diff options
Diffstat (limited to 'vendor/github.com/aws/aws-sdk-go/aws/request')
15 files changed, 1975 insertions, 0 deletions
diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/connection_reset_error.go b/vendor/github.com/aws/aws-sdk-go/aws/request/connection_reset_error.go new file mode 100644 index 00000000..10fc8cb2 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/connection_reset_error.go @@ -0,0 +1,19 @@ +// +build !appengine + +package request + +import ( + "net" + "os" + "syscall" +) + +func isErrConnectionReset(err error) bool { + if opErr, ok := err.(*net.OpError); ok { + if sysErr, ok := opErr.Err.(*os.SyscallError); ok { + return sysErr.Err == syscall.ECONNRESET + } + } + + return false +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/connection_reset_error_appengine.go b/vendor/github.com/aws/aws-sdk-go/aws/request/connection_reset_error_appengine.go new file mode 100644 index 00000000..996196e7 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/connection_reset_error_appengine.go @@ -0,0 +1,11 @@ +// +build appengine + +package request + +import ( + "strings" +) + +func isErrConnectionReset(err error) bool { + return strings.Contains(err.Error(), "connection reset") +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/handlers.go b/vendor/github.com/aws/aws-sdk-go/aws/request/handlers.go new file mode 100644 index 00000000..6c14336f --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/handlers.go @@ -0,0 +1,225 @@ +package request + +import ( + "fmt" + "strings" +) + +// A Handlers provides a collection of request handlers for various +// stages of handling requests. +type Handlers struct { + Validate HandlerList + Build HandlerList + Sign HandlerList + Send HandlerList + ValidateResponse HandlerList + Unmarshal HandlerList + UnmarshalMeta HandlerList + UnmarshalError HandlerList + Retry HandlerList + AfterRetry HandlerList + Complete HandlerList +} + +// Copy returns of this handler's lists. +func (h *Handlers) Copy() Handlers { + return Handlers{ + Validate: h.Validate.copy(), + Build: h.Build.copy(), + Sign: h.Sign.copy(), + Send: h.Send.copy(), + ValidateResponse: h.ValidateResponse.copy(), + Unmarshal: h.Unmarshal.copy(), + UnmarshalError: h.UnmarshalError.copy(), + UnmarshalMeta: h.UnmarshalMeta.copy(), + Retry: h.Retry.copy(), + AfterRetry: h.AfterRetry.copy(), + Complete: h.Complete.copy(), + } +} + +// Clear removes callback functions for all handlers +func (h *Handlers) Clear() { + h.Validate.Clear() + h.Build.Clear() + h.Send.Clear() + h.Sign.Clear() + h.Unmarshal.Clear() + h.UnmarshalMeta.Clear() + h.UnmarshalError.Clear() + h.ValidateResponse.Clear() + h.Retry.Clear() + h.AfterRetry.Clear() + h.Complete.Clear() +} + +// A HandlerListRunItem represents an entry in the HandlerList which +// is being run. +type HandlerListRunItem struct { + Index int + Handler NamedHandler + Request *Request +} + +// A HandlerList manages zero or more handlers in a list. +type HandlerList struct { + list []NamedHandler + + // Called after each request handler in the list is called. If set + // and the func returns true the HandlerList will continue to iterate + // over the request handlers. If false is returned the HandlerList + // will stop iterating. + // + // Should be used if extra logic to be performed between each handler + // in the list. This can be used to terminate a list's iteration + // based on a condition such as error like, HandlerListStopOnError. + // Or for logging like HandlerListLogItem. + AfterEachFn func(item HandlerListRunItem) bool +} + +// A NamedHandler is a struct that contains a name and function callback. +type NamedHandler struct { + Name string + Fn func(*Request) +} + +// copy creates a copy of the handler list. +func (l *HandlerList) copy() HandlerList { + n := HandlerList{ + AfterEachFn: l.AfterEachFn, + } + if len(l.list) == 0 { + return n + } + + n.list = append(make([]NamedHandler, 0, len(l.list)), l.list...) + return n +} + +// Clear clears the handler list. +func (l *HandlerList) Clear() { + l.list = l.list[0:0] +} + +// Len returns the number of handlers in the list. +func (l *HandlerList) Len() int { + return len(l.list) +} + +// PushBack pushes handler f to the back of the handler list. +func (l *HandlerList) PushBack(f func(*Request)) { + l.PushBackNamed(NamedHandler{"__anonymous", f}) +} + +// PushBackNamed pushes named handler f to the back of the handler list. +func (l *HandlerList) PushBackNamed(n NamedHandler) { + if cap(l.list) == 0 { + l.list = make([]NamedHandler, 0, 5) + } + l.list = append(l.list, n) +} + +// PushFront pushes handler f to the front of the handler list. +func (l *HandlerList) PushFront(f func(*Request)) { + l.PushFrontNamed(NamedHandler{"__anonymous", f}) +} + +// PushFrontNamed pushes named handler f to the front of the handler list. +func (l *HandlerList) PushFrontNamed(n NamedHandler) { + if cap(l.list) == len(l.list) { + // Allocating new list required + l.list = append([]NamedHandler{n}, l.list...) + } else { + // Enough room to prepend into list. + l.list = append(l.list, NamedHandler{}) + copy(l.list[1:], l.list) + l.list[0] = n + } +} + +// Remove removes a NamedHandler n +func (l *HandlerList) Remove(n NamedHandler) { + l.RemoveByName(n.Name) +} + +// RemoveByName removes a NamedHandler by name. +func (l *HandlerList) RemoveByName(name string) { + for i := 0; i < len(l.list); i++ { + m := l.list[i] + if m.Name == name { + // Shift array preventing creating new arrays + copy(l.list[i:], l.list[i+1:]) + l.list[len(l.list)-1] = NamedHandler{} + l.list = l.list[:len(l.list)-1] + + // decrement list so next check to length is correct + i-- + } + } +} + +// Run executes all handlers in the list with a given request object. +func (l *HandlerList) Run(r *Request) { + for i, h := range l.list { + h.Fn(r) + item := HandlerListRunItem{ + Index: i, Handler: h, Request: r, + } + if l.AfterEachFn != nil && !l.AfterEachFn(item) { + return + } + } +} + +// HandlerListLogItem logs the request handler and the state of the +// request's Error value. Always returns true to continue iterating +// request handlers in a HandlerList. +func HandlerListLogItem(item HandlerListRunItem) bool { + if item.Request.Config.Logger == nil { + return true + } + item.Request.Config.Logger.Log("DEBUG: RequestHandler", + item.Index, item.Handler.Name, item.Request.Error) + + return true +} + +// HandlerListStopOnError returns false to stop the HandlerList iterating +// over request handlers if Request.Error is not nil. True otherwise +// to continue iterating. +func HandlerListStopOnError(item HandlerListRunItem) bool { + return item.Request.Error == nil +} + +// WithAppendUserAgent will add a string to the user agent prefixed with a +// single white space. +func WithAppendUserAgent(s string) Option { + return func(r *Request) { + r.Handlers.Build.PushBack(func(r2 *Request) { + AddToUserAgent(r, s) + }) + } +} + +// MakeAddToUserAgentHandler will add the name/version pair to the User-Agent request +// header. If the extra parameters are provided they will be added as metadata to the +// name/version pair resulting in the following format. +// "name/version (extra0; extra1; ...)" +// The user agent part will be concatenated with this current request's user agent string. +func MakeAddToUserAgentHandler(name, version string, extra ...string) func(*Request) { + ua := fmt.Sprintf("%s/%s", name, version) + if len(extra) > 0 { + ua += fmt.Sprintf(" (%s)", strings.Join(extra, "; ")) + } + return func(r *Request) { + AddToUserAgent(r, ua) + } +} + +// MakeAddToUserAgentFreeFormHandler