. - -A note on the version used: significant performance improvements in benchmarks -of grpc-go have been seen by upgrading the go version from 1.5 to the latest -1.7.1. - -From https://golang.org/doc/install, one way to install the latest version of go is: -``` -$ GO_VERSION=1.7.1 -$ OS=linux -$ ARCH=amd64 -$ curl -O https://storage.googleapis.com/golang/go${GO_VERSION}.${OS}-${ARCH}.tar.gz -$ sudo tar -C /usr/local -xzf go$GO_VERSION.$OS-$ARCH.tar.gz -$ # Put go on the PATH, keep the usual installation dir -$ sudo ln -s /usr/local/go/bin/go /usr/bin/go -$ rm go$GO_VERSION.$OS-$ARCH.tar.gz -``` +This requires Go 1.6 or later. Constraints ----------- @@ -42,9 +26,13 @@ Documentation ------------- See [API documentation](https://godoc.org/google.golang.org/grpc) for package and API descriptions and find examples in the [examples directory](examples/). +Performance +----------- +See the current benchmarks for some of the languages supported in [this dashboard](https://performance-dot-grpc-testing.appspot.com/explore?dashboard=5652536396611584&widget=490377658&container=1286539696). + Status ------ -GA +General Availability [Google Cloud Platform Launch Stages](https://cloud.google.com/terms/launch-stages). FAQ --- diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/backoff.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/backoff.go index c99024ee..090fbe87 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/backoff.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/backoff.go @@ -1,3 +1,21 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + package grpc import ( diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/balancer.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/balancer.go index 9d943fba..cde472c8 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/balancer.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/balancer.go @@ -1,33 +1,18 @@ /* * - * Copyright 2016, Google Inc. - * All rights reserved. + * Copyright 2016 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -35,6 +20,7 @@ package grpc import ( "fmt" + "net" "sync" "golang.org/x/net/context" @@ -60,6 +46,10 @@ type BalancerConfig struct { // use to dial to a remote load balancer server. The Balancer implementations // can ignore this if it does not need to talk to another party securely. DialCreds credentials.TransportCredentials + // Dialer is the custom dialer the Balancer implementation can use to dial + // to a remote load balancer server. The Balancer implementations + // can ignore this if it doesn't need to talk to remote balancer. + Dialer func(context.Context, string) (net.Conn, error) } // BalancerGetOptions configures a Get call. @@ -167,7 +157,7 @@ type roundRobin struct { func (rr *roundRobin) watchAddrUpdates() error { updates, err := rr.w.Next() if err != nil { - grpclog.Printf("grpc: the naming watcher stops working due to %v.\n", err) + grpclog.Warningf("grpc: the naming watcher stops working due to %v.", err) return err } rr.mu.Lock() @@ -183,7 +173,7 @@ func (rr *roundRobin) watchAddrUpdates() error { for _, v := range rr.addrs { if addr == v.addr { exist = true - grpclog.Println("grpc: The name resolver wanted to add an existing address: ", addr) + grpclog.Infoln("grpc: The name resolver wanted to add an existing address: ", addr) break } } @@ -200,7 +190,7 @@ func (rr *roundRobin) watchAddrUpdates() error { } } default: - grpclog.Println("Unknown update.Op ", update.Op) + grpclog.Errorln("Unknown update.Op ", update.Op) } } // Make a copy of rr.addrs and write it onto rr.addrCh so that gRPC internals gets notified. @@ -211,6 +201,10 @@ func (rr *roundRobin) watchAddrUpdates() error { if rr.done { return ErrClientConnClosing } + select { + case <-rr.addrCh: + default: + } rr.addrCh <- open return nil } @@ -233,7 +227,7 @@ func (rr *roundRobin) Start(target string, config BalancerConfig) error { return err } rr.w = w - rr.addrCh = make(chan []Address) + rr.addrCh = make(chan []Address, 1) go func() { for { if err := rr.watchAddrUpdates(); err != nil { @@ -385,6 +379,9 @@ func (rr *roundRobin) Notify() <-chan []Address { func (rr *roundRobin) Close() error { rr.mu.Lock() defer rr.mu.Unlock() + if rr.done { + return errBalancerClosed + } rr.done = true if rr.w != nil { rr.w.Close() diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/call.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/call.go index ba177219..797190f1 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/call.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/call.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -36,13 +21,14 @@ package grpc import ( "bytes" "io" - "math" "time" "golang.org/x/net/context" "golang.org/x/net/trace" "google.golang.org/grpc/codes" + "google.golang.org/grpc/peer" "google.golang.org/grpc/stats" + "google.golang.org/grpc/status" "google.golang.org/grpc/transport" ) @@ -72,14 +58,17 @@ func recvResponse(ctx context.Context, dopts dialOptions, t transport.ClientTran } } for { - if err = recv(p, dopts.codec, stream, dopts.dc, reply, math.MaxInt32, inPayload); err != nil { + if c.maxReceiveMessageSize == nil { + return Errorf(codes.Internal, "callInfo maxReceiveMessageSize field uninitialized(nil)") + } + if err = recv(p, dopts.codec, stream, dopts.dc, reply, *c.maxReceiveMessageSize, inPayload); err != nil { if err == io.EOF { break } return } } - if inPayload != nil && err == io.EOF && stream.StatusCode() == codes.OK { + if inPayload != nil && err == io.EOF && stream.Status().Code() == codes.OK { // TODO in the current implementation, inTrailer may be handled before inPayload in some cases. // Fix the order if necessary. dopts.copts.StatsHandler.HandleRPC(ctx, inPayload) @@ -89,11 +78,7 @@ func recvResponse(ctx context.Context, dopts dialOptions, t transport.ClientTran } // sendRequest writes out various information of an RPC such as Context and Message. -func sendRequest(ctx context.Context, dopts dialOptions, compressor Compressor, callHdr *transport.CallHdr, t transport.ClientTransport, args interface{}, opts *transport.Options) (_ *transport.Stream, err error) { - stream, err := t.NewStream(ctx, callHdr) - if err != nil { - return nil, err - } +func sendRequest(ctx context.Context, dopts dialOptions, compressor Compressor, c *callInfo, callHdr *transport.CallHdr, stream *transport.Stream, t transport.ClientTransport, args interface{}, opts *transport.Options) (err error) { defer func() { if err != nil { // If err is connection error, t will be closed, no need to close stream here. @@ -116,7 +101,13 @@ func sendRequest(ctx context.Context, dopts dialOptions, compressor Compressor, } outBuf, err := encode(dopts.codec, args, compressor, cbuf, outPayload) if err != nil { - return nil, Errorf(codes.Internal, "grpc: %v", err) + return err + } + if c.maxSendMessageSize == nil { + return Errorf(codes.Internal, "callInfo maxSendMessageSize field uninitialized(nil)") + } + if len(outBuf) > *c.maxSendMessageSize { + return Errorf(codes.ResourceExhausted, "grpc: trying to send message larger than max (%d vs. %d)", len(outBuf), *c.maxSendMessageSize) } err = t.Write(stream, outBuf, opts) if err == nil && outPayload != nil { @@ -127,10 +118,10 @@ func sendRequest(ctx context.Context, dopts dialOptions, compressor Compressor, // does not exist.) so that t.Write could get io.EOF from wait(...). Leave the following // recvResponse to get the final status. if err != nil && err != io.EOF { - return nil, err + return err } // Sent successfully. - return stream, nil + return nil } // Invoke sends the RPC request on the wire and returns after response is received. @@ -145,14 +136,18 @@ func Invoke(ctx context.Context, method string, args, reply interface{}, cc *Cli func invoke(ctx context.Context, method string, args, reply interface{}, cc *ClientConn, opts ...CallOption) (e error) { c := defaultCallInfo - if mc, ok := cc.getMethodConfig(method); ok { - c.failFast = !mc.WaitForReady - if mc.Timeout > 0 { - var cancel context.CancelFunc - ctx, cancel = context.WithTimeout(ctx, mc.Timeout) - defer cancel() - } + mc := cc.GetMethodConfig(method) + if mc.WaitForReady != nil { + c.failFast = !*mc.WaitForReady + } + + if mc.Timeout != nil && *mc.Timeout >= 0 { + var cancel context.CancelFunc + ctx, cancel = context.WithTimeout(ctx, *mc.Timeout) + defer cancel() } + + opts = append(cc.dopts.callOptions, opts...) for _, o := range opts { if err := o.before(&c); err != nil { return toRPCErr(err) @@ -163,6 +158,10 @@ func invoke(ctx context.Context, method string, args, reply interface{}, cc *Cli o.after(&c) } }() + + c.maxSendMessageSize = getMaxSize(mc.MaxReqSize, c.maxSendMessageSize, defaultClientMaxSendMessageSize) + c.maxReceiveMessageSize = getMaxSize(mc.MaxRespSize, c.maxReceiveMessageSize, defaultClientMaxReceiveMessageSize) + if EnableTracing { c.traceInfo.tr = trace.New("grpc.Sent."+methodFamily(method), method) defer c.traceInfo.tr.Finish() @@ -179,26 +178,25 @@ func invoke(ctx context.Context, method string, args, reply interface{}, cc *Cli } }() } + ctx = newContextWithRPCInfo(ctx) sh := cc.dopts.copts.StatsHandler if sh != nil { - ctx = sh.TagRPC(ctx, &stats.RPCTagInfo{FullMethodName: method}) + ctx = sh.TagRPC(ctx, &stats.RPCTagInfo{FullMethodName: method, FailFast: c.failFast}) begin := &stats.Begin{ Client: true, BeginTime: time.Now(), FailFast: c.failFast, } sh.HandleRPC(ctx, begin) - } - defer func() { - if sh != nil { + defer func() { end := &stats.End{ Client: true, EndTime: time.Now(), Error: e, } sh.HandleRPC(ctx, end) - } - }() + }() + } topts := &transport.Options{ Last: true, Delay: false, @@ -220,6 +218,9 @@ func invoke(ctx context.Context, method string, args, reply interface{}, cc *Cli if cc.dopts.cp != nil { callHdr.SendCompress = cc.dopts.cp.Type() } + if c.creds != nil { + callHdr.Creds = c.creds + } gopts := BalancerGetOptions{ BlockingWait: !c.failFast, @@ -227,7 +228,7 @@ func invoke(ctx context.Context, method string, args, reply interface{}, cc *Cli t, put, err = cc.getTransport(ctx, gopts) if err != nil { // TODO(zhaoq): Probably revisit the error handling. - if _, ok := err.(*rpcError); ok { + if _, ok := status.FromError(err); ok { return err } if err == errConnClosing || err == errConnUnavailable { @@ -242,19 +243,38 @@ func invoke(ctx context.Context, method string, args, reply interface{}, cc *Cli if c.traceInfo.tr != nil { c.traceInfo.tr.LazyLog(&payload{sent: true, msg: args}, true) } - stream, err = sendRequest(ctx, cc.dopts, cc.dopts.cp, callHdr, t, args, topts) + stream, err = t.NewStream(ctx, callHdr) if err != nil { if put != nil { + if _, ok := err.(transport.ConnectionError); ok { + // If error is connection error, transport was sending data on wire, + // and we are not sure if anything has been sent on wire. + // If error is not connection error, we are sure nothing has been sent. + updateRPCInfoInContext(ctx, rpcInfo{bytesSent: true, bytesReceived: false}) + } + put() + } + if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast { + continue + } + return toRPCErr(err) + } + if peer, ok := peer.FromContext(stream.Context()); ok { + c.peer = peer + } + err = sendRequest(ctx, cc.dopts, cc.dopts.cp, &c, callHdr, stream, t, args, topts) + if err != nil { + if put != nil { + updateRPCInfoInContext(ctx, rpcInfo{ + bytesSent: stream.BytesSent(), + bytesReceived: stream.BytesReceived(), + }) put() - put = nil } // Retry a non-failfast RPC when // i) there is a connection error; or // ii) the server started to drain before this RPC was initiated. - if _, ok := err.(transport.ConnectionError); ok || err == transport.ErrStreamDrain { - if c.failFast { - return toRPCErr(err) - } + if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast { continue } return toRPCErr(err) @@ -262,13 +282,13 @@ func invoke(ctx context.Context, method string, args, reply interface{}, cc *Cli err = recvResponse(ctx, cc.dopts, t, &c, stream, reply) if err != nil { if put != nil { + updateRPCInfoInContext(ctx, rpcInfo{ + bytesSent: stream.BytesSent(), + bytesReceived: stream.BytesReceived(), + }) put() - put = nil } - if _, ok := err.(transport.ConnectionError); ok || err == transport.ErrStreamDrain { - if c.failFast { - return toRPCErr(err) - } + if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast { continue } return toRPCErr(err) @@ -278,9 +298,12 @@ func invoke(ctx context.Context, method string, args, reply interface{}, cc *Cli } t.CloseStream(stream, nil) if put != nil { + updateRPCInfoInContext(ctx, rpcInfo{ + bytesSent: stream.BytesSent(), + bytesReceived: stream.BytesReceived(), + }) put() - put = nil } - return Errorf(stream.StatusCode(), "%s", stream.StatusDesc()) + return stream.Status().Err() } } diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/clientconn.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/clientconn.go index 146166a7..e3f6cb19 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/clientconn.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/clientconn.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -35,7 +20,6 @@ package grpc import ( "errors" - "fmt" "net" "strings" "sync" @@ -43,8 +27,10 @@ import ( "golang.org/x/net/context" "golang.org/x/net/trace" + "google.golang.org/grpc/connectivity" "google.golang.org/grpc/credentials" "google.golang.org/grpc/grpclog" + "google.golang.org/grpc/keepalive" "google.golang.org/grpc/stats" "google.golang.org/grpc/transport" ) @@ -55,8 +41,7 @@ var ( ErrClientConnClosing = errors.New("grpc: the client connection is closing") // ErrClientConnTimeout indicates that the ClientConn cannot establish the // underlying connections within the specified timeout. - // DEPRECATED: Please use context.DeadlineExceeded instead. This error will be - // removed in Q1 2017. + // DEPRECATED: Please use context.DeadlineExceeded instead. ErrClientConnTimeout = errors.New("grpc: timed out when dialing") // errNoTransportSecurity indicates that there is no transport security @@ -78,7 +63,8 @@ var ( errConnClosing = errors.New("grpc: the connection is closing") // errConnUnavailable indicates that the connection is unavailable. errConnUnavailable = errors.New("grpc: the connection is unavailable") - errNoAddr = errors.New("grpc: there is no address available to dial") + // errBalancerClosed indicates that the balancer is closed. + errBalancerClosed = errors.New("grpc: balancer is closed") // minimum time to give a connection to complete minConnectTimeout = 20 * time.Second ) @@ -86,23 +72,57 @@ var ( // dialOptions configure a Dial call. dialOptions are set by the DialOption // values passed to Dial. type dialOptions struct { - unaryInt UnaryClientInterceptor - streamInt StreamClientInterceptor - codec Codec - cp Compressor - dc Decompressor - bs backoffStrategy - balancer Balancer - block bool - insecure bool - timeout time.Duration - scChan <-chan ServiceConfig - copts transport.ConnectOptions + unaryInt UnaryClientInterceptor + streamInt StreamClientInterceptor + codec Codec + cp Compressor + dc Decompressor + bs backoffStrategy + balancer Balancer + block bool + insecure bool + timeout time.Duration + scChan <-chan ServiceConfig + copts transport.ConnectOptions + callOptions []CallOption } +const ( + defaultClientMaxReceiveMessageSize = 1024 * 1024 * 4 + defaultClientMaxSendMessageSize = 1024 * 1024 * 4 +) + // DialOption configures how we set up the connection. type DialOption func(*dialOptions) +// WithInitialWindowSize returns a DialOption which sets the value for initial window size on a stream. +// The lower bound for window size is 64K and any value smaller than that will be ignored. +func WithInitialWindowSize(s int32) DialOption { + return func(o *dialOptions) { + o.copts.InitialWindowSize = s + } +} + +// WithInitialConnWindowSize returns a DialOption which sets the value for initial window size on a connection. +// The lower bound for window size is 64K and any value smaller than that will be ignored. +func WithInitialConnWindowSize(s int32) DialOption { + return func(o *dialOptions) { + o.copts.InitialConnWindowSize = s + } +} + +// WithMaxMsgSize returns a DialOption which sets the maximum message size the client can receive. Deprecated: use WithDefaultCallOptions(MaxCallRecvMsgSize(s)) instead. +func WithMaxMsgSize(s int) DialOption { + return WithDefaultCallOptions(MaxCallRecvMsgSize(s)) +} + +// WithDefaultCallOptions returns a DialOption which sets the default CallOptions for calls over the connection. +func WithDefaultCallOptions(cos ...CallOption) DialOption { + return func(o *dialOptions) { + o.callOptions = append(o.callOptions, cos...) + } +} + // WithCodec returns a DialOption which sets a codec for message marshaling and unmarshaling. func WithCodec(c Codec) DialOption { return func(o *dialOptions) { @@ -194,7 +214,7 @@ func WithTransportCredentials(creds credentials.TransportCredentials) DialOption } // WithPerRPCCredentials returns a DialOption which sets -// credentials which will place auth state on each outbound RPC. +// credentials and places auth state on each outbound RPC. func WithPerRPCCredentials(creds credentials.PerRPCCredentials) DialOption { return func(o *dialOptions) { o.copts.PerRPCCredentials = append(o.copts.PerRPCCredentials, creds) @@ -203,6 +223,7 @@ func WithPerRPCCredentials(creds credentials.PerRPCCredentials) DialOption { // WithTimeout returns a DialOption that configures a timeout for dialing a ClientConn // initially. This is valid if and only if WithBlock() is present. +// Deprecated: use DialContext and context.WithTimeout instead. func WithTimeout(d time.Duration) DialOption { return func(o *dialOptions) { o.timeout = d @@ -231,7 +252,7 @@ func WithStatsHandler(h stats.Handler) DialOption { } } -// FailOnNonTempDialError returns a DialOption that specified if gRPC fails on non-temporary dial errors. +// FailOnNonTempDialError returns a DialOption that specifies if gRPC fails on non-temporary dial errors. // If f is true, and dialer returns a non-temporary error, gRPC will fail the connection to the network // address and won't try to reconnect. // The default value of FailOnNonTempDialError is false. @@ -249,6 +270,13 @@ func WithUserAgent(s string) DialOption { } } +// WithKeepaliveParams returns a DialOption that specifies keepalive paramaters for the client transport. +func WithKeepaliveParams(kp keepalive.ClientParameters) DialOption { + return func(o *dialOptions) { + o.copts.KeepaliveParams = kp + } +} + // WithUnaryInterceptor returns a DialOption that specifies the interceptor for unary RPCs. func WithUnaryInterceptor(f UnaryClientInterceptor) DialOption { return func(o *dialOptions) { @@ -263,25 +291,52 @@ func WithStreamInterceptor(f StreamClientInterceptor) DialOption { } } +// WithAuthority returns a DialOption that specifies the value to be used as +// the :authority pseudo-header. This value only works with WithInsecure and +// has no effect if TransportCredentials are present. +func WithAuthority(a string) DialOption { + return func(o *dialOptions) { + o.copts.Authority = a + } +} + // Dial creates a client connection to the given target. func Dial(target string, opts ...DialOption) (*ClientConn, error) { return DialContext(context.Background(), target, opts...) } // DialContext creates a client connection to the given target. ctx can be used to -// cancel or expire the pending connecting. Once this function returns, the +// cancel or expire the pending connection. Once this function returns, the // cancellation and expiration of ctx will be noop. Users should call ClientConn.Close // to terminate all the pending operations after this function returns. -// This is the EXPERIMENTAL API. func DialContext(ctx context.Context, target string, opts ...DialOption) (conn *ClientConn, err error) { cc := &ClientConn{ target: target, + csMgr: &connectivityStateManager{}, conns: make(map[Address]*addrConn), } + cc.csEvltr = &connectivityStateEvaluator{csMgr: cc.csMgr} cc.ctx, cc.cancel = context.WithCancel(context.Background()) + for _, opt := range opts { opt(&cc.dopts) } + cc.mkp = cc.dopts.copts.KeepaliveParams + + if cc.dopts.copts.Dialer == nil { + cc.dopts.copts.Dialer = newProxyDialer( + func(ctx context.Context, addr string) (net.Conn, error) { + return dialContext(ctx, "tcp", addr) + }, + ) + } + + if cc.dopts.copts.UserAgent != "" { + cc.dopts.copts.UserAgent += " " + grpcUA + } else { + cc.dopts.copts.UserAgent = grpcUA + } + if cc.dopts.timeout > 0 { var cancel context.CancelFunc ctx, cancel = context.WithTimeout(ctx, cc.dopts.timeout) @@ -300,15 +355,16 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn * } }() + scSet := false if cc.dopts.scChan != nil { - // Wait for the initial service config. + // Try to get an initial service config. select { case sc, ok := <-cc.dopts.scChan: if ok { cc.sc = sc + scSet = true } - case <-ctx.Done(): - return nil, ctx.Err() + default: } } // Set defaults. @@ -321,54 +377,47 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn * creds := cc.dopts.copts.TransportCredentials if creds != nil && creds.Info().ServerName != "" { cc.authority = creds.Info().ServerName + } else if cc.dopts.insecure && cc.dopts.copts.Authority != "" { + cc.authority = cc.dopts.copts.Authority } else { - colonPos := strings.LastIndex(target, ":") - if colonPos == -1 { - colonPos = len(target) - } - cc.authority = target[:colonPos] + cc.authority = target } - var ok bool waitC := make(chan error, 1) go func() { - var addrs []Address + defer close(waitC) if cc.dopts.balancer == nil && cc.sc.LB != nil { cc.dopts.balancer = cc.sc.LB } - if cc.dopts.balancer == nil { - // Connect to target directly if balancer is nil. - addrs = append(addrs, Address{Addr: target}) - } else { + if cc.dopts.balancer != nil { var credsClone credentials.TransportCredentials if creds != nil { credsClone = creds.Clone() } config := BalancerConfig{ DialCreds: credsClone, + Dialer: cc.dopts.copts.Dialer, } if err := cc.dopts.balancer.Start(target, config); err != nil { waitC <- err return } ch := cc.dopts.balancer.Notify() - if ch == nil { - // There is no name resolver installed. - addrs = append(addrs, Address{Addr: target}) - } else { - addrs, ok = <-ch - if !ok || len(addrs) == 0 { - waitC <- errNoAddr - return + if ch != nil { + if cc.dopts.block { + doneChan := make(chan struct{}) + go cc.lbWatcher(doneChan) + <-doneChan + } else { + go cc.lbWatcher(nil) } - } - } - for _, a := range addrs { - if err := cc.resetAddrConn(a, false, nil); err != nil { - waitC <- err return } } - close(waitC) + // No balancer, or no resolver within the balancer. Connect directly. + if err := cc.resetAddrConn(Address{Addr: target}, cc.dopts.block, nil); err != nil { + waitC <- err + return + } }() select { case <-ctx.Done(): @@ -378,50 +427,113 @@ func DialContext(ctx context.Context, target string, opts ...DialOption) (conn * return nil, err } } - - // If balancer is nil or balancer.Notify() is nil, ok will be false here. - // The lbWatcher goroutine will not be created. - if ok { - go cc.lbWatcher() + if cc.dopts.scChan != nil && !scSet { + // Blocking wait for the initial service config. + select { + case sc, ok := <-cc.dopts.scChan: + if ok { + cc.sc = sc + } + case <-ctx.Done(): + return nil, ctx.Err() + } } - if cc.dopts.scChan != nil { go cc.scWatcher() } + return cc, nil } -// ConnectivityState indicates the state of a client connection. -type ConnectivityState int +// connectivityStateEvaluator gets updated by addrConns when their +// states transition, based on which it evaluates the state of +// ClientConn. +// Note: This code will eventually sit in the balancer in the new design. +type connectivityStateEvaluator struct { + csMgr *connectivityStateManager + mu sync.Mutex + numReady uint64 // Number of addrConns in ready state. + numConnecting uint64 // Number of addrConns in connecting state. + numTransientFailure uint64 // Number of addrConns in transientFailure. +} -const ( - // Idle indicates the ClientConn is idle. - Idle ConnectivityState = iota - // Connecting indicates the ClienConn is connecting. - Connecting - // Ready indicates the ClientConn is ready for work. - Ready - // TransientFailure indicates the ClientConn has seen a failure but expects to recover. - TransientFailure - // Shutdown indicates the ClientConn has started shutting down. - Shutdown -) +// recordTransition records state change happening in every addrConn and based on +// that it evaluates what state the ClientConn is in. +// It can only transition between connectivity.Ready, connectivity.Connecting and connectivity.TransientFailure. Other states, +// Idle and connectivity.Shutdown are transitioned into by ClientConn; in the begining of the connection +// before any addrConn is created ClientConn is in idle state. In the end when ClientConn +// closes it is in connectivity.Shutdown state. +// TODO Note that in later releases, a ClientConn with no activity will be put into an Idle state. +func (cse *connectivityStateEvaluator) recordTransition(oldState, newState connectivity.State) { + cse.mu.Lock() + defer cse.mu.Unlock() -func (s ConnectivityState) String() string { - switch s { - case Idle: - return "IDLE" - case Connecting: - return "CONNECTING" - case Ready: - return "READY" - case TransientFailure: - return "TRANSIENT_FAILURE" - case Shutdown: - return "SHUTDOWN" - default: - panic(fmt.Sprintf("unknown connectivity state: %d", s)) + // Update counters. + for idx, state := range []connectivity.State{oldState, newState} { + updateVal := 2*uint64(idx) - 1 // -1 for oldState and +1 for new. + switch state { + case connectivity.Ready: + cse.numReady += updateVal + case connectivity.Connecting: + cse.numConnecting += updateVal + case connectivity.TransientFailure: + cse.numTransientFailure += updateVal + } } + + // Evaluate. + if cse.numReady > 0 { + cse.csMgr.updateState(connectivity.Ready) + return + } + if cse.numConnecting > 0 { + cse.csMgr.updateState(connectivity.Connecting) + return + } + cse.csMgr.updateState(connectivity.TransientFailure) +} + +// connectivityStateManager keeps the connectivity.State of ClientConn. +// This struct will eventually be exported so the balancers can access it. +type connectivityStateManager struct { + mu sync.Mutex + state connectivity.State + notifyChan chan struct{} +} + +// updateState updates the connectivity.State of ClientConn. +// If there's a change it notifies goroutines waiting on state change to +// happen. +func (csm *connectivityStateManager) updateState(state connectivity.State) { + csm.mu.Lock() + defer csm.mu.Unlock() + if csm.state == connectivity.Shutdown { + return + } + if csm.state == state { + return + } + csm.state = state + if csm.notifyChan != nil { + // There are other goroutines waiting on this channel. + close(csm.notifyChan) + csm.notifyChan = nil + } +} + +func (csm *connectivityStateManager) getState() connectivity.State { + csm.mu.Lock() + defer csm.mu.Unlock() + return csm.state +} + +func (csm *connectivityStateManager) getNotifyChan() <-chan struct{} { + csm.mu.Lock() + defer csm.mu.Unlock() + if csm.notifyChan == nil { + csm.notifyChan = make(chan struct{}) + } + return csm.notifyChan } // ClientConn represents a client connection to an RPC server. @@ -432,13 +544,51 @@ type ClientConn struct { target string authority string dopts dialOptions + csMgr *connectivityStateManager + csEvltr *connectivityStateEvaluator // This will eventually be part of balancer. mu sync.RWMutex sc ServiceConfig conns map[Address]*addrConn + // Keepalive parameter can be updated if a GoAway is received. + mkp keepalive.ClientParameters } -func (cc *ClientConn) lbWatcher() { +// WaitForStateChange waits until the connectivity.State of ClientConn changes from sourceState or +// ctx expires. A true value is returned in former case and false in latter. +// This is an EXPERIMENTAL API. +func (cc *ClientConn) WaitForStateChange(ctx context.Context, sourceState connectivity.State) bool { + ch := cc.csMgr.getNotifyChan() + if cc.csMgr.getState() != sourceState { + return true + } + select { + case <-ctx.Done(): + return false + case <-ch: + return true + } +} + +// GetState returns the connectivity.State of ClientConn. +// This is an EXPERIMENTAL API. +func (cc *ClientConn) GetState() connectivity.State { + return cc.csMgr.getState() +} + +// lbWatcher watches the Notify channel of the balancer in cc and manages +// connections accordingly. If doneChan is not nil, it is closed after the +// first successfull connection is made. +func (cc *ClientConn) lbWatcher(doneChan chan struct{}) { + defer func() { + // In case channel from cc.dopts.balancer.Notify() gets closed before a + // successful connection gets established, don't forget to notify the + // caller. + if doneChan != nil { + close(doneChan) + } + }() + for addrs := range cc.dopts.balancer.Notify() { var ( add []Address // Addresses need to setup connections. @@ -465,7 +615,19 @@ func (cc *ClientConn) lbWatcher() { } cc.mu.Unlock() for _, a := range add { - cc.resetAddrConn(a, true, nil) + var err error + if doneChan != nil { + err = cc.resetAddrConn(a, true, nil) + if err == nil { + close(doneChan) + doneChan = nil + } + } else { + err = cc.resetAddrConn(a, false, nil) + } + if err != nil { + grpclog.Warningf("Error creating connection to %v. Err: %v", a, err) + } } for _, c := range del { c.tearDown(errConnDrain) @@ -494,14 +656,18 @@ func (cc *ClientConn) scWatcher() { // resetAddrConn creates an addrConn for addr and adds it to cc.conns. // If there is an old addrConn for addr, it will be torn down, using tearDownErr as the reason. // If tearDownErr is nil, errConnDrain will be used instead. -func (cc *ClientConn) resetAddrConn(addr Address, skipWait bool, tearDownErr error) error { +// +// We should never need to replace an addrConn with a new one. This function is only used +// as newAddrConn to create new addrConn. +// TODO rename this function and clean up the code. +func (cc *ClientConn) resetAddrConn(addr Address, block bool, tearDownErr error) error { ac := &addrConn{ cc: cc, addr: addr, dopts: cc.dopts, } ac.ctx, ac.cancel = context.WithCancel(cc.ctx) - ac.stateCV = sync.NewCond(&ac.mu) + ac.csEvltr = cc.csEvltr if EnableTracing { ac.events = trace.NewEventLog("grpc.ClientConn", ac.addr.Addr) } @@ -530,10 +696,7 @@ func (cc *ClientConn) resetAddrConn(addr Address, skipWait bool, tearDownErr err cc.mu.Unlock() if stale != nil { // There is an addrConn alive on ac.addr already. This could be due to - // 1) a buggy Balancer notifies duplicated Addresses; - // 2) goaway was received, a new ac will replace the old ac. - // The old ac should be deleted from cc.conns, but the - // underlying transport should drain rather than close. + // a buggy Balancer that reports duplicated Addresses. if tearDownErr == nil { // tearDownErr is nil if resetAddrConn is called by // 1) Dial @@ -544,8 +707,7 @@ func (cc *ClientConn) resetAddrConn(addr Address, skipWait bool, tearDownErr err stale.tearDown(tearDownErr) } } - // skipWait may overwrite the decision in ac.dopts.block. - if ac.dopts.block && !skipWait { + if block { if err := ac.resetTransport(false); err != nil { if err != errConnClosing { // Tear down ac and delete it from cc.conns. @@ -565,7 +727,7 @@ func (cc *ClientConn) resetAddrConn(addr Address, skipWait bool, tearDownErr err // Start a goroutine connecting to the server asynchronously. go func() { if err := ac.resetTransport(false); err != nil { - grpclog.Printf("Failed to dial %s: %v; please retry.", ac.addr.Addr, err) + grpclog.Warningf("Failed to dial %s: %v; please retry.", ac.addr.Addr, err) if err != errConnClosing { // Keep this ac in cc.conns, to get the reason it's torn down. ac.tearDown(err) @@ -578,12 +740,23 @@ func (cc *ClientConn) resetAddrConn(addr Address, skipWait bool, tearDownErr err return nil } -// TODO: Avoid the locking here. -func (cc *ClientConn) getMethodConfig(method string) (m MethodConfig, ok bool) { +// GetMethodConfig gets the method config of the input method. +// If there's an exact match for input method (i.e. /service/method), we return +// the corresponding MethodConfig. +// If there isn't an exact match for the input method, we look for the default config +// under the service (i.e /service/). If there is a default MethodConfig for +// the serivce, we return it. +// Otherwise, we return an empty MethodConfig. +func (cc *ClientConn) GetMethodConfig(method string) MethodConfig { + // TODO: Avoid the locking here. cc.mu.RLock() defer cc.mu.RUnlock() - m, ok = cc.sc.Methods[method] - return + m, ok := cc.sc.Methods[method] + if !ok { + i := strings.LastIndex(method, "/") + m, _ = cc.sc.Methods[method[:i+1]] + } + return m } func (cc *ClientConn) getTransport(ctx context.Context, opts BalancerGetOptions) (transport.ClientTransport, func(), error) { @@ -624,6 +797,7 @@ func (cc *ClientConn) getTransport(ctx context.Context, opts BalancerGetOptions) } if !ok { if put != nil { + updateRPCInfoInContext(ctx, rpcInfo{bytesSent: false, bytesReceived: false}) put() } return nil, nil, errConnClosing @@ -631,6 +805,7 @@ func (cc *ClientConn) getTransport(ctx context.Context, opts BalancerGetOptions) t, err := ac.wait(ctx, cc.dopts.balancer != nil, !opts.BlockingWait) if err != nil { if put != nil { + updateRPCInfoInContext(ctx, rpcInfo{bytesSent: false, bytesReceived: false}) put() } return nil, nil, err @@ -649,6 +824,7 @@ func (cc *ClientConn) Close() error { } conns := cc.conns cc.conns = nil + cc.csMgr.updateState(connectivity.Shutdown) cc.mu.Unlock() if cc.dopts.balancer != nil { cc.dopts.balancer.Close() @@ -669,10 +845,11 @@ type addrConn struct { dopts dialOptions events trace.EventLog - mu sync.Mutex - state ConnectivityState - stateCV *sync.Cond - down func(error) // the handler called when a connection is down. + csEvltr *connectivityStateEvaluator + + mu sync.Mutex + state connectivity.State + down func(error) // the handler called when a connection is down. // ready is closed and becomes nil when a new transport is up or failed // due to timeout. ready chan struct{} @@ -682,6 +859,20 @@ type addrConn struct { tearDownErr error } +// adjustParams updates parameters used to create transports upon +// receiving a GoAway. +func (ac *addrConn) adjustParams(r transport.GoAwayReason) { + switch r { + case transport.TooManyPings: + v := 2 * ac.dopts.copts.KeepaliveParams.Time + ac.cc.mu.Lock() + if v > ac.cc.mkp.Time { + ac.cc.mkp.Time = v + } + ac.cc.mu.Unlock() + } +} + // printf records an event in ac's event log, unless ac has been closed. // REQUIRES ac.mu is held. func (ac *addrConn) printf(format string, a ...interface{}) { @@ -698,62 +889,41 @@ func (ac *addrConn) errorf(format string, a ...interface{}) { } } -// getState returns the connectivity state of the Conn -func (ac *addrConn) getState() ConnectivityState { - ac.mu.Lock() - defer ac.mu.Unlock() - return ac.state -} - -// waitForStateChange blocks until the state changes to something other than the sourceState. -func (ac *addrConn) waitForStateChange(ctx context.Context, sourceState ConnectivityState) (ConnectivityState, error) { +// resetTransport recreates a transport to the address for ac. +// For the old transport: +// - if drain is true, it will be gracefully closed. +// - otherwise, it will be closed. +func (ac *addrConn) resetTransport(drain bool) error { ac.mu.Lock() - defer ac.mu.Unlock() - if sourceState != ac.state { - return ac.state, nil + if ac.state == connectivity.Shutdown { + ac.mu.Unlock() + return errConnClosing } - done := make(chan struct{}) - var err error - go func() { - select { - case <-ctx.Done(): - ac.mu.Lock() - err = ctx.Err() - ac.stateCV.Broadcast() - ac.mu.Unlock() - case <-done: - } - }() - defer close(done) - for sourceState == ac.state { - ac.stateCV.Wait() - if err != nil { - return ac.state, err - } + ac.printf("connecting") + if ac.down != nil { + ac.down(downErrorf(false, true, "%v", errNetworkIO)) + ac.down = nil } - return ac.state, nil -} - -func (ac *addrConn) resetTransport(closeTransport bool) error { + oldState := ac.state + ac.state = connectivity.Connecting + ac.csEvltr.recordTransition(oldState, ac.state) + t := ac.transport + ac.transport = nil + ac.mu.Unlock() + if t != nil && !drain { + t.Close() + } + ac.cc.mu.RLock() + ac.dopts.copts.KeepaliveParams = ac.cc.mkp + ac.cc.mu.RUnlock() for retries := 0; ; retries++ { ac.mu.Lock() - ac.printf("connecting") - if ac.state == Shutdown { + if ac.state == connectivity.Shutdown { // ac.tearDown(...) has been invoked. ac.mu.Unlock() return errConnClosing } - if ac.down != nil { - ac.down(downErrorf(false, true, "%v", errNetworkIO)) - ac.down = nil - } - ac.state = Connecting - ac.stateCV.Broadcast() - t := ac.transport ac.mu.Unlock() - if closeTransport && t != nil { - t.Close() - } sleepTime := ac.dopts.bs.backoff(retries) timeout := minConnectTimeout if timeout < sleepTime { @@ -766,45 +936,51 @@ func (ac *addrConn) resetTransport(closeTransport bool) error { Metadata: ac.addr.Metadata, } newTransport, err := transport.NewClientTransport(ctx, sinfo, ac.dopts.copts) + // Don't call cancel in success path due to a race in Go 1.6: + // https://github.com/golang/go/issues/15078. if err != nil { cancel() if e, ok := err.(transport.ConnectionError); ok && !e.Temporary() { return err } - grpclog.Printf("grpc: addrConn.resetTransport failed to create client transport: %v; Reconnecting to %v", err, ac.addr) + grpclog.Warningf("grpc: addrConn.resetTransport failed to create client transport: %v; Reconnecting to %v", err, ac.addr) ac.mu.Lock() - if ac.state == Shutdown { + if ac.state == connectivity.Shutdown { // ac.tearDown(...) has been invoked. ac.mu.Unlock() return errConnClosing } ac.errorf("transient failure: %v", err) - ac.state = TransientFailure - ac.stateCV.Broadcast() + oldState = ac.state + ac.state = connectivity.TransientFailure + ac.csEvltr.recordTransition(oldState, ac.state) if ac.ready != nil { close(ac.ready) ac.ready = nil } ac.mu.Unlock() - closeTransport = false + timer := time.NewTimer(sleepTime - time.Since(connectTime)) select { - case <-time.After(sleepTime - time.Since(connectTime)): + case <-timer.C: case <-ac.ctx.Done(): + timer.Stop() return ac.ctx.Err() } + timer.Stop() continue } ac.mu.Lock() ac.printf("ready") - if ac.state == Shutdown { + if ac.state == connectivity.Shutdown { // ac.tearDown(...) has been invoked. ac.mu.Unlock() newTransport.Close() return errConnClosing } - ac.state = Ready - ac.stateCV.Broadcast() + oldState = ac.state + ac.state = connectivity.Ready + ac.csEvltr.recordTransition(oldState, ac.state) ac.transport = newTransport if ac.ready != nil { close(ac.ready) @@ -836,43 +1012,59 @@ func (ac *addrConn) transportMonitor() { } return case <-t.GoAway(): - // If GoAway happens without any network I/O error, ac is closed without shutting down the - // underlying transport (the transport will be closed when all the pending RPCs finished or - // failed.). - // If GoAway and some network I/O error happen concurrently, ac and its underlying transport - // are closed. - // In both cases, a new ac is created. + ac.adjustParams(t.GetGoAwayReason()) + // If GoAway happens without any network I/O error, the underlying transport + // will be gracefully closed, and a new transport will be created. + // (The transport will be closed when all the pending RPCs finished or failed.) + // If GoAway and some network I/O error happen concurrently, the underlying transport + // will be closed, and a new transport will be created. + var drain bool select { case <-t.Error(): - ac.cc.resetAddrConn(ac.addr, true, errNetworkIO) default: - ac.cc.resetAddrConn(ac.addr, true, errConnDrain) + drain = true + } + if err := ac.resetTransport(drain); err != nil { + grpclog.Infof("get error from resetTransport %v, transportMonitor returning", err) + if err != errConnClosing { + // Keep this ac in cc.conns, to get the reason it's torn down. + ac.tearDown(err) + } + return } - return case <-t.Error(): select { case <-ac.ctx.Done(): t.Close() return case <-t.GoAway(): - ac.cc.resetAddrConn(ac.addr, true, errNetworkIO) - return + ac.adjustParams(t.GetGoAwayReason()) + if err := ac.resetTransport(false); err != nil { + grpclog.Infof("get error from resetTransport %v, transportMonitor returning", err) + if err != errConnClosing { + // Keep this ac in cc.conns, to get the reason it's torn down. + ac.tearDown(err) + } + return + } default: } ac.mu.Lock() - if ac.state == Shutdown { + if ac.state == connectivity.Shutdown { // ac has been shutdown. ac.mu.Unlock() return } - ac.state = TransientFailure - ac.stateCV.Broadcast() + oldState := ac.state + ac.state = connectivity.TransientFailure + ac.csEvltr.recordTransition(oldState, ac.state) ac.mu.Unlock() - if err := ac.resetTransport(true); err != nil { + if err := ac.resetTransport(false); err != nil { + grpclog.Infof("get error from resetTransport %v, transportMonitor returning", err) ac.mu.Lock() ac.printf("transport exiting: %v", err) ac.mu.Unlock() - grpclog.Printf("grpc: addrConn.transportMonitor exits due to: %v", err) + grpclog.Warningf("grpc: addrConn.transportMonitor exits due to: %v", err) if err != errConnClosing { // Keep this ac in cc.conns, to get the reason it's torn down. ac.tearDown(err) @@ -884,12 +1076,12 @@ func (ac *addrConn) transportMonitor() { } // wait blocks until i) the new transport is up or ii) ctx is done or iii) ac is closed or -// iv) transport is in TransientFailure and there is a balancer/failfast is true. +// iv) transport is in connectivity.TransientFailure and there is a balancer/failfast is true. func (ac *addrConn) wait(ctx context.Context, hasBalancer, failfast bool) (transport.ClientTransport, error) { for { ac.mu.Lock() switch { - case ac.state == Shutdown: + case ac.state == connectivity.Shutdown: if failfast || !hasBalancer { // RPC is failfast or balancer is nil. This RPC should fail with ac.tearDownErr. err := ac.tearDownErr @@ -898,11 +1090,11 @@ func (ac *addrConn) wait(ctx context.Context, hasBalancer, failfast bool) (trans } ac.mu.Unlock() return nil, errConnClosing - case ac.state == Ready: + case ac.state == connectivity.Ready: ct := ac.transport ac.mu.Unlock() return ct, nil - case ac.state == TransientFailure: + case ac.state == connectivity.TransientFailure: if failfast || hasBalancer { ac.mu.Unlock() return nil, errConnUnavailable @@ -944,12 +1136,13 @@ func (ac *addrConn) tearDown(err error) { // address removal and GoAway. ac.transport.GracefulClose() } - if ac.state == Shutdown { + if ac.state == connectivity.Shutdown { return } - ac.state = Shutdown + oldState := ac.state + ac.state = connectivity.Shutdown ac.tearDownErr = err - ac.stateCV.Broadcast() + ac.csEvltr.recordTransition(oldState, ac.state) if ac.events != nil { ac.events.Finish() ac.events = nil diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/codec.