Merge pull request #2140 from mfojtik/add-region

Add more regions to registry S3 storage driver

registry/storage/driver/s3-aws/s3.go

@@ -107,7 +107,9 @@ func init() {
 		"us-west-1",
 		"us-west-2",
 		"eu-west-1",
+		"eu-west-2",
 		"eu-central-1",
+		"ap-south-1",
 		"ap-southeast-1",
 		"ap-southeast-2",
 		"ap-northeast-1",
@@ -115,6 +117,7 @@ func init() {
 		"sa-east-1",
 		"cn-north-1",
 		"us-gov-west-1",
+		"ca-central-1",
 	} {
 		validRegions[region] = struct{}{}
 	}

vendor.conf

@@ -1,6 +1,6 @@
 github.com/Azure/azure-sdk-for-go c6f0533defaaaa26ea4dff3c9774e36033088112
 github.com/Sirupsen/logrus d26492970760ca5d33129d2d799e34be5c4782eb
-github.com/aws/aws-sdk-go 90dec2183a5f5458ee79cbaf4b8e9ab910bc81a6
+github.com/aws/aws-sdk-go 36670f6ab1769ad77fa5f7e2c194398733503635
 github.com/bshuster-repo/logrus-logstash-hook 5f729f2fb50a301153cae84ff5c58981d51c095a
 github.com/bugsnag/bugsnag-go b1d153021fcd90ca3f080db36bec96dc690fb274
 github.com/bugsnag/osext 0dd3f918b21bec95ace9dc86c7e70266cfc5c702

vendor/github.com/aws/aws-sdk-go/aws/awserr/error.go

@@ -44,7 +44,7 @@ type Error interface {
 
 // BatchError is a batch of errors which also wraps lower level errors with
 // code, message, and original errors. Calling Error() will include all errors
-// that occured in the batch.
+// that occurred in the batch.
 //
 // Deprecated: Replaced with BatchedErrors. Only defined for backwards
 // compatibility.
@@ -64,7 +64,7 @@ type BatchError interface {
 
 // BatchedErrors is a batch of errors which also wraps lower level errors with
 // code, message, and original errors. Calling Error() will include all errors
-// that occured in the batch.
+// that occurred in the batch.
 //
 // Replaces BatchError
 type BatchedErrors interface {

vendor/github.com/aws/aws-sdk-go/aws/awserr/types.go

@@ -98,7 +98,7 @@ func (b baseError) OrigErr() error {
 			return NewBatchError(err.Code(), err.Message(), b.errs[1:])
 		}
 		return NewBatchError("BatchedErrors",
-			"multiple errors occured", b.errs)
+			"multiple errors occurred", b.errs)
 	}
 }
 

vendor/github.com/aws/aws-sdk-go/aws/awsutil/copy.go

@@ -3,6 +3,7 @@ package awsutil
 import (
 	"io"
 	"reflect"
+	"time"
 )
 
 // Copy deeply copies a src structure to dst. Useful for copying request and
@@ -49,7 +50,14 @@ func rcopy(dst, src reflect.Value, root bool) {
 		} else {
 			e := src.Type().Elem()
 			if dst.CanSet() && !src.IsNil() {
+				if _, ok := src.Interface().(*time.Time); !ok {
 					dst.Set(reflect.New(e))
+				} else {
+					tempValue := reflect.New(e)
+					tempValue.Elem().Set(src.Elem())
+					// Sets time.Time's unexported values
+					dst.Set(tempValue)
+				}
 			}
 			if src.Elem().IsValid() {
 				// Keep the current root state since the depth hasn't changed

vendor/github.com/aws/aws-sdk-go/aws/awsutil/path_value.go

@@ -106,8 +106,8 @@ func rValuesAtPath(v interface{}, path string, createPath, caseSensitive, nilTer
 
 		if indexStar || index != nil {
 			nextvals = []reflect.Value{}
-			for _, value := range values {
+			for _, valItem := range values {
-				value := reflect.Indirect(value)
+				value := reflect.Indirect(valItem)
 				if value.Kind() != reflect.Slice {
 					continue
 				}

vendor/github.com/aws/aws-sdk-go/aws/awsutil/prettify.go

@@ -61,6 +61,12 @@ func prettify(v reflect.Value, indent int, buf *bytes.Buffer) {
 
 		buf.WriteString("\n" + strings.Repeat(" ", indent) + "}")
 	case reflect.Slice:
+		strtype := v.Type().String()
+		if strtype == "[]uint8" {
+			fmt.Fprintf(buf, "<binary> len %d", v.Len())
+			break
+		}
+
 		nl, id, id2 := "", "", ""
 		if v.Len() > 3 {
 			nl, id, id2 = "\n", strings.Repeat(" ", indent), strings.Repeat(" ", indent+2)

vendor/github.com/aws/aws-sdk-go/aws/client/client.go

@@ -2,7 +2,6 @@ package client
 
 import (
 	"fmt"
-	"io/ioutil"
 	"net/http/httputil"
 
 	"github.com/aws/aws-sdk-go/aws"
@@ -14,7 +13,9 @@ import (
 type Config struct {
 	Config        *aws.Config
 	Handlers      request.Handlers
-	Endpoint, SigningRegion string
+	Endpoint      string
+	SigningRegion string
+	SigningName   string
 }
 
 // ConfigProvider provides a generic way for a service client to receive
@@ -87,16 +88,24 @@ const logReqMsg = `DEBUG: Request %s/%s Details:
 %s
 -----------------------------------------------------`
 
+const logReqErrMsg = `DEBUG ERROR: Request %s/%s:
+---[ REQUEST DUMP ERROR ]-----------------------------
+%s
+-----------------------------------------------------`
+
 func logRequest(r *request.Request) {
 	logBody := r.Config.LogLevel.Matches(aws.LogDebugWithHTTPBody)
-	dumpedBody, _ := httputil.DumpRequestOut(r.HTTPRequest, logBody)
+	dumpedBody, err := httputil.DumpRequestOut(r.HTTPRequest, logBody)
+	if err != nil {
+		r.Config.Logger.Log(fmt.Sprintf(logReqErrMsg, r.ClientInfo.ServiceName, r.Operation.Name, err))
+		return
+	}
 
 	if logBody {
 		// Reset the request body because dumpRequest will re-wrap the r.HTTPRequest's
 		// Body as a NoOpCloser and will not be reset after read by the HTTP
 		// client reader.
-		r.Body.Seek(r.BodyStart, 0)
+		r.ResetBody()
-		r.HTTPRequest.Body = ioutil.NopCloser(r.Body)
 	}
 
 	r.Config.Logger.Log(fmt.Sprintf(logReqMsg, r.ClientInfo.ServiceName, r.Operation.Name, string(dumpedBody)))
@@ -107,11 +116,21 @@ const logRespMsg = `DEBUG: Response %s/%s Details:
 %s
 -----------------------------------------------------`
 
+const logRespErrMsg = `DEBUG ERROR: Response %s/%s:
+---[ RESPONSE DUMP ERROR ]-----------------------------
+%s
+-----------------------------------------------------`
+
 func logResponse(r *request.Request) {
 	var msg = "no response data"
 	if r.HTTPResponse != nil {
 		logBody := r.Config.LogLevel.Matches(aws.LogDebugWithHTTPBody)
-		dumpedBody, _ := httputil.DumpResponse(r.HTTPResponse, logBody)
+		dumpedBody, err := httputil.DumpResponse(r.HTTPResponse, logBody)
+		if err != nil {
+			r.Config.Logger.Log(fmt.Sprintf(logRespErrMsg, r.ClientInfo.ServiceName, r.Operation.Name, err))
+			return
+		}
+
 		msg = string(dumpedBody)
 	} else if r.Error != nil {
 		msg = r.Error.Error()

vendor/github.com/aws/aws-sdk-go/aws/config.go

@@ -5,26 +5,39 @@ import (
 	"time"
 
 	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/endpoints"
 )
 
-// UseServiceDefaultRetries instructs the config to use the service's own default
+// UseServiceDefaultRetries instructs the config to use the service's own
-// number of retries. This will be the default action if Config.MaxRetries
+// default number of retries. This will be the default action if
-// is nil also.
+// Config.MaxRetries is nil also.
 const UseServiceDefaultRetries = -1
 
-// RequestRetryer is an alias for a type that implements the request.Retryer interface.
+// RequestRetryer is an alias for a type that implements the request.Retryer
+// interface.
 type RequestRetryer interface{}
 
 // A Config provides service configuration for service clients. By default,
-// all clients will use the {defaults.DefaultConfig} structure.
+// all clients will use the defaults.DefaultConfig tructure.
+//
+//     // Create Session with MaxRetry configuration to be shared by multiple
+//     // service clients.
+//     sess, err := session.NewSession(&aws.Config{
+//         MaxRetries: aws.Int(3),
+//     })
+//
+//     // Create S3 service client with a specific Region.
+//     svc := s3.New(sess, &aws.Config{
+//         Region: aws.String("us-west-2"),
+//     })
 type Config struct {
 	// Enables verbose error printing of all credential chain errors.
-	// Should be used when wanting to see all errors while attempting to retreive
+	// Should be used when wanting to see all errors while attempting to
-	// credentials.
+	// retrieve credentials.
 	CredentialsChainVerboseErrors *bool
 
-	// The credentials object to use when signing requests. Defaults to
+	// The credentials object to use when signing requests. Defaults to a
-	// a chain of credential providers to search for credentials in environment
+	// chain of credential providers to search for credentials in environment
 	// variables, shared credential file, and EC2 Instance Roles.
 	Credentials *credentials.Credentials
 
@@ -36,6 +49,10 @@ type Config struct {
 	//   endpoint for a client.
 	Endpoint *string
 
+	// The resolver to use for looking up endpoints for AWS service clients
+	// to use based on region.
+	EndpointResolver endpoints.Resolver
+
 	// The region to send requests to. This parameter is required and must
 	// be configured globally or on a per-client basis unless otherwise
 	// noted. A full list of regions is found in the "Regions and Endpoints"
@@ -63,11 +80,12 @@ type Config struct {
 	Logger Logger
 
 	// The maximum number of times that a request will be retried for failures.
-	// Defaults to -1, which defers the max retry setting to the service specific
+	// Defaults to -1, which defers the max retry setting to the service
-	// configuration.
+	// specific configuration.
 	MaxRetries *int
 
-	// Retryer guides how HTTP requests should be retried in case of recoverable failures.
+	// Retryer guides how HTTP requests should be retried in case of
+	// recoverable failures.
 	//
 	// When nil or the value does not implement the request.Retryer interface,
 	// the request.DefaultRetryer will be used.
@@ -82,8 +100,8 @@ type Config struct {
 	//
 	Retryer RequestRetryer
 
-	// Disables semantic parameter validation, which validates input for missing
+	// Disables semantic parameter validation, which validates input for
-	// required fields and/or other semantic request input errors.
+	// missing required fields and/or other semantic request input errors.
 	DisableParamValidation *bool
 
 	// Disables the computation of request and response checksums, e.g.,
@@ -91,8 +109,8 @@ type Config struct {
 	DisableComputeChecksums *bool
 
 	// Set this to `true` to force the request to use path-style addressing,
-	// i.e., `http://s3.amazonaws.com/BUCKET/KEY`. By default, the S3 client will
+	// i.e., `http://s3.amazonaws.com/BUCKET/KEY`. By default, the S3 client
-	// use virtual hosted bucket addressing when possible
+	// will use virtual hosted bucket addressing when possible
 	// (`http://BUCKET.s3.amazonaws.com/KEY`).
 	//
 	// @note This configuration option is specific to the Amazon S3 service.
@@ -109,49 +127,94 @@ type Config struct {
 	// http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPUT.html
 	//
 	// 100-Continue is only enabled for Go 1.6 and above. See `http.Transport`'s
-	// `ExpectContinueTimeout` for information on adjusting the continue wait timeout.
+	// `ExpectContinueTimeout` for information on adjusting the continue wait
-	// https://golang.org/pkg/net/http/#Transport
+	// timeout. https://golang.org/pkg/net/http/#Transport
 	//
-	// You should use this flag to disble 100-Continue if you experiance issues
+	// You should use this flag to disble 100-Continue if you experience issues
-	// with proxies or thrid party S3 compatible services.
+	// with proxies or third party S3 compatible services.
 	S3Disable100Continue *bool
 
-	// Set this to `true` to enable S3 Accelerate feature. For all operations compatible
+	// Set this to `true` to enable S3 Accelerate feature. For all operations
-	// with S3 Accelerate will use the accelerate endpoint for requests. Requests not compatible
+	// compatible with S3 Accelerate will use the accelerate endpoint for
-	// will fall back to normal S3 requests.
+	// requests. Requests not compatible will fall back to normal S3 requests.
 	//
-	// The bucket must be enable for accelerate to be used with S3 client with accelerate
+	// The bucket must be enable for accelerate to be used with S3 client with
-	// enabled. If the bucket is not enabled for accelerate an error will be returned.
+	// accelerate enabled. If the bucket is not enabled for accelerate an error
-	// The bucket name must be DNS compatible to also work with accelerate.
+	// will be returned. The bucket name must be DNS compatible to also work
+	// with accelerate.
 	S3UseAccelerate *bool
 
 	// Set this to `true` to disable the EC2Metadata client from overriding the
-	// default http.Client's Timeout. This is helpful if you do not want the EC2Metadata
+	// default http.Client's Timeout. This is helpful if you do not want the
-	// client to create a new http.Client. This options is only meaningful if you're not
+	// EC2Metadata client to create a new http.Client. This options is only
-	// already using a custom HTTP client with the SDK. Enabled by default.
+	// meaningful if you're not already using a custom HTTP client with the
+	// SDK. Enabled by default.
 	//
-	// Must be set and provided to the session.New() in order to disable the EC2Metadata
+	// Must be set and provided to the session.NewSession() in order to disable
-	// overriding the timeout for default credentials chain.
+	// the EC2Metadata overriding the timeout for default credentials chain.
 	//
 	// Example:
-	//    sess := session.New(aws.NewConfig().WithEC2MetadataDiableTimeoutOverride(true))
+	//    sess, err := session.NewSession(aws.NewConfig().WithEC2MetadataDiableTimeoutOverride(true))
+	//
 	//    svc := s3.New(sess)
 	//
 	EC2MetadataDisableTimeoutOverride *bool
 
+	// Instructs the endpiont to be generated for a service client to
+	// be the dual stack endpoint. The dual stack endpoint will support
+	// both IPv4 and IPv6 addressing.
+	//
+	// Setting this for a service which does not support dual stack will fail
+	// to make requets. It is not recommended to set this value on the session
+	// as it will apply to all service clients created with the session. Even
+	// services which don't support dual stack endpoints.
+	//
+	// If the Endpoint config value is also provided the UseDualStack flag
+	// will be ignored.
+	//
+	// Only supported with.
+	//
+	//     sess, err := session.NewSession()
+	//
+	//     svc := s3.New(sess, &aws.Config{
+	//         UseDualStack: aws.Bool(true),
+	//     })
+	UseDualStack *bool
+
 	// SleepDelay is an override for the func the SDK will call when sleeping
 	// during the lifecycle of a request. Specifically this will be used for
 	// request delays. This value should only be used for testing. To adjust
 	// the delay of a request see the aws/client.DefaultRetryer and
 	// aws/request.Retryer.
 	SleepDelay func(time.Duration)
+
+	// DisableRestProtocolURICleaning will not clean the URL path when making rest protocol requests.
+	// Will default to false. This would only be used for empty directory names in s3 requests.
+	//
+	// Example:
+	//    sess, err := session.NewSession(&aws.Config{DisableRestProtocolURICleaning: aws.Bool(true))
+	//
+	//    svc := s3.New(sess)
+	//    out, err := svc.GetObject(&s3.GetObjectInput {
+	//    	Bucket: aws.String("bucketname"),
+	//    	Key: aws.String("//foo//bar//moo"),
+	//    })
+	DisableRestProtocolURICleaning *bool
 }
 
-// NewConfig returns a new Config pointer that can be chained with builder methods to
+// NewConfig returns a new Config pointer that can be chained with builder
-// set multiple configuration values inline without using pointers.
+// methods to set multiple configuration values inline without using pointers.
 //
-//     sess := session.New(aws.NewConfig().WithRegion("us-west-2").WithMaxRetries(10))
+//     // Create Session with MaxRetry configuration to be shared by multiple
+//     // service clients.
+//     sess, err := session.NewSession(aws.NewConfig().
+//         WithMaxRetries(3),
+//     )
 //
+//     // Create S3 service client with a specific Region.
+//     svc := s3.New(sess, aws.NewConfig().
+//         WithRegion("us-west-2"),
+//     )
 func NewConfig() *Config {
 	return &Config{}
 }
@@ -177,6 +240,13 @@ func (c *Config) WithEndpoint(endpoint string) *Config {
 	return c
 }
 
+// WithEndpointResolver sets a config EndpointResolver value returning a
+// Config pointer for chaining.
+func (c *Config) WithEndpointResolver(resolver endpoints.Resolver) *Config {
+	c.EndpointResolver = resolver
+	return c
+}
+
 // WithRegion sets a config Region value returning a Config pointer for
 // chaining.
 func (c *Config) WithRegion(region string) *Config {
@@ -254,6 +324,13 @@ func (c *Config) WithS3UseAccelerate(enable bool) *Config {
 	return c
 }
 
+// WithUseDualStack sets a config UseDualStack value returning a Config
+// pointer for chaining.
+func (c *Config) WithUseDualStack(enable bool) *Config {
+	c.UseDualStack = &enable
+	return c
+}
+
 // WithEC2MetadataDisableTimeoutOverride sets a config EC2MetadataDisableTimeoutOverride value
 // returning a Config pointer for chaining.
 func (c *Config) WithEC2MetadataDisableTimeoutOverride(enable bool) *Config {
@@ -292,6 +369,10 @@ func mergeInConfig(dst *Config, other *Config) {
 		dst.Endpoint = other.Endpoint
 	}
 
+	if other.EndpointResolver != nil {
+		dst.EndpointResolver = other.EndpointResolver
+	}
+
 	if other.Region != nil {
 		dst.Region = other.Region
 	}
@@ -340,6 +421,10 @@ func mergeInConfig(dst *Config, other *Config) {
 		dst.S3UseAccelerate = other.S3UseAccelerate
 	}
 
+	if other.UseDualStack != nil {
+		dst.UseDualStack = other.UseDualStack
+	}
+
 	if other.EC2MetadataDisableTimeoutOverride != nil {
 		dst.EC2MetadataDisableTimeoutOverride = other.EC2MetadataDisableTimeoutOverride
 	}
@@ -347,6 +432,10 @@ func mergeInConfig(dst *Config, other *Config) {
 	if other.SleepDelay != nil {
 		dst.SleepDelay = other.SleepDelay
 	}
+
+	if other.DisableRestProtocolURICleaning != nil {
+		dst.DisableRestProtocolURICleaning = other.DisableRestProtocolURICleaning
+	}
 }
 
 // Copy will return a shallow copy of the Config object. If any additional

vendor/github.com/aws/aws-sdk-go/aws/corehandlers/handlers.go

@@ -10,9 +10,11 @@ import (
 	"regexp"
 	"runtime"
 	"strconv"
+	"time"
 
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/credentials"
 	"github.com/aws/aws-sdk-go/aws/request"
 )
 
@@ -67,6 +69,34 @@ var SDKVersionUserAgentHandler = request.NamedHandler{
 
 var reStatusCode = regexp.MustCompile(`^(\d{3})`)
 
+// ValidateReqSigHandler is a request handler to ensure that the request's
+// signature doesn't expire before it is sent. This can happen when a request
+// is built and signed signficantly before it is sent. Or significant delays
+// occur whne retrying requests that would cause the signature to expire.
+var ValidateReqSigHandler = request.NamedHandler{
+	Name: "core.ValidateReqSigHandler",
+	Fn: func(r *request.Request) {
+		// Unsigned requests are not signed
+		if r.Config.Credentials == credentials.AnonymousCredentials {
+			return
+		}
+
+		signedTime := r.Time
+		if !r.LastSignedAt.IsZero() {
+			signedTime = r.LastSignedAt
+		}
+
+		// 10 minutes to allow for some clock skew/delays in transmission.
+		// Would be improved with aws/aws-sdk-go#423
+		if signedTime.Add(10 * time.Minute).After(time.Now()) {
+			return
+		}
+
+		fmt.Println("request expired, resigning")
+		r.Sign()
+	},
+}
+
 // SendHandler is a request handler to send service request using HTTP client.
 var SendHandler = request.NamedHandler{Name: "core.SendHandler", Fn: func(r *request.Request) {
 	var err error

vendor/github.com/aws/aws-sdk-go/aws/credentials/chain_provider.go

@@ -34,7 +34,7 @@ var (
 //
 // Example of ChainProvider to be used with an EnvProvider and EC2RoleProvider.
 // In this example EnvProvider will first check if any credentials are available
-// vai the environment variables. If there are none ChainProvider will check
+// via the environment variables. If there are none ChainProvider will check
 // the next Provider in the list, EC2RoleProvider in this case. If EC2RoleProvider
 // does not return any credentials ChainProvider will return the error
 // ErrNoValidProvidersFoundInChain

vendor/github.com/aws/aws-sdk-go/aws/credentials/ec2rolecreds/ec2_role_provider.go

@@ -111,7 +111,7 @@ func (m *EC2RoleProvider) Retrieve() (credentials.Value, error) {
 	}, nil
 }
 
