Merge pull request #3118 from lawliet89/bump-aws-sdk

Bump AWS SDK to v1.34.9

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/Azure/azure-sdk-for-go v16.2.1+incompatible
 	github.com/Azure/go-autorest v10.8.1+incompatible // indirect
 	github.com/Shopify/logrus-bugsnag v0.0.0-20171204204709-577dee27f20d
-	github.com/aws/aws-sdk-go v1.15.11
+	github.com/aws/aws-sdk-go v1.34.9
 	github.com/bitly/go-simplejson v0.5.0 // indirect
 	github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 // indirect
 	github.com/bshuster-repo/logrus-logstash-hook v0.4.1
@@ -23,7 +23,6 @@ require (
 	github.com/gorilla/handlers v0.0.0-20150720190736-60c7bfde3e33
 	github.com/gorilla/mux v1.7.2
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
-	github.com/jmespath/go-jmespath v0.0.0-20160803190731-bd40a432e4c7 // indirect
 	github.com/kr/pretty v0.1.0 // indirect
 	github.com/marstr/guid v1.1.0 // indirect
 	github.com/mitchellh/mapstructure v1.1.2
@@ -33,14 +32,12 @@ require (
 	github.com/opencontainers/image-spec v1.0.1
 	github.com/satori/go.uuid v1.2.0 // indirect
 	github.com/sirupsen/logrus v1.4.2
-	github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a // indirect
 	github.com/spf13/cobra v0.0.3
 	github.com/spf13/pflag v1.0.3 // indirect
 	github.com/yvasiyarov/go-metrics v0.0.0-20140926110328-57bccd1ccd43 // indirect
 	github.com/yvasiyarov/gorelic v0.0.0-20141212073537-a9bba5b9ab50
 	github.com/yvasiyarov/newrelic_platform_go v0.0.0-20140908184405-b21fdbd4370f // indirect
 	golang.org/x/crypto v0.0.0-20200128174031-69ecbb4d6d5d
-	golang.org/x/net v0.0.0-20190619014844-b5b0513f8c1b // indirect
 	golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45
 	google.golang.org/api v0.0.0-20160322025152-9bf6e6e569ff
 	google.golang.org/cloud v0.0.0-20151119220103-975617b05ea8

go.sum

@@ -8,8 +8,8 @@ github.com/Shopify/logrus-bugsnag v0.0.0-20171204204709-577dee27f20d h1:UrqY+r/O
 github.com/Shopify/logrus-bugsnag v0.0.0-20171204204709-577dee27f20d/go.mod h1:HI8ITrYtUY+O+ZhtlqUnD8+KwNPOyugEhfP9fdUIaEQ=
 github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
 github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/aws/aws-sdk-go v1.15.11 h1:m45+Ru/wA+73cOZXiEGLDH2d9uLN3iHqMc0/z4noDXE=
+github.com/aws/aws-sdk-go v1.34.9 h1:cUGBW9CVdi0mS7K1hDzxIqTpfeWhpoQiguq81M1tjK0=
-github.com/aws/aws-sdk-go v1.15.11/go.mod h1:mFuSZ37Z9YOHbQEwBWztmVzqXrEkub65tZoCYDt7FT0=
+github.com/aws/aws-sdk-go v1.34.9/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
 github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
 github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
@@ -43,11 +43,10 @@ github.com/docker/libtrust v0.0.0-20150114040149-fa567046d9b1 h1:ZClxb8laGDf5arX
 github.com/docker/libtrust v0.0.0-20150114040149-fa567046d9b1/go.mod h1:cyGadeNEkKy96OOhEzfZl+yxihPEzKnqJwvfuSUqbZE=
 github.com/garyburd/redigo v0.0.0-20150301180006-535138d7bcd7 h1:LofdAjjjqCSXMwLGgOgnE+rdPuvX9DxCqaHwKy7i/ko=
 github.com/garyburd/redigo v0.0.0-20150301180006-535138d7bcd7/go.mod h1:NR3MbYisc3/PwhQ00EMzDiPmrwpPxAn5GI05/YaO1SY=
-github.com/go-ini/ini v1.25.4 h1:Mujh4R/dH6YL8bxuISne3xX2+qcQ9p0IxKAP6ExWoUo=
-github.com/go-ini/ini v1.25.4/go.mod h1:ByCAeIL28uOIIG0E3PJtZPDL8WnHpFKFOtgjp+3Ies8=
 github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
 github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
 github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
+github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
 github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
@@ -56,21 +55,16 @@ github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
-github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1 h1:EGx4pi6eqNxGaHF6qqu48+N2wcFQ5qg5FXgOdqsJ5d8=
-github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
 github.com/gorilla/handlers v0.0.0-20150720190736-60c7bfde3e33 h1:893HsJqtxp9z1SF76gg6hY70hRY1wVlTSnC/h1yUDCo=
 github.com/gorilla/handlers v0.0.0-20150720190736-60c7bfde3e33/go.mod h1:Qkdc/uu4tH4g6mTK6auzZ766c4CA0Ng8+o/OAirnOIQ=
 github.com/gorilla/mux v1.7.2 h1:zoNxOV7WjqXptQOVngLmcSQgXmgk4NMz1HibBchjl/I=
 github.com/gorilla/mux v1.7.2/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs=
 github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
 github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
-github.com/jmespath/go-jmespath v0.0.0-20160202185014-0b12d6b521d8/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
+github.com/jmespath/go-jmespath v0.3.0 h1:OS12ieG61fsCg5+qLJ+SsW9NicxNkg3b25OyT2yCeUc=
-github.com/jmespath/go-jmespath v0.0.0-20160803190731-bd40a432e4c7 h1:SMvOWPJCES2GdFracYbBQh93GXac8fq7HeN6JnpduB8=
+github.com/jmespath/go-jmespath v0.3.0/go.mod h1:9QtRXoHjLGCJ5IBSaohpXITPlowMeeYCZ7fLUTSywik=
-github.com/jmespath/go-jmespath v0.0.0-20160803190731-bd40a432e4c7/go.mod h1:Nht3zPeWKUH0NzdCt2Blrr5ys8VGpn0CEB0cQHVjt7k=
 github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
 github.com/json-iterator/go v1.1.7/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
-github.com/jtolds/gls v4.20.0+incompatible h1:xdiiI2gbIgH/gLH7ADydsJ1uDOEzR8yvV7C0MuV77Wo=
-github.com/jtolds/gls v4.20.0+incompatible/go.mod h1:QJZ7F/aHp+rZTRtaJ1ow/lLfFfVYBRgL+9YlvaHOwJU=
 github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1 h1:mweAR1A6xJ3oS2pRaGiHgQ4OO8tzTaLawm8vnODuwDk=
 github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
@@ -100,6 +94,7 @@ github.com/opencontainers/go-digest v1.0.0-rc1/go.mod h1:cMLVZDEM3+U2I4VmLI6N8jQ
 github.com/opencontainers/image-spec v1.0.1 h1:JMemWkRwHx4Zj+fVxWoMCFm/8sYGGrUVojFA6h/TRcI=
 github.com/opencontainers/image-spec v1.0.1/go.mod h1:BtxoFyWECRxE4U/7sNtV5W15zMzWCbyJoFRP3s7yZA0=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
@@ -121,10 +116,6 @@ github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdh
 github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
 github.com/sirupsen/logrus v1.4.2 h1:SPIRibHv4MatM3XXNO2BJeFLZwZ2LvZgfQ5+UNI2im4=
 github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
-github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d h1:zE9ykElWQ6/NYmHa3jpm/yHnI4xSofP+UP6SpjHcSeM=
-github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
-github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a h1:pa8hGb/2YqsZKovtsgrwcDH1RZhVbTKCjLp47XpqCDs=
-github.com/smartystreets/goconvey v0.0.0-20190330032615-68dc04aab96a/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/spf13/cobra v0.0.3 h1:ZlrZ4XsMRm04Fr5pSFxBgfND2EBVa1nLpiy1stUsX/8=
 github.com/spf13/cobra v0.0.3/go.mod h1:1l0Ry5zgKvJasoi3XT1TypsSe7PqH0Sj9dhYf7v3XqQ=
 github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
@@ -134,6 +125,8 @@ github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.5.1 h1:nOGnQDM7FYENwehXlg/kFVnos3rEvtKTjRvOWSzb6H4=
+github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
 github.com/yvasiyarov/go-metrics v0.0.0-20140926110328-57bccd1ccd43 h1:+lm10QQTNSBd8DVTNGHx7o/IKu9HYDvLMffDhbyLccI=
 github.com/yvasiyarov/go-metrics v0.0.0-20140926110328-57bccd1ccd43/go.mod h1:aX5oPXxHm3bOH+xeAttToC8pqch2ScQN/JoXYupl6xs=
 github.com/yvasiyarov/gorelic v0.0.0-20141212073537-a9bba5b9ab50 h1:hlE8//ciYMztlGpl/VA+Zm1AcTPHYkHJPbHqE6WJUXE=
@@ -147,11 +140,10 @@ golang.org/x/crypto v0.0.0-20200128174031-69ecbb4d6d5d/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
 golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20190619014844-b5b0513f8c1b h1:lkjdUzSyJ5P1+eal9fxXX9Xg2BTfswsonKUse48C0uE=
+golang.org/x/net v0.0.0-20200202094626-16171245cfb2 h1:CCH4IOTTfewWjGOlSp+zGcjutRKlBEZQ6wTn8ozI/nI=
-golang.org/x/net v0.0.0-20190619014844-b5b0513f8c1b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45 h1:SVwTIAaPC2U/AvvLNZ2a7OVsmBpC8L5BlwK1whH3hm0=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
@@ -165,7 +157,6 @@ golang.org/x/sys v0.0.0-20190801041406-cbf593c0f2f3 h1:4y9KwBHBgBNwDbtu44R5o1fdO
 golang.org/x/sys v0.0.0-20190801041406-cbf593c0f2f3/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
 google.golang.org/api v0.0.0-20160322025152-9bf6e6e569ff h1:mk5zS3XLqVUzdF/CQCZ5ERujSF/8JFo+Wpkp/5I93NA=
 google.golang.org/api v0.0.0-20160322025152-9bf6e6e569ff/go.mod h1:4mhQ8q/RsB7i+udVvVy5NUi08OU8ZlA0gRVgrF7VFY0=
 google.golang.org/appengine v1.4.0 h1:/wp5JvzpHIxhs/dumFmF7BXTf3Z+dd4uXta4kVyO508=