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/codec.go new file mode 100644 index 00000000..905b048e --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/codec.go @@ -0,0 +1,104 @@ +/* + * + * Copyright 2014 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpc + +import ( + "math" + "sync" + + "github.com/golang/protobuf/proto" +) + +// Codec defines the interface gRPC uses to encode and decode messages. +// Note that implementations of this interface must be thread safe; +// a Codec's methods can be called from concurrent goroutines. +type Codec interface { + // Marshal returns the wire format of v. + Marshal(v interface{}) ([]byte, error) + // Unmarshal parses the wire format into v. + Unmarshal(data []byte, v interface{}) error + // String returns the name of the Codec implementation. The returned + // string will be used as part of content type in transmission. + String() string +} + +// protoCodec is a Codec implementation with protobuf. It is the default codec for gRPC. +type protoCodec struct { +} + +type cachedProtoBuffer struct { + lastMarshaledSize uint32 + proto.Buffer +} + +func capToMaxInt32(val int) uint32 { + if val > math.MaxInt32 { + return uint32(math.MaxInt32) + } + return uint32(val) +} + +func (p protoCodec) marshal(v interface{}, cb *cachedProtoBuffer) ([]byte, error) { + protoMsg := v.(proto.Message) + newSlice := make([]byte, 0, cb.lastMarshaledSize) + + cb.SetBuf(newSlice) + cb.Reset() + if err := cb.Marshal(protoMsg); err != nil { + return nil, err + } + out := cb.Bytes() + cb.lastMarshaledSize = capToMaxInt32(len(out)) + return out, nil +} + +func (p protoCodec) Marshal(v interface{}) ([]byte, error) { + cb := protoBufferPool.Get().(*cachedProtoBuffer) + out, err := p.marshal(v, cb) + + // put back buffer and lose the ref to the slice + cb.SetBuf(nil) + protoBufferPool.Put(cb) + return out, err +} + +func (p protoCodec) Unmarshal(data []byte, v interface{}) error { + cb := protoBufferPool.Get().(*cachedProtoBuffer) + cb.SetBuf(data) + v.(proto.Message).Reset() + err := cb.Unmarshal(v.(proto.Message)) + cb.SetBuf(nil) + protoBufferPool.Put(cb) + return err +} + +func (protoCodec) String() string { + return "proto" +} + +var ( + protoBufferPool = &sync.Pool{ + New: func() interface{} { + return &cachedProtoBuffer{ + Buffer: proto.Buffer{}, + lastMarshaledSize: 16, + } + }, + } +) diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/codes/codes.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/codes/codes.go index e14b464a..21e7733a 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/codes/codes.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/codes/codes.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -44,7 +29,7 @@ const ( // OK is returned on success. OK Code = 0 - // Canceled indicates the operation was cancelled (typically by the caller). + // Canceled indicates the operation was canceled (typically by the caller). Canceled Code = 1 // Unknown error. An example of where this error may be returned is diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/connectivity/connectivity.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/connectivity/connectivity.go new file mode 100644 index 00000000..568ef5dc --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/connectivity/connectivity.go @@ -0,0 +1,72 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// Package connectivity defines connectivity semantics. +// For details, see https://github.com/grpc/grpc/blob/master/doc/connectivity-semantics-and-api.md. +// All APIs in this package are experimental. +package connectivity + +import ( + "golang.org/x/net/context" + "google.golang.org/grpc/grpclog" +) + +// State indicates the state of connectivity. +// It can be the state of a ClientConn or SubConn. +type State int + +func (s State) String() string { + switch s { + case Idle: + return "IDLE" + case Connecting: + return "CONNECTING" + case Ready: + return "READY" + case TransientFailure: + return "TRANSIENT_FAILURE" + case Shutdown: + return "SHUTDOWN" + default: + grpclog.Errorf("unknown connectivity state: %d", s) + return "Invalid-State" + } +} + +const ( + // Idle indicates the ClientConn is idle. + Idle State = iota + // Connecting indicates the ClienConn is connecting. + Connecting + // Ready indicates the ClientConn is ready for work. + Ready + // TransientFailure indicates the ClientConn has seen a failure but expects to recover. + TransientFailure + // Shutdown indicates the ClientConn has started shutting down. + Shutdown +) + +// Reporter reports the connectivity states. +type Reporter interface { + // CurrentState returns the current state of the reporter. + CurrentState() State + // WaitForStateChange blocks until the reporter's state is different from the given state, + // and returns true. + // It returns false if <-ctx.Done() can proceed (ctx got timeout or got canceled). + WaitForStateChange(context.Context, State) bool +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials.go index 4d45c3e3..2475fe83 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -102,6 +87,10 @@ type TransportCredentials interface { // authentication protocol on rawConn for clients. It returns the authenticated // connection and the corresponding auth information about the connection. // Implementations must use the provided context to implement timely cancellation. + // gRPC will try to reconnect if the error returned is a temporary error + // (io.EOF, context.DeadlineExceeded or err.Temporary() == true). + // If the returned error is a wrapper error, implementations should make sure that + // the error implements Temporary() to have the correct retry behaviors. ClientHandshake(context.Context, string, net.Conn) (net.Conn, AuthInfo, error) // ServerHandshake does the authentication handshake for servers. It returns // the authenticated connection and the corresponding auth information about @@ -192,14 +181,14 @@ func NewTLS(c *tls.Config) TransportCredentials { return tc } -// NewClientTLSFromCert constructs a TLS from the input certificate for client. +// NewClientTLSFromCert constructs TLS credentials from the input certificate for client. // serverNameOverride is for testing only. If set to a non empty string, // it will override the virtual host name of authority (e.g. :authority header field) in requests. func NewClientTLSFromCert(cp *x509.CertPool, serverNameOverride string) TransportCredentials { return NewTLS(&tls.Config{ServerName: serverNameOverride, RootCAs: cp}) } -// NewClientTLSFromFile constructs a TLS from the input certificate file for client. +// NewClientTLSFromFile constructs TLS credentials from the input certificate file for client. // serverNameOverride is for testing only. If set to a non empty string, // it will override the virtual host name of authority (e.g. :authority header field) in requests. func NewClientTLSFromFile(certFile, serverNameOverride string) (TransportCredentials, error) { @@ -214,12 +203,12 @@ func NewClientTLSFromFile(certFile, serverNameOverride string) (TransportCredent return NewTLS(&tls.Config{ServerName: serverNameOverride, RootCAs: cp}), nil } -// NewServerTLSFromCert constructs a TLS from the input certificate for server. +// NewServerTLSFromCert constructs TLS credentials from the input certificate for server. func NewServerTLSFromCert(cert *tls.Certificate) TransportCredentials { return NewTLS(&tls.Config{Certificates: []tls.Certificate{*cert}}) } -// NewServerTLSFromFile constructs a TLS from the input certificate file and key +// NewServerTLSFromFile constructs TLS credentials from the input certificate file and key // file for server. func NewServerTLSFromFile(certFile, keyFile string) (TransportCredentials, error) { cert, err := tls.LoadX509KeyPair(certFile, keyFile) diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_go17.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_go17.go index 9647b9ec..60409aac 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_go17.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_go17.go @@ -1,35 +1,21 @@ // +build go1.7 +// +build !go1.8 /* * - * Copyright 2016, Google Inc. - * All rights reserved. + * Copyright 2016 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -44,8 +30,6 @@ import ( // contains a mutex and must not be copied. // // If cfg is nil, a new zero tls.Config is returned. -// -// TODO replace this function with official clone function. func cloneTLSConfig(cfg *tls.Config) *tls.Config { if cfg == nil { return &tls.Config{} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_go18.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_go18.go new file mode 100644 index 00000000..93f0e1d8 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_go18.go @@ -0,0 +1,38 @@ +// +build go1.8 + +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package credentials + +import ( + "crypto/tls" +) + +// cloneTLSConfig returns a shallow clone of the exported +// fields of cfg, ignoring the unexported sync.Once, which +// contains a mutex and must not be copied. +// +// If cfg is nil, a new zero tls.Config is returned. +func cloneTLSConfig(cfg *tls.Config) *tls.Config { + if cfg == nil { + return &tls.Config{} + } + + return cfg.Clone() +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go index 09b8d12c..d6bbcc9f 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/credentials/credentials_util_pre_go17.go @@ -2,34 +2,19 @@ /* * - * Copyright 2016, Google Inc. - * All rights reserved. + * Copyright 2016 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -44,8 +29,6 @@ import ( // contains a mutex and must not be copied. // // If cfg is nil, a new zero tls.Config is returned. -// -// TODO replace this function with official clone function. func cloneTLSConfig(cfg *tls.Config) *tls.Config { if cfg == nil { return &tls.Config{} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/doc.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/doc.go index a35f2188..187adbb1 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/doc.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/doc.go @@ -1,6 +1,24 @@ /* + * + * Copyright 2015 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +/* Package grpc implements an RPC system called gRPC. -See www.grpc.io for more information about gRPC. +See grpc.io for more information about gRPC. */ package grpc // import "google.golang.org/grpc" diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/go16.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/go16.go new file mode 100644 index 00000000..f3dbf217 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/go16.go @@ -0,0 +1,98 @@ +// +build go1.6,!go1.7 + +/* + * + * Copyright 2016 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpc + +import ( + "fmt" + "io" + "net" + "net/http" + "os" + + "golang.org/x/net/context" + "google.golang.org/grpc/codes" + "google.golang.org/grpc/status" + "google.golang.org/grpc/transport" +) + +// dialContext connects to the address on the named network. +func dialContext(ctx context.Context, network, address string) (net.Conn, error) { + return (&net.Dialer{Cancel: ctx.Done()}).Dial(network, address) +} + +func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error { + req.Cancel = ctx.Done() + if err := req.Write(conn); err != nil { + return fmt.Errorf("failed to write the HTTP request: %v", err) + } + return nil +} + +// toRPCErr converts an error into an error from the status package. +func toRPCErr(err error) error { + if _, ok := status.FromError(err); ok { + return err + } + switch e := err.(type) { + case transport.StreamError: + return status.Error(e.Code, e.Desc) + case transport.ConnectionError: + return status.Error(codes.Unavailable, e.Desc) + default: + switch err { + case context.DeadlineExceeded: + return status.Error(codes.DeadlineExceeded, err.Error()) + case context.Canceled: + return status.Error(codes.Canceled, err.Error()) + case ErrClientConnClosing: + return status.Error(codes.FailedPrecondition, err.Error()) + } + } + return status.Error(codes.Unknown, err.Error()) +} + +// convertCode converts a standard Go error into its canonical code. Note that +// this is only used to translate the error returned by the server applications. +func convertCode(err error) codes.Code { + switch err { + case nil: + return codes.OK + case io.EOF: + return codes.OutOfRange + case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF: + return codes.FailedPrecondition + case os.ErrInvalid: + return codes.InvalidArgument + case context.Canceled: + return codes.Canceled + case context.DeadlineExceeded: + return codes.DeadlineExceeded + } + switch { + case os.IsExist(err): + return codes.AlreadyExists + case os.IsNotExist(err): + return codes.NotFound + case os.IsPermission(err): + return codes.PermissionDenied + } + return codes.Unknown +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/go17.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/go17.go new file mode 100644 index 00000000..a3421d99 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/go17.go @@ -0,0 +1,98 @@ +// +build go1.7 + +/* + * + * Copyright 2016 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpc + +import ( + "context" + "io" + "net" + "net/http" + "os" + + netctx "golang.org/x/net/context" + "google.golang.org/grpc/codes" + "google.golang.org/grpc/status" + "google.golang.org/grpc/transport" +) + +// dialContext connects to the address on the named network. +func dialContext(ctx context.Context, network, address string) (net.Conn, error) { + return (&net.Dialer{}).DialContext(ctx, network, address) +} + +func sendHTTPRequest(ctx context.Context, req *http.Request, conn net.Conn) error { + req = req.WithContext(ctx) + if err := req.Write(conn); err != nil { + return err + } + return nil +} + +// toRPCErr converts an error into an error from the status package. +func toRPCErr(err error) error { + if _, ok := status.FromError(err); ok { + return err + } + switch e := err.(type) { + case transport.StreamError: + return status.Error(e.Code, e.Desc) + case transport.ConnectionError: + return status.Error(codes.Unavailable, e.Desc) + default: + switch err { + case context.DeadlineExceeded, netctx.DeadlineExceeded: + return status.Error(codes.DeadlineExceeded, err.Error()) + case context.Canceled, netctx.Canceled: + return status.Error(codes.Canceled, err.Error()) + case ErrClientConnClosing: + return status.Error(codes.FailedPrecondition, err.Error()) + } + } + return status.Error(codes.Unknown, err.Error()) +} + +// convertCode converts a standard Go error into its canonical code. Note that +// this is only used to translate the error returned by the server applications. +func convertCode(err error) codes.Code { + switch err { + case nil: + return codes.OK + case io.EOF: + return codes.OutOfRange + case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF: + return codes.FailedPrecondition + case os.ErrInvalid: + return codes.InvalidArgument + case context.Canceled, netctx.Canceled: + return codes.Canceled + case context.DeadlineExceeded, netctx.DeadlineExceeded: + return codes.DeadlineExceeded + } + switch { + case os.IsExist(err): + return codes.AlreadyExists + case os.IsNotExist(err): + return codes.NotFound + case os.IsPermission(err): + return codes.PermissionDenied + } + return codes.Unknown +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclb.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclb.go new file mode 100644 index 00000000..f7b6b7da --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclb.go @@ -0,0 +1,737 @@ +/* + * + * Copyright 2016 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpc + +import ( + "errors" + "fmt" + "math/rand" + "net" + "sync" + "time" + + "golang.org/x/net/context" + "google.golang.org/grpc/codes" + lbpb "google.golang.org/grpc/grpclb/grpc_lb_v1" + "google.golang.org/grpc/grpclog" + "google.golang.org/grpc/metadata" + "google.golang.org/grpc/naming" +) + +// Client API for LoadBalancer service. +// Mostly copied from generated pb.go file. +// To avoid circular dependency. +type loadBalancerClient struct { + cc *ClientConn +} + +func (c *loadBalancerClient) BalanceLoad(ctx context.Context, opts ...CallOption) (*balanceLoadClientStream, error) { + desc := &StreamDesc{ + StreamName: "BalanceLoad", + ServerStreams: true, + ClientStreams: true, + } + stream, err := NewClientStream(ctx, desc, c.cc, "/grpc.lb.v1.LoadBalancer/BalanceLoad", opts...) + if err != nil { + return nil, err + } + x := &balanceLoadClientStream{stream} + return x, nil +} + +type balanceLoadClientStream struct { + ClientStream +} + +func (x *balanceLoadClientStream) Send(m *lbpb.LoadBalanceRequest) error { + return x.ClientStream.SendMsg(m) +} + +func (x *balanceLoadClientStream) Recv() (*lbpb.LoadBalanceResponse, error) { + m := new(lbpb.LoadBalanceResponse) + if err := x.ClientStream.RecvMsg(m); err != nil { + return nil, err + } + return m, nil +} + +// NewGRPCLBBalancer creates a grpclb load balancer. +func NewGRPCLBBalancer(r naming.Resolver) Balancer { + return &balancer{ + r: r, + } +} + +type remoteBalancerInfo struct { + addr string + // the server name used for authentication with the remote LB server. + name string +} + +// grpclbAddrInfo consists of the information of a backend server. +type grpclbAddrInfo struct { + addr Address + connected bool + // dropForRateLimiting indicates whether this particular request should be + // dropped by the client for rate limiting. + dropForRateLimiting bool + // dropForLoadBalancing indicates whether this particular request should be + // dropped by the client for load balancing. + dropForLoadBalancing bool +} + +type balancer struct { + r naming.Resolver + target string + mu sync.Mutex + seq int // a sequence number to make sure addrCh does not get stale addresses. + w naming.Watcher + addrCh chan []Address + rbs []remoteBalancerInfo + addrs []*grpclbAddrInfo + next int + waitCh chan struct{} + done bool + expTimer *time.Timer + rand *rand.Rand + + clientStats lbpb.ClientStats +} + +func (b *balancer) watchAddrUpdates(w naming.Watcher, ch chan []remoteBalancerInfo) error { + updates, err := w.Next() + if err != nil { + grpclog.Warningf("grpclb: failed to get next addr update from watcher: %v", err) + return err + } + b.mu.Lock() + defer b.mu.Unlock() + if b.done { + return ErrClientConnClosing + } + for _, update := range updates { + switch update.Op { + case naming.Add: + var exist bool + for _, v := range b.rbs { + // TODO: Is the same addr with different server name a different balancer? + if update.Addr == v.addr { + exist = true + break + } + } + if exist { + continue + } + md, ok := update.Metadata.(*naming.AddrMetadataGRPCLB) + if !ok { + // TODO: Revisit the handling here and may introduce some fallback mechanism. + grpclog.Errorf("The name resolution contains unexpected metadata %v", update.Metadata) + continue + } + switch md.AddrType { + case naming.Backend: + // TODO: Revisit the handling here and may introduce some fallback mechanism. + grpclog.Errorf("The name resolution does not give grpclb addresses") + continue + case naming.GRPCLB: + b.rbs = append(b.rbs, remoteBalancerInfo{ + addr: update.Addr, + name: md.ServerName, + }) + default: + grpclog.Errorf("Received unknow address type %d", md.AddrType) + continue + } + case naming.Delete: + for i, v := range b.rbs { + if update.Addr == v.addr { + copy(b.rbs[i:], b.rbs[i+1:]) + b.rbs = b.rbs[:len(b.rbs)-1] + break + } + } + default: + grpclog.Errorf("Unknown update.Op %v", update.Op) + } + } + // TODO: Fall back to the basic round-robin load balancing if the resulting address is + // not a load balancer. + select { + case <-ch: + default: + } + ch <- b.rbs + return nil +} + +func (b *balancer) serverListExpire(seq int) { + b.mu.Lock() + defer b.mu.Unlock() + // TODO: gRPC interanls do not clear the connections when the server list is stale. + // This means RPCs will keep using the existing server list until b receives new + // server list even though the list is expired. Revisit this behavior later. + if b.done || seq < b.seq { + return + } + b.next = 0 + b.addrs = nil + // Ask grpc internals to close all the corresponding connections. + b.addrCh <- nil +} + +func convertDuration(d *lbpb.Duration) time.Duration { + if d == nil { + return 0 + } + return time.Duration(d.Seconds)*time.Second + time.Duration(d.Nanos)*time.Nanosecond +} + +func (b *balancer) processServerList(l *lbpb.ServerList, seq int) { + if l == nil { + return + } + servers := l.GetServers() + expiration := convertDuration(l.GetExpirationInterval()) + var ( + sl []*grpclbAddrInfo + addrs []Address + ) + for _, s := range servers { + md := metadata.Pairs("lb-token", s.LoadBalanceToken) + ip := net.IP(s.IpAddress) + ipStr := ip.String() + if ip.To4() == nil { + // Add square brackets to ipv6 addresses, otherwise net.Dial() and + // net.SplitHostPort() will return too many colons error. + ipStr = fmt.Sprintf("[%s]", ipStr) + } + addr := Address{ + Addr: fmt.Sprintf("%s:%d", ipStr, s.Port), + Metadata: &md, + } + sl = append(sl, &grpclbAddrInfo{ + addr: addr, + dropForRateLimiting: s.DropForRateLimiting, + dropForLoadBalancing: s.DropForLoadBalancing, + }) + addrs = append(addrs, addr) + } + b.mu.Lock() + defer b.mu.Unlock() + if b.done || seq < b.seq { + return + } + if len(sl) > 0 { + // reset b.next to 0 when replacing the server list. + b.next = 0 + b.addrs = sl + b.addrCh <- addrs + if b.expTimer != nil { + b.expTimer.Stop() + b.expTimer = nil + } + if expiration > 0 { + b.expTimer = time.AfterFunc(expiration, func() { + b.serverListExpire(seq) + }) + } + } + return +} + +func (b *balancer) sendLoadReport(s *balanceLoadClientStream, interval time.Duration, done <-chan struct{}) { + ticker := time.NewTicker(interval) + defer ticker.Stop() + for { + select { + case <-ticker.C: + case <-done: + return + } + b.mu.Lock() + stats := b.clientStats + b.clientStats = lbpb.ClientStats{} // Clear the stats. + b.mu.Unlock() + t := time.Now() + stats.Timestamp = &lbpb.Timestamp{ + Seconds: t.Unix(), + Nanos: int32(t.Nanosecond()), + } + if err := s.Send(&lbpb.LoadBalanceRequest{ + LoadBalanceRequestType: &lbpb.LoadBalanceRequest_ClientStats{ + ClientStats: &stats, + }, + }); err != nil { + grpclog.Errorf("grpclb: failed to send load report: %v", err) + return + } + } +} + +func (b *balancer) callRemoteBalancer(lbc *loadBalancerClient, seq int) (retry bool) { + ctx, cancel := context.WithCancel(context.Background()) + defer cancel() + stream, err := lbc.BalanceLoad(ctx) + if err != nil { + grpclog.Errorf("grpclb: failed to perform RPC to the remote balancer %v", err) + return + } + b.mu.Lock() + if b.done { + b.mu.Unlock() + return + } + b.mu.Unlock() + initReq := &lbpb.LoadBalanceRequest{ + LoadBalanceRequestType: &lbpb.LoadBalanceRequest_InitialRequest{ + InitialRequest: &lbpb.InitialLoadBalanceRequest{ + Name: b.target, + }, + }, + } + if err := stream.Send(initReq); err != nil { + grpclog.Errorf("grpclb: failed to send init request: %v", err) + // TODO: backoff on retry? + return true + } + reply, err := stream.Recv() + if err != nil { + grpclog.Errorf("grpclb: failed to recv init response: %v", err) + // TODO: backoff on retry? + return true + } + initResp := reply.GetInitialResponse() + if initResp == nil { + grpclog.Errorf("grpclb: reply from remote balancer did not include initial response.") + return + } + // TODO: Support delegation. + if initResp.LoadBalancerDelegate != "" { + // delegation + grpclog.Errorf("TODO: Delegation is not supported yet.") + return + } + streamDone := make(chan struct{}) + defer close(streamDone) + b.mu.Lock() + b.clientStats = lbpb.ClientStats{} // Clear client stats. + b.mu.Unlock() + if d := convertDuration(initResp.ClientStatsReportInterval); d > 0 { + go b.sendLoadReport(stream, d, streamDone) + } + // Retrieve the server list. + for { + reply, err := stream.Recv() + if err != nil { + grpclog.Errorf("grpclb: failed to recv server list: %v", err) + break + } + b.mu.Lock() + if b.done || seq < b.seq { + b.mu.Unlock() + return + } + b.seq++ // tick when receiving a new list of servers. + seq = b.seq + b.mu.Unlock() + if serverList := reply.GetServerList(); serverList != nil { + b.processServerList(serverList, seq) + } + } + return true +} + +func (b *balancer) Start(target string, config BalancerConfig) error { + b.rand = rand.New(rand.NewSource(time.Now().Unix())) + // TODO: Fall back to the basic direct connection if there is no name resolver. + if b.r == nil { + return errors.New("there is no name resolver installed") + } + b.target = target + b.mu.Lock() + if b.done { + b.mu.Unlock() + return ErrClientConnClosing + } + b.addrCh = make(chan []Address) + w, err := b.r.Resolve(target) + if err != nil { + b.mu.Unlock() + grpclog.Errorf("grpclb: failed to resolve address: %v, err: %v", target, err) + return err + } + b.w = w + b.mu.Unlock() + balancerAddrsCh := make(chan []remoteBalancerInfo, 1) + // Spawn a goroutine to monitor the name resolution of remote load balancer. + go func() { + for { + if err := b.watchAddrUpdates(w, balancerAddrsCh); err != nil { + grpclog.Warningf("grpclb: the naming watcher stops working due to %v.\n", err) + close(balancerAddrsCh) + return + } + } + }() + // Spawn a goroutine to talk to the remote load balancer. + go func() { + var ( + cc *ClientConn + // ccError is closed when there is an error in the current cc. + // A new rb should be picked from rbs and connected. + ccError chan struct{} + rb *remoteBalancerInfo + rbs []remoteBalancerInfo + rbIdx int + ) + + defer func() { + if ccError != nil { + select { + case <-ccError: + default: + close(ccError) + } + } + if cc != nil { + cc.Close() + } + }() + + for { + var ok bool + select { + case rbs, ok = <-balancerAddrsCh: + if !ok { + return + } + foundIdx := -1 + if rb != nil { + for i, trb := range rbs { + if trb == *rb { + foundIdx = i + break + } + } + } + if foundIdx >= 0 { + if foundIdx >= 1 { + // Move the address in use to the beginning of the list. + b.rbs[0], b.rbs[foundIdx] = b.rbs[foundIdx], b.rbs[0] + rbIdx = 0 + } + continue // If found, don't dial new cc. + } else if len(rbs) > 0 { + // Pick a random one from the list, instead of always using the first one. + if l := len(rbs); l > 1 && rb != nil { + tmpIdx := b.rand.Intn(l - 1) + b.rbs[0], b.rbs[tmpIdx] = b.rbs[tmpIdx], b.rbs[0] + } + rbIdx = 0 + rb = &rbs[0] + } else { + // foundIdx < 0 && len(rbs) <= 0. + rb = nil + } + case <-ccError: + ccError = nil + if rbIdx < len(rbs)-1 { + rbIdx++ + rb = &rbs[rbIdx] + } else { + rb = nil + } + } + + if rb == nil { + continue + } + + if cc != nil { + cc.Close() + } + // Talk to the remote load balancer to get the server list. + var ( + err error + dopts []DialOption + ) + if creds := config.DialCreds; creds != nil { + if rb.name != "" { + if err := creds.OverrideServerName(rb.name); err != nil { + grpclog.Warningf("grpclb: failed to override the server name in the credentials: %v", err) + continue + } + } + dopts = append(dopts, WithTransportCredentials(creds)) + } else { + dopts = append(dopts, WithInsecure()) + } + if dialer := config.Dialer; dialer != nil { + // WithDialer takes a different type of function, so we instead use a special DialOption here. + dopts = append(dopts, func(o *dialOptions) { o.copts.Dialer = dialer }) + } + ccError = make(chan struct{}) + cc, err = Dial(rb.addr, dopts...) + if err != nil { + grpclog.Warningf("grpclb: failed to setup a connection to the remote balancer %v: %v", rb.addr, err) + close(ccError) + continue + } + b.mu.Lock() + b.seq++ // tick when getting a new balancer address + seq := b.seq + b.next = 0 + b.mu.Unlock() + go func(cc *ClientConn, ccError chan struct{}) { + lbc := &loadBalancerClient{cc} + b.callRemoteBalancer(lbc, seq) + cc.Close() + select { + case <-ccError: + default: + close(ccError) + } + }(cc, ccError) + } + }() + return nil +} + +func (b *balancer) down(addr Address, err error) { + b.mu.Lock() + defer b.mu.Unlock() + for _, a := range b.addrs { + if addr == a.addr { + a.connected = false + break + } + } +} + +func (b *balancer) Up(addr Address) func(error) { + b.mu.Lock() + defer b.mu.Unlock() + if b.done { + return nil + } + var cnt int + for _, a := range b.addrs { + if a.addr == addr { + if a.connected { + return nil + } + a.connected = true + } + if a.connected && !a.dropForRateLimiting && !a.dropForLoadBalancing { + cnt++ + } + } + // addr is the only one which is connected. Notify the Get() callers who are blocking. + if cnt == 1 && b.waitCh != nil { + close(b.waitCh) + b.waitCh = nil + } + return func(err error) { + b.down(addr, err) + } +} + +func (b *balancer) Get(ctx context.Context, opts BalancerGetOptions) (addr Address, put func(), err error) { + var ch chan struct{} + b.mu.Lock() + if b.done { + b.mu.Unlock() + err = ErrClientConnClosing + return + } + seq := b.seq + + defer func() { + if err != nil { + return + } + put = func() { + s, ok := rpcInfoFromContext(ctx) + if !ok { + return + } + b.mu.Lock() + defer b.mu.Unlock() + if b.done || seq < b.seq { + return + } + b.clientStats.NumCallsFinished++ + if !s.bytesSent { + b.clientStats.NumCallsFinishedWithClientFailedToSend++ + } else if s.bytesReceived { + b.clientStats.NumCallsFinishedKnownReceived++ + } + } + }() + + b.clientStats.NumCallsStarted++ + if len(b.addrs) > 0 { + if b.next >= len(b.addrs) { + b.next = 0 + } + next := b.next + for { + a := b.addrs[next] + next = (next + 1) % len(b.addrs) + if a.connected { + if !a.dropForRateLimiting && !a.dropForLoadBalancing { + addr = a.addr + b.next = next + b.mu.Unlock() + return + } + if !opts.BlockingWait { + b.next = next + if a.dropForLoadBalancing { + b.clientStats.NumCallsFinished++ + b.clientStats.NumCallsFinishedWithDropForLoadBalancing++ + } else if a.dropForRateLimiting { + b.clientStats.NumCallsFinished++ + b.clientStats.NumCallsFinishedWithDropForRateLimiting++ + } + b.mu.Unlock() + err = Errorf(codes.Unavailable, "%s drops requests", a.addr.Addr) + return + } + } + if next == b.next { + // Has iterated all the possible address but none is connected. + break + } + } + } + if !opts.BlockingWait { + if len(b.addrs) == 0 { + b.clientStats.NumCallsFinished++ + b.clientStats.NumCallsFinishedWithClientFailedToSend++ + b.mu.Unlock() + err = Errorf(codes.Unavailable, "there is no address available") + return + } + // Returns the next addr on b.addrs for a failfast RPC. + addr = b.addrs[b.next].addr + b.next++ + b.mu.Unlock() + return + } + // Wait on b.waitCh for non-failfast RPCs. + if b.waitCh == nil { + ch = make(chan struct{}) + b.waitCh = ch + } else { + ch = b.waitCh + } + b.mu.Unlock() + for { + select { + case <-ctx.Done(): + b.mu.Lock() + b.clientStats.NumCallsFinished++ + b.clientStats.NumCallsFinishedWithClientFailedToSend++ + b.mu.Unlock() + err = ctx.Err() + return + case <-ch: + b.mu.Lock() + if b.done { + b.clientStats.NumCallsFinished++ + b.clientStats.NumCallsFinishedWithClientFailedToSend++ + b.mu.Unlock() + err = ErrClientConnClosing + return + } + + if len(b.addrs) > 0 { + if b.next >= len(b.addrs) { + b.next = 0 + } + next := b.next + for { + a := b.addrs[next] + next = (next + 1) % len(b.addrs) + if a.connected { + if !a.dropForRateLimiting && !a.dropForLoadBalancing { + addr = a.addr + b.next = next + b.mu.Unlock() + return + } + if !opts.BlockingWait { + b.next = next + if a.dropForLoadBalancing { + b.clientStats.NumCallsFinished++ + b.clientStats.NumCallsFinishedWithDropForLoadBalancing++ + } else if a.dropForRateLimiting { + b.clientStats.NumCallsFinished++ + b.clientStats.NumCallsFinishedWithDropForRateLimiting++ + } + b.mu.Unlock() + err = Errorf(codes.Unavailable, "drop requests for the addreess %s", a.addr.Addr) + return + } + } + if next == b.next { + // Has iterated all the possible address but none is connected. + break + } + } + } + // The newly added addr got removed by Down() again. + if b.waitCh == nil { + ch = make(chan struct{}) + b.waitCh = ch + } else { + ch = b.waitCh + } + b.mu.Unlock() + } + } +} + +func (b *balancer) Notify() <-chan []Address { + return b.addrCh +} + +func (b *balancer) Close() error { + b.mu.Lock() + defer b.mu.Unlock() + if b.done { + return errBalancerClosed + } + b.done = true + if b.expTimer != nil { + b.expTimer.Stop() + } + if b.waitCh != nil { + close(b.waitCh) + } + if b.addrCh != nil { + close(b.addrCh) + } + if b.w != nil { + b.w.Close() + } + return nil +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/grpclb.pb.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/grpclb.pb.go new file mode 100644 index 00000000..f63941bd --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/grpclb.pb.go @@ -0,0 +1,629 @@ +// Code generated by protoc-gen-go. +// source: grpclb.proto +// DO NOT EDIT! + +/* +Package grpc_lb_v1 is a generated protocol buffer package. + +It is generated from these files: + grpclb.proto + +It has these top-level messages: + Duration + Timestamp + LoadBalanceRequest + InitialLoadBalanceRequest + ClientStats + LoadBalanceResponse + InitialLoadBalanceResponse + ServerList + Server +*/ +package grpc_lb_v1 + +import proto "github.com/golang/protobuf/proto" +import fmt "fmt" +import math "math" + +// Reference imports to suppress errors if they are not otherwise used. +var _ = proto.Marshal +var _ = fmt.Errorf +var _ = math.Inf + +// This is a compile-time assertion to ensure that this generated file +// is compatible with the proto package it is being compiled against. +// A compilation error at this line likely means your copy of the +// proto package needs to be updated. +const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package + +type Duration struct { + // Signed seconds of the span of time. Must be from -315,576,000,000 + // to +315,576,000,000 inclusive. + Seconds int64 `protobuf:"varint,1,opt,name=seconds" json:"seconds,omitempty"` + // Signed fractions of a second at nanosecond resolution of the span + // of time. Durations less than one second are represented with a 0 + // `seconds` field and a positive or negative `nanos` field. For durations + // of one second or more, a non-zero value for the `nanos` field must be + // of the same sign as the `seconds` field. Must be from -999,999,999 + // to +999,999,999 inclusive. + Nanos int32 `protobuf:"varint,2,opt,name=nanos" json:"nanos,omitempty"` +} + +func (m *Duration) Reset() { *m = Duration{} } +func (m *Duration) String() string { return proto.CompactTextString(m) } +func (*Duration) ProtoMessage() {} +func (*Duration) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} } + +func (m *Duration) GetSeconds() int64 { + if m != nil { + return m.Seconds + } + return 0 +} + +func (m *Duration) GetNanos() int32 { + if m != nil { + return m.Nanos + } + return 0 +} + +type Timestamp struct { + // Represents seconds of UTC time since Unix epoch + // 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to + // 9999-12-31T23:59:59Z inclusive. + Seconds int64 `protobuf:"varint,1,opt,name=seconds" json:"seconds,omitempty"` + // Non-negative fractions of a second at nanosecond resolution. Negative + // second values with fractions must still have non-negative nanos values + // that count forward in time. Must be from 0 to 999,999,999 + // inclusive. + Nanos int32 `protobuf:"varint,2,opt,name=nanos" json:"nanos,omitempty"` +} + +func (m *Timestamp) Reset() { *m = Timestamp{} } +func (m *Timestamp) String() string { return proto.CompactTextString(m) } +func (*Timestamp) ProtoMessage() {} +func (*Timestamp) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} } + +func (m *Timestamp) GetSeconds() int64 { + if m != nil { + return m.Seconds + } + return 0 +} + +func (m *Timestamp) GetNanos() int32 { + if m != nil { + return m.Nanos + } + return 0 +} + +type LoadBalanceRequest struct { + // Types that are valid to be assigned to LoadBalanceRequestType: + // *LoadBalanceRequest_InitialRequest + // *LoadBalanceRequest_ClientStats + LoadBalanceRequestType isLoadBalanceRequest_LoadBalanceRequestType `protobuf_oneof:"load_balance_request_type"` +} + +func (m *LoadBalanceRequest) Reset() { *m = LoadBalanceRequest{} } +func (m *LoadBalanceRequest) String() string { return proto.CompactTextString(m) } +func (*LoadBalanceRequest) ProtoMessage() {} +func (*LoadBalanceRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{2} } + +type isLoadBalanceRequest_LoadBalanceRequestType interface { + isLoadBalanceRequest_LoadBalanceRequestType() +} + +type LoadBalanceRequest_InitialRequest struct { + InitialRequest *InitialLoadBalanceRequest `protobuf:"bytes,1,opt,name=initial_request,json=initialRequest,oneof"` +} +type LoadBalanceRequest_ClientStats struct { + ClientStats *ClientStats `protobuf:"bytes,2,opt,name=client_stats,json=clientStats,oneof"` +} + +func (*LoadBalanceRequest_InitialRequest) isLoadBalanceRequest_LoadBalanceRequestType() {} +func (*LoadBalanceRequest_ClientStats) isLoadBalanceRequest_LoadBalanceRequestType() {} + +func (m *LoadBalanceRequest) GetLoadBalanceRequestType() isLoadBalanceRequest_LoadBalanceRequestType { + if m != nil { + return m.LoadBalanceRequestType + } + return nil +} + +func (m *LoadBalanceRequest) GetInitialRequest() *InitialLoadBalanceRequest { + if x, ok := m.GetLoadBalanceRequestType().(*LoadBalanceRequest_InitialRequest); ok { + return x.InitialRequest + } + return nil +} + +func (m *LoadBalanceRequest) GetClientStats() *ClientStats { + if x, ok := m.GetLoadBalanceRequestType().(*LoadBalanceRequest_ClientStats); ok { + return x.ClientStats + } + return nil +} + +// XXX_OneofFuncs is for the internal use of the proto package. +func (*LoadBalanceRequest) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) { + return _LoadBalanceRequest_OneofMarshaler, _LoadBalanceRequest_OneofUnmarshaler, _LoadBalanceRequest_OneofSizer, []interface{}{ + (*LoadBalanceRequest_InitialRequest)(nil), + (*LoadBalanceRequest_ClientStats)(nil), + } +} + +func _LoadBalanceRequest_OneofMarshaler(msg proto.Message, b *proto.Buffer) error { + m := msg.(*LoadBalanceRequest) + // load_balance_request_type + switch x := m.LoadBalanceRequestType.(type) { + case *LoadBalanceRequest_InitialRequest: + b.EncodeVarint(1<<3 | proto.WireBytes) + if err := b.EncodeMessage(x.InitialRequest); err != nil { + return err + } + case *LoadBalanceRequest_ClientStats: + b.EncodeVarint(2<<3 | proto.WireBytes) + if err := b.EncodeMessage(x.ClientStats); err != nil { + return err + } + case nil: + default: + return fmt.Errorf("LoadBalanceRequest.LoadBalanceRequestType has unexpected type %T", x) + } + return nil +} + +func _LoadBalanceRequest_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) { + m := msg.