-// A ec2RoleCredRespBody provides the shape for unmarshalling credential
+// A ec2RoleCredRespBody provides the shape for unmarshaling credential
 // request responses.
 type ec2RoleCredRespBody struct {
 	// Success State

vendor/github.com/aws/aws-sdk-go/aws/credentials/endpointcreds/provider.go

@@ -0,0 +1,191 @@
+// Package endpointcreds provides support for retrieving credentials from an
+// arbitrary HTTP endpoint.
+//
+// The credentials endpoint Provider can receive both static and refreshable
+// credentials that will expire. Credentials are static when an "Expiration"
+// value is not provided in the endpoint's response.
+//
+// Static credentials will never expire once they have been retrieved. The format
+// of the static credentials response:
+//    {
+//        "AccessKeyId" : "MUA...",
+//        "SecretAccessKey" : "/7PC5om....",
+//    }
+//
+// Refreshable credentials will expire within the "ExpiryWindow" of the Expiration
+// value in the response. The format of the refreshable credentials response:
+//    {
+//        "AccessKeyId" : "MUA...",
+//        "SecretAccessKey" : "/7PC5om....",
+//        "Token" : "AQoDY....=",
+//        "Expiration" : "2016-02-25T06:03:31Z"
+//    }
+//
+// Errors should be returned in the following format and only returned with 400
+// or 500 HTTP status codes.
+//    {
+//        "code": "ErrorCode",
+//        "message": "Helpful error message."
+//    }
+package endpointcreds
+
+import (
+	"encoding/json"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/client"
+	"github.com/aws/aws-sdk-go/aws/client/metadata"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/request"
+)
+
+// ProviderName is the name of the credentials provider.
+const ProviderName = `CredentialsEndpointProvider`
+
+// Provider satisfies the credentials.Provider interface, and is a client to
+// retrieve credentials from an arbitrary endpoint.
+type Provider struct {
+	staticCreds bool
+	credentials.Expiry
+
+	// Requires a AWS Client to make HTTP requests to the endpoint with.
+	// the Endpoint the request will be made to is provided by the aws.Config's
+	// Endpoint value.
+	Client *client.Client
+
+	// ExpiryWindow will allow the credentials to trigger refreshing prior to
+	// the credentials actually expiring. This is beneficial so race conditions
+	// with expiring credentials do not cause request to fail unexpectedly
+	// due to ExpiredTokenException exceptions.
+	//
+	// So a ExpiryWindow of 10s would cause calls to IsExpired() to return true
+	// 10 seconds before the credentials are actually expired.
+	//
+	// If ExpiryWindow is 0 or less it will be ignored.
+	ExpiryWindow time.Duration
+}
+
+// NewProviderClient returns a credentials Provider for retrieving AWS credentials
+// from arbitrary endpoint.
+func NewProviderClient(cfg aws.Config, handlers request.Handlers, endpoint string, options ...func(*Provider)) credentials.Provider {
+	p := &Provider{
+		Client: client.New(
+			cfg,
+			metadata.ClientInfo{
+				ServiceName: "CredentialsEndpoint",
+				Endpoint:    endpoint,
+			},
+			handlers,
+		),
+	}
+
+	p.Client.Handlers.Unmarshal.PushBack(unmarshalHandler)
+	p.Client.Handlers.UnmarshalError.PushBack(unmarshalError)
+	p.Client.Handlers.Validate.Clear()
+	p.Client.Handlers.Validate.PushBack(validateEndpointHandler)
+
+	for _, option := range options {
+		option(p)
+	}
+
+	return p
+}
+
+// NewCredentialsClient returns a Credentials wrapper for retrieving credentials
+// from an arbitrary endpoint concurrently. The client will request the
+func NewCredentialsClient(cfg aws.Config, handlers request.Handlers, endpoint string, options ...func(*Provider)) *credentials.Credentials {
+	return credentials.NewCredentials(NewProviderClient(cfg, handlers, endpoint, options...))
+}
+
+// IsExpired returns true if the credentials retrieved are expired, or not yet
+// retrieved.
+func (p *Provider) IsExpired() bool {
+	if p.staticCreds {
+		return false
+	}
+	return p.Expiry.IsExpired()
+}
+
+// Retrieve will attempt to request the credentials from the endpoint the Provider
+// was configured for. And error will be returned if the retrieval fails.
+func (p *Provider) Retrieve() (credentials.Value, error) {
+	resp, err := p.getCredentials()
+	if err != nil {
+		return credentials.Value{ProviderName: ProviderName},
+			awserr.New("CredentialsEndpointError", "failed to load credentials", err)
+	}
+
+	if resp.Expiration != nil {
+		p.SetExpiration(*resp.Expiration, p.ExpiryWindow)
+	} else {
+		p.staticCreds = true
+	}
+
+	return credentials.Value{
+		AccessKeyID:     resp.AccessKeyID,
+		SecretAccessKey: resp.SecretAccessKey,
+		SessionToken:    resp.Token,
+		ProviderName:    ProviderName,
+	}, nil
+}
+
+type getCredentialsOutput struct {
+	Expiration      *time.Time
+	AccessKeyID     string
+	SecretAccessKey string
+	Token           string
+}
+
+type errorOutput struct {
+	Code    string `json:"code"`
+	Message string `json:"message"`
+}
+
+func (p *Provider) getCredentials() (*getCredentialsOutput, error) {
+	op := &request.Operation{
+		Name:       "GetCredentials",
+		HTTPMethod: "GET",
+	}
+
+	out := &getCredentialsOutput{}
+	req := p.Client.NewRequest(op, nil, out)
+	req.HTTPRequest.Header.Set("Accept", "application/json")
+
+	return out, req.Send()
+}
+
+func validateEndpointHandler(r *request.Request) {
+	if len(r.ClientInfo.Endpoint) == 0 {
+		r.Error = aws.ErrMissingEndpoint
+	}
+}
+
+func unmarshalHandler(r *request.Request) {
+	defer r.HTTPResponse.Body.Close()
+
+	out := r.Data.(*getCredentialsOutput)
+	if err := json.NewDecoder(r.HTTPResponse.Body).Decode(&out); err != nil {
+		r.Error = awserr.New("SerializationError",
+			"failed to decode endpoint credentials",
+			err,
+		)
+	}
+}
+
+func unmarshalError(r *request.Request) {
+	defer r.HTTPResponse.Body.Close()
+
+	var errOut errorOutput
+	if err := json.NewDecoder(r.HTTPResponse.Body).Decode(&errOut); err != nil {
+		r.Error = awserr.New("SerializationError",
+			"failed to decode endpoint credentials",
+			err,
+		)
+	}
+
+	// Response body format is not consistent between metadata endpoints.
+	// Grab the error message as a string and include that as the source error
+	r.Error = awserr.New(errOut.Code, errOut.Message, nil)
+}

vendor/github.com/aws/aws-sdk-go/aws/credentials/static_provider.go

@@ -30,13 +30,22 @@ func NewStaticCredentials(id, secret, token string) *Credentials {
 	}})
 }
 
+// NewStaticCredentialsFromCreds returns a pointer to a new Credentials object
+// wrapping the static credentials value provide. Same as NewStaticCredentials
+// but takes the creds Value instead of individual fields
+func NewStaticCredentialsFromCreds(creds Value) *Credentials {
+	return NewCredentials(&StaticProvider{Value: creds})
+}
+
 // Retrieve returns the credentials or error if the credentials are invalid.
 func (s *StaticProvider) Retrieve() (Value, error) {
 	if s.AccessKeyID == "" || s.SecretAccessKey == "" {
 		return Value{ProviderName: StaticProviderName}, ErrStaticCredentialsEmpty
 	}
 
+	if len(s.Value.ProviderName) == 0 {
 		s.Value.ProviderName = StaticProviderName
+	}
 	return s.Value, nil
 }
 

vendor/github.com/aws/aws-sdk-go/aws/credentials/stscreds/assume_role_provider.go

@@ -0,0 +1,161 @@
+// Package stscreds are credential Providers to retrieve STS AWS credentials.
+//
+// STS provides multiple ways to retrieve credentials which can be used when making
+// future AWS service API operation calls.
+package stscreds
+
+import (
+	"fmt"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/client"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/service/sts"
+)
+
+// ProviderName provides a name of AssumeRole provider
+const ProviderName = "AssumeRoleProvider"
+
+// AssumeRoler represents the minimal subset of the STS client API used by this provider.
+type AssumeRoler interface {
+	AssumeRole(input *sts.AssumeRoleInput) (*sts.AssumeRoleOutput, error)
+}
+
+// DefaultDuration is the default amount of time in minutes that the credentials
+// will be valid for.
+var DefaultDuration = time.Duration(15) * time.Minute
+
+// AssumeRoleProvider retrieves temporary credentials from the STS service, and
+// keeps track of their expiration time. This provider must be used explicitly,
+// as it is not included in the credentials chain.
+type AssumeRoleProvider struct {
+	credentials.Expiry
+
+	// STS client to make assume role request with.
+	Client AssumeRoler
+
+	// Role to be assumed.
+	RoleARN string
+
+	// Session name, if you wish to reuse the credentials elsewhere.
+	RoleSessionName string
+
+	// Expiry duration of the STS credentials. Defaults to 15 minutes if not set.
+	Duration time.Duration
+
+	// Optional ExternalID to pass along, defaults to nil if not set.
+	ExternalID *string
+
+	// The policy plain text must be 2048 bytes or shorter. However, an internal
+	// conversion compresses it into a packed binary format with a separate limit.
+	// The PackedPolicySize response element indicates by percentage how close to
+	// the upper size limit the policy is, with 100% equaling the maximum allowed
+	// size.
+	Policy *string
+
+	// The identification number of the MFA device that is associated with the user
+	// who is making the AssumeRole call. Specify this value if the trust policy
+	// of the role being assumed includes a condition that requires MFA authentication.
+	// The value is either the serial number for a hardware device (such as GAHT12345678)
+	// or an Amazon Resource Name (ARN) for a virtual device (such as arn:aws:iam::123456789012:mfa/user).
+	SerialNumber *string
+
+	// The value provided by the MFA device, if the trust policy of the role being
+	// assumed requires MFA (that is, if the policy includes a condition that tests
+	// for MFA). If the role being assumed requires MFA and if the TokenCode value
+	// is missing or expired, the AssumeRole call returns an "access denied" error.
+	TokenCode *string
+
+	// ExpiryWindow will allow the credentials to trigger refreshing prior to
+	// the credentials actually expiring. This is beneficial so race conditions
+	// with expiring credentials do not cause request to fail unexpectedly
+	// due to ExpiredTokenException exceptions.
+	//
+	// So a ExpiryWindow of 10s would cause calls to IsExpired() to return true
+	// 10 seconds before the credentials are actually expired.
+	//
+	// If ExpiryWindow is 0 or less it will be ignored.
+	ExpiryWindow time.Duration
+}
+
+// NewCredentials returns a pointer to a new Credentials object wrapping the
+// AssumeRoleProvider. The credentials will expire every 15 minutes and the
+// role will be named after a nanosecond timestamp of this operation.
+//
+// Takes a Config provider to create the STS client. The ConfigProvider is
+// satisfied by the session.Session type.
+func NewCredentials(c client.ConfigProvider, roleARN string, options ...func(*AssumeRoleProvider)) *credentials.Credentials {
+	p := &AssumeRoleProvider{
+		Client:   sts.New(c),
+		RoleARN:  roleARN,
+		Duration: DefaultDuration,
+	}
+
+	for _, option := range options {
+		option(p)
+	}
+
+	return credentials.NewCredentials(p)
+}
+
+// NewCredentialsWithClient returns a pointer to a new Credentials object wrapping the
+// AssumeRoleProvider. The credentials will expire every 15 minutes and the
+// role will be named after a nanosecond timestamp of this operation.
+//
+// Takes an AssumeRoler which can be satisfiede by the STS client.
+func NewCredentialsWithClient(svc AssumeRoler, roleARN string, options ...func(*AssumeRoleProvider)) *credentials.Credentials {
+	p := &AssumeRoleProvider{
+		Client:   svc,
+		RoleARN:  roleARN,
+		Duration: DefaultDuration,
+	}
+
+	for _, option := range options {
+		option(p)
+	}
+
+	return credentials.NewCredentials(p)
+}
+
+// Retrieve generates a new set of temporary credentials using STS.
+func (p *AssumeRoleProvider) Retrieve() (credentials.Value, error) {
+
+	// Apply defaults where parameters are not set.
+	if p.RoleSessionName == "" {
+		// Try to work out a role name that will hopefully end up unique.
+		p.RoleSessionName = fmt.Sprintf("%d", time.Now().UTC().UnixNano())
+	}
+	if p.Duration == 0 {
+		// Expire as often as AWS permits.
+		p.Duration = DefaultDuration
+	}
+	input := &sts.AssumeRoleInput{
+		DurationSeconds: aws.Int64(int64(p.Duration / time.Second)),
+		RoleArn:         aws.String(p.RoleARN),
+		RoleSessionName: aws.String(p.RoleSessionName),
+		ExternalId:      p.ExternalID,
+	}
+	if p.Policy != nil {
+		input.Policy = p.Policy
+	}
+	if p.SerialNumber != nil && p.TokenCode != nil {
+		input.SerialNumber = p.SerialNumber
+		input.TokenCode = p.TokenCode
+	}
+	roleOutput, err := p.Client.AssumeRole(input)
+
+	if err != nil {
+		return credentials.Value{ProviderName: ProviderName}, err
+	}
+
+	// We will proactively generate new credentials before they expire.
+	p.SetExpiration(*roleOutput.Credentials.Expiration, p.ExpiryWindow)
+
+	return credentials.Value{
+		AccessKeyID:     *roleOutput.Credentials.AccessKeyId,
+		SecretAccessKey: *roleOutput.Credentials.SecretAccessKey,
+		SessionToken:    *roleOutput.Credentials.SessionToken,
+		ProviderName:    ProviderName,
+	}, nil
+}

vendor/github.com/aws/aws-sdk-go/aws/defaults/defaults.go

@@ -8,6 +8,7 @@
 package defaults
 
 import (
+	"fmt"
 	"net/http"
 	"os"
 	"time"
@@ -16,9 +17,10 @@ import (
 	"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"
-	"github.com/aws/aws-sdk-go/private/endpoints"
 )
 
 // A Defaults provides a collection of default values for SDK clients.
@@ -54,7 +56,8 @@ func Config() *aws.Config {
 		WithMaxRetries(aws.UseServiceDefaultRetries).
 		WithLogger(aws.NewDefaultLogger()).
 		WithLogLevel(aws.LogOff).
-		WithSleepDelay(time.Sleep)
+		WithSleepDelay(time.Sleep).
+		WithEndpointResolver(endpoints.DefaultResolver())
 }
 
 // Handlers returns the default request handlers.
@@ -70,6 +73,7 @@ func Handlers() request.Handlers {
 	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)
@@ -83,16 +87,48 @@ func Handlers() request.Handlers {
 // 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 {
-	endpoint, signingRegion := endpoints.EndpointForRegion(ec2metadata.ServiceName, *cfg.Region, true)
-
 	return credentials.NewCredentials(&credentials.ChainProvider{
 		VerboseErrors: aws.BoolValue(cfg.CredentialsChainVerboseErrors),
 		Providers: []credentials.Provider{
 			&credentials.EnvProvider{},
 			&credentials.SharedCredentialsProvider{Filename: "", Profile: ""},
-			&ec2rolecreds.EC2RoleProvider{
+			RemoteCredProvider(*cfg, handlers),
-				Client:       ec2metadata.NewClient(*cfg, handlers, endpoint, signingRegion),
-				ExpiryWindow: 5 * time.Minute,
 		},
-		}})
+	})
+}
+
+// RemoteCredProvider returns a credenitials provider for the default remote
+// endpoints such as EC2 or ECS Roles.
+func RemoteCredProvider(cfg aws.Config, handlers request.Handlers) credentials.Provider {
+	ecsCredURI := os.Getenv("AWS_CONTAINER_CREDENTIALS_RELATIVE_URI")
+
+	if len(ecsCredURI) > 0 {
+		return ecsCredProvider(cfg, handlers, ecsCredURI)
+	}
+
+	return ec2RoleProvider(cfg, handlers)
+}
+
+func ecsCredProvider(cfg aws.Config, handlers request.Handlers, uri string) credentials.Provider {
+	const host = `169.254.170.2`
+
+	return endpointcreds.NewProviderClient(cfg, handlers,
+		fmt.Sprintf("http://%s%s", host, uri),
+		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,
+	}
 }

vendor/github.com/aws/aws-sdk-go/aws/ec2metadata/api.go

@@ -3,6 +3,7 @@ package ec2metadata
 import (
 	"encoding/json"
 	"fmt"
+	"net/http"
 	"path"
 	"strings"
 	"time"
@@ -27,6 +28,27 @@ func (c *EC2Metadata) GetMetadata(p string) (string, error) {
 	return output.Content, req.Send()
 }
 
+// GetUserData returns the userdata that was configured for the service. If
+// there is no user-data setup for the EC2 instance a "NotFoundError" error
+// code will be returned.
+func (c *EC2Metadata) GetUserData() (string, error) {
+	op := &request.Operation{
+		Name:       "GetUserData",
+		HTTPMethod: "GET",
+		HTTPPath:   path.Join("/", "user-data"),
+	}
+
+	output := &metadataOutput{}
+	req := c.NewRequest(op, nil, output)
+	req.Handlers.UnmarshalError.PushBack(func(r *request.Request) {
+		if r.HTTPResponse.StatusCode == http.StatusNotFound {
+			r.Error = awserr.New("NotFoundError", "user-data not found", r.Error)
+		}
+	})
+
+	return output.Content, req.Send()
+}
+
 // GetDynamicData uses the path provided to request information from the EC2
 // instance metadata service for dynamic data. The content will be returned
 // as a string, or error if the request failed.
@@ -111,7 +133,7 @@ func (c *EC2Metadata) Available() bool {
 	return true
 }
 
-// An EC2IAMInfo provides the shape for unmarshalling
+// An EC2IAMInfo provides the shape for unmarshaling
 // an IAM info from the metadata API
 type EC2IAMInfo struct {
 	Code               string
@@ -120,7 +142,7 @@ type EC2IAMInfo struct {
 	InstanceProfileID  string
 }
 
-// An EC2InstanceIdentityDocument provides the shape for unmarshalling
+// An EC2InstanceIdentityDocument provides the shape for unmarshaling
 // an instance identity document
 type EC2InstanceIdentityDocument struct {
 	DevpayProductCodes []string  `json:"devpayProductCodes"`

vendor/github.com/aws/aws-sdk-go/aws/endpoints/decode.go

@@ -0,0 +1,133 @@
+package endpoints
+
+import (
+	"encoding/json"
+	"fmt"
+	"io"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+)
+
+type modelDefinition map[string]json.RawMessage
+
+// A DecodeModelOptions are the options for how the endpoints model definition
+// are decoded.
+type DecodeModelOptions struct {
+	SkipCustomizations bool
+}
+
+// Set combines all of the option functions together.
+func (d *DecodeModelOptions) Set(optFns ...func(*DecodeModelOptions)) {
+	for _, fn := range optFns {
+		fn(d)
+	}
+}
+
+// DecodeModel unmarshals a Regions and Endpoint model definition file into
+// a endpoint Resolver. If the file format is not supported, or an error occurs
+// when unmarshaling the model an error will be returned.
+//
+// Casting the return value of this func to a EnumPartitions will
+// allow you to get a list of the partitions in the order the endpoints
+// will be resolved in.
+//
+//    resolver, err := endpoints.DecodeModel(reader)
+//
+//    partitions := resolver.(endpoints.EnumPartitions).Partitions()
+//    for _, p := range partitions {
+//        // ... inspect partitions
+//    }
+func DecodeModel(r io.Reader, optFns ...func(*DecodeModelOptions)) (Resolver, error) {
+	var opts DecodeModelOptions
+	opts.Set(optFns...)
+
+	// Get the version of the partition file to determine what
+	// unmarshaling model to use.
+	modelDef := modelDefinition{}
+	if err := json.NewDecoder(r).Decode(&modelDef); err != nil {
+		return nil, newDecodeModelError("failed to decode endpoints model", err)
+	}
+
+	var version string
+	if b, ok := modelDef["version"]; ok {
+		version = string(b)
+	} else {
+		return nil, newDecodeModelError("endpoints version not found in model", nil)
+	}
+
+	if version == "3" {
+		return decodeV3Endpoints(modelDef, opts)
+	}
+
+	return nil, newDecodeModelError(
+		fmt.Sprintf("endpoints version %s, not supported", version), nil)
+}
+
+func decodeV3Endpoints(modelDef modelDefinition, opts DecodeModelOptions) (Resolver, error) {
+	b, ok := modelDef["partitions"]
+	if !ok {
+		return nil, newDecodeModelError("endpoints model missing partitions", nil)
+	}
+
+	ps := partitions{}
+	if err := json.Unmarshal(b, &ps); err != nil {
+		return nil, newDecodeModelError("failed to decode endpoints model", err)
+	}
+
+	if opts.SkipCustomizations {
+		return ps, nil
+	}
+
+	// Customization
+	for i := 0; i < len(ps); i++ {
+		p := &ps[i]
+		custAddEC2Metadata(p)
+		custAddS3DualStack(p)
+		custRmIotDataService(p)
+	}
+
+	return ps, nil
+}
+
+func custAddS3DualStack(p *partition) {
+	if p.ID != "aws" {
+		return
+	}
+
+	s, ok := p.Services["s3"]
+	if !ok {
+		return
+	}
+
+	s.Defaults.HasDualStack = boxedTrue
+	s.Defaults.DualStackHostname = "{service}.dualstack.{region}.{dnsSuffix}"
+
+	p.Services["s3"] = s
+}
+
+func custAddEC2Metadata(p *partition) {
+	p.Services["ec2metadata"] = service{
+		IsRegionalized:    boxedFalse,
+		PartitionEndpoint: "aws-global",
+		Endpoints: endpoints{
+			"aws-global": endpoint{
+				Hostname:  "169.254.169.254/latest",
+				Protocols: []string{"http"},
+			},
+		},
+	}
+}
+
+func custRmIotDataService(p *partition) {
+	delete(p.Services, "data.iot")
+}
+
+type decodeModelError struct {
+	awsError
+}
+
+func newDecodeModelError(msg string, err error) decodeModelError {
+	return decodeModelError{
+		awsError: awserr.New("DecodeEndpointsModelError", msg, err),
+	}
+}