vendor/github.com/aws/aws-sdk-go/NOTICE.txt

@@ -1,3 +1,3 @@
 AWS SDK for Go
-Copyright 2015 Amazon.com, Inc. or its affiliates. All Rights Reserved. 
+Copyright 2015 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 Copyright 2014-2015 Stripe, Inc.

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

@@ -0,0 +1,93 @@
+// Package arn provides a parser for interacting with Amazon Resource Names.
+package arn
+
+import (
+	"errors"
+	"strings"
+)
+
+const (
+	arnDelimiter = ":"
+	arnSections  = 6
+	arnPrefix    = "arn:"
+
+	// zero-indexed
+	sectionPartition = 1
+	sectionService   = 2
+	sectionRegion    = 3
+	sectionAccountID = 4
+	sectionResource  = 5
+
+	// errors
+	invalidPrefix   = "arn: invalid prefix"
+	invalidSections = "arn: not enough sections"
+)
+
+// ARN captures the individual fields of an Amazon Resource Name.
+// See http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html for more information.
+type ARN struct {
+	// The partition that the resource is in. For standard AWS regions, the partition is "aws". If you have resources in
+	// other partitions, the partition is "aws-partitionname". For example, the partition for resources in the China
+	// (Beijing) region is "aws-cn".
+	Partition string
+
+	// The service namespace that identifies the AWS product (for example, Amazon S3, IAM, or Amazon RDS). For a list of
+	// namespaces, see
+	// http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#genref-aws-service-namespaces.
+	Service string
+
+	// The region the resource resides in. Note that the ARNs for some resources do not require a region, so this
+	// component might be omitted.
+	Region string
+
+	// The ID of the AWS account that owns the resource, without the hyphens. For example, 123456789012. Note that the
+	// ARNs for some resources don't require an account number, so this component might be omitted.
+	AccountID string
+
+	// The content of this part of the ARN varies by service. It often includes an indicator of the type of resource —
+	// for example, an IAM user or Amazon RDS database - followed by a slash (/) or a colon (:), followed by the
+	// resource name itself. Some services allows paths for resource names, as described in
+	// http://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html#arns-paths.
+	Resource string
+}
+
+// Parse parses an ARN into its constituent parts.
+//
+// Some example ARNs:
+// arn:aws:elasticbeanstalk:us-east-1:123456789012:environment/My App/MyEnvironment
+// arn:aws:iam::123456789012:user/David
+// arn:aws:rds:eu-west-1:123456789012:db:mysql-db
+// arn:aws:s3:::my_corporate_bucket/exampleobject.png
+func Parse(arn string) (ARN, error) {
+	if !strings.HasPrefix(arn, arnPrefix) {
+		return ARN{}, errors.New(invalidPrefix)
+	}
+	sections := strings.SplitN(arn, arnDelimiter, arnSections)
+	if len(sections) != arnSections {
+		return ARN{}, errors.New(invalidSections)
+	}
+	return ARN{
+		Partition: sections[sectionPartition],
+		Service:   sections[sectionService],
+		Region:    sections[sectionRegion],
+		AccountID: sections[sectionAccountID],
+		Resource:  sections[sectionResource],
+	}, nil
+}
+
+// IsARN returns whether the given string is an ARN by looking for
+// whether the string starts with "arn:" and contains the correct number
+// of sections delimited by colons(:).
+func IsARN(arn string) bool {
+	return strings.HasPrefix(arn, arnPrefix) && strings.Count(arn, ":") >= arnSections-1
+}
+
+// String returns the canonical representation of the ARN
+func (arn ARN) String() string {
+	return arnPrefix +
+		arn.Partition + arnDelimiter +
+		arn.Service + arnDelimiter +
+		arn.Region + arnDelimiter +
+		arn.AccountID + arnDelimiter +
+		arn.Resource
+}

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

@@ -138,8 +138,27 @@ type RequestFailure interface {
 	RequestID() string
 }
 
-// NewRequestFailure returns a new request error wrapper for the given Error
+// NewRequestFailure returns a wrapped error with additional information for
-// provided.
+// request status code, and service requestID.
+//
+// Should be used to wrap all request which involve service requests. Even if
+// the request failed without a service response, but had an HTTP status code
+// that may be meaningful.
 func NewRequestFailure(err Error, statusCode int, reqID string) RequestFailure {
 	return newRequestError(err, statusCode, reqID)
 }
+
+// UnmarshalError provides the interface for the SDK failing to unmarshal data.
+type UnmarshalError interface {
+	awsError
+	Bytes() []byte
+}
+
+// NewUnmarshalError returns an initialized UnmarshalError error wrapper adding
+// the bytes that fail to unmarshal to the error.
+func NewUnmarshalError(err error, msg string, bytes []byte) UnmarshalError {
+	return &unmarshalError{
+		awsError: New("UnmarshalError", msg, err),
+		bytes:    bytes,
+	}
+}

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

@@ -1,6 +1,9 @@
 package awserr
 
-import "fmt"
+import (
+	"encoding/hex"
+	"fmt"
+)
 
 // SprintError returns a string of the formatted error code.
 //
@@ -119,6 +122,7 @@ type requestError struct {
 	awsError
 	statusCode int
 	requestID  string
+	bytes      []byte
 }
 
 // newRequestError returns a wrapped error with additional information for
@@ -170,6 +174,29 @@ func (r requestError) OrigErrs() []error {
 	return []error{r.OrigErr()}
 }
 
+type unmarshalError struct {
+	awsError
+	bytes []byte
+}
+
+// Error returns the string representation of the error.
+// Satisfies the error interface.
+func (e unmarshalError) Error() string {
+	extra := hex.Dump(e.bytes)
+	return SprintError(e.Code(), e.Message(), extra, e.OrigErr())
+}
+
+// String returns the string representation of the error.
+// Alias for Error to satisfy the stringer interface.
+func (e unmarshalError) String() string {
+	return e.Error()
+}
+
+// Bytes returns the bytes that failed to unmarshal.
+func (e unmarshalError) Bytes() []byte {
+	return e.bytes
+}
+
 // An error list that satisfies the golang interface
 type errorList []error
 
@@ -181,7 +208,7 @@ func (e errorList) Error() string {
 	// How do we want to handle the array size being zero
 	if size := len(e); size > 0 {
 		for i := 0; i < size; i++ {
-			msg += fmt.Sprintf("%s", e[i].Error())
+			msg += e[i].Error()
 			// We check the next index to see if it is within the slice.
 			// If it is, then we append a newline. We do this, because unit tests
 			// could be broken with the additional '\n'

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

@@ -15,7 +15,7 @@ func DeepEqual(a, b interface{}) bool {
 	rb := reflect.Indirect(reflect.ValueOf(b))
 
 	if raValid, rbValid := ra.IsValid(), rb.IsValid(); !raValid && !rbValid {
-		// If the elements are both nil, and of the same type the are equal
+		// If the elements are both nil, and of the same type they are equal
 		// If they are of different types they are not equal
 		return reflect.TypeOf(a) == reflect.TypeOf(b)
 	} else if raValid != rbValid {