(*LoadBalanceRequest) + switch tag { + case 1: // load_balance_request_type.initial_request + if wire != proto.WireBytes { + return true, proto.ErrInternalBadWireType + } + msg := new(InitialLoadBalanceRequest) + err := b.DecodeMessage(msg) + m.LoadBalanceRequestType = &LoadBalanceRequest_InitialRequest{msg} + return true, err + case 2: // load_balance_request_type.client_stats + if wire != proto.WireBytes { + return true, proto.ErrInternalBadWireType + } + msg := new(ClientStats) + err := b.DecodeMessage(msg) + m.LoadBalanceRequestType = &LoadBalanceRequest_ClientStats{msg} + return true, err + default: + return false, nil + } +} + +func _LoadBalanceRequest_OneofSizer(msg proto.Message) (n int) { + m := msg.(*LoadBalanceRequest) + // load_balance_request_type + switch x := m.LoadBalanceRequestType.(type) { + case *LoadBalanceRequest_InitialRequest: + s := proto.Size(x.InitialRequest) + n += proto.SizeVarint(1<<3 | proto.WireBytes) + n += proto.SizeVarint(uint64(s)) + n += s + case *LoadBalanceRequest_ClientStats: + s := proto.Size(x.ClientStats) + n += proto.SizeVarint(2<<3 | proto.WireBytes) + n += proto.SizeVarint(uint64(s)) + n += s + case nil: + default: + panic(fmt.Sprintf("proto: unexpected type %T in oneof", x)) + } + return n +} + +type InitialLoadBalanceRequest struct { + // Name of load balanced service (IE, balancer.service.com) + // length should be less than 256 bytes. + Name string `protobuf:"bytes,1,opt,name=name" json:"name,omitempty"` +} + +func (m *InitialLoadBalanceRequest) Reset() { *m = InitialLoadBalanceRequest{} } +func (m *InitialLoadBalanceRequest) String() string { return proto.CompactTextString(m) } +func (*InitialLoadBalanceRequest) ProtoMessage() {} +func (*InitialLoadBalanceRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{3} } + +func (m *InitialLoadBalanceRequest) GetName() string { + if m != nil { + return m.Name + } + return "" +} + +// Contains client level statistics that are useful to load balancing. Each +// count except the timestamp should be reset to zero after reporting the stats. +type ClientStats struct { + // The timestamp of generating the report. + Timestamp *Timestamp `protobuf:"bytes,1,opt,name=timestamp" json:"timestamp,omitempty"` + // The total number of RPCs that started. + NumCallsStarted int64 `protobuf:"varint,2,opt,name=num_calls_started,json=numCallsStarted" json:"num_calls_started,omitempty"` + // The total number of RPCs that finished. + NumCallsFinished int64 `protobuf:"varint,3,opt,name=num_calls_finished,json=numCallsFinished" json:"num_calls_finished,omitempty"` + // The total number of RPCs that were dropped by the client because of rate + // limiting. + NumCallsFinishedWithDropForRateLimiting int64 `protobuf:"varint,4,opt,name=num_calls_finished_with_drop_for_rate_limiting,json=numCallsFinishedWithDropForRateLimiting" json:"num_calls_finished_with_drop_for_rate_limiting,omitempty"` + // The total number of RPCs that were dropped by the client because of load + // balancing. + NumCallsFinishedWithDropForLoadBalancing int64 `protobuf:"varint,5,opt,name=num_calls_finished_with_drop_for_load_balancing,json=numCallsFinishedWithDropForLoadBalancing" json:"num_calls_finished_with_drop_for_load_balancing,omitempty"` + // The total number of RPCs that failed to reach a server except dropped RPCs. + NumCallsFinishedWithClientFailedToSend int64 `protobuf:"varint,6,opt,name=num_calls_finished_with_client_failed_to_send,json=numCallsFinishedWithClientFailedToSend" json:"num_calls_finished_with_client_failed_to_send,omitempty"` + // The total number of RPCs that finished and are known to have been received + // by a server. + NumCallsFinishedKnownReceived int64 `protobuf:"varint,7,opt,name=num_calls_finished_known_received,json=numCallsFinishedKnownReceived" json:"num_calls_finished_known_received,omitempty"` +} + +func (m *ClientStats) Reset() { *m = ClientStats{} } +func (m *ClientStats) String() string { return proto.CompactTextString(m) } +func (*ClientStats) ProtoMessage() {} +func (*ClientStats) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{4} } + +func (m *ClientStats) GetTimestamp() *Timestamp { + if m != nil { + return m.Timestamp + } + return nil +} + +func (m *ClientStats) GetNumCallsStarted() int64 { + if m != nil { + return m.NumCallsStarted + } + return 0 +} + +func (m *ClientStats) GetNumCallsFinished() int64 { + if m != nil { + return m.NumCallsFinished + } + return 0 +} + +func (m *ClientStats) GetNumCallsFinishedWithDropForRateLimiting() int64 { + if m != nil { + return m.NumCallsFinishedWithDropForRateLimiting + } + return 0 +} + +func (m *ClientStats) GetNumCallsFinishedWithDropForLoadBalancing() int64 { + if m != nil { + return m.NumCallsFinishedWithDropForLoadBalancing + } + return 0 +} + +func (m *ClientStats) GetNumCallsFinishedWithClientFailedToSend() int64 { + if m != nil { + return m.NumCallsFinishedWithClientFailedToSend + } + return 0 +} + +func (m *ClientStats) GetNumCallsFinishedKnownReceived() int64 { + if m != nil { + return m.NumCallsFinishedKnownReceived + } + return 0 +} + +type LoadBalanceResponse struct { + // Types that are valid to be assigned to LoadBalanceResponseType: + // *LoadBalanceResponse_InitialResponse + // *LoadBalanceResponse_ServerList + LoadBalanceResponseType isLoadBalanceResponse_LoadBalanceResponseType `protobuf_oneof:"load_balance_response_type"` +} + +func (m *LoadBalanceResponse) Reset() { *m = LoadBalanceResponse{} } +func (m *LoadBalanceResponse) String() string { return proto.CompactTextString(m) } +func (*LoadBalanceResponse) ProtoMessage() {} +func (*LoadBalanceResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{5} } + +type isLoadBalanceResponse_LoadBalanceResponseType interface { + isLoadBalanceResponse_LoadBalanceResponseType() +} + +type LoadBalanceResponse_InitialResponse struct { + InitialResponse *InitialLoadBalanceResponse `protobuf:"bytes,1,opt,name=initial_response,json=initialResponse,oneof"` +} +type LoadBalanceResponse_ServerList struct { + ServerList *ServerList `protobuf:"bytes,2,opt,name=server_list,json=serverList,oneof"` +} + +func (*LoadBalanceResponse_InitialResponse) isLoadBalanceResponse_LoadBalanceResponseType() {} +func (*LoadBalanceResponse_ServerList) isLoadBalanceResponse_LoadBalanceResponseType() {} + +func (m *LoadBalanceResponse) GetLoadBalanceResponseType() isLoadBalanceResponse_LoadBalanceResponseType { + if m != nil { + return m.LoadBalanceResponseType + } + return nil +} + +func (m *LoadBalanceResponse) GetInitialResponse() *InitialLoadBalanceResponse { + if x, ok := m.GetLoadBalanceResponseType().(*LoadBalanceResponse_InitialResponse); ok { + return x.InitialResponse + } + return nil +} + +func (m *LoadBalanceResponse) GetServerList() *ServerList { + if x, ok := m.GetLoadBalanceResponseType().(*LoadBalanceResponse_ServerList); ok { + return x.ServerList + } + return nil +} + +// XXX_OneofFuncs is for the internal use of the proto package. +func (*LoadBalanceResponse) XXX_OneofFuncs() (func(msg proto.Message, b *proto.Buffer) error, func(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error), func(msg proto.Message) (n int), []interface{}) { + return _LoadBalanceResponse_OneofMarshaler, _LoadBalanceResponse_OneofUnmarshaler, _LoadBalanceResponse_OneofSizer, []interface{}{ + (*LoadBalanceResponse_InitialResponse)(nil), + (*LoadBalanceResponse_ServerList)(nil), + } +} + +func _LoadBalanceResponse_OneofMarshaler(msg proto.Message, b *proto.Buffer) error { + m := msg.(*LoadBalanceResponse) + // load_balance_response_type + switch x := m.LoadBalanceResponseType.(type) { + case *LoadBalanceResponse_InitialResponse: + b.EncodeVarint(1<<3 | proto.WireBytes) + if err := b.EncodeMessage(x.InitialResponse); err != nil { + return err + } + case *LoadBalanceResponse_ServerList: + b.EncodeVarint(2<<3 | proto.WireBytes) + if err := b.EncodeMessage(x.ServerList); err != nil { + return err + } + case nil: + default: + return fmt.Errorf("LoadBalanceResponse.LoadBalanceResponseType has unexpected type %T", x) + } + return nil +} + +func _LoadBalanceResponse_OneofUnmarshaler(msg proto.Message, tag, wire int, b *proto.Buffer) (bool, error) { + m := msg.(*LoadBalanceResponse) + switch tag { + case 1: // load_balance_response_type.initial_response + if wire != proto.WireBytes { + return true, proto.ErrInternalBadWireType + } + msg := new(InitialLoadBalanceResponse) + err := b.DecodeMessage(msg) + m.LoadBalanceResponseType = &LoadBalanceResponse_InitialResponse{msg} + return true, err + case 2: // load_balance_response_type.server_list + if wire != proto.WireBytes { + return true, proto.ErrInternalBadWireType + } + msg := new(ServerList) + err := b.DecodeMessage(msg) + m.LoadBalanceResponseType = &LoadBalanceResponse_ServerList{msg} + return true, err + default: + return false, nil + } +} + +func _LoadBalanceResponse_OneofSizer(msg proto.Message) (n int) { + m := msg.(*LoadBalanceResponse) + // load_balance_response_type + switch x := m.LoadBalanceResponseType.(type) { + case *LoadBalanceResponse_InitialResponse: + s := proto.Size(x.InitialResponse) + n += proto.SizeVarint(1<<3 | proto.WireBytes) + n += proto.SizeVarint(uint64(s)) + n += s + case *LoadBalanceResponse_ServerList: + s := proto.Size(x.ServerList) + n += proto.SizeVarint(2<<3 | proto.WireBytes) + n += proto.SizeVarint(uint64(s)) + n += s + case nil: + default: + panic(fmt.Sprintf("proto: unexpected type %T in oneof", x)) + } + return n +} + +type InitialLoadBalanceResponse struct { + // This is an application layer redirect that indicates the client should use + // the specified server for load balancing. When this field is non-empty in + // the response, the client should open a separate connection to the + // load_balancer_delegate and call the BalanceLoad method. Its length should + // be less than 64 bytes. + LoadBalancerDelegate string `protobuf:"bytes,1,opt,name=load_balancer_delegate,json=loadBalancerDelegate" json:"load_balancer_delegate,omitempty"` + // This interval defines how often the client should send the client stats + // to the load balancer. Stats should only be reported when the duration is + // positive. + ClientStatsReportInterval *Duration `protobuf:"bytes,2,opt,name=client_stats_report_interval,json=clientStatsReportInterval" json:"client_stats_report_interval,omitempty"` +} + +func (m *InitialLoadBalanceResponse) Reset() { *m = InitialLoadBalanceResponse{} } +func (m *InitialLoadBalanceResponse) String() string { return proto.CompactTextString(m) } +func (*InitialLoadBalanceResponse) ProtoMessage() {} +func (*InitialLoadBalanceResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{6} } + +func (m *InitialLoadBalanceResponse) GetLoadBalancerDelegate() string { + if m != nil { + return m.LoadBalancerDelegate + } + return "" +} + +func (m *InitialLoadBalanceResponse) GetClientStatsReportInterval() *Duration { + if m != nil { + return m.ClientStatsReportInterval + } + return nil +} + +type ServerList struct { + // Contains a list of servers selected by the load balancer. The list will + // be updated when server resolutions change or as needed to balance load + // across more servers. The client should consume the server list in order + // unless instructed otherwise via the client_config. + Servers []*Server `protobuf:"bytes,1,rep,name=servers" json:"servers,omitempty"` + // Indicates the amount of time that the client should consider this server + // list as valid. It may be considered stale after waiting this interval of + // time after receiving the list. If the interval is not positive, the + // client can assume the list is valid until the next list is received. + ExpirationInterval *Duration `protobuf:"bytes,3,opt,name=expiration_interval,json=expirationInterval" json:"expiration_interval,omitempty"` +} + +func (m *ServerList) Reset() { *m = ServerList{} } +func (m *ServerList) String() string { return proto.CompactTextString(m) } +func (*ServerList) ProtoMessage() {} +func (*ServerList) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{7} } + +func (m *ServerList) GetServers() []*Server { + if m != nil { + return m.Servers + } + return nil +} + +func (m *ServerList) GetExpirationInterval() *Duration { + if m != nil { + return m.ExpirationInterval + } + return nil +} + +// Contains server information. When none of the [drop_for_*] fields are true, +// use the other fields. When drop_for_rate_limiting is true, ignore all other +// fields. Use drop_for_load_balancing only when it is true and +// drop_for_rate_limiting is false. +type Server struct { + // A resolved address for the server, serialized in network-byte-order. It may + // either be an IPv4 or IPv6 address. + IpAddress []byte `protobuf:"bytes,1,opt,name=ip_address,json=ipAddress,proto3" json:"ip_address,omitempty"` + // A resolved port number for the server. + Port int32 `protobuf:"varint,2,opt,name=port" json:"port,omitempty"` + // An opaque but printable token given to the frontend for each pick. All + // frontend requests for that pick must include the token in its initial + // metadata. The token is used by the backend to verify the request and to + // allow the backend to report load to the gRPC LB system. + // + // Its length is variable but less than 50 bytes. + LoadBalanceToken string `protobuf:"bytes,3,opt,name=load_balance_token,json=loadBalanceToken" json:"load_balance_token,omitempty"` + // Indicates whether this particular request should be dropped by the client + // for rate limiting. + DropForRateLimiting bool `protobuf:"varint,4,opt,name=drop_for_rate_limiting,json=dropForRateLimiting" json:"drop_for_rate_limiting,omitempty"` + // Indicates whether this particular request should be dropped by the client + // for load balancing. + DropForLoadBalancing bool `protobuf:"varint,5,opt,name=drop_for_load_balancing,json=dropForLoadBalancing" json:"drop_for_load_balancing,omitempty"` +} + +func (m *Server) Reset() { *m = Server{} } +func (m *Server) String() string { return proto.CompactTextString(m) } +func (*Server) ProtoMessage() {} +func (*Server) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{8} } + +func (m *Server) GetIpAddress() []byte { + if m != nil { + return m.IpAddress + } + return nil +} + +func (m *Server) GetPort() int32 { + if m != nil { + return m.Port + } + return 0 +} + +func (m *Server) GetLoadBalanceToken() string { + if m != nil { + return m.LoadBalanceToken + } + return "" +} + +func (m *Server) GetDropForRateLimiting() bool { + if m != nil { + return m.DropForRateLimiting + } + return false +} + +func (m *Server) GetDropForLoadBalancing() bool { + if m != nil { + return m.DropForLoadBalancing + } + return false +} + +func init() { + proto.RegisterType((*Duration)(nil), "grpc.lb.v1.Duration") + proto.RegisterType((*Timestamp)(nil), "grpc.lb.v1.Timestamp") + proto.RegisterType((*LoadBalanceRequest)(nil), "grpc.lb.v1.LoadBalanceRequest") + proto.RegisterType((*InitialLoadBalanceRequest)(nil), "grpc.lb.v1.InitialLoadBalanceRequest") + proto.RegisterType((*ClientStats)(nil), "grpc.lb.v1.ClientStats") + proto.RegisterType((*LoadBalanceResponse)(nil), "grpc.lb.v1.LoadBalanceResponse") + proto.RegisterType((*InitialLoadBalanceResponse)(nil), "grpc.lb.v1.InitialLoadBalanceResponse") + proto.RegisterType((*ServerList)(nil), "grpc.lb.v1.ServerList") + proto.RegisterType((*Server)(nil), "grpc.lb.v1.Server") +} + +func init() { proto.RegisterFile("grpclb.proto", fileDescriptor0) } + +var fileDescriptor0 = []byte{ + // 733 bytes of a gzipped FileDescriptorProto + 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x55, 0xdd, 0x4e, 0x1b, 0x39, + 0x14, 0x66, 0x36, 0xfc, 0xe5, 0x24, 0x5a, 0x58, 0x93, 0x85, 0xc0, 0xc2, 0x2e, 0x1b, 0xa9, 0x34, + 0xaa, 0x68, 0x68, 0x43, 0x7b, 0xd1, 0x9f, 0x9b, 0x02, 0x45, 0x41, 0xe5, 0xa2, 0x72, 0xa8, 0x7a, + 0x55, 0x59, 0x4e, 0xc6, 0x80, 0xc5, 0xc4, 0x9e, 0xda, 0x4e, 0x68, 0x2f, 0x7b, 0xd9, 0x47, 0xe9, + 0x63, 0x54, 0x7d, 0x86, 0xbe, 0x4f, 0x65, 0x7b, 0x26, 0x33, 0x90, 0x1f, 0xd4, 0xbb, 0xf1, 0xf1, + 0x77, 0xbe, 0xf3, 0xf9, 0xd8, 0xdf, 0x19, 0x28, 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0x12, 0x00, 0x64, 0xc7, 0x44, 0xbb, 0x76, 0x62, 0xd9, 0x95, 0x9d, 0x58, 0x85, 0x7a, 0xa9, + 0x89, 0x46, 0xfb, 0x81, 0x53, 0x08, 0x7a, 0x0d, 0x2b, 0xec, 0x53, 0xcc, 0x7d, 0x95, 0x4c, 0x4a, + 0x61, 0x8a, 0x14, 0x94, 0x25, 0x0c, 0x35, 0xfc, 0x0c, 0x60, 0xde, 0x53, 0xa3, 0x2d, 0x00, 0x1e, + 0x13, 0x1a, 0x86, 0x8a, 0x69, 0x3f, 0x34, 0xcb, 0xb8, 0xc8, 0xe3, 0x57, 0x3e, 0x60, 0xe7, 0x87, + 0x55, 0x9f, 0x4c, 0x4d, 0xf7, 0x6d, 0xed, 0x7c, 0xe3, 0x2e, 0x8c, 0xbc, 0x62, 0xc2, 0x69, 0x28, + 0xe2, 0xe5, 0x5c, 0x2b, 0xcf, 0x6c, 0x1c, 0xed, 0xc3, 0xea, 0x14, 0xdb, 0x2e, 0xe2, 0x95, 0x70, + 0x8c, 0x45, 0x9f, 0xc2, 0xda, 0x34, 0x2b, 0x2e, 0xe2, 0x4a, 0x38, 0xc6, 0x76, 0xcd, 0x0e, 0x94, + 0x73, 0xf7, 0xaf, 0x10, 0x86, 0x52, 0xf2, 0x6d, 0xc3, 0xe8, 0xdf, 0x7c, 0x83, 0x46, 0x87, 0xe5, + 0xc6, 0x7f, 0x13, 0xf7, 0xfd, 0x43, 0xaa, 0x07, 0x8f, 0x82, 0xce, 0xbc, 0xfb, 0x7d, 0xed, 0xff, + 0x0a, 0x00, 0x00, 0xff, 0xff, 0x64, 0xbf, 0xda, 0x5e, 0xce, 0x06, 0x00, 0x00, +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/grpclb.proto b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/grpclb.proto new file mode 100644 index 00000000..b13b3438 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclb/grpc_lb_v1/grpclb.proto @@ -0,0 +1,164 @@ +// Copyright 2016 gRPC authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +syntax = "proto3"; + +package grpc.lb.v1; + +message Duration { + // Signed seconds of the span of time. Must be from -315,576,000,000 + // to +315,576,000,000 inclusive. + int64 seconds = 1; + + // Signed fractions of a second at nanosecond resolution of the span + // of time. Durations less than one second are represented with a 0 + // `seconds` field and a positive or negative `nanos` field. For durations + // of one second or more, a non-zero value for the `nanos` field must be + // of the same sign as the `seconds` field. Must be from -999,999,999 + // to +999,999,999 inclusive. + int32 nanos = 2; +} + +message Timestamp { + + // Represents seconds of UTC time since Unix epoch + // 1970-01-01T00:00:00Z. Must be from 0001-01-01T00:00:00Z to + // 9999-12-31T23:59:59Z inclusive. + int64 seconds = 1; + + // Non-negative fractions of a second at nanosecond resolution. Negative + // second values with fractions must still have non-negative nanos values + // that count forward in time. Must be from 0 to 999,999,999 + // inclusive. + int32 nanos = 2; +} + +service LoadBalancer { + // Bidirectional rpc to get a list of servers. + rpc BalanceLoad(stream LoadBalanceRequest) + returns (stream LoadBalanceResponse); +} + +message LoadBalanceRequest { + oneof load_balance_request_type { + // This message should be sent on the first request to the load balancer. + InitialLoadBalanceRequest initial_request = 1; + + // The client stats should be periodically reported to the load balancer + // based on the duration defined in the InitialLoadBalanceResponse. + ClientStats client_stats = 2; + } +} + +message InitialLoadBalanceRequest { + // Name of load balanced service (IE, balancer.service.com) + // length should be less than 256 bytes. + string name = 1; +} + +// Contains client level statistics that are useful to load balancing. Each +// count except the timestamp should be reset to zero after reporting the stats. +message ClientStats { + // The timestamp of generating the report. + Timestamp timestamp = 1; + + // The total number of RPCs that started. + int64 num_calls_started = 2; + + // The total number of RPCs that finished. + int64 num_calls_finished = 3; + + // The total number of RPCs that were dropped by the client because of rate + // limiting. + int64 num_calls_finished_with_drop_for_rate_limiting = 4; + + // The total number of RPCs that were dropped by the client because of load + // balancing. + int64 num_calls_finished_with_drop_for_load_balancing = 5; + + // The total number of RPCs that failed to reach a server except dropped RPCs. + int64 num_calls_finished_with_client_failed_to_send = 6; + + // The total number of RPCs that finished and are known to have been received + // by a server. + int64 num_calls_finished_known_received = 7; +} + +message LoadBalanceResponse { + oneof load_balance_response_type { + // This message should be sent on the first response to the client. + InitialLoadBalanceResponse initial_response = 1; + + // Contains the list of servers selected by the load balancer. The client + // should send requests to these servers in the specified order. + ServerList server_list = 2; + } +} + +message InitialLoadBalanceResponse { + // This is an application layer redirect that indicates the client should use + // the specified server for load balancing. When this field is non-empty in + // the response, the client should open a separate connection to the + // load_balancer_delegate and call the BalanceLoad method. Its length should + // be less than 64 bytes. + string load_balancer_delegate = 1; + + // This interval defines how often the client should send the client stats + // to the load balancer. Stats should only be reported when the duration is + // positive. + Duration client_stats_report_interval = 2; +} + +message ServerList { + // Contains a list of servers selected by the load balancer. The list will + // be updated when server resolutions change or as needed to balance load + // across more servers. The client should consume the server list in order + // unless instructed otherwise via the client_config. + repeated Server servers = 1; + + // Indicates the amount of time that the client should consider this server + // list as valid. It may be considered stale after waiting this interval of + // time after receiving the list. If the interval is not positive, the + // client can assume the list is valid until the next list is received. + Duration expiration_interval = 3; +} + +// Contains server information. When none of the [drop_for_*] fields are true, +// use the other fields. When drop_for_rate_limiting is true, ignore all other +// fields. Use drop_for_load_balancing only when it is true and +// drop_for_rate_limiting is false. +message Server { + // A resolved address for the server, serialized in network-byte-order. It may + // either be an IPv4 or IPv6 address. + bytes ip_address = 1; + + // A resolved port number for the server. + int32 port = 2; + + // An opaque but printable token given to the frontend for each pick. All + // frontend requests for that pick must include the token in its initial + // metadata. The token is used by the backend to verify the request and to + // allow the backend to report load to the gRPC LB system. + // + // Its length is variable but less than 50 bytes. + string load_balance_token = 3; + + // Indicates whether this particular request should be dropped by the client + // for rate limiting. + bool drop_for_rate_limiting = 4; + + // Indicates whether this particular request should be dropped by the client + // for load balancing. + bool drop_for_load_balancing = 5; +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclog/grpclog.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclog/grpclog.go new file mode 100644 index 00000000..16a7d888 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclog/grpclog.go @@ -0,0 +1,123 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// Package grpclog defines logging for grpc. +// +// All logs in transport package only go to verbose level 2. +// All logs in other packages in grpc are logged in spite of the verbosity level. +// +// In the default logger, +// severity level can be set by environment variable GRPC_GO_LOG_SEVERITY_LEVEL, +// verbosity level can be set by GRPC_GO_LOG_VERBOSITY_LEVEL. +package grpclog // import "google.golang.org/grpc/grpclog" + +import "os" + +var logger = newLoggerV2() + +// V reports whether verbosity level l is at least the requested verbose level. +func V(l int) bool { + return logger.V(l) +} + +// Info logs to the INFO log. +func Info(args ...interface{}) { + logger.Info(args...) +} + +// Infof logs to the INFO log. Arguments are handled in the manner of fmt.Printf. +func Infof(format string, args ...interface{}) { + logger.Infof(format, args...) +} + +// Infoln logs to the INFO log. Arguments are handled in the manner of fmt.Println. +func Infoln(args ...interface{}) { + logger.Infoln(args...) +} + +// Warning logs to the WARNING log. +func Warning(args ...interface{}) { + logger.Warning(args...) +} + +// Warningf logs to the WARNING log. Arguments are handled in the manner of fmt.Printf. +func Warningf(format string, args ...interface{}) { + logger.Warningf(format, args...) +} + +// Warningln logs to the WARNING log. Arguments are handled in the manner of fmt.Println. +func Warningln(args ...interface{}) { + logger.Warningln(args...) +} + +// Error logs to the ERROR log. +func Error(args ...interface{}) { + logger.Error(args...) +} + +// Errorf logs to the ERROR log. Arguments are handled in the manner of fmt.Printf. +func Errorf(format string, args ...interface{}) { + logger.Errorf(format, args...) +} + +// Errorln logs to the ERROR log. Arguments are handled in the manner of fmt.Println. +func Errorln(args ...interface{}) { + logger.Errorln(args...) +} + +// Fatal logs to the FATAL log. Arguments are handled in the manner of fmt.Print. +// It calls os.Exit() with exit code 1. +func Fatal(args ...interface{}) { + logger.Fatal(args...) + // Make sure fatal logs will exit. + os.Exit(1) +} + +// Fatalf logs to the FATAL log. Arguments are handled in the manner of fmt.Printf. +// It calles os.Exit() with exit code 1. +func Fatalf(format string, args ...interface{}) { + logger.Fatalf(format, args...) + // Make sure fatal logs will exit. + os.Exit(1) +} + +// Fatalln logs to the FATAL log. Arguments are handled in the manner of fmt.Println. +// It calle os.Exit()) with exit code 1. +func Fatalln(args ...interface{}) { + logger.Fatalln(args...) + // Make sure fatal logs will exit. + os.Exit(1) +} + +// Print prints to the logger. Arguments are handled in the manner of fmt.Print. +// Deprecated: use Info. +func Print(args ...interface{}) { + logger.Info(args...) +} + +// Printf prints to the logger. Arguments are handled in the manner of fmt.Printf. +// Deprecated: use Infof. +func Printf(format string, args ...interface{}) { + logger.Infof(format, args...) +} + +// Println prints to the logger. Arguments are handled in the manner of fmt.Println. +// Deprecated: use Infoln. +func Println(args ...interface{}) { + logger.Infoln(args...) +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclog/logger.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclog/logger.go index 3b293307..d03b2397 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclog/logger.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclog/logger.go @@ -1,52 +1,25 @@ /* * - * Copyright 2015, Google Inc. - * All rights reserved. + * Copyright 2015 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ -/* -Package grpclog defines logging for grpc. -*/ -package grpclog // import "google.golang.org/grpc/grpclog" - -import ( - "log" - "os" -) - -// Use golang's standard logger by default. -// Access is not mutex-protected: do not modify except in init() -// functions. -var logger Logger = log.New(os.Stderr, "", log.LstdFlags) +package grpclog // Logger mimics golang's standard Logger as an interface. +// Deprecated: use LoggerV2. type Logger interface { Fatal(args ...interface{}) Fatalf(format string, args ...interface{}) @@ -58,36 +31,53 @@ type Logger interface { // SetLogger sets the logger that is used in grpc. Call only from // init() functions. +// Deprecated: use SetLoggerV2. func SetLogger(l Logger) { - logger = l + logger = &loggerWrapper{Logger: l} +} + +// loggerWrapper wraps Logger into a LoggerV2. +type loggerWrapper struct { + Logger +} + +func (g *loggerWrapper) Info(args ...interface{}) { + g.Logger.Print(args...) +} + +func (g *loggerWrapper) Infoln(args ...interface{}) { + g.Logger.Println(args...) +} + +func (g *loggerWrapper) Infof(format string, args ...interface{}) { + g.Logger.Printf(format, args...) +} + +func (g *loggerWrapper) Warning(args ...interface{}) { + g.Logger.Print(args...) } -// Fatal is equivalent to Print() followed by a call to os.Exit() with a non-zero exit code. -func Fatal(args ...interface{}) { - logger.Fatal(args...) +func (g *loggerWrapper) Warningln(args ...interface{}) { + g.Logger.Println(args...) } -// Fatalf is equivalent to Printf() followed by a call to os.Exit() with a non-zero exit code. -func Fatalf(format string, args ...interface{}) { - logger.Fatalf(format, args...) +func (g *loggerWrapper) Warningf(format string, args ...interface{}) { + g.Logger.Printf(format, args...) } -// Fatalln is equivalent to Println() followed by a call to os.Exit()) with a non-zero exit code. -func Fatalln(args ...interface{}) { - logger.Fatalln(args...) +func (g *loggerWrapper) Error(args ...interface{}) { + g.Logger.Print(args...) } -// Print prints to the logger. Arguments are handled in the manner of fmt.Print. -func Print(args ...interface{}) { - logger.Print(args...) +func (g *loggerWrapper) Errorln(args ...interface{}) { + g.Logger.Println(args...) } -// Printf prints to the logger. Arguments are handled in the manner of fmt.Printf. -func Printf(format string, args ...interface{}) { - logger.Printf(format, args...) +func (g *loggerWrapper) Errorf(format string, args ...interface{}) { + g.Logger.Printf(format, args...) } -// Println prints to the logger. Arguments are handled in the manner of fmt.Println. -func Println(args ...interface{}) { - logger.Println(args...) +func (g *loggerWrapper) V(l int) bool { + // Returns true for all verbose level. + return true } diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclog/loggerv2.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclog/loggerv2.go new file mode 100644 index 00000000..d4932577 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/grpclog/loggerv2.go @@ -0,0 +1,195 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpclog + +import ( + "io" + "io/ioutil" + "log" + "os" + "strconv" +) + +// LoggerV2 does underlying logging work for grpclog. +type LoggerV2 interface { + // Info logs to INFO log. Arguments are handled in the manner of fmt.Print. + Info(args ...interface{}) + // Infoln logs to INFO log. Arguments are handled in the manner of fmt.Println. + Infoln(args ...interface{}) + // Infof logs to INFO log. Arguments are handled in the manner of fmt.Printf. + Infof(format string, args ...interface{}) + // Warning logs to WARNING log. Arguments are handled in the manner of fmt.Print. + Warning(args ...interface{}) + // Warningln logs to WARNING log. Arguments are handled in the manner of fmt.Println. + Warningln(args ...interface{}) + // Warningf logs to WARNING log. Arguments are handled in the manner of fmt.Printf. + Warningf(format string, args ...interface{}) + // Error logs to ERROR log. Arguments are handled in the manner of fmt.Print. + Error(args ...interface{}) + // Errorln logs to ERROR log. Arguments are handled in the manner of fmt.Println. + Errorln(args ...interface{}) + // Errorf logs to ERROR log. Arguments are handled in the manner of fmt.Printf. + Errorf(format string, args ...interface{}) + // Fatal logs to ERROR log. Arguments are handled in the manner of fmt.Print. + // gRPC ensures that all Fatal logs will exit with os.Exit(1). + // Implementations may also call os.Exit() with a non-zero exit code. + Fatal(args ...interface{}) + // Fatalln logs to ERROR log. Arguments are handled in the manner of fmt.Println. + // gRPC ensures that all Fatal logs will exit with os.Exit(1). + // Implementations may also call os.Exit() with a non-zero exit code. + Fatalln(args ...interface{}) + // Fatalf logs to ERROR log. Arguments are handled in the manner of fmt.Printf. + // gRPC ensures that all Fatal logs will exit with os.Exit(1). + // Implementations may also call os.Exit() with a non-zero exit code. + Fatalf(format string, args ...interface{}) + // V reports whether verbosity level l is at least the requested verbose level. + V(l int) bool +} + +// SetLoggerV2 sets logger that is used in grpc to a V2 logger. +// Not mutex-protected, should be called before any gRPC functions. +func SetLoggerV2(l LoggerV2) { + logger = l +} + +const ( + // infoLog indicates Info severity. + infoLog int = iota + // warningLog indicates Warning severity. + warningLog + // errorLog indicates Error severity. + errorLog + // fatalLog indicates Fatal severity. + fatalLog +) + +// severityName contains the string representation of each severity. +var severityName = []string{ + infoLog: "INFO", + warningLog: "WARNING", + errorLog: "ERROR", + fatalLog: "FATAL", +} + +// loggerT is the default logger used by grpclog. +type loggerT struct { + m []*log.Logger + v int +} + +// NewLoggerV2 creates a loggerV2 with the provided writers. +// Fatal logs will be written to errorW, warningW, infoW, followed by exit(1). +// Error logs will be written to errorW, warningW and infoW. +// Warning logs will be written to warningW and infoW. +// Info logs will be written to infoW. +func NewLoggerV2(infoW, warningW, errorW io.Writer) LoggerV2 { + return NewLoggerV2WithVerbosity(infoW, warningW, errorW, 0) +} + +// NewLoggerV2WithVerbosity creates a loggerV2 with the provided writers and +// verbosity level. +func NewLoggerV2WithVerbosity(infoW, warningW, errorW io.Writer, v int) LoggerV2 { + var m []*log.Logger + m = append(m, log.New(infoW, severityName[infoLog]+": ", log.LstdFlags)) + m = append(m, log.New(io.MultiWriter(infoW, warningW), severityName[warningLog]+": ", log.LstdFlags)) + ew := io.MultiWriter(infoW, warningW, errorW) // ew will be used for error and fatal. + m = append(m, log.New(ew, severityName[errorLog]+": ", log.LstdFlags)) + m = append(m, log.New(ew, severityName[fatalLog]+": ", log.LstdFlags)) + return &loggerT{m: m, v: v} +} + +// newLoggerV2 creates a loggerV2 to be used as default logger. +// All logs are written to stderr. +func newLoggerV2() LoggerV2 { + errorW := ioutil.Discard + warningW := ioutil.Discard + infoW := ioutil.Discard + + logLevel := os.Getenv("GRPC_GO_LOG_SEVERITY_LEVEL") + switch logLevel { + case "", "ERROR", "error": // If env is unset, set level to ERROR. + errorW = os.Stderr + case "WARNING", "warning": + warningW = os.Stderr + case "INFO", "info": + infoW = os.Stderr + } + + var v int + vLevel := os.Getenv("GRPC_GO_LOG_VERBOSITY_LEVEL") + if vl, err := strconv.Atoi(vLevel); err == nil { + v = vl + } + return NewLoggerV2WithVerbosity(infoW, warningW, errorW, v) +} + +func (g *loggerT) Info(args ...interface{}) { + g.m[infoLog].Print(args...) +} + +func (g *loggerT) Infoln(args ...interface{}) { + g.m[infoLog].Println(args...) +} + +func (g *loggerT) Infof(format string, args ...interface{}) { + g.m[infoLog].Printf(format, args...) +} + +func (g *loggerT) Warning(args ...interface{}) { + g.m[warningLog].Print(args...) +} + +func (g *loggerT) Warningln(args ...interface{}) { + g.m[warningLog].Println(args...) +} + +func (g *loggerT) Warningf(format string, args ...interface{}) { + g.m[warningLog].Printf(format, args...) +} + +func (g *loggerT) Error(args ...interface{}) { + g.m[errorLog].Print(args...) +} + +func (g *loggerT) Errorln(args ...interface{}) { + g.m[errorLog].Println(args...) +} + +func (g *loggerT) Errorf(format string, args ...interface{}) { + g.m[errorLog].Printf(format, args...) +} + +func (g *loggerT) Fatal(args ...interface{}) { + g.m[fatalLog].Fatal(args...) + // No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit(). +} + +func (g *loggerT) Fatalln(args ...interface{}) { + g.m[fatalLog].Fatalln(args...) + // No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit(). +} + +func (g *loggerT) Fatalf(format string, args ...interface{}) { + g.m[fatalLog].Fatalf(format, args...) + // No need to call os.Exit() again because log.Logger.Fatal() calls os.Exit(). +} + +func (g *loggerT) V(l int) bool { + return l <= g.v +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go new file mode 100644 index 00000000..89c4d459 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/health/grpc_health_v1/health.pb.go @@ -0,0 +1,176 @@ +// Code generated by protoc-gen-go. +// source: health.proto +// DO NOT EDIT! + +/* +Package grpc_health_v1 is a generated protocol buffer package. + +It is generated from these files: + health.proto + +It has these top-level messages: + HealthCheckRequest + HealthCheckResponse +*/ +package grpc_health_v1 + +import proto "github.com/golang/protobuf/proto" +import fmt "fmt" +import math "math" + +import ( + context "golang.org/x/net/context" + grpc "google.golang.org/grpc" +) + +// Reference imports to suppress errors if they are not otherwise used. +var _ = proto.Marshal +var _ = fmt.Errorf +var _ = math.Inf + +// This is a compile-time assertion to ensure that this generated file +// is compatible with the proto package it is being compiled against. +// A compilation error at this line likely means your copy of the +// proto package needs to be updated. +const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package + +type HealthCheckResponse_ServingStatus int32 + +const ( + HealthCheckResponse_UNKNOWN HealthCheckResponse_ServingStatus = 0 + HealthCheckResponse_SERVING HealthCheckResponse_ServingStatus = 1 + HealthCheckResponse_NOT_SERVING HealthCheckResponse_ServingStatus = 2 +) + +var HealthCheckResponse_ServingStatus_name = map[int32]string{ + 0: "UNKNOWN", + 1: "SERVING", + 2: "NOT_SERVING", +} +var HealthCheckResponse_ServingStatus_value = map[string]int32{ + "UNKNOWN": 0, + "SERVING": 1, + "NOT_SERVING": 2, +} + +func (x HealthCheckResponse_ServingStatus) String() string { + return proto.EnumName(HealthCheckResponse_ServingStatus_name, int32(x)) +} +func (HealthCheckResponse_ServingStatus) EnumDescriptor() ([]byte, []int) { + return fileDescriptor0, []int{1, 0} +} + +type HealthCheckRequest struct { + Service string `protobuf:"bytes,1,opt,name=service" json:"service,omitempty"` +} + +func (m *HealthCheckRequest) Reset() { *m = HealthCheckRequest{} } +func (m *HealthCheckRequest) String() string { return proto.CompactTextString(m) } +func (*HealthCheckRequest) ProtoMessage() {} +func (*HealthCheckRequest) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{0} } + +type HealthCheckResponse struct { + Status HealthCheckResponse_ServingStatus `protobuf:"varint,1,opt,name=status,enum=grpc.health.v1.HealthCheckResponse_ServingStatus" json:"status,omitempty"` +} + +func (m *HealthCheckResponse) Reset() { *m = HealthCheckResponse{} } +func (m *HealthCheckResponse) String() string { return proto.CompactTextString(m) } +func (*HealthCheckResponse) ProtoMessage() {} +func (*HealthCheckResponse) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{1} } + +func init() { + proto.RegisterType((*HealthCheckRequest)(nil), "grpc.health.v1.HealthCheckRequest") + proto.RegisterType((*HealthCheckResponse)(nil), "grpc.health.v1.HealthCheckResponse") + proto.RegisterEnum("grpc.health.v1.HealthCheckResponse_ServingStatus", HealthCheckResponse_ServingStatus_name, HealthCheckResponse_ServingStatus_value) +} + +// Reference imports to suppress errors if they are not otherwise used. +var _ context.Context +var _ grpc.ClientConn + +// This is a compile-time assertion to ensure that this generated file +// is compatible with the grpc package it is being compiled against. +const _ = grpc.SupportPackageIsVersion4 + +// Client API for Health service + +type HealthClient interface { + Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error) +} + +type healthClient struct { + cc *grpc.ClientConn +} + +func NewHealthClient(cc *grpc.ClientConn) HealthClient { + return &healthClient{cc} +} + +func (c *healthClient) Check(ctx context.Context, in *HealthCheckRequest, opts ...grpc.CallOption) (*HealthCheckResponse, error) { + out := new(HealthCheckResponse) + err := grpc.Invoke(ctx, "/grpc.health.v1.Health/Check", in, out, c.cc, opts...) + if err != nil { + return nil, err + } + return out, nil +} + +// Server API for Health service + +type HealthServer interface { + Check(context.Context, *HealthCheckRequest) (*HealthCheckResponse, error) +} + +func RegisterHealthServer(s *grpc.Server, srv HealthServer) { + s.RegisterService(&_Health_serviceDesc, srv) +} + +func _Health_Check_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) { + in := new(HealthCheckRequest) + if err := dec(in); err != nil { + return nil, err + } + if interceptor == nil { + return srv.