vendor/github.com/aws/aws-sdk-go/aws/endpoints/doc.go

@@ -0,0 +1,66 @@
+// Package endpoints provides the types and functionality for defining regions
+// and endpoints, as well as querying those definitions.
+//
+// The SDK's Regions and Endpoints metadata is code generated into the endpoints
+// package, and is accessible via the DefaultResolver function. This function
+// returns a endpoint Resolver will search the metadata and build an associated
+// endpoint if one is found. The default resolver will search all partitions
+// known by the SDK. e.g AWS Standard (aws), AWS China (aws-cn), and
+// AWS GovCloud (US) (aws-us-gov).
+// .
+//
+// Enumerating Regions and Endpoint Metadata
+//
+// Casting the Resolver returned by DefaultResolver to a EnumPartitions interface
+// will allow you to get access to the list of underlying Partitions with the
+// Partitions method. This is helpful if you want to limit the SDK's endpoint
+// resolving to a single partition, or enumerate regions, services, and endpoints
+// in the partition.
+//
+//     resolver := endpoints.DefaultResolver()
+//     partitions := resolver.(endpoints.EnumPartitions).Partitions()
+//
+//     for _, p := range partitions {
+//         fmt.Println("Regions for", p.Name)
+//         for id, _ := range p.Regions() {
+//             fmt.Println("*", id)
+//         }
+//
+//         fmt.Println("Services for", p.Name)
+//         for id, _ := range p.Services() {
+//             fmt.Println("*", id)
+//         }
+//     }
+//
+// Using Custom Endpoints
+//
+// The endpoints package also gives you the ability to use your own logic how
+// endpoints are resolved. This is a great way to define a custom endpoint
+// for select services, without passing that logic down through your code.
+//
+// If a type implements the Resolver interface it can be used to resolve
+// endpoints. To use this with the SDK's Session and Config set the value
+// of the type to the EndpointsResolver field of aws.Config when initializing
+// the session, or service client.
+//
+// In addition the ResolverFunc is a wrapper for a func matching the signature
+// of Resolver.EndpointFor, converting it to a type that satisfies the
+// Resolver interface.
+//
+//
+//     myCustomResolver := func(service, region string, optFns ...func(*endpoints.Options)) (endpoints.ResolvedEndpoint, error) {
+//         if service == endpoints.S3ServiceID {
+//             return endpoints.ResolvedEndpoint{
+//                 URL:           "s3.custom.endpoint.com",
+//                 SigningRegion: "custom-signing-region",
+//             }, nil
+//         }
+//
+//         return endpoints.DefaultResolver().EndpointFor(service, region, optFns...)
+//     }
+//
+//     sess := session.Must(session.NewSession(&aws.Config{
+//         Region:           aws.String("us-west-2"),
+//         EndpointResolver: endpoints.ResolverFunc(myCustomResolver),
+//     }))
+package endpoints

vendor/github.com/aws/aws-sdk-go/aws/endpoints/endpoints.go

@@ -0,0 +1,369 @@
+package endpoints
+
+import (
+	"fmt"
+	"regexp"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+)
+
+// Options provide the configuration needed to direct how the
+// endpoints will be resolved.
+type Options struct {
+	// DisableSSL forces the endpoint to be resolved as HTTP.
+	// instead of HTTPS if the service supports it.
+	DisableSSL bool
+
+	// Sets the resolver to resolve the endpoint as a dualstack endpoint
+	// for the service. If dualstack support for a service is not known and
+	// StrictMatching is not enabled a dualstack endpoint for the service will
+	// be returned. This endpoint may not be valid. If StrictMatching is
+	// enabled only services that are known to support dualstack will return
+	// dualstack endpoints.
+	UseDualStack bool
+
+	// Enables strict matching of services and regions resolved endpoints.
+	// If the partition doesn't enumerate the exact service and region an
+	// error will be returned. This option will prevent returning endpoints
+	// that look valid, but may not resolve to any real endpoint.
+	StrictMatching bool
+}
+
+// Set combines all of the option functions together.
+func (o *Options) Set(optFns ...func(*Options)) {
+	for _, fn := range optFns {
+		fn(o)
+	}
+}
+
+// DisableSSLOption sets the DisableSSL options. Can be used as a functional
+// option when resolving endpoints.
+func DisableSSLOption(o *Options) {
+	o.DisableSSL = true
+}
+
+// UseDualStackOption sets the UseDualStack option. Can be used as a functional
+// option when resolving endpoints.
+func UseDualStackOption(o *Options) {
+	o.UseDualStack = true
+}
+
+// StrictMatchingOption sets the StrictMatching option. Can be used as a functional
+// option when resolving endpoints.
+func StrictMatchingOption(o *Options) {
+	o.StrictMatching = true
+}
+
+// A Resolver provides the interface for functionality to resolve endpoints.
+// The build in Partition and DefaultResolver return value satisfy this interface.
+type Resolver interface {
+	EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error)
+}
+
+// ResolverFunc is a helper utility that wraps a function so it satisfies the
+// Resolver interface. This is useful when you want to add additional endpoint
+// resolving logic, or stub out specific endpoints with custom values.
+type ResolverFunc func(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error)
+
+// EndpointFor wraps the ResolverFunc function to satisfy the Resolver interface.
+func (fn ResolverFunc) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error) {
+	return fn(service, region, opts...)
+}
+
+var schemeRE = regexp.MustCompile("^([^:]+)://")
+
+// AddScheme adds the HTTP or HTTPS schemes to a endpoint URL if there is no
+// scheme. If disableSSL is true HTTP will set HTTP instead of the default HTTPS.
+//
+// If disableSSL is set, it will only set the URL's scheme if the URL does not
+// contain a scheme.
+func AddScheme(endpoint string, disableSSL bool) string {
+	if !schemeRE.MatchString(endpoint) {
+		scheme := "https"
+		if disableSSL {
+			scheme = "http"
+		}
+		endpoint = fmt.Sprintf("%s://%s", scheme, endpoint)
+	}
+
+	return endpoint
+}
+
+// EnumPartitions a provides a way to retrieve the underlying partitions that
+// make up the SDK's default Resolver, or any resolver decoded from a model
+// file.
+//
+// Use this interface with DefaultResolver and DecodeModels to get the list of
+// Partitions.
+type EnumPartitions interface {
+	Partitions() []Partition
+}
+
+// A Partition provides the ability to enumerate the partition's regions
+// and services.
+type Partition struct {
+	id string
+	p  *partition
+}
+
+// ID returns the identifier of the partition.
+func (p *Partition) ID() string { return p.id }
+
+// EndpointFor attempts to resolve the endpoint based on service and region.
+// See Options for information on configuring how the endpoint is resolved.
+//
+// If the service cannot be found in the metadata the UnknownServiceError
+// error will be returned. This validation will occur regardless if
+// StrictMatching is enabled.
+//
+// When resolving endpoints you can choose to enable StrictMatching. This will
+// require the provided service and region to be known by the partition.
+// If the endpoint cannot be strictly resolved an error will be returned. This
+// mode is useful to ensure the endpoint resolved is valid. Without
+// StrictMatching enabled the enpoint returned my look valid but may not work.
+// StrictMatching requires the SDK to be updated if you want to take advantage
+// of new regions and services expantions.
+//
+// Errors that can be returned.
+//   * UnknownServiceError
+//   * UnknownEndpointError
+func (p *Partition) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error) {
+	return p.p.EndpointFor(service, region, opts...)
+}
+
+// Regions returns a map of Regions indexed by their ID. This is useful for
+// enumerating over the regions in a partition.
+func (p *Partition) Regions() map[string]Region {
+	rs := map[string]Region{}
+	for id := range p.p.Regions {
+		rs[id] = Region{
+			id: id,
+			p:  p.p,
+		}
+	}
+
+	return rs
+}
+
+// Services returns a map of Service indexed by their ID. This is useful for
+// enumerating over the services in a partition.
+func (p *Partition) Services() map[string]Service {
+	ss := map[string]Service{}
+	for id := range p.p.Services {
+		ss[id] = Service{
+			id: id,
+			p:  p.p,
+		}
+	}
+
+	return ss
+}
+
+// A Region provides information about a region, and ability to resolve an
+// endpoint from the context of a region, given a service.
+type Region struct {
+	id, desc string
+	p        *partition
+}
+
+// ID returns the region's identifier.
+func (r *Region) ID() string { return r.id }
+
+// ResolveEndpoint resolves an endpoint from the context of the region given
+// a service. See Partition.EndpointFor for usage and errors that can be returned.
+func (r *Region) ResolveEndpoint(service string, opts ...func(*Options)) (ResolvedEndpoint, error) {
+	return r.p.EndpointFor(service, r.id, opts...)
+}
+
+// Services returns a list of all services that are known to be in this region.
+func (r *Region) Services() map[string]Service {
+	ss := map[string]Service{}
+	for id, s := range r.p.Services {
+		if _, ok := s.Endpoints[r.id]; ok {
+			ss[id] = Service{
+				id: id,
+				p:  r.p,
+			}
+		}
+	}
+
+	return ss
+}
+
+// A Service provides information about a service, and ability to resolve an
+// endpoint from the context of a service, given a region.
+type Service struct {
+	id string
+	p  *partition
+}
+
+// ID returns the identifier for the service.
+func (s *Service) ID() string { return s.id }
+
+// ResolveEndpoint resolves an endpoint from the context of a service given
+// a region. See Partition.EndpointFor for usage and errors that can be returned.
+func (s *Service) ResolveEndpoint(region string, opts ...func(*Options)) (ResolvedEndpoint, error) {
+	return s.p.EndpointFor(s.id, region, opts...)
+}
+
+// Endpoints returns a map of Endpoints indexed by their ID for all known
+// endpoints for a service.
+func (s *Service) Endpoints() map[string]Endpoint {
+	es := map[string]Endpoint{}
+	for id := range s.p.Services[s.id].Endpoints {
+		es[id] = Endpoint{
+			id:        id,
+			serviceID: s.id,
+			p:         s.p,
+		}
+	}
+
+	return es
+}
+
+// A Endpoint provides information about endpoints, and provides the ability
+// to resolve that endpoint for the service, and the region the endpoint
+// represents.
+type Endpoint struct {
+	id        string
+	serviceID string
+	p         *partition
+}
+
+// ID returns the identifier for an endpoint.
+func (e *Endpoint) ID() string { return e.id }
+
+// ServiceID returns the identifier the endpoint belongs to.
+func (e *Endpoint) ServiceID() string { return e.serviceID }
+
+// ResolveEndpoint resolves an endpoint from the context of a service and
+// region the endpoint represents. See Partition.EndpointFor for usage and
+// errors that can be returned.
+func (e *Endpoint) ResolveEndpoint(opts ...func(*Options)) (ResolvedEndpoint, error) {
+	return e.p.EndpointFor(e.serviceID, e.id, opts...)
+}
+
+// A ResolvedEndpoint is an endpoint that has been resolved based on a partition
+// service, and region.
+type ResolvedEndpoint struct {
+	// The endpoint URL
+	URL string
+
+	// The region that should be used for signing requests.
+	SigningRegion string
+
+	// The service name that should be used for signing requests.
+	SigningName string
+
+	// The signing method that should be used for signing requests.
+	SigningMethod string
+}
+
+// So that the Error interface type can be included as an anonymous field
+// in the requestError struct and not conflict with the error.Error() method.
+type awsError awserr.Error
+
+// A EndpointNotFoundError is returned when in StrictMatching mode, and the
+// endpoint for the service and region cannot be found in any of the partitions.
+type EndpointNotFoundError struct {
+	awsError
+	Partition string
+	Service   string
+	Region    string
+}
+
+//// NewEndpointNotFoundError builds and returns NewEndpointNotFoundError.
+//func NewEndpointNotFoundError(p, s, r string) EndpointNotFoundError {
+//	return EndpointNotFoundError{
+//		awsError:  awserr.New("EndpointNotFoundError", "unable to find endpoint", nil),
+//		Partition: p,
+//		Service:   s,
+//		Region:    r,
+//	}
+//}
+//
+//// Error returns string representation of the error.
+//func (e EndpointNotFoundError) Error() string {
+//	extra := fmt.Sprintf("partition: %q, service: %q, region: %q",
+//		e.Partition, e.Service, e.Region)
+//	return awserr.SprintError(e.Code(), e.Message(), extra, e.OrigErr())
+//}
+//
+//// String returns the string representation of the error.
+//func (e EndpointNotFoundError) String() string {
+//	return e.Error()
+//}
+
+// A UnknownServiceError is returned when the service does not resolve to an
+// endpoint. Includes a list of all known services for the partition. Returned
+// when a partition does not support the service.
+type UnknownServiceError struct {
+	awsError
+	Partition string
+	Service   string
+	Known     []string
+}
+
+// NewUnknownServiceError builds and returns UnknownServiceError.
+func NewUnknownServiceError(p, s string, known []string) UnknownServiceError {
+	return UnknownServiceError{
+		awsError: awserr.New("UnknownServiceError",
+			"could not resolve endpoint for unknown service", nil),
+		Partition: p,
+		Service:   s,
+		Known:     known,
+	}
+}
+
+// String returns the string representation of the error.
+func (e UnknownServiceError) Error() string {
+	extra := fmt.Sprintf("partition: %q, service: %q",
+		e.Partition, e.Service)
+	if len(e.Known) > 0 {
+		extra += fmt.Sprintf(", known: %v", e.Known)
+	}
+	return awserr.SprintError(e.Code(), e.Message(), extra, e.OrigErr())
+}
+
+// String returns the string representation of the error.
+func (e UnknownServiceError) String() string {
+	return e.Error()
+}
+
+// A UnknownEndpointError is returned when in StrictMatching mode and the
+// service is valid, but the region does not resolve to an endpoint. Includes
+// a list of all known endpoints for the service.
+type UnknownEndpointError struct {
+	awsError
+	Partition string
+	Service   string
+	Region    string
+	Known     []string
+}
+
+// NewUnknownEndpointError builds and returns UnknownEndpointError.
+func NewUnknownEndpointError(p, s, r string, known []string) UnknownEndpointError {
+	return UnknownEndpointError{
+		awsError: awserr.New("UnknownEndpointError",
+			"could not resolve endpoint", nil),
+		Partition: p,
+		Service:   s,
+		Region:    r,
+		Known:     known,
+	}
+}
+
+// String returns the string representation of the error.
+func (e UnknownEndpointError) Error() string {
+	extra := fmt.Sprintf("partition: %q, service: %q, region: %q",
+		e.Partition, e.Service, e.Region)
+	if len(e.Known) > 0 {
+		extra += fmt.Sprintf(", known: %v", e.Known)
+	}
+	return awserr.SprintError(e.Code(), e.Message(), extra, e.OrigErr())
+}
+
+// String returns the string representation of the error.
+func (e UnknownEndpointError) String() string {
+	return e.Error()
+}

vendor/github.com/aws/aws-sdk-go/aws/endpoints/v3model.go

@@ -0,0 +1,301 @@
+package endpoints
+
+import (
+	"fmt"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+type partitions []partition
+
+func (ps partitions) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error) {
+	var opt Options
+	opt.Set(opts...)
+
+	for i := 0; i < len(ps); i++ {
+		if !ps[i].canResolveEndpoint(service, region, opt.StrictMatching) {
+			continue
+		}
+
+		return ps[i].EndpointFor(service, region, opts...)
+	}
+
+	// If loose matching fallback to first partition format to use
+	// when resolving the endpoint.
+	if !opt.StrictMatching && len(ps) > 0 {
+		return ps[0].EndpointFor(service, region, opts...)
+	}
+
+	return ResolvedEndpoint{}, NewUnknownEndpointError("all partitions", service, region, []string{})
+}
+
+// Partitions satisfies the EnumPartitions interface and returns a list
+// of Partitions representing each partition represented in the SDK's
+// endpoints model.
+func (ps partitions) Partitions() []Partition {
+	parts := make([]Partition, 0, len(ps))
+	for i := 0; i < len(ps); i++ {
+		parts = append(parts, ps[i].Partition())
+	}
+
+	return parts
+}
+
+type partition struct {
+	ID          string      `json:"partition"`
+	Name        string      `json:"partitionName"`
+	DNSSuffix   string      `json:"dnsSuffix"`
+	RegionRegex regionRegex `json:"regionRegex"`
+	Defaults    endpoint    `json:"defaults"`
+	Regions     regions     `json:"regions"`
+	Services    services    `json:"services"`
+}
+
+func (p partition) Partition() Partition {
+	return Partition{
+		id: p.ID,
+		p:  &p,
+	}
+}
+
+func (p partition) canResolveEndpoint(service, region string, strictMatch bool) bool {
+	s, hasService := p.Services[service]
+	_, hasEndpoint := s.Endpoints[region]
+
+	if hasEndpoint && hasService {
+		return true
+	}
+
+	if strictMatch {
+		return false
+	}
+
+	return p.RegionRegex.MatchString(region)
+}
+
+func (p partition) EndpointFor(service, region string, opts ...func(*Options)) (resolved ResolvedEndpoint, err error) {
+	var opt Options
+	opt.Set(opts...)
+
+	s, hasService := p.Services[service]
+	if !hasService {
+		return resolved, NewUnknownServiceError(p.ID, service, serviceList(p.Services))
+	}
+
+	e, hasEndpoint := s.endpointForRegion(region)
+	if !hasEndpoint && opt.StrictMatching {
+		return resolved, NewUnknownEndpointError(p.ID, service, region, endpointList(s.Endpoints))
+	}
+
+	defs := []endpoint{p.Defaults, s.Defaults}
+	return e.resolve(service, region, p.DNSSuffix, defs, opt), nil
+}
+
+func serviceList(ss services) []string {
+	list := make([]string, 0, len(ss))
+	for k := range ss {
+		list = append(list, k)
+	}
+	return list
+}
+func endpointList(es endpoints) []string {
+	list := make([]string, 0, len(es))
+	for k := range es {
+		list = append(list, k)
+	}
+	return list
+}
+
+type regionRegex struct {
+	*regexp.Regexp
+}
+
+func (rr *regionRegex) UnmarshalJSON(b []byte) (err error) {
+	// Strip leading and trailing quotes
+	regex, err := strconv.Unquote(string(b))
+	if err != nil {
+		return fmt.Errorf("unable to strip quotes from regex, %v", err)
+	}
+
+	rr.Regexp, err = regexp.Compile(regex)
+	if err != nil {
+		return fmt.Errorf("unable to unmarshal region regex, %v", err)
+	}
+	return nil
+}
+
+type regions map[string]region
+
+type region struct {
+	Description string `json:"description"`
+}
+
+type services map[string]service
+
+type service struct {
+	PartitionEndpoint string    `json:"partitionEndpoint"`
+	IsRegionalized    boxedBool `json:"isRegionalized,omitempty"`
+	Defaults          endpoint  `json:"defaults"`
+	Endpoints         endpoints `json:"endpoints"`
+}
+
+func (s *service) endpointForRegion(region string) (endpoint, bool) {
+	if s.IsRegionalized == boxedFalse {
+		return s.Endpoints[s.PartitionEndpoint], region == s.PartitionEndpoint
+	}
+
+	if e, ok := s.Endpoints[region]; ok {
+		return e, true
+	}
+
+	// Unable to find any matching endpoint, return
+	// blank that will be used for generic endpoint creation.
+	return endpoint{}, false
+}
+
+type endpoints map[string]endpoint
+
+type endpoint struct {
+	Hostname        string          `json:"hostname"`
+	Protocols       []string        `json:"protocols"`
+	CredentialScope credentialScope `json:"credentialScope"`
+
+	// Custom fields not modeled
+	HasDualStack      boxedBool `json:"-"`
+	DualStackHostname string    `json:"-"`
+
+	// Signature Version not used
+	SignatureVersions []string `json:"signatureVersions"`
+
+	// SSLCommonName not used.
+	SSLCommonName string `json:"sslCommonName"`
+}
+
+const (
+	defaultProtocol = "https"
+	defaultSigner   = "v4"
+)
+
+var (
+	protocolPriority = []string{"https", "http"}
+	signerPriority   = []string{"v4", "v2"}
+)
+
+func getByPriority(s []string, p []string, def string) string {
+	if len(s) == 0 {
+		return def
+	}
+
+	for i := 0; i < len(p); i++ {
+		for j := 0; j < len(s); j++ {
+			if s[j] == p[i] {
+				return s[j]
+			}
+		}
+	}
+
+	return s[0]
+}
+
+func (e endpoint) resolve(service, region, dnsSuffix string, defs []endpoint, opts Options) ResolvedEndpoint {
+	var merged endpoint
+	for _, def := range defs {
+		merged.mergeIn(def)
+	}
+	merged.mergeIn(e)
+	e = merged
+
+	hostname := e.Hostname
+
+	// Offset the hostname for dualstack if enabled
+	if opts.UseDualStack && e.HasDualStack == boxedTrue {
+		hostname = e.DualStackHostname
+	}
+
+	u := strings.Replace(hostname, "{service}", service, 1)
+	u = strings.Replace(u, "{region}", region, 1)
+	u = strings.Replace(u, "{dnsSuffix}", dnsSuffix, 1)
+
+	scheme := getEndpointScheme(e.Protocols, opts.DisableSSL)
+	u = fmt.Sprintf("%s://%s", scheme, u)
+
+	signingRegion := e.CredentialScope.Region
+	if len(signingRegion) == 0 {
+		signingRegion = region
+	}
+	signingName := e.CredentialScope.Service
+	if len(signingName) == 0 {
+		signingName = service
+	}
+
+	return ResolvedEndpoint{
+		URL:           u,
+		SigningRegion: signingRegion,
+		SigningName:   signingName,
+		SigningMethod: getByPriority(e.SignatureVersions, signerPriority, defaultSigner),
+	}
+}
+
+func getEndpointScheme(protocols []string, disableSSL bool) string {
+	if disableSSL {
+		return "http"
+	}
+
+	return getByPriority(protocols, protocolPriority, defaultProtocol)
+}
+
+func (e *endpoint) mergeIn(other endpoint) {
+	if len(other.Hostname) > 0 {
+		e.Hostname = other.Hostname
+	}
+	if len(other.Protocols) > 0 {
+		e.Protocols = other.Protocols
+	}
+	if len(other.SignatureVersions) > 0 {
+		e.SignatureVersions = other.SignatureVersions
+	}
+	if len(other.CredentialScope.Region) > 0 {
+		e.CredentialScope.Region = other.CredentialScope.Region
+	}
+	if len(other.CredentialScope.Service) > 0 {
+		e.CredentialScope.Service = other.CredentialScope.Service
+	}
+	if len(other.SSLCommonName) > 0 {
+		e.SSLCommonName = other.SSLCommonName
+	}
+	if other.HasDualStack != boxedBoolUnset {
+		e.HasDualStack = other.HasDualStack
+	}
+	if len(other.DualStackHostname) > 0 {
+		e.DualStackHostname = other.DualStackHostname
+	}
+}
+
+type credentialScope struct {
+	Region  string `json:"region"`
+	Service string `json:"service"`
+}
+
+type boxedBool int
+
+func (b *boxedBool) UnmarshalJSON(buf []byte) error {
+	v, err := strconv.ParseBool(string(buf))
+	if err != nil {
+		return err
+	}
+
+	if v {
+		*b = boxedTrue
+	} else {
+		*b = boxedFalse
+	}
+
+	return nil
+}
+
+const (
+	boxedBoolUnset boxedBool = iota
+	boxedFalse
+	boxedTrue
+)