adds the input to the User-Agent request header. +// The input string will be concatenated with the current request's user agent string. +func MakeAddToUserAgentFreeFormHandler(s string) func(*Request) { + return func(r *Request) { + AddToUserAgent(r, s) + } +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/http_request.go b/vendor/github.com/aws/aws-sdk-go/aws/request/http_request.go new file mode 100644 index 00000000..79f79602 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/http_request.go @@ -0,0 +1,24 @@ +package request + +import ( + "io" + "net/http" + "net/url" +) + +func copyHTTPRequest(r *http.Request, body io.ReadCloser) *http.Request { + req := new(http.Request) + *req = *r + req.URL = &url.URL{} + *req.URL = *r.URL + req.Body = body + + req.Header = http.Header{} + for k, v := range r.Header { + for _, vv := range v { + req.Header.Add(k, vv) + } + } + + return req +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/offset_reader.go b/vendor/github.com/aws/aws-sdk-go/aws/request/offset_reader.go new file mode 100644 index 00000000..02f07f4a --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/offset_reader.go @@ -0,0 +1,58 @@ +package request + +import ( + "io" + "sync" +) + +// offsetReader is a thread-safe io.ReadCloser to prevent racing +// with retrying requests +type offsetReader struct { + buf io.ReadSeeker + lock sync.Mutex + closed bool +} + +func newOffsetReader(buf io.ReadSeeker, offset int64) *offsetReader { + reader := &offsetReader{} + buf.Seek(offset, 0) + + reader.buf = buf + return reader +} + +// Close will close the instance of the offset reader's access to +// the underlying io.ReadSeeker. +func (o *offsetReader) Close() error { + o.lock.Lock() + defer o.lock.Unlock() + o.closed = true + return nil +} + +// Read is a thread-safe read of the underlying io.ReadSeeker +func (o *offsetReader) Read(p []byte) (int, error) { + o.lock.Lock() + defer o.lock.Unlock() + + if o.closed { + return 0, io.EOF + } + + return o.buf.Read(p) +} + +// Seek is a thread-safe seeking operation. +func (o *offsetReader) Seek(offset int64, whence int) (int64, error) { + o.lock.Lock() + defer o.lock.Unlock() + + return o.buf.Seek(offset, whence) +} + +// CloseAndCopy will return a new offsetReader with a copy of the old buffer +// and close the old buffer. +func (o *offsetReader) CloseAndCopy(offset int64) *offsetReader { + o.Close() + return newOffsetReader(o.buf, offset) +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/request.go b/vendor/github.com/aws/aws-sdk-go/aws/request/request.go new file mode 100644 index 00000000..4f4f1123 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/request.go @@ -0,0 +1,575 @@ +package request + +import ( + "bytes" + "fmt" + "io" + "net" + "net/http" + "net/url" + "reflect" + "strings" + "time" + + "github.com/aws/aws-sdk-go/aws" + "github.com/aws/aws-sdk-go/aws/awserr" + "github.com/aws/aws-sdk-go/aws/client/metadata" +) + +const ( + // ErrCodeSerialization is the serialization error code that is received + // during protocol unmarshaling. + ErrCodeSerialization = "SerializationError" + + // ErrCodeRead is an error that is returned during HTTP reads. + ErrCodeRead = "ReadError" + + // ErrCodeResponseTimeout is the connection timeout error that is recieved + // during body reads. + ErrCodeResponseTimeout = "ResponseTimeout" + + // CanceledErrorCode is the error code that will be returned by an + // API request that was canceled. Requests given a aws.Context may + // return this error when canceled. + CanceledErrorCode = "RequestCanceled" +) + +// A Request is the service request to be made. +type Request struct { + Config aws.Config + ClientInfo metadata.ClientInfo + Handlers Handlers + + Retryer + Time time.Time + ExpireTime time.Duration + Operation *Operation + HTTPRequest *http.Request + HTTPResponse *http.Response + Body io.ReadSeeker + BodyStart int64 // offset from beginning of Body that the request body starts + Params interface{} + Error error + Data interface{} + RequestID string + RetryCount int + Retryable *bool + RetryDelay time.Duration + NotHoist bool + SignedHeaderVals http.Header + LastSignedAt time.Time + DisableFollowRedirects bool + + context aws.Context + + built bool + + // Need to persist an intermediate body between the input Body and HTTP + // request body because the HTTP Client's transport can maintain a reference + // to the HTTP request's body after the client has returned. This value is + // safe to use concurrently and wrap the input Body for each HTTP request. + safeBody *offsetReader +} + +// An Operation is the service API operation to be made. +type Operation struct { + Name string + HTTPMethod string + HTTPPath string + *Paginator + + BeforePresignFn func(r *Request) error +} + +// New returns a new Request pointer for the service API +// operation and parameters. +// +// Params is any value of input parameters to be the request payload. +// Data is pointer value to an object which the request's response +// payload will be deserialized to. +func New(cfg aws.Config, clientInfo metadata.ClientInfo, handlers Handlers, + retryer Retryer, operation *Operation, params interface{}, data interface{}) *Request { + + method := operation.HTTPMethod + if method == "" { + method = "POST" + } + + httpReq, _ := http.NewRequest(method, "", nil) + + var err error + httpReq.URL, err = url.Parse(clientInfo.Endpoint + operation.HTTPPath) + if err != nil { + httpReq.URL = &url.URL{} + err = awserr.New("InvalidEndpointURL", "invalid endpoint uri", err) + } + + r := &Request{ + Config: cfg, + ClientInfo: clientInfo, + Handlers: handlers.Copy(), + + Retryer: retryer, + Time: time.Now(), + ExpireTime: 0, + Operation: operation, + HTTPRequest: httpReq, + Body: nil, + Params: params, + Error: err, + Data: data, + } + r.SetBufferBody([]byte{}) + + return r +} + +// A Option is a functional option that can augment or modify a request when +// using a WithContext API operation method. +type Option func(*Request) + +// WithGetResponseHeader builds a request Option which will retrieve a single +// header value from the HTTP Response. If there are multiple values for the +// header key use WithGetResponseHeaders instead to access the http.Header +// map directly. The passed in val pointer must be non-nil. +// +// This Option can be used multiple times with a single API operation. +// +// var id2, versionID string +// svc.PutObjectWithContext(ctx, params, +// request.WithGetResponseHeader("x-amz-id-2", &id2), +// request.WithGetResponseHeader("x-amz-version-id", &versionID), +// ) +func WithGetResponseHeader(key string, val *string) Option { + return func(r *Request) { + r.Handlers.Complete.PushBack(func(req *Request) { + *val = req.HTTPResponse.Header.Get(key) + }) + } +} + +// WithGetResponseHeaders builds a request Option which will retrieve the +// headers from the HTTP response and assign them to the passed in headers +// variable. The passed in headers pointer must be non-nil. +// +// var headers http.Header +// svc.PutObjectWithContext(ctx, params, request.WithGetResponseHeaders(&headers)) +func WithGetResponseHeaders(headers *http.Header) Option { + return func(r *Request) { + r.Handlers.Complete.PushBack(func(req *Request) { + *headers = req.HTTPResponse.Header + }) + } +} + +// WithLogLevel is a request option that will set the request to use a specific +// log level when the request is made. +// +// svc.PutObjectWithContext(ctx, params, request.WithLogLevel(aws.LogDebugWithHTTPBody) +func WithLogLevel(l aws.LogLevelType) Option { + return func(r *Request) { + r.Config.LogLevel = aws.LogLevel(l) + } +} + +// ApplyOptions will apply each option to the request calling them in the order +// the were provided. +func (r *Request) ApplyOptions(opts ...Option) { + for _, opt := range opts { + opt(r) + } +} + +// Context will always returns a non-nil context. If Request does not have a +// context aws.BackgroundContext will be returned. +func (r *Request) Context() aws.Context { + if r.context != nil { + return r.context + } + return aws.BackgroundContext() +} + +// SetContext adds a Context to the current request that can be used to cancel +// a in-flight request. The Context value must not be nil, or this method will +// panic. +// +// Unlike http.Request.WithContext, SetContext does not return a copy of the +// Request. It is not safe to use use a single Request value for multiple +// requests. A new Request should be created for each API operation request. +// +// Go 1.6 and below: +// The http.Request's Cancel field will be set to the Done() value of +// the context. This will overwrite the Cancel field's value. +// +// Go 1.7 and above: +// The http.Request.WithContext will be used to set the context on the underlying +// http.Request. This will create a shallow copy of the http.Request. The SDK +// may create sub contexts in the future for nested requests such as retries. +func (r *Request) SetContext(ctx aws.Context) { + if ctx == nil { + panic("context cannot be nil") + } + setRequestContext(r, ctx) +} + +// WillRetry returns if the request's can be retried. +func (r *Request) WillRetry() bool { + return r.Error != nil && aws.BoolValue(r.Retryable) && r.RetryCount < r.MaxRetries() +} + +// ParamsFilled returns if the request's parameters have been populated +// and the parameters are valid. False is returned if no parameters are +// provided or invalid. +func (r *Request) ParamsFilled() bool { + return r.Params != nil && reflect.ValueOf(r.Params).Elem().IsValid() +} + +// DataFilled returns true if the request's data for response deserialization +// target has been set and is a valid. False is returned if data is not +// set, or is invalid. +func (r *Request) DataFilled() bool { + return r.Data != nil && reflect.ValueOf(r.Data).Elem().IsValid() +} + +// SetBufferBody will set the request's body bytes that will be sent to +// the service API. +func (r *Request) SetBufferBody(buf []byte) { + r.SetReaderBody(bytes.NewReader(buf)) +} + +// SetStringBody sets the body of the request to be backed by a string. +func (r *Request) SetStringBody(s string) { + r.SetReaderBody(strings.NewReader(s)) +} + +// SetReaderBody will set the request's body reader. +func (r *Request) SetReaderBody(reader io.ReadSeeker) { + r.Body = reader + r.ResetBody() +} + +// Presign returns the request's signed URL. Error will be returned +// if the signing fails. +func (r *Request) Presign(expireTime time.Duration) (string, error) { + r.ExpireTime = expireTime + r.NotHoist = false + + if r.Operation.BeforePresignFn != nil { + r = r.copy() + err := r.Operation.BeforePresignFn(r) + if err != nil { + return "", err + } + } + + r.Sign() + if r.Error != nil { + return "", r.Error + } + return r.HTTPRequest.URL.String(), nil +} + +// PresignRequest behaves just like presign, but hoists all headers and signs them. +// Also returns the signed hash back to the user +func (r *Request) PresignRequest(expireTime time.Duration) (string, http.Header, error) { + r.ExpireTime = expireTime + r.NotHoist = true + r.Sign() + if r.Error != nil { + return "", nil, r.Error + } + return r.HTTPRequest.URL.String(), r.SignedHeaderVals, nil +} + +func debugLogReqError(r *Request, stage string, retrying bool, err error) { + if !r.Config.LogLevel.Matches(aws.LogDebugWithRequestErrors) { + return + } + + retryStr := "not retrying" + if retrying { + retryStr = "will retry" + } + + r.Config.Logger.Log(fmt.Sprintf("DEBUG: %s %s/%s failed, %s, error %v", + stage, r.ClientInfo.ServiceName, r.Operation.Name, retryStr, err)) +} + +// Build will build the request's object so it can be signed and sent +// to the service. Build will also validate all the request's parameters. +// Anny additional build Handlers set on this request will be run +// in the order they were set. +// +// The request will only be built once. Multiple calls to build will have +// no effect. +// +// If any Validate or Build errors occur the build will stop and the error +// which occurred will be returned. +func (r *Request) Build() error { + if !r.built { + r.Handlers.Validate.Run(r) + if r.Error != nil { + debugLogReqError(r, "Validate Request", false, r.Error) + return r.Error + } + r.Handlers.Build.Run(r) + if r.Error != nil { + debugLogReqError(r, "Build Request", false, r.Error) + return r.Error + } + r.built = true + } + + return r.Error +} + +// Sign will sign the request returning error if errors are encountered. +// +// Send will build the request prior to signing. All Sign Handlers will +// be executed in the order they were set. +func (r *Request) Sign() error { + r.Build() + if r.Error != nil { + debugLogReqError(r, "Build Request", false, r.Error) + return r.Error + } + + r.Handlers.Sign.Run(r) + return r.Error +} + +// ResetBody rewinds the request body backto its starting position, and +// set's the HTTP Request body reference. When the body is read prior +// to being sent in the HTTP request it will need to be rewound. +func (r *Request) ResetBody() { + if r.safeBody != nil { + r.safeBody.Close() + } + + r.safeBody = newOffsetReader(r.Body, r.BodyStart) + + // Go 1.8 tightened and clarified the rules code needs to use when building + // requests with the http package. Go 1.8 removed the automatic detection + // of if the Request.Body was empty, or actually had bytes in it. The SDK + // always sets the Request.Body even if it is empty and should not actually + // be sent. This is incorrect. + // + // Go 1.8 did add a http.NoBody value that the SDK can use to tell the http + // client that the request really should be sent without a body. The + // Request.Body cannot be set to nil, which is preferable, because the + // field is exported and could introduce nil pointer dereferences for users + // of the SDK if they used that field. + // + // Related golang/go#18257 + l, err := computeBodyLength(r.Body) + if err != nil { + r.Error = awserr.New(ErrCodeSerialization, "failed to compute request body size", err) + return + } + + if l == 0 { + r.HTTPRequest.Body = noBodyReader + } else if l > 0 { + r.HTTPRequest.Body = r.safeBody + } else { + // Hack to prevent sending bodies for methods where the body + // should be ignored by the server. Sending bodies on these + // methods without an associated ContentLength will cause the + // request to socket timeout because the server does not handle + // Transfer-Encoding: chunked bodies for these methods. + // + // This would only happen if a aws.ReaderSeekerCloser was used with + // a io.Reader that was not also an io.Seeker. + switch r.Operation.HTTPMethod { + case "GET", "HEAD", "DELETE": + r.HTTPRequest.Body = noBodyReader + default: + r.HTTPRequest.Body = r.safeBody + } + } +} + +// Attempts to compute the length of the body of the reader using the +// io.Seeker interface. If the value is not seekable because of being +// a ReaderSeekerCloser without an unerlying Seeker -1 will be returned. +// If no error occurs the length of the body will be returned. +func computeBodyLength(r io.ReadSeeker) (int64, error) { + seekable := true + // Determine if the seeker is actually seekable. ReaderSeekerCloser + // hides the fact that a io.Readers might not actually be seekable. + switch v := r.