(HealthServer).Check(ctx, in) + } + info := &grpc.UnaryServerInfo{ + Server: srv, + FullMethod: "/grpc.health.v1.Health/Check", + } + handler := func(ctx context.Context, req interface{}) (interface{}, error) { + return srv.(HealthServer).Check(ctx, req.(*HealthCheckRequest)) + } + return interceptor(ctx, in, info, handler) +} + +var _Health_serviceDesc = grpc.ServiceDesc{ + ServiceName: "grpc.health.v1.Health", + HandlerType: (*HealthServer)(nil), + Methods: []grpc.MethodDesc{ + { + MethodName: "Check", + Handler: _Health_Check_Handler, + }, + }, + Streams: []grpc.StreamDesc{}, + Metadata: "health.proto", +} + +func init() { proto.RegisterFile("health.proto", fileDescriptor0) } + +var fileDescriptor0 = []byte{ + // 204 bytes of a gzipped FileDescriptorProto + 0x1f, 0x8b, 0x08, 0x00, 0x00, 0x09, 0x6e, 0x88, 0x02, 0xff, 0xe2, 0xe2, 0xc9, 0x48, 0x4d, 0xcc, + 0x29, 0xc9, 0xd0, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0xe2, 0x4b, 0x2f, 0x2a, 0x48, 0xd6, 0x83, + 0x0a, 0x95, 0x19, 0x2a, 0xe9, 0x71, 0x09, 0x79, 0x80, 0x39, 0xce, 0x19, 0xa9, 0xc9, 0xd9, 0x41, + 0xa9, 0x85, 0xa5, 0xa9, 0xc5, 0x25, 0x42, 0x12, 0x5c, 0xec, 0xc5, 0xa9, 0x45, 0x65, 0x99, 0xc9, + 0xa9, 0x12, 0x8c, 0x0a, 0x8c, 0x1a, 0x9c, 0x41, 0x30, 0xae, 0xd2, 0x1c, 0x46, 0x2e, 0x61, 0x14, + 0x0d, 0xc5, 0x05, 0xf9, 0x79, 0xc5, 0xa9, 0x42, 0x9e, 0x5c, 0x6c, 0xc5, 0x25, 0x89, 0x25, 0xa5, + 0xc5, 0x60, 0x0d, 0x7c, 0x46, 0x86, 0x7a, 0xa8, 0x16, 0xe9, 0x61, 0xd1, 0xa4, 0x17, 0x0c, 0x32, + 0x34, 0x2f, 0x3d, 0x18, 0xac, 0x31, 0x08, 0x6a, 0x80, 0x92, 0x15, 0x17, 0x2f, 0x8a, 0x84, 0x10, + 0x37, 0x17, 0x7b, 0xa8, 0x9f, 0xb7, 0x9f, 0x7f, 0xb8, 0x9f, 0x00, 0x03, 0x88, 0x13, 0xec, 0x1a, + 0x14, 0xe6, 0xe9, 0xe7, 0x2e, 0xc0, 0x28, 0xc4, 0xcf, 0xc5, 0xed, 0xe7, 0x1f, 0x12, 0x0f, 0x13, + 0x60, 0x32, 0x8a, 0xe2, 0x62, 0x83, 0x58, 0x24, 0x14, 0xc0, 0xc5, 0x0a, 0xb6, 0x4c, 0x48, 0x09, + 0xaf, 0x4b, 0xc0, 0xfe, 0x95, 0x52, 0x26, 0xc2, 0xb5, 0x49, 0x6c, 0xe0, 0x10, 0x34, 0x06, 0x04, + 0x00, 0x00, 0xff, 0xff, 0xac, 0x56, 0x2a, 0xcb, 0x51, 0x01, 0x00, 0x00, +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/health/grpc_health_v1/health.proto b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/health/grpc_health_v1/health.proto new file mode 100644 index 00000000..6072fdc3 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/health/grpc_health_v1/health.proto @@ -0,0 +1,34 @@ +// Copyright 2017 gRPC authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +syntax = "proto3"; + +package grpc.health.v1; + +message HealthCheckRequest { + string service = 1; +} + +message HealthCheckResponse { + enum ServingStatus { + UNKNOWN = 0; + SERVING = 1; + NOT_SERVING = 2; + } + ServingStatus status = 1; +} + +service Health{ + rpc Check(HealthCheckRequest) returns (HealthCheckResponse); +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/health/health.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/health/health.go new file mode 100644 index 00000000..4dccbc76 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/health/health.go @@ -0,0 +1,70 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// Package health provides some utility functions to health-check a server. The implementation +// is based on protobuf. Users need to write their own implementations if other IDLs are used. +package health + +import ( + "sync" + + "golang.org/x/net/context" + "google.golang.org/grpc" + "google.golang.org/grpc/codes" + healthpb "google.golang.org/grpc/health/grpc_health_v1" +) + +// Server implements `service Health`. +type Server struct { + mu sync.Mutex + // statusMap stores the serving status of the services this Server monitors. + statusMap map[string]healthpb.HealthCheckResponse_ServingStatus +} + +// NewServer returns a new Server. +func NewServer() *Server { + return &Server{ + statusMap: make(map[string]healthpb.HealthCheckResponse_ServingStatus), + } +} + +// Check implements `service Health`. +func (s *Server) Check(ctx context.Context, in *healthpb.HealthCheckRequest) (*healthpb.HealthCheckResponse, error) { + s.mu.Lock() + defer s.mu.Unlock() + if in.Service == "" { + // check the server overall health status. + return &healthpb.HealthCheckResponse{ + Status: healthpb.HealthCheckResponse_SERVING, + }, nil + } + if status, ok := s.statusMap[in.Service]; ok { + return &healthpb.HealthCheckResponse{ + Status: status, + }, nil + } + return nil, grpc.Errorf(codes.NotFound, "unknown service") +} + +// SetServingStatus is called when need to reset the serving status of a service +// or insert a new service entry into the statusMap. +func (s *Server) SetServingStatus(service string, status healthpb.HealthCheckResponse_ServingStatus) { + s.mu.Lock() + s.statusMap[service] = status + s.mu.Unlock() +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/interceptor.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/interceptor.go index 8d932efe..06dc825b 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/interceptor.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/interceptor.go @@ -1,33 +1,18 @@ /* * - * Copyright 2016, Google Inc. - * All rights reserved. + * Copyright 2016 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -40,17 +25,17 @@ import ( // UnaryInvoker is called by UnaryClientInterceptor to complete RPCs. type UnaryInvoker func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, opts ...CallOption) error -// UnaryClientInterceptor intercepts the execution of a unary RPC on the client. inovker is the handler to complete the RPC +// UnaryClientInterceptor intercepts the execution of a unary RPC on the client. invoker is the handler to complete the RPC // and it is the responsibility of the interceptor to call it. -// This is the EXPERIMENTAL API. +// This is an EXPERIMENTAL API. type UnaryClientInterceptor func(ctx context.Context, method string, req, reply interface{}, cc *ClientConn, invoker UnaryInvoker, opts ...CallOption) error // Streamer is called by StreamClientInterceptor to create a ClientStream. type Streamer func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, opts ...CallOption) (ClientStream, error) // StreamClientInterceptor intercepts the creation of ClientStream. It may return a custom ClientStream to intercept all I/O -// operations. streamer is the handlder to create a ClientStream and it is the responsibility of the interceptor to call it. -// This is the EXPERIMENTAL API. +// operations. streamer is the handler to create a ClientStream and it is the responsibility of the interceptor to call it. +// This is an EXPERIMENTAL API. type StreamClientInterceptor func(ctx context.Context, desc *StreamDesc, cc *ClientConn, method string, streamer Streamer, opts ...CallOption) (ClientStream, error) // UnaryServerInfo consists of various information about a unary RPC on diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/internal/internal.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/internal/internal.go index 5489143a..07083832 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/internal/internal.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/internal/internal.go @@ -1,32 +1,17 @@ /* - * Copyright 2016, Google Inc. - * All rights reserved. + * Copyright 2016 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/keepalive/keepalive.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/keepalive/keepalive.go new file mode 100644 index 00000000..f8adc7e6 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/keepalive/keepalive.go @@ -0,0 +1,65 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// Package keepalive defines configurable parameters for point-to-point healthcheck. +package keepalive + +import ( + "time" +) + +// ClientParameters is used to set keepalive parameters on the client-side. +// These configure how the client will actively probe to notice when a connection is broken +// and send pings so intermediaries will be aware of the liveness of the connection. +// Make sure these parameters are set in coordination with the keepalive policy on the server, +// as incompatible settings can result in closing of connection. +type ClientParameters struct { + // After a duration of this time if the client doesn't see any activity it pings the server to see if the transport is still alive. + Time time.Duration // The current default value is infinity. + // After having pinged for keepalive check, the client waits for a duration of Timeout and if no activity is seen even after that + // the connection is closed. + Timeout time.Duration // The current default value is 20 seconds. + // If true, client runs keepalive checks even with no active RPCs. + PermitWithoutStream bool // false by default. +} + +// ServerParameters is used to set keepalive and max-age parameters on the server-side. +type ServerParameters struct { + // MaxConnectionIdle is a duration for the amount of time after which an idle connection would be closed by sending a GoAway. + // Idleness duration is defined since the most recent time the number of outstanding RPCs became zero or the connection establishment. + MaxConnectionIdle time.Duration // The current default value is infinity. + // MaxConnectionAge is a duration for the maximum amount of time a connection may exist before it will be closed by sending a GoAway. + // A random jitter of +/-10% will be added to MaxConnectionAge to spread out connection storms. + MaxConnectionAge time.Duration // The current default value is infinity. + // MaxConnectinoAgeGrace is an additive period after MaxConnectionAge after which the connection will be forcibly closed. + MaxConnectionAgeGrace time.Duration // The current default value is infinity. + // After a duration of this time if the server doesn't see any activity it pings the client to see if the transport is still alive. + Time time.Duration // The current default value is 2 hours. + // After having pinged for keepalive check, the server waits for a duration of Timeout and if no activity is seen even after that + // the connection is closed. + Timeout time.Duration // The current default value is 20 seconds. +} + +// EnforcementPolicy is used to set keepalive enforcement policy on the server-side. +// Server will close connection with a client that violates this policy. +type EnforcementPolicy struct { + // MinTime is the minimum amount of time a client should wait before sending a keepalive ping. + MinTime time.Duration // The current default value is 5 minutes. + // If true, server expects keepalive pings even when there are no active streams(RPCs). + PermitWithoutStream bool // false by default. +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/metadata/metadata.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/metadata/metadata.go index 65dc5af5..be4f9e73 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/metadata/metadata.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/metadata/metadata.go @@ -1,91 +1,53 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ // Package metadata define the structure of the metadata supported by gRPC library. +// Please refer to https://grpc.io/docs/guides/wire.html for more information about custom-metadata. package metadata // import "google.golang.org/grpc/metadata" import ( - "encoding/base64" "fmt" "strings" "golang.org/x/net/context" ) -const ( - binHdrSuffix = "-bin" -) - -// encodeKeyValue encodes key and value qualified for transmission via gRPC. -// Transmitting binary headers violates HTTP/2 spec. -// TODO(zhaoq): Maybe check if k is ASCII also. -func encodeKeyValue(k, v string) (string, string) { - k = strings.ToLower(k) - if strings.HasSuffix(k, binHdrSuffix) { - val := base64.StdEncoding.EncodeToString([]byte(v)) - v = string(val) - } - return k, v -} - -// DecodeKeyValue returns the original key and value corresponding to the -// encoded data in k, v. -// If k is a binary header and v contains comma, v is split on comma before decoded, -// and the decoded v will be joined with comma before returned. +// DecodeKeyValue returns k, v, nil. It is deprecated and should not be used. func DecodeKeyValue(k, v string) (string, string, error) { - if !strings.HasSuffix(k, binHdrSuffix) { - return k, v, nil - } - vvs := strings.Split(v, ",") - for i, vv := range vvs { - val, err := base64.StdEncoding.DecodeString(vv) - if err != nil { - return "", "", err - } - vvs[i] = string(val) - } - return k, strings.Join(vvs, ","), nil + return k, v, nil } // MD is a mapping from metadata keys to values. Users should use the following // two convenience functions New and Pairs to generate MD. type MD map[string][]string -// New creates a MD from given key-value map. +// New creates an MD from a given key-value map. +// +// Only the following ASCII characters are allowed in keys: +// - digits: 0-9 +// - uppercase letters: A-Z (normalized to lower) +// - lowercase letters: a-z +// - special characters: -_. +// Uppercase letters are automatically converted to lowercase. func New(m map[string]string) MD { md := MD{} - for k, v := range m { - key, val := encodeKeyValue(k, v) + for k, val := range m { + key := strings.ToLower(k) md[key] = append(md[key], val) } return md @@ -93,19 +55,25 @@ func New(m map[string]string) MD { // Pairs returns an MD formed by the mapping of key, value ... // Pairs panics if len(kv) is odd. +// +// Only the following ASCII characters are allowed in keys: +// - digits: 0-9 +// - uppercase letters: A-Z (normalized to lower) +// - lowercase letters: a-z +// - special characters: -_. +// Uppercase letters are automatically converted to lowercase. func Pairs(kv ...string) MD { if len(kv)%2 == 1 { panic(fmt.Sprintf("metadata: Pairs got the odd number of input pairs for metadata: %d", len(kv))) } md := MD{} - var k string + var key string for i, s := range kv { if i%2 == 0 { - k = s + key = strings.ToLower(s) continue } - key, val := encodeKeyValue(k, s) - md[key] = append(md[key], val) + md[key] = append(md[key], s) } return md } @@ -120,9 +88,9 @@ func (md MD) Copy() MD { return Join(md) } -// Join joins any number of MDs into a single MD. +// Join joins any number of mds into a single MD. // The order of values for each key is determined by the order in which -// the MDs containing those values are presented to Join. +// the mds containing those values are presented to Join. func Join(mds ...MD) MD { out := MD{} for _, md := range mds { @@ -133,17 +101,41 @@ func Join(mds ...MD) MD { return out } -type mdKey struct{} +type mdIncomingKey struct{} +type mdOutgoingKey struct{} -// NewContext creates a new context with md attached. +// NewContext is a wrapper for NewOutgoingContext(ctx, md). Deprecated. func NewContext(ctx context.Context, md MD) context.Context { - return context.WithValue(ctx, mdKey{}, md) + return NewOutgoingContext(ctx, md) } -// FromContext returns the MD in ctx if it exists. -// The returned md should be immutable, writing to it may cause races. -// Modification should be made to the copies of the returned md. +// NewIncomingContext creates a new context with incoming md attached. +func NewIncomingContext(ctx context.Context, md MD) context.Context { + return context.WithValue(ctx, mdIncomingKey{}, md) +} + +// NewOutgoingContext creates a new context with outgoing md attached. +func NewOutgoingContext(ctx context.Context, md MD) context.Context { + return context.WithValue(ctx, mdOutgoingKey{}, md) +} + +// FromContext is a wrapper for FromIncomingContext(ctx). Deprecated. func FromContext(ctx context.Context) (md MD, ok bool) { - md, ok = ctx.Value(mdKey{}).(MD) + return FromIncomingContext(ctx) +} + +// FromIncomingContext returns the incoming metadata in ctx if it exists. The +// returned MD should not be modified. Writing to it may cause races. +// Modification should be made to copies of the returned MD. +func FromIncomingContext(ctx context.Context) (md MD, ok bool) { + md, ok = ctx.Value(mdIncomingKey{}).(MD) + return +} + +// FromOutgoingContext returns the outgoing metadata in ctx if it exists. The +// returned MD should not be modified. Writing to it may cause races. +// Modification should be made to the copies of the returned MD. +func FromOutgoingContext(ctx context.Context) (md MD, ok bool) { + md, ok = ctx.Value(mdOutgoingKey{}).(MD) return } diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/dns_resolver.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/dns_resolver.go new file mode 100644 index 00000000..efd37e30 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/dns_resolver.go @@ -0,0 +1,292 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package naming + +import ( + "errors" + "fmt" + "net" + "strconv" + "time" + + "golang.org/x/net/context" + "google.golang.org/grpc/grpclog" +) + +const ( + defaultPort = "443" + defaultFreq = time.Minute * 30 +) + +var ( + errMissingAddr = errors.New("missing address") + errWatcherClose = errors.New("watcher has been closed") +) + +// NewDNSResolverWithFreq creates a DNS Resolver that can resolve DNS names, and +// create watchers that poll the DNS server using the frequency set by freq. +func NewDNSResolverWithFreq(freq time.Duration) (Resolver, error) { + return &dnsResolver{freq: freq}, nil +} + +// NewDNSResolver creates a DNS Resolver that can resolve DNS names, and create +// watchers that poll the DNS server using the default frequency defined by defaultFreq. +func NewDNSResolver() (Resolver, error) { + return NewDNSResolverWithFreq(defaultFreq) +} + +// dnsResolver handles name resolution for names following the DNS scheme +type dnsResolver struct { + // frequency of polling the DNS server that the watchers created by this resolver will use. + freq time.Duration +} + +// formatIP returns ok = false if addr is not a valid textual representation of an IP address. +// If addr is an IPv4 address, return the addr and ok = true. +// If addr is an IPv6 address, return the addr enclosed in square brackets and ok = true. +func formatIP(addr string) (addrIP string, ok bool) { + ip := net.ParseIP(addr) + if ip == nil { + return "", false + } + if ip.To4() != nil { + return addr, true + } + return "[" + addr + "]", true +} + +// parseTarget takes the user input target string, returns formatted host and port info. +// If target doesn't specify a port, set the port to be the defaultPort. +// If target is in IPv6 format and host-name is enclosed in sqarue brackets, brackets +// are strippd when setting the host. +// examples: +// target: "www.google.com" returns host: "www.google.com", port: "443" +// target: "ipv4-host:80" returns host: "ipv4-host", port: "80" +// target: "[ipv6-host]" returns host: "ipv6-host", port: "443" +// target: ":80" returns host: "localhost", port: "80" +// target: ":" returns host: "localhost", port: "443" +func parseTarget(target string) (host, port string, err error) { + if target == "" { + return "", "", errMissingAddr + } + + if ip := net.ParseIP(target); ip != nil { + // target is an IPv4 or IPv6(without brackets) address + return target, defaultPort, nil + } + if host, port, err := net.SplitHostPort(target); err == nil { + // target has port, i.e ipv4-host:port, [ipv6-host]:port, host-name:port + if host == "" { + // Keep consistent with net.Dial(): If the host is empty, as in ":80", the local system is assumed. + host = "localhost" + } + if port == "" { + // If the port field is empty(target ends with colon), e.g. "[::1]:", defaultPort is used. + port = defaultPort + } + return host, port, nil + } + if host, port, err := net.SplitHostPort(target + ":" + defaultPort); err == nil { + // target doesn't have port + return host, port, nil + } + return "", "", fmt.Errorf("invalid target address %v", target) +} + +// Resolve creates a watcher that watches the name resolution of the target. +func (r *dnsResolver) Resolve(target string) (Watcher, error) { + host, port, err := parseTarget(target) + if err != nil { + return nil, err + } + + if net.ParseIP(host) != nil { + ipWatcher := &ipWatcher{ + updateChan: make(chan *Update, 1), + } + host, _ = formatIP(host) + ipWatcher.updateChan <- &Update{Op: Add, Addr: host + ":" + port} + return ipWatcher, nil + } + + ctx, cancel := context.WithCancel(context.Background()) + return &dnsWatcher{ + r: r, + host: host, + port: port, + ctx: ctx, + cancel: cancel, + t: time.NewTimer(0), + }, nil +} + +// dnsWatcher watches for the name resolution update for a specific target +type dnsWatcher struct { + r *dnsResolver + host string + port string + // The latest resolved address list + curAddrs []*Update + ctx context.Context + cancel context.CancelFunc + t *time.Timer +} + +// ipWatcher watches for the name resolution update for an IP address. +type ipWatcher struct { + updateChan chan *Update +} + +// Next returns the adrress resolution Update for the target. For IP address, +// the resolution is itself, thus polling name server is unncessary. Therefore, +// Next() will return an Update the first time it is called, and will be blocked +// for all following calls as no Update exisits until watcher is closed. +func (i *ipWatcher) Next() ([]*Update, error) { + u, ok := <-i.updateChan + if !ok { + return nil, errWatcherClose + } + return []*Update{u}, nil +} + +// Close closes the ipWatcher. +func (i *ipWatcher) Close() { + close(i.updateChan) +} + +// AddressType indicates the address type returned by name resolution. +type AddressType uint8 + +const ( + // Backend indicates the server is a backend server. + Backend AddressType = iota + // GRPCLB indicates the server is a grpclb load balancer. + GRPCLB +) + +// AddrMetadataGRPCLB contains the information the name resolver for grpclb should provide. The +// name resolver used by the grpclb balancer is required to provide this type of metadata in +// its address updates. +type AddrMetadataGRPCLB struct { + // AddrType is the type of server (grpc load balancer or backend). + AddrType AddressType + // ServerName is the name of the grpc load balancer. Used for authentication. + ServerName string +} + +// compileUpdate compares the old resolved addresses and newly resolved addresses, +// and generates an update list +func (w *dnsWatcher) compileUpdate(newAddrs []*Update) []*Update { + update := make(map[Update]bool) + for _, u := range newAddrs { + update[*u] = true + } + for _, u := range w.curAddrs { + if _, ok := update[*u]; ok { + delete(update, *u) + continue + } + update[Update{Addr: u.Addr, Op: Delete, Metadata: u.Metadata}] = true + } + res := make([]*Update, 0, len(update)) + for k := range update { + tmp := k + res = append(res, &tmp) + } + return res +} + +func (w *dnsWatcher) lookupSRV() []*Update { + var newAddrs []*Update + _, srvs, err := lookupSRV(w.ctx, "grpclb", "tcp", w.host) + if err != nil { + grpclog.Infof("grpc: failed dns SRV record lookup due to %v.\n", err) + return nil + } + for _, s := range srvs { + lbAddrs, err := lookupHost(w.ctx, s.Target) + if err != nil { + grpclog.Warningf("grpc: failed load banlacer address dns lookup due to %v.\n", err) + continue + } + for _, a := range lbAddrs { + a, ok := formatIP(a) + if !ok { + grpclog.Errorf("grpc: failed IP parsing due to %v.\n", err) + continue + } + newAddrs = append(newAddrs, &Update{Addr: a + ":" + strconv.Itoa(int(s.Port)), + Metadata: AddrMetadataGRPCLB{AddrType: GRPCLB, ServerName: s.Target}}) + } + } + return newAddrs +} + +func (w *dnsWatcher) lookupHost() []*Update { + var newAddrs []*Update + addrs, err := lookupHost(w.ctx, w.host) + if err != nil { + grpclog.Warningf("grpc: failed dns A record lookup due to %v.\n", err) + return nil + } + for _, a := range addrs { + a, ok := formatIP(a) + if !ok { + grpclog.Errorf("grpc: failed IP parsing due to %v.\n", err) + continue + } + newAddrs = append(newAddrs, &Update{Addr: a + ":" + w.port}) + } + return newAddrs +} + +func (w *dnsWatcher) lookup() []*Update { + newAddrs := w.lookupSRV() + if newAddrs == nil { + // If failed to get any balancer address (either no corresponding SRV for the + // target, or caused by failure during resolution/parsing of the balancer target), + // return any A record info available. + newAddrs = w.lookupHost() + } + result := w.compileUpdate(newAddrs) + w.curAddrs = newAddrs + return result +} + +// Next returns the resolved address update(delta) for the target. If there's no +// change, it will sleep for 30 mins and try to resolve again after that. +func (w *dnsWatcher) Next() ([]*Update, error) { + for { + select { + case <-w.ctx.Done(): + return nil, errWatcherClose + case <-w.t.C: + } + result := w.lookup() + // Next lookup should happen after an interval defined by w.r.freq. + w.t.Reset(w.r.freq) + if len(result) > 0 { + return result, nil + } + } +} + +func (w *dnsWatcher) Close() { + w.cancel() +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/go17.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/go17.go new file mode 100644 index 00000000..a537b08c --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/go17.go @@ -0,0 +1,34 @@ +// +build go1.6, !go1.8 + +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package naming + +import ( + "net" + + "golang.org/x/net/context" +) + +var ( + lookupHost = func(ctx context.Context, host string) ([]string, error) { return net.LookupHost(host) } + lookupSRV = func(ctx context.Context, service, proto, name string) (string, []*net.SRV, error) { + return net.LookupSRV(service, proto, name) + } +) diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/go18.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/go18.go new file mode 100644 index 00000000..b5a0f842 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/go18.go @@ -0,0 +1,28 @@ +// +build go1.8 + +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package naming + +import "net" + +var ( + lookupHost = net.DefaultResolver.LookupHost + lookupSRV = net.DefaultResolver.LookupSRV +) diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/naming.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/naming.go index c2e0871e..1af7e32f 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/naming.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/naming/naming.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/peer/peer.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/peer/peer.go index bfa6205b..317b8b9d 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/peer/peer.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/peer/peer.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -42,7 +27,8 @@ import ( "google.golang.org/grpc/credentials" ) -// Peer contains the information of the peer for an RPC. +// Peer contains the information of the peer for an RPC, such as the address +// and authentication information. type Peer struct { // Addr is the peer address. Addr net.Addr diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/proxy.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/proxy.go new file mode 100644 index 00000000..2d40236e --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/proxy.go @@ -0,0 +1,130 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package grpc + +import ( + "bufio" + "errors" + "fmt" + "io" + "net" + "net/http" + "net/http/httputil" + "net/url" + + "golang.org/x/net/context" +) + +var ( + // errDisabled indicates that proxy is disabled for the address. + errDisabled = errors.New("proxy is disabled for the address") + // The following variable will be overwritten in the tests. + httpProxyFromEnvironment = http.ProxyFromEnvironment +) + +func mapAddress(ctx context.Context, address string) (string, error) { + req := &http.Request{ + URL: &url.URL{ + Scheme: "https", + Host: address, + }, + } + url, err := httpProxyFromEnvironment(req) + if err != nil { + return "", err + } + if url == nil { + return "", errDisabled + } + return url.Host, nil +} + +// To read a response from a net.Conn, http.ReadResponse() takes a bufio.Reader. +// It's possible that this reader reads more than what's need for the response and stores +// those bytes in the buffer. +// bufConn wraps the original net.Conn and the bufio.Reader to make sure we don't lose the +// bytes in the buffer. +type bufConn struct { + net.Conn + r io.Reader +} + +func (c *bufConn) Read(b []byte) (int, error) { + return c.r.Read(b) +} + +func doHTTPConnectHandshake(ctx context.Context, conn net.Conn, addr string) (_ net.Conn, err error) { + defer func() { + if err != nil { + conn.Close() + } + }() + + req := (&http.Request{ + Method: http.MethodConnect, + URL: &url.URL{Host: addr}, + Header: map[string][]string{"User-Agent": {grpcUA}}, + }) + + if err := sendHTTPRequest(ctx, req, conn); err != nil { + return nil, fmt.Errorf("failed to write the HTTP request: %v", err) + } + + r := bufio.NewReader(conn) + resp, err := http.ReadResponse(r, req) + if err != nil { + return nil, fmt.Errorf("reading server HTTP response: %v", err) + } + defer resp.Body.Close() + if resp.StatusCode != http.StatusOK { + dump, err := httputil.DumpResponse(resp, true) + if err != nil { + return nil, fmt.Errorf("failed to do connect handshake, status code: %s", resp.Status) + } + return nil, fmt.Errorf("failed to do connect handshake, response: %q", dump) + } + + return &bufConn{Conn: conn, r: r}, nil +} + +// newProxyDialer returns a dialer that connects to proxy first if necessary. +// The returned dialer checks if a proxy is necessary, dial to the proxy with the +// provided dialer, does HTTP CONNECT handshake and returns the connection. +func newProxyDialer(dialer func(context.Context, string) (net.Conn, error)) func(context.Context, string) (net.Conn, error) { + return func(ctx context.Context, addr string) (conn net.Conn, err error) { + var skipHandshake bool + newAddr, err := mapAddress(ctx, addr) + if err != nil { + if err != errDisabled { + return nil, err + } + skipHandshake = true + newAddr = addr + } + + conn, err = dialer(ctx, newAddr) + if err != nil { + return + } + if !skipHandshake { + conn, err = doHTTPConnectHandshake(ctx, conn, addr) + } + return + } +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/rpc_util.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/rpc_util.go index 2619d396..9b9d3883 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/rpc_util.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/rpc_util.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -37,47 +22,22 @@ import ( "bytes" "compress/gzip" "encoding/binary" - "fmt" "io" "io/ioutil" "math" - "os" + "sync" "time" - "github.com/golang/protobuf/proto" "golang.org/x/net/context" "google.golang.org/grpc/codes" + "google.golang.org/grpc/credentials" "google.golang.org/grpc/metadata" + "google.golang.org/grpc/peer" "google.golang.org/grpc/stats" + "google.golang.org/grpc/status" "google.golang.org/grpc/transport" ) -// Codec defines the interface gRPC uses to encode and decode messages. -type Codec interface { - // Marshal returns the wire format of v. - Marshal(v interface{}) ([]byte, error) - // Unmarshal parses the wire format into v. - Unmarshal(data []byte, v interface{}) error - // String returns the name of the Codec implementation. The returned - // string will be used as part of content type in transmission. - String() string -} - -// protoCodec is a Codec implementation with protobuf. It is the default codec for gRPC. -type protoCodec struct{} - -func (protoCodec) Marshal(v interface{}) ([]byte, error) { - return proto.Marshal(v.(proto.Message)) -} - -func (protoCodec) Unmarshal(data []byte, v interface{}) error { - return proto.Unmarshal(data, v.(proto.Message)) -} - -func (protoCodec) String() string { - return "proto" -} - // Compressor defines the interface gRPC uses to compress a message. type Compressor interface { // Do compresses p into w. @@ -86,16 +46,24 @@ type Compressor interface { Type() string } -// NewGZIPCompressor creates a Compressor based on GZIP. -func NewGZIPCompressor() Compressor { - return &gzipCompressor{} +type gzipCompressor struct { + pool sync.Pool } -type gzipCompressor struct { +// NewGZIPCompressor creates a Compressor based on GZIP. +func NewGZIPCompressor() Compressor { + return &gzipCompressor{ + pool: sync.Pool{ + New: func() interface{} { + return gzip.NewWriter(ioutil.Discard) + }, + }, + } } func (c *gzipCompressor) Do(w io.Writer, p []byte) error { - z := gzip.NewWriter(w) + z := c.pool.Get().(*gzip.Writer) + z.Reset(w) if _, err := z.Write(p); err != nil { return err } @@ -115,6 +83,7 @@ type Decompressor interface { } type gzipDecompressor struct { + pool sync.Pool } // NewGZIPDecompressor creates a Decompressor based on GZIP. @@ -123,11 +92,26 @@ func NewGZIPDecompressor() Decompressor { } func (d *gzipDecompressor) Do(r io.Reader) ([]byte, error) { - z, err := gzip.NewReader(r) - if err != nil { - return nil, err + var z *gzip.Reader + switch maybeZ := d.pool.Get().(type) { + case nil: + newZ, err := gzip.NewReader(r) + if err != nil { + return nil, err + } + z = newZ + case *gzip.Reader: + z = maybeZ + if err := z.Reset(r); err != nil { + d.pool.Put(z) + return nil, err + } } - defer z.Close() + + defer func() { + z.Close() + d.pool.Put(z) + }() return ioutil.ReadAll(z) } @@ -137,10 +121,14 @@ func (d *gzipDecompressor) Type() string { // callInfo contains all related configuration and information about an RPC. type callInfo struct { - failFast bool - headerMD metadata.MD - trailerMD metadata.MD - traceInfo traceInfo // in trace.go + failFast bool + headerMD metadata.MD + trailerMD metadata.MD + peer *peer.Peer + traceInfo traceInfo // in trace.go + maxReceiveMessageSize *int + maxSendMessageSize *int + creds credentials.PerRPCCredentials } var defaultCallInfo = callInfo{failFast: true} @@ -157,6 +145,14 @@ type CallOption interface { after(*callInfo) } +// EmptyCallOption does not alter the Call configuration. +// It can be embedded in another structure to carry satellite data for use +// by interceptors. +type EmptyCallOption struct{} + +func (EmptyCallOption) before(*callInfo) error { return nil } +func (EmptyCallOption) after(*callInfo) {} + type beforeCall func(c *callInfo) error func (o beforeCall) before(c *callInfo) error { return o(c) } @@ -183,12 +179,23 @@ func Trailer(md *metadata.MD) CallOption { }) } +// Peer returns a CallOption that retrieves peer information for a +// unary RPC. +func Peer(peer *peer.Peer) CallOption { + return afterCall(func(c *callInfo) { + if c.peer != nil { + *peer = *c.peer + } + }) +} + // FailFast configures the action to take when an RPC is attempted on broken // connections or unreachable servers. If failfast is true, the RPC will fail // immediately. Otherwise, the RPC client will block the call until a // connection is available (or the call is canceled or times out) and will retry // the call if it fails due to a transient error. Please refer to -// https://github.com/grpc/grpc/blob/master/doc/fail_fast.md +// https://github.com/grpc/grpc/blob/master/doc/wait-for-ready.md. +// Note: failFast is default to true. func FailFast(failFast bool) CallOption { return beforeCall(func(c *callInfo) error { c.failFast = failFast @@ -196,6 +203,31 @@ func FailFast(failFast bool) CallOption { }) } +// MaxCallRecvMsgSize returns a CallOption which sets the maximum message size the client can receive. +func MaxCallRecvMsgSize(s int) CallOption { + return beforeCall(func(o *callInfo) error { + o.maxReceiveMessageSize = &s + return nil + }) +} + +// MaxCallSendMsgSize returns a CallOption which sets the maximum message size the client can send. +func MaxCallSendMsgSize(s int) CallOption { + return beforeCall(func(o *callInfo) error { + o.maxSendMessageSize = &s + return nil + }) +} + +// PerRPCCredentials returns a CallOption that sets credentials.PerRPCCredentials +// for a call. +func PerRPCCredentials(creds credentials.PerRPCCredentials) CallOption { + return beforeCall(func(c *callInfo) error { + c.creds = creds + return nil + }) +} + // The format of the payload: compressed or not? type payloadFormat uint8 @@ -212,7 +244,7 @@ type parser struct { r io.Reader // The header of a gRPC message. Find more detail - // at http://www.grpc.io/docs/guides/wire.html. + // at https://grpc.io/docs/guides/wire.html. header [5]byte } @@ -229,8 +261,8 @@ type parser struct { // No other error values or types must be returned, which also means // that the underlying io.Reader must not return an incompatible // error. -func (p *parser) recvMsg(maxMsgSize int) (pf payloadFormat, msg []byte, err error) { - if _, err := io.ReadFull(p.r, p.header[:]); err != nil { +func (p *parser) recvMsg(maxReceiveMessageSize int) (pf payloadFormat, msg []byte, err error) { + if _, err := p.r.Read(p.header[:]); err != nil { return 0, nil, err } @@ -240,13 +272,13 @@ func (p *parser) recvMsg(maxMsgSize int) (pf payloadFormat, msg []byte, err erro if length == 0 { return pf, nil, nil } - if length > uint32(maxMsgSize) { - return 0, nil, Errorf(codes.Internal, "grpc: received message length %d exceeding the max size %d", length, maxMsgSize) + if length > uint32(maxReceiveMessageSize) { + return 0, nil, Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", length, maxReceiveMessageSize) } // TODO(bradfitz,zhaoq): garbage. reuse buffer after proto decoding instead // of making it for each message: msg = make([]byte, int(length)) - if _, err := io.ReadFull(p.r, msg); err != nil { + if _, err := p.r.Read(msg); err != nil { if err == io.EOF { err = io.ErrUnexpectedEOF } @@ -267,7 +299,7 @@ func encode(c Codec, msg interface{}, cp Compressor, cbuf *bytes.Buffer, outPayl // TODO(zhaoq): optimize to reduce memory alloc and copying. b, err = c.Marshal(msg) if err != nil { - return nil, err + return nil, Errorf(codes.Internal, "grpc: error while marshaling: %v", err.Error()) } if outPayload != nil { outPayload.Payload = msg @@ -277,14 +309,14 @@ func encode(c Codec, msg interface{}, cp Compressor, cbuf *bytes.Buffer, outPayl } if cp != nil { if err := cp.Do(cbuf, b); err != nil { - return nil, err + return nil, Errorf(codes.Internal, "grpc: error while compressing: %v", err.Error()) } b = cbuf.Bytes() } length = uint(len(b)) } if length > math.MaxUint32 { - return nil, Errorf(codes.InvalidArgument, "grpc: message too large (%d bytes)", length) + return nil, Errorf(codes.ResourceExhausted, "grpc: message too large (%d bytes)", length) } const ( @@ -325,8 +357,8 @@ func checkRecvPayload(pf payloadFormat, recvCompress string, dc Decompressor) er return nil } -func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{}, maxMsgSize int, inPayload *stats.InPayload) error { - pf, d, err := p.recvMsg(maxMsgSize) +func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{}, maxReceiveMessageSize int, inPayload *stats.InPayload) error { + pf, d, err := p.recvMsg(maxReceiveMessageSize) if err != nil { return err } @@ -342,10 +374,10 @@ func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{ return Errorf(codes.Internal, "grpc: failed to decompress the received message %v", err) } } - if len(d) > maxMsgSize { + if len(d) > maxReceiveMessageSize { // TODO: Revisit the error code. Currently keep it consistent with java // implementation. - return Errorf(codes.Internal, "grpc: received a message of %d bytes exceeding %d limit", len(d), maxMsgSize) + return Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", len(d), maxReceiveMessageSize) } if err := c.Unmarshal(d, m); err != nil { return Errorf(codes.Internal, "grpc: failed to unmarshal the received message %v", err) @@ -360,116 +392,57 @@ func recv(p *parser, c Codec, s *transport.Stream, dc Decompressor, m interface{ return nil } -// rpcError defines the status from an RPC. -type rpcError struct { - code codes.Code - desc string +type rpcInfo struct { + bytesSent bool + bytesReceived bool +} + +type rpcInfoContextKey struct{} + +func newContextWithRPCInfo(ctx context.Context) context.Context { + return context.WithValue(ctx, rpcInfoContextKey{}, &rpcInfo{}) } -func (e *rpcError) Error() string { - return fmt.Sprintf("rpc error: code = %d desc = %s", e.code, e.desc) +func rpcInfoFromContext(ctx context.Context) (s *rpcInfo, ok bool) { + s, ok = ctx.Value(rpcInfoContextKey{}).(*rpcInfo) + return +} + +func updateRPCInfoInContext(ctx context.Context, s rpcInfo) { + if ss, ok := rpcInfoFromContext(ctx); ok { + *ss = s + } + return } // Code returns the error code for err if it was produced by the rpc system. // Otherwise, it returns codes.Unknown. +// +// Deprecated; use status.FromError and Code method instead. func Code(err error) codes.Code { - if err == nil { - return codes.OK - } - if e, ok := err.