vendor/github.com/aws/aws-sdk-go/aws/endpoints/v3model_codegen.go

@@ -0,0 +1,334 @@
+// +build codegen
+
+package endpoints
+
+import (
+	"fmt"
+	"io"
+	"reflect"
+	"strings"
+	"text/template"
+	"unicode"
+)
+
+// A CodeGenOptions are the options for code generating the endpoints into
+// Go code from the endpoints model definition.
+type CodeGenOptions struct {
+	// Options for how the model will be decoded.
+	DecodeModelOptions DecodeModelOptions
+}
+
+// Set combines all of the option functions together
+func (d *CodeGenOptions) Set(optFns ...func(*CodeGenOptions)) {
+	for _, fn := range optFns {
+		fn(d)
+	}
+}
+
+// CodeGenModel given a endpoints model file will decode it and attempt to
+// generate Go code from the model definition. Error will be returned if
+// the code is unable to be generated, or decoded.
+func CodeGenModel(modelFile io.Reader, outFile io.Writer, optFns ...func(*CodeGenOptions)) error {
+	var opts CodeGenOptions
+	opts.Set(optFns...)
+
+	resolver, err := DecodeModel(modelFile, func(d *DecodeModelOptions) {
+		*d = opts.DecodeModelOptions
+	})
+	if err != nil {
+		return err
+	}
+
+	tmpl := template.Must(template.New("tmpl").Funcs(funcMap).Parse(v3Tmpl))
+	if err := tmpl.ExecuteTemplate(outFile, "defaults", resolver); err != nil {
+		return fmt.Errorf("failed to execute template, %v", err)
+	}
+
+	return nil
+}
+
+func toSymbol(v string) string {
+	out := []rune{}
+	for _, c := range strings.Title(v) {
+		if !(unicode.IsNumber(c) || unicode.IsLetter(c)) {
+			continue
+		}
+
+		out = append(out, c)
+	}
+
+	return string(out)
+}
+
+func quoteString(v string) string {
+	return fmt.Sprintf("%q", v)
+}
+
+func regionConstName(p, r string) string {
+	return toSymbol(p) + toSymbol(r)
+}
+
+func partitionGetter(id string) string {
+	return fmt.Sprintf("%sPartition", toSymbol(id))
+}
+
+func partitionVarName(id string) string {
+	return fmt.Sprintf("%sPartition", strings.ToLower(toSymbol(id)))
+}
+
+func listPartitionNames(ps partitions) string {
+	names := []string{}
+	switch len(ps) {
+	case 1:
+		return ps[0].Name
+	case 2:
+		return fmt.Sprintf("%s and %s", ps[0].Name, ps[1].Name)
+	default:
+		for i, p := range ps {
+			if i == len(ps)-1 {
+				names = append(names, "and "+p.Name)
+			} else {
+				names = append(names, p.Name)
+			}
+		}
+		return strings.Join(names, ", ")
+	}
+}
+
+func boxedBoolIfSet(msg string, v boxedBool) string {
+	switch v {
+	case boxedTrue:
+		return fmt.Sprintf(msg, "boxedTrue")
+	case boxedFalse:
+		return fmt.Sprintf(msg, "boxedFalse")
+	default:
+		return ""
+	}
+}
+
+func stringIfSet(msg, v string) string {
+	if len(v) == 0 {
+		return ""
+	}
+
+	return fmt.Sprintf(msg, v)
+}
+
+func stringSliceIfSet(msg string, vs []string) string {
+	if len(vs) == 0 {
+		return ""
+	}
+
+	names := []string{}
+	for _, v := range vs {
+		names = append(names, `"`+v+`"`)
+	}
+
+	return fmt.Sprintf(msg, strings.Join(names, ","))
+}
+
+func endpointIsSet(v endpoint) bool {
+	return !reflect.DeepEqual(v, endpoint{})
+}
+
+func serviceSet(ps partitions) map[string]struct{} {
+	set := map[string]struct{}{}
+	for _, p := range ps {
+		for id := range p.Services {
+			set[id] = struct{}{}
+		}
+	}
+
+	return set
+}
+
+var funcMap = template.FuncMap{
+	"ToSymbol":           toSymbol,
+	"QuoteString":        quoteString,
+	"RegionConst":        regionConstName,
+	"PartitionGetter":    partitionGetter,
+	"PartitionVarName":   partitionVarName,
+	"ListPartitionNames": listPartitionNames,
+	"BoxedBoolIfSet":     boxedBoolIfSet,
+	"StringIfSet":        stringIfSet,
+	"StringSliceIfSet":   stringSliceIfSet,
+	"EndpointIsSet":      endpointIsSet,
+	"ServicesSet":        serviceSet,
+}
+
+const v3Tmpl = `
+{{ define "defaults" -}}
+// THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT.
+
+package endpoints
+
+import (
+	"regexp"
+)
+
+	{{ template "partition consts" . }}
+
+	{{ range $_, $partition := . }}
+		{{ template "partition region consts" $partition }}
+	{{ end }}
+
+	{{ template "service consts" . }}
+	
+	{{ template "endpoint resolvers" . }}
+{{- end }}
+
+{{ define "partition consts" }}
+	// Partition identifiers
+	const (
+		{{ range $_, $p := . -}}
+			{{ ToSymbol $p.ID }}PartitionID = {{ QuoteString $p.ID }} // {{ $p.Name }} partition.
+		{{ end -}}
+	)
+{{- end }}
+
+{{ define "partition region consts" }}
+	// {{ .Name }} partition's regions.
+	const (
+		{{ range $id, $region := .Regions -}}
+			{{ ToSymbol $id }}RegionID = {{ QuoteString $id }} // {{ $region.Description }}.
+		{{ end -}}
+	)
+{{- end }}
+
+{{ define "service consts" }}
+	// Service identifiers
+	const (
+		{{ $serviceSet := ServicesSet . -}}
+		{{ range $id, $_ := $serviceSet -}}
+			{{ ToSymbol $id }}ServiceID = {{ QuoteString $id }} // {{ ToSymbol $id }}.
+		{{ end -}}
+	)
+{{- end }}
+
+{{ define "endpoint resolvers" }}
+	// DefaultResolver returns an Endpoint resolver that will be able
+	// to resolve endpoints for: {{ ListPartitionNames . }}.
+	//
+	// Casting the return value of this func to a EnumPartitions will
+	// allow you to get a list of the partitions in the order the endpoints
+	// will be resolved in.
+	//
+	//    resolver := endpoints.DefaultResolver()
+	//    partitions := resolver.(endpoints.EnumPartitions).Partitions()
+	//    for _, p := range partitions {
+	//        // ... inspect partitions
+	//    }
+	func DefaultResolver() Resolver {
+		return defaultPartitions
+	}
+
+	var defaultPartitions = partitions{
+		{{ range $_, $partition := . -}}
+			{{ PartitionVarName $partition.ID }},
+		{{ end }}
+	}
+	
+	{{ range $_, $partition := . -}}
+		{{ $name := PartitionGetter $partition.ID -}}
+		// {{ $name }} returns the Resolver for {{ $partition.Name }}.
+		func {{ $name }}() Partition {
+			return  {{ PartitionVarName $partition.ID }}.Partition()
+		}
+		var {{ PartitionVarName $partition.ID }} = {{ template "gocode Partition" $partition }}
+	{{ end }}
+{{ end }}
+
+{{ define "default partitions" }}
+	func DefaultPartitions() []Partition {
+		return []partition{
+			{{ range $_, $partition := . -}}
+			// {{ ToSymbol $partition.ID}}Partition(),
+			{{ end }}
+		}
+	}
+{{ end }}
+
+{{ define "gocode Partition" -}}
+partition{
+	{{ StringIfSet "ID: %q,\n" .ID -}}
+	{{ StringIfSet "Name: %q,\n" .Name -}}
+	{{ StringIfSet "DNSSuffix: %q,\n" .DNSSuffix -}}
+	RegionRegex: {{ template "gocode RegionRegex" .RegionRegex }},
+	{{ if EndpointIsSet .Defaults -}}
+		Defaults: {{ template "gocode Endpoint" .Defaults }},
+	{{- end }}
+	Regions:  {{ template "gocode Regions" .Regions }},
+	Services: {{ template "gocode Services" .Services }},
+}
+{{- end }}
+
+{{ define "gocode RegionRegex" -}}
+regionRegex{
+	Regexp: func() *regexp.Regexp{
+		reg, _ := regexp.Compile({{ QuoteString .Regexp.String }})
+		return reg
+	}(),
+}
+{{- end }}
+
+{{ define "gocode Regions" -}}
+regions{
+	{{ range $id, $region := . -}}
+		"{{ $id }}": {{ template "gocode Region" $region }},
+	{{ end -}}
+}
+{{- end }}
+
+{{ define "gocode Region" -}}
+region{
+	{{ StringIfSet "Description: %q,\n" .Description -}}
+}
+{{- end }}
+
+{{ define "gocode Services" -}}
+services{
+	{{ range $id, $service := . -}}
+	"{{ $id }}": {{ template "gocode Service" $service }},
+	{{ end }}
+}
+{{- end }}
+
+{{ define "gocode Service" -}}
+service{
+	{{ StringIfSet "PartitionEndpoint: %q,\n" .PartitionEndpoint -}}
+	{{ BoxedBoolIfSet "IsRegionalized: %s,\n" .IsRegionalized -}}
+	{{ if EndpointIsSet .Defaults -}}
+		Defaults: {{ template "gocode Endpoint" .Defaults -}},
+	{{- end }}
+	{{ if .Endpoints -}}
+		Endpoints: {{ template "gocode Endpoints" .Endpoints }},
+	{{- end }}
+}
+{{- end }}
+
+{{ define "gocode Endpoints" -}}
+endpoints{
+	{{ range $id, $endpoint := . -}}
+	"{{ $id }}": {{ template "gocode Endpoint" $endpoint }},
+	{{ end }}
+}
+{{- end }}
+
+{{ define "gocode Endpoint" -}}
+endpoint{
+	{{ StringIfSet "Hostname: %q,\n" .Hostname -}}
+	{{ StringIfSet "SSLCommonName: %q,\n" .SSLCommonName -}}
+	{{ StringSliceIfSet "Protocols: []string{%s},\n" .Protocols -}}
+	{{ StringSliceIfSet "SignatureVersions: []string{%s},\n" .SignatureVersions -}}
+	{{ if or .CredentialScope.Region .CredentialScope.Service -}}
+	CredentialScope: credentialScope{
+		{{ StringIfSet "Region: %q,\n" .CredentialScope.Region -}}
+		{{ StringIfSet "Service: %q,\n" .CredentialScope.Service -}}
+	},
+	{{- end }}
+	{{ BoxedBoolIfSet "HasDualStack: %s,\n" .HasDualStack -}}
+	{{ StringIfSet "DualStackHostname: %q,\n" .DualStackHostname -}}
+
+}
+{{- end }}
+`

vendor/github.com/aws/aws-sdk-go/aws/request/http_request.go

@@ -1,5 +1,3 @@
-// +build go1.5
-
 package request
 
 import (
@@ -9,20 +7,13 @@ import (
 )
 
 func copyHTTPRequest(r *http.Request, body io.ReadCloser) *http.Request {
-	req := &http.Request{
+	req := new(http.Request)
-		URL:           &url.URL{},
+	*req = *r
-		Header:        http.Header{},
+	req.URL = &url.URL{}
-		Close:         r.Close,
-		Body:          body,
-		Host:          r.Host,
-		Method:        r.Method,
-		Proto:         r.Proto,
-		ContentLength: r.ContentLength,
-		// Cancel will be deprecated in 1.7 and will be replaced with Context
-		Cancel: r.Cancel,
-	}
-
 	*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)

vendor/github.com/aws/aws-sdk-go/aws/request/http_request_1_4.go

@@ -1,31 +0,0 @@
-// +build !go1.5
-
-package request
-
-import (
-	"io"
-	"net/http"
-	"net/url"
-)
-
-func copyHTTPRequest(r *http.Request, body io.ReadCloser) *http.Request {
-	req := &http.Request{
-		URL:           &url.URL{},
-		Header:        http.Header{},
-		Close:         r.Close,
-		Body:          body,
-		Host:          r.Host,
-		Method:        r.Method,
-		Proto:         r.Proto,
-		ContentLength: r.ContentLength,
-	}
-
-	*req.URL = *r.URL
-	for k, v := range r.Header {
-		for _, vv := range v {
-			req.Header.Add(k, vv)
-		}
-	}
-
-	return req
-}

vendor/github.com/aws/aws-sdk-go/aws/request/offset_reader.go

@@ -9,7 +9,7 @@ import (
 // with retrying requests
 type offsetReader struct {
 	buf    io.ReadSeeker
-	lock   sync.RWMutex
+	lock   sync.Mutex
 	closed bool
 }
 
@@ -21,7 +21,8 @@ func newOffsetReader(buf io.ReadSeeker, offset int64) *offsetReader {
 	return reader
 }
 
-// Close is a thread-safe close. Uses the write lock.
+// 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()
@@ -29,10 +30,10 @@ func (o *offsetReader) Close() error {
 	return nil
 }
 
-// Read is a thread-safe read using a read lock.
+// Read is a thread-safe read of the underlying io.ReadSeeker
 func (o *offsetReader) Read(p []byte) (int, error) {
-	o.lock.RLock()
+	o.lock.Lock()
-	defer o.lock.RUnlock()
+	defer o.lock.Unlock()
 
 	if o.closed {
 		return 0, io.EOF
@@ -41,6 +42,14 @@ func (o *offsetReader) Read(p []byte) (int, error) {
 	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 {

vendor/github.com/aws/aws-sdk-go/aws/request/request.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"io/ioutil"
+	"net"
 	"net/http"
 	"net/url"
 	"reflect"
@@ -42,6 +42,12 @@ type Request struct {
 	LastSignedAt     time.Time
 
 	built bool
+
+	// Need to persist an intermideant body betweend 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 rewraps the input Body for each HTTP request.
+	safeBody *offsetReader
 }
 
 // An Operation is the service API operation to be made.
@@ -50,6 +56,8 @@ type Operation struct {
 	HTTPMethod string
 	HTTPPath   string
 	*Paginator
+
+	BeforePresignFn func(r *Request) error
 }
 
 // Paginator keeps track of pagination configuration for an API operation.
@@ -73,15 +81,11 @@ func New(cfg aws.Config, clientInfo metadata.ClientInfo, handlers Handlers,
 	if method == "" {
 		method = "POST"
 	}
-	p := operation.HTTPPath
-	if p == "" {
-		p = "/"
-	}
 
 	httpReq, _ := http.NewRequest(method, "", nil)
 
 	var err error
-	httpReq.URL, err = url.Parse(clientInfo.Endpoint + p)
+	httpReq.URL, err = url.Parse(clientInfo.Endpoint + operation.HTTPPath)
 	if err != nil {
 		httpReq.URL = &url.URL{}
 		err = awserr.New("InvalidEndpointURL", "invalid endpoint uri", err)
@@ -139,8 +143,8 @@ func (r *Request) SetStringBody(s string) {
 
 // SetReaderBody will set the request's body reader.
 func (r *Request) SetReaderBody(reader io.ReadSeeker) {
-	r.HTTPRequest.Body = newOffsetReader(reader, 0)
 	r.Body = reader
+	r.ResetBody()
 }
 
 // Presign returns the request's signed URL. Error will be returned
@@ -148,6 +152,15 @@ func (r *Request) SetReaderBody(reader io.ReadSeeker) {
 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
@@ -224,6 +237,99 @@ func (r *Request) Sign() error {
 	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("SerializationError", "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
@@ -235,6 +341,8 @@ func (r *Request) Sign() error {
 //
 // 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 {
 	for {
 		if aws.BoolValue(r.Retryable) {
@@ -243,21 +351,15 @@ func (r *Request) Send() error {
 					r.ClientInfo.ServiceName, r.Operation.Name, r.RetryCount))
 			}
 
-			var body io.ReadCloser
+			// The previous http.Request will have a reference to the r.Body
-			if reader, ok := r.HTTPRequest.Body.(*offsetReader); ok {
+			// and the HTTP Client's Transport may still be reading from
-				body = reader.CloseAndCopy(r.BodyStart)
+			// the request's body even though the Client's Do returned.
-			} else {
+			r.HTTPRequest = copyHTTPRequest(r.HTTPRequest, nil)
-				if r.Config.Logger != nil {
+			r.ResetBody()
-					r.Config.Logger.Log("Request body type has been overwritten. May cause race conditions")
-				}
-				r.Body.Seek(r.BodyStart, 0)
-				body = ioutil.NopCloser(r.Body)
-			}
 
-			r.HTTPRequest = copyHTTPRequest(r.HTTPRequest, body)
+			// Closing response body to ensure that no response body is leaked
+			// between retry attempts.
 			if r.HTTPResponse != nil && r.HTTPResponse.Body != nil {
-				// Closing response body. Since we are setting a new request to send off, this
-				// response will get squashed and leaked.
 				r.HTTPResponse.Body.Close()
 			}
 		}
@@ -271,7 +373,7 @@ func (r *Request) Send() error {
 
 		r.Handlers.Send.Run(r)
 		if r.Error != nil {
-			if strings.Contains(r.Error.Error(), "net/http: request canceled") {
+			if !shouldRetryCancel(r) {
 				return r.Error
 			}
 
@@ -285,7 +387,6 @@ func (r *Request) Send() error {
 			debugLogReqError(r, "Send Request", true, err)
 			continue
 		}
-
 		r.Handlers.UnmarshalMeta.Run(r)
 		r.Handlers.ValidateResponse.Run(r)
 		if r.Error != nil {
@@ -320,6 +421,17 @@ func (r *Request) Send() error {
 	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")
@@ -328,3 +440,26 @@ func AddToUserAgent(r *Request, s string) {
 	}
 	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 {
+		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")
+
+}

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{}

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

vendor/github.com/aws/aws-sdk-go/aws/request/retryer.go

@@ -38,6 +38,7 @@ var throttleCodes = map[string]struct{}{
 	"RequestThrottled":                       {},
 	"LimitExceededException":                 {}, // Deleting 10+ DynamoDb tables at once
 	"TooManyRequestsException":               {}, // Lambda functions
+	"PriorRequestNotComplete":                {}, // Route53
 }
 