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

@@ -70,7 +70,7 @@ func rValuesAtPath(v interface{}, path string, createPath, caseSensitive, nilTer
 			value = value.FieldByNameFunc(func(name string) bool {
 				if c == name {
 					return true
-				} else if !caseSensitive && strings.ToLower(name) == strings.ToLower(c) {
+				} else if !caseSensitive && strings.EqualFold(name, c) {
 					return true
 				}
 				return false
@@ -185,13 +185,12 @@ func ValuesAtPath(i interface{}, path string) ([]interface{}, error) {
 // SetValueAtPath sets a value at the case insensitive lexical path inside
 // of a structure.
 func SetValueAtPath(i interface{}, path string, v interface{}) {
-	if rvals := rValuesAtPath(i, path, true, false, v == nil); rvals != nil {
+	rvals := rValuesAtPath(i, path, true, false, v == nil)
-		for _, rval := range rvals {
+	for _, rval := range rvals {
-			if rval.Kind() == reflect.Ptr && rval.IsNil() {
+		if rval.Kind() == reflect.Ptr && rval.IsNil() {
-				continue
+			continue
-			}
-			setValue(rval, v)
 		}
+		setValue(rval, v)
 	}
 }
 

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

@@ -23,28 +23,27 @@ func stringValue(v reflect.Value, indent int, buf *bytes.Buffer) {
 	case reflect.Struct:
 		buf.WriteString("{\n")
 
-		names := []string{}
 		for i := 0; i < v.Type().NumField(); i++ {
-			name := v.Type().Field(i).Name
+			ft := v.Type().Field(i)
-			f := v.Field(i)
+			fv := v.Field(i)
-			if name[0:1] == strings.ToLower(name[0:1]) {
+
+			if ft.Name[0:1] == strings.ToLower(ft.Name[0:1]) {
 				continue // ignore unexported fields
 			}
-			if (f.Kind() == reflect.Ptr || f.Kind() == reflect.Slice) && f.IsNil() {
+			if (fv.Kind() == reflect.Ptr || fv.Kind() == reflect.Slice) && fv.IsNil() {
 				continue // ignore unset fields
 			}
-			names = append(names, name)
-		}
 
-		for i, n := range names {
-			val := v.FieldByName(n)
 			buf.WriteString(strings.Repeat(" ", indent+2))
-			buf.WriteString(n + ": ")
+			buf.WriteString(ft.Name + ": ")
-			stringValue(val, indent+2, buf)
 
-			if i < len(names)-1 {
+			if tag := ft.Tag.Get("sensitive"); tag == "true" {
-				buf.WriteString(",\n")
+				buf.WriteString("<sensitive>")
+			} else {
+				stringValue(fv, indent+2, buf)
 			}
+
+			buf.WriteString(",\n")
 		}
 
 		buf.WriteString("\n" + strings.Repeat(" ", indent) + "}")

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

@@ -12,13 +12,14 @@ import (
 type Config struct {
 	Config        *aws.Config
 	Handlers      request.Handlers
+	PartitionID   string
 	Endpoint      string
 	SigningRegion string
 	SigningName   string
 
 	// States that the signing name did not come from a modeled source but
 	// was derived based on other data. Used by service client constructors
-	// to determine if the signin name can be overriden based on metadata the
+	// to determine if the signin name can be overridden based on metadata the
 	// service has.
 	SigningNameDerived bool
 }
@@ -64,7 +65,7 @@ func New(cfg aws.Config, info metadata.ClientInfo, handlers request.Handlers, op
 	default:
 		maxRetries := aws.IntValue(cfg.MaxRetries)
 		if cfg.MaxRetries == nil || maxRetries == aws.UseServiceDefaultRetries {
-			maxRetries = 3
+			maxRetries = DefaultRetryerMaxNumRetries
 		}
 		svc.Retryer = DefaultRetryer{NumMaxRetries: maxRetries}
 	}

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

@@ -1,6 +1,7 @@
 package client
 
 import (
+	"math"
 	"strconv"
 	"time"
 
@@ -9,82 +10,142 @@ import (
 )
 
 // DefaultRetryer implements basic retry logic using exponential backoff for
-// most services. If you want to implement custom retry logic, implement the
+// most services. If you want to implement custom retry logic, you can implement the
-// request.Retryer interface or create a structure type that composes this
+// request.Retryer interface.
-// struct and override the specific methods. For example, to override only
-// the MaxRetries method:
 //
-//		type retryer struct {
-//      client.DefaultRetryer
-//    }
-//
-//    // This implementation always has 100 max retries
-//    func (d retryer) MaxRetries() int { return 100 }
 type DefaultRetryer struct {
+	// Num max Retries is the number of max retries that will be performed.
+	// By default, this is zero.
 	NumMaxRetries int
+
+	// MinRetryDelay is the minimum retry delay after which retry will be performed.
+	// If not set, the value is 0ns.
+	MinRetryDelay time.Duration
+
+	// MinThrottleRetryDelay is the minimum retry delay when throttled.
+	// If not set, the value is 0ns.
+	MinThrottleDelay time.Duration
+
+	// MaxRetryDelay is the maximum retry delay before which retry must be performed.
+	// If not set, the value is 0ns.
+	MaxRetryDelay time.Duration
+
+	// MaxThrottleDelay is the maximum retry delay when throttled.
+	// If not set, the value is 0ns.
+	MaxThrottleDelay time.Duration
 }
 
+const (
+	// DefaultRetryerMaxNumRetries sets maximum number of retries
+	DefaultRetryerMaxNumRetries = 3
+
+	// DefaultRetryerMinRetryDelay sets minimum retry delay
+	DefaultRetryerMinRetryDelay = 30 * time.Millisecond
+
+	// DefaultRetryerMinThrottleDelay sets minimum delay when throttled
+	DefaultRetryerMinThrottleDelay = 500 * time.Millisecond
+
+	// DefaultRetryerMaxRetryDelay sets maximum retry delay
+	DefaultRetryerMaxRetryDelay = 300 * time.Second
+
+	// DefaultRetryerMaxThrottleDelay sets maximum delay when throttled
+	DefaultRetryerMaxThrottleDelay = 300 * time.Second
+)
+
 // MaxRetries returns the number of maximum returns the service will use to make
 // an individual API request.
 func (d DefaultRetryer) MaxRetries() int {
 	return d.NumMaxRetries
 }
 
+// setRetryerDefaults sets the default values of the retryer if not set
+func (d *DefaultRetryer) setRetryerDefaults() {
+	if d.MinRetryDelay == 0 {
+		d.MinRetryDelay = DefaultRetryerMinRetryDelay
+	}
+	if d.MaxRetryDelay == 0 {
+		d.MaxRetryDelay = DefaultRetryerMaxRetryDelay
+	}
+	if d.MinThrottleDelay == 0 {
+		d.MinThrottleDelay = DefaultRetryerMinThrottleDelay
+	}
+	if d.MaxThrottleDelay == 0 {
+		d.MaxThrottleDelay = DefaultRetryerMaxThrottleDelay
+	}
+}
+
 // RetryRules returns the delay duration before retrying this request again
 func (d DefaultRetryer) RetryRules(r *request.Request) time.Duration {
-	// Set the upper limit of delay in retrying at ~five minutes
-	minTime := 30
-	throttle := d.shouldThrottle(r)
-	if throttle {
-		if delay, ok := getRetryDelay(r); ok {
-			return delay
-		}
 
-		minTime = 500
+	// if number of max retries is zero, no retries will be performed.
+	if d.NumMaxRetries == 0 {
+		return 0
+	}
+
+	// Sets default value for retryer members
+	d.setRetryerDefaults()
+
+	// minDelay is the minimum retryer delay
+	minDelay := d.MinRetryDelay
+
+	var initialDelay time.Duration
+
+	isThrottle := r.IsErrorThrottle()
+	if isThrottle {
+		if delay, ok := getRetryAfterDelay(r); ok {
+			initialDelay = delay
+		}
+		minDelay = d.MinThrottleDelay
 	}
 
 	retryCount := r.RetryCount
-	if throttle && retryCount > 8 {
+
-		retryCount = 8
+	// maxDelay the maximum retryer delay
-	} else if retryCount > 13 {
+	maxDelay := d.MaxRetryDelay
-		retryCount = 13
+
+	if isThrottle {
+		maxDelay = d.MaxThrottleDelay
 	}
 
-	delay := (1 << uint(retryCount)) * (sdkrand.SeededRand.Intn(minTime) + minTime)
+	var delay time.Duration
-	return time.Duration(delay) * time.Millisecond
+
+	// Logic to cap the retry count based on the minDelay provided
+	actualRetryCount := int(math.Log2(float64(minDelay))) + 1
+	if actualRetryCount < 63-retryCount {
+		delay = time.Duration(1<<uint64(retryCount)) * getJitterDelay(minDelay)
+		if delay > maxDelay {
+			delay = getJitterDelay(maxDelay / 2)
+		}
+	} else {
+		delay = getJitterDelay(maxDelay / 2)
+	}
+	return delay + initialDelay
+}
+
+// getJitterDelay returns a jittered delay for retry
+func getJitterDelay(duration time.Duration) time.Duration {
+	return time.Duration(sdkrand.SeededRand.Int63n(int64(duration)) + int64(duration))
 }
 