(*rpcError); ok { - return e.code + if s, ok := status.FromError(err); ok { + return s.Code() } return codes.Unknown } // ErrorDesc returns the error description of err if it was produced by the rpc system. // Otherwise, it returns err.Error() or empty string when err is nil. +// +// Deprecated; use status.FromError and Message method instead. func ErrorDesc(err error) string { - if err == nil { - return "" - } - if e, ok := err.(*rpcError); ok { - return e.desc + if s, ok := status.FromError(err); ok { + return s.Message() } return err.Error() } // Errorf returns an error containing an error code and a description; // Errorf returns nil if c is OK. +// +// Deprecated; use status.Errorf instead. func Errorf(c codes.Code, format string, a ...interface{}) error { - if c == codes.OK { - return nil - } - return &rpcError{ - code: c, - desc: fmt.Sprintf(format, a...), - } -} - -// toRPCErr converts an error into a rpcError. -func toRPCErr(err error) error { - switch e := err.(type) { - case *rpcError: - return err - case transport.StreamError: - return &rpcError{ - code: e.Code, - desc: e.Desc, - } - case transport.ConnectionError: - return &rpcError{ - code: codes.Internal, - desc: e.Desc, - } - default: - switch err { - case context.DeadlineExceeded: - return &rpcError{ - code: codes.DeadlineExceeded, - desc: err.Error(), - } - case context.Canceled: - return &rpcError{ - code: codes.Canceled, - desc: err.Error(), - } - case ErrClientConnClosing: - return &rpcError{ - code: codes.FailedPrecondition, - desc: err.Error(), - } - } - - } - return Errorf(codes.Unknown, "%v", err) -} - -// convertCode converts a standard Go error into its canonical code. Note that -// this is only used to translate the error returned by the server applications. -func convertCode(err error) codes.Code { - switch err { - case nil: - return codes.OK - case io.EOF: - return codes.OutOfRange - case io.ErrClosedPipe, io.ErrNoProgress, io.ErrShortBuffer, io.ErrShortWrite, io.ErrUnexpectedEOF: - return codes.FailedPrecondition - case os.ErrInvalid: - return codes.InvalidArgument - case context.Canceled: - return codes.Canceled - case context.DeadlineExceeded: - return codes.DeadlineExceeded - } - switch { - case os.IsExist(err): - return codes.AlreadyExists - case os.IsNotExist(err): - return codes.NotFound - case os.IsPermission(err): - return codes.PermissionDenied - } - return codes.Unknown + return status.Errorf(c, format, a...) } // MethodConfig defines the configuration recommended by the service providers for a @@ -479,24 +452,22 @@ type MethodConfig struct { // WaitForReady indicates whether RPCs sent to this method should wait until // the connection is ready by default (!failfast). The value specified via the // gRPC client API will override the value set here. - WaitForReady bool + WaitForReady *bool // Timeout is the default timeout for RPCs sent to this method. The actual // deadline used will be the minimum of the value specified here and the value // set by the application via the gRPC client API. If either one is not set, // then the other will be used. If neither is set, then the RPC has no deadline. - Timeout time.Duration + Timeout *time.Duration // MaxReqSize is the maximum allowed payload size for an individual request in a - // stream (client->server) in bytes. The size which is measured is the serialized, - // uncompressed payload in bytes. The actual value used is the minumum of the value - // specified here and the value set by the application via the gRPC client API. If - // either one is not set, then the other will be used. If neither is set, then the - // built-in default is used. - // TODO: support this. - MaxReqSize uint64 + // stream (client->server) in bytes. The size which is measured is the serialized + // payload after per-message compression (but before stream compression) in bytes. + // The actual value used is the minumum of the value specified here and the value set + // by the application via the gRPC client API. If either one is not set, then the other + // will be used. If neither is set, then the built-in default is used. + MaxReqSize *int // MaxRespSize is the maximum allowed payload size for an individual response in a // stream (server->client) in bytes. - // TODO: support this. - MaxRespSize uint64 + MaxRespSize *int } // ServiceConfig is provided by the service provider and contains parameters for how @@ -507,9 +478,38 @@ type ServiceConfig struct { // via grpc.WithBalancer will override this. LB Balancer // Methods contains a map for the methods in this service. + // If there is an exact match for a method (i.e. /service/method) in the map, use the corresponding MethodConfig. + // If there's no exact match, look for the default config for the service (/service/) and use the corresponding MethodConfig if it exists. + // Otherwise, the method has no MethodConfig to use. Methods map[string]MethodConfig } +func min(a, b *int) *int { + if *a < *b { + return a + } + return b +} + +func getMaxSize(mcMax, doptMax *int, defaultVal int) *int { + if mcMax == nil && doptMax == nil { + return &defaultVal + } + if mcMax != nil && doptMax != nil { + return min(mcMax, doptMax) + } + if mcMax != nil { + return mcMax + } + return doptMax +} + +// SupportPackageIsVersion3 is referenced from generated protocol buffer files. +// The latest support package version is 4. +// SupportPackageIsVersion3 is kept for compability. It will be removed in the +// next support package version update. +const SupportPackageIsVersion3 = true + // SupportPackageIsVersion4 is referenced from generated protocol buffer files // to assert that that code is compatible with this version of the grpc package. // @@ -517,3 +517,8 @@ type ServiceConfig struct { // requires a synchronised update of grpc-go and protoc-gen-go. This constant // should not be referenced from any other code. const SupportPackageIsVersion4 = true + +// Version is the current grpc version. +const Version = "1.6.0-dev" + +const grpcUA = "grpc-go/" + Version diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/server.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/server.go index 985226d6..42733e22 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/server.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/server.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -53,12 +38,19 @@ import ( "google.golang.org/grpc/credentials" "google.golang.org/grpc/grpclog" "google.golang.org/grpc/internal" + "google.golang.org/grpc/keepalive" "google.golang.org/grpc/metadata" "google.golang.org/grpc/stats" + "google.golang.org/grpc/status" "google.golang.org/grpc/tap" "google.golang.org/grpc/transport" ) +const ( + defaultServerMaxReceiveMessageSize = 1024 * 1024 * 4 + defaultServerMaxSendMessageSize = 1024 * 1024 * 4 +) + type methodHandler func(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor UnaryServerInterceptor) (interface{}, error) // MethodDesc represents an RPC service's method specification. @@ -94,6 +86,7 @@ type Server struct { mu sync.Mutex // guards following lis map[net.Listener]bool conns map[io.Closer]bool + serve bool drain bool ctx context.Context cancel context.CancelFunc @@ -105,24 +98,63 @@ type Server struct { } type options struct { - creds credentials.TransportCredentials - codec Codec - cp Compressor - dc Decompressor - maxMsgSize int - unaryInt UnaryServerInterceptor - streamInt StreamServerInterceptor - inTapHandle tap.ServerInHandle - statsHandler stats.Handler - maxConcurrentStreams uint32 - useHandlerImpl bool // use http.Handler-based server + creds credentials.TransportCredentials + codec Codec + cp Compressor + dc Decompressor + unaryInt UnaryServerInterceptor + streamInt StreamServerInterceptor + inTapHandle tap.ServerInHandle + statsHandler stats.Handler + maxConcurrentStreams uint32 + maxReceiveMessageSize int + maxSendMessageSize int + useHandlerImpl bool // use http.Handler-based server + unknownStreamDesc *StreamDesc + keepaliveParams keepalive.ServerParameters + keepalivePolicy keepalive.EnforcementPolicy + initialWindowSize int32 + initialConnWindowSize int32 } -var defaultMaxMsgSize = 1024 * 1024 * 4 // use 4MB as the default message size limit +var defaultServerOptions = options{ + maxReceiveMessageSize: defaultServerMaxReceiveMessageSize, + maxSendMessageSize: defaultServerMaxSendMessageSize, +} -// A ServerOption sets options. +// A ServerOption sets options such as credentials, codec and keepalive parameters, etc. type ServerOption func(*options) +// InitialWindowSize returns a ServerOption that sets window size for stream. +// The lower bound for window size is 64K and any value smaller than that will be ignored. +func InitialWindowSize(s int32) ServerOption { + return func(o *options) { + o.initialWindowSize = s + } +} + +// InitialConnWindowSize returns a ServerOption that sets window size for a connection. +// The lower bound for window size is 64K and any value smaller than that will be ignored. +func InitialConnWindowSize(s int32) ServerOption { + return func(o *options) { + o.initialConnWindowSize = s + } +} + +// KeepaliveParams returns a ServerOption that sets keepalive and max-age parameters for the server. +func KeepaliveParams(kp keepalive.ServerParameters) ServerOption { + return func(o *options) { + o.keepaliveParams = kp + } +} + +// KeepaliveEnforcementPolicy returns a ServerOption that sets keepalive enforcement policy for the server. +func KeepaliveEnforcementPolicy(kep keepalive.EnforcementPolicy) ServerOption { + return func(o *options) { + o.keepalivePolicy = kep + } +} + // CustomCodec returns a ServerOption that sets a codec for message marshaling and unmarshaling. func CustomCodec(codec Codec) ServerOption { return func(o *options) { @@ -144,11 +176,25 @@ func RPCDecompressor(dc Decompressor) ServerOption { } } -// MaxMsgSize returns a ServerOption to set the max message size in bytes for inbound mesages. -// If this is not set, gRPC uses the default 4MB. +// MaxMsgSize returns a ServerOption to set the max message size in bytes the server can receive. +// If this is not set, gRPC uses the default limit. Deprecated: use MaxRecvMsgSize instead. func MaxMsgSize(m int) ServerOption { + return MaxRecvMsgSize(m) +} + +// MaxRecvMsgSize returns a ServerOption to set the max message size in bytes the server can receive. +// If this is not set, gRPC uses the default 4MB. +func MaxRecvMsgSize(m int) ServerOption { return func(o *options) { - o.maxMsgSize = m + o.maxReceiveMessageSize = m + } +} + +// MaxSendMsgSize returns a ServerOption to set the max message size in bytes the server can send. +// If this is not set, gRPC uses the default 4MB. +func MaxSendMsgSize(m int) ServerOption { + return func(o *options) { + o.maxSendMessageSize = m } } @@ -173,7 +219,7 @@ func Creds(c credentials.TransportCredentials) ServerOption { func UnaryInterceptor(i UnaryServerInterceptor) ServerOption { return func(o *options) { if o.unaryInt != nil { - panic("The unary server interceptor has been set.") + panic("The unary server interceptor was already set and may not be reset.") } o.unaryInt = i } @@ -184,7 +230,7 @@ func UnaryInterceptor(i UnaryServerInterceptor) ServerOption { func StreamInterceptor(i StreamServerInterceptor) ServerOption { return func(o *options) { if o.streamInt != nil { - panic("The stream server interceptor has been set.") + panic("The stream server interceptor was already set and may not be reset.") } o.streamInt = i } @@ -195,7 +241,7 @@ func StreamInterceptor(i StreamServerInterceptor) ServerOption { func InTapHandle(h tap.ServerInHandle) ServerOption { return func(o *options) { if o.inTapHandle != nil { - panic("The tap handle has been set.") + panic("The tap handle was already set and may not be reset.") } o.inTapHandle = h } @@ -208,11 +254,28 @@ func StatsHandler(h stats.Handler) ServerOption { } } +// UnknownServiceHandler returns a ServerOption that allows for adding a custom +// unknown service handler. The provided method is a bidi-streaming RPC service +// handler that will be invoked instead of returning the "unimplemented" gRPC +// error whenever a request is received for an unregistered service or method. +// The handling function has full access to the Context of the request and the +// stream, and the invocation passes through interceptors. +func UnknownServiceHandler(streamHandler StreamHandler) ServerOption { + return func(o *options) { + o.unknownStreamDesc = &StreamDesc{ + StreamName: "unknown_service_handler", + Handler: streamHandler, + // We need to assume that the users of the streamHandler will want to use both. + ClientStreams: true, + ServerStreams: true, + } + } +} + // NewServer creates a gRPC server which has no service registered and has not // started to accept requests yet. func NewServer(opt ...ServerOption) *Server { - var opts options - opts.maxMsgSize = defaultMaxMsgSize + opts := defaultServerOptions for _, o := range opt { o(&opts) } @@ -251,8 +314,8 @@ func (s *Server) errorf(format string, a ...interface{}) { } } -// RegisterService register a service and its implementation to the gRPC -// server. Called from the IDL generated code. This must be called before +// RegisterService registers a service and its implementation to the gRPC +// server. It is called from the IDL generated code. This must be called before // invoking Serve. func (s *Server) RegisterService(sd *ServiceDesc, ss interface{}) { ht := reflect.TypeOf(sd.HandlerType).Elem() @@ -267,6 +330,9 @@ func (s *Server) register(sd *ServiceDesc, ss interface{}) { s.mu.Lock() defer s.mu.Unlock() s.printf("RegisterService(%q)", sd.ServiceName) + if s.serve { + grpclog.Fatalf("grpc: Server.RegisterService after Server.Serve for %q", sd.ServiceName) + } if _, ok := s.m[sd.ServiceName]; ok { grpclog.Fatalf("grpc: Server.RegisterService found duplicate service registration for %q", sd.ServiceName) } @@ -297,7 +363,7 @@ type MethodInfo struct { IsServerStream bool } -// ServiceInfo contains unary RPC method info, streaming RPC methid info and metadata for a service. +// ServiceInfo contains unary RPC method info, streaming RPC method info and metadata for a service. type ServiceInfo struct { Methods []MethodInfo // Metadata is the metadata specified in ServiceDesc when registering service. @@ -355,6 +421,7 @@ func (s *Server) useTransportAuthenticator(rawConn net.Conn) (net.Conn, credenti func (s *Server) Serve(lis net.Listener) error { s.mu.Lock() s.printf("serving") + s.serve = true if s.lis == nil { s.mu.Unlock() lis.Close() @@ -390,10 +457,12 @@ func (s *Server) Serve(lis net.Listener) error { s.mu.Lock() s.printf("Accept error: %v; retrying in %v", err, tempDelay) s.mu.Unlock() + timer := time.NewTimer(tempDelay) select { - case <-time.After(tempDelay): + case <-timer.C: case <-s.ctx.Done(): } + timer.Stop() continue } s.mu.Lock() @@ -416,7 +485,7 @@ func (s *Server) handleRawConn(rawConn net.Conn) { s.mu.Lock() s.errorf("ServerHandshake(%q) failed: %v", rawConn.RemoteAddr(), err) s.mu.Unlock() - grpclog.Printf("grpc: Server.Serve failed to complete security handshake from %q: %v", rawConn.RemoteAddr(), err) + grpclog.Warningf("grpc: Server.Serve failed to complete security handshake from %q: %v", rawConn.RemoteAddr(), err) // If serverHandShake returns ErrConnDispatched, keep rawConn open. if err != credentials.ErrConnDispatched { rawConn.Close() @@ -446,10 +515,14 @@ func (s *Server) handleRawConn(rawConn net.Conn) { // transport.NewServerTransport). func (s *Server) serveHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) { config := &transport.ServerConfig{ - MaxStreams: s.opts.maxConcurrentStreams, - AuthInfo: authInfo, - InTapHandle: s.opts.inTapHandle, - StatsHandler: s.opts.statsHandler, + MaxStreams: s.opts.maxConcurrentStreams, + AuthInfo: authInfo, + InTapHandle: s.opts.inTapHandle, + StatsHandler: s.opts.statsHandler, + KeepaliveParams: s.opts.keepaliveParams, + KeepalivePolicy: s.opts.keepalivePolicy, + InitialWindowSize: s.opts.initialWindowSize, + InitialConnWindowSize: s.opts.initialConnWindowSize, } st, err := transport.NewServerTransport("http2", c, config) if err != nil { @@ -457,7 +530,7 @@ func (s *Server) serveHTTP2Transport(c net.Conn, authInfo credentials.AuthInfo) s.errorf("NewServerTransport(%q) failed: %v", c.RemoteAddr(), err) s.mu.Unlock() c.Close() - grpclog.Println("grpc: Server.Serve failed to create ServerTransport: ", err) + grpclog.Warningln("grpc: Server.Serve failed to create ServerTransport: ", err) return } if !s.addConn(st) { @@ -515,6 +588,30 @@ func (s *Server) serveUsingHandler(conn net.Conn) { }) } +// ServeHTTP implements the Go standard library's http.Handler +// interface by responding to the gRPC request r, by looking up +// the requested gRPC method in the gRPC server s. +// +// The provided HTTP request must have arrived on an HTTP/2 +// connection. When using the Go standard library's server, +// practically this means that the Request must also have arrived +// over TLS. +// +// To share one port (such as 443 for https) between gRPC and an +// existing http.Handler, use a root http.Handler such as: +// +// if r.ProtoMajor == 2 && strings.HasPrefix( +// r.Header.Get("Content-Type"), "application/grpc") { +// grpcServer.ServeHTTP(w, r) +// } else { +// yourMux.ServeHTTP(w, r) +// } +// +// Note that ServeHTTP uses Go's HTTP/2 server implementation which is totally +// separate from grpc-go's HTTP/2 server. Performance and features may vary +// between the two paths. ServeHTTP does not support some gRPC features +// available through grpc-go's HTTP/2 server, and it is currently EXPERIMENTAL +// and subject to change. func (s *Server) ServeHTTP(w http.ResponseWriter, r *http.Request) { st, err := transport.NewServerHandlerTransport(w, r) if err != nil { @@ -581,14 +678,11 @@ func (s *Server) sendResponse(t transport.ServerTransport, stream *transport.Str } p, err := encode(s.opts.codec, msg, cp, cbuf, outPayload) if err != nil { - // This typically indicates a fatal issue (e.g., memory - // corruption or hardware faults) the application program - // cannot handle. - // - // TODO(zhaoq): There exist other options also such as only closing the - // faulty stream locally and remotely (Other streams can keep going). Find - // the optimal option. - grpclog.Fatalf("grpc: Server failed to encode response %v", err) + grpclog.Errorln("grpc: server failed to encode response: ", err) + return err + } + if len(p) > s.opts.maxSendMessageSize { + return status.Errorf(codes.ResourceExhausted, "grpc: trying to send message larger than max (%d vs. %d)", len(p), s.opts.maxSendMessageSize) } err = t.Write(stream, p, opts) if err == nil && outPayload != nil { @@ -605,9 +699,7 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. BeginTime: time.Now(), } sh.HandleRPC(stream.Context(), begin) - } - defer func() { - if sh != nil { + defer func() { end := &stats.End{ EndTime: time.Now(), } @@ -615,8 +707,8 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. end.Error = toRPCErr(err) } sh.HandleRPC(stream.Context(), end) - } - }() + }() + } if trInfo != nil { defer trInfo.tr.Finish() trInfo.firstLine.client = false @@ -633,136 +725,137 @@ func (s *Server) processUnaryRPC(t transport.ServerTransport, stream *transport. stream.SetSendCompress(s.opts.cp.Type()) } p := &parser{r: stream} - for { - pf, req, err := p.recvMsg(s.opts.maxMsgSize) - if err == io.EOF { - // The entire stream is done (for unary RPC only). - return err - } - if err == io.ErrUnexpectedEOF { - err = Errorf(codes.Internal, io.ErrUnexpectedEOF.Error()) - } - if err != nil { - switch err := err.(type) { - case *rpcError: - if e := t.WriteStatus(stream, err.code, err.desc); e != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status %v", e) - } + pf, req, err := p.recvMsg(s.opts.maxReceiveMessageSize) + if err == io.EOF { + // The entire stream is done (for unary RPC only). + return err + } + if err == io.ErrUnexpectedEOF { + err = Errorf(codes.Internal, io.ErrUnexpectedEOF.Error()) + } + if err != nil { + if st, ok := status.FromError(err); ok { + if e := t.WriteStatus(stream, st); e != nil { + grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e) + } + } else { + switch st := err.(type) { case transport.ConnectionError: // Nothing to do here. case transport.StreamError: - if e := t.WriteStatus(stream, err.Code, err.Desc); e != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status %v", e) + if e := t.WriteStatus(stream, status.New(st.Code, st.Desc)); e != nil { + grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e) } default: - panic(fmt.Sprintf("grpc: Unexpected error (%T) from recvMsg: %v", err, err)) + panic(fmt.Sprintf("grpc: Unexpected error (%T) from recvMsg: %v", st, st)) } - return err } + return err + } - if err := checkRecvPayload(pf, stream.RecvCompress(), s.opts.dc); err != nil { - switch err := err.(type) { - case *rpcError: - if e := t.WriteStatus(stream, err.code, err.desc); e != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status %v", e) - } - return err - default: - if e := t.WriteStatus(stream, codes.Internal, err.Error()); e != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status %v", e) - } - // TODO checkRecvPayload always return RPC error. Add a return here if necessary. + if err := checkRecvPayload(pf, stream.RecvCompress(), s.opts.dc); err != nil { + if st, ok := status.FromError(err); ok { + if e := t.WriteStatus(stream, st); e != nil { + grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e) } + return err } - var inPayload *stats.InPayload - if sh != nil { - inPayload = &stats.InPayload{ - RecvTime: time.Now(), - } + if e := t.WriteStatus(stream, status.New(codes.Internal, err.Error())); e != nil { + grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e) } - statusCode := codes.OK - statusDesc := "" - df := func(v interface{}) error { - if inPayload != nil { - inPayload.WireLength = len(req) - } - if pf == compressionMade { - var err error - req, err = s.opts.dc.Do(bytes.NewReader(req)) - if err != nil { - if err := t.WriteStatus(stream, codes.Internal, err.Error()); err != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status %v", err) - } - return Errorf(codes.Internal, err.Error()) - } - } - if len(req) > s.opts.maxMsgSize { - // TODO: Revisit the error code. Currently keep it consistent with - // java implementation. - statusCode = codes.Internal - statusDesc = fmt.Sprintf("grpc: server received a message of %d bytes exceeding %d limit", len(req), s.opts.maxMsgSize) - } - if err := s.opts.codec.Unmarshal(req, v); err != nil { - return err - } - if inPayload != nil { - inPayload.Payload = v - inPayload.Data = req - inPayload.Length = len(req) - sh.HandleRPC(stream.Context(), inPayload) - } - if trInfo != nil { - trInfo.tr.LazyLog(&payload{sent: false, msg: v}, true) - } - return nil + + // TODO checkRecvPayload always return RPC error. Add a return here if necessary. + } + var inPayload *stats.InPayload + if sh != nil { + inPayload = &stats.InPayload{ + RecvTime: time.Now(), } - reply, appErr := md.Handler(srv.server, stream.Context(), df, s.opts.unaryInt) - if appErr != nil { - if err, ok := appErr.(*rpcError); ok { - statusCode = err.code - statusDesc = err.desc - } else { - statusCode = convertCode(appErr) - statusDesc = appErr.Error() - } - if trInfo != nil && statusCode != codes.OK { - trInfo.tr.LazyLog(stringer(statusDesc), true) - trInfo.tr.SetError() - } - if err := t.WriteStatus(stream, statusCode, statusDesc); err != nil { - grpclog.Printf("grpc: Server.processUnaryRPC failed to write status: %v", err) + } + df := func(v interface{}) error { + if inPayload != nil { + inPayload.WireLength = len(req) + } + if pf == compressionMade { + var err error + req, err = s.opts.dc.Do(bytes.NewReader(req)) + if err != nil { + return Errorf(codes.Internal, err.Error()) } - return Errorf(statusCode, statusDesc) + } + if len(req) > s.opts.maxReceiveMessageSize { + // TODO: Revisit the error code. Currently keep it consistent with + // java implementation. + return status.Errorf(codes.ResourceExhausted, "grpc: received message larger than max (%d vs. %d)", len(req), s.opts.maxReceiveMessageSize) + } + if err := s.opts.codec.Unmarshal(req, v); err != nil { + return status.Errorf(codes.Internal, "grpc: error unmarshalling request: %v", err) + } + if inPayload != nil { + inPayload.Payload = v + inPayload.Data = req + inPayload.Length = len(req) + sh.HandleRPC(stream.Context(), inPayload) + } + if trInfo != nil { + trInfo.tr.LazyLog(&payload{sent: false, msg: v}, true) + } + return nil + } + reply, appErr := md.Handler(srv.server, stream.Context(), df, s.opts.unaryInt) + if appErr != nil { + appStatus, ok := status.FromError(appErr) + if !ok { + // Convert appErr if it is not a grpc status error. + appErr = status.Error(convertCode(appErr), appErr.Error()) + appStatus, _ = status.FromError(appErr) } if trInfo != nil { - trInfo.tr.LazyLog(stringer("OK"), false) + trInfo.tr.LazyLog(stringer(appStatus.Message()), true) + trInfo.tr.SetError() } - opts := &transport.Options{ - Last: true, - Delay: false, + if e := t.WriteStatus(stream, appStatus); e != nil { + grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status: %v", e) + } + return appErr + } + if trInfo != nil { + trInfo.tr.LazyLog(stringer("OK"), false) + } + opts := &transport.Options{ + Last: true, + Delay: false, + } + if err := s.sendResponse(t, stream, reply, s.opts.cp, opts); err != nil { + if err == io.EOF { + // The entire stream is done (for unary RPC only). + return err } - if err := s.sendResponse(t, stream, reply, s.opts.cp, opts); err != nil { - switch err := err.(type) { + if s, ok := status.FromError(err); ok { + if e := t.WriteStatus(stream, s); e != nil { + grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status: %v", e) + } + } else { + switch st := err.(type) { case transport.ConnectionError: // Nothing to do here. case transport.StreamError: - statusCode = err.Code - statusDesc = err.Desc + if e := t.WriteStatus(stream, status.New(st.Code, st.Desc)); e != nil { + grpclog.Warningf("grpc: Server.processUnaryRPC failed to write status %v", e) + } default: - statusCode = codes.Unknown - statusDesc = err.Error() + panic(fmt.Sprintf("grpc: Unexpected error (%T) from sendResponse: %v", st, st)) } - return err } - if trInfo != nil { - trInfo.tr.LazyLog(&payload{sent: true, msg: reply}, true) - } - errWrite := t.WriteStatus(stream, statusCode, statusDesc) - if statusCode != codes.OK { - return Errorf(statusCode, statusDesc) - } - return errWrite + return err + } + if trInfo != nil { + trInfo.tr.LazyLog(&payload{sent: true, msg: reply}, true) } + // TODO: Should we be logging if writing status failed here, like above? + // Should the logging be in WriteStatus? Should we ignore the WriteStatus + // error or allow the stats handler to see it? + return t.WriteStatus(stream, status.New(codes.OK, "")) } func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transport.Stream, srv *service, sd *StreamDesc, trInfo *traceInfo) (err error) { @@ -772,9 +865,7 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp BeginTime: time.Now(), } sh.HandleRPC(stream.Context(), begin) - } - defer func() { - if sh != nil { + defer func() { end := &stats.End{ EndTime: time.Now(), } @@ -782,21 +873,22 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp end.Error = toRPCErr(err) } sh.HandleRPC(stream.Context(), end) - } - }() + }() + } if s.opts.cp != nil { stream.SetSendCompress(s.opts.cp.Type()) } ss := &serverStream{ - t: t, - s: stream, - p: &parser{r: stream}, - codec: s.opts.codec, - cp: s.opts.cp, - dc: s.opts.dc, - maxMsgSize: s.opts.maxMsgSize, - trInfo: trInfo, - statsHandler: sh, + t: t, + s: stream, + p: &parser{r: stream}, + codec: s.opts.codec, + cp: s.opts.cp, + dc: s.opts.dc, + maxReceiveMessageSize: s.opts.maxReceiveMessageSize, + maxSendMessageSize: s.opts.maxSendMessageSize, + trInfo: trInfo, + statsHandler: sh, } if ss.cp != nil { ss.cbuf = new(bytes.Buffer) @@ -815,43 +907,47 @@ func (s *Server) processStreamingRPC(t transport.ServerTransport, stream *transp }() } var appErr error + var server interface{} + if srv != nil { + server = srv.server + } if s.opts.streamInt == nil { - appErr = sd.Handler(srv.server, ss) + appErr = sd.Handler(server, ss) } else { info := &StreamServerInfo{ FullMethod: stream.Method(), IsClientStream: sd.ClientStreams, IsServerStream: sd.ServerStreams, } - appErr = s.opts.streamInt(srv.server, ss, info, sd.Handler) + appErr = s.opts.streamInt(server, ss, info, sd.Handler) } if appErr != nil { - if err, ok := appErr.(*rpcError); ok { - ss.statusCode = err.code - ss.statusDesc = err.desc - } else if err, ok := appErr.(transport.StreamError); ok { - ss.statusCode = err.Code - ss.statusDesc = err.Desc - } else { - ss.statusCode = convertCode(appErr) - ss.statusDesc = appErr.Error() + appStatus, ok := status.FromError(appErr) + if !ok { + switch err := appErr.(type) { + case transport.StreamError: + appStatus = status.New(err.Code, err.Desc) + default: + appStatus = status.New(convertCode(appErr), appErr.Error()) + } + appErr = appStatus.Err() + } + if trInfo != nil { + ss.mu.Lock() + ss.trInfo.tr.LazyLog(stringer(appStatus.Message()), true) + ss.trInfo.tr.SetError() + ss.mu.Unlock() } + t.WriteStatus(ss.s, appStatus) + // TODO: Should we log an error from WriteStatus here and below? + return appErr } if trInfo != nil { ss.mu.Lock() - if ss.statusCode != codes.OK { - ss.trInfo.tr.LazyLog(stringer(ss.statusDesc), true) - ss.trInfo.tr.SetError() - } else { - ss.trInfo.tr.LazyLog(stringer("OK"), false) - } + ss.trInfo.tr.LazyLog(stringer("OK"), false) ss.mu.Unlock() } - errWrite := t.WriteStatus(ss.s, ss.statusCode, ss.statusDesc) - if ss.statusCode != codes.OK { - return Errorf(ss.statusCode, ss.statusDesc) - } - return errWrite + return t.WriteStatus(ss.s, status.New(codes.OK, "")) } @@ -867,12 +963,12 @@ func (s *Server) handleStream(t transport.ServerTransport, stream *transport.Str trInfo.tr.SetError() } errDesc := fmt.Sprintf("malformed method name: %q", stream.Method()) - if err := t.WriteStatus(stream, codes.InvalidArgument, errDesc); err != nil { + if err := t.WriteStatus(stream, status.New(codes.ResourceExhausted, errDesc)); err != nil { if trInfo != nil { trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) trInfo.tr.SetError() } - grpclog.Printf("grpc: Server.handleStream failed to write status: %v", err) + grpclog.Warningf("grpc: Server.handleStream failed to write status: %v", err) } if trInfo != nil { trInfo.tr.Finish() @@ -883,17 +979,21 @@ func (s *Server) handleStream(t transport.ServerTransport, stream *transport.Str method := sm[pos+1:] srv, ok := s.m[service] if !ok { + if unknownDesc := s.opts.unknownStreamDesc; unknownDesc != nil { + s.processStreamingRPC(t, stream, nil, unknownDesc, trInfo) + return + } if trInfo != nil { trInfo.tr.LazyLog(&fmtStringer{"Unknown service %v", []interface{}{service}}, true) trInfo.tr.SetError() } errDesc := fmt.Sprintf("unknown service %v", service) - if err := t.WriteStatus(stream, codes.Unimplemented, errDesc); err != nil { + if err := t.WriteStatus(stream, status.New(codes.Unimplemented, errDesc)); err != nil { if trInfo != nil { trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) trInfo.tr.SetError() } - grpclog.Printf("grpc: Server.handleStream failed to write status: %v", err) + grpclog.Warningf("grpc: Server.handleStream failed to write status: %v", err) } if trInfo != nil { trInfo.tr.Finish() @@ -913,13 +1013,17 @@ func (s *Server) handleStream(t transport.ServerTransport, stream *transport.Str trInfo.tr.LazyLog(&fmtStringer{"Unknown method %v", []interface{}{method}}, true) trInfo.tr.SetError() } + if unknownDesc := s.opts.unknownStreamDesc; unknownDesc != nil { + s.processStreamingRPC(t, stream, nil, unknownDesc, trInfo) + return + } errDesc := fmt.Sprintf("unknown method %v", method) - if err := t.WriteStatus(stream, codes.Unimplemented, errDesc); err != nil { + if err := t.WriteStatus(stream, status.New(codes.Unimplemented, errDesc)); err != nil { if trInfo != nil { trInfo.tr.LazyLog(&fmtStringer{"%v", []interface{}{err}}, true) trInfo.tr.SetError() } - grpclog.Printf("grpc: Server.handleStream failed to write status: %v", err) + grpclog.Warningf("grpc: Server.handleStream failed to write status: %v", err) } if trInfo != nil { trInfo.tr.Finish() @@ -957,8 +1061,9 @@ func (s *Server) Stop() { s.mu.Unlock() } -// GracefulStop stops the gRPC server gracefully. It stops the server to accept new -// connections and RPCs and blocks until all the pending RPCs are finished. +// GracefulStop stops the gRPC server gracefully. It stops the server from +// accepting new connections and RPCs and blocks until all the pending RPCs are +// finished. func (s *Server) GracefulStop() { s.mu.Lock() defer s.mu.Unlock() diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stats/handlers.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stats/handlers.go index 26e1a8e2..05b384c6 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stats/handlers.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stats/handlers.go @@ -1,33 +1,18 @@ /* * - * Copyright 2016, Google Inc. - * All rights reserved. + * Copyright 2016 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -45,19 +30,22 @@ type ConnTagInfo struct { RemoteAddr net.Addr // LocalAddr is the local address of the corresponding connection. LocalAddr net.Addr - // TODO add QOS related fields. } // RPCTagInfo defines the relevant information needed by RPC context tagger. type RPCTagInfo struct { // FullMethodName is the RPC method in the format of /package.service/method. FullMethodName string + // FailFast indicates if this RPC is failfast. + // This field is only valid on client side, it's always false on server side. + FailFast bool } // Handler defines the interface for the related stats handling (e.g., RPCs, connections). type Handler interface { // TagRPC can attach some information to the given context. - // The returned context is used in the rest lifetime of the RPC. + // The context used for the rest lifetime of the RPC will be derived from + // the returned context. TagRPC(context.Context, *RPCTagInfo) context.Context // HandleRPC processes the RPC stats. HandleRPC(context.Context, RPCStats) diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stats/stats.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stats/stats.go index a82448a6..338a3a75 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stats/stats.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stats/stats.go @@ -1,33 +1,18 @@ /* * - * Copyright 2016, Google Inc. - * All rights reserved. + * Copyright 2016 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -49,7 +34,7 @@ type RPCStats interface { } // Begin contains stats when an RPC begins. -// FailFast are only valid if Client is true. +// FailFast is only valid if this Begin is from client side. type Begin struct { // Client is true if this Begin is from client side. Client bool @@ -59,7 +44,7 @@ type Begin struct { FailFast bool } -// IsClient indicates if this is from client side. +// IsClient indicates if the stats information is from client side. func (s *Begin) IsClient() bool { return s.Client } func (s *Begin) isRPCStats() {} @@ -80,19 +65,19 @@ type InPayload struct { RecvTime time.Time } -// IsClient indicates if this is from client side. +// IsClient indicates if the stats information is from client side. func (s *InPayload) IsClient() bool { return s.Client } func (s *InPayload) isRPCStats() {} // InHeader contains stats when a header is received. -// FullMethod, addresses and Compression are only valid if Client is false. type InHeader struct { // Client is true if this InHeader is from client side. Client bool // WireLength is the wire length of header. WireLength int + // The following fields are valid only if Client is false. // FullMethod is the full RPC method string, i.e., /package.service/method. FullMethod string // RemoteAddr is the remote address of the corresponding connection. @@ -103,7 +88,7 @@ type InHeader struct { Compression string } -// IsClient indicates if this is from client side. +// IsClient indicates if the stats information is from client side. func (s *InHeader) IsClient() bool { return s.Client } func (s *InHeader) isRPCStats() {} @@ -116,7 +101,7 @@ type InTrailer struct { WireLength int } -// IsClient indicates if this is from client side. +// IsClient indicates if the stats information is from client side. func (s *InTrailer) IsClient() bool { return s.Client } func (s *InTrailer) isRPCStats() {} @@ -137,19 +122,19 @@ type OutPayload struct { SentTime time.Time } -// IsClient indicates if this is from client side. +// IsClient indicates if this stats information is from client side. func (s *OutPayload) IsClient() bool { return s.Client } func (s *OutPayload) isRPCStats() {} // OutHeader contains stats when a header is sent. -// FullMethod, addresses and Compression are only valid if Client is true. type OutHeader struct { // Client is true if this OutHeader is from client side. Client bool // WireLength is the wire length of header. WireLength int + // The following fields are valid only if Client is true. // FullMethod is the full RPC method string, i.e., /package.service/method. FullMethod string // RemoteAddr is the remote address of the corresponding connection. @@ -160,7 +145,7 @@ type OutHeader struct { Compression string } -// IsClient indicates if this is from client side. +// IsClient indicates if this stats information is from client side. func (s *OutHeader) IsClient() bool { return s.Client } func (s *OutHeader) isRPCStats() {} @@ -173,7 +158,7 @@ type OutTrailer struct { WireLength int } -// IsClient indicates if this is from client side. +// IsClient indicates if this stats information is from client side. func (s *OutTrailer) IsClient() bool { return s.Client } func (s *OutTrailer) isRPCStats() {} @@ -184,7 +169,9 @@ type End struct { Client bool // EndTime is the time when the RPC ends. EndTime time.Time - // Error is the error just happened. Its type is gRPC error. + // Error is the error the RPC ended with. It is an error generated from + // status.Status and can be converted back to status.Status using + // status.FromError if non-nil. Error error } diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/status/status.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/status/status.go new file mode 100644 index 00000000..871dc4b3 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/status/status.go @@ -0,0 +1,168 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// Package status implements errors returned by gRPC. These errors are +// serialized and transmitted on the wire between server and client, and allow +// for additional data to be transmitted via the Details field in the status +// proto. gRPC service handlers should return an error created by this +// package, and gRPC clients should expect a corresponding error to be +// returned from the RPC call. +// +// This package upholds the invariants that a non-nil error may not +// contain an OK code, and an OK code must result in a nil error. +package status + +import ( + "errors" + "fmt" + + "github.com/golang/protobuf/proto" + "github.com/golang/protobuf/ptypes" + spb "google.golang.org/genproto/googleapis/rpc/status" + "google.golang.org/grpc/codes" +) + +// statusError is an alias of a status proto. It implements error and Status, +// and a nil statusError should never be returned by this package. +type statusError spb.Status + +func (se *statusError) Error() string { + p := (*spb.Status)(se) + return fmt.Sprintf("rpc error: code = %s desc = %s", codes.Code(p.GetCode()), p.GetMessage()) +} + +func (se *statusError) status() *Status { + return &Status{s: (*spb.Status)(se)} +} + +// Status represents an RPC status code, message, and details. It is immutable +// and should be created with New, Newf, or FromProto. +type Status struct { + s *spb.Status +} + +// Code returns the status code contained in s. +func (s *Status) Code() codes.Code { + if s == nil || s.s == nil { + return codes.OK + } + return codes.Code(s.s.Code) +} + +// Message returns the message contained in s. +func (s *Status) Message() string { + if s == nil || s.s == nil { + return "" + } + return s.s.Message +} + +// Proto returns s's status as an spb.Status proto message. +func (s *Status) Proto() *spb.Status { + if s == nil { + return nil + } + return proto.Clone(s.s).