 // credsExpiredCodes is a collection of error codes which signify the credentials

vendor/github.com/aws/aws-sdk-go/aws/session/doc.go

@@ -0,0 +1,223 @@
+/*
+Package session provides configuration for the SDK's service clients.
+
+Sessions can be shared across all service clients that share the same base
+configuration.  The Session is built from the SDK's default configuration and
+request handlers.
+
+Sessions should be cached when possible, because creating a new Session will
+load all configuration values from the environment, and config files each time
+the Session is created. Sharing the Session value across all of your service
+clients will ensure the configuration is loaded the fewest number of times possible.
+
+Concurrency
+
+Sessions are safe to use concurrently as long as the Session is not being
+modified. The SDK will not modify the Session once the Session has been created.
+Creating service clients concurrently from a shared Session is safe.
+
+Sessions from Shared Config
+
+Sessions can be created using the method above that will only load the
+additional config if the AWS_SDK_LOAD_CONFIG environment variable is set.
+Alternatively you can explicitly create a Session with shared config enabled.
+To do this you can use NewSessionWithOptions to configure how the Session will
+be created. Using the NewSessionWithOptions with SharedConfigState set to
+SharedConfigEnabled will create the session as if the AWS_SDK_LOAD_CONFIG
+environment variable was set.
+
+Creating Sessions
+
+When creating Sessions optional aws.Config values can be passed in that will
+override the default, or loaded config values the Session is being created
+with. This allows you to provide additional, or case based, configuration
+as needed.
+
+By default NewSession will only load credentials from the shared credentials
+file (~/.aws/credentials). If the AWS_SDK_LOAD_CONFIG environment variable is
+set to a truthy value the Session will be created from the configuration
+values from the shared config (~/.aws/config) and shared credentials
+(~/.aws/credentials) files. See the section Sessions from Shared Config for
+more information.
+
+Create a Session with the default config and request handlers. With credentials
+region, and profile loaded from the environment and shared config automatically.
+Requires the AWS_PROFILE to be set, or "default" is used.
+
+	// Create Session
+	sess, err := session.NewSession()
+
+	// Create a Session with a custom region
+	sess, err := session.NewSession(&aws.Config{Region: aws.String("us-east-1")})
+
+	// Create a S3 client instance from a session
+	sess, err := session.NewSession()
+	if err != nil {
+		// Handle Session creation error
+	}
+	svc := s3.New(sess)
+
+Create Session With Option Overrides
+
+In addition to NewSession, Sessions can be created using NewSessionWithOptions.
+This func allows you to control and override how the Session will be created
+through code instead of being driven by environment variables only.
+
+Use NewSessionWithOptions when you want to provide the config profile, or
+override the shared config state (AWS_SDK_LOAD_CONFIG).
+
+	// Equivalent to session.NewSession()
+	sess, err := session.NewSessionWithOptions(session.Options{})
+
+	// Specify profile to load for the session's config
+	sess, err := session.NewSessionWithOptions(session.Options{
+		 Profile: "profile_name",
+	})
+
+	// Specify profile for config and region for requests
+	sess, err := session.NewSessionWithOptions(session.Options{
+		 Config: aws.Config{Region: aws.String("us-east-1")},
+		 Profile: "profile_name",
+	})
+
+	// Force enable Shared Config support
+	sess, err := session.NewSessionWithOptions(session.Options{
+		SharedConfigState: SharedConfigEnable,
+	})
+
+Adding Handlers
+
+You can add handlers to a session for processing HTTP requests. All service
+clients that use the session inherit the handlers. For example, the following
+handler logs every request and its payload made by a service client:
+
+	// Create a session, and add additional handlers for all service
+	// clients created with the Session to inherit. Adds logging handler.
+	sess, err := session.NewSession()
+	sess.Handlers.Send.PushFront(func(r *request.Request) {
+		// Log every request made and its payload
+		logger.Println("Request: %s/%s, Payload: %s",
+			r.ClientInfo.ServiceName, r.Operation, r.Params)
+	})
+
+Deprecated "New" function
+
+The New session function has been deprecated because it does not provide good
+way to return errors that occur when loading the configuration files and values.
+Because of this, NewSession was created so errors can be retrieved when
+creating a session fails.
+
+Shared Config Fields
+
+By default the SDK will only load the shared credentials file's (~/.aws/credentials)
+credentials values, and all other config is provided by the environment variables,
+SDK defaults, and user provided aws.Config values.
+
+If the AWS_SDK_LOAD_CONFIG environment variable is set, or SharedConfigEnable
+option is used to create the Session the full shared config values will be
+loaded. This includes credentials, region, and support for assume role. In
+addition the Session will load its configuration from both the shared config
+file (~/.aws/config) and shared credentials file (~/.aws/credentials). Both
+files have the same format.
+
+If both config files are present the configuration from both files will be
+read. The Session will be created from  configuration values from the shared
+credentials file (~/.aws/credentials) over those in the shared credentials
+file (~/.aws/config).
+
+Credentials are the values the SDK should use for authenticating requests with
+AWS Services. They arfrom a configuration file will need to include both
+aws_access_key_id and aws_secret_access_key must be provided together in the
+same file to be considered valid. The values will be ignored if not a complete
+group. aws_session_token is an optional field that can be provided if both of
+the other two fields are also provided.
+
+	aws_access_key_id = AKID
+	aws_secret_access_key = SECRET
+	aws_session_token = TOKEN
+
+Assume Role values allow you to configure the SDK to assume an IAM role using
+a set of credentials provided in a config file via the source_profile field.
+Both "role_arn" and "source_profile" are required. The SDK does not support
+assuming a role with MFA token Via the Session's constructor. You can use the
+stscreds.AssumeRoleProvider credentials provider to specify custom
+configuration and support for MFA.
+
+	role_arn = arn:aws:iam::<account_number>:role/<role_name>
+	source_profile = profile_with_creds
+	external_id = 1234
+	mfa_serial = not supported!
+	role_session_name = session_name
+
+Region is the region the SDK should use for looking up AWS service endpoints
+and signing requests.
+
+	region = us-east-1
+
+Environment Variables
+
+When a Session is created several environment variables can be set to adjust
+how the SDK functions, and what configuration data it loads when creating
+Sessions. All environment values are optional, but some values like credentials
+require multiple of the values to set or the partial values will be ignored.
+All environment variable values are strings unless otherwise noted.
+
+Environment configuration values. If set both Access Key ID and Secret Access
+Key must be provided. Session Token and optionally also be provided, but is
+not required.
+
+	# Access Key ID
+	AWS_ACCESS_KEY_ID=AKID
+	AWS_ACCESS_KEY=AKID # only read if AWS_ACCESS_KEY_ID is not set.
+
+	# Secret Access Key
+	AWS_SECRET_ACCESS_KEY=SECRET
+	AWS_SECRET_KEY=SECRET=SECRET # only read if AWS_SECRET_ACCESS_KEY is not set.
+
+	# Session Token
+	AWS_SESSION_TOKEN=TOKEN
+
+Region value will instruct the SDK where to make service API requests to. If is
+not provided in the environment the region must be provided before a service
+client request is made.
+
+	AWS_REGION=us-east-1
+
+	# AWS_DEFAULT_REGION is only read if AWS_SDK_LOAD_CONFIG is also set,
+	# and AWS_REGION is not also set.
+	AWS_DEFAULT_REGION=us-east-1
+
+Profile name the SDK should load use when loading shared config from the
+configuration files. If not provided "default" will be used as the profile name.
+
+	AWS_PROFILE=my_profile
+
+	# AWS_DEFAULT_PROFILE is only read if AWS_SDK_LOAD_CONFIG is also set,
+	# and AWS_PROFILE is not also set.
+	AWS_DEFAULT_PROFILE=my_profile
+
+SDK load config instructs the SDK to load the shared config in addition to
+shared credentials. This also expands the configuration loaded so the shared
+credentials will have parity with the shared config file. This also enables
+Region and Profile support for the AWS_DEFAULT_REGION and AWS_DEFAULT_PROFILE
+env values as well.
+
+	AWS_SDK_LOAD_CONFIG=1
+
+Shared credentials file path can be set to instruct the SDK to use an alternative
+file for the shared credentials. If not set the file will be loaded from
+$HOME/.aws/credentials on Linux/Unix based systems, and
+%USERPROFILE%\.aws\credentials on Windows.
+
+	AWS_SHARED_CREDENTIALS_FILE=$HOME/my_shared_credentials
+
+Shared config file path can be set to instruct the SDK to use an alternative
+file for the shared config. If not set the file will be loaded from
+$HOME/.aws/config on Linux/Unix based systems, and
+%USERPROFILE%\.aws\config on Windows.
+
+	AWS_CONFIG_FILE=$HOME/my_shared_config
+
+
+*/
+package session

vendor/github.com/aws/aws-sdk-go/aws/session/env_config.go

@@ -0,0 +1,188 @@
+package session
+
+import (
+	"os"
+	"path/filepath"
+	"strconv"
+
+	"github.com/aws/aws-sdk-go/aws/credentials"
+)
+
+// envConfig is a collection of environment values the SDK will read
+// setup config from. All environment values are optional. But some values
+// such as credentials require multiple values to be complete or the values
+// will be ignored.
+type envConfig struct {
+	// Environment configuration values. If set both Access Key ID and Secret Access
+	// Key must be provided. Session Token and optionally also be provided, but is
+	// not required.
+	//
+	//	# Access Key ID
+	//	AWS_ACCESS_KEY_ID=AKID
+	//	AWS_ACCESS_KEY=AKID # only read if AWS_ACCESS_KEY_ID is not set.
+	//
+	//	# Secret Access Key
+	//	AWS_SECRET_ACCESS_KEY=SECRET
+	//	AWS_SECRET_KEY=SECRET=SECRET # only read if AWS_SECRET_ACCESS_KEY is not set.
+	//
+	//	# Session Token
+	//	AWS_SESSION_TOKEN=TOKEN
+	Creds credentials.Value
+
+	// Region value will instruct the SDK where to make service API requests to. If is
+	// not provided in the environment the region must be provided before a service
+	// client request is made.
+	//
+	//	AWS_REGION=us-east-1
+	//
+	//	# AWS_DEFAULT_REGION is only read if AWS_SDK_LOAD_CONFIG is also set,
+	//	# and AWS_REGION is not also set.
+	//	AWS_DEFAULT_REGION=us-east-1
+	Region string
+
+	// Profile name the SDK should load use when loading shared configuration from the
+	// shared configuration files. If not provided "default" will be used as the
+	// profile name.
+	//
+	//	AWS_PROFILE=my_profile
+	//
+	//	# AWS_DEFAULT_PROFILE is only read if AWS_SDK_LOAD_CONFIG is also set,
+	//	# and AWS_PROFILE is not also set.
+	//	AWS_DEFAULT_PROFILE=my_profile
+	Profile string
+
+	// SDK load config instructs the SDK to load the shared config in addition to
+	// shared credentials. This also expands the configuration loaded from the shared
+	// credentials to have parity with the shared config file. This also enables
+	// Region and Profile support for the AWS_DEFAULT_REGION and AWS_DEFAULT_PROFILE
+	// env values as well.
+	//
+	//	AWS_SDK_LOAD_CONFIG=1
+	EnableSharedConfig bool
+
+	// Shared credentials file path can be set to instruct the SDK to use an alternate
+	// file for the shared credentials. If not set the file will be loaded from
+	// $HOME/.aws/credentials on Linux/Unix based systems, and
+	// %USERPROFILE%\.aws\credentials on Windows.
+	//
+	//	AWS_SHARED_CREDENTIALS_FILE=$HOME/my_shared_credentials
+	SharedCredentialsFile string
+
+	// Shared config file path can be set to instruct the SDK to use an alternate
+	// file for the shared config. If not set the file will be loaded from
+	// $HOME/.aws/config on Linux/Unix based systems, and
+	// %USERPROFILE%\.aws\config on Windows.
+	//
+	//	AWS_CONFIG_FILE=$HOME/my_shared_config
+	SharedConfigFile string
+}
+
+var (
+	credAccessEnvKey = []string{
+		"AWS_ACCESS_KEY_ID",
+		"AWS_ACCESS_KEY",
+	}
+	credSecretEnvKey = []string{
+		"AWS_SECRET_ACCESS_KEY",
+		"AWS_SECRET_KEY",
+	}
+	credSessionEnvKey = []string{
+		"AWS_SESSION_TOKEN",
+	}
+
+	regionEnvKeys = []string{
+		"AWS_REGION",
+		"AWS_DEFAULT_REGION", // Only read if AWS_SDK_LOAD_CONFIG is also set
+	}
+	profileEnvKeys = []string{
+		"AWS_PROFILE",
+		"AWS_DEFAULT_PROFILE", // Only read if AWS_SDK_LOAD_CONFIG is also set
+	}
+)
+
+// loadEnvConfig retrieves the SDK's environment configuration.
+// See `envConfig` for the values that will be retrieved.
+//
+// If the environment variable `AWS_SDK_LOAD_CONFIG` is set to a truthy value
+// the shared SDK config will be loaded in addition to the SDK's specific
+// configuration values.
+func loadEnvConfig() envConfig {
+	enableSharedConfig, _ := strconv.ParseBool(os.Getenv("AWS_SDK_LOAD_CONFIG"))
+	return envConfigLoad(enableSharedConfig)
+}
+
+// loadEnvSharedConfig retrieves the SDK's environment configuration, and the
+// SDK shared config. See `envConfig` for the values that will be retrieved.
+//
+// Loads the shared configuration in addition to the SDK's specific configuration.
+// This will load the same values as `loadEnvConfig` if the `AWS_SDK_LOAD_CONFIG`
+// environment variable is set.
+func loadSharedEnvConfig() envConfig {
+	return envConfigLoad(true)
+}
+
+func envConfigLoad(enableSharedConfig bool) envConfig {
+	cfg := envConfig{}
+
+	cfg.EnableSharedConfig = enableSharedConfig
+
+	setFromEnvVal(&cfg.Creds.AccessKeyID, credAccessEnvKey)
+	setFromEnvVal(&cfg.Creds.SecretAccessKey, credSecretEnvKey)
+	setFromEnvVal(&cfg.Creds.SessionToken, credSessionEnvKey)
+
+	// Require logical grouping of credentials
+	if len(cfg.Creds.AccessKeyID) == 0 || len(cfg.Creds.SecretAccessKey) == 0 {
+		cfg.Creds = credentials.Value{}
+	} else {
+		cfg.Creds.ProviderName = "EnvConfigCredentials"
+	}
+
+	regionKeys := regionEnvKeys
+	profileKeys := profileEnvKeys
+	if !cfg.EnableSharedConfig {
+		regionKeys = regionKeys[:1]
+		profileKeys = profileKeys[:1]
+	}
+
+	setFromEnvVal(&cfg.Region, regionKeys)
+	setFromEnvVal(&cfg.Profile, profileKeys)
+
+	cfg.SharedCredentialsFile = sharedCredentialsFilename()
+	cfg.SharedConfigFile = sharedConfigFilename()
+
+	return cfg
+}
+
+func setFromEnvVal(dst *string, keys []string) {
+	for _, k := range keys {
+		if v := os.Getenv(k); len(v) > 0 {
+			*dst = v
+			break
+		}
+	}
+}
+
+func sharedCredentialsFilename() string {
+	if name := os.Getenv("AWS_SHARED_CREDENTIALS_FILE"); len(name) > 0 {
+		return name
+	}
+
+	return filepath.Join(userHomeDir(), ".aws", "credentials")
+}
+
+func sharedConfigFilename() string {
+	if name := os.Getenv("AWS_CONFIG_FILE"); len(name) > 0 {
+		return name
+	}
+
+	return filepath.Join(userHomeDir(), ".aws", "config")
+}
+
+func userHomeDir() string {
+	homeDir := os.Getenv("HOME") // *nix
+	if len(homeDir) == 0 {       // windows
+		homeDir = os.Getenv("USERPROFILE")
+	}
+
+	return homeDir
+}

vendor/github.com/aws/aws-sdk-go/aws/session/session.go

@@ -1,62 +1,232 @@
-// Package session provides a way to create service clients with shared configuration
-// and handlers.
-//
-// Generally this package should be used instead of the `defaults` package.
-//
-// A session should be used to share configurations and request handlers between multiple
-// service clients. When service clients need specific configuration aws.Config can be
-// used to provide additional configuration directly to the service client.
 package session
 
 import (
+	"fmt"
+
 	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/awserr"
 	"github.com/aws/aws-sdk-go/aws/client"
 	"github.com/aws/aws-sdk-go/aws/corehandlers"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/credentials/stscreds"
 	"github.com/aws/aws-sdk-go/aws/defaults"
+	"github.com/aws/aws-sdk-go/aws/endpoints"
 	"github.com/aws/aws-sdk-go/aws/request"
-	"github.com/aws/aws-sdk-go/private/endpoints"
 )
 
 // A Session provides a central location to create service clients from and
 // store configurations and request handlers for those services.
 //
 // Sessions are safe to create service clients concurrently, but it is not safe
-// to mutate the session concurrently.
+// to mutate the Session concurrently.
+//
+// The Session satisfies the service client's client.ClientConfigProvider.
 type Session struct {
 	Config   *aws.Config
 	Handlers request.Handlers
 }
 
-// New creates a new instance of the handlers merging in the provided Configs
+// New creates a new instance of the handlers merging in the provided configs
-// on top of the SDK's default configurations. Once the session is created it
+// on top of the SDK's default configurations. Once the Session is created it
-// can be mutated to modify Configs or Handlers. The session is safe to be read
+// can be mutated to modify the Config or Handlers. The Session is safe to be
-// concurrently, but it should not be written to concurrently.
+// read concurrently, but it should not be written to concurrently.
 //
-// Example:
+// If the AWS_SDK_LOAD_CONFIG environment is set to a truthy value, the New
-//     // Create a session with the default config and request handlers.
+// method could now encounter an error when loading the configuration. When
-//     sess := session.New()
+// The environment variable is set, and an error occurs, New will return a
+// session that will fail all requests reporting the error that occurred while
+// loading the session. Use NewSession to get the error when creating the
+// session.
 //
-//     // Create a session with a custom region
+// If the AWS_SDK_LOAD_CONFIG environment variable is set to a truthy value
-//     sess := session.New(&aws.Config{Region: aws.String("us-east-1")})
+// the shared config file (~/.aws/config) will also be loaded, in addition to
+// the shared credentials file (~/.aws/config). Values set in both the
+// shared config, and shared credentials will be taken from the shared
+// credentials file.
 //
-//     // Create a session, and add additional handlers for all service
+// Deprecated: Use NewSession functions to create sessions instead. NewSession
-//     // clients created with the session to inherit. Adds logging handler.
+// has the same functionality as New except an error can be returned when the
-//     sess := session.New()
+// func is called instead of waiting to receive an error until a request is made.
-//     sess.Handlers.Send.PushFront(func(r *request.Request) {
+func New(cfgs ...*aws.Config) *Session {
-//          // Log every request made and its payload
+	// load initial config from environment
-//          logger.Println("Request: %s/%s, Payload: %s", r.ClientInfo.ServiceName, r.Operation, r.Params)
+	envCfg := loadEnvConfig()
+
+	if envCfg.EnableSharedConfig {
+		s, err := newSession(envCfg, cfgs...)
+		if err != nil {
+			// Old session.New expected all errors to be discovered when
+			// a request is made, and would report the errors then. This
+			// needs to be replicated if an error occurs while creating
+			// the session.
+			msg := "failed to create session with AWS_SDK_LOAD_CONFIG enabled. " +
+				"Use session.NewSession to handle errors occurring during session creation."
+
+			// Session creation failed, need to report the error and prevent
+			// any requests from succeeding.
+			s = &Session{Config: defaults.Config()}
+			s.Config.MergeIn(cfgs...)
+			s.Config.Logger.Log("ERROR:", msg, "Error:", err)
+			s.Handlers.Validate.PushBack(func(r *request.Request) {
+				r.Error = err
+			})
+		}
+		return s
+	}
+
+	return oldNewSession(cfgs...)
+}
+
+// NewSession returns a new Session created from SDK defaults, config files,
+// environment, and user provided config files. Once the Session is created
+// it can be mutated to modify the Config or Handlers. The Session is safe to
+// be read concurrently, but it should not be written to concurrently.
+//
+// If the AWS_SDK_LOAD_CONFIG environment variable is set to a truthy value
+// the shared config file (~/.aws/config) will also be loaded in addition to
+// the shared credentials file (~/.aws/config). Values set in both the
+// shared config, and shared credentials will be taken from the shared
+// credentials file. Enabling the Shared Config will also allow the Session
+// to be built with retrieving credentials with AssumeRole set in the config.
+//
+// See the NewSessionWithOptions func for information on how to override or
+// control through code how the Session will be created. Such as specifying the
+// config profile, and controlling if shared config is enabled or not.
+func NewSession(cfgs ...*aws.Config) (*Session, error) {
+	envCfg := loadEnvConfig()
+
+	return newSession(envCfg, cfgs...)
+}
+
+// SharedConfigState provides the ability to optionally override the state
+// of the session's creation based on the shared config being enabled or
+// disabled.
+type SharedConfigState int
+
+const (
+	// SharedConfigStateFromEnv does not override any state of the
+	// AWS_SDK_LOAD_CONFIG env var. It is the default value of the
+	// SharedConfigState type.
+	SharedConfigStateFromEnv SharedConfigState = iota
+
+	// SharedConfigDisable overrides the AWS_SDK_LOAD_CONFIG env var value
+	// and disables the shared config functionality.
+	SharedConfigDisable
+
+	// SharedConfigEnable overrides the AWS_SDK_LOAD_CONFIG env var value
+	// and enables the shared config functionality.
+	SharedConfigEnable
+)
+
+// Options provides the means to control how a Session is created and what
+// configuration values will be loaded.
+//
+type Options struct {
+	// Provides config values for the SDK to use when creating service clients
+	// and making API requests to services. Any value set in with this field
+	// will override the associated value provided by the SDK defaults,
+	// environment or config files where relevant.
+	//
+	// If not set, configuration values from from SDK defaults, environment,
+	// config will be used.
+	Config aws.Config
+
+	// Overrides the config profile the Session should be created from. If not
+	// set the value of the environment variable will be loaded (AWS_PROFILE,
+	// or AWS_DEFAULT_PROFILE if the Shared Config is enabled).
+	//
+	// If not set and environment variables are not set the "default"
+	// (DefaultSharedConfigProfile) will be used as the profile to load the
+	// session config from.
+	Profile string
+
+	// Instructs how the Session will be created based on the AWS_SDK_LOAD_CONFIG
+	// environment variable. By default a Session will be created using the
+	// value provided by the AWS_SDK_LOAD_CONFIG environment variable.
+	//
+	// Setting this value to SharedConfigEnable or SharedConfigDisable
+	// will allow you to override the AWS_SDK_LOAD_CONFIG environment variable
+	// and enable or disable the shared config functionality.
+	SharedConfigState SharedConfigState
+}
+
+// NewSessionWithOptions returns a new Session created from SDK defaults, config files,
+// environment, and user provided config files. This func uses the Options
+// values to configure how the Session is created.
+//
+// If the AWS_SDK_LOAD_CONFIG environment variable is set to a truthy value
+// the shared config file (~/.aws/config) will also be loaded in addition to
+// the shared credentials file (~/.aws/config). Values set in both the
+// shared config, and shared credentials will be taken from the shared
+// credentials file. Enabling the Shared Config will also allow the Session
+// to be built with retrieving credentials with AssumeRole set in the config.
+//
+//     // Equivalent to session.New
+//     sess, err := session.NewSessionWithOptions(session.Options{})
+//
+//     // Specify profile to load for the session's config
+//     sess, err := session.NewSessionWithOptions(session.Options{
+//          Profile: "profile_name",
 //     })
 //
-//     // Create a S3 client instance from a session
+//     // Specify profile for config and region for requests
-//     sess := session.New()
+//     sess, err := session.NewSessionWithOptions(session.Options{
-//     svc := s3.New(sess)
+//          Config: aws.Config{Region: aws.String("us-east-1")},
-func New(cfgs ...*aws.Config) *Session {
+//          Profile: "profile_name",
+//     })
+//
+//     // Force enable Shared Config support
+//     sess, err := session.NewSessionWithOptions(session.Options{
+//         SharedConfigState: SharedConfigEnable,
+//     })
+func NewSessionWithOptions(opts Options) (*Session, error) {
+	var envCfg envConfig
+	if opts.SharedConfigState == SharedConfigEnable {
+		envCfg = loadSharedEnvConfig()
+	} else {
+		envCfg = loadEnvConfig()
+	}
+
+	if len(opts.Profile) > 0 {
+		envCfg.Profile = opts.Profile
+	}
+
+	switch opts.SharedConfigState {
+	case SharedConfigDisable:
+		envCfg.EnableSharedConfig = false
+	case SharedConfigEnable:
+		envCfg.EnableSharedConfig = true
+	}
+
+	return newSession(envCfg, &opts.Config)
+}
+
+// Must is a helper function to ensure the Session is valid and there was no
+// error when calling a NewSession function.
+//
+// This helper is intended to be used in variable initialization to load the
+// Session and configuration at startup. Such as:
+//
+//     var sess = session.Must(session.NewSession())
+func Must(sess *Session, err error) *Session {
+	if err != nil {
+		panic(err)
+	}
+
+	return sess
+}
+
+func oldNewSession(cfgs ...*aws.Config) *Session {
 	cfg := defaults.Config()
 	handlers := defaults.Handlers()
 