 // ShouldRetry returns true if the request should be retried.
 func (d DefaultRetryer) ShouldRetry(r *request.Request) bool {
+
+	// ShouldRetry returns false if number of max retries is 0.
+	if d.NumMaxRetries == 0 {
+		return false
+	}
+
 	// If one of the other handlers already set the retry state
 	// we don't want to override it based on the service's state
 	if r.Retryable != nil {
 		return *r.Retryable
 	}
-
+	return r.IsErrorRetryable() || r.IsErrorThrottle()
-	if r.HTTPResponse.StatusCode >= 500 && r.HTTPResponse.StatusCode != 501 {
-		return true
-	}
-	return r.IsErrorRetryable() || d.shouldThrottle(r)
-}
-
-// ShouldThrottle returns true if the request should be throttled.
-func (d DefaultRetryer) shouldThrottle(r *request.Request) bool {
-	switch r.HTTPResponse.StatusCode {
-	case 429:
-	case 502:
-	case 503:
-	case 504:
-	default:
-		return r.IsErrorThrottle()
-	}
-
-	return true
 }
 
 // This will look in the Retry-After header, RFC 7231, for how long
 // it will wait before attempting another request
-func getRetryDelay(r *request.Request) (time.Duration, bool) {
+func getRetryAfterDelay(r *request.Request) (time.Duration, bool) {
 	if !canUseRetryAfterHeader(r) {
 		return 0, false
 	}

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

@@ -67,10 +67,14 @@ func logRequest(r *request.Request) {
 		if !bodySeekable {
 			r.SetReaderBody(aws.ReadSeekCloser(r.HTTPRequest.Body))
 		}
-		// Reset the request body because dumpRequest will re-wrap the r.HTTPRequest's
+		// Reset the request body because dumpRequest will re-wrap the
-		// Body as a NoOpCloser and will not be reset after read by the HTTP
+		// r.HTTPRequest's Body as a NoOpCloser and will not be reset after
-		// client reader.
+		// read by the HTTP client reader.
-		r.ResetBody()
+		if err := r.Error; err != nil {
+			r.Config.Logger.Log(fmt.Sprintf(logReqErrMsg,
+				r.ClientInfo.ServiceName, r.Operation.Name, err))
+			return
+		}
 	}
 
 	r.Config.Logger.Log(fmt.Sprintf(logReqMsg,
@@ -118,6 +122,12 @@ var LogHTTPResponseHandler = request.NamedHandler{
 func logResponse(r *request.Request) {
 	lw := &logWriter{r.Config.Logger, bytes.NewBuffer(nil)}
 
+	if r.HTTPResponse == nil {
+		lw.Logger.Log(fmt.Sprintf(logRespErrMsg,
+			r.ClientInfo.ServiceName, r.Operation.Name, "request's HTTPResponse is nil"))
+		return
+	}
+
 	logBody := r.Config.LogLevel.Matches(aws.LogDebugWithHTTPBody)
 	if logBody {
 		r.HTTPResponse.Body = &teeReaderCloser{

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

@@ -5,6 +5,7 @@ type ClientInfo struct {
 	ServiceName   string
 	ServiceID     string
 	APIVersion    string
+	PartitionID   string
 	Endpoint      string
 	SigningName   string
 	SigningRegion string

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

@@ -0,0 +1,28 @@
+package client
+
+import (
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws/request"
+)
+
+// NoOpRetryer provides a retryer that performs no retries.
+// It should be used when we do not want retries to be performed.
+type NoOpRetryer struct{}
+
+// MaxRetries returns the number of maximum returns the service will use to make
+// an individual API; For NoOpRetryer the MaxRetries will always be zero.
+func (d NoOpRetryer) MaxRetries() int {
+	return 0
+}
+
+// ShouldRetry will always return false for NoOpRetryer, as it should never retry.
+func (d NoOpRetryer) ShouldRetry(_ *request.Request) bool {
+	return false
+}
+
+// RetryRules returns the delay duration before retrying this request again;
+// since NoOpRetryer does not retry, RetryRules always returns 0.
+func (d NoOpRetryer) RetryRules(_ *request.Request) time.Duration {
+	return 0
+}

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

@@ -18,9 +18,9 @@ const UseServiceDefaultRetries = -1
 type RequestRetryer interface{}
 
 // A Config provides service configuration for service clients. By default,
-// all clients will use the defaults.DefaultConfig tructure.
+// all clients will use the defaults.DefaultConfig structure.
 //
-//     // Create Session with MaxRetry configuration to be shared by multiple
+//     // Create Session with MaxRetries configuration to be shared by multiple
 //     // service clients.
 //     sess := session.Must(session.NewSession(&aws.Config{
 //         MaxRetries: aws.Int(3),
@@ -43,10 +43,10 @@ type Config struct {
 
 	// An optional endpoint URL (hostname only or fully qualified URI)
 	// that overrides the default generated endpoint for a client. Set this
-	// to `""` to use the default generated endpoint.
+	// to `nil` or the value to `""` to use the default generated endpoint.
 	//
-	// @note You must still provide a `Region` value when specifying an
+	// Note: You must still provide a `Region` value when specifying an
-	//   endpoint for a client.
+	// endpoint for a client.
 	Endpoint *string
 
 	// The resolver to use for looking up endpoints for AWS service clients
@@ -65,8 +65,8 @@ type Config struct {
 	// noted. A full list of regions is found in the "Regions and Endpoints"
 	// document.
 	//
-	// @see http://docs.aws.amazon.com/general/latest/gr/rande.html
+	// See http://docs.aws.amazon.com/general/latest/gr/rande.html for AWS
-	//   AWS Regions and Endpoints
+	// Regions and Endpoints.
 	Region *string
 
 	// Set this to `true` to disable SSL when sending requests. Defaults
@@ -120,9 +120,10 @@ type Config struct {
 	// 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.
+	// Note: This configuration option is specific to the Amazon S3 service.
-	// @see http://docs.aws.amazon.com/AmazonS3/latest/dev/VirtualHosting.html
+	//
-	//   Amazon S3: Virtual Hosting of Buckets
+	// See http://docs.aws.amazon.com/AmazonS3/latest/dev/VirtualHosting.html
+	// for Amazon S3: Virtual Hosting of Buckets
 	S3ForcePathStyle *bool
 
 	// Set this to `true` to disable the SDK adding the `Expect: 100-Continue`
@@ -137,7 +138,7 @@ type Config struct {
 	// `ExpectContinueTimeout` for information on adjusting the continue wait
 	// timeout. https://golang.org/pkg/net/http/#Transport
 	//
-	// You should use this flag to disble 100-Continue if you experience issues
+	// You should use this flag to disable 100-Continue if you experience issues
 	// with proxies or third party S3 compatible services.
 	S3Disable100Continue *bool
 
@@ -160,6 +161,17 @@ type Config struct {
 	// on GetObject API calls.
 	S3DisableContentMD5Validation *bool
 
+	// Set this to `true` to have the S3 service client to use the region specified
+	// in the ARN, when an ARN is provided as an argument to a bucket parameter.
+	S3UseARNRegion *bool
+
+	// Set this to `true` to enable the SDK to unmarshal API response header maps to
+	// normalized lower case map keys.
+	//
+	// For example S3's X-Amz-Meta prefixed header will be unmarshaled to lower case
+	// Metadata member's map keys. The value of the header in the map is unaffected.
+	LowerCaseHeaderMaps *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 client to create a new http.Client. This options is only
@@ -171,7 +183,7 @@ type Config struct {
 	//
 	// Example:
 	//    sess := session.Must(session.NewSession(aws.NewConfig()
-	//       .WithEC2MetadataDiableTimeoutOverride(true)))
+	//       .WithEC2MetadataDisableTimeoutOverride(true)))
 	//
 	//    svc := s3.New(sess)
 	//
@@ -182,7 +194,7 @@ type Config struct {
 	// 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
+	// to make requests. 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.
 	//
@@ -223,12 +235,41 @@ type Config struct {
 	//    	Key: aws.String("//foo//bar//moo"),
 	//    })
 	DisableRestProtocolURICleaning *bool
+
+	// EnableEndpointDiscovery will allow for endpoint discovery on operations that
+	// have the definition in its model. By default, endpoint discovery is off.
+	// To use EndpointDiscovery, Endpoint should be unset or set to an empty string.
+	//
+	// Example:
+	//    sess := session.Must(session.NewSession(&aws.Config{
+	//         EnableEndpointDiscovery: aws.Bool(true),
+	//    }))
+	//
+	//    svc := s3.New(sess)
+	//    out, err := svc.GetObject(&s3.GetObjectInput {
+	//    	Bucket: aws.String("bucketname"),
+	//    	Key: aws.String("/foo/bar/moo"),
+	//    })
+	EnableEndpointDiscovery *bool
+
+	// DisableEndpointHostPrefix will disable the SDK's behavior of prefixing
+	// request endpoint hosts with modeled information.
+	//
+	// Disabling this feature is useful when you want to use local endpoints
+	// for testing that do not support the modeled host prefix pattern.
+	DisableEndpointHostPrefix *bool
+
+	// STSRegionalEndpoint will enable regional or legacy endpoint resolving
+	STSRegionalEndpoint endpoints.STSRegionalEndpoint
+
+	// S3UsEast1RegionalEndpoint will enable regional or legacy endpoint resolving
+	S3UsEast1RegionalEndpoint endpoints.S3UsEast1RegionalEndpoint
 }
 