(*spb.Status) +} + +// Err returns an immutable error representing s; returns nil if s.Code() is +// OK. +func (s *Status) Err() error { + if s.Code() == codes.OK { + return nil + } + return (*statusError)(s.s) +} + +// New returns a Status representing c and msg. +func New(c codes.Code, msg string) *Status { + return &Status{s: &spb.Status{Code: int32(c), Message: msg}} +} + +// Newf returns New(c, fmt.Sprintf(format, a...)). +func Newf(c codes.Code, format string, a ...interface{}) *Status { + return New(c, fmt.Sprintf(format, a...)) +} + +// Error returns an error representing c and msg. If c is OK, returns nil. +func Error(c codes.Code, msg string) error { + return New(c, msg).Err() +} + +// Errorf returns Error(c, fmt.Sprintf(format, a...)). +func Errorf(c codes.Code, format string, a ...interface{}) error { + return Error(c, fmt.Sprintf(format, a...)) +} + +// ErrorProto returns an error representing s. If s.Code is OK, returns nil. +func ErrorProto(s *spb.Status) error { + return FromProto(s).Err() +} + +// FromProto returns a Status representing s. +func FromProto(s *spb.Status) *Status { + return &Status{s: proto.Clone(s).(*spb.Status)} +} + +// FromError returns a Status representing err if it was produced from this +// package, otherwise it returns nil, false. +func FromError(err error) (s *Status, ok bool) { + if err == nil { + return &Status{s: &spb.Status{Code: int32(codes.OK)}}, true + } + if s, ok := err.(*statusError); ok { + return s.status(), true + } + return nil, false +} + +// WithDetails returns a new status with the provided details messages appended to the status. +// If any errors are encountered, it returns nil and the first error encountered. +func (s *Status) WithDetails(details ...proto.Message) (*Status, error) { + if s.Code() == codes.OK { + return nil, errors.New("no error details for status with code OK") + } + // s.Code() != OK implies that s.Proto() != nil. + p := s.Proto() + for _, detail := range details { + any, err := ptypes.MarshalAny(detail) + if err != nil { + return nil, err + } + p.Details = append(p.Details, any) + } + return &Status{s: p}, nil +} + +// Details returns a slice of details messages attached to the status. +// If a detail cannot be decoded, the error is returned in place of the detail. +func (s *Status) Details() []interface{} { + if s == nil || s.s == nil { + return nil + } + details := make([]interface{}, 0, len(s.s.Details)) + for _, any := range s.s.Details { + detail := &ptypes.DynamicAny{} + if err := ptypes.UnmarshalAny(any, detail); err != nil { + details = append(details, err) + continue + } + details = append(details, detail.Message) + } + return details +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stream.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stream.go index bb468dc3..1c621ba8 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stream.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/stream.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -37,7 +22,6 @@ import ( "bytes" "errors" "io" - "math" "sync" "time" @@ -45,7 +29,9 @@ import ( "golang.org/x/net/trace" "google.golang.org/grpc/codes" "google.golang.org/grpc/metadata" + "google.golang.org/grpc/peer" "google.golang.org/grpc/stats" + "google.golang.org/grpc/status" "google.golang.org/grpc/transport" ) @@ -73,11 +59,17 @@ type Stream interface { // side. On server side, it simply returns the error to the caller. // SendMsg is called by generated code. Also Users can call SendMsg // directly when it is really needed in their use cases. + // It's safe to have a goroutine calling SendMsg and another goroutine calling + // recvMsg on the same stream at the same time. + // But it is not safe to call SendMsg on the same stream in different goroutines. SendMsg(m interface{}) error // RecvMsg blocks until it receives a message or the stream is // done. On client side, it returns io.EOF when the stream is done. On // any other error, it aborts the stream and returns an RPC status. On // server side, it simply returns the error to the caller. + // It's safe to have a goroutine calling SendMsg and another goroutine calling + // recvMsg on the same stream at the same time. + // But it is not safe to call RecvMsg on the same stream in different goroutines. RecvMsg(m interface{}) error } @@ -93,6 +85,11 @@ type ClientStream interface { // CloseSend closes the send direction of the stream. It closes the stream // when non-nil error is met. CloseSend() error + // Stream.SendMsg() may return a non-nil error when something wrong happens sending + // the request. The returned error indicates the status of this sending, not the final + // status of the RPC. + // Always call Stream.RecvMsg() to get the final status if you care about the status of + // the RPC. Stream } @@ -113,25 +110,39 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth cancel context.CancelFunc ) c := defaultCallInfo - if mc, ok := cc.getMethodConfig(method); ok { - c.failFast = !mc.WaitForReady - if mc.Timeout > 0 { - ctx, cancel = context.WithTimeout(ctx, mc.Timeout) - } + mc := cc.GetMethodConfig(method) + if mc.WaitForReady != nil { + c.failFast = !*mc.WaitForReady + } + + if mc.Timeout != nil { + ctx, cancel = context.WithTimeout(ctx, *mc.Timeout) } + + opts = append(cc.dopts.callOptions, opts...) for _, o := range opts { if err := o.before(&c); err != nil { return nil, toRPCErr(err) } } + c.maxSendMessageSize = getMaxSize(mc.MaxReqSize, c.maxSendMessageSize, defaultClientMaxSendMessageSize) + c.maxReceiveMessageSize = getMaxSize(mc.MaxRespSize, c.maxReceiveMessageSize, defaultClientMaxReceiveMessageSize) + callHdr := &transport.CallHdr{ Host: cc.authority, Method: method, - Flush: desc.ServerStreams && desc.ClientStreams, + // If it's not client streaming, we should already have the request to be sent, + // so we don't flush the header. + // If it's client streaming, the user may never send a request or send it any + // time soon, so we ask the transport to flush the header. + Flush: desc.ClientStreams, } if cc.dopts.cp != nil { callHdr.SendCompress = cc.dopts.cp.Type() } + if c.creds != nil { + callHdr.Creds = c.creds + } var trInfo traceInfo if EnableTracing { trInfo.tr = trace.New("grpc.Sent."+methodFamily(method), method) @@ -151,26 +162,27 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth } }() } + ctx = newContextWithRPCInfo(ctx) sh := cc.dopts.copts.StatsHandler if sh != nil { - ctx = sh.TagRPC(ctx, &stats.RPCTagInfo{FullMethodName: method}) + ctx = sh.TagRPC(ctx, &stats.RPCTagInfo{FullMethodName: method, FailFast: c.failFast}) begin := &stats.Begin{ Client: true, BeginTime: time.Now(), FailFast: c.failFast, } sh.HandleRPC(ctx, begin) - } - defer func() { - if err != nil && sh != nil { - // Only handle end stats if err != nil. - end := &stats.End{ - Client: true, - Error: err, + defer func() { + if err != nil { + // Only handle end stats if err != nil. + end := &stats.End{ + Client: true, + Error: err, + } + sh.HandleRPC(ctx, end) } - sh.HandleRPC(ctx, end) - } - }() + }() + } gopts := BalancerGetOptions{ BlockingWait: !c.failFast, } @@ -178,7 +190,7 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth t, put, err = cc.getTransport(ctx, gopts) if err != nil { // TODO(zhaoq): Probably revisit the error handling. - if _, ok := err.(*rpcError); ok { + if _, ok := status.FromError(err); ok { return nil, err } if err == errConnClosing || err == errConnUnavailable { @@ -193,20 +205,27 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth s, err = t.NewStream(ctx, callHdr) if err != nil { + if _, ok := err.(transport.ConnectionError); ok && put != nil { + // If error is connection error, transport was sending data on wire, + // and we are not sure if anything has been sent on wire. + // If error is not connection error, we are sure nothing has been sent. + updateRPCInfoInContext(ctx, rpcInfo{bytesSent: true, bytesReceived: false}) + } if put != nil { put() put = nil } - if _, ok := err.(transport.ConnectionError); ok || err == transport.ErrStreamDrain { - if c.failFast { - return nil, toRPCErr(err) - } + if _, ok := err.(transport.ConnectionError); (ok || err == transport.ErrStreamDrain) && !c.failFast { continue } return nil, toRPCErr(err) } break } + // Set callInfo.peer object from stream's context. + if peer, ok := peer.FromContext(s.Context()); ok { + c.peer = peer + } cs := &clientStream{ opts: opts, c: c, @@ -236,14 +255,13 @@ func newClientStream(ctx context.Context, desc *StreamDesc, cc *ClientConn, meth select { case <-t.Error(): // Incur transport error, simply exit. + case <-cc.ctx.Done(): + cs.finish(ErrClientConnClosing) + cs.closeTransportStream(ErrClientConnClosing) case <-s.Done(): // TODO: The trace of the RPC is terminated here when there is no pending // I/O, which is probably not the optimal solution. - if s.StatusCode() == codes.OK { - cs.finish(nil) - } else { - cs.finish(Errorf(s.StatusCode(), "%s", s.StatusDesc())) - } + cs.finish(s.Status().Err()) cs.closeTransportStream(nil) case <-s.GoAway(): cs.finish(errConnDrain) @@ -273,9 +291,10 @@ type clientStream struct { tracing bool // set to EnableTracing when the clientStream is created. - mu sync.Mutex - put func() - closed bool + mu sync.Mutex + put func() + closed bool + finished bool // trInfo.tr is set when the clientStream is created (if EnableTracing is true), // and is set to nil when the clientStream's finish method is called. trInfo traceInfo @@ -350,7 +369,13 @@ func (cs *clientStream) SendMsg(m interface{}) (err error) { } }() if err != nil { - return Errorf(codes.Internal, "grpc: %v", err) + return err + } + if cs.c.maxSendMessageSize == nil { + return Errorf(codes.Internal, "callInfo maxSendMessageSize field uninitialized(nil)") + } + if len(out) > *cs.c.maxSendMessageSize { + return Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(out), *cs.c.maxSendMessageSize) } err = cs.t.Write(cs.s, out, &transport.Options{Last: false}) if err == nil && outPayload != nil { @@ -361,28 +386,16 @@ func (cs *clientStream) SendMsg(m interface{}) (err error) { } func (cs *clientStream) RecvMsg(m interface{}) (err error) { - defer func() { - if err != nil && cs.statsHandler != nil { - // Only generate End if err != nil. - // If err == nil, it's not the last RecvMsg. - // The last RecvMsg gets either an RPC error or io.EOF. - end := &stats.End{ - Client: true, - EndTime: time.Now(), - } - if err != io.EOF { - end.Error = toRPCErr(err) - } - cs.statsHandler.HandleRPC(cs.statsCtx, end) - } - }() var inPayload *stats.InPayload if cs.statsHandler != nil { inPayload = &stats.InPayload{ Client: true, } } - err = recv(cs.p, cs.codec, cs.s, cs.dc, m, math.MaxInt32, inPayload) + if cs.c.maxReceiveMessageSize == nil { + return Errorf(codes.Internal, "callInfo maxReceiveMessageSize field uninitialized(nil)") + } + err = recv(cs.p, cs.codec, cs.s, cs.dc, m, *cs.c.maxReceiveMessageSize, inPayload) defer func() { // err != nil indicates the termination of the stream. if err != nil { @@ -405,17 +418,20 @@ func (cs *clientStream) RecvMsg(m interface{}) (err error) { } // Special handling for client streaming rpc. // This recv expects EOF or errors, so we don't collect inPayload. - err = recv(cs.p, cs.codec, cs.s, cs.dc, m, math.MaxInt32, nil) + if cs.c.maxReceiveMessageSize == nil { + return Errorf(codes.Internal, "callInfo maxReceiveMessageSize field uninitialized(nil)") + } + err = recv(cs.p, cs.codec, cs.s, cs.dc, m, *cs.c.maxReceiveMessageSize, nil) cs.closeTransportStream(err) if err == nil { return toRPCErr(errors.New("grpc: client streaming protocol violation: get <nil>, want <EOF>")) } if err == io.EOF { - if cs.s.StatusCode() == codes.OK { - cs.finish(err) - return nil + if se := cs.s.Status().Err(); se != nil { + return se } - return Errorf(cs.s.StatusCode(), "%s", cs.s.StatusDesc()) + cs.finish(err) + return nil } return toRPCErr(err) } @@ -423,11 +439,11 @@ func (cs *clientStream) RecvMsg(m interface{}) (err error) { cs.closeTransportStream(err) } if err == io.EOF { - if cs.s.StatusCode() == codes.OK { - // Returns io.EOF to indicate the end of the stream. - return + if statusErr := cs.s.Status().Err(); statusErr != nil { + return statusErr } - return Errorf(cs.s.StatusCode(), "%s", cs.s.StatusDesc()) + // Returns io.EOF to indicate the end of the stream. + return } return toRPCErr(err) } @@ -461,20 +477,39 @@ func (cs *clientStream) closeTransportStream(err error) { } func (cs *clientStream) finish(err error) { + cs.mu.Lock() + defer cs.mu.Unlock() + if cs.finished { + return + } + cs.finished = true defer func() { if cs.cancel != nil { cs.cancel() } }() - cs.mu.Lock() - defer cs.mu.Unlock() for _, o := range cs.opts { o.after(&cs.c) } if cs.put != nil { + updateRPCInfoInContext(cs.s.Context(), rpcInfo{ + bytesSent: cs.s.BytesSent(), + bytesReceived: cs.s.BytesReceived(), + }) cs.put() cs.put = nil } + if cs.statsHandler != nil { + end := &stats.End{ + Client: true, + EndTime: time.Now(), + } + if err != io.EOF { + // end.Error is nil if the RPC finished successfully. + end.Error = toRPCErr(err) + } + cs.statsHandler.HandleRPC(cs.statsCtx, end) + } if !cs.tracing { return } @@ -511,17 +546,16 @@ type ServerStream interface { // serverStream implements a server side Stream. type serverStream struct { - t transport.ServerTransport - s *transport.Stream - p *parser - codec Codec - cp Compressor - dc Decompressor - cbuf *bytes.Buffer - maxMsgSize int - statusCode codes.Code - statusDesc string - trInfo *traceInfo + t transport.ServerTransport + s *transport.Stream + p *parser + codec Codec + cp Compressor + dc Decompressor + cbuf *bytes.Buffer + maxReceiveMessageSize int + maxSendMessageSize int + trInfo *traceInfo statsHandler stats.Handler @@ -577,9 +611,11 @@ func (ss *serverStream) SendMsg(m interface{}) (err error) { } }() if err != nil { - err = Errorf(codes.Internal, "grpc: %v", err) return err } + if len(out) > ss.maxSendMessageSize { + return Errorf(codes.ResourceExhausted, "trying to send message larger than max (%d vs. %d)", len(out), ss.maxSendMessageSize) + } if err := ss.t.Write(ss.s, out, &transport.Options{Last: false}); err != nil { return toRPCErr(err) } @@ -609,7 +645,7 @@ func (ss *serverStream) RecvMsg(m interface{}) (err error) { if ss.statsHandler != nil { inPayload = &stats.InPayload{} } - if err := recv(ss.p, ss.codec, ss.s, ss.dc, m, ss.maxMsgSize, inPayload); err != nil { + if err := recv(ss.p, ss.codec, ss.s, ss.dc, m, ss.maxReceiveMessageSize, inPayload); err != nil { if err == io.EOF { return err } diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/tap/tap.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/tap/tap.go index 0f366476..decb6786 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/tap/tap.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/tap/tap.go @@ -1,33 +1,18 @@ /* * - * Copyright 2016, Google Inc. - * All rights reserved. + * Copyright 2016 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/trace.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/trace.go index f6747e1d..b419c9e3 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/trace.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/trace.go @@ -1,33 +1,18 @@ /* * - * Copyright 2015, Google Inc. - * All rights reserved. + * Copyright 2015 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/bdp_estimator.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/bdp_estimator.go new file mode 100644 index 00000000..667edb80 --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/bdp_estimator.go @@ -0,0 +1,143 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +package transport + +import ( + "sync" + "time" +) + +const ( + // bdpLimit is the maximum value the flow control windows + // will be increased to. + bdpLimit = (1 << 20) * 4 + // alpha is a constant factor used to keep a moving average + // of RTTs. + alpha = 0.9 + // If the current bdp sample is greater than or equal to + // our beta * our estimated bdp and the current bandwidth + // sample is the maximum bandwidth observed so far, we + // increase our bbp estimate by a factor of gamma. + beta = 0.66 + // To put our bdp to be smaller than or equal to twice the real BDP, + // we should multiply our current sample with 4/3, however to round things out + // we use 2 as the multiplication factor. + gamma = 2 +) + +var ( + // Adding arbitrary data to ping so that its ack can be + // identified. + // Easter-egg: what does the ping message say? + bdpPing = &ping{data: [8]byte{2, 4, 16, 16, 9, 14, 7, 7}} +) + +type bdpEstimator struct { + // sentAt is the time when the ping was sent. + sentAt time.Time + + mu sync.Mutex + // bdp is the current bdp estimate. + bdp uint32 + // sample is the number of bytes received in one measurement cycle. + sample uint32 + // bwMax is the maximum bandwidth noted so far (bytes/sec). + bwMax float64 + // bool to keep track of the begining of a new measurement cycle. + isSent bool + // Callback to update the window sizes. + updateFlowControl func(n uint32) + // sampleCount is the number of samples taken so far. + sampleCount uint64 + // round trip time (seconds) + rtt float64 +} + +// timesnap registers the time bdp ping was sent out so that +// network rtt can be calculated when its ack is recieved. +// It is called (by controller) when the bdpPing is +// being written on the wire. +func (b *bdpEstimator) timesnap(d [8]byte) { + if bdpPing.data != d { + return + } + b.sentAt = time.Now() +} + +// add adds bytes to the current sample for calculating bdp. +// It returns true only if a ping must be sent. This can be used +// by the caller (handleData) to make decision about batching +// a window update with it. +func (b *bdpEstimator) add(n uint32) bool { + b.mu.Lock() + defer b.mu.Unlock() + if b.bdp == bdpLimit { + return false + } + if !b.isSent { + b.isSent = true + b.sample = n + b.sentAt = time.Time{} + b.sampleCount++ + return true + } + b.sample += n + return false +} + +// calculate is called when an ack for a bdp ping is received. +// Here we calculate the current bdp and bandwidth sample and +// decide if the flow control windows should go up. +func (b *bdpEstimator) calculate(d [8]byte) { + // Check if the ping acked for was the bdp ping. + if bdpPing.data != d { + return + } + b.mu.Lock() + rttSample := time.Since(b.sentAt).Seconds() + if b.sampleCount < 10 { + // Bootstrap rtt with an average of first 10 rtt samples. + b.rtt += (rttSample - b.rtt) / float64(b.sampleCount) + } else { + // Heed to the recent past more. + b.rtt += (rttSample - b.rtt) * float64(alpha) + } + b.isSent = false + // The number of bytes accumalated so far in the sample is smaller + // than or equal to 1.5 times the real BDP on a saturated connection. + bwCurrent := float64(b.sample) / (b.rtt * float64(1.5)) + if bwCurrent > b.bwMax { + b.bwMax = bwCurrent + } + // If the current sample (which is smaller than or equal to the 1.5 times the real BDP) is + // greater than or equal to 2/3rd our perceived bdp AND this is the maximum bandwidth seen so far, we + // should update our perception of the network BDP. + if float64(b.sample) >= beta*float64(b.bdp) && bwCurrent == b.bwMax && b.bdp != bdpLimit { + sampleFloat := float64(b.sample) + b.bdp = uint32(gamma * sampleFloat) + if b.bdp > bdpLimit { + b.bdp = bdpLimit + } + bdp := b.bdp + b.mu.Unlock() + b.updateFlowControl(bdp) + return + } + b.mu.Unlock() +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/control.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/control.go index 2586cba4..501eb03c 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/control.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/control.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -35,7 +20,9 @@ package transport import ( "fmt" + "math" "sync" + "time" "golang.org/x/net/http2" ) @@ -44,8 +31,19 @@ const ( // The default value of flow control window size in HTTP2 spec. defaultWindowSize = 65535 // The initial window size for flow control. - initialWindowSize = defaultWindowSize // for an RPC - initialConnWindowSize = defaultWindowSize * 16 // for a connection + initialWindowSize = defaultWindowSize // for an RPC + infinity = time.Duration(math.MaxInt64) + defaultClientKeepaliveTime = infinity + defaultClientKeepaliveTimeout = time.Duration(20 * time.Second) + defaultMaxStreamsClient = 100 + defaultMaxConnectionIdle = infinity + defaultMaxConnectionAge = infinity + defaultMaxConnectionAgeGrace = infinity + defaultServerKeepaliveTime = time.Duration(2 * time.Hour) + defaultServerKeepaliveTimeout = time.Duration(20 * time.Second) + defaultKeepalivePolicyMinTime = time.Duration(5 * time.Minute) + // max window limit set by HTTP2 Specs. + maxWindowSize = math.MaxInt32 ) // The following defines various control items which could flow through @@ -54,6 +52,7 @@ const ( type windowUpdate struct { streamID uint32 increment uint32 + flush bool } func (*windowUpdate) item() {} @@ -73,6 +72,10 @@ type resetStream struct { func (*resetStream) item() {} type goAway struct { + code http2.ErrCode + debugData []byte + headsUp bool + closeConn bool } func (*goAway) item() {} @@ -143,16 +146,59 @@ func (qb *quotaPool) acquire() <-chan int { // inFlow deals with inbound flow control type inFlow struct { + mu sync.Mutex // The inbound flow control limit for pending data. limit uint32 - - mu sync.Mutex // pendingData is the overall data which have been received but not been // consumed by applications. pendingData uint32 // The amount of data the application has consumed but grpc has not sent // window update for them. Used to reduce window update frequency. pendingUpdate uint32 + // delta is the extra window update given by receiver when an application + // is reading data bigger in size than the inFlow limit. + delta uint32 +} + +// newLimit updates the inflow window to a new value n. +// It assumes that n is always greater than the old limit. +func (f *inFlow) newLimit(n uint32) uint32 { + f.mu.Lock() + defer f.mu.Unlock() + d := n - f.limit + f.limit = n + return d +} + +func (f *inFlow) maybeAdjust(n uint32) uint32 { + if n > uint32(math.MaxInt32) { + n = uint32(math.MaxInt32) + } + f.mu.Lock() + defer f.mu.Unlock() + // estSenderQuota is the receiver's view of the maximum number of bytes the sender + // can send without a window update. + estSenderQuota := int32(f.limit - (f.pendingData + f.pendingUpdate)) + // estUntransmittedData is the maximum number of bytes the sends might not have put + // on the wire yet. A value of 0 or less means that we have already received all or + // more bytes than the application is requesting to read. + estUntransmittedData := int32(n - f.pendingData) // Casting into int32 since it could be negative. + // This implies that unless we send a window update, the sender won't be able to send all the bytes + // for this message. Therefore we must send an update over the limit since there's an active read + // request from the application. + if estUntransmittedData > estSenderQuota { + // Sender's window shouldn't go more than 2^31 - 1 as speecified in the HTTP spec. + if f.limit+n > maxWindowSize { + f.delta = maxWindowSize - f.limit + } else { + // Send a window update for the whole message and not just the difference between + // estUntransmittedData and estSenderQuota. This will be helpful in case the message + // is padded; We will fallback on the current available window(at least a 1/4th of the limit). + f.delta = n + } + return f.delta + } + return 0 } // onData is invoked when some data frame is received. It updates pendingData. @@ -160,7 +206,7 @@ func (f *inFlow) onData(n uint32) error { f.mu.Lock() defer f.mu.Unlock() f.pendingData += n - if f.pendingData+f.pendingUpdate > f.limit { + if f.pendingData+f.pendingUpdate > f.limit+f.delta { return fmt.Errorf("received %d-bytes data exceeding the limit %d bytes", f.pendingData+f.pendingUpdate, f.limit) } return nil @@ -175,6 +221,13 @@ func (f *inFlow) onRead(n uint32) uint32 { return 0 } f.pendingData -= n + if n > f.delta { + n -= f.delta + f.delta = 0 + } else { + f.delta -= n + n = 0 + } f.pendingUpdate += n if f.pendingUpdate >= f.limit/4 { wu := f.pendingUpdate @@ -184,10 +237,10 @@ func (f *inFlow) onRead(n uint32) uint32 { return 0 } -func (f *inFlow) resetPendingData() uint32 { +func (f *inFlow) resetPendingUpdate() uint32 { f.mu.Lock() defer f.mu.Unlock() - n := f.pendingData - f.pendingData = 0 + n := f.pendingUpdate + f.pendingUpdate = 0 return n } diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/go16.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/go16.go index ee1c46ba..7cffee11 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/go16.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/go16.go @@ -1,34 +1,20 @@ // +build go1.6,!go1.7 /* - * Copyright 2016, Google Inc. - * All rights reserved. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Copyright 2016 gRPC authors. * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -37,6 +23,8 @@ package transport import ( "net" + "google.golang.org/grpc/codes" + "golang.org/x/net/context" ) @@ -44,3 +32,14 @@ import ( func dialContext(ctx context.Context, network, address string) (net.Conn, error) { return (&net.Dialer{Cancel: ctx.Done()}).Dial(network, address) } + +// ContextErr converts the error from context package into a StreamError. +func ContextErr(err error) StreamError { + switch err { + case context.DeadlineExceeded: + return streamErrorf(codes.DeadlineExceeded, "%v", err) + case context.Canceled: + return streamErrorf(codes.Canceled, "%v", err) + } + return streamErrorf(codes.Internal, "Unexpected error from context packet: %v", err) +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/go17.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/go17.go index 356f13ff..2464e69f 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/go17.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/go17.go @@ -1,46 +1,46 @@ // +build go1.7 /* - * Copyright 2016, Google Inc. - * All rights reserved. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Copyright 2016 gRPC authors. * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ package transport import ( + "context" "net" - "golang.org/x/net/context" + "google.golang.org/grpc/codes" + + netctx "golang.org/x/net/context" ) // dialContext connects to the address on the named network. func dialContext(ctx context.Context, network, address string) (net.Conn, error) { return (&net.Dialer{}).DialContext(ctx, network, address) } + +// ContextErr converts the error from context package into a StreamError. +func ContextErr(err error) StreamError { + switch err { + case context.DeadlineExceeded, netctx.DeadlineExceeded: + return streamErrorf(codes.DeadlineExceeded, "%v", err) + case context.Canceled, netctx.Canceled: + return streamErrorf(codes.Canceled, "%v", err) + } + return streamErrorf(codes.Internal, "Unexpected error from context packet: %v", err) +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/handler_server.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/handler_server.go index 10b6dc0b..27372b50 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/handler_server.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/handler_server.go @@ -1,32 +1,18 @@ /* - * Copyright 2016, Google Inc. - * All rights reserved. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Copyright 2016 gRPC authors. * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -53,6 +39,7 @@ import ( "google.golang.org/grpc/credentials" "google.golang.org/grpc/metadata" "google.golang.org/grpc/peer" + "google.golang.org/grpc/status" ) // NewServerHandlerTransport returns a ServerTransport handling gRPC @@ -101,14 +88,9 @@ func NewServerHandlerTransport(w http.ResponseWriter, r *http.Request) (ServerTr continue } for _, v := range vv { - if k == "user-agent" { - // user-agent is special. Copying logic of http_util.go. - if i := strings.LastIndex(v, " "); i == -1 { - // There is no application user agent string being set - continue - } else { - v = v[:i] - } + v, err := decodeMetadataHeader(k, v) + if err != nil { + return nil, streamErrorf(codes.InvalidArgument, "malformed binary metadata: %v", err) } metakv = append(metakv, k, v) } @@ -174,15 +156,22 @@ func (a strAddr) String() string { return string(a) } // do runs fn in the ServeHTTP goroutine. func (ht *serverHandlerTransport) do(fn func()) error { + // Avoid a panic writing to closed channel. Imperfect but maybe good enough. select { - case ht.writes <- fn: - return nil case <-ht.closedCh: return ErrConnClosing + default: + select { + case ht.writes <- fn: + return nil + case <-ht.closedCh: + return ErrConnClosing + } + } } -func (ht *serverHandlerTransport) WriteStatus(s *Stream, statusCode codes.Code, statusDesc string) error { +func (ht *serverHandlerTransport) WriteStatus(s *Stream, st *status.Status) error { err := ht.do(func() { ht.writeCommonHeaders(s) @@ -192,10 +181,13 @@ func (ht *serverHandlerTransport) WriteStatus(s *Stream, statusCode codes.Code, ht.rw.(http.Flusher).Flush() h := ht.rw.Header() - h.Set("Grpc-Status", fmt.Sprintf("%d", statusCode)) - if statusDesc != "" { - h.Set("Grpc-Message", encodeGrpcMessage(statusDesc)) + h.Set("Grpc-Status", fmt.Sprintf("%d", st.Code())) + if m := st.Message(); m != "" { + h.Set("Grpc-Message", encodeGrpcMessage(m)) } + + // TODO: Support Grpc-Status-Details-Bin + if md := s.Trailer(); len(md) > 0 { for k, vv := range md { // Clients don't tolerate reading restricted headers after some non restricted ones were sent. @@ -203,10 +195,9 @@ func (ht *serverHandlerTransport) WriteStatus(s *Stream, statusCode codes.Code, continue } for _, v := range vv { - // http2 ResponseWriter mechanism to - // send undeclared Trailers after the - // headers have possibly been written. - h.Add(http2.TrailerPrefix+k, v) + // http2 ResponseWriter mechanism to send undeclared Trailers after + // the headers have possibly been written. + h.Add(http2.TrailerPrefix+k, encodeMetadataHeader(k, v)) } } } @@ -234,6 +225,7 @@ func (ht *serverHandlerTransport) writeCommonHeaders(s *Stream) { // and https://golang.org/pkg/net/http/#example_ResponseWriter_trailers h.Add("Trailer", "Grpc-Status") h.Add("Trailer", "Grpc-Message") + // TODO: Support Grpc-Status-Details-Bin if s.sendCompress != "" { h.Set("Grpc-Encoding", s.sendCompress) @@ -260,6 +252,7 @@ func (ht *serverHandlerTransport) WriteHeader(s *Stream, md metadata.MD) error { continue } for _, v := range vv { + v = encodeMetadataHeader(k, v) h.Add(k, v) } } @@ -300,13 +293,13 @@ func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), trace req := ht.req s := &Stream{ - id: 0, // irrelevant - windowHandler: func(int) {}, // nothing - cancel: cancel, - buf: newRecvBuffer(), - st: ht, - method: req.URL.Path, - recvCompress: req.Header.Get("grpc-encoding"), + id: 0, // irrelevant + requestRead: func(int) {}, + cancel: cancel, + buf: newRecvBuffer(), + st: ht, + method: req.URL.Path, + recvCompress: req.Header.Get("grpc-encoding"), } pr := &peer.Peer{ Addr: ht.RemoteAddr(), @@ -314,10 +307,13 @@ func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), trace if req.TLS != nil { pr.AuthInfo = credentials.TLSInfo{State: *req.TLS} } - ctx = metadata.NewContext(ctx, ht.headerMD) + ctx = metadata.NewIncomingContext(ctx, ht.headerMD) ctx = peer.NewContext(ctx, pr) s.ctx = newContextWithStream(ctx, s) - s.dec = &recvBufferReader{ctx: s.ctx, recv: s.buf} + s.trReader = &transportReader{ + reader: &recvBufferReader{ctx: s.ctx, recv: s.buf}, + windowHandler: func(int) {}, + } // readerDone is closed when the Body.Read-ing goroutine exits. readerDone := make(chan struct{}) @@ -329,11 +325,11 @@ func (ht *serverHandlerTransport) HandleStreams(startStream func(*Stream), trace for buf := make([]byte, readSize); ; { n, err := req.Body.Read(buf) if n > 0 { - s.buf.put(&recvMsg{data: buf[:n:n]}) + s.buf.put(recvMsg{data: buf[:n:n]}) buf = buf[n:] } if err != nil { - s.buf.put(&recvMsg{err: mapRecvMsgError(err)}) + s.buf.put(recvMsg{err: mapRecvMsgError(err)}) return } if len(buf) == 0 { diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http2_client.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http2_client.go index 892f8ba6..516ea06a 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http2_client.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http2_client.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -35,12 +20,12 @@ package transport import ( "bytes" - "fmt" "io" "math" "net" "strings" "sync" + "sync/atomic" "time" "golang.org/x/net/context" @@ -48,10 +33,11 @@ import ( "golang.org/x/net/http2/hpack" "google.golang.org/grpc/codes" "google.golang.org/grpc/credentials" - "google.golang.org/grpc/grpclog" + "google.golang.org/grpc/keepalive" "google.golang.org/grpc/metadata" "google.golang.org/grpc/peer" "google.golang.org/grpc/stats" + "google.golang.org/grpc/status" ) // http2Client implements the ClientTransport interface with HTTP2. @@ -80,6 +66,8 @@ type http2Client struct { // goAway is closed to notify the upper layer (i.e., addrConn.transportMonitor) // that the server sent GoAway on this transport. goAway chan struct{} + // awakenKeepalive is used to wake up keepalive when after it has gone dormant. + awakenKeepalive chan struct{} framer *framer hBuf *bytes.Buffer // the buffer for HPACK encoding @@ -87,7 +75,7 @@ type http2Client struct { // controlBuf delivers all the control related tasks (e.g., window // updates, reset streams, and various settings) to the controller. - controlBuf *recvBuffer + controlBuf *controlBuffer fc *inFlow // sendQuotaPool provides flow control to outbound message. sendQuotaPool *quotaPool @@ -97,10 +85,22 @@ type http2Client struct { // The scheme used: https if TLS is on, http otherwise. scheme string + isSecure bool + creds []credentials.PerRPCCredentials + // Boolean to keep track of reading activity on transport. + // 1 is true and 0 is false. + activity uint32 // Accessed atomically. + kp keepalive.ClientParameters + statsHandler stats.Handler + initialWindowSize int32 + + bdpEst *bdpEstimator + outQuotaVersion uint32 + mu sync.Mutex // guard the following variables state transportState // the state of underlying connection activeStreams map[uint32]*Stream @@ -108,10 +108,11 @@ type http2Client struct { maxStreams int // the per-stream outbound flow control window size set by the peer. streamSendQuota uint32 - // goAwayID records the Last-Stream-ID in the GoAway frame from the server. - goAwayID uint32 // prevGoAway ID records the Last-Stream-ID in the previous GOAway frame. prevGoAwayID uint32 + // goAwayReason records the http2.ErrCode and debug data received with the + // GoAway frame. + goAwayReason GoAwayReason } func dial(ctx context.Context, fn func(context.Context, string) (net.Conn, error), addr string) (net.Conn, error) { @@ -157,9 +158,9 @@ func newHTTP2Client(ctx context.Context, addr TargetInfo, opts ConnectOptions) ( conn, err := dial(ctx, opts.Dialer, addr.Addr) if err != nil { if opts.FailOnNonTempDialError { - return nil, connectionErrorf(isTemporary(err), err, "transport: %v", err) + return nil, connectionErrorf(isTemporary(err), err, "transport: error while dialing: %v", err) } - return nil, connectionErrorf(true, err, "transport: %v", err) + return nil, connectionErrorf(true, err, "transport: Error while dialing %v", err) } // Any further errors will close the underlying connection defer func(conn net.Conn) { @@ -167,7 +168,10 @@ func newHTTP2Client(ctx context.Context, addr TargetInfo, opts ConnectOptions) ( conn.Close() } }(conn) - var authInfo credentials.AuthInfo + var ( + isSecure bool + authInfo credentials.AuthInfo + ) if creds := opts.TransportCredentials; creds != nil { scheme = "https" conn, authInfo, err = creds.ClientHandshake(ctx, addr.Addr, conn) @@ -175,43 +179,72 @@ func newHTTP2Client(ctx context.Context, addr TargetInfo, opts ConnectOptions) ( // Credentials handshake errors are typically considered permanent // to avoid retrying on e.g. bad certificates. temp := isTemporary(err) - return nil, connectionErrorf(temp, err, "transport: %v", err) + return nil, connectionErrorf(temp, err, "transport: authentication handshake failed: %v", err) } + isSecure = true } - ua := primaryUA - if opts.UserAgent != "" { - ua = opts.UserAgent + " " + ua + kp := opts.KeepaliveParams + // Validate keepalive parameters. + if kp.Time == 0 { + kp.Time = defaultClientKeepaliveTime + } + if kp.Timeout == 0 { + kp.Timeout = defaultClientKeepaliveTimeout + } + dynamicWindow := true + icwz := int32(initialWindowSize) + if opts.InitialConnWindowSize >= defaultWindowSize { + icwz = opts.InitialConnWindowSize + dynamicWindow = false } var buf bytes.Buffer t := &http2Client{ ctx: ctx, target: addr.Addr, - userAgent: ua, + userAgent: opts.UserAgent, md: addr.Metadata, conn: conn, remoteAddr: conn.RemoteAddr(), localAddr: conn.LocalAddr(), authInfo: authInfo, // The client initiated stream id is odd starting from 1. - nextID: 1, - writableChan: make(chan int, 1), - shutdownChan: make(chan struct{}), - errorChan: make(chan struct{}), - goAway: make(chan struct{}), - framer: newFramer(conn), - hBuf: &buf, - hEnc: hpack.NewEncoder(&buf), - controlBuf: newRecvBuffer(), - fc: &inFlow{limit: initialConnWindowSize}, - sendQuotaPool: newQuotaPool(defaultWindowSize), - scheme: scheme, - state: reachable, - activeStreams: make(map[uint32]*Stream), - creds: opts.PerRPCCredentials, - maxStreams: math.MaxInt32, - streamSendQuota: defaultWindowSize, - statsHandler: opts.StatsHandler, + nextID: 1, + writableChan: make(chan int, 1), + shutdownChan: make(chan struct{}), + errorChan: make(chan struct{}), + goAway: make(chan struct{}), + awakenKeepalive: make(chan struct{}, 1), + framer: newFramer(conn), + hBuf: &buf, + hEnc: hpack.NewEncoder(&buf), + controlBuf: newControlBuffer(), + fc: &inFlow{limit: uint32(icwz)}, + sendQuotaPool: newQuotaPool(defaultWindowSize), + scheme: scheme, + state: reachable, + activeStreams: make(map[uint32]*Stream), + isSecure: isSecure, + creds: opts.PerRPCCredentials, + maxStreams: defaultMaxStreamsClient, + streamsQuota: newQuotaPool(defaultMaxStreamsClient), + streamSendQuota: defaultWindowSize, + kp: kp, + statsHandler: opts.StatsHandler, + initialWindowSize: initialWindowSize, + } + if opts.InitialWindowSize >= defaultWindowSize { + t.initialWindowSize = opts.InitialWindowSize + dynamicWindow = false + } + if dynamicWindow { + t.bdpEst = &bdpEstimator{ + bdp: initialWindowSize, + updateFlowControl: t.updateFlowControl, + } } + // Make sure awakenKeepalive can't be written upon. + // keepalive routine will make it writable, if need be. + t.awakenKeepalive <- struct{}{} if t.statsHandler != nil { t.ctx = t.statsHandler.TagConn(t.ctx, &stats.ConnTagInfo{ RemoteAddr: t.remoteAddr, @@ -230,32 +263,35 @@ func newHTTP2Client(ctx context.Context, addr TargetInfo, opts ConnectOptions) ( n, err := t.conn.Write(clientPreface) if err != nil { t.Close() - return nil, connectionErrorf(true, err, "transport: %v", err) + return nil, connectionErrorf(true, err, "transport: failed to write client preface: %v", err) } if n != len(clientPreface) { t.Close() return nil, connectionErrorf(true, err, "transport: preface mismatch, wrote %d bytes; want %d", n, len(clientPreface)) } - if initialWindowSize != defaultWindowSize { + if t.initialWindowSize != defaultWindowSize { err = t.framer.writeSettings(true, http2.Setting{ ID: http2.SettingInitialWindowSize, - Val: uint32(initialWindowSize), + Val: uint32(t.initialWindowSize), }) } else { err = t.framer.writeSettings(true) } if err != nil { t.Close() - return nil, connectionErrorf(true, err, "transport: %v", err) + return nil, connectionErrorf(true, err, "transport: failed to write initial settings frame: %v", err) } // Adjust the connection flow control window if needed. - if delta := uint32(initialConnWindowSize - defaultWindowSize); delta > 0 { + if delta := uint32(icwz - defaultWindowSize); delta > 0 { if err := t.framer.writeWindowUpdate(true, 0, delta); err != nil { t.Close() - return nil, connectionErrorf(true, err, "transport: %v", err) + return nil, connectionErrorf(true, err, "transport: failed to write window update: %v", err) } } go t.controller() + if t.kp.Time != infinity { + go t.keepalive() + } t.writableChan <- 0 return t, nil } @@ -269,27 +305,33 @@ func (t *http2Client) newStream(ctx context.Context, callHdr *CallHdr) *Stream { method: callHdr.Method, sendCompress: callHdr.SendCompress, buf: newRecvBuffer(), - fc: &inFlow{limit: initialWindowSize}, + fc: &inFlow{limit: uint32(t.initialWindowSize)}, sendQuotaPool: newQuotaPool(int(t.streamSendQuota)), headerChan: make(chan struct{}), } t.nextID += 2 - s.windowHandler = func(n int) { - t.updateWindow(s, uint32(n)) + s.requestRead = func(n int) { + t.adjustWindow(s, uint32(n)) } // The client side stream context should have exactly the same life cycle with the user provided context. // That means, s.ctx should be read-only. And s.ctx is done iff ctx is done. // So we use the original context here instead of creating a copy. s.ctx = ctx - s.dec = &recvBufferReader{ - ctx: s.ctx, - goAway: s.goAway, - recv: s.buf, + s.trReader = &transportReader{ + reader: &recvBufferReader{ + ctx: s.ctx, + goAway: s.goAway, + recv: s.buf, + }, + windowHandler: func(n int) { + t.updateWindow(s, uint32(n)) + }, } + return s } -// NewStream creates a stream and register it into the transport as "active" +// NewStream creates a stream and registers it into the transport as "active" // streams. func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Stream, err error) { pr := &peer.Peer{ @@ -299,10 +341,13 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea if t.authInfo != nil { pr.AuthInfo = t.authInfo } - userCtx := ctx ctx = peer.NewContext(ctx, pr) - authData := make(map[string]string) - for _, c := range t.creds { + var ( + authData = make(map[string]string) + audience string + ) + // Create an audience string only if needed. + if len(t.creds) > 0 || callHdr.Creds != nil { // Construct URI required to get auth request metadata. var port string if pos := strings.LastIndex(t.target, ":"); pos != -1 { @@ -313,17 +358,39 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea } pos := strings.LastIndex(callHdr.Method, "/") if pos == -1 { - return nil, streamErrorf(codes.InvalidArgument, "transport: malformed method name: %q", callHdr.Method) + pos = len(callHdr.Method) } - audience := "https://" + callHdr.Host + port + callHdr.Method[:pos] + audience = "https://" + callHdr.Host + port + callHdr.Method[:pos] + } + for _, c := range t.creds { data, err := c.GetRequestMetadata(ctx, audience) if err != nil { - return nil, streamErrorf(codes.InvalidArgument, "transport: %v", err) + return nil, streamErrorf(codes.Internal, "transport: %v", err) } for k, v := range data { + // Capital header names are illegal in HTTP/2. + k = strings.ToLower(k) authData[k] = v } } + callAuthData := make(map[string]string) + // Check if credentials.PerRPCCredentials were provided via call options. + // Note: if these credentials are provided both via dial options and call + // options, then both sets of credentials will be applied. + if callCreds := callHdr.Creds; callCreds != nil { + if !t.isSecure && callCreds.RequireTransportSecurity() { + return nil, streamErrorf(codes.Unauthenticated, "transport: cannot send secure credentials on an insecure conneciton") + } + data, err := callCreds.GetRequestMetadata(ctx, audience) + if err != nil { + return nil, streamErrorf(codes.Internal, "transport: %v", err) + } + for k, v := range data { + // Capital header names are illegal in HTTP/2 + k = strings.ToLower(k) + callAuthData[k] = v + } + } t.mu.Lock() if t.activeStreams == nil { t.mu.Unlock() @@ -337,21 +404,18 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea t.mu.Unlock() return nil, ErrConnClosing } - checkStreamsQuota := t.streamsQuota != nil t.mu.Unlock() - if checkStreamsQuota { - sq, err := wait(ctx, nil, nil, t.shutdownChan, t.streamsQuota.acquire()) - if err != nil { - return nil, err - } - // Returns the quota balance back. - if sq > 1 { - t.streamsQuota.add(sq - 1) - } + sq, err := wait(ctx, nil, nil, t.shutdownChan, t.streamsQuota.acquire()) + if err != nil { + return nil, err + } + // Returns the quota balance back. + if sq > 1 { + t.streamsQuota.add(sq - 1) } if _, err := wait(ctx, nil, nil, t.shutdownChan, t.writableChan); err != nil { // Return the quota back now because there is no stream returned to the caller. - if _, ok := err.