 	// Apply the passed in configs so the configuration can be applied to the
 	// default credential chain
 	cfg.MergeIn(cfgs...)
+	if cfg.EndpointResolver == nil {
+		// An endpoint resolver is required for a session to be able to provide
+		// endpoints for service client configurations.
+		cfg.EndpointResolver = endpoints.DefaultResolver()
+	}
 	cfg.Credentials = defaults.CredChain(cfg, handlers)
 
 	// Reapply any passed in configs to override credentials if set
@@ -72,6 +242,115 @@ func New(cfgs ...*aws.Config) *Session {
 	return s
 }
 
+func newSession(envCfg envConfig, cfgs ...*aws.Config) (*Session, error) {
+	cfg := defaults.Config()
+	handlers := defaults.Handlers()
+
+	// Get a merged version of the user provided config to determine if
+	// credentials were.
+	userCfg := &aws.Config{}
+	userCfg.MergeIn(cfgs...)
+
+	// Order config files will be loaded in with later files overwriting
+	// previous config file values.
+	cfgFiles := []string{envCfg.SharedConfigFile, envCfg.SharedCredentialsFile}
+	if !envCfg.EnableSharedConfig {
+		// The shared config file (~/.aws/config) is only loaded if instructed
+		// to load via the envConfig.EnableSharedConfig (AWS_SDK_LOAD_CONFIG).
+		cfgFiles = cfgFiles[1:]
+	}
+
+	// Load additional config from file(s)
+	sharedCfg, err := loadSharedConfig(envCfg.Profile, cfgFiles)
+	if err != nil {
+		return nil, err
+	}
+
+	mergeConfigSrcs(cfg, userCfg, envCfg, sharedCfg, handlers)
+
+	s := &Session{
+		Config:   cfg,
+		Handlers: handlers,
+	}
+
+	initHandlers(s)
+
+	return s, nil
+}
+
+func mergeConfigSrcs(cfg, userCfg *aws.Config, envCfg envConfig, sharedCfg sharedConfig, handlers request.Handlers) {
+	// Merge in user provided configuration
+	cfg.MergeIn(userCfg)
+
+	// Region if not already set by user
+	if len(aws.StringValue(cfg.Region)) == 0 {
+		if len(envCfg.Region) > 0 {
+			cfg.WithRegion(envCfg.Region)
+		} else if envCfg.EnableSharedConfig && len(sharedCfg.Region) > 0 {
+			cfg.WithRegion(sharedCfg.Region)
+		}
+	}
+
+	// Configure credentials if not already set
+	if cfg.Credentials == credentials.AnonymousCredentials && userCfg.Credentials == nil {
+		if len(envCfg.Creds.AccessKeyID) > 0 {
+			cfg.Credentials = credentials.NewStaticCredentialsFromCreds(
+				envCfg.Creds,
+			)
+		} else if envCfg.EnableSharedConfig && len(sharedCfg.AssumeRole.RoleARN) > 0 && sharedCfg.AssumeRoleSource != nil {
+			cfgCp := *cfg
+			cfgCp.Credentials = credentials.NewStaticCredentialsFromCreds(
+				sharedCfg.AssumeRoleSource.Creds,
+			)
+			cfg.Credentials = stscreds.NewCredentials(
+				&Session{
+					Config:   &cfgCp,
+					Handlers: handlers.Copy(),
+				},
+				sharedCfg.AssumeRole.RoleARN,
+				func(opt *stscreds.AssumeRoleProvider) {
+					opt.RoleSessionName = sharedCfg.AssumeRole.RoleSessionName
+
+					if len(sharedCfg.AssumeRole.ExternalID) > 0 {
+						opt.ExternalID = aws.String(sharedCfg.AssumeRole.ExternalID)
+					}
+
+					// MFA not supported
+				},
+			)
+		} else if len(sharedCfg.Creds.AccessKeyID) > 0 {
+			cfg.Credentials = credentials.NewStaticCredentialsFromCreds(
+				sharedCfg.Creds,
+			)
+		} else {
+			// Fallback to default credentials provider, include mock errors
+			// for the credential chain so user can identify why credentials
+			// failed to be retrieved.
+			cfg.Credentials = credentials.NewCredentials(&credentials.ChainProvider{
+				VerboseErrors: aws.BoolValue(cfg.CredentialsChainVerboseErrors),
+				Providers: []credentials.Provider{
+					&credProviderError{Err: awserr.New("EnvAccessKeyNotFound", "failed to find credentials in the environment.", nil)},
+					&credProviderError{Err: awserr.New("SharedCredsLoad", fmt.Sprintf("failed to load profile, %s.", envCfg.Profile), nil)},
+					defaults.RemoteCredProvider(*cfg, handlers),
+				},
+			})
+		}
+	}
+}
+
+type credProviderError struct {
+	Err error
+}
+
+var emptyCreds = credentials.Value{}
+
+func (c credProviderError) Retrieve() (credentials.Value, error) {
+	return credentials.Value{}, c.Err
+}
+func (c credProviderError) IsExpired() bool {
+	return true
+}
+
 func initHandlers(s *Session) {
 	// Add the Validate parameter handler if it is not disabled.
 	s.Handlers.Validate.Remove(corehandlers.ValidateParametersHandler)
@@ -80,12 +359,11 @@ func initHandlers(s *Session) {
 	}
 }
 
-// Copy creates and returns a copy of the current session, coping the config
+// Copy creates and returns a copy of the current Session, coping the config
 // and handlers. If any additional configs are provided they will be merged
-// on top of the session's copied config.
+// on top of the Session's copied config.
 //
-// Example:
+//     // Create a copy of the current Session, configured for the us-west-2 region.
-//     // Create a copy of the current session, configured for the us-west-2 region.
 //     sess.Copy(&aws.Config{Region: aws.String("us-west-2")})
 func (s *Session) Copy(cfgs ...*aws.Config) *Session {
 	newSession := &Session{
@@ -101,20 +379,40 @@ func (s *Session) Copy(cfgs ...*aws.Config) *Session {
 // ClientConfig satisfies the client.ConfigProvider interface and is used to
 // configure the service client instances. Passing the Session to the service
 // client's constructor (New) will use this method to configure the client.
-//
-// Example:
-//     sess := session.New()
-//     s3.New(sess)
 func (s *Session) ClientConfig(serviceName string, cfgs ...*aws.Config) client.Config {
+	// Backwards compatibility, the error will be eaten if user calls ClientConfig
+	// directly. All SDK services will use ClientconfigWithError.
+	cfg, _ := s.clientConfigWithErr(serviceName, cfgs...)
+
+	return cfg
+}
+
+func (s *Session) clientConfigWithErr(serviceName string, cfgs ...*aws.Config) (client.Config, error) {
 	s = s.Copy(cfgs...)
-	endpoint, signingRegion := endpoints.NormalizeEndpoint(
+
-		aws.StringValue(s.Config.Endpoint), serviceName,
+	var resolved endpoints.ResolvedEndpoint
-		aws.StringValue(s.Config.Region), aws.BoolValue(s.Config.DisableSSL))
+	var err error
+
+	region := aws.StringValue(s.Config.Region)
+
+	if endpoint := aws.StringValue(s.Config.Endpoint); len(endpoint) != 0 {
+		resolved.URL = endpoints.AddScheme(endpoint, aws.BoolValue(s.Config.DisableSSL))
+		resolved.SigningRegion = region
+	} else {
+		resolved, err = s.Config.EndpointResolver.EndpointFor(
+			serviceName, region,
+			func(opt *endpoints.Options) {
+				opt.DisableSSL = aws.BoolValue(s.Config.DisableSSL)
+				opt.UseDualStack = aws.BoolValue(s.Config.UseDualStack)
+			},
+		)
+	}
 
 	return client.Config{
 		Config:        s.Config,
 		Handlers:      s.Handlers,
-		Endpoint:      endpoint,
+		Endpoint:      resolved.URL,
-		SigningRegion: signingRegion,
+		SigningRegion: resolved.SigningRegion,
-	}
+		SigningName:   resolved.SigningName,
+	}, err
 }

vendor/github.com/aws/aws-sdk-go/aws/session/shared_config.go

@@ -0,0 +1,295 @@
+package session
+
+import (
+	"fmt"
+	"io/ioutil"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/go-ini/ini"
+)
+
+const (
+	// Static Credentials group
+	accessKeyIDKey  = `aws_access_key_id`     // group required
+	secretAccessKey = `aws_secret_access_key` // group required
+	sessionTokenKey = `aws_session_token`     // optional
+
+	// Assume Role Credentials group
+	roleArnKey         = `role_arn`          // group required
+	sourceProfileKey   = `source_profile`    // group required
+	externalIDKey      = `external_id`       // optional
+	mfaSerialKey       = `mfa_serial`        // optional
+	roleSessionNameKey = `role_session_name` // optional
+
+	// Additional Config fields
+	regionKey = `region`
+
+	// DefaultSharedConfigProfile is the default profile to be used when
+	// loading configuration from the config files if another profile name
+	// is not provided.
+	DefaultSharedConfigProfile = `default`
+)
+
+type assumeRoleConfig struct {
+	RoleARN         string
+	SourceProfile   string
+	ExternalID      string
+	MFASerial       string
+	RoleSessionName string
+}
+
+// sharedConfig represents the configuration fields of the SDK config files.
+type sharedConfig struct {
+	// Credentials values from the config file. Both aws_access_key_id
+	// and aws_secret_access_key must be provided together in the same file
+	// to be considered valid. The values will be ignored if not a complete group.
+	// aws_session_token is an optional field that can be provided if both of the
+	// other two fields are also provided.
+	//
+	//	aws_access_key_id
+	//	aws_secret_access_key
+	//	aws_session_token
+	Creds credentials.Value
+
+	AssumeRole       assumeRoleConfig
+	AssumeRoleSource *sharedConfig
+
+	// Region is the region the SDK should use for looking up AWS service endpoints
+	// and signing requests.
+	//
+	//	region
+	Region string
+}
+
+type sharedConfigFile struct {
+	Filename string
+	IniData  *ini.File
+}
+
+// loadSharedConfig retrieves the configuration from the list of files
+// using the profile provided. The order the files are listed will determine
+// precedence. Values in subsequent files will overwrite values defined in
+// earlier files.
+//
+// For example, given two files A and B. Both define credentials. If the order
+// of the files are A then B, B's credential values will be used instead of A's.
+//
+// See sharedConfig.setFromFile for information how the config files
+// will be loaded.
+func loadSharedConfig(profile string, filenames []string) (sharedConfig, error) {
+	if len(profile) == 0 {
+		profile = DefaultSharedConfigProfile
+	}
+
+	files, err := loadSharedConfigIniFiles(filenames)
+	if err != nil {
+		return sharedConfig{}, err
+	}
+
+	cfg := sharedConfig{}
+	if err = cfg.setFromIniFiles(profile, files); err != nil {
+		return sharedConfig{}, err
+	}
+
+	if len(cfg.AssumeRole.SourceProfile) > 0 {
+		if err := cfg.setAssumeRoleSource(profile, files); err != nil {
+			return sharedConfig{}, err
+		}
+	}
+
+	return cfg, nil
+}
+
+func loadSharedConfigIniFiles(filenames []string) ([]sharedConfigFile, error) {
+	files := make([]sharedConfigFile, 0, len(filenames))
+
+	for _, filename := range filenames {
+		b, err := ioutil.ReadFile(filename)
+		if err != nil {
+			// Skip files which can't be opened and read for whatever reason
+			continue
+		}
+
+		f, err := ini.Load(b)
+		if err != nil {
+			return nil, SharedConfigLoadError{Filename: filename}
+		}
+
+		files = append(files, sharedConfigFile{
+			Filename: filename, IniData: f,
+		})
+	}
+
+	return files, nil
+}
+
+func (cfg *sharedConfig) setAssumeRoleSource(origProfile string, files []sharedConfigFile) error {
+	var assumeRoleSrc sharedConfig
+
+	// Multiple level assume role chains are not support
+	if cfg.AssumeRole.SourceProfile == origProfile {
+		assumeRoleSrc = *cfg
+		assumeRoleSrc.AssumeRole = assumeRoleConfig{}
+	} else {
+		err := assumeRoleSrc.setFromIniFiles(cfg.AssumeRole.SourceProfile, files)
+		if err != nil {
+			return err
+		}
+	}
+
+	if len(assumeRoleSrc.Creds.AccessKeyID) == 0 {
+		return SharedConfigAssumeRoleError{RoleARN: cfg.AssumeRole.RoleARN}
+	}
+
+	cfg.AssumeRoleSource = &assumeRoleSrc
+
+	return nil
+}
+
+func (cfg *sharedConfig) setFromIniFiles(profile string, files []sharedConfigFile) error {
+	// Trim files from the list that don't exist.
+	for _, f := range files {
+		if err := cfg.setFromIniFile(profile, f); err != nil {
+			if _, ok := err.(SharedConfigProfileNotExistsError); ok {
+				// Ignore proviles missings
+				continue
+			}
+			return err
+		}
+	}
+
+	return nil
+}
+
+// setFromFile loads the configuration from the file using
+// the profile provided. A sharedConfig pointer type value is used so that
+// multiple config file loadings can be chained.
+//
+// Only loads complete logically grouped values, and will not set fields in cfg
+// for incomplete grouped values in the config. Such as credentials. For example
+// if a config file only includes aws_access_key_id but no aws_secret_access_key
+// the aws_access_key_id will be ignored.
+func (cfg *sharedConfig) setFromIniFile(profile string, file sharedConfigFile) error {
+	section, err := file.IniData.GetSection(profile)
+	if err != nil {
+		// Fallback to to alternate profile name: profile <name>
+		section, err = file.IniData.GetSection(fmt.Sprintf("profile %s", profile))
+		if err != nil {
+			return SharedConfigProfileNotExistsError{Profile: profile, Err: err}
+		}
+	}
+
+	// Shared Credentials
+	akid := section.Key(accessKeyIDKey).String()
+	secret := section.Key(secretAccessKey).String()
+	if len(akid) > 0 && len(secret) > 0 {
+		cfg.Creds = credentials.Value{
+			AccessKeyID:     akid,
+			SecretAccessKey: secret,
+			SessionToken:    section.Key(sessionTokenKey).String(),
+			ProviderName:    fmt.Sprintf("SharedConfigCredentials: %s", file.Filename),
+		}
+	}
+
+	// Assume Role
+	roleArn := section.Key(roleArnKey).String()
+	srcProfile := section.Key(sourceProfileKey).String()
+	if len(roleArn) > 0 && len(srcProfile) > 0 {
+		cfg.AssumeRole = assumeRoleConfig{
+			RoleARN:         roleArn,
+			SourceProfile:   srcProfile,
+			ExternalID:      section.Key(externalIDKey).String(),
+			MFASerial:       section.Key(mfaSerialKey).String(),
+			RoleSessionName: section.Key(roleSessionNameKey).String(),
+		}
+	}
+
+	// Region
+	if v := section.Key(regionKey).String(); len(v) > 0 {
+		cfg.Region = v
+	}
+
+	return nil
+}
+
+// SharedConfigLoadError is an error for the shared config file failed to load.
+type SharedConfigLoadError struct {
+	Filename string
+	Err      error
+}
+
+// Code is the short id of the error.
+func (e SharedConfigLoadError) Code() string {
+	return "SharedConfigLoadError"
+}
+
+// Message is the description of the error
+func (e SharedConfigLoadError) Message() string {
+	return fmt.Sprintf("failed to load config file, %s", e.Filename)
+}
+
+// OrigErr is the underlying error that caused the failure.
+func (e SharedConfigLoadError) OrigErr() error {
+	return e.Err
+}
+
+// Error satisfies the error interface.
+func (e SharedConfigLoadError) Error() string {
+	return awserr.SprintError(e.Code(), e.Message(), "", e.Err)
+}
+
+// SharedConfigProfileNotExistsError is an error for the shared config when
+// the profile was not find in the config file.
+type SharedConfigProfileNotExistsError struct {
+	Profile string
+	Err     error
+}
+
+// Code is the short id of the error.
+func (e SharedConfigProfileNotExistsError) Code() string {
+	return "SharedConfigProfileNotExistsError"
+}
+
+// Message is the description of the error
+func (e SharedConfigProfileNotExistsError) Message() string {
+	return fmt.Sprintf("failed to get profile, %s", e.Profile)
+}
+
+// OrigErr is the underlying error that caused the failure.
+func (e SharedConfigProfileNotExistsError) OrigErr() error {
+	return e.Err
+}
+
+// Error satisfies the error interface.
+func (e SharedConfigProfileNotExistsError) Error() string {
+	return awserr.SprintError(e.Code(), e.Message(), "", e.Err)
+}
+
+// SharedConfigAssumeRoleError is an error for the shared config when the
+// profile contains assume role information, but that information is invalid
+// or not complete.
+type SharedConfigAssumeRoleError struct {
+	RoleARN string
+}
+
+// Code is the short id of the error.
+func (e SharedConfigAssumeRoleError) Code() string {
+	return "SharedConfigAssumeRoleError"
+}
+
+// Message is the description of the error
+func (e SharedConfigAssumeRoleError) Message() string {
+	return fmt.Sprintf("failed to load assume role for %s, source profile has no shared credentials",
+		e.RoleARN)
+}
+
+// OrigErr is the underlying error that caused the failure.
+func (e SharedConfigAssumeRoleError) OrigErr() error {
+	return nil
+}
+
+// Error satisfies the error interface.
+func (e SharedConfigAssumeRoleError) Error() string {
+	return awserr.SprintError(e.Code(), e.Message(), "", nil)
+}

vendor/github.com/aws/aws-sdk-go/aws/signer/v4/uri_path.go

@@ -0,0 +1,24 @@
+// +build go1.5
+
+package v4
+
+import (
+	"net/url"
+	"strings"
+)
+
+func getURIPath(u *url.URL) string {
+	var uri string
+
+	if len(u.Opaque) > 0 {
+		uri = "/" + strings.Join(strings.Split(u.Opaque, "/")[3:], "/")
+	} else {
+		uri = u.EscapedPath()
+	}
+
+	if len(uri) == 0 {
+		uri = "/"
+	}
+
+	return uri
+}

vendor/github.com/aws/aws-sdk-go/aws/signer/v4/v4.go

@@ -2,6 +2,56 @@
 //
 // Provides request signing for request that need to be signed with
 // AWS V4 Signatures.
+//
+// Standalone Signer
+//
+// Generally using the signer outside of the SDK should not require any additional
+// logic when using Go v1.5 or higher. The signer does this by taking advantage
+// of the URL.EscapedPath method. If your request URI requires additional escaping
+// you many need to use the URL.Opaque to define what the raw URI should be sent
+// to the service as.
+//
+// The signer will first check the URL.Opaque field, and use its value if set.
+// The signer does require the URL.Opaque field to be set in the form of:
+//
+//     "//<hostname>/<path>"
+//
+//     // e.g.
+//     "//example.com/some/path"
+//
+// The leading "//" and hostname are required or the URL.Opaque escaping will
+// not work correctly.
+//
+// If URL.Opaque is not set the signer will fallback to the URL.EscapedPath()
+// method and using the returned value. If you're using Go v1.4 you must set
+// URL.Opaque if the URI path needs escaping. If URL.Opaque is not set with
+// Go v1.5 the signer will fallback to URL.Path.
+//
+// AWS v4 signature validation requires that the canonical string's URI path
+// element must be the URI escaped form of the HTTP request's path.
+// http://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html
+//
+// The Go HTTP client will perform escaping automatically on the request. Some
+// of these escaping may cause signature validation errors because the HTTP
+// request differs from the URI path or query that the signature was generated.
+// https://golang.org/pkg/net/url/#URL.EscapedPath
+//
+// Because of this, it is recommended that when using the signer outside of the
+// SDK that explicitly escaping the request prior to being signed is preferable,
+// and will help prevent signature validation errors. This can be done by setting
+// the URL.Opaque or URL.RawPath. The SDK will use URL.Opaque first and then
+// call URL.EscapedPath() if Opaque is not set.
+//
+// If signing a request intended for HTTP2 server, and you're using Go 1.6.2
+// through 1.7.4 you should use the URL.RawPath as the pre-escaped form of the
+// request URL. https://github.com/golang/go/issues/16847 points to a bug in
+// Go pre 1.8 that failes to make HTTP2 requests using absolute URL in the HTTP
+// message. URL.Opaque generally will force Go to make requests with absolute URL.
+// URL.RawPath does not do this, but RawPath must be a valid escaping of Path
+// or url.EscapedPath will ignore the RawPath escaping.
+//
+// Test `TestStandaloneSign` provides a complete example of using the signer
+// outside of the SDK and pre-escaping the URI path.
 package v4
 
 import (
@@ -11,6 +61,7 @@ import (
 	"encoding/hex"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"net/http"
 	"net/url"
 	"sort"
@@ -38,6 +89,7 @@ var ignoredHeaders = rules{
 		mapRule{
 			"Authorization":   struct{}{},
 			"User-Agent":      struct{}{},
+			"X-Amzn-Trace-Id": struct{}{},
 		},
 	},
 }
@@ -119,6 +171,25 @@ type Signer struct {
 	// request's query string.
 	DisableHeaderHoisting bool
 
+	// Disables the automatic escaping of the URI path of the request for the
+	// siganture's canonical string's path. For services that do not need additional
+	// escaping then use this to disable the signer escaping the path.
+	//
+	// S3 is an example of a service that does not need additional escaping.
+	//
+	// http://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html
+	DisableURIPathEscaping bool
+
+	// Disales the automatical setting of the HTTP request's Body field with the
+	// io.ReadSeeker passed in to the signer. This is useful if you're using a
+	// custom wrapper around the body for the io.ReadSeeker and want to preserve
+	// the Body value on the Request.Body.
+	//
+	// This does run the risk of signing a request with a body that will not be
+	// sent in the request. Need to ensure that the underlying data of the Body
+	// values are the same.
+	DisableRequestBodyOverwrite bool
+
 	// currentTimeFn returns the time value which represents the current time.
 	// This value should only be used for testing. If it is nil the default
 	// time.Now will be used.
@@ -150,6 +221,8 @@ type signingCtx struct {
 	ExpireTime       time.Duration
 	SignedHeaderVals http.Header
 
+	DisableURIPathEscaping bool
+
 	credValues         credentials.Value
 	isPresign          bool
 	formattedTime      string
@@ -175,6 +248,12 @@ type signingCtx struct {
 // is not needed as the full request context will be captured by the http.Request
 // value. It is included for reference though.
 //
+// Sign will set the request's Body to be the `body` parameter passed in. If
+// the body is not already an io.ReadCloser, it will be wrapped within one. If
+// a `nil` body parameter passed to Sign, the request's Body field will be
+// also set to nil. Its important to note that this functionality will not
+// change the request's ContentLength of the request.
+//
 // Sign differs from Presign in that it will sign the request using HTTP
 // header values. This type of signing is intended for http.Request values that
 // will not be shared, or are shared in a way the header values on the request
@@ -237,14 +316,14 @@ func (v4 Signer) signWithBody(r *http.Request, body io.ReadSeeker, service, regi
 		isPresign:              exp != 0,
 		ServiceName:            service,
 		Region:                 region,
+		DisableURIPathEscaping: v4.DisableURIPathEscaping,
+	}
+
+	for key := range ctx.Query {
+		sort.Strings(ctx.Query[key])
 	}
 
 	if ctx.isRequestSigned() {
-		if !v4.Credentials.IsExpired() && currentTimeFn().Before(ctx.Time.Add(10*time.Minute)) {
-			// If the request is already signed, and the credentials have not
-			// expired, and the request is not too old ignore the signing request.
-			return ctx.SignedHeaderVals, nil
-		}
 		ctx.Time = currentTimeFn()
 		ctx.handlePresignRemoval()
 	}
@@ -258,6 +337,20 @@ func (v4 Signer) signWithBody(r *http.Request, body io.ReadSeeker, service, regi
 	ctx.assignAmzQueryValues()
 	ctx.build(v4.DisableHeaderHoisting)
 
+	// If the request is not presigned the body should be attached to it. This
+	// prevents the confusion of wanting to send a signed request without
+	// the body the request was signed for attached.
+	if !(v4.DisableRequestBodyOverwrite || ctx.isPresign) {
+		var reader io.ReadCloser
+		if body != nil {
+			var ok bool
+			if reader, ok = body.(io.ReadCloser); !ok {
+				reader = ioutil.NopCloser(body)
+			}
+		}
+		r.Body = reader
+	}
+
 	if v4.Debug.Matches(aws.LogDebugWithSigning) {
 		v4.logSigningInfo(ctx)
 	}
@@ -338,6 +431,14 @@ func signSDKRequestWithCurrTime(req *request.Request, curTimeFn func() time.Time
 		v4.Logger = req.Config.Logger
 		v4.DisableHeaderHoisting = req.NotHoist
 		v4.currentTimeFn = curTimeFn
+		if name == "s3" {
+			// S3 service should not have any escaping applied
+			v4.DisableURIPathEscaping = true
+		}
+		// Prevents setting the HTTPRequest's Body. Since the Body could be
+		// wrapped in a custom io.Closer that we do not want to be stompped
+		// on top of by the signer.
+		v4.DisableRequestBodyOverwrite = true
 	})
 
 	signingTime := req.Time
@@ -345,7 +446,9 @@ func signSDKRequestWithCurrTime(req *request.Request, curTimeFn func() time.Time
 		signingTime = req.LastSignedAt
 	}
 
-	signedHeaders, err := v4.signWithBody(req.HTTPRequest, req.Body, name, region, req.ExpireTime, signingTime)
+	signedHeaders, err := v4.signWithBody(req.HTTPRequest, req.GetBody(),
+		name, region, req.ExpireTime, signingTime,
+	)
 	if err != nil {
 		req.Error = err
 		req.SignedHeaderVals = nil
@@ -356,7 +459,7 @@ func signSDKRequestWithCurrTime(req *request.Request, curTimeFn func() time.Time
 	req.LastSignedAt = curTimeFn()
 }
 
-const logSignInfoMsg = `DEBUG: Request Signiture:
+const logSignInfoMsg = `DEBUG: Request Signature:
 ---[ CANONICAL STRING  ]-----------------------------
 %s
 ---[ STRING TO SIGN ]--------------------------------
@@ -492,17 +595,10 @@ func (ctx *signingCtx) buildCanonicalHeaders(r rule, header http.Header) {
 
 func (ctx *signingCtx) buildCanonicalString() {
 	ctx.Request.URL.RawQuery = strings.Replace(ctx.Query.Encode(), "+", "%20", -1)
-	uri := ctx.Request.URL.Opaque
-	if uri != "" {
-		uri = "/" + strings.Join(strings.Split(uri, "/")[3:], "/")
-	} else {
-		uri = ctx.Request.URL.Path
-	}
-	if uri == "" {
-		uri = "/"
-	}
 
-	if ctx.ServiceName != "s3" {
+	uri := getURIPath(ctx.Request.URL)
+
+	if !ctx.DisableURIPathEscaping {
 		uri = rest.EscapePath(uri, false)
 	}
 
@@ -545,7 +641,7 @@ func (ctx *signingCtx) buildBodyDigest() {
 		} else {
 			hash = hex.EncodeToString(makeSha256Reader(ctx.Body))
 		}
-		if ctx.ServiceName == "s3" {
+		if ctx.ServiceName == "s3" || ctx.ServiceName == "glacier" {
 			ctx.Request.Header.Set("X-Amz-Content-Sha256", hash)
 		}
 	}

vendor/github.com/aws/aws-sdk-go/aws/types.go

@@ -5,7 +5,13 @@ import (
 	"sync"
 )
 
-// ReadSeekCloser wraps a io.Reader returning a ReaderSeekerCloser
+// ReadSeekCloser wraps a io.Reader returning a ReaderSeekerCloser. Should
+// only be used with an io.Reader that is also an io.Seeker. Doing so may
+// cause request signature errors, or request body's not sent for GET, HEAD
+// and DELETE HTTP methods.
+//
+// Deprecated: Should only be used with io.ReadSeeker. If using for
+// S3 PutObject to stream content use s3manager.Uploader instead.
 func ReadSeekCloser(r io.Reader) ReaderSeekerCloser {
 	return ReaderSeekerCloser{r}
 }
@@ -44,6 +50,12 @@ func (r ReaderSeekerCloser) Seek(offset int64, whence int) (int64, error) {
 	return int64(0), nil
 }
 
+// IsSeeker returns if the underlying reader is also a seeker.
+func (r ReaderSeekerCloser) IsSeeker() bool {
+	_, ok := r.r.(io.Seeker)
+	return ok
+}
+
 // Close closes the ReaderSeekerCloser.
 //
 // If the ReaderSeekerCloser is not an io.Closer nothing will be done.

vendor/github.com/aws/aws-sdk-go/aws/version.go

@@ -5,4 +5,4 @@ package aws
 const SDKName = "aws-sdk-go"
 
 // SDKVersion is the version of this SDK
-const SDKVersion = "1.2.4"
+const SDKVersion = "1.6.9"

vendor/github.com/aws/aws-sdk-go/private/endpoints/endpoints.go

@@ -1,65 +0,0 @@
-// Package endpoints validates regional endpoints for services.
-package endpoints
-
-//go:generate go run ../model/cli/gen-endpoints/main.go endpoints.json endpoints_map.go
-//go:generate gofmt -s -w endpoints_map.go
-
-import (
-	"fmt"
-	"regexp"
-	"strings"
-)
-
-// NormalizeEndpoint takes and endpoint and service API information to return a
-// normalized endpoint and signing region.  If the endpoint is not an empty string
-// the service name and region will be used to look up the service's API endpoint.
-// If the endpoint is provided the scheme will be added if it is not present.
-func NormalizeEndpoint(endpoint, serviceName, region string, disableSSL bool) (normEndpoint, signingRegion string) {
-	if endpoint == "" {
-		return EndpointForRegion(serviceName, region, disableSSL)
-	}
-
-	return AddScheme(endpoint, disableSSL), ""
-}
-
-// EndpointForRegion returns an endpoint and its signing region for a service and region.
-// if the service and region pair are not found endpoint and signingRegion will be empty.
-func EndpointForRegion(svcName, region string, disableSSL bool) (endpoint, signingRegion string) {
-	derivedKeys := []string{
-		region + "/" + svcName,
-		region + "/*",
-		"*/" + svcName,
-		"*/*",
-	}
-
-	for _, key := range derivedKeys {
-		if val, ok := endpointsMap.Endpoints[key]; ok {
-			ep := val.Endpoint
-			ep = strings.Replace(ep, "{region}", region, -1)
-			ep = strings.Replace(ep, "{service}", svcName, -1)
-
-			endpoint = ep
-			signingRegion = val.SigningRegion
-			break
-		}
-	}
-
-	return AddScheme(endpoint, disableSSL), signingRegion
-}
-
-// Regular expression to determine if the endpoint string is prefixed with a scheme.
-var schemeRE = regexp.MustCompile("^([^:]+)://")
-
-// AddScheme adds the HTTP or HTTPS schemes to a endpoint URL if there is no
-// scheme. If disableSSL is true HTTP will be added instead of the default HTTPS.
-func AddScheme(endpoint string, disableSSL bool) string {
-	if endpoint != "" && !schemeRE.MatchString(endpoint) {
-		scheme := "https"
-		if disableSSL {
-			scheme = "http"
-		}
-		endpoint = fmt.Sprintf("%s://%s", scheme, endpoint)
-	}
-
-	return endpoint
-}

vendor/github.com/aws/aws-sdk-go/private/endpoints/endpoints_map.go

@@ -1,88 +0,0 @@
-package endpoints
-
-// THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT.
-
-type endpointStruct struct {
-	Version   int
-	Endpoints map[string]endpointEntry
-}
-
-type endpointEntry struct {
-	Endpoint      string
-	SigningRegion string
-}
-
-var endpointsMap = endpointStruct{
-	Version: 2,
-	Endpoints: map[string]endpointEntry{
-		"*/*": {
-			Endpoint: "{service}.{region}.amazonaws.com",
-		},
-		"*/cloudfront": {
-			Endpoint:      "cloudfront.amazonaws.com",
-			SigningRegion: "us-east-1",
-		},
-		"*/cloudsearchdomain": {
-			Endpoint:      "",
-			SigningRegion: "us-east-1",
-		},
-		"*/data.iot": {
-			Endpoint:      "",
-			SigningRegion: "us-east-1",
-		},
-		"*/ec2metadata": {
-			Endpoint: "http://169.254.169.254/latest",
-		},
-		"*/iam": {
-			Endpoint:      "iam.amazonaws.com",
-			SigningRegion: "us-east-1",
-		},
-		"*/importexport": {
-			Endpoint:      "importexport.amazonaws.com",
-			SigningRegion: "us-east-1",
-		},
-		"*/route53": {
-			Endpoint:      "route53.amazonaws.com",
-			SigningRegion: "us-east-1",
-		},
-		"*/s3": {
-			Endpoint: "s3-{region}.amazonaws.com",
-		},
-		"*/sts": {
-			Endpoint:      "sts.amazonaws.com",
-			SigningRegion: "us-east-1",
-		},
-		"*/waf": {
-			Endpoint:      "waf.amazonaws.com",
-			SigningRegion: "us-east-1",
-		},
-		"cn-north-1/*": {
-			Endpoint: "{service}.{region}.amazonaws.com.cn",
-		},
-		"cn-north-1/ec2metadata": {
-			Endpoint: "http://169.254.169.254/latest",
-		},
-		"eu-central-1/s3": {
-			Endpoint: "{service}.{region}.amazonaws.com",
-		},
-		"us-east-1/s3": {
-			Endpoint: "s3.amazonaws.com",
-		},
-		"us-east-1/sdb": {
-			Endpoint:      "sdb.amazonaws.com",
-			SigningRegion: "us-east-1",
-		},
-		"us-gov-west-1/ec2metadata": {
-			Endpoint: "http://169.254.169.254/latest",
-		},
-		"us-gov-west-1/iam": {
-			Endpoint: "iam.us-gov.amazonaws.com",
-		},
-		"us-gov-west-1/s3": {
-			Endpoint: "s3-{region}.amazonaws.com",
-		},
-		"us-gov-west-1/sts": {
-			Endpoint: "sts.us-gov-west-1.amazonaws.com",
-		},
-	},
-}

vendor/github.com/aws/aws-sdk-go/private/protocol/query/build.go

@@ -1,7 +1,7 @@
-// Package query provides serialisation of AWS query requests, and responses.
+// Package query provides serialization of AWS query requests, and responses.
 package query
 
-//go:generate go run ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/input/query.json build_test.go
+//go:generate go run -tags codegen ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/input/query.json build_test.go
 
 import (
 	"net/url"

vendor/github.com/aws/aws-sdk-go/private/protocol/query/queryutil/queryutil.go

@@ -76,6 +76,10 @@ func (q *queryParser) parseStruct(v url.Values, value reflect.Value, prefix stri
 		if field.PkgPath != "" {
 			continue // ignore unexported fields
 		}
+		if field.Tag.Get("ignore") != "" {
+			continue
+		}
+
 
 		if protocol.CanSetIdempotencyToken(value.Field(i), field) {
 			token := protocol.GetIdempotencyToken()

vendor/github.com/aws/aws-sdk-go/private/protocol/query/unmarshal.go

@@ -1,6 +1,6 @@
 package query
 
-//go:generate go run ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/output/query.json unmarshal_test.go
+//go:generate go run -tags codegen ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/output/query.json unmarshal_test.go
 
 import (
 	"encoding/xml"

vendor/github.com/aws/aws-sdk-go/private/protocol/rest/build.go

@@ -14,6 +14,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/awserr"
 	"github.com/aws/aws-sdk-go/aws/request"
 )
@@ -46,14 +47,29 @@ var BuildHandler = request.NamedHandler{Name: "awssdk.rest.Build", Fn: Build}
 func Build(r *request.Request) {
 	if r.ParamsFilled() {
 		v := reflect.ValueOf(r.Params).Elem()
-		buildLocationElements(r, v)
+		buildLocationElements(r, v, false)
 		buildBody(r, v)
 	}
 }
 
-func buildLocationElements(r *request.Request, v reflect.Value) {
+// BuildAsGET builds the REST component of a service request with the ability to hoist
+// data from the body.
+func BuildAsGET(r *request.Request) {
+	if r.ParamsFilled() {
+		v := reflect.ValueOf(r.Params).Elem()
+		buildLocationElements(r, v, true)
+		buildBody(r, v)
+	}
+}
+
+func buildLocationElements(r *request.Request, v reflect.Value, buildGETQuery bool) {
 	query := r.HTTPRequest.URL.Query()
 
+	// Setup the raw path to match the base path pattern. This is needed
+	// so that when the path is mutated a custom escaped version can be
+	// stored in RawPath that will be used by the Go client.
+	r.HTTPRequest.URL.RawPath = r.HTTPRequest.URL.Path
+
 	for i := 0; i < v.NumField(); i++ {
 		m := v.Field(i)
 		if n := v.Type().Field(i).Name; n[0:1] == strings.ToLower(n[0:1]) {
@@ -72,6 +88,9 @@ func buildLocationElements(r *request.Request, v reflect.Value) {
 			if !m.IsValid() {
 				continue
 			}
+			if field.Tag.Get("ignore") != "" {
+				continue
+			}
 
 			var err error
 			switch field.Tag.Get("location") {
@@ -83,6 +102,10 @@ func buildLocationElements(r *request.Request, v reflect.Value) {
 				err = buildURI(r.HTTPRequest.URL, m, name)
 			case "querystring":
 				err = buildQueryString(query, m, name)
+			default:
+				if buildGETQuery {
+					err = buildQueryString(query, m, name)
+				}
 			}
 			r.Error = err
 		}
@@ -92,7 +115,9 @@ func buildLocationElements(r *request.Request, v reflect.Value) {
 	}
 
 	r.HTTPRequest.URL.RawQuery = query.Encode()
-	updatePath(r.HTTPRequest.URL, r.HTTPRequest.URL.Path)
+	if !aws.BoolValue(r.Config.DisableRestProtocolURICleaning) {
+		cleanPath(r.HTTPRequest.URL)
+	}
 }
 
 func buildBody(r *request.Request, v reflect.Value) {
@@ -156,10 +181,11 @@ func buildURI(u *url.URL, v reflect.Value, name string) error {
 		return awserr.New("SerializationError", "failed to encode REST request", err)
 	}
 
-	uri := u.Path
+	u.Path = strings.Replace(u.Path, "{"+name+"}", value, -1)
-	uri = strings.Replace(uri, "{"+name+"}", EscapePath(value, true), -1)
+	u.Path = strings.Replace(u.Path, "{"+name+"+}", value, -1)
-	uri = strings.Replace(uri, "{"+name+"+}", EscapePath(value, false), -1)
+
-	u.Path = uri
+	u.RawPath = strings.Replace(u.RawPath, "{"+name+"}", EscapePath(value, true), -1)
+	u.RawPath = strings.Replace(u.RawPath, "{"+name+"+}", EscapePath(value, false), -1)
 
 	return nil
 }
@@ -193,25 +219,17 @@ func buildQueryString(query url.Values, v reflect.Value, name string) error {
 	return nil
 }
 
-func updatePath(url *url.URL, urlPath string) {
+func cleanPath(u *url.URL) {
-	scheme, query := url.Scheme, url.RawQuery
+	hasSlash := strings.HasSuffix(u.Path, "/")
 
-	hasSlash := strings.HasSuffix(urlPath, "/")
+	// clean up path, removing duplicate `/`
+	u.Path = path.Clean(u.Path)
+	u.RawPath = path.Clean(u.RawPath)
 
-	// clean up path
+	if hasSlash && !strings.HasSuffix(u.Path, "/") {
-	urlPath = path.Clean(urlPath)
+		u.Path += "/"
-	if hasSlash && !strings.HasSuffix(urlPath, "/") {
+		u.RawPath += "/"
-		urlPath += "/"
 	}
-
-	// get formatted URL minus scheme so we can build this into Opaque
-	url.Scheme, url.Path, url.RawQuery = "", "", ""
-	s := url.String()
-	url.Scheme = scheme
-	url.RawQuery = query
-
-	// build opaque URI
-	url.Opaque = s + urlPath
 }
 
 // EscapePath escapes part of a URL path in Amazon style

vendor/github.com/aws/aws-sdk-go/private/protocol/rest/unmarshal.go

@@ -1,6 +1,7 @@
 package rest
 
 import (
+	"bytes"
 	"encoding/base64"
 	"fmt"
 	"io"
@@ -11,7 +12,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/awserr"
 	"github.com/aws/aws-sdk-go/aws/request"
 )
@@ -70,10 +70,16 @@ func unmarshalBody(r *request.Request, v reflect.Value) {
 						}
 					default:
 						switch payload.Type().String() {
-						case "io.ReadSeeker":
+						case "io.ReadCloser":
-							payload.Set(reflect.ValueOf(aws.ReadSeekCloser(r.HTTPResponse.Body)))
-						case "aws.ReadSeekCloser", "io.ReadCloser":
 							payload.Set(reflect.ValueOf(r.HTTPResponse.Body))
+						case "io.ReadSeeker":
+							b, err := ioutil.ReadAll(r.HTTPResponse.Body)
+							if err != nil {
+								r.Error = awserr.New("SerializationError",
+									"failed to read response body", err)
+								return
+							}
+							payload.Set(reflect.ValueOf(ioutil.NopCloser(bytes.NewReader(b))))
 						default:
 							io.Copy(ioutil.Discard, r.HTTPResponse.Body)
 							defer r.HTTPResponse.Body.Close()

vendor/github.com/aws/aws-sdk-go/private/protocol/restxml/restxml.go

@@ -1,9 +1,9 @@
-// Package restxml provides RESTful XML serialisation of AWS
+// Package restxml provides RESTful XML serialization of AWS
 // requests and responses.
 package restxml
 