(type) { + case aws.ReaderSeekerCloser: + seekable = v.IsSeeker() + case *aws.ReaderSeekerCloser: + seekable = v.IsSeeker() + } + if !seekable { + return -1, nil + } + + curOffset, err := r.Seek(0, 1) + if err != nil { + return 0, err + } + + endOffset, err := r.Seek(0, 2) + if err != nil { + return 0, err + } + + _, err = r.Seek(curOffset, 0) + if err != nil { + return 0, err + } + + return endOffset - curOffset, nil +} + +// GetBody will return an io.ReadSeeker of the Request's underlying +// input body with a concurrency safe wrapper. +func (r *Request) GetBody() io.ReadSeeker { + return r.safeBody +} + +// Send will send the request returning error if errors are encountered. +// +// Send will sign the request prior to sending. All Send Handlers will +// be executed in the order they were set. +// +// Canceling a request is non-deterministic. If a request has been canceled, +// then the transport will choose, randomly, one of the state channels during +// reads or getting the connection. +// +// readLoop() and getConn(req *Request, cm connectMethod) +// https://github.com/golang/go/blob/master/src/net/http/transport.go +// +// Send will not close the request.Request's body. +func (r *Request) Send() error { + defer func() { + // Regardless of success or failure of the request trigger the Complete + // request handlers. + r.Handlers.Complete.Run(r) + }() + + for { + if aws.BoolValue(r.Retryable) { + if r.Config.LogLevel.Matches(aws.LogDebugWithRequestRetries) { + r.Config.Logger.Log(fmt.Sprintf("DEBUG: Retrying Request %s/%s, attempt %d", + r.ClientInfo.ServiceName, r.Operation.Name, r.RetryCount)) + } + + // The previous http.Request will have a reference to the r.Body + // and the HTTP Client's Transport may still be reading from + // the request's body even though the Client's Do returned. + r.HTTPRequest = copyHTTPRequest(r.HTTPRequest, nil) + r.ResetBody() + + // Closing response body to ensure that no response body is leaked + // between retry attempts. + if r.HTTPResponse != nil && r.HTTPResponse.Body != nil { + r.HTTPResponse.Body.Close() + } + } + + r.Sign() + if r.Error != nil { + return r.Error + } + + r.Retryable = nil + + r.Handlers.Send.Run(r) + if r.Error != nil { + if !shouldRetryCancel(r) { + return r.Error + } + + err := r.Error + r.Handlers.Retry.Run(r) + r.Handlers.AfterRetry.Run(r) + if r.Error != nil { + debugLogReqError(r, "Send Request", false, r.Error) + return r.Error + } + debugLogReqError(r, "Send Request", true, err) + continue + } + r.Handlers.UnmarshalMeta.Run(r) + r.Handlers.ValidateResponse.Run(r) + if r.Error != nil { + err := r.Error + r.Handlers.UnmarshalError.Run(r) + r.Handlers.Retry.Run(r) + r.Handlers.AfterRetry.Run(r) + if r.Error != nil { + debugLogReqError(r, "Validate Response", false, r.Error) + return r.Error + } + debugLogReqError(r, "Validate Response", true, err) + continue + } + + r.Handlers.Unmarshal.Run(r) + if r.Error != nil { + err := r.Error + r.Handlers.Retry.Run(r) + r.Handlers.AfterRetry.Run(r) + if r.Error != nil { + debugLogReqError(r, "Unmarshal Response", false, r.Error) + return r.Error + } + debugLogReqError(r, "Unmarshal Response", true, err) + continue + } + + break + } + + return nil +} + +// copy will copy a request which will allow for local manipulation of the +// request. +func (r *Request) copy() *Request { + req := &Request{} + *req = *r + req.Handlers = r.Handlers.Copy() + op := *r.Operation + req.Operation = &op + return req +} + +// AddToUserAgent adds the string to the end of the request's current user agent. +func AddToUserAgent(r *Request, s string) { + curUA := r.HTTPRequest.Header.Get("User-Agent") + if len(curUA) > 0 { + s = curUA + " " + s + } + r.HTTPRequest.Header.Set("User-Agent", s) +} + +func shouldRetryCancel(r *Request) bool { + awsErr, ok := r.Error.(awserr.Error) + timeoutErr := false + errStr := r.Error.Error() + if ok { + if awsErr.Code() == CanceledErrorCode { + return false + } + err := awsErr.OrigErr() + netErr, netOK := err.(net.Error) + timeoutErr = netOK && netErr.Temporary() + if urlErr, ok := err.(*url.Error); !timeoutErr && ok { + errStr = urlErr.Err.Error() + } + } + + // There can be two types of canceled errors here. + // The first being a net.Error and the other being an error. + // If the request was timed out, we want to continue the retry + // process. Otherwise, return the canceled error. + return timeoutErr || + (errStr != "net/http: request canceled" && + errStr != "net/http: request canceled while waiting for connection") + +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/request_1_7.go b/vendor/github.com/aws/aws-sdk-go/aws/request/request_1_7.go new file mode 100644 index 00000000..1323af90 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/request_1_7.go @@ -0,0 +1,21 @@ +// +build !go1.8 + +package request + +import "io" + +// NoBody is an io.ReadCloser with no bytes. Read always returns EOF +// and Close always returns nil. It can be used in an outgoing client +// request to explicitly signal that a request has zero bytes. +// An alternative, however, is to simply set Request.Body to nil. +// +// Copy of Go 1.8 NoBody type from net/http/http.go +type noBody struct{} + +func (noBody) Read([]byte) (int, error) { return 0, io.EOF } +func (noBody) Close() error { return nil } +func (noBody) WriteTo(io.Writer) (int64, error) { return 0, nil } + +// Is an empty reader that will trigger the Go HTTP client to not include +// and body in the HTTP request. +var noBodyReader = noBody{} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/request_1_8.go b/vendor/github.com/aws/aws-sdk-go/aws/request/request_1_8.go new file mode 100644 index 00000000..8b963f4d --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/request_1_8.go @@ -0,0 +1,9 @@ +// +build go1.8 + +package request + +import "net/http" + +// Is a http.NoBody reader instructing Go HTTP client to not include +// and body in the HTTP request. +var noBodyReader = http.NoBody diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/request_context.go b/vendor/github.com/aws/aws-sdk-go/aws/request/request_context.go new file mode 100644 index 00000000..a7365cd1 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/request_context.go @@ -0,0 +1,14 @@ +// +build go1.7 + +package request + +import "github.com/aws/aws-sdk-go/aws" + +// setContext updates the Request to use the passed in context for cancellation. +// Context will also be used for request retry delay. +// +// Creates shallow copy of the http.Request with the WithContext method. +func setRequestContext(r *Request, ctx aws.Context) { + r.context = ctx + r.HTTPRequest = r.HTTPRequest.WithContext(ctx) +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/request_context_1_6.go b/vendor/github.com/aws/aws-sdk-go/aws/request/request_context_1_6.go new file mode 100644 index 00000000..307fa070 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/request_context_1_6.go @@ -0,0 +1,14 @@ +// +build !go1.7 + +package request + +import "github.com/aws/aws-sdk-go/aws" + +// setContext updates the Request to use the passed in context for cancellation. +// Context will also be used for request retry delay. +// +// Creates shallow copy of the http.Request with the WithContext method. +func setRequestContext(r *Request, ctx aws.Context) { + r.context = ctx + r.HTTPRequest.Cancel = ctx.Done() +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/request_pagination.go b/vendor/github.com/aws/aws-sdk-go/aws/request/request_pagination.go new file mode 100644 index 00000000..59de6736 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/request_pagination.go @@ -0,0 +1,236 @@ +package request + +import ( + "reflect" + "sync/atomic" + + "github.com/aws/aws-sdk-go/aws" + "github.com/aws/aws-sdk-go/aws/awsutil" +) + +// A Pagination provides paginating of SDK API operations which are paginatable. +// Generally you should not use this type directly, but use the "Pages" API +// operations method to automatically perform pagination for you. Such as, +// "S3.ListObjectsPages", and "S3.ListObjectsPagesWithContext" methods. +// +// Pagination differs from a Paginator type in that pagination is the type that +// does the pagination between API operations, and Paginator defines the +// configuration that will be used per page request. +// +// cont := true +// for p.Next() && cont { +// data := p.Page().(*s3.ListObjectsOutput) +// // process the page's data +// } +// return p.Err() +// +// See service client API operation Pages methods for examples how the SDK will +// use the Pagination type. +type Pagination struct { + // Function to return a Request value for each pagination request. + // Any configuration or handlers that need to be applied to the request + // prior to getting the next page should be done here before the request + // returned. + // + // NewRequest should always be built from the same API operations. It is + // undefined if different API operations are returned on subsequent calls. + NewRequest func() (*Request, error) + + started bool + nextTokens []interface{} + + err error + curPage interface{} +} + +// HasNextPage will return true if Pagination is able to determine that the API +// operation has additional pages. False will be returned if there are no more +// pages remaining. +// +// Will always return true if Next has not been called yet. +func (p *Pagination) HasNextPage() bool { + return !(p.started && len(p.nextTokens) == 0) +} + +// Err returns the error Pagination encountered when retrieving the next page. +func (p *Pagination) Err() error { + return p.err +} + +// Page returns the current page. Page should only be called after a successful +// call to Next. It is undefined what Page will return if Page is called after +// Next returns false. +func (p *Pagination) Page() interface{} { + return p.curPage +} + +// Next will attempt to retrieve the next page for the API operation. When a page +// is retrieved true will be returned. If the page cannot be retrieved, or there +// are no more pages false will be returned. +// +// Use the Page method to retrieve the current page data. The data will need +// to be cast to the API operation's output type. +// +// Use the Err method to determine if an error occurred if Page returns false. +func (p *Pagination) Next() bool { + if !p.HasNextPage() { + return false + } + + req, err := p.NewRequest() + if err != nil { + p.err = err + return false + } + + if p.started { + for i, intok := range req.Operation.InputTokens { + awsutil.SetValueAtPath(req.Params, intok, p.nextTokens[i]) + } + } + p.started = true + + err = req.Send() + if err != nil { + p.err = err + return false + } + + p.nextTokens = req.nextPageTokens() + p.curPage = req.Data + + return true +} + +// A Paginator is the configuration data that defines how an API operation +// should be paginated. This type is used by the API service models to define +// the generated pagination config for service APIs. +// +// The Pagination type is what provides iterating between pages of an API. It +// is only used to store the token metadata the SDK should use for performing +// pagination. +type Paginator struct { + InputTokens []string + OutputTokens []string + LimitToken string + TruncationToken string +} + +// nextPageTokens returns the tokens to use when asking for the next page of data. +func (r *Request) nextPageTokens() []interface{} { + if r.Operation.Paginator == nil { + return nil + } + if r.Operation.TruncationToken != "" { + tr, _ := awsutil.ValuesAtPath(r.Data, r.Operation.TruncationToken) + if len(tr) == 0 { + return nil + } + + switch v := tr[0].(type) { + case *bool: + if !aws.BoolValue(v) { + return nil + } + case bool: + if v == false { + return nil + } + } + } + + tokens := []interface{}{} + tokenAdded := false + for _, outToken := range r.Operation.OutputTokens { + v, _ := awsutil.ValuesAtPath(r.Data, outToken) + if len(v) > 0 { + tokens = append(tokens, v[0]) + tokenAdded = true + } else { + tokens = append(tokens, nil) + } + } + if !tokenAdded { + return nil + } + + return tokens +} + +// Ensure a deprecated item is only logged once instead of each time its used. +func logDeprecatedf(logger aws.Logger, flag *int32, msg string) { + if logger == nil { + return + } + if atomic.CompareAndSwapInt32(flag, 0, 1) { + logger.Log(msg) + } +} + +var ( + logDeprecatedHasNextPage int32 + logDeprecatedNextPage int32 + logDeprecatedEachPage int32 +) + +// HasNextPage returns true if this request has more pages of data available. +// +// Deprecated Use Pagination type for configurable pagination of API operations +func (r *Request) HasNextPage() bool { + logDeprecatedf(r.Config.Logger, &logDeprecatedHasNextPage, + "Request.HasNextPage deprecated. Use Pagination type for configurable pagination of API operations") + + return len(r.nextPageTokens()) > 0 +} + +// NextPage returns a new Request that can be executed to return the next +// page of result data. Call .Send() on this request to execute it. +// +// Deprecated Use Pagination type for configurable pagination of API operations +func (r *Request) NextPage() *Request { + logDeprecatedf(r.Config.Logger, &logDeprecatedNextPage, + "Request.NextPage deprecated. Use Pagination type for configurable pagination of API operations") + + tokens := r.nextPageTokens() + if len(tokens) == 0 { + return nil + } + + data := reflect.New(reflect.TypeOf(r.Data).Elem()).Interface() + nr := New(r.Config, r.ClientInfo, r.Handlers, r.Retryer, r.Operation, awsutil.CopyOf(r.Params), data) + for i, intok := range nr.Operation.InputTokens { + awsutil.SetValueAtPath(nr.Params, intok, tokens[i]) + } + return nr +} + +// EachPage iterates over each page of a paginated request object. The fn +// parameter should be a function with the following sample signature: +// +// func(page *T, lastPage bool) bool { +// return true // return false to stop iterating +// } +// +// Where "T" is the structure type matching the output structure of the given +// operation. For example, a request object generated by +// DynamoDB.ListTablesRequest() would expect to see dynamodb.ListTablesOutput +// as the structure "T". The lastPage value represents whether the page is +// the last page of data or not. The return value of this function should +// return true to keep iterating or false to stop. +// +// Deprecated Use Pagination type for configurable pagination of API operations +func (r *Request) EachPage(fn func(data interface{}, isLastPage bool) (shouldContinue bool)) error { + logDeprecatedf(r.Config.Logger, &logDeprecatedEachPage, + "Request.EachPage deprecated. Use Pagination type for configurable pagination of API operations") + + for page := r; page != nil; page = page.NextPage() { + if err := page.Send(); err != nil { + return err + } + if getNextPage := fn(page.Data, !page.HasNextPage()); !getNextPage { + return page.Error + } + } + + return nil +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/retryer.go b/vendor/github.com/aws/aws-sdk-go/aws/request/retryer.go new file mode 100644 index 00000000..7af81de2 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/retryer.go @@ -0,0 +1,154 @@ +package request + +import ( + "time" + + "github.com/aws/aws-sdk-go/aws" + "github.com/aws/aws-sdk-go/aws/awserr" +) + +// Retryer is an interface to control retry logic for a given service. +// The default implementation used by most services is the service.DefaultRetryer +// structure, which contains basic retry logic using exponential backoff. +type Retryer interface { + RetryRules(*Request) time.Duration + ShouldRetry(*Request) bool + MaxRetries() int +} + +// WithRetryer sets a config Retryer value to the given Config returning it +// for chaining. +func WithRetryer(cfg *aws.Config, retryer Retryer) *aws.Config { + cfg.Retryer = retryer + return cfg +} + +// retryableCodes is a collection of service response codes which are retry-able +// without any further action. +var retryableCodes = map[string]struct{}{ + "RequestError": {}, + "RequestTimeout": {}, + ErrCodeResponseTimeout: {}, + "RequestTimeoutException": {}, // Glacier's flavor of RequestTimeout +} + +var throttleCodes = map[string]struct{}{ + "ProvisionedThroughputExceededException": {}, + "Throttling": {}, + "ThrottlingException": {}, + "RequestLimitExceeded": {}, + "RequestThrottled": {}, + "LimitExceededException": {}, // Deleting 10+ DynamoDb tables at once + "TooManyRequestsException": {}, // Lambda functions + "PriorRequestNotComplete": {}, // Route53 +} + +// credsExpiredCodes is a collection of error codes which signify the credentials +// need to be refreshed. Expired tokens require refreshing of credentials, and +// resigning before the request can be retried. +var credsExpiredCodes = map[string]struct{}{ + "ExpiredToken": {}, + "ExpiredTokenException": {}, + "RequestExpired": {}, // EC2 Only +} + +func isCodeThrottle(code string) bool { + _, ok := throttleCodes[code] + return ok +} + +func isCodeRetryable(code string) bool { + if _, ok := retryableCodes[code]; ok { + return true + } + + return isCodeExpiredCreds(code) +} + +func isCodeExpiredCreds(code string) bool { + _, ok := credsExpiredCodes[code] + return ok +} + +var validParentCodes = map[string]struct{}{ + ErrCodeSerialization: struct{}{}, + ErrCodeRead: struct{}{}, +} + +func isNestedErrorRetryable(parentErr awserr.Error) bool { + if parentErr == nil { + return false + } + + if _, ok := validParentCodes[parentErr.Code()]; !ok { + return false + } + + err := parentErr.OrigErr() + if err == nil { + return false + } + + if aerr, ok := err.(awserr.Error); ok { + return isCodeRetryable(aerr.Code()) + } + + return isErrConnectionReset(err) +} + +// IsErrorRetryable returns whether the error is retryable, based on its Code. +// Returns false if error is nil. +func IsErrorRetryable(err error) bool { + if err != nil { + if aerr, ok := err.(awserr.Error); ok { + return isCodeRetryable(aerr.Code()) || isNestedErrorRetryable(aerr) + } + } + return false +} + +// IsErrorThrottle returns whether the error is to be throttled based on its code. +// Returns false if error is nil. +func IsErrorThrottle(err error) bool { + if err != nil { + if aerr, ok := err.(awserr.Error); ok { + return isCodeThrottle(aerr.Code()) + } + } + return false +} + +// IsErrorExpiredCreds returns whether the error code is a credential expiry error. +// Returns false if error is nil. +func IsErrorExpiredCreds(err error) bool { + if err != nil { + if aerr, ok := err.(awserr.Error); ok { + return isCodeExpiredCreds(aerr.Code()) + } + } + return false +} + +// IsErrorRetryable returns whether the error is retryable, based on its Code. +// Returns false if the request has no Error set. +// +// Alias for the utility function IsErrorRetryable +func (r *Request) IsErrorRetryable() bool { + return IsErrorRetryable(r.Error) +} + +// IsErrorThrottle returns whether the error is to be throttled based on its code. +// Returns false if the request has no Error set +// +// Alias for the utility function IsErrorThrottle +func (r *Request) IsErrorThrottle() bool { + return IsErrorThrottle(r.Error) +} + +// IsErrorExpired returns whether the error code is a credential expiry error. +// Returns false if the request has no Error set. +// +// Alias for the utility function IsErrorExpiredCreds +func (r *Request) IsErrorExpired() bool { + return IsErrorExpiredCreds(r.Error) +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/timeout_read_closer.go b/vendor/github.com/aws/aws-sdk-go/aws/request/timeout_read_closer.go new file mode 100644 index 00000000..09a44eb9 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/timeout_read_closer.go @@ -0,0 +1,94 @@ +package request + +import ( + "io" + "time" + + "github.com/aws/aws-sdk-go/aws/awserr" +) + +var timeoutErr = awserr.New( + ErrCodeResponseTimeout, + "read on body has reached the timeout limit", + nil, +) + +type readResult struct { + n int + err error +} + +// timeoutReadCloser will handle body reads that take too long. +// We will return a ErrReadTimeout error if a timeout occurs. +type timeoutReadCloser struct { + reader io.ReadCloser + duration time.Duration +} + +// Read will spin off a goroutine to call the reader's Read method. We will +// select on the timer's channel or the read's channel. Whoever completes first +// will be returned. +func (r *timeoutReadCloser) Read(b []byte) (int, error) { + timer := time.NewTimer(r.duration) + c := make(chan readResult, 1) + + go func() { + n, err := r.reader.Read(b) + timer.Stop() + c <- readResult{n: n, err: err} + }() + + select { + case data := <-c: + return data.n, data.err + case <-timer.C: + return 0, timeoutErr + } +} + +func (r *timeoutReadCloser) Close() error { + return r.reader.Close() +} + +const ( + // HandlerResponseTimeout is what we use to signify the name of the + // response timeout handler. + HandlerResponseTimeout = "ResponseTimeoutHandler" +) + +// adaptToResponseTimeoutError is a handler that will replace any top level error +// to a ErrCodeResponseTimeout, if its child is that. +func adaptToResponseTimeoutError(req *Request) { + if err, ok := req.Error.(awserr.Error); ok { + aerr, ok := err.OrigErr().(awserr.Error) + if ok && aerr.Code() == ErrCodeResponseTimeout { + req.Error = aerr + } + } +} + +// WithResponseReadTimeout is a request option that will wrap the body in a timeout read closer. +// This will allow for per read timeouts. If a timeout occurred, we will return the +// ErrCodeResponseTimeout. +// +// svc.PutObjectWithContext(ctx, params, request.WithTimeoutReadCloser(30 * time.Second) +func WithResponseReadTimeout(duration time.Duration) Option { + return func(r *Request) { + + var timeoutHandler = NamedHandler{ + HandlerResponseTimeout, + func(req *Request) { + req.HTTPResponse.Body = &timeoutReadCloser{ + reader: req.HTTPResponse.Body, + duration: duration, + } + }} + + // remove the handler so we are not stomping over any new durations. + r.Handlers.Send.RemoveByName(HandlerResponseTimeout) + r.Handlers.Send.PushBackNamed(timeoutHandler) + + r.Handlers.Unmarshal.PushBack(adaptToResponseTimeoutError) + r.Handlers.UnmarshalError.PushBack(adaptToResponseTimeoutError) + } +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/validation.go b/vendor/github.com/aws/aws-sdk-go/aws/request/validation.go new file mode 100644 index 00000000..2520286b --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/validation.go @@ -0,0 +1,234 @@ +package request + +import ( + "bytes" + "fmt" + + "github.com/aws/aws-sdk-go/aws/awserr" +) + +const ( + // InvalidParameterErrCode is the error code for invalid parameters errors + InvalidParameterErrCode = "InvalidParameter" + // ParamRequiredErrCode is the error code for required parameter errors + ParamRequiredErrCode = "ParamRequiredError" + // ParamMinValueErrCode is the error code for fields with too low of a + // number value. + ParamMinValueErrCode = "ParamMinValueError" + // ParamMinLenErrCode is the error code for fields without enough elements. + ParamMinLenErrCode = "ParamMinLenError" +) + +// Validator provides a way for types to perform validation logic on their +// input values that external code can use to determine if a type's values +// are valid. +type Validator interface { + Validate() error +} + +// An ErrInvalidParams provides wrapping of invalid parameter errors found when +// validating API operation input parameters. +type ErrInvalidParams struct { + // Context is the base context of the invalid parameter group. + Context string + errs []ErrInvalidParam +} + +// Add adds a new invalid parameter error to the collection of invalid +// parameters. The context of the invalid parameter will be updated to reflect +// this collection. +func (e *ErrInvalidParams) Add(err ErrInvalidParam) { + err.SetContext(e.Context) + e.errs = append(e.errs, err) +} + +// AddNested adds the invalid parameter errors from another ErrInvalidParams +// value into this collection. The nested errors will have their nested context +// updated and base context to reflect the merging. +// +// Use for nested validations errors. +func (e *ErrInvalidParams) AddNested(nestedCtx string, nested ErrInvalidParams) { + for _, err := range nested.errs { + err.SetContext(e.Context) + err.AddNestedContext(nestedCtx) + e.errs = append(e.errs, err) + } +} + +// Len returns the number of invalid parameter errors +func (e ErrInvalidParams) Len() int { + return len(e.errs) +} + +// Code returns the code of the error +func (e ErrInvalidParams) Code() string { + return InvalidParameterErrCode +} + +// Message returns the message of the error +func (e ErrInvalidParams) Message() string { + return fmt.Sprintf("%d validation error(s) found.", len(e.errs)) +} + +// Error returns the string formatted form of the invalid parameters. +func (e ErrInvalidParams) Error() string { + w := &bytes.Buffer{} + fmt.Fprintf(w, "%s: %s\n", e.Code(), e.Message()) + + for _, err := range e.errs { + fmt.Fprintf(w, "- %s\n", err.Message()) + } + + return w.String() +} + +// OrigErr returns the invalid parameters as a awserr.BatchedErrors value +func (e ErrInvalidParams) OrigErr() error { + return awserr.NewBatchError( + InvalidParameterErrCode, e.Message(), e.OrigErrs()) +} + +// OrigErrs returns a slice of the invalid parameters +func (e ErrInvalidParams) OrigErrs() []error { + errs := make([]error, len(e.errs)) + for i := 0; i < len(errs); i++ { + errs[i] = e.errs[i] + } + + return errs +} + +// An ErrInvalidParam represents an invalid parameter error type. +type ErrInvalidParam interface { + awserr.Error + + // Field name the error occurred on. + Field() string + + // SetContext updates the context of the error. + SetContext(string) + + // AddNestedContext updates the error's context to include a nested level. + AddNestedContext(string) +} + +type errInvalidParam struct { + context string + nestedContext string + field string + code string + msg string +} + +// Code returns the error code for the type of invalid parameter. +func (e *errInvalidParam) Code() string { + return e.code +} + +// Message returns the reason the parameter was invalid, and its context. +func (e *errInvalidParam) Message() string { + return fmt.Sprintf("%s, %s.", e.msg, e.Field()) +} + +// Error returns the string version of the invalid parameter error. +func (e *errInvalidParam) Error() string { + return fmt.Sprintf("%s: %s", e.code, e.Message()) +} + +// OrigErr returns nil, Implemented for awserr.Error interface. +func (e *errInvalidParam) OrigErr() error { + return nil +} + +// Field Returns the field and context the error occurred. +func (e *errInvalidParam) Field() string { + field := e.context + if len(field) > 0 { + field += "." + } + if len(e.nestedContext) > 0 { + field += fmt.Sprintf("%s.", e.nestedContext) + } + field += e.field + + return field +} + +// SetContext updates the base context of the error. +func (e *errInvalidParam) SetContext(ctx string) { + e.context = ctx +} + +// AddNestedContext prepends a context to the field's path. +func (e *errInvalidParam) AddNestedContext(ctx string) { + if len(e.nestedContext) == 0 { + e.nestedContext = ctx + } else { + e.nestedContext = fmt.Sprintf("%s.%s", ctx, e.nestedContext) + } + +} + +// An ErrParamRequired represents an required parameter error. +type ErrParamRequired struct { + errInvalidParam +} + +// NewErrParamRequired creates a new required parameter error. +func NewErrParamRequired(field string) *ErrParamRequired { + return &ErrParamRequired{ + errInvalidParam{ + code: ParamRequiredErrCode, + field: field, + msg: fmt.Sprintf("missing required field"), + }, + } +} + +// An ErrParamMinValue represents a minimum value parameter error. +type ErrParamMinValue struct { + errInvalidParam + min float64 +} + +// NewErrParamMinValue creates a new minimum value parameter error. +func NewErrParamMinValue(field string, min float64) *ErrParamMinValue { + return &ErrParamMinValue{ + errInvalidParam: errInvalidParam{ + code: ParamMinValueErrCode, + field: field, + msg: fmt.Sprintf("minimum field value of %v", min), + }, + min: min, + } +} + +// MinValue returns the field's require minimum value. +// +// float64 is returned for both int and float min values. +func (e *ErrParamMinValue) MinValue() float64 { + return e.min +} + +// An ErrParamMinLen represents a minimum length parameter error. +type ErrParamMinLen struct { + errInvalidParam + min int +} + +// NewErrParamMinLen creates a new minimum length parameter error. +func NewErrParamMinLen(field string, min int) *ErrParamMinLen { + return &ErrParamMinLen{ + errInvalidParam: errInvalidParam{ + code: ParamMinValueErrCode, + field: field, + msg: fmt.Sprintf("minimum field size of %v", min), + }, + min: min, + } +} + +// MinLen returns the field's required minimum length. +func (e *ErrParamMinLen) MinLen() int { + return e.min +} diff --git a/vendor/github.com/aws/aws-sdk-go/aws/request/waiter.go b/vendor/github.com/aws/aws-sdk-go/aws/request/waiter.go new file mode 100644 index 00000000..854b0854 --- /dev/null +++ b/vendor/github.com/aws/aws-sdk-go/aws/request/waiter.go @@ -0,0 +1,287 @@ +package request + +import ( + "fmt" + "time" + + "github.com/aws/aws-sdk-go/aws" + "github.com/aws/aws-sdk-go/aws/awserr" + "github.com/aws/aws-sdk-go/aws/awsutil" +) + +// WaiterResourceNotReadyErrorCode is the error code returned by a waiter when +// the waiter's max attempts have been exhausted. +const WaiterResourceNotReadyErrorCode = "ResourceNotReady" + +// A WaiterOption is a function that will update the Waiter value's fields to +// configure the waiter. +type WaiterOption func(*Waiter) + +// WithWaiterMaxAttempts returns the maximum number of times the waiter should +// attempt to check the resource for the target state. +func WithWaiterMaxAttempts(max int) WaiterOption { + return func(w *Waiter) { + w.MaxAttempts = max + } +} + +// WaiterDelay will return a delay the waiter should pause between attempts to +// check the resource state. The passed in attempt is the number of times the +// Waiter has checked the resource state. +// +// Attempt is the number of attempts the Waiter has made checking the resource +// state. +type WaiterDelay func(attempt int) time.Duration + +// ConstantWaiterDelay returns a WaiterDelay that will always return a constant +// delay the waiter should use between attempts. It ignores the number of +// attempts made. +func ConstantWaiterDelay(delay time.Duration) WaiterDelay { + return func(attempt int) time.Duration { + return delay + } +} + +// WithWaiterDelay will set the Waiter to use the WaiterDelay passed in. +func WithWaiterDelay(delayer WaiterDelay) WaiterOption { + return func(w *Waiter) { + w.Delay = delayer + } +} + +// WithWaiterLogger returns a waiter option to set the logger a waiter +// should use to log warnings and errors to. +func WithWaiterLogger(logger aws.Logger) WaiterOption { + return func(w *Waiter) { + w.Logger = logger + } +} + +// WithWaiterRequestOptions returns a waiter option setting the request +// options for each request the waiter makes. Appends to waiter's request +// options already set. +func WithWaiterRequestOptions(opts ...Option) WaiterOption { + return func(w *Waiter) { + w.RequestOptions = append(w.RequestOptions, opts...) + } +} + +// A Waiter provides the functionality to performing blocking call which will +// wait for an resource state to be satisfied a service. +// +// This type should not be used directly. The API operations provided in the +// service packages prefixed with "WaitUntil" should be used instead. +type Waiter struct { + Name string + Acceptors []WaiterAcceptor + Logger aws.Logger + + MaxAttempts int + Delay WaiterDelay + + RequestOptions []Option + NewRequest func([]Option) (*Request, error) +} + +// ApplyOptions updates the waiter with the list of waiter options provided. +func (w *Waiter) ApplyOptions(opts ...WaiterOption) { + for _, fn := range opts { + fn(w) + } +} + +// WaiterState are states the waiter uses based on WaiterAcceptor definitions +// to identify if the resource state the waiter is waiting on has occurred. +type WaiterState int + +// String returns the string representation of the waiter state. +func (s WaiterState) String() string { + switch s { + case SuccessWaiterState: + return "success" + case FailureWaiterState: + return "failure" + case RetryWaiterState: + return "retry" + default: + return "unknown waiter state" + } +} + +// States the waiter acceptors will use to identify target resource states. +const ( + SuccessWaiterState WaiterState = iota // waiter successful + FailureWaiterState // waiter failed + RetryWaiterState // waiter needs to be retried +) + +// WaiterMatchMode is the mode that the waiter will use to match the WaiterAcceptor +// definition's Expected attribute. +type WaiterMatchMode int + +// Modes the waiter will use when inspecting API response to identify target +// resource states. +const ( + PathAllWaiterMatch WaiterMatchMode = iota // match on all paths + PathWaiterMatch // match on specific path + PathAnyWaiterMatch // match on any path + PathListWaiterMatch // match on list of paths + StatusWaiterMatch // match on status code + ErrorWaiterMatch // match on error +) + +// String returns the string representation of the waiter match mode. +func (m WaiterMatchMode) String() string { + switch m { + case PathAllWaiterMatch: + return "pathAll" + case PathWaiterMatch: + return "path" + case PathAnyWaiterMatch: + return "pathAny" + case PathListWaiterMatch: + return "pathList" + case StatusWaiterMatch: + return "status" + case ErrorWaiterMatch: + return "error" + default: + return "unknown waiter match mode" + } +} + +// WaitWithContext will make requests for the API operation using NewRequest to +// build API requests. The request's response will be compared against the +// Waiter's Acceptors to determine the successful state of the resource the +// waiter is inspecting. +// +// The passed in context must not be nil. If it is nil a panic will occur. The +// Context will be used to cancel the waiter's pending requests and retry delays. +// Use aws.BackgroundContext if no context is available. +// +// The waiter will continue until the target state defined by the Acceptors, +// or the max attempts expires. +// +// Will return the WaiterResourceNotReadyErrorCode error code if the waiter's +// retryer ShouldRetry returns false. This normally will happen when the max +// wait attempts expires. +func (w Waiter) WaitWithContext(ctx aws.Context) error { + + for attempt := 1; ; attempt++ { + req, err := w.NewRequest(w.RequestOptions) + if err != nil { + waiterLogf(w.Logger, "unable to create request %v", err) + return err + } + req.Handlers.Build.PushBack(MakeAddToUserAgentFreeFormHandler("Waiter")) + err = req.Send() + + // See if any of the acceptors match the request's response, or error + for _, a := range w.Acceptors { + if matched, matchErr := a.match(w.Name, w.Logger, req, err); matched { + return matchErr + } + } + + // The Waiter should only check the resource state MaxAttempts times + // This is here instead of in the for loop above to prevent delaying + // unnecessary when the waiter will not retry. + if attempt == w.MaxAttempts { + break + } + + // Delay to wait before inspecting the resource again + delay := w.Delay(attempt) + if sleepFn := req.Config.SleepDelay; sleepFn != nil { + // Support SleepDelay for backwards compatibility and testing + sleepFn(delay) + } else if err := aws.SleepWithContext(ctx, delay); err != nil { + return awserr.New(CanceledErrorCode, "waiter context canceled", err) + } + } + + return awserr.New(WaiterResourceNotReadyErrorCode, "exceeded wait attempts", nil) +} + +// A WaiterAcceptor provides the information needed to wait for an API operation +// to complete. +type WaiterAcceptor struct { + State WaiterState + Matcher WaiterMatchMode + Argument string + Expected interface{} +} + +// match returns if the acceptor found a match with the passed in request +// or error. True is returned if the acceptor made a match, error is returned +// if there was an error attempting to perform the match. +func (a *WaiterAcceptor) match(name string, l aws.Logger, req *Request, err error) (bool, error) { + result := false + var vals []interface{} + + switch a.Matcher { + case PathAllWaiterMatch, PathWaiterMatch: + // Require all matches to be equal for result to match + vals, _ = awsutil.ValuesAtPath(req.Data, a.Argument) + if len(vals) == 0 { + break + } + result = true + for _, val := range vals { + if !awsutil.DeepEqual(val, a.Expected) { + result = false + break + } + } + case PathAnyWaiterMatch: + // Only a single match needs to equal for the result to match + vals, _ = awsutil.ValuesAtPath(req.Data, a.Argument) + for _, val := range vals { + if awsutil.DeepEqual(val, a.Expected) { + result = true + break + } + } + case PathListWaiterMatch: + // ignored matcher + case StatusWaiterMatch: + s := a.Expected.(int) + result = s == req.HTTPResponse.StatusCode + case ErrorWaiterMatch: + if aerr, ok := err.(awserr.Error); ok { + result = aerr.Code() == a.Expected.(string) + } + default: + waiterLogf(l, "WARNING: Waiter %s encountered unexpected matcher: %s", + name, a.Matcher) + } + + if !result { + // If there was no matching result found there is nothing more to do + // for this response, retry the request. + return false, nil + } + + switch a.State { + case SuccessWaiterState: + // waiter completed + return true, nil + case FailureWaiterState: + // Waiter failure state triggered + return true, awserr.New(WaiterResourceNotReadyErrorCode, + "failed waiting for successful resource state", err) + case RetryWaiterState: + // clear the error and retry the operation + return false, nil + default: + waiterLogf(l, "WARNING: Waiter %s encountered unexpected state: %s", + name, a.State) + return false, nil + } +} + +func waiterLogf(logger aws.Logger, msg string, args ...interface{}) { + if logger != nil { + logger.Log(fmt.Sprintf(msg, args...)) + } +} |