(StreamError); ok && checkStreamsQuota { + if _, ok := err.(StreamError); ok { t.streamsQuota.add(1) } return nil, err @@ -359,9 +423,7 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea t.mu.Lock() if t.state == draining { t.mu.Unlock() - if checkStreamsQuota { - t.streamsQuota.add(1) - } + t.streamsQuota.add(1) // Need to make t writable again so that the rpc in flight can still proceed. t.writableChan <- 0 return nil, ErrStreamDrain @@ -371,19 +433,18 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea return nil, ErrConnClosing } s := t.newStream(ctx, callHdr) - s.clientStatsCtx = userCtx t.activeStreams[s.id] = s - - // This stream is not counted when applySetings(...) initialize t.streamsQuota. - // Reset t.streamsQuota to the right value. - var reset bool - if !checkStreamsQuota && t.streamsQuota != nil { - reset = true + // If the number of active streams change from 0 to 1, then check if keepalive + // has gone dormant. If so, wake it up. + if len(t.activeStreams) == 1 { + select { + case t.awakenKeepalive <- struct{}{}: + t.framer.writePing(false, false, [8]byte{}) + default: + } } + t.mu.Unlock() - if reset { - t.streamsQuota.add(-1) - } // HPACK encodes various headers. Note that once WriteField(...) is // called, the corresponding headers/continuation frame has to be sent @@ -407,33 +468,32 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea } for k, v := range authData { - // Capital header names are illegal in HTTP/2. - k = strings.ToLower(k) - t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: v}) + t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)}) + } + for k, v := range callAuthData { + t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)}) } var ( - hasMD bool endHeaders bool ) - if md, ok := metadata.FromContext(ctx); ok { - hasMD = true - for k, v := range md { + if md, ok := metadata.FromOutgoingContext(ctx); ok { + for k, vv := range md { // HTTP doesn't allow you to set pseudoheaders after non pseudoheaders were set. if isReservedHeader(k) { continue } - for _, entry := range v { - t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: entry}) + for _, v := range vv { + t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)}) } } } if md, ok := t.md.(*metadata.MD); ok { - for k, v := range *md { + for k, vv := range *md { if isReservedHeader(k) { continue } - for _, entry := range v { - t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: entry}) + for _, v := range vv { + t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)}) } } } @@ -448,7 +508,7 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea endHeaders = true } var flush bool - if endHeaders && (hasMD || callHdr.Flush) { + if callHdr.Flush && endHeaders { flush = true } if first { @@ -473,6 +533,10 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea return nil, connectionErrorf(true, err, "transport: %v", err) } } + s.mu.Lock() + s.bytesSent = true + s.mu.Unlock() + if t.statsHandler != nil { outHeader := &stats.OutHeader{ Client: true, @@ -482,7 +546,7 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea LocalAddr: t.localAddr, Compression: callHdr.SendCompress, } - t.statsHandler.HandleRPC(s.clientStatsCtx, outHeader) + t.statsHandler.HandleRPC(s.ctx, outHeader) } t.writableChan <- 0 return s, nil @@ -491,14 +555,14 @@ func (t *http2Client) NewStream(ctx context.Context, callHdr *CallHdr) (_ *Strea // CloseStream clears the footprint of a stream when the stream is not needed any more. // This must not be executed in reader's goroutine. func (t *http2Client) CloseStream(s *Stream, err error) { - var updateStreams bool t.mu.Lock() if t.activeStreams == nil { t.mu.Unlock() return } - if t.streamsQuota != nil { - updateStreams = true + if err != nil { + // notify in-flight streams, before the deletion + s.write(recvMsg{err: err}) } delete(t.activeStreams, s.id) if t.state == draining && len(t.activeStreams) == 0 { @@ -508,15 +572,27 @@ func (t *http2Client) CloseStream(s *Stream, err error) { return } t.mu.Unlock() - if updateStreams { - t.streamsQuota.add(1) - } - s.mu.Lock() - if q := s.fc.resetPendingData(); q > 0 { - if n := t.fc.onRead(q); n > 0 { - t.controlBuf.put(&windowUpdate{0, n}) + // rstStream is true in case the stream is being closed at the client-side + // and the server needs to be intimated about it by sending a RST_STREAM + // frame. + // To make sure this frame is written to the wire before the headers of the + // next stream waiting for streamsQuota, we add to streamsQuota pool only + // after having acquired the writableChan to send RST_STREAM out (look at + // the controller() routine). + var rstStream bool + var rstError http2.ErrCode + defer func() { + // In case, the client doesn't have to send RST_STREAM to server + // we can safely add back to streamsQuota pool now. + if !rstStream { + t.streamsQuota.add(1) + return } - } + t.controlBuf.put(&resetStream{s.id, rstError}) + }() + s.mu.Lock() + rstStream = s.rstStream + rstError = s.rstError if s.state == streamDone { s.mu.Unlock() return @@ -527,8 +603,9 @@ func (t *http2Client) CloseStream(s *Stream, err error) { } s.state = streamDone s.mu.Unlock() - if se, ok := err.(StreamError); ok && se.Code != codes.DeadlineExceeded { - t.controlBuf.put(&resetStream{s.id, http2.ErrCodeCancel}) + if _, ok := err.(StreamError); ok { + rstStream = true + rstError = http2.ErrCodeCancel } } @@ -584,24 +661,6 @@ func (t *http2Client) GracefulClose() error { t.mu.Unlock() return nil } - // Notify the streams which were initiated after the server sent GOAWAY. - select { - case <-t.goAway: - n := t.prevGoAwayID - if n == 0 && t.nextID > 1 { - n = t.nextID - 2 - } - m := t.goAwayID + 2 - if m == 2 { - m = 1 - } - for i := m; i <= n; i += 2 { - if s, ok := t.activeStreams[i]; ok { - close(s.goAway) - } - } - default: - } if t.state == draining { t.mu.Unlock() return nil @@ -621,9 +680,13 @@ func (t *http2Client) GracefulClose() error { // if it improves the performance. func (t *http2Client) Write(s *Stream, data []byte, opts *Options) error { r := bytes.NewBuffer(data) + var ( + p []byte + oqv uint32 + ) for { - var p []byte - if r.Len() > 0 { + oqv = atomic.LoadUint32(&t.outQuotaVersion) + if r.Len() > 0 || p != nil { size := http2MaxFrameLen // Wait until the stream has some quota to send the data. sq, err := wait(s.ctx, s.done, s.goAway, t.shutdownChan, s.sendQuotaPool.acquire()) @@ -641,7 +704,9 @@ func (t *http2Client) Write(s *Stream, data []byte, opts *Options) error { if tq < size { size = tq } - p = r.Next(size) + if p == nil { + p = r.Next(size) + } ps := len(p) if ps < sq { // Overbooked stream quota. Return it back. @@ -686,6 +751,18 @@ func (t *http2Client) Write(s *Stream, data []byte, opts *Options) error { return ContextErr(s.ctx.Err()) default: } + if oqv != atomic.LoadUint32(&t.outQuotaVersion) { + // InitialWindowSize settings frame must have been received after we + // acquired send quota but before we got the writable channel. + // We must forsake this write. + t.sendQuotaPool.add(len(p)) + s.sendQuotaPool.add(len(p)) + if t.framer.adjustNumWriters(-1) == 0 { + t.controlBuf.put(&flushIO{}) + } + t.writableChan <- 0 + continue + } if r.Len() == 0 && t.framer.adjustNumWriters(0) == 1 { // Do a force flush iff this is last frame for the entire gRPC message // and the caller is the only writer at this moment. @@ -698,6 +775,7 @@ func (t *http2Client) Write(s *Stream, data []byte, opts *Options) error { t.notifyError(err) return connectionErrorf(true, err, "transport: %v", err) } + p = nil if t.framer.adjustNumWriters(-1) == 0 { t.framer.flushWrite() } @@ -724,6 +802,24 @@ func (t *http2Client) getStream(f http2.Frame) (*Stream, bool) { return s, ok } +// adjustWindow sends out extra window update over the initial window size +// of stream if the application is requesting data larger in size than +// the window. +func (t *http2Client) adjustWindow(s *Stream, n uint32) { + s.mu.Lock() + defer s.mu.Unlock() + if s.state == streamDone { + return + } + if w := s.fc.maybeAdjust(n); w > 0 { + // Piggyback conneciton's window update along. + if cw := t.fc.resetPendingUpdate(); cw > 0 { + t.controlBuf.put(&windowUpdate{0, cw, false}) + } + t.controlBuf.put(&windowUpdate{s.id, w, true}) + } +} + // updateWindow adjusts the inbound quota for the stream and the transport. // Window updates will deliver to the controller for sending when // the cumulative quota exceeds the corresponding threshold. @@ -733,55 +829,98 @@ func (t *http2Client) updateWindow(s *Stream, n uint32) { if s.state == streamDone { return } - if w := t.fc.onRead(n); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } if w := s.fc.onRead(n); w > 0 { - t.controlBuf.put(&windowUpdate{s.id, w}) + if cw := t.fc.resetPendingUpdate(); cw > 0 { + t.controlBuf.put(&windowUpdate{0, cw, false}) + } + t.controlBuf.put(&windowUpdate{s.id, w, true}) } } +// updateFlowControl updates the incoming flow control windows +// for the transport and the stream based on the current bdp +// estimation. +func (t *http2Client) updateFlowControl(n uint32) { + t.mu.Lock() + for _, s := range t.activeStreams { + s.fc.newLimit(n) + } + t.initialWindowSize = int32(n) + t.mu.Unlock() + t.controlBuf.put(&windowUpdate{0, t.fc.newLimit(n), false}) + t.controlBuf.put(&settings{ + ack: false, + ss: []http2.Setting{ + { + ID: http2.SettingInitialWindowSize, + Val: uint32(n), + }, + }, + }) +} + func (t *http2Client) handleData(f *http2.DataFrame) { - size := len(f.Data()) - if err := t.fc.onData(uint32(size)); err != nil { - t.notifyError(connectionErrorf(true, err, "%v", err)) - return + size := f.Header().Length + var sendBDPPing bool + if t.bdpEst != nil { + sendBDPPing = t.bdpEst.add(uint32(size)) + } + // Decouple connection's flow control from application's read. + // An update on connection's flow control should not depend on + // whether user application has read the data or not. Such a + // restriction is already imposed on the stream's flow control, + // and therefore the sender will be blocked anyways. + // Decoupling the connection flow control will prevent other + // active(fast) streams from starving in presence of slow or + // inactive streams. + // + // Furthermore, if a bdpPing is being sent out we can piggyback + // connection's window update for the bytes we just received. + if sendBDPPing { + t.controlBuf.put(&windowUpdate{0, uint32(size), false}) + t.controlBuf.put(bdpPing) + } else { + if err := t.fc.onData(uint32(size)); err != nil { + t.notifyError(connectionErrorf(true, err, "%v", err)) + return + } + if w := t.fc.onRead(uint32(size)); w > 0 { + t.controlBuf.put(&windowUpdate{0, w, true}) + } } // Select the right stream to dispatch. s, ok := t.getStream(f) if !ok { - if w := t.fc.onRead(uint32(size)); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } return } if size > 0 { s.mu.Lock() if s.state == streamDone { s.mu.Unlock() - // The stream has been closed. Release the corresponding quota. - if w := t.fc.onRead(uint32(size)); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } return } if err := s.fc.onData(uint32(size)); err != nil { - s.state = streamDone - s.statusCode = codes.Internal - s.statusDesc = err.Error() - close(s.done) + s.rstStream = true + s.rstError = http2.ErrCodeFlowControl + s.finish(status.New(codes.Internal, err.Error())) s.mu.Unlock() s.write(recvMsg{err: io.EOF}) - t.controlBuf.put(&resetStream{s.id, http2.ErrCodeFlowControl}) return } + if f.Header().Flags.Has(http2.FlagDataPadded) { + if w := s.fc.onRead(uint32(size) - uint32(len(f.Data()))); w > 0 { + t.controlBuf.put(&windowUpdate{s.id, w, true}) + } + } s.mu.Unlock() // TODO(bradfitz, zhaoq): A copy is required here because there is no // guarantee f.Data() is consumed before the arrival of next frame. // Can this copy be eliminated? - data := make([]byte, size) - copy(data, f.Data()) - s.write(recvMsg{data: data}) + if len(f.Data()) > 0 { + data := make([]byte, len(f.Data())) + copy(data, f.Data()) + s.write(recvMsg{data: data}) + } } // The server has closed the stream without sending trailers. Record that // the read direction is closed, and set the status appropriately. @@ -791,10 +930,7 @@ func (t *http2Client) handleData(f *http2.DataFrame) { s.mu.Unlock() return } - s.state = streamDone - s.statusCode = codes.Internal - s.statusDesc = "server closed the stream without sending trailers" - close(s.done) + s.finish(status.New(codes.Internal, "server closed the stream without sending trailers")) s.mu.Unlock() s.write(recvMsg{err: io.EOF}) } @@ -810,18 +946,16 @@ func (t *http2Client) handleRSTStream(f *http2.RSTStreamFrame) { s.mu.Unlock() return } - s.state = streamDone if !s.headerDone { close(s.headerChan) s.headerDone = true } - s.statusCode, ok = http2ErrConvTab[http2.ErrCode(f.ErrCode)] + statusCode, ok := http2ErrConvTab[http2.ErrCode(f.ErrCode)] if !ok { - grpclog.Println("transport: http2Client.handleRSTStream found no mapped gRPC status for the received http2 error ", f.ErrCode) - s.statusCode = codes.Unknown + warningf("transport: http2Client.handleRSTStream found no mapped gRPC status for the received http2 error %v", f.ErrCode) + statusCode = codes.Unknown } - s.statusDesc = fmt.Sprintf("stream terminated by RST_STREAM with error code: %d", f.ErrCode) - close(s.done) + s.finish(status.Newf(statusCode, "stream terminated by RST_STREAM with error code: %d", f.ErrCode)) s.mu.Unlock() s.write(recvMsg{err: io.EOF}) } @@ -840,7 +974,11 @@ func (t *http2Client) handleSettings(f *http2.SettingsFrame) { } func (t *http2Client) handlePing(f *http2.PingFrame) { - if f.IsAck() { // Do nothing. + if f.IsAck() { + // Maybe it's a BDP ping. + if t.bdpEst != nil { + t.bdpEst.calculate(f.Data) + } return } pingAck := &ping{ack: true} @@ -850,31 +988,75 @@ func (t *http2Client) handlePing(f *http2.PingFrame) { func (t *http2Client) handleGoAway(f *http2.GoAwayFrame) { t.mu.Lock() - if t.state == reachable || t.state == draining { - if f.LastStreamID > 0 && f.LastStreamID%2 != 1 { - t.mu.Unlock() - t.notifyError(connectionErrorf(true, nil, "received illegal http2 GOAWAY frame: stream ID %d is even", f.LastStreamID)) - return - } - select { - case <-t.goAway: - id := t.goAwayID - // t.goAway has been closed (i.e.,multiple GoAways). - if id < f.LastStreamID { - t.mu.Unlock() - t.notifyError(connectionErrorf(true, nil, "received illegal http2 GOAWAY frame: previously recv GOAWAY frame with LastStramID %d, currently recv %d", id, f.LastStreamID)) - return - } - t.prevGoAwayID = id - t.goAwayID = f.LastStreamID + if t.state != reachable && t.state != draining { + t.mu.Unlock() + return + } + if f.ErrCode == http2.ErrCodeEnhanceYourCalm { + infof("Client received GoAway with http2.ErrCodeEnhanceYourCalm.") + } + id := f.LastStreamID + if id > 0 && id%2 != 1 { + t.mu.Unlock() + t.notifyError(connectionErrorf(true, nil, "received illegal http2 GOAWAY frame: stream ID %d is even", f.LastStreamID)) + return + } + // A client can recieve multiple GoAways from server (look at https://github.com/grpc/grpc-go/issues/1387). + // The idea is that the first GoAway will be sent with an ID of MaxInt32 and the second GoAway will be sent after an RTT delay + // with the ID of the last stream the server will process. + // Therefore, when we get the first GoAway we don't really close any streams. While in case of second GoAway we + // close all streams created after the second GoAwayId. This way streams that were in-flight while the GoAway from server + // was being sent don't get killed. + select { + case <-t.goAway: // t.goAway has been closed (i.e.,multiple GoAways). + // If there are multiple GoAways the first one should always have an ID greater than the following ones. + if id > t.prevGoAwayID { t.mu.Unlock() + t.notifyError(connectionErrorf(true, nil, "received illegal http2 GOAWAY frame: previously recv GOAWAY frame with LastStramID %d, currently recv %d", id, f.LastStreamID)) return - default: } - t.goAwayID = f.LastStreamID + default: + t.setGoAwayReason(f) close(t.goAway) + t.state = draining + } + // All streams with IDs greater than the GoAwayId + // and smaller than the previous GoAway ID should be killed. + upperLimit := t.prevGoAwayID + if upperLimit == 0 { // This is the first GoAway Frame. + upperLimit = math.MaxUint32 // Kill all streams after the GoAway ID. } + for streamID, stream := range t.activeStreams { + if streamID > id && streamID <= upperLimit { + close(stream.goAway) + } + } + t.prevGoAwayID = id + active := len(t.activeStreams) t.mu.Unlock() + if active == 0 { + t.Close() + } +} + +// setGoAwayReason sets the value of t.goAwayReason based +// on the GoAway frame received. +// It expects a lock on transport's mutext to be held by +// the caller. +func (t *http2Client) setGoAwayReason(f *http2.GoAwayFrame) { + t.goAwayReason = NoReason + switch f.ErrCode { + case http2.ErrCodeEnhanceYourCalm: + if string(f.DebugData()) == "too_many_pings" { + t.goAwayReason = TooManyPings + } + } +} + +func (t *http2Client) GetGoAwayReason() GoAwayReason { + t.mu.Lock() + defer t.mu.Unlock() + return t.goAwayReason } func (t *http2Client) handleWindowUpdate(f *http2.WindowUpdateFrame) { @@ -895,18 +1077,18 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) { if !ok { return } + s.mu.Lock() + s.bytesReceived = true + s.mu.Unlock() var state decodeState - for _, hf := range frame.Fields { - state.processHeaderField(hf) - } - if state.err != nil { + if err := state.decodeResponseHeader(frame); err != nil { s.mu.Lock() if !s.headerDone { close(s.headerChan) s.headerDone = true } s.mu.Unlock() - s.write(recvMsg{err: state.err}) + s.write(recvMsg{err: err}) // Something wrong. Stops reading even when there is remaining. return } @@ -920,13 +1102,13 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) { Client: true, WireLength: int(frame.Header().Length), } - t.statsHandler.HandleRPC(s.clientStatsCtx, inHeader) + t.statsHandler.HandleRPC(s.ctx, inHeader) } else { inTrailer := &stats.InTrailer{ Client: true, WireLength: int(frame.Header().Length), } - t.statsHandler.HandleRPC(s.clientStatsCtx, inTrailer) + t.statsHandler.HandleRPC(s.ctx, inTrailer) } } }() @@ -951,10 +1133,7 @@ func (t *http2Client) operateHeaders(frame *http2.MetaHeadersFrame) { if len(state.mdata) > 0 { s.trailer = state.mdata } - s.statusCode = state.statusCode - s.statusDesc = state.statusDesc - close(s.done) - s.state = streamDone + s.finish(state.status()) s.mu.Unlock() s.write(recvMsg{err: io.EOF}) } @@ -982,6 +1161,7 @@ func (t *http2Client) reader() { t.notifyError(err) return } + atomic.CompareAndSwapUint32(&t.activity, 0, 1) sf, ok := frame.(*http2.SettingsFrame) if !ok { t.notifyError(err) @@ -992,6 +1172,7 @@ func (t *http2Client) reader() { // loop to keep reading incoming messages on this transport. for { frame, err := t.framer.readFrame() + atomic.CompareAndSwapUint32(&t.activity, 0, 1) if err != nil { // Abort an active stream if the http2.Framer returns a // http2.StreamError. This can happen only if the server's response @@ -1027,7 +1208,7 @@ func (t *http2Client) reader() { case *http2.WindowUpdateFrame: t.handleWindowUpdate(frame) default: - grpclog.Printf("transport: http2Client.reader got unhandled frame type %v.", frame) + errorf("transport: http2Client.reader got unhandled frame type %v.", frame) } } } @@ -1043,24 +1224,19 @@ func (t *http2Client) applySettings(ss []http2.Setting) { s.Val = math.MaxInt32 } t.mu.Lock() - reset := t.streamsQuota != nil - if !reset { - t.streamsQuota = newQuotaPool(int(s.Val) - len(t.activeStreams)) - } ms := t.maxStreams t.maxStreams = int(s.Val) t.mu.Unlock() - if reset { - t.streamsQuota.add(int(s.Val) - ms) - } + t.streamsQuota.add(int(s.Val) - ms) case http2.SettingInitialWindowSize: t.mu.Lock() for _, stream := range t.activeStreams { // Adjust the sending quota for each stream. - stream.sendQuotaPool.add(int(s.Val - t.streamSendQuota)) + stream.sendQuotaPool.add(int(s.Val) - int(t.streamSendQuota)) } t.streamSendQuota = s.Val t.mu.Unlock() + atomic.AddUint32(&t.outQuotaVersion, 1) } } } @@ -1076,7 +1252,7 @@ func (t *http2Client) controller() { case <-t.writableChan: switch i := i.(type) { case *windowUpdate: - t.framer.writeWindowUpdate(true, i.streamID, i.increment) + t.framer.writeWindowUpdate(i.flush, i.streamID, i.increment) case *settings: if i.ack { t.framer.writeSettingsAck(true) @@ -1085,13 +1261,22 @@ func (t *http2Client) controller() { t.framer.writeSettings(true, i.ss...) } case *resetStream: + // If the server needs to be to intimated about stream closing, + // then we need to make sure the RST_STREAM frame is written to + // the wire before the headers of the next stream waiting on + // streamQuota. We ensure this by adding to the streamsQuota pool + // only after having acquired the writableChan to send RST_STREAM. + t.streamsQuota.add(1) t.framer.writeRSTStream(true, i.streamID, i.code) case *flushIO: t.framer.flushWrite() case *ping: + if !i.ack { + t.bdpEst.timesnap(i.data) + } t.framer.writePing(true, i.ack, i.data) default: - grpclog.Printf("transport: http2Client.controller got unexpected item type %v\n", i) + errorf("transport: http2Client.controller got unexpected item type %v\n", i) } t.writableChan <- 0 continue @@ -1104,6 +1289,61 @@ func (t *http2Client) controller() { } } +// keepalive running in a separate goroutune makes sure the connection is alive by sending pings. +func (t *http2Client) keepalive() { + p := &ping{data: [8]byte{}} + timer := time.NewTimer(t.kp.Time) + for { + select { + case <-timer.C: + if atomic.CompareAndSwapUint32(&t.activity, 1, 0) { + timer.Reset(t.kp.Time) + continue + } + // Check if keepalive should go dormant. + t.mu.Lock() + if len(t.activeStreams) < 1 && !t.kp.PermitWithoutStream { + // Make awakenKeepalive writable. + <-t.awakenKeepalive + t.mu.Unlock() + select { + case <-t.awakenKeepalive: + // If the control gets here a ping has been sent + // need to reset the timer with keepalive.Timeout. + case <-t.shutdownChan: + return + } + } else { + t.mu.Unlock() + // Send ping. + t.controlBuf.put(p) + } + + // By the time control gets here a ping has been sent one way or the other. + timer.Reset(t.kp.Timeout) + select { + case <-timer.C: + if atomic.CompareAndSwapUint32(&t.activity, 1, 0) { + timer.Reset(t.kp.Time) + continue + } + t.Close() + return + case <-t.shutdownChan: + if !timer.Stop() { + <-timer.C + } + return + } + case <-t.shutdownChan: + if !timer.Stop() { + <-timer.C + } + return + } + } +} + func (t *http2Client) Error() <-chan struct{} { return t.errorChan } @@ -1123,7 +1363,7 @@ func (t *http2Client) notifyError(err error) { if t.state == reachable { t.state = unreachable close(t.errorChan) - grpclog.Printf("transport: http2Client.notifyError got notified that the client transport was broken %v.", err) + infof("transport: http2Client.notifyError got notified that the client transport was broken %v.", err) } t.mu.Unlock() } diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http2_server.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http2_server.go index a095dd0e..b6f93e3c 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http2_server.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http2_server.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -38,19 +23,24 @@ import ( "errors" "io" "math" + "math/rand" "net" "strconv" "sync" + "sync/atomic" + "time" + "github.com/golang/protobuf/proto" "golang.org/x/net/context" "golang.org/x/net/http2" "golang.org/x/net/http2/hpack" "google.golang.org/grpc/codes" "google.golang.org/grpc/credentials" - "google.golang.org/grpc/grpclog" + "google.golang.org/grpc/keepalive" "google.golang.org/grpc/metadata" "google.golang.org/grpc/peer" "google.golang.org/grpc/stats" + "google.golang.org/grpc/status" "google.golang.org/grpc/tap" ) @@ -78,23 +68,54 @@ type http2Server struct { framer *framer hBuf *bytes.Buffer // the buffer for HPACK encoding hEnc *hpack.Encoder // HPACK encoder - // The max number of concurrent streams. maxStreams uint32 // controlBuf delivers all the control related tasks (e.g., window // updates, reset streams, and various settings) to the controller. - controlBuf *recvBuffer + controlBuf *controlBuffer fc *inFlow // sendQuotaPool provides flow control to outbound message. sendQuotaPool *quotaPool + stats stats.Handler + // Flag to keep track of reading activity on transport. + // 1 is true and 0 is false. + activity uint32 // Accessed atomically. + // Keepalive and max-age parameters for the server. + kp keepalive.ServerParameters + + // Keepalive enforcement policy. + kep keepalive.EnforcementPolicy + // The time instance last ping was received. + lastPingAt time.Time + // Number of times the client has violated keepalive ping policy so far. + pingStrikes uint8 + // Flag to signify that number of ping strikes should be reset to 0. + // This is set whenever data or header frames are sent. + // 1 means yes. + resetPingStrikes uint32 // Accessed atomically. + initialWindowSize int32 + bdpEst *bdpEstimator - stats stats.Handler + outQuotaVersion uint32 - mu sync.Mutex // guard the following + mu sync.Mutex // guard the following + + // drainChan is initialized when drain(...) is called the first time. + // After which the server writes out the first GoAway(with ID 2^31-1) frame. + // Then an independent goroutine will be launched to later send the second GoAway. + // During this time we don't want to write another first GoAway(with ID 2^31 -1) frame. + // Thus call to drain(...) will be a no-op if drainChan is already initialized since draining is + // already underway. + drainChan chan struct{} state transportState activeStreams map[uint32]*Stream // the per-stream outbound flow control window size set by the peer. streamSendQuota uint32 + // idle is the time instant when the connection went idle. + // This is either the begining of the connection or when the number of + // RPCs go down to 0. + // When the connection is busy, this value is set to 0. + idle time.Time } // newHTTP2Server constructs a ServerTransport based on HTTP2. ConnectionError is @@ -102,53 +123,96 @@ type http2Server struct { func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err error) { framer := newFramer(conn) // Send initial settings as connection preface to client. - var settings []http2.Setting + var isettings []http2.Setting // TODO(zhaoq): Have a better way to signal "no limit" because 0 is // permitted in the HTTP2 spec. maxStreams := config.MaxStreams if maxStreams == 0 { maxStreams = math.MaxUint32 } else { - settings = append(settings, http2.Setting{ + isettings = append(isettings, http2.Setting{ ID: http2.SettingMaxConcurrentStreams, Val: maxStreams, }) } - if initialWindowSize != defaultWindowSize { - settings = append(settings, http2.Setting{ + dynamicWindow := true + iwz := int32(initialWindowSize) + if config.InitialWindowSize >= defaultWindowSize { + iwz = config.InitialWindowSize + dynamicWindow = false + } + icwz := int32(initialWindowSize) + if config.InitialConnWindowSize >= defaultWindowSize { + icwz = config.InitialConnWindowSize + dynamicWindow = false + } + if iwz != defaultWindowSize { + isettings = append(isettings, http2.Setting{ ID: http2.SettingInitialWindowSize, - Val: uint32(initialWindowSize)}) + Val: uint32(iwz)}) } - if err := framer.writeSettings(true, settings...); err != nil { + if err := framer.writeSettings(true, isettings...); err != nil { return nil, connectionErrorf(true, err, "transport: %v", err) } // Adjust the connection flow control window if needed. - if delta := uint32(initialConnWindowSize - defaultWindowSize); delta > 0 { + if delta := uint32(icwz - defaultWindowSize); delta > 0 { if err := framer.writeWindowUpdate(true, 0, delta); err != nil { return nil, connectionErrorf(true, err, "transport: %v", err) } } + kp := config.KeepaliveParams + if kp.MaxConnectionIdle == 0 { + kp.MaxConnectionIdle = defaultMaxConnectionIdle + } + if kp.MaxConnectionAge == 0 { + kp.MaxConnectionAge = defaultMaxConnectionAge + } + // Add a jitter to MaxConnectionAge. + kp.MaxConnectionAge += getJitter(kp.MaxConnectionAge) + if kp.MaxConnectionAgeGrace == 0 { + kp.MaxConnectionAgeGrace = defaultMaxConnectionAgeGrace + } + if kp.Time == 0 { + kp.Time = defaultServerKeepaliveTime + } + if kp.Timeout == 0 { + kp.Timeout = defaultServerKeepaliveTimeout + } + kep := config.KeepalivePolicy + if kep.MinTime == 0 { + kep.MinTime = defaultKeepalivePolicyMinTime + } var buf bytes.Buffer t := &http2Server{ - ctx: context.Background(), - conn: conn, - remoteAddr: conn.RemoteAddr(), - localAddr: conn.LocalAddr(), - authInfo: config.AuthInfo, - framer: framer, - hBuf: &buf, - hEnc: hpack.NewEncoder(&buf), - maxStreams: maxStreams, - inTapHandle: config.InTapHandle, - controlBuf: newRecvBuffer(), - fc: &inFlow{limit: initialConnWindowSize}, - sendQuotaPool: newQuotaPool(defaultWindowSize), - state: reachable, - writableChan: make(chan int, 1), - shutdownChan: make(chan struct{}), - activeStreams: make(map[uint32]*Stream), - streamSendQuota: defaultWindowSize, - stats: config.StatsHandler, + ctx: context.Background(), + conn: conn, + remoteAddr: conn.RemoteAddr(), + localAddr: conn.LocalAddr(), + authInfo: config.AuthInfo, + framer: framer, + hBuf: &buf, + hEnc: hpack.NewEncoder(&buf), + maxStreams: maxStreams, + inTapHandle: config.InTapHandle, + controlBuf: newControlBuffer(), + fc: &inFlow{limit: uint32(icwz)}, + sendQuotaPool: newQuotaPool(defaultWindowSize), + state: reachable, + writableChan: make(chan int, 1), + shutdownChan: make(chan struct{}), + activeStreams: make(map[uint32]*Stream), + streamSendQuota: defaultWindowSize, + stats: config.StatsHandler, + kp: kp, + idle: time.Now(), + kep: kep, + initialWindowSize: iwz, + } + if dynamicWindow { + t.bdpEst = &bdpEstimator{ + bdp: initialWindowSize, + updateFlowControl: t.updateFlowControl, + } } if t.stats != nil { t.ctx = t.stats.TagConn(t.ctx, &stats.ConnTagInfo{ @@ -159,6 +223,7 @@ func newHTTP2Server(conn net.Conn, config *ServerConfig) (_ ServerTransport, err t.stats.HandleConn(t.ctx, connBegin) } go t.controller() + go t.keepalive() t.writableChan <- 0 return t, nil } @@ -170,18 +235,17 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func( id: frame.Header().StreamID, st: t, buf: buf, - fc: &inFlow{limit: initialWindowSize}, + fc: &inFlow{limit: uint32(t.initialWindowSize)}, } var state decodeState for _, hf := range frame.Fields { - state.processHeaderField(hf) - } - if err := state.err; err != nil { - if se, ok := err.(StreamError); ok { - t.controlBuf.put(&resetStream{s.id, statusCodeConvTab[se.Code]}) + if err := state.processHeaderField(hf); err != nil { + if se, ok := err.(StreamError); ok { + t.controlBuf.put(&resetStream{s.id, statusCodeConvTab[se.Code]}) + } + return } - return } if frame.StreamEnded() { @@ -208,12 +272,16 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func( s.ctx = newContextWithStream(s.ctx, s) // Attach the received metadata to the context. if len(state.mdata) > 0 { - s.ctx = metadata.NewContext(s.ctx, state.mdata) + s.ctx = metadata.NewIncomingContext(s.ctx, state.mdata) } - - s.dec = &recvBufferReader{ - ctx: s.ctx, - recv: s.buf, + s.trReader = &transportReader{ + reader: &recvBufferReader{ + ctx: s.ctx, + recv: s.buf, + }, + windowHandler: func(n int) { + t.updateWindow(s, uint32(n)) + }, } s.recvCompress = state.encoding s.method = state.method @@ -224,7 +292,7 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func( } s.ctx, err = t.inTapHandle(s.ctx, info) if err != nil { - // TODO: Log the real error. + warningf("transport: http2Server.operateHeaders got an error from InTapHandle: %v", err) t.controlBuf.put(&resetStream{s.id, http2.ErrCodeRefusedStream}) return } @@ -242,15 +310,18 @@ func (t *http2Server) operateHeaders(frame *http2.MetaHeadersFrame, handle func( if s.id%2 != 1 || s.id <= t.maxStreamID { t.mu.Unlock() // illegal gRPC stream id. - grpclog.Println("transport: http2Server.HandleStreams received an illegal stream id: ", s.id) + errorf("transport: http2Server.HandleStreams received an illegal stream id: %v", s.id) return true } t.maxStreamID = s.id s.sendQuotaPool = newQuotaPool(int(t.streamSendQuota)) t.activeStreams[s.id] = s + if len(t.activeStreams) == 1 { + t.idle = time.Time{} + } t.mu.Unlock() - s.windowHandler = func(n int) { - t.updateWindow(s, uint32(n)) + s.requestRead = func(n int) { + t.adjustWindow(s, uint32(n)) } s.ctx = traceCtx(s.ctx, s.method) if t.stats != nil { @@ -275,12 +346,15 @@ func (t *http2Server) HandleStreams(handle func(*Stream), traceCtx func(context. // Check the validity of client preface. preface := make([]byte, len(clientPreface)) if _, err := io.ReadFull(t.conn, preface); err != nil { - grpclog.Printf("transport: http2Server.HandleStreams failed to receive the preface from client: %v", err) + // Only log if it isn't a simple tcp accept check (ie: tcp balancer doing open/close socket) + if err != io.EOF { + errorf("transport: http2Server.HandleStreams failed to receive the preface from client: %v", err) + } t.Close() return } if !bytes.Equal(preface, clientPreface) { - grpclog.Printf("transport: http2Server.HandleStreams received bogus greeting from client: %q", preface) + errorf("transport: http2Server.HandleStreams received bogus greeting from client: %q", preface) t.Close() return } @@ -291,13 +365,14 @@ func (t *http2Server) HandleStreams(handle func(*Stream), traceCtx func(context. return } if err != nil { - grpclog.Printf("transport: http2Server.HandleStreams failed to read frame: %v", err) + errorf("transport: http2Server.HandleStreams failed to read initial settings frame: %v", err) t.Close() return } + atomic.StoreUint32(&t.activity, 1) sf, ok := frame.(*http2.SettingsFrame) if !ok { - grpclog.Printf("transport: http2Server.HandleStreams saw invalid preface type %T from client", frame) + errorf("transport: http2Server.HandleStreams saw invalid preface type %T from client", frame) t.Close() return } @@ -305,6 +380,7 @@ func (t *http2Server) HandleStreams(handle func(*Stream), traceCtx func(context. for { frame, err := t.framer.readFrame() + atomic.StoreUint32(&t.activity, 1) if err != nil { if se, ok := err.