-//go:generate go run ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/input/rest-xml.json build_test.go
+//go:generate go run -tags codegen ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/input/rest-xml.json build_test.go
-//go:generate go run ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/output/rest-xml.json unmarshal_test.go
+//go:generate go run -tags codegen ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/output/rest-xml.json unmarshal_test.go
 
 import (
 	"bytes"

vendor/github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil/build.go

@@ -1,4 +1,4 @@
-// Package xmlutil provides XML serialisation of AWS requests and responses.
+// Package xmlutil provides XML serialization of AWS requests and responses.
 package xmlutil
 
 import (
@@ -127,6 +127,10 @@ func (b *xmlBuilder) buildStruct(value reflect.Value, current *XMLNode, tag refl
 		if field.PkgPath != "" {
 			continue // ignore unexported fields
 		}
+		if field.Tag.Get("ignore") != "" {
+			continue
+		}
+
 
 		mTag := field.Tag
 		if mTag.Get("location") != "" { // skip non-body members

vendor/github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil/unmarshal.go

@@ -111,11 +111,8 @@ func parseStruct(r reflect.Value, node *XMLNode, tag reflect.StructTag) error {
 		elems := node.Children[name]
 
 		if elems == nil { // try to find the field in attributes
-			for _, a := range node.Attr {
+			if val, ok := node.findElem(name); ok {
-				if name == a.Name.Local {
+				elems = []*XMLNode{{Text: val}}
-					// turn this into a text node for de-serializing
-					elems = []*XMLNode{{Text: a.Value}}
-				}
 			}
 		}
 

vendor/github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil/xml_to_struct.go

@@ -2,6 +2,7 @@ package xmlutil
 
 import (
 	"encoding/xml"
+	"fmt"
 	"io"
 	"sort"
 )
@@ -12,6 +13,9 @@ type XMLNode struct {
 	Children map[string][]*XMLNode `json:",omitempty"`
 	Text     string                `json:",omitempty"`
 	Attr     []xml.Attr            `json:",omitempty"`
+
+	namespaces map[string]string
+	parent     *XMLNode
 }
 
 // NewXMLElement returns a pointer to a new XMLNode initialized to default values.
@@ -59,21 +63,54 @@ func XMLToStruct(d *xml.Decoder, s *xml.StartElement) (*XMLNode, error) {
 				slice = []*XMLNode{}
 			}
 			node, e := XMLToStruct(d, &el)
+			out.findNamespaces()
 			if e != nil {
 				return out, e
 			}
 			node.Name = typed.Name
+			node.findNamespaces()
+			tempOut := *out
+			// Save into a temp variable, simply because out gets squashed during
+			// loop iterations
+			node.parent = &tempOut
 			slice = append(slice, node)
 			out.Children[name] = slice
 		case xml.EndElement:
 			if s != nil && s.Name.Local == typed.Name.Local { // matching end token
 				return out, nil
 			}
+			out = &XMLNode{}
 		}
 	}
 	return out, nil
 }
 
+func (n *XMLNode) findNamespaces() {
+	ns := map[string]string{}
+	for _, a := range n.Attr {
+		if a.Name.Space == "xmlns" {
+			ns[a.Value] = a.Name.Local
+		}
+	}
+
+	n.namespaces = ns
+}
+
+func (n *XMLNode) findElem(name string) (string, bool) {
+	for node := n; node != nil; node = node.parent {
+		for _, a := range node.Attr {
+			namespace := a.Name.Space
+			if v, ok := node.namespaces[namespace]; ok {
+				namespace = v
+			}
+			if name == fmt.Sprintf("%s:%s", namespace, a.Name.Local) {
+				return a.Value, true
+			}
+		}
+	}
+	return "", false
+}
+
 // StructToXML writes an XMLNode to a xml.Encoder as tokens.
 func StructToXML(e *xml.Encoder, node *XMLNode, sorted bool) error {
 	e.EncodeToken(xml.StartElement{Name: node.Name, Attr: node.Attr})

vendor/github.com/aws/aws-sdk-go/service/cloudfront/sign/sign_cookie.go

@@ -17,7 +17,7 @@ const (
 	CookieKeyIDName = "CloudFront-Key-Pair-Id"
 )
 
-// A CookieOptions optional additonal options that can be applied to the signed
+// A CookieOptions optional additional options that can be applied to the signed
 // cookies.
 type CookieOptions struct {
 	Path   string

vendor/github.com/aws/aws-sdk-go/service/s3/host_style_bucket.go

@@ -67,6 +67,10 @@ func updateEndpointForHostStyle(r *request.Request) {
 	moveBucketToHost(r.HTTPRequest.URL, bucket)
 }
 
+var (
+	accelElem = []byte("s3-accelerate.dualstack.")
+)
+
 func updateEndpointForAccelerate(r *request.Request) {
 	bucket, ok := bucketNameFromReqParams(r.Params)
 	if !ok {
@@ -78,13 +82,31 @@ func updateEndpointForAccelerate(r *request.Request) {
 
 	if !hostCompatibleBucketName(r.HTTPRequest.URL, bucket) {
 		r.Error = awserr.New("InvalidParameterException",
-			fmt.Sprintf("bucket name %s is not compatibile with S3 Accelerate", bucket),
+			fmt.Sprintf("bucket name %s is not compatible with S3 Accelerate", bucket),
 			nil)
 		return
 	}
 
-	// Change endpoint from s3(-[a-z0-1-])?.amazonaws.com to s3-accelerate.amazonaws.com
+	parts := strings.Split(r.HTTPRequest.URL.Host, ".")
-	r.HTTPRequest.URL.Host = replaceHostRegion(r.HTTPRequest.URL.Host, "accelerate")
+	if len(parts) < 3 {
+		r.Error = awserr.New("InvalidParameterExecption",
+			fmt.Sprintf("unable to update endpoint host for S3 accelerate, hostname invalid, %s",
+				r.HTTPRequest.URL.Host), nil)
+		return
+	}
+
+	if parts[0] == "s3" || strings.HasPrefix(parts[0], "s3-") {
+		parts[0] = "s3-accelerate"
+	}
+	for i := 1; i+1 < len(parts); i++ {
+		if parts[i] == aws.StringValue(r.Config.Region) {
+			parts = append(parts[:i], parts[i+1:]...)
+			break
+		}
+	}
+
+	r.HTTPRequest.URL.Host = strings.Join(parts, ".")
+
 	moveBucketToHost(r.HTTPRequest.URL, bucket)
 }
 
@@ -138,28 +160,3 @@ func moveBucketToHost(u *url.URL, bucket string) {
 		u.Path = "/"
 	}
 }
-
-const s3HostPrefix = "s3"
-
-// replaceHostRegion replaces the S3 region string in the host with the
-// value provided. If v is empty the host prefix returned will be s3.
-func replaceHostRegion(host, v string) string {
-	if !strings.HasPrefix(host, s3HostPrefix) {
-		return host
-	}
-
-	suffix := host[len(s3HostPrefix):]
-	for i := len(s3HostPrefix); i < len(host); i++ {
-		if host[i] == '.' {
-			// Trim until '.' leave the it in place.
-			suffix = host[i:]
-			break
-		}
-	}
-
-	if len(v) == 0 {
-		return fmt.Sprintf("s3%s", suffix)
-	}
-
-	return fmt.Sprintf("s3-%s%s", v, suffix)
-}

vendor/github.com/aws/aws-sdk-go/service/s3/service.go

@@ -12,8 +12,9 @@ import (
 )
 
 // S3 is a client for Amazon S3.
-//The service client's operations are safe to be used concurrently.
+// The service client's operations are safe to be used concurrently.
 // It is not safe to mutate any of the client's properties though.
+// Please also see https://docs.aws.amazon.com/goto/WebAPI/s3-2006-03-01
 type S3 struct {
 	*client.Client
 }
@@ -24,8 +25,11 @@ var initClient func(*client.Client)
 // Used for custom request initialization logic
 var initRequest func(*request.Request)
 
-// A ServiceName is the name of the service the client will make API calls to.
+// Service information constants
-const ServiceName = "s3"
+const (
+	ServiceName = "s3"        // Service endpoint prefix API calls made to.
+	EndpointsID = ServiceName // Service ID for Regions and Endpoints metadata.
+)
 
 // New creates a new instance of the S3 client with a session.
 // If additional configuration is needed for the client instance use the optional
@@ -38,17 +42,18 @@ const ServiceName = "s3"
 //     // Create a S3 client with additional configuration
 //     svc := s3.New(mySession, aws.NewConfig().WithRegion("us-west-2"))
 func New(p client.ConfigProvider, cfgs ...*aws.Config) *S3 {
-	c := p.ClientConfig(ServiceName, cfgs...)
+	c := p.ClientConfig(EndpointsID, cfgs...)
-	return newClient(*c.Config, c.Handlers, c.Endpoint, c.SigningRegion)
+	return newClient(*c.Config, c.Handlers, c.Endpoint, c.SigningRegion, c.SigningName)
 }
 
 // newClient creates, initializes and returns a new service client instance.
-func newClient(cfg aws.Config, handlers request.Handlers, endpoint, signingRegion string) *S3 {
+func newClient(cfg aws.Config, handlers request.Handlers, endpoint, signingRegion, signingName string) *S3 {
 	svc := &S3{
 		Client: client.New(
 			cfg,
 			metadata.ClientInfo{
 				ServiceName:   ServiceName,
+				SigningName:   signingName,
 				SigningRegion: signingRegion,
 				Endpoint:      endpoint,
 				APIVersion:    "2006-03-01",

vendor/github.com/aws/aws-sdk-go/service/s3/statusok_error.go

@@ -5,7 +5,6 @@ import (
 	"io/ioutil"
 	"net/http"
 
-	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/awserr"
 	"github.com/aws/aws-sdk-go/aws/request"
 )
@@ -17,8 +16,8 @@ func copyMultipartStatusOKUnmarhsalError(r *request.Request) {
 		return
 	}
 	body := bytes.NewReader(b)
-	r.HTTPResponse.Body = aws.ReadSeekCloser(body)
+	r.HTTPResponse.Body = ioutil.NopCloser(body)
-	defer r.HTTPResponse.Body.(aws.ReaderSeekerCloser).Seek(0, 0)
+	defer body.Seek(0, 0)
 
 	if body.Len() == 0 {
 		// If there is no body don't attempt to parse the body.

vendor/github.com/aws/aws-sdk-go/service/s3/unmarshal_error.go

@@ -23,6 +23,8 @@ func unmarshalError(r *request.Request) {
 	defer r.HTTPResponse.Body.Close()
 	defer io.Copy(ioutil.Discard, r.HTTPResponse.Body)
 
+	// Bucket exists in a different region, and request needs
+	// to be made to the correct region.
 	if r.HTTPResponse.StatusCode == http.StatusMovedPermanently {
 		r.Error = awserr.NewRequestFailure(
 			awserr.New("BucketRegionError",
@@ -35,25 +37,29 @@ func unmarshalError(r *request.Request) {
 		return
 	}
 
-	if r.HTTPResponse.ContentLength == 0 {
+	var errCode, errMsg string
-		// No body, use status code to generate an awserr.Error
-		r.Error = awserr.NewRequestFailure(
-			awserr.New(strings.Replace(r.HTTPResponse.Status, " ", "", -1), r.HTTPResponse.Status, nil),
-			r.HTTPResponse.StatusCode,
-			r.RequestID,
-		)
-		return
-	}
 
+	// Attempt to parse error from body if it is known
 	resp := &xmlErrorResponse{}
 	err := xml.NewDecoder(r.HTTPResponse.Body).Decode(resp)
 	if err != nil && err != io.EOF {
-		r.Error = awserr.New("SerializationError", "failed to decode S3 XML error response", nil)
+		errCode = "SerializationError"
+		errMsg = "failed to decode S3 XML error response"
 	} else {
+		errCode = resp.Code
+		errMsg = resp.Message
+	}
+
+	// Fallback to status code converted to message if still no error code
+	if len(errCode) == 0 {
+		statusText := http.StatusText(r.HTTPResponse.StatusCode)
+		errCode = strings.Replace(statusText, " ", "", -1)
+		errMsg = statusText
+	}
+
 	r.Error = awserr.NewRequestFailure(
-			awserr.New(resp.Code, resp.Message, nil),
+		awserr.New(errCode, errMsg, nil),
 		r.HTTPResponse.StatusCode,
 		r.RequestID,
 	)
-	}
 }

vendor/github.com/aws/aws-sdk-go/service/s3/waiters.go

@@ -6,6 +6,10 @@ import (
 	"github.com/aws/aws-sdk-go/private/waiter"
 )
 
+// WaitUntilBucketExists uses the Amazon S3 API operation
+// HeadBucket to wait for a condition to be met before returning.
+// If the condition is not meet within the max attempt window an error will
+// be returned.
 func (c *S3) WaitUntilBucketExists(input *HeadBucketInput) error {
 	waiterCfg := waiter.Config{
 		Operation:   "HeadBucket",
@@ -47,6 +51,10 @@ func (c *S3) WaitUntilBucketExists(input *HeadBucketInput) error {
 	return w.Wait()
 }
 
+// WaitUntilBucketNotExists uses the Amazon S3 API operation
+// HeadBucket to wait for a condition to be met before returning.
+// If the condition is not meet within the max attempt window an error will
+// be returned.
 func (c *S3) WaitUntilBucketNotExists(input *HeadBucketInput) error {
 	waiterCfg := waiter.Config{
 		Operation:   "HeadBucket",
@@ -70,6 +78,10 @@ func (c *S3) WaitUntilBucketNotExists(input *HeadBucketInput) error {
 	return w.Wait()
 }
 
+// WaitUntilObjectExists uses the Amazon S3 API operation
+// HeadObject to wait for a condition to be met before returning.
+// If the condition is not meet within the max attempt window an error will
+// be returned.
 func (c *S3) WaitUntilObjectExists(input *HeadObjectInput) error {
 	waiterCfg := waiter.Config{
 		Operation:   "HeadObject",
@@ -99,6 +111,10 @@ func (c *S3) WaitUntilObjectExists(input *HeadObjectInput) error {
 	return w.Wait()
 }
 
+// WaitUntilObjectNotExists uses the Amazon S3 API operation
+// HeadObject to wait for a condition to be met before returning.
+// If the condition is not meet within the max attempt window an error will
+// be returned.
 func (c *S3) WaitUntilObjectNotExists(input *HeadObjectInput) error {
 	waiterCfg := waiter.Config{
 		Operation:   "HeadObject",

vendor/github.com/aws/aws-sdk-go/service/sts/customizations.go

@@ -0,0 +1,12 @@
+package sts
+
+import "github.com/aws/aws-sdk-go/aws/request"
+
+func init() {
+	initRequest = func(r *request.Request) {
+		switch r.Operation.Name {
+		case opAssumeRoleWithSAML, opAssumeRoleWithWebIdentity:
+			r.Handlers.Sign.Clear() // these operations are unsigned
+		}
+	}
+}

vendor/github.com/aws/aws-sdk-go/service/sts/service.go

@@ -0,0 +1,135 @@
+// THIS FILE IS AUTOMATICALLY GENERATED. DO NOT EDIT.
+
+package sts
+
+import (
+	"github.com/aws/aws-sdk-go/aws"
+	"github.com/aws/aws-sdk-go/aws/client"
+	"github.com/aws/aws-sdk-go/aws/client/metadata"
+	"github.com/aws/aws-sdk-go/aws/request"
+	"github.com/aws/aws-sdk-go/aws/signer/v4"
+	"github.com/aws/aws-sdk-go/private/protocol/query"
+)
+
+// The AWS Security Token Service (STS) is a web service that enables you to
+// request temporary, limited-privilege credentials for AWS Identity and Access
+// Management (IAM) users or for users that you authenticate (federated users).
+// This guide provides descriptions of the STS API. For more detailed information
+// about using this service, go to Temporary Security Credentials (http://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp.html).
+//
+// As an alternative to using the API, you can use one of the AWS SDKs, which
+// consist of libraries and sample code for various programming languages and
+// platforms (Java, Ruby, .NET, iOS, Android, etc.). The SDKs provide a convenient
+// way to create programmatic access to STS. For example, the SDKs take care
+// of cryptographically signing requests, managing errors, and retrying requests
+// automatically. For information about the AWS SDKs, including how to download
+// and install them, see the Tools for Amazon Web Services page (http://aws.amazon.com/tools/).
+//
+// For information about setting up signatures and authorization through the
+// API, go to Signing AWS API Requests (http://docs.aws.amazon.com/general/latest/gr/signing_aws_api_requests.html)
+// in the AWS General Reference. For general information about the Query API,
+// go to Making Query Requests (http://docs.aws.amazon.com/IAM/latest/UserGuide/IAM_UsingQueryAPI.html)
+// in Using IAM. For information about using security tokens with other AWS
+// products, go to AWS Services That Work with IAM (http://docs.aws.amazon.com/IAM/latest/UserGuide/reference_aws-services-that-work-with-iam.html)
+// in the IAM User Guide.
+//
+// If you're new to AWS and need additional technical information about a specific
+// AWS product, you can find the product's technical documentation at http://aws.amazon.com/documentation/
+// (http://aws.amazon.com/documentation/).
+//
+// Endpoints
+//
+// The AWS Security Token Service (STS) has a default endpoint of https://sts.amazonaws.com
+// that maps to the US East (N. Virginia) region. Additional regions are available
+// and are activated by default. For more information, see Activating and Deactivating
+// AWS STS in an AWS Region (http://docs.aws.amazon.com/IAM/latest/UserGuide/id_credentials_temp_enable-regions.html)
+// in the IAM User Guide.
+//
+// For information about STS endpoints, see Regions and Endpoints (http://docs.aws.amazon.com/general/latest/gr/rande.html#sts_region)
+// in the AWS General Reference.
+//
+// Recording API requests
+//
+// STS supports AWS CloudTrail, which is a service that records AWS calls for
+// your AWS account and delivers log files to an Amazon S3 bucket. By using
+// information collected by CloudTrail, you can determine what requests were
+// successfully made to STS, who made the request, when it was made, and so
+// on. To learn more about CloudTrail, including how to turn it on and find
+// your log files, see the AWS CloudTrail User Guide (http://docs.aws.amazon.com/awscloudtrail/latest/userguide/what_is_cloud_trail_top_level.html).
+// The service client's operations are safe to be used concurrently.
+// It is not safe to mutate any of the client's properties though.
+// Please also see https://docs.aws.amazon.com/goto/WebAPI/sts-2011-06-15
+type STS struct {
+	*client.Client
+}
+
+// Used for custom client initialization logic
+var initClient func(*client.Client)
+
+// Used for custom request initialization logic
+var initRequest func(*request.Request)
+
+// Service information constants
+const (
+	ServiceName = "sts"       // Service endpoint prefix API calls made to.
+	EndpointsID = ServiceName // Service ID for Regions and Endpoints metadata.
+)
+
+// New creates a new instance of the STS client with a session.
+// If additional configuration is needed for the client instance use the optional
+// aws.Config parameter to add your extra config.
+//
+// Example:
+//     // Create a STS client from just a session.
+//     svc := sts.New(mySession)
+//
+//     // Create a STS client with additional configuration
+//     svc := sts.New(mySession, aws.NewConfig().WithRegion("us-west-2"))
+func New(p client.ConfigProvider, cfgs ...*aws.Config) *STS {
+	c := p.ClientConfig(EndpointsID, cfgs...)
+	return newClient(*c.Config, c.Handlers, c.Endpoint, c.SigningRegion, c.SigningName)
+}
+
+// newClient creates, initializes and returns a new service client instance.
+func newClient(cfg aws.Config, handlers request.Handlers, endpoint, signingRegion, signingName string) *STS {
+	svc := &STS{
+		Client: client.New(
+			cfg,
+			metadata.ClientInfo{
+				ServiceName:   ServiceName,
+				SigningName:   signingName,
+				SigningRegion: signingRegion,
+				Endpoint:      endpoint,
+				APIVersion:    "2011-06-15",
+			},
+			handlers,
+		),
+	}
+
+	// Handlers
+	svc.Handlers.Sign.PushBackNamed(v4.SignRequestHandler)
+	svc.Handlers.Build.PushBackNamed(query.BuildHandler)
+	svc.Handlers.Unmarshal.PushBackNamed(query.UnmarshalHandler)
+	svc.Handlers.UnmarshalMeta.PushBackNamed(query.UnmarshalMetaHandler)
+	svc.Handlers.UnmarshalError.PushBackNamed(query.UnmarshalErrorHandler)
+
+	// Run custom client initialization if present
+	if initClient != nil {
+		initClient(svc.Client)
+	}
+
+	return svc
+}
+
+// newRequest creates a new request for a STS operation and runs any
+// custom request initialization.
+func (c *STS) newRequest(op *request.Operation, params, data interface{}) *request.Request {
+	req := c.NewRequest(op, params, data)
+
+	// Run custom request initialization if present
+	if initRequest != nil {
+		initRequest(req)
+	}
+
+	return req
+}