1 files changed, 163 insertions, 0 deletions
diff --git a/vendor/github.com/aws/aws-sdk-go/aws/defaults/defaults.go b/vendor/github.com/aws/aws-sdk-go/aws/defaults/defaults.go
new file mode 100644
index 00000000..07afe3b8
--- /dev/null
+++ b/vendor/github.com/aws/aws-sdk-go/aws/defaults/defaults.go
@@ -0,0 +1,163 @@
+// Package defaults is a collection of helpers to retrieve the SDK's default
+// configuration and handlers.
+//
+// Generally this package shouldn't be used directly, but session.Session
+// instead. This package is useful when you need to reset the defaults
+// of a session or service client to the SDK defaults before setting
+// additional parameters.
+package defaults
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"os"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/corehandlers"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/credentials/ec2rolecreds"
+	"github.com/aws/aws-sdk-go/aws/credentials/endpointcreds"
+	"github.com/aws/aws-sdk-go/aws/ec2metadata"
+	"github.com/aws/aws-sdk-go/aws/endpoints"
+	"github.com/aws/aws-sdk-go/aws/request"
+)
+
+// A Defaults provides a collection of default values for SDK clients.
+type Defaults struct {
+	Config   *aws.Config
+	Handlers request.Handlers
+}
+
+// Get returns the SDK's default values with Config and handlers pre-configured.
+func Get() Defaults {
+	cfg := Config()
+	handlers := Handlers()
+	cfg.Credentials = CredChain(cfg, handlers)
+
+	return Defaults{
+		Config:   cfg,
+		Handlers: handlers,
+	}
+}
+
+// Config returns the default configuration without credentials.
+// To retrieve a config with credentials also included use
+// `defaults.Get().Config` instead.
+//
+// Generally you shouldn't need to use this method directly, but
+// is available if you need to reset the configuration of an
+// existing service client or session.
+func Config() *aws.Config {
+	return aws.NewConfig().
+		WithCredentials(credentials.AnonymousCredentials).
+		WithRegion(os.Getenv("AWS_REGION")).
+		WithHTTPClient(http.DefaultClient).
+		WithMaxRetries(aws.UseServiceDefaultRetries).
+		WithLogger(aws.NewDefaultLogger()).
+		WithLogLevel(aws.LogOff).
+		WithEndpointResolver(endpoints.DefaultResolver())
+}
+
+// Handlers returns the default request handlers.
+//
+// Generally you shouldn't need to use this method directly, but
+// is available if you need to reset the request handlers of an
+// existing service client or session.
+func Handlers() request.Handlers {
+	var handlers request.Handlers
+
+	handlers.Validate.PushBackNamed(corehandlers.ValidateEndpointHandler)
+	handlers.Validate.AfterEachFn = request.HandlerListStopOnError
+	handlers.Build.PushBackNamed(corehandlers.SDKVersionUserAgentHandler)
+	handlers.Build.AfterEachFn = request.HandlerListStopOnError
+	handlers.Sign.PushBackNamed(corehandlers.BuildContentLengthHandler)
+	handlers.Send.PushBackNamed(corehandlers.ValidateReqSigHandler)
+	handlers.Send.PushBackNamed(corehandlers.SendHandler)
+	handlers.AfterRetry.PushBackNamed(corehandlers.AfterRetryHandler)
+	handlers.ValidateResponse.PushBackNamed(corehandlers.ValidateResponseHandler)
+
+	return handlers
+}
+
+// CredChain returns the default credential chain.
+//
+// Generally you shouldn't need to use this method directly, but
+// is available if you need to reset the credentials of an
+// existing service client or session's Config.
+func CredChain(cfg *aws.Config, handlers request.Handlers) *credentials.Credentials {
+	return credentials.NewCredentials(&credentials.ChainProvider{
+		VerboseErrors: aws.BoolValue(cfg.CredentialsChainVerboseErrors),
+		Providers: []credentials.Provider{
+			&credentials.EnvProvider{},
+			&credentials.SharedCredentialsProvider{Filename: "", Profile: ""},
+			RemoteCredProvider(*cfg, handlers),
+		},
+	})
+}
+
+const (
+	httpProviderEnvVar     = "AWS_CONTAINER_CREDENTIALS_FULL_URI"
+	ecsCredsProviderEnvVar = "AWS_CONTAINER_CREDENTIALS_RELATIVE_URI"
+)
+
+// RemoteCredProvider returns a credentials provider for the default remote
+// endpoints such as EC2 or ECS Roles.
+func RemoteCredProvider(cfg aws.Config, handlers request.Handlers) credentials.Provider {
+	if u := os.Getenv(httpProviderEnvVar); len(u) > 0 {
+		return localHTTPCredProvider(cfg, handlers, u)
+	}
+
+	if uri := os.Getenv(ecsCredsProviderEnvVar); len(uri) > 0 {
+		u := fmt.Sprintf("http://169.254.170.2%s", uri)
+		return httpCredProvider(cfg, handlers, u)
+	}
+
+	return ec2RoleProvider(cfg, handlers)
+}
+
+func localHTTPCredProvider(cfg aws.Config, handlers request.Handlers, u string) credentials.Provider {
+	var errMsg string
+
+	parsed, err := url.Parse(u)
+	if err != nil {
+		errMsg = fmt.Sprintf("invalid URL, %v", err)
+	} else if host := aws.URLHostname(parsed); !(host == "localhost" || host == "127.0.0.1") {
+		errMsg = fmt.Sprintf("invalid host address, %q, only localhost and 127.0.0.1 are valid.", host)
+	}
+
+	if len(errMsg) > 0 {
+		if cfg.Logger != nil {
+			cfg.Logger.Log("Ignoring, HTTP credential provider", errMsg, err)
+		}
+		return credentials.ErrorProvider{
+			Err:          awserr.New("CredentialsEndpointError", errMsg, err),
+			ProviderName: endpointcreds.ProviderName,
+		}
+	}
+
+	return httpCredProvider(cfg, handlers, u)
+}
+
+func httpCredProvider(cfg aws.Config, handlers request.Handlers, u string) credentials.Provider {
+	return endpointcreds.NewProviderClient(cfg, handlers, u,
+		func(p *endpointcreds.Provider) {
+			p.ExpiryWindow = 5 * time.Minute
+		},
+	)
+}
+
+func ec2RoleProvider(cfg aws.Config, handlers request.Handlers) credentials.Provider {
+	resolver := cfg.EndpointResolver
+	if resolver == nil {
+		resolver = endpoints.DefaultResolver()
+	}
+
+	e, _ := resolver.EndpointFor(endpoints.Ec2metadataServiceID, "")
+	return &ec2rolecreds.EC2RoleProvider{
+		Client:       ec2metadata.NewClient(cfg, handlers, e.URL, e.SigningRegion),
+		ExpiryWindow: 5 * time.Minute,
+	}
+}