(http2.StreamError); ok { t.mu.Lock() @@ -320,7 +396,7 @@ func (t *http2Server) HandleStreams(handle func(*Stream), traceCtx func(context. t.Close() return } - grpclog.Printf("transport: http2Server.HandleStreams failed to read frame: %v", err) + warningf("transport: http2Server.HandleStreams failed to read frame: %v", err) t.Close() return } @@ -343,7 +419,7 @@ func (t *http2Server) HandleStreams(handle func(*Stream), traceCtx func(context. case *http2.GoAwayFrame: // TODO: Handle GoAway from the client appropriately. default: - grpclog.Printf("transport: http2Server.HandleStreams found unhandled frame type %v.", frame) + errorf("transport: http2Server.HandleStreams found unhandled frame type %v.", frame) } } } @@ -363,6 +439,23 @@ func (t *http2Server) getStream(f http2.Frame) (*Stream, bool) { return s, true } +// adjustWindow sends out extra window update over the initial window size +// of stream if the application is requesting data larger in size than +// the window. +func (t *http2Server) adjustWindow(s *Stream, n uint32) { + s.mu.Lock() + defer s.mu.Unlock() + if s.state == streamDone { + return + } + if w := s.fc.maybeAdjust(n); w > 0 { + if cw := t.fc.resetPendingUpdate(); cw > 0 { + t.controlBuf.put(&windowUpdate{0, cw, false}) + } + t.controlBuf.put(&windowUpdate{s.id, w, true}) + } +} + // updateWindow adjusts the inbound quota for the stream and the transport. // Window updates will deliver to the controller for sending when // the cumulative quota exceeds the corresponding threshold. @@ -372,37 +465,76 @@ func (t *http2Server) updateWindow(s *Stream, n uint32) { if s.state == streamDone { return } - if w := t.fc.onRead(n); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } if w := s.fc.onRead(n); w > 0 { - t.controlBuf.put(&windowUpdate{s.id, w}) + if cw := t.fc.resetPendingUpdate(); cw > 0 { + t.controlBuf.put(&windowUpdate{0, cw, false}) + } + t.controlBuf.put(&windowUpdate{s.id, w, true}) } } +// updateFlowControl updates the incoming flow control windows +// for the transport and the stream based on the current bdp +// estimation. +func (t *http2Server) updateFlowControl(n uint32) { + t.mu.Lock() + for _, s := range t.activeStreams { + s.fc.newLimit(n) + } + t.initialWindowSize = int32(n) + t.mu.Unlock() + t.controlBuf.put(&windowUpdate{0, t.fc.newLimit(n), false}) + t.controlBuf.put(&settings{ + ack: false, + ss: []http2.Setting{ + { + ID: http2.SettingInitialWindowSize, + Val: uint32(n), + }, + }, + }) + +} + func (t *http2Server) handleData(f *http2.DataFrame) { - size := len(f.Data()) - if err := t.fc.onData(uint32(size)); err != nil { - grpclog.Printf("transport: http2Server %v", err) - t.Close() - return + size := f.Header().Length + var sendBDPPing bool + if t.bdpEst != nil { + sendBDPPing = t.bdpEst.add(uint32(size)) + } + // Decouple connection's flow control from application's read. + // An update on connection's flow control should not depend on + // whether user application has read the data or not. Such a + // restriction is already imposed on the stream's flow control, + // and therefore the sender will be blocked anyways. + // Decoupling the connection flow control will prevent other + // active(fast) streams from starving in presence of slow or + // inactive streams. + // + // Furthermore, if a bdpPing is being sent out we can piggyback + // connection's window update for the bytes we just received. + if sendBDPPing { + t.controlBuf.put(&windowUpdate{0, uint32(size), false}) + t.controlBuf.put(bdpPing) + } else { + if err := t.fc.onData(uint32(size)); err != nil { + errorf("transport: http2Server %v", err) + t.Close() + return + } + if w := t.fc.onRead(uint32(size)); w > 0 { + t.controlBuf.put(&windowUpdate{0, w, true}) + } } // Select the right stream to dispatch. s, ok := t.getStream(f) if !ok { - if w := t.fc.onRead(uint32(size)); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } return } if size > 0 { s.mu.Lock() if s.state == streamDone { s.mu.Unlock() - // The stream has been closed. Release the corresponding quota. - if w := t.fc.onRead(uint32(size)); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } return } if err := s.fc.onData(uint32(size)); err != nil { @@ -411,13 +543,20 @@ func (t *http2Server) handleData(f *http2.DataFrame) { t.controlBuf.put(&resetStream{s.id, http2.ErrCodeFlowControl}) return } + if f.Header().Flags.Has(http2.FlagDataPadded) { + if w := s.fc.onRead(uint32(size) - uint32(len(f.Data()))); w > 0 { + t.controlBuf.put(&windowUpdate{s.id, w, true}) + } + } s.mu.Unlock() // TODO(bradfitz, zhaoq): A copy is required here because there is no // guarantee f.Data() is consumed before the arrival of next frame. // Can this copy be eliminated? - data := make([]byte, size) - copy(data, f.Data()) - s.write(recvMsg{data: data}) + if len(f.Data()) > 0 { + data := make([]byte, len(f.Data())) + copy(data, f.Data()) + s.write(recvMsg{data: data}) + } } if f.Header().Flags.Has(http2.FlagDataEndStream) { // Received the end of stream from the client. @@ -451,13 +590,58 @@ func (t *http2Server) handleSettings(f *http2.SettingsFrame) { t.controlBuf.put(&settings{ack: true, ss: ss}) } +const ( + maxPingStrikes = 2 + defaultPingTimeout = 2 * time.Hour +) + func (t *http2Server) handlePing(f *http2.PingFrame) { - if f.IsAck() { // Do nothing. + if f.IsAck() { + if f.Data == goAwayPing.data && t.drainChan != nil { + close(t.drainChan) + return + } + // Maybe it's a BDP ping. + if t.bdpEst != nil { + t.bdpEst.calculate(f.Data) + } return } pingAck := &ping{ack: true} copy(pingAck.data[:], f.Data[:]) t.controlBuf.put(pingAck) + + now := time.Now() + defer func() { + t.lastPingAt = now + }() + // A reset ping strikes means that we don't need to check for policy + // violation for this ping and the pingStrikes counter should be set + // to 0. + if atomic.CompareAndSwapUint32(&t.resetPingStrikes, 1, 0) { + t.pingStrikes = 0 + return + } + t.mu.Lock() + ns := len(t.activeStreams) + t.mu.Unlock() + if ns < 1 && !t.kep.PermitWithoutStream { + // Keepalive shouldn't be active thus, this new ping should + // have come after atleast defaultPingTimeout. + if t.lastPingAt.Add(defaultPingTimeout).After(now) { + t.pingStrikes++ + } + } else { + // Check if keepalive policy is respected. + if t.lastPingAt.Add(t.kep.MinTime).After(now) { + t.pingStrikes++ + } + } + + if t.pingStrikes > maxPingStrikes { + // Send goaway and close the connection. + t.controlBuf.put(&goAway{code: http2.ErrCodeEnhanceYourCalm, debugData: []byte("too_many_pings"), closeConn: true}) + } } func (t *http2Server) handleWindowUpdate(f *http2.WindowUpdateFrame) { @@ -476,6 +660,13 @@ func (t *http2Server) writeHeaders(s *Stream, b *bytes.Buffer, endStream bool) e first := true endHeaders := false var err error + defer func() { + if err == nil { + // Reset ping strikes when seding headers since that might cause the + // peer to send ping. + atomic.StoreUint32(&t.resetPingStrikes, 1) + } + }() // Sends the headers in a single batch. for !endHeaders { size := t.hBuf.Len() @@ -530,13 +721,13 @@ func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error { if s.sendCompress != "" { t.hEnc.WriteField(hpack.HeaderField{Name: "grpc-encoding", Value: s.sendCompress}) } - for k, v := range md { + for k, vv := range md { if isReservedHeader(k) { // Clients don't tolerate reading restricted headers after some non restricted ones were sent. continue } - for _, entry := range v { - t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: entry}) + for _, v := range vv { + t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)}) } } bufLen := t.hBuf.Len() @@ -557,7 +748,7 @@ func (t *http2Server) WriteHeader(s *Stream, md metadata.MD) error { // There is no further I/O operations being able to perform on this stream. // TODO(zhaoq): Now it indicates the end of entire stream. Revisit if early // OK is adopted. -func (t *http2Server) WriteStatus(s *Stream, statusCode codes.Code, statusDesc string) error { +func (t *http2Server) WriteStatus(s *Stream, st *status.Status) error { var headersSent, hasHeader bool s.mu.Lock() if s.state == streamDone { @@ -588,17 +779,28 @@ func (t *http2Server) WriteStatus(s *Stream, statusCode codes.Code, statusDesc s t.hEnc.WriteField( hpack.HeaderField{ Name: "grpc-status", - Value: strconv.Itoa(int(statusCode)), + Value: strconv.Itoa(int(st.Code())), }) - t.hEnc.WriteField(hpack.HeaderField{Name: "grpc-message", Value: encodeGrpcMessage(statusDesc)}) + t.hEnc.WriteField(hpack.HeaderField{Name: "grpc-message", Value: encodeGrpcMessage(st.Message())}) + + if p := st.Proto(); p != nil && len(p.Details) > 0 { + stBytes, err := proto.Marshal(p) + if err != nil { + // TODO: return error instead, when callers are able to handle it. + panic(err) + } + + t.hEnc.WriteField(hpack.HeaderField{Name: "grpc-status-details-bin", Value: encodeBinHeader(stBytes)}) + } + // Attach the trailer metadata. - for k, v := range s.trailer { + for k, vv := range s.trailer { // Clients don't tolerate reading restricted headers after some non restricted ones were sent. if isReservedHeader(k) { continue } - for _, entry := range v { - t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: entry}) + for _, v := range vv { + t.hEnc.WriteField(hpack.HeaderField{Name: k, Value: encodeMetadataHeader(k, v)}) } } bufLen := t.hBuf.Len() @@ -619,7 +821,7 @@ func (t *http2Server) WriteStatus(s *Stream, statusCode codes.Code, statusDesc s // Write converts the data into HTTP2 data frame and sends it out. Non-nil error // is returns if it fails (e.g., framing error, transport error). -func (t *http2Server) Write(s *Stream, data []byte, opts *Options) error { +func (t *http2Server) Write(s *Stream, data []byte, opts *Options) (err error) { // TODO(zhaoq): Support multi-writers for a single stream. var writeHeaderFrame bool s.mu.Lock() @@ -635,10 +837,15 @@ func (t *http2Server) Write(s *Stream, data []byte, opts *Options) error { t.WriteHeader(s, nil) } r := bytes.NewBuffer(data) + var ( + p []byte + oqv uint32 + ) for { - if r.Len() == 0 { + if r.Len() == 0 && p == nil { return nil } + oqv = atomic.LoadUint32(&t.outQuotaVersion) size := http2MaxFrameLen // Wait until the stream has some quota to send the data. sq, err := wait(s.ctx, nil, nil, t.shutdownChan, s.sendQuotaPool.acquire()) @@ -656,7 +863,9 @@ func (t *http2Server) Write(s *Stream, data []byte, opts *Options) error { if tq < size { size = tq } - p := r.Next(size) + if p == nil { + p = r.Next(size) + } ps := len(p) if ps < sq { // Overbooked stream quota. Return it back. @@ -693,14 +902,30 @@ func (t *http2Server) Write(s *Stream, data []byte, opts *Options) error { return ContextErr(s.ctx.Err()) default: } + if oqv != atomic.LoadUint32(&t.outQuotaVersion) { + // InitialWindowSize settings frame must have been received after we + // acquired send quota but before we got the writable channel. + // We must forsake this write. + t.sendQuotaPool.add(ps) + s.sendQuotaPool.add(ps) + if t.framer.adjustNumWriters(-1) == 0 { + t.controlBuf.put(&flushIO{}) + } + t.writableChan <- 0 + continue + } var forceFlush bool if r.Len() == 0 && t.framer.adjustNumWriters(0) == 1 && !opts.Last { forceFlush = true } + // Reset ping strikes when sending data since this might cause + // the peer to send ping. + atomic.StoreUint32(&t.resetPingStrikes, 1) if err := t.framer.writeData(forceFlush, s.id, false, p); err != nil { t.Close() return connectionErrorf(true, err, "transport: %v", err) } + p = nil if t.framer.adjustNumWriters(-1) == 0 { t.framer.flushWrite() } @@ -715,14 +940,97 @@ func (t *http2Server) applySettings(ss []http2.Setting) { t.mu.Lock() defer t.mu.Unlock() for _, stream := range t.activeStreams { - stream.sendQuotaPool.add(int(s.Val - t.streamSendQuota)) + stream.sendQuotaPool.add(int(s.Val) - int(t.streamSendQuota)) } t.streamSendQuota = s.Val + atomic.AddUint32(&t.outQuotaVersion, 1) } } } +// keepalive running in a separate goroutine does the following: +// 1. Gracefully closes an idle connection after a duration of keepalive.MaxConnectionIdle. +// 2. Gracefully closes any connection after a duration of keepalive.MaxConnectionAge. +// 3. Forcibly closes a connection after an additive period of keepalive.MaxConnectionAgeGrace over keepalive.MaxConnectionAge. +// 4. Makes sure a connection is alive by sending pings with a frequency of keepalive.Time and closes a non-responsive connection +// after an additional duration of keepalive.Timeout. +func (t *http2Server) keepalive() { + p := &ping{} + var pingSent bool + maxIdle := time.NewTimer(t.kp.MaxConnectionIdle) + maxAge := time.NewTimer(t.kp.MaxConnectionAge) + keepalive := time.NewTimer(t.kp.Time) + // NOTE: All exit paths of this function should reset their + // respecitve timers. A failure to do so will cause the + // following clean-up to deadlock and eventually leak. + defer func() { + if !maxIdle.Stop() { + <-maxIdle.C + } + if !maxAge.Stop() { + <-maxAge.C + } + if !keepalive.Stop() { + <-keepalive.C + } + }() + for { + select { + case <-maxIdle.C: + t.mu.Lock() + idle := t.idle + if idle.IsZero() { // The connection is non-idle. + t.mu.Unlock() + maxIdle.Reset(t.kp.MaxConnectionIdle) + continue + } + val := t.kp.MaxConnectionIdle - time.Since(idle) + t.mu.Unlock() + if val <= 0 { + // The connection has been idle for a duration of keepalive.MaxConnectionIdle or more. + // Gracefully close the connection. + t.drain(http2.ErrCodeNo, []byte{}) + // Reseting the timer so that the clean-up doesn't deadlock. + maxIdle.Reset(infinity) + return + } + maxIdle.Reset(val) + case <-maxAge.C: + t.drain(http2.ErrCodeNo, []byte{}) + maxAge.Reset(t.kp.MaxConnectionAgeGrace) + select { + case <-maxAge.C: + // Close the connection after grace period. + t.Close() + // Reseting the timer so that the clean-up doesn't deadlock. + maxAge.Reset(infinity) + case <-t.shutdownChan: + } + return + case <-keepalive.C: + if atomic.CompareAndSwapUint32(&t.activity, 1, 0) { + pingSent = false + keepalive.Reset(t.kp.Time) + continue + } + if pingSent { + t.Close() + // Reseting the timer so that the clean-up doesn't deadlock. + keepalive.Reset(infinity) + return + } + pingSent = true + t.controlBuf.put(p) + keepalive.Reset(t.kp.Timeout) + case <-t.shutdownChan: + return + } + } +} + +var goAwayPing = &ping{data: [8]byte{1, 6, 1, 8, 0, 3, 3, 9}} + // controller running in a separate goroutine takes charge of sending control // frames (e.g., window update, reset stream, setting, etc.) to the server. func (t *http2Server) controller() { @@ -734,7 +1042,7 @@ func (t *http2Server) controller() { case <-t.writableChan: switch i := i.(type) { case *windowUpdate: - t.framer.writeWindowUpdate(true, i.streamID, i.increment) + t.framer.writeWindowUpdate(i.flush, i.streamID, i.increment) case *settings: if i.ack { t.framer.writeSettingsAck(true) @@ -752,15 +1060,47 @@ func (t *http2Server) controller() { return } sid := t.maxStreamID - t.state = draining + if !i.headsUp { + // Stop accepting more streams now. + t.state = draining + t.mu.Unlock() + t.framer.writeGoAway(true, sid, i.code, i.debugData) + if i.closeConn { + // Abruptly close the connection following the GoAway. + t.Close() + } + t.writableChan <- 0 + continue + } t.mu.Unlock() - t.framer.writeGoAway(true, sid, http2.ErrCodeNo, nil) + // For a graceful close, send out a GoAway with stream ID of MaxUInt32, + // Follow that with a ping and wait for the ack to come back or a timer + // to expire. During this time accept new streams since they might have + // originated before the GoAway reaches the client. + // After getting the ack or timer expiration send out another GoAway this + // time with an ID of the max stream server intends to process. + t.framer.writeGoAway(true, math.MaxUint32, http2.ErrCodeNo, []byte{}) + t.framer.writePing(true, false, goAwayPing.data) + go func() { + timer := time.NewTimer(time.Minute) + defer timer.Stop() + select { + case <-t.drainChan: + case <-timer.C: + case <-t.shutdownChan: + return + } + t.controlBuf.put(&goAway{code: i.code, debugData: i.debugData}) + }() case *flushIO: t.framer.flushWrite() case *ping: + if !i.ack { + t.bdpEst.timesnap(i.data) + } t.framer.writePing(true, i.ack, i.data) default: - grpclog.Printf("transport: http2Server.controller got unexpected item type %v\n", i) + errorf("transport: http2Server.controller got unexpected item type %v\n", i) } t.writableChan <- 0 continue @@ -804,6 +1144,9 @@ func (t *http2Server) Close() (err error) { func (t *http2Server) closeStream(s *Stream) { t.mu.Lock() delete(t.activeStreams, s.id) + if len(t.activeStreams) == 0 { + t.idle = time.Now() + } if t.state == draining && len(t.activeStreams) == 0 { defer t.Close() } @@ -813,11 +1156,6 @@ func (t *http2Server) closeStream(s *Stream) { // called to interrupt the potential blocking on other goroutines. s.cancel() s.mu.Lock() - if q := s.fc.resetPendingData(); q > 0 { - if w := t.fc.onRead(q); w > 0 { - t.controlBuf.put(&windowUpdate{0, w}) - } - } if s.state == streamDone { s.mu.Unlock() return @@ -831,5 +1169,27 @@ func (t *http2Server) RemoteAddr() net.Addr { } func (t *http2Server) Drain() { - t.controlBuf.put(&goAway{}) + t.drain(http2.ErrCodeNo, []byte{}) +} + +func (t *http2Server) drain(code http2.ErrCode, debugData []byte) { + t.mu.Lock() + defer t.mu.Unlock() + if t.drainChan != nil { + return + } + t.drainChan = make(chan struct{}) + t.controlBuf.put(&goAway{code: code, debugData: debugData, headsUp: true}) +} + +var rgen = rand.New(rand.NewSource(time.Now().UnixNano())) + +func getJitter(v time.Duration) time.Duration { + if v == infinity { + return 0 + } + // Generate a jitter between +/- 10% of the value. + r := int64(v / 10) + j := rgen.Int63n(2*r) - r + return time.Duration(j) } diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http_util.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http_util.go index a3c68d4c..685c6fbf 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http_util.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/http_util.go @@ -1,33 +1,18 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ @@ -36,24 +21,25 @@ package transport import ( "bufio" "bytes" + "encoding/base64" "fmt" "io" "net" + "net/http" "strconv" "strings" "sync/atomic" "time" + "github.com/golang/protobuf/proto" "golang.org/x/net/http2" "golang.org/x/net/http2/hpack" + spb "google.golang.org/genproto/googleapis/rpc/status" "google.golang.org/grpc/codes" - "google.golang.org/grpc/grpclog" - "google.golang.org/grpc/metadata" + "google.golang.org/grpc/status" ) const ( - // The primary user agent - primaryUA = "grpc-go/1.0" // http2MaxFrameLen specifies the max length of a HTTP2 frame. http2MaxFrameLen = 16384 // 16KB frame // http://http2.github.io/http2-spec/#SettingValues @@ -87,18 +73,39 @@ var ( codes.ResourceExhausted: http2.ErrCodeEnhanceYourCalm, codes.PermissionDenied: http2.ErrCodeInadequateSecurity, } + httpStatusConvTab = map[int]codes.Code{ + // 400 Bad Request - INTERNAL. + http.StatusBadRequest: codes.Internal, + // 401 Unauthorized - UNAUTHENTICATED. + http.StatusUnauthorized: codes.Unauthenticated, + // 403 Forbidden - PERMISSION_DENIED. + http.StatusForbidden: codes.PermissionDenied, + // 404 Not Found - UNIMPLEMENTED. + http.StatusNotFound: codes.Unimplemented, + // 429 Too Many Requests - UNAVAILABLE. + http.StatusTooManyRequests: codes.Unavailable, + // 502 Bad Gateway - UNAVAILABLE. + http.StatusBadGateway: codes.Unavailable, + // 503 Service Unavailable - UNAVAILABLE. + http.StatusServiceUnavailable: codes.Unavailable, + // 504 Gateway timeout - UNAVAILABLE. + http.StatusGatewayTimeout: codes.Unavailable, + } ) // Records the states during HPACK decoding. Must be reset once the // decoding of the entire headers are finished. type decodeState struct { - err error // first error encountered decoding - encoding string - // statusCode caches the stream status received from the trailer - // the server sent. Client side only. - statusCode codes.Code - statusDesc string + // statusGen caches the stream status received from the trailer the server + // sent. Client side only. Do not access directly. After all trailers are + // parsed, use the status method to retrieve the status. + statusGen *status.Status + // rawStatusCode and rawStatusMsg are set from the raw trailer fields and are not + // intended for direct access outside of parsing. + rawStatusCode *int + rawStatusMsg string + httpStatus *int // Server side only fields. timeoutSet bool timeout time.Duration @@ -121,6 +128,7 @@ func isReservedHeader(hdr string) bool { "grpc-message", "grpc-status", "grpc-timeout", + "grpc-status-details-bin", "te": return true default: @@ -139,12 +147,6 @@ func isWhitelistedPseudoHeader(hdr string) bool { } } -func (d *decodeState) setErr(err error) { - if d.err == nil { - d.err = err - } -} - func validContentType(t string) bool { e := "application/grpc" if !strings.HasPrefix(t, e) { @@ -158,56 +160,135 @@ func validContentType(t string) bool { return true } -func (d *decodeState) processHeaderField(f hpack.HeaderField) { +func (d *decodeState) status() *status.Status { + if d.statusGen == nil { + // No status-details were provided; generate status using code/msg. + d.statusGen = status.New(codes.Code(int32(*(d.rawStatusCode))), d.rawStatusMsg) + } + return d.statusGen +} + +const binHdrSuffix = "-bin" + +func encodeBinHeader(v []byte) string { + return base64.RawStdEncoding.EncodeToString(v) +} + +func decodeBinHeader(v string) ([]byte, error) { + if len(v)%4 == 0 { + // Input was padded, or padding was not necessary. + return base64.StdEncoding.DecodeString(v) + } + return base64.RawStdEncoding.DecodeString(v) +} + +func encodeMetadataHeader(k, v string) string { + if strings.HasSuffix(k, binHdrSuffix) { + return encodeBinHeader(([]byte)(v)) + } + return v +} + +func decodeMetadataHeader(k, v string) (string, error) { + if strings.HasSuffix(k, binHdrSuffix) { + b, err := decodeBinHeader(v) + return string(b), err + } + return v, nil +} + +func (d *decodeState) decodeResponseHeader(frame *http2.MetaHeadersFrame) error { + for _, hf := range frame.Fields { + if err := d.processHeaderField(hf); err != nil { + return err + } + } + + // If grpc status exists, no need to check further. + if d.rawStatusCode != nil || d.statusGen != nil { + return nil + } + + // If grpc status doesn't exist and http status doesn't exist, + // then it's a malformed header. + if d.httpStatus == nil { + return streamErrorf(codes.Internal, "malformed header: doesn't contain status(gRPC or HTTP)") + } + + if *(d.httpStatus) != http.StatusOK { + code, ok := httpStatusConvTab[*(d.httpStatus)] + if !ok { + code = codes.Unknown + } + return streamErrorf(code, http.StatusText(*(d.httpStatus))) + } + + // gRPC status doesn't exist and http status is OK. + // Set rawStatusCode to be unknown and return nil error. + // So that, if the stream has ended this Unknown status + // will be propogated to the user. + // Otherwise, it will be ignored. In which case, status from + // a later trailer, that has StreamEnded flag set, is propogated. + code := int(codes.Unknown) + d.rawStatusCode = &code + return nil + +} + +func (d *decodeState) processHeaderField(f hpack.HeaderField) error { switch f.Name { case "content-type": if !validContentType(f.Value) { - d.setErr(streamErrorf(codes.FailedPrecondition, "transport: received the unexpected content-type %q", f.Value)) - return + return streamErrorf(codes.FailedPrecondition, "transport: received the unexpected content-type %q", f.Value) } case "grpc-encoding": d.encoding = f.Value case "grpc-status": code, err := strconv.Atoi(f.Value) if err != nil { - d.setErr(streamErrorf(codes.Internal, "transport: malformed grpc-status: %v", err)) - return + return streamErrorf(codes.Internal, "transport: malformed grpc-status: %v", err) } - d.statusCode = codes.Code(code) + d.rawStatusCode = &code case "grpc-message": - d.statusDesc = decodeGrpcMessage(f.Value) + d.rawStatusMsg = decodeGrpcMessage(f.Value) + case "grpc-status-details-bin": + v, err := decodeBinHeader(f.Value) + if err != nil { + return streamErrorf(codes.Internal, "transport: malformed grpc-status-details-bin: %v", err) + } + s := &spb.Status{} + if err := proto.Unmarshal(v, s); err != nil { + return streamErrorf(codes.Internal, "transport: malformed grpc-status-details-bin: %v", err) + } + d.statusGen = status.FromProto(s) case "grpc-timeout": d.timeoutSet = true var err error - d.timeout, err = decodeTimeout(f.Value) - if err != nil { - d.setErr(streamErrorf(codes.Internal, "transport: malformed time-out: %v", err)) - return + if d.timeout, err = decodeTimeout(f.Value); err != nil { + return streamErrorf(codes.Internal, "transport: malformed time-out: %v", err) } case ":path": d.method = f.Value + case ":status": + code, err := strconv.Atoi(f.Value) + if err != nil { + return streamErrorf(codes.Internal, "transport: malformed http-status: %v", err) + } + d.httpStatus = &code default: if !isReservedHeader(f.Name) || isWhitelistedPseudoHeader(f.Name) { - if f.Name == "user-agent" { - i := strings.LastIndex(f.Value, " ") - if i == -1 { - // There is no application user agent string being set. - return - } - // Extract the application user agent string. - f.Value = f.Value[:i] - } if d.mdata == nil { d.mdata = make(map[string][]string) } - k, v, err := metadata.DecodeKeyValue(f.Name, f.Value) + v, err := decodeMetadataHeader(f.Name, f.Value) if err != nil { - grpclog.Printf("Failed to decode (%q, %q): %v", f.Name, f.Value, err) - return + errorf("Failed to decode metadata header (%q, %q): %v", f.Name, f.Value, err) + return nil } - d.mdata[k] = append(d.mdata[k], v) + d.mdata[f.Name] = append(d.mdata[f.Name], v) } } + return nil } type timeoutUnit uint8 @@ -379,6 +460,9 @@ func newFramer(conn net.Conn) *framer { writer: bufio.NewWriterSize(conn, http2IOBufSize), } f.fr = http2.NewFramer(f.writer, f.reader) + // Opt-in to Frame reuse API on framer to reduce garbage. + // Frames aren't safe to read from after a subsequent call to ReadFrame. + f.fr.SetReuseFrames() f.fr.ReadMetaHeaders = hpack.NewDecoder(http2InitHeaderTableSize, nil) return f } diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/log.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/log.go new file mode 100644 index 00000000..ac8e358c --- /dev/null +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/log.go @@ -0,0 +1,50 @@ +/* + * + * Copyright 2017 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +// This file contains wrappers for grpclog functions. +// The transport package only logs to verbose level 2 by default. + +package transport + +import "google.golang.org/grpc/grpclog" + +const logLevel = 2 + +func infof(format string, args ...interface{}) { + if grpclog.V(logLevel) { + grpclog.Infof(format, args...) + } +} + +func warningf(format string, args ...interface{}) { + if grpclog.V(logLevel) { + grpclog.Warningf(format, args...) + } +} + +func errorf(format string, args ...interface{}) { + if grpclog.V(logLevel) { + grpclog.Errorf(format, args...) + } +} + +func fatalf(format string, args ...interface{}) { + if grpclog.V(logLevel) { + grpclog.Fatalf(format, args...) + } +} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/pre_go16.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/pre_go16.go deleted file mode 100644 index 33d91c17..00000000 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/pre_go16.go +++ /dev/null @@ -1,51 +0,0 @@ -// +build !go1.6 - -/* - * Copyright 2016, Google Inc. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -package transport - -import ( - "net" - "time" - - "golang.org/x/net/context" -) - -// dialContext connects to the address on the named network. -func dialContext(ctx context.Context, network, address string) (net.Conn, error) { - var dialer net.Dialer - if deadline, ok := ctx.Deadline(); ok { - dialer.Timeout = deadline.Sub(time.Now()) - } - return dialer.Dial(network, address) -} diff --git a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/transport.go b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/transport.go index d4659918..ec0fe678 100644 --- a/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/transport.go +++ b/vendor/github.com/hashicorp/terraform/vendor/google.golang.org/grpc/transport/transport.go @@ -1,54 +1,39 @@ /* * - * Copyright 2014, Google Inc. - * All rights reserved. + * Copyright 2014 gRPC authors. * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. * */ -/* -Package transport defines and implements message oriented communication channel -to complete various transactions (e.g., an RPC). -*/ +// Package transport defines and implements message oriented communication +// channel to complete various transactions (e.g., an RPC). package transport // import "google.golang.org/grpc/transport" import ( - "bytes" "fmt" "io" "net" "sync" "golang.org/x/net/context" + "golang.org/x/net/http2" "google.golang.org/grpc/codes" "google.golang.org/grpc/credentials" + "google.golang.org/grpc/keepalive" "google.golang.org/grpc/metadata" "google.golang.org/grpc/stats" + "google.golang.org/grpc/status" "google.golang.org/grpc/tap" ) @@ -62,28 +47,25 @@ type recvMsg struct { err error } -func (*recvMsg) item() {} - -// All items in an out of a recvBuffer should be the same type. -type item interface { - item() -} - -// recvBuffer is an unbounded channel of item. +// recvBuffer is an unbounded channel of recvMsg structs. +// Note recvBuffer differs from controlBuffer only in that recvBuffer +// holds a channel of only recvMsg structs instead of objects implementing "item" interface. +// recvBuffer is written to much more often than +// controlBuffer and using strict recvMsg structs helps avoid allocation in "recvBuffer.put" type recvBuffer struct { - c chan item + c chan recvMsg mu sync.Mutex - backlog []item + backlog []recvMsg } func newRecvBuffer() *recvBuffer { b := &recvBuffer{ - c: make(chan item, 1), + c: make(chan recvMsg, 1), } return b } -func (b *recvBuffer) put(r item) { +func (b *recvBuffer) put(r recvMsg) { b.mu.Lock() defer b.mu.Unlock() if len(b.backlog) == 0 { @@ -102,17 +84,18 @@ func (b *recvBuffer) load() { if len(b.backlog) > 0 { select { case b.c <- b.backlog[0]: + b.backlog[0] = recvMsg{} b.backlog = b.backlog[1:] default: } } } -// get returns the channel that receives an item in the buffer. +// get returns the channel that receives a recvMsg in the buffer. // -// Upon receipt of an item, the caller should call load to send another -// item onto the channel if there is any. -func (b *recvBuffer) get() <-chan item { +// Upon receipt of a recvMsg, the caller should call load to send another +// recvMsg onto the channel if there is any. +func (b *recvBuffer) get() <-chan recvMsg { return b.c } @@ -122,7 +105,7 @@ type recvBufferReader struct { ctx context.Context goAway chan struct{} recv *recvBuffer - last *bytes.Reader // Stores the remaining data in the previous calls. + last []byte // Stores the remaining data in the previous calls. err error } @@ -133,27 +116,86 @@ func (r *recvBufferReader) Read(p []byte) (n int, err error) { if r.err != nil { return 0, r.err } - defer func() { r.err = err }() - if r.last != nil && r.last.Len() > 0 { + n, r.err = r.read(p) + return n, r.err +} + +func (r *recvBufferReader) read(p []byte) (n int, err error) { + if r.last != nil && len(r.last) > 0 { // Read remaining data left in last call. - return r.last.Read(p) + copied := copy(p, r.last) + r.last = r.last[copied:] + return copied, nil } select { case <-r.ctx.Done(): return 0, ContextErr(r.ctx.Err()) case <-r.goAway: return 0, ErrStreamDrain - case i := <-r.recv.get(): + case m := <-r.recv.get(): r.recv.load() - m := i.(*recvMsg) if m.err != nil { return 0, m.err } - r.last = bytes.NewReader(m.data) - return r.last.Read(p) + copied := copy(p, m.data) + r.last = m.data[copied:] + return copied, nil + } +} + +// All items in an out of a controlBuffer should be the same type. +type item interface { + item() +} + +// controlBuffer is an unbounded channel of item. +type controlBuffer struct { + c chan item + mu sync.Mutex + backlog []item +} + +func newControlBuffer() *controlBuffer { + b := &controlBuffer{ + c: make(chan item, 1), + } + return b +} + +func (b *controlBuffer) put(r item) { + b.mu.Lock() + defer b.mu.Unlock() + if len(b.backlog) == 0 { + select { + case b.c <- r: + return + default: + } + } + b.backlog = append(b.backlog, r) +} + +func (b *controlBuffer) load() { + b.mu.Lock() + defer b.mu.Unlock() + if len(b.backlog) > 0 { + select { + case b.c <- b.backlog[0]: + b.backlog[0] = nil + b.backlog = b.backlog[1:] + default: + } } } +// get returns the channel that receives an item in the buffer. +// +// Upon receipt of an item, the caller should call load to send another +// item onto the channel if there is any. +func (b *controlBuffer) get() <-chan item { + return b.c +} + type streamState uint8 const ( @@ -168,11 +210,6 @@ type Stream struct { id uint32 // nil for client side Stream. st ServerTransport - // clientStatsCtx keeps the user context for stats handling. - // It's only valid on client side. Server side stats context is same as s.ctx. - // All client side stats collection should use the clientStatsCtx (instead of the stream context) - // so that all the generated stats for a particular RPC can be associated in the processing phase. - clientStatsCtx context.Context // ctx is the associated context of the stream. ctx context.Context // cancel is always nil for client side Stream. @@ -186,14 +223,17 @@ type Stream struct { recvCompress string sendCompress string buf *recvBuffer - dec io.Reader + trReader io.Reader fc *inFlow recvQuota uint32 + + // TODO: Remote this unused variable. // The accumulated inbound quota pending for window update. updateQuota uint32 - // The handler to control the window update procedure for both this - // particular stream and the associated transport. - windowHandler func(int) + + // Callback to state application's intentions to read data. This + // is used to adjust flow control, if need be. + requestRead func(int) sendQuotaPool *quotaPool // Close headerChan to indicate the end of reception of header metadata. @@ -210,9 +250,17 @@ type Stream struct { // true iff headerChan is closed. Used to avoid closing headerChan // multiple times. headerDone bool - // the status received from the server. - statusCode codes.Code - statusDesc string + // the status error received from the server. + status *status.Status + // rstStream indicates whether a RST_STREAM frame needs to be sent + // to the server to signify that this stream is closing. + rstStream bool + // rstError is the error that needs to be sent along with the RST_STREAM frame. + rstError http2.ErrCode + // bytesSent and bytesReceived indicates whether any bytes have been sent or + // received on this stream. + bytesSent bool + bytesReceived bool } // RecvCompress returns the compression algorithm applied to the inbound @@ -240,16 +288,24 @@ func (s *Stream) GoAway() <-chan struct{} { // Header acquires the key-value pairs of header metadata once it // is available. It blocks until i) the metadata is ready or ii) there is no -// header metadata or iii) the stream is cancelled/expired. +// header metadata or iii) the stream is canceled/expired. func (s *Stream) Header() (metadata.MD, error) { + var err error select { case <-s.ctx.Done(): - return nil, ContextErr(s.ctx.Err()) + err = ContextErr(s.ctx.Err()) case <-s.goAway: - return nil, ErrStreamDrain + err = ErrStreamDrain + case <-s.headerChan: + return s.header.Copy(), nil + } + // Even if the stream is closed, header is returned if available. + select { case <-s.headerChan: return s.header.Copy(), nil + default: } + return nil, err } // Trailer returns the cached trailer metedata. Note that if it is not called @@ -277,14 +333,9 @@ func (s *Stream) Method() string { return s.method } -// StatusCode returns statusCode received from the server. -func (s *Stream) StatusCode() codes.Code { - return s.statusCode -} - -// StatusDesc returns statusDesc received from the server. -func (s *Stream) StatusDesc() string { - return s.statusDesc +// Status returns the status received from the server. +func (s *Stream) Status() *status.Status { + return s.status } // SetHeader sets the header metadata. This can be called multiple times. @@ -315,22 +366,69 @@ func (s *Stream) SetTrailer(md metadata.MD) error { } func (s *Stream) write(m recvMsg) { - s.buf.put(&m) + s.buf.put(m) } -// Read reads all the data available for this Stream from the transport and +// Read reads all p bytes from the wire for this stream. +func (s *Stream) Read(p []byte) (n int, err error) { + // Don't request a read if there was an error earlier + if er := s.trReader.(*transportReader).er; er != nil { + return 0, er + } + s.requestRead(len(p)) + return io.ReadFull(s.trReader, p) +} + +// tranportReader reads all the data available for this Stream from the transport and // passes them into the decoder, which converts them into a gRPC message stream. // The error is io.EOF when the stream is done or another non-nil error if // the stream broke. -func (s *Stream) Read(p []byte) (n int, err error) { - n, err = s.dec.Read(p) +type transportReader struct { + reader io.Reader + // The handler to control the window update procedure for both this + // particular stream and the associated transport. + windowHandler func(int) + er error +} + +func (t *transportReader) Read(p []byte) (n int, err error) { + n, err = t.reader.Read(p) if err != nil { + t.er = err return } - s.windowHandler(n) + t.windowHandler(n) return } +// finish sets the stream's state and status, and closes the done channel. +// s.mu must be held by the caller. st must always be non-nil. +func (s *Stream) finish(st *status.Status) { + s.status = st + s.state = streamDone + close(s.done) +} + +// BytesSent indicates whether any bytes have been sent on this stream. +func (s *Stream) BytesSent() bool { + s.mu.Lock() + defer s.mu.Unlock() + return s.bytesSent +} + +// BytesReceived indicates whether any bytes have been received on this stream. +func (s *Stream) BytesReceived() bool { + s.mu.Lock() + defer s.mu.Unlock() + return s.bytesReceived +} + +// GoString is implemented by Stream so context.String() won't +// race when printing %#v. +func (s *Stream) GoString() string { + return fmt.Sprintf("<stream: %p, %v>", s, s.method) +} + // The key to save transport.Stream in the context. type streamKey struct{} @@ -358,10 +456,14 @@ const ( // ServerConfig consists of all the configurations to establish a server transport. type ServerConfig struct { - MaxStreams uint32 - AuthInfo credentials.AuthInfo - InTapHandle tap.ServerInHandle - StatsHandler stats.Handler + MaxStreams uint32 + AuthInfo credentials.AuthInfo + InTapHandle tap.ServerInHandle + StatsHandler stats.Handler + KeepaliveParams keepalive.ServerParameters + KeepalivePolicy keepalive.EnforcementPolicy + InitialWindowSize int32 + InitialConnWindowSize int32 } // NewServerTransport creates a ServerTransport with conn or non-nil error @@ -374,6 +476,9 @@ func NewServerTransport(protocol string, conn net.Conn, config *ServerConfig) (S type ConnectOptions struct { // UserAgent is the application user agent. UserAgent string + // Authority is the :authority pseudo-header to use. This field has no effect if + // TransportCredentials is set. + Authority string // Dialer specifies how to dial a network address. Dialer func(context.Context, string) (net.Conn, error) // FailOnNonTempDialError specifies if gRPC fails on non-temporary dial errors. @@ -382,8 +487,14 @@ type ConnectOptions struct { PerRPCCredentials []credentials.PerRPCCredentials // TransportCredentials stores the Authenticator required to setup a client connection. TransportCredentials credentials.TransportCredentials + // KeepaliveParams stores the keepalive parameters. + KeepaliveParams keepalive.ClientParameters // StatsHandler stores the handler for stats. StatsHandler stats.Handler + // InitialWindowSize sets the intial window size for a stream. + InitialWindowSize int32 + // InitialConnWindowSize sets the intial window size for a connection. + InitialConnWindowSize int32 } // TargetInfo contains the information of the target such as network address and metadata. @@ -427,10 +538,15 @@ type CallHdr struct { // outbound message. SendCompress string + // Creds specifies credentials.PerRPCCredentials for a call. + Creds credentials.PerRPCCredentials + // Flush indicates whether a new stream command should be sent // to the peer without waiting for the first data. This is - // only a hint. The transport may modify the flush decision + // only a hint. + // If it's true, the transport may modify the flush decision // for performance purposes. + // If it's false, new stream will never be flushed. Flush bool } @@ -466,10 +582,13 @@ type ClientTransport interface { // once the transport is initiated. Error() <-chan struct{} - // GoAway returns a channel that is closed when ClientTranspor + // GoAway returns a channel that is closed when ClientTransport // receives the draining signal from the server (e.g., GOAWAY frame in // HTTP/2). GoAway() <-chan struct{} + + // GetGoAwayReason returns the reason why GoAway frame was received. + GetGoAwayReason() GoAwayReason } // ServerTransport is the common interface for all gRPC server-side transport @@ -489,10 +608,9 @@ type ServerTransport interface { // Write may not be called on all streams. Write(s *Stream, data []byte, opts *Options) error - // WriteStatus sends the status of a stream to the client. - // WriteStatus is the final call made on a stream and always - // occurs. - WriteStatus(s *Stream, statusCode codes.Code, statusDesc string) error + // WriteStatus sends the status of a stream to the client. WriteStatus is + // the final call made on a stream and always occurs. + WriteStatus(s *Stream, st *status.Status) error // Close tears down the transport. Once it is called, the transport // should not be accessed any more. All the pending streams and their @@ -558,6 +676,8 @@ var ( ErrStreamDrain = streamErrorf(codes.Unavailable, "the server stops accepting new RPCs") ) +// TODO: See if we can replace StreamError with status package errors. + // StreamError is an error that only affects one stream within a connection. type StreamError struct { Code codes.Code @@ -565,18 +685,7 @@ type StreamError struct { } func (e StreamError) Error() string { - return fmt.Sprintf("stream error: code = %d desc = %q", e.Code, e.Desc) -} - -// ContextErr converts the error from context package into a StreamError. -func ContextErr(err error) StreamError { - switch err { - case context.DeadlineExceeded: - return streamErrorf(codes.DeadlineExceeded, "%v", err) - case context.Canceled: - return streamErrorf(codes.Canceled, "%v", err) - } - panic(fmt.Sprintf("Unexpected error from context packet: %v", err)) + return fmt.Sprintf("stream error: code = %s desc = %q", e.Code, e.Desc) } // wait blocks until it can receive from ctx.Done, closing, or proceed. @@ -606,3 +715,16 @@ func wait(ctx context.Context, done, goAway, closing <-chan struct{}, proceed <- return i, nil } } + +// GoAwayReason contains the reason for the GoAway frame received. +type GoAwayReason uint8 + +const ( + // Invalid indicates that no GoAway frame is received. + Invalid GoAwayReason = 0 + // NoReason is the default value when GoAway frame is received. + NoReason GoAwayReason = 1 + // TooManyPings indicates that a GoAway frame with ErrCodeEnhanceYourCalm + // was recieved and that the debug data said "too_many_pings". + TooManyPings GoAwayReason = 2 +) |