 // NewConfig returns a new Config pointer that can be chained with builder
 // methods to set multiple configuration values inline without using pointers.
 //
-//     // Create Session with MaxRetry configuration to be shared by multiple
+//     // Create Session with MaxRetries configuration to be shared by multiple
 //     // service clients.
 //     sess := session.Must(session.NewSession(aws.NewConfig().
 //         WithMaxRetries(3),
@@ -356,6 +397,13 @@ func (c *Config) WithS3DisableContentMD5Validation(enable bool) *Config {
 
 }
 
+// WithS3UseARNRegion sets a config S3UseARNRegion value and
+// returning a Config pointer for chaining
+func (c *Config) WithS3UseARNRegion(enable bool) *Config {
+	c.S3UseARNRegion = &enable
+	return c
+}
+
 // WithUseDualStack sets a config UseDualStack value returning a Config
 // pointer for chaining.
 func (c *Config) WithUseDualStack(enable bool) *Config {
@@ -377,6 +425,19 @@ func (c *Config) WithSleepDelay(fn func(time.Duration)) *Config {
 	return c
 }
 
+// WithEndpointDiscovery will set whether or not to use endpoint discovery.
+func (c *Config) WithEndpointDiscovery(t bool) *Config {
+	c.EnableEndpointDiscovery = &t
+	return c
+}
+
+// WithDisableEndpointHostPrefix will set whether or not to use modeled host prefix
+// when making requests.
+func (c *Config) WithDisableEndpointHostPrefix(t bool) *Config {
+	c.DisableEndpointHostPrefix = &t
+	return c
+}
+
 // MergeIn merges the passed in configs into the existing config object.
 func (c *Config) MergeIn(cfgs ...*Config) {
 	for _, other := range cfgs {
@@ -384,6 +445,20 @@ func (c *Config) MergeIn(cfgs ...*Config) {
 	}
 }
 
+// WithSTSRegionalEndpoint will set whether or not to use regional endpoint flag
+// when resolving the endpoint for a service
+func (c *Config) WithSTSRegionalEndpoint(sre endpoints.STSRegionalEndpoint) *Config {
+	c.STSRegionalEndpoint = sre
+	return c
+}
+
+// WithS3UsEast1RegionalEndpoint will set whether or not to use regional endpoint flag
+// when resolving the endpoint for a service
+func (c *Config) WithS3UsEast1RegionalEndpoint(sre endpoints.S3UsEast1RegionalEndpoint) *Config {
+	c.S3UsEast1RegionalEndpoint = sre
+	return c
+}
+
 func mergeInConfig(dst *Config, other *Config) {
 	if other == nil {
 		return
@@ -457,6 +532,10 @@ func mergeInConfig(dst *Config, other *Config) {
 		dst.S3DisableContentMD5Validation = other.S3DisableContentMD5Validation
 	}
 
+	if other.S3UseARNRegion != nil {
+		dst.S3UseARNRegion = other.S3UseARNRegion
+	}
+
 	if other.UseDualStack != nil {
 		dst.UseDualStack = other.UseDualStack
 	}
@@ -476,6 +555,22 @@ func mergeInConfig(dst *Config, other *Config) {
 	if other.EnforceShouldRetryCheck != nil {
 		dst.EnforceShouldRetryCheck = other.EnforceShouldRetryCheck
 	}
+
+	if other.EnableEndpointDiscovery != nil {
+		dst.EnableEndpointDiscovery = other.EnableEndpointDiscovery
+	}
+
+	if other.DisableEndpointHostPrefix != nil {
+		dst.DisableEndpointHostPrefix = other.DisableEndpointHostPrefix
+	}
+
+	if other.STSRegionalEndpoint != endpoints.UnsetSTSEndpoint {
+		dst.STSRegionalEndpoint = other.STSRegionalEndpoint
+	}
+
+	if other.S3UsEast1RegionalEndpoint != endpoints.UnsetS3UsEast1Endpoint {
+		dst.S3UsEast1RegionalEndpoint = other.S3UsEast1RegionalEndpoint
+	}
 }
 
 // Copy will return a shallow copy of the Config object. If any additional

vendor/github.com/aws/aws-sdk-go/aws/context_1_5.go

@@ -1,8 +1,8 @@
+// +build !go1.9
+
 package aws
 
-import (
+import "time"
-	"time"
-)
 
 // Context is an copy of the Go v1.7 stdlib's context.Context interface.
 // It is represented as a SDK interface to enable you to use the "WithContext"
@@ -35,37 +35,3 @@ type Context interface {
 	// functions.
 	Value(key interface{}) interface{}
 }
-
-// BackgroundContext returns a context that will never be canceled, has no
-// values, and no deadline. This context is used by the SDK to provide
-// backwards compatibility with non-context API operations and functionality.
-//
-// Go 1.6 and before:
-// This context function is equivalent to context.Background in the Go stdlib.
-//
-// Go 1.7 and later:
-// The context returned will be the value returned by context.Background()
-//
-// See https://golang.org/pkg/context for more information on Contexts.
-func BackgroundContext() Context {
-	return backgroundCtx
-}
-
-// SleepWithContext will wait for the timer duration to expire, or the context
-// is canceled. Which ever happens first. If the context is canceled the Context's
-// error will be returned.
-//
-// Expects Context to always return a non-nil error if the Done channel is closed.
-func SleepWithContext(ctx Context, dur time.Duration) error {
-	t := time.NewTimer(dur)
-	defer t.Stop()
-
-	select {
-	case <-t.C:
-		break
-	case <-ctx.Done():
-		return ctx.Err()
-	}
-
-	return nil
-}

vendor/github.com/aws/aws-sdk-go/aws/context_1_7.go

@@ -1,9 +0,0 @@
-// +build go1.7
-
-package aws
-
-import "context"
-
-var (
-	backgroundCtx = context.Background()
-)

vendor/github.com/aws/aws-sdk-go/aws/context_1_9.go

@@ -0,0 +1,11 @@
+// +build go1.9
+
+package aws
+
+import "context"
+
+// Context is an alias of the Go stdlib's context.Context interface.
+// It can be used within the SDK's API operation "WithContext" methods.
+//
+// See https://golang.org/pkg/context on how to use contexts.
+type Context = context.Context

vendor/github.com/aws/aws-sdk-go/aws/context_background_1_5.go

@@ -0,0 +1,22 @@
+// +build !go1.7
+
+package aws
+
+import (
+	"github.com/aws/aws-sdk-go/internal/context"
+)
+
+// BackgroundContext returns a context that will never be canceled, has no
+// values, and no deadline. This context is used by the SDK to provide
+// backwards compatibility with non-context API operations and functionality.
+//
+// Go 1.6 and before:
+// This context function is equivalent to context.Background in the Go stdlib.
+//
+// Go 1.7 and later:
+// The context returned will be the value returned by context.Background()
+//
+// See https://golang.org/pkg/context for more information on Contexts.
+func BackgroundContext() Context {
+	return context.BackgroundCtx
+}

vendor/github.com/aws/aws-sdk-go/aws/context_background_1_7.go

@@ -0,0 +1,20 @@
+// +build go1.7
+
+package aws
+
+import "context"
+
+// BackgroundContext returns a context that will never be canceled, has no
+// values, and no deadline. This context is used by the SDK to provide
+// backwards compatibility with non-context API operations and functionality.
+//
+// Go 1.6 and before:
+// This context function is equivalent to context.Background in the Go stdlib.
+//
+// Go 1.7 and later:
+// The context returned will be the value returned by context.Background()
+//
+// See https://golang.org/pkg/context for more information on Contexts.
+func BackgroundContext() Context {
+	return context.Background()
+}

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

@@ -0,0 +1,24 @@
+package aws
+
+import (
+	"time"
+)
+
+// SleepWithContext will wait for the timer duration to expire, or the context
+// is canceled. Which ever happens first. If the context is canceled the Context's
+// error will be returned.
+//
+// Expects Context to always return a non-nil error if the Done channel is closed.
+func SleepWithContext(ctx Context, dur time.Duration) error {
+	t := time.NewTimer(dur)
+	defer t.Stop()
+
+	select {
+	case <-t.C:
+		break
+	case <-ctx.Done():
+		return ctx.Err()
+	}
+
+	return nil
+}

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

@@ -179,6 +179,242 @@ func IntValueMap(src map[string]*int) map[string]int {
 	return dst
 }
 
+// Uint returns a pointer to the uint value passed in.
+func Uint(v uint) *uint {
+	return &v
+}
+
+// UintValue returns the value of the uint pointer passed in or
+// 0 if the pointer is nil.
+func UintValue(v *uint) uint {
+	if v != nil {
+		return *v
+	}
+	return 0
+}
+
+// UintSlice converts a slice of uint values uinto a slice of
+// uint pointers
+func UintSlice(src []uint) []*uint {
+	dst := make([]*uint, len(src))
+	for i := 0; i < len(src); i++ {
+		dst[i] = &(src[i])
+	}
+	return dst
+}
+
+// UintValueSlice converts a slice of uint pointers uinto a slice of
+// uint values
+func UintValueSlice(src []*uint) []uint {
+	dst := make([]uint, len(src))
+	for i := 0; i < len(src); i++ {
+		if src[i] != nil {
+			dst[i] = *(src[i])
+		}
+	}
+	return dst
+}
+
+// UintMap converts a string map of uint values uinto a string
+// map of uint pointers
+func UintMap(src map[string]uint) map[string]*uint {
+	dst := make(map[string]*uint)
+	for k, val := range src {
+		v := val
+		dst[k] = &v
+	}
+	return dst
+}
+
+// UintValueMap converts a string map of uint pointers uinto a string
+// map of uint values
+func UintValueMap(src map[string]*uint) map[string]uint {
+	dst := make(map[string]uint)
+	for k, val := range src {
+		if val != nil {
+			dst[k] = *val
+		}
+	}
+	return dst
+}
+
+// Int8 returns a pointer to the int8 value passed in.
+func Int8(v int8) *int8 {
+	return &v
+}
+
+// Int8Value returns the value of the int8 pointer passed in or
+// 0 if the pointer is nil.
+func Int8Value(v *int8) int8 {
+	if v != nil {
+		return *v
+	}
+	return 0
+}
+
+// Int8Slice converts a slice of int8 values into a slice of
+// int8 pointers
+func Int8Slice(src []int8) []*int8 {
+	dst := make([]*int8, len(src))
+	for i := 0; i < len(src); i++ {
+		dst[i] = &(src[i])
+	}
+	return dst
+}
+
+// Int8ValueSlice converts a slice of int8 pointers into a slice of
+// int8 values
+func Int8ValueSlice(src []*int8) []int8 {
+	dst := make([]int8, len(src))
+	for i := 0; i < len(src); i++ {
+		if src[i] != nil {
+			dst[i] = *(src[i])
+		}
+	}
+	return dst
+}
+
+// Int8Map converts a string map of int8 values into a string
+// map of int8 pointers
+func Int8Map(src map[string]int8) map[string]*int8 {
+	dst := make(map[string]*int8)
+	for k, val := range src {
+		v := val
+		dst[k] = &v
+	}
+	return dst
+}
+
+// Int8ValueMap converts a string map of int8 pointers into a string
+// map of int8 values
+func Int8ValueMap(src map[string]*int8) map[string]int8 {
+	dst := make(map[string]int8)
+	for k, val := range src {
+		if val != nil {
+			dst[k] = *val
+		}
+	}
+	return dst
+}
+
+// Int16 returns a pointer to the int16 value passed in.
+func Int16(v int16) *int16 {
+	return &v
+}
+
+// Int16Value returns the value of the int16 pointer passed in or
+// 0 if the pointer is nil.
+func Int16Value(v *int16) int16 {
+	if v != nil {
+		return *v
+	}
+	return 0
+}
+
+// Int16Slice converts a slice of int16 values into a slice of
+// int16 pointers
+func Int16Slice(src []int16) []*int16 {
+	dst := make([]*int16, len(src))
+	for i := 0; i < len(src); i++ {
+		dst[i] = &(src[i])
+	}
+	return dst
+}
+
+// Int16ValueSlice converts a slice of int16 pointers into a slice of
+// int16 values
+func Int16ValueSlice(src []*int16) []int16 {
+	dst := make([]int16, len(src))
+	for i := 0; i < len(src); i++ {
+		if src[i] != nil {
+			dst[i] = *(src[i])
+		}
+	}
+	return dst
+}
+
+// Int16Map converts a string map of int16 values into a string
+// map of int16 pointers
+func Int16Map(src map[string]int16) map[string]*int16 {
+	dst := make(map[string]*int16)
+	for k, val := range src {
+		v := val
+		dst[k] = &v
+	}
+	return dst
+}
+
+// Int16ValueMap converts a string map of int16 pointers into a string
+// map of int16 values
+func Int16ValueMap(src map[string]*int16) map[string]int16 {
+	dst := make(map[string]int16)
+	for k, val := range src {
+		if val != nil {
+			dst[k] = *val
+		}
+	}
+	return dst
+}
+
+// Int32 returns a pointer to the int32 value passed in.
+func Int32(v int32) *int32 {
+	return &v
+}
+
+// Int32Value returns the value of the int32 pointer passed in or
+// 0 if the pointer is nil.
+func Int32Value(v *int32) int32 {
+	if v != nil {
+		return *v
+	}
+	return 0
+}
+
+// Int32Slice converts a slice of int32 values into a slice of
+// int32 pointers
+func Int32Slice(src []int32) []*int32 {
+	dst := make([]*int32, len(src))
+	for i := 0; i < len(src); i++ {
+		dst[i] = &(src[i])
+	}
+	return dst
+}
+
+// Int32ValueSlice converts a slice of int32 pointers into a slice of
+// int32 values
+func Int32ValueSlice(src []*int32) []int32 {
+	dst := make([]int32, len(src))
+	for i := 0; i < len(src); i++ {
+		if src[i] != nil {
+			dst[i] = *(src[i])
+		}
+	}
+	return dst
+}
+
+// Int32Map converts a string map of int32 values into a string
+// map of int32 pointers
+func Int32Map(src map[string]int32) map[string]*int32 {
+	dst := make(map[string]*int32)
+	for k, val := range src {
+		v := val
+		dst[k] = &v
+	}
+	return dst
+}
+
+// Int32ValueMap converts a string map of int32 pointers into a string
+// map of int32 values
+func Int32ValueMap(src map[string]*int32) map[string]int32 {
+	dst := make(map[string]int32)
+	for k, val := range src {
+		if val != nil {
+			dst[k] = *val
+		}
+	}
+	return dst
+}
+
 // Int64 returns a pointer to the int64 value passed in.
 func Int64(v int64) *int64 {
 	return &v
@@ -238,6 +474,301 @@ func Int64ValueMap(src map[string]*int64) map[string]int64 {
 	return dst
 }
 
+// Uint8 returns a pointer to the uint8 value passed in.
+func Uint8(v uint8) *uint8 {
+	return &v
+}
+
+// Uint8Value returns the value of the uint8 pointer passed in or
+// 0 if the pointer is nil.
+func Uint8Value(v *uint8) uint8 {
+	if v != nil {
+		return *v
+	}
+	return 0
+}
+
+// Uint8Slice converts a slice of uint8 values into a slice of
+// uint8 pointers
+func Uint8Slice(src []uint8) []*uint8 {
+	dst := make([]*uint8, len(src))
+	for i := 0; i < len(src); i++ {
+		dst[i] = &(src[i])
+	}
+	return dst
+}
+
+// Uint8ValueSlice converts a slice of uint8 pointers into a slice of
+// uint8 values
+func Uint8ValueSlice(src []*uint8) []uint8 {
+	dst := make([]uint8, len(src))
+	for i := 0; i < len(src); i++ {
+		if src[i] != nil {
+			dst[i] = *(src[i])
+		}
+	}
+	return dst
+}
+
+// Uint8Map converts a string map of uint8 values into a string
+// map of uint8 pointers
+func Uint8Map(src map[string]uint8) map[string]*uint8 {
+	dst := make(map[string]*uint8)
+	for k, val := range src {
+		v := val
+		dst[k] = &v
+	}
+	return dst
+}
+
+// Uint8ValueMap converts a string map of uint8 pointers into a string
+// map of uint8 values
+func Uint8ValueMap(src map[string]*uint8) map[string]uint8 {
+	dst := make(map[string]uint8)
+	for k, val := range src {
+		if val != nil {
+			dst[k] = *val
+		}
+	}
+	return dst
+}
+
+// Uint16 returns a pointer to the uint16 value passed in.
+func Uint16(v uint16) *uint16 {
+	return &v
+}
+
+// Uint16Value returns the value of the uint16 pointer passed in or
+// 0 if the pointer is nil.
+func Uint16Value(v *uint16) uint16 {
+	if v != nil {
+		return *v
+	}
+	return 0
+}
+
+// Uint16Slice converts a slice of uint16 values into a slice of
+// uint16 pointers
+func Uint16Slice(src []uint16) []*uint16 {
+	dst := make([]*uint16, len(src))
+	for i := 0; i < len(src); i++ {
+		dst[i] = &(src[i])
+	}
+	return dst
+}
+
+// Uint16ValueSlice converts a slice of uint16 pointers into a slice of
+// uint16 values
+func Uint16ValueSlice(src []*uint16) []uint16 {
+	dst := make([]uint16, len(src))
+	for i := 0; i < len(src); i++ {
+		if src[i] != nil {
+			dst[i] = *(src[i])
+		}
+	}
+	return dst
+}
+
+// Uint16Map converts a string map of uint16 values into a string
+// map of uint16 pointers
+func Uint16Map(src map[string]uint16) map[string]*uint16 {
+	dst := make(map[string]*uint16)
+	for k, val := range src {
+		v := val
+		dst[k] = &v
+	}
+	return dst
+}
+
+// Uint16ValueMap converts a string map of uint16 pointers into a string
+// map of uint16 values
+func Uint16ValueMap(src map[string]*uint16) map[string]uint16 {
+	dst := make(map[string]uint16)
+	for k, val := range src {
+		if val != nil {
+			dst[k] = *val
+		}
+	}
+	return dst
+}
+
+// Uint32 returns a pointer to the uint32 value passed in.
+func Uint32(v uint32) *uint32 {
+	return &v
+}
+
+// Uint32Value returns the value of the uint32 pointer passed in or
+// 0 if the pointer is nil.
+func Uint32Value(v *uint32) uint32 {
+	if v != nil {
+		return *v
+	}
+	return 0
+}
+
+// Uint32Slice converts a slice of uint32 values into a slice of
+// uint32 pointers
+func Uint32Slice(src []uint32) []*uint32 {
+	dst := make([]*uint32, len(src))
+	for i := 0; i < len(src); i++ {
+		dst[i] = &(src[i])
+	}
+	return dst
+}
+
+// Uint32ValueSlice converts a slice of uint32 pointers into a slice of
+// uint32 values
+func Uint32ValueSlice(src []*uint32) []uint32 {
+	dst := make([]uint32, len(src))
+	for i := 0; i < len(src); i++ {
+		if src[i] != nil {
+			dst[i] = *(src[i])
+		}
+	}
+	return dst
+}
+
+// Uint32Map converts a string map of uint32 values into a string
+// map of uint32 pointers
+func Uint32Map(src map[string]uint32) map[string]*uint32 {
+	dst := make(map[string]*uint32)
+	for k, val := range src {
+		v := val
+		dst[k] = &v
+	}
+	return dst
+}
+
+// Uint32ValueMap converts a string map of uint32 pointers into a string
+// map of uint32 values
+func Uint32ValueMap(src map[string]*uint32) map[string]uint32 {
+	dst := make(map[string]uint32)
+	for k, val := range src {
+		if val != nil {
+			dst[k] = *val
+		}
+	}
+	return dst
+}
+
+// Uint64 returns a pointer to the uint64 value passed in.
+func Uint64(v uint64) *uint64 {
+	return &v
+}
+
+// Uint64Value returns the value of the uint64 pointer passed in or
+// 0 if the pointer is nil.
+func Uint64Value(v *uint64) uint64 {
+	if v != nil {
+		return *v
+	}
+	return 0
+}
+
+// Uint64Slice converts a slice of uint64 values into a slice of
+// uint64 pointers
+func Uint64Slice(src []uint64) []*uint64 {
+	dst := make([]*uint64, len(src))
+	for i := 0; i < len(src); i++ {
+		dst[i] = &(src[i])
+	}
+	return dst
+}
+
+// Uint64ValueSlice converts a slice of uint64 pointers into a slice of
+// uint64 values
+func Uint64ValueSlice(src []*uint64) []uint64 {
+	dst := make([]uint64, len(src))
+	for i := 0; i < len(src); i++ {
+		if src[i] != nil {
+			dst[i] = *(src[i])
+		}
+	}
+	return dst
+}
+
+// Uint64Map converts a string map of uint64 values into a string
+// map of uint64 pointers
+func Uint64Map(src map[string]uint64) map[string]*uint64 {
+	dst := make(map[string]*uint64)
+	for k, val := range src {
+		v := val
+		dst[k] = &v
+	}
+	return dst
+}
+
+// Uint64ValueMap converts a string map of uint64 pointers into a string
+// map of uint64 values
+func Uint64ValueMap(src map[string]*uint64) map[string]uint64 {
+	dst := make(map[string]uint64)
+	for k, val := range src {
+		if val != nil {
+			dst[k] = *val
+		}
+	}
+	return dst
+}
+
+// Float32 returns a pointer to the float32 value passed in.
+func Float32(v float32) *float32 {
+	return &v
+}
+
+// Float32Value returns the value of the float32 pointer passed in or
+// 0 if the pointer is nil.
+func Float32Value(v *float32) float32 {
+	if v != nil {
+		return *v
+	}
+	return 0
+}
+
+// Float32Slice converts a slice of float32 values into a slice of
+// float32 pointers
+func Float32Slice(src []float32) []*float32 {
+	dst := make([]*float32, len(src))
+	for i := 0; i < len(src); i++ {
+		dst[i] = &(src[i])
+	}
+	return dst
+}
+
+// Float32ValueSlice converts a slice of float32 pointers into a slice of
+// float32 values
+func Float32ValueSlice(src []*float32) []float32 {
+	dst := make([]float32, len(src))
+	for i := 0; i < len(src); i++ {
+		if src[i] != nil {
+			dst[i] = *(src[i])
+		}
+	}
+	return dst
+}
+
+// Float32Map converts a string map of float32 values into a string
+// map of float32 pointers
+func Float32Map(src map[string]float32) map[string]*float32 {
+	dst := make(map[string]*float32)
+	for k, val := range src {
+		v := val
+		dst[k] = &v
+	}
+	return dst
+}
+
+// Float32ValueMap converts a string map of float32 pointers into a string
+// map of float32 values
+func Float32ValueMap(src map[string]*float32) map[string]float32 {
+	dst := make(map[string]float32)
+	for k, val := range src {
+		if val != nil {
+			dst[k] = *val
+		}
+	}
+	return dst
+}
+
 // Float64 returns a pointer to the float64 value passed in.
 func Float64(v float64) *float64 {
 	return &v

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

@@ -72,9 +72,9 @@ var ValidateReqSigHandler = request.NamedHandler{
 			signedTime = r.LastSignedAt
 		}
 
-		// 10 minutes to allow for some clock skew/delays in transmission.
+		// 5 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()) {
+		if signedTime.Add(5 * time.Minute).After(time.Now()) {
 			return
 		}
 
@@ -159,9 +159,9 @@ func handleSendError(r *request.Request, err error) {
 			Body:       ioutil.NopCloser(bytes.NewReader([]byte{})),
 		}
 	}
-	// Catch all other request errors.
+	// Catch all request errors, and let the default retrier determine
-	r.Error = awserr.New("RequestError", "send request failed", err)
+	// if the error is retryable.
-	r.Retryable = aws.Bool(true) // network errors are retryable
+	r.Error = awserr.New(request.ErrCodeRequestError, "send request failed", err)
 
 	// Override the error with a context canceled error, if that was canceled.
 	ctx := r.Context()
@@ -184,37 +184,39 @@ var ValidateResponseHandler = request.NamedHandler{Name: "core.ValidateResponseH
 
 // AfterRetryHandler performs final checks to determine if the request should
 // be retried and how long to delay.
-var AfterRetryHandler = request.NamedHandler{Name: "core.AfterRetryHandler", Fn: func(r *request.Request) {
+var AfterRetryHandler = request.NamedHandler{
-	// If one of the other handlers already set the retry state
+	Name: "core.AfterRetryHandler",
-	// we don't want to override it based on the service's state
+	Fn: func(r *request.Request) {
-	if r.Retryable == nil || aws.BoolValue(r.Config.EnforceShouldRetryCheck) {
+		// If one of the other handlers already set the retry state
-		r.Retryable = aws.Bool(r.ShouldRetry(r))
+		// we don't want to override it based on the service's state
-	}
+		if r.Retryable == nil || aws.BoolValue(r.Config.EnforceShouldRetryCheck) {
-
+			r.Retryable = aws.Bool(r.ShouldRetry(r))
-	if r.WillRetry() {
-		r.RetryDelay = r.RetryRules(r)
-
-		if sleepFn := r.Config.SleepDelay; sleepFn != nil {
-			// Support SleepDelay for backwards compatibility and testing
-			sleepFn(r.RetryDelay)
-		} else if err := aws.SleepWithContext(r.Context(), r.RetryDelay); err != nil {
-			r.Error = awserr.New(request.CanceledErrorCode,
-				"request context canceled", err)
-			r.Retryable = aws.Bool(false)
-			return
 		}
 
-		// when the expired token exception occurs the credentials
+		if r.WillRetry() {
-		// need to be expired locally so that the next request to
+			r.RetryDelay = r.RetryRules(r)
-		// get credentials will trigger a credentials refresh.
-		if r.IsErrorExpired() {
-			r.Config.Credentials.Expire()
-		}
 
-		r.RetryCount++
+			if sleepFn := r.Config.SleepDelay; sleepFn != nil {
-		r.Error = nil
+				// Support SleepDelay for backwards compatibility and testing
-	}
+				sleepFn(r.RetryDelay)
-}}
+			} else if err := aws.SleepWithContext(r.Context(), r.RetryDelay); err != nil {
+				r.Error = awserr.New(request.CanceledErrorCode,
+					"request context canceled", err)
+				r.Retryable = aws.Bool(false)
+				return
+			}
+
+			// when the expired token exception occurs the credentials
+			// need to be expired locally so that the next request to
+			// get credentials will trigger a credentials refresh.
+			if r.IsErrorExpired() {
+				r.Config.Credentials.Expire()
+			}
+
+			r.RetryCount++
+			r.Error = nil
+		}
+	}}
 
 // ValidateEndpointHandler is a request handler to validate a request had the
 // appropriate Region and Endpoint set. Will set r.Error if the endpoint or
@@ -223,6 +225,8 @@ var ValidateEndpointHandler = request.NamedHandler{Name: "core.ValidateEndpointH
 	if r.ClientInfo.SigningRegion == "" && aws.StringValue(r.Config.Region) == "" {
 		r.Error = aws.ErrMissingRegion
 	} else if r.ClientInfo.Endpoint == "" {
+		// Was any endpoint provided by the user, or one was derived by the
+		// SDK's endpoint resolver?
 		r.Error = aws.ErrMissingEndpoint
 	}
 }}

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

@@ -17,7 +17,7 @@ var SDKVersionUserAgentHandler = request.NamedHandler{
 }
 
 const execEnvVar = `AWS_EXECUTION_ENV`
-const execEnvUAKey = `exec_env`
+const execEnvUAKey = `exec-env`
 
 // AddHostExecEnvUserAgentHander is a request handler appending the SDK's
 // execution environment to the user agent.

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

@@ -9,9 +9,7 @@ var (
 	// providers in the ChainProvider.
 	//
 	// This has been deprecated. For verbose error messaging set
-	// aws.Config.CredentialsChainVerboseErrors to true
+	// aws.Config.CredentialsChainVerboseErrors to true.
-	//
-	// @readonly
 	ErrNoValidProvidersFoundInChain = awserr.New("NoCredentialProviders",
 		`no valid providers in chain. Deprecated.
 	For verbose messaging see aws.Config.CredentialsChainVerboseErrors`,

vendor/github.com/aws/aws-sdk-go/aws/credentials/context_background_go1.5.go

@@ -0,0 +1,22 @@
+// +build !go1.7
+
+package credentials
+
+import (
+	"github.com/aws/aws-sdk-go/internal/context"
+)
+
+// backgroundContext returns a context that will never be canceled, has no
+// values, and no deadline. This context is used by the SDK to provide
+// backwards compatibility with non-context API operations and functionality.
+//
+// Go 1.6 and before:
+// This context function is equivalent to context.Background in the Go stdlib.
+//
+// Go 1.7 and later:
+// The context returned will be the value returned by context.Background()
+//
+// See https://golang.org/pkg/context for more information on Contexts.
+func backgroundContext() Context {
+	return context.BackgroundCtx
+}

vendor/github.com/aws/aws-sdk-go/aws/credentials/context_background_go1.7.go

@@ -0,0 +1,20 @@
+// +build go1.7
+
+package credentials
+
+import "context"
+
+// backgroundContext returns a context that will never be canceled, has no
+// values, and no deadline. This context is used by the SDK to provide
+// backwards compatibility with non-context API operations and functionality.
+//
+// Go 1.6 and before:
+// This context function is equivalent to context.Background in the Go stdlib.
+//
+// Go 1.7 and later:
+// The context returned will be the value returned by context.Background()
+//
+// See https://golang.org/pkg/context for more information on Contexts.
+func backgroundContext() Context {
+	return context.Background()
+}

vendor/github.com/aws/aws-sdk-go/aws/credentials/context_go1.5.go

@@ -0,0 +1,39 @@
+// +build !go1.9
+
+package credentials
+
+import "time"
+
+// Context is an copy of the Go v1.7 stdlib's context.Context interface.
+// It is represented as a SDK interface to enable you to use the "WithContext"
+// API methods with Go v1.6 and a Context type such as golang.org/x/net/context.
+//
+// This type, aws.Context, and context.Context are equivalent.
+//
+// See https://golang.org/pkg/context on how to use contexts.
+type Context interface {
+	// Deadline returns the time when work done on behalf of this context
+	// should be canceled. Deadline returns ok==false when no deadline is
+	// set. Successive calls to Deadline return the same results.
+	Deadline() (deadline time.Time, ok bool)
+
+	// Done returns a channel that's closed when work done on behalf of this
+	// context should be canceled. Done may return nil if this context can
+	// never be canceled. Successive calls to Done return the same value.
+	Done() <-chan struct{}
+
+	// Err returns a non-nil error value after Done is closed. Err returns
+	// Canceled if the context was canceled or DeadlineExceeded if the
+	// context's deadline passed. No other values for Err are defined.
+	// After Done is closed, successive calls to Err return the same value.
+	Err() error
+
+	// Value returns the value associated with this context for key, or nil
+	// if no value is associated with key. Successive calls to Value with
+	// the same key returns the same result.
+	//
+	// Use context values only for request-scoped data that transits
+	// processes and API boundaries, not for passing optional parameters to
+	// functions.
+	Value(key interface{}) interface{}
+}

vendor/github.com/aws/aws-sdk-go/aws/credentials/context_go1.9.go

@@ -0,0 +1,13 @@
+// +build go1.9
+
+package credentials
+
+import "context"
+
+// Context is an alias of the Go stdlib's context.Context interface.
+// It can be used within the SDK's API operation "WithContext" methods.
+//
+// This type, aws.Context, and context.Context are equivalent.
+//
+// See https://golang.org/pkg/context on how to use contexts.
+type Context = context.Context

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

@@ -49,8 +49,12 @@
 package credentials
 
 import (
-	"sync"
+	"fmt"
+	"sync/atomic"
 	"time"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/internal/sync/singleflight"
 )
 
 // AnonymousCredentials is an empty Credential object that can be used as
@@ -64,8 +68,6 @@ import (
 //       Credentials: credentials.AnonymousCredentials,
 //     })))
 //     // Access public S3 buckets.
-//
-// @readonly
 var AnonymousCredentials = NewStaticCredentials("", "", "")
 
 // A Value is the AWS credentials value for individual credential fields.
@@ -83,6 +85,12 @@ type Value struct {
 	ProviderName string
 }
 
+// HasKeys returns if the credentials Value has both AccessKeyID and
+// SecretAccessKey value set.
+func (v Value) HasKeys() bool {
+	return len(v.AccessKeyID) != 0 && len(v.SecretAccessKey) != 0
+}
+
 // A Provider is the interface for any component which will provide credentials
 // Value. A provider is required to manage its own Expired state, and what to
 // be expired means.
@@ -99,6 +107,21 @@ type Provider interface {
 	IsExpired() bool
 }
 
+// ProviderWithContext is a Provider that can retrieve credentials with a Context
+type ProviderWithContext interface {
+	Provider
+
+	RetrieveWithContext(Context) (Value, error)
+}
+
+// An Expirer is an interface that Providers can implement to expose the expiration
+// time, if known.  If the Provider cannot accurately provide this info,
+// it should not implement this interface.
+type Expirer interface {
+	// The time at which the credentials are no longer valid
+	ExpiresAt() time.Time
+}
+
 // An ErrorProvider is a stub credentials provider that always returns an error
 // this is used by the SDK when construction a known provider is not possible
 // due to an error.
@@ -165,6 +188,11 @@ func (e *Expiry) IsExpired() bool {
 	return e.expiration.Before(curTime())
 }
 
+// ExpiresAt returns the expiration time of the credential
+func (e *Expiry) ExpiresAt() time.Time {
+	return e.expiration
+}
+
 // A Credentials provides concurrency safe retrieval of AWS credentials Value.
 // Credentials will cache the credentials value until they expire. Once the value
 // expires the next Get will attempt to retrieve valid credentials.
@@ -177,20 +205,68 @@ func (e *Expiry) IsExpired() bool {
 // first instance of the credentials Value. All calls to Get() after that
 // will return the cached credentials Value until IsExpired() returns true.
 type Credentials struct {
-	creds        Value
+	creds atomic.Value
-	forceRefresh bool
+	sf    singleflight.Group
-
-	m sync.RWMutex
 
 	provider Provider
 }
 
 // NewCredentials returns a pointer to a new Credentials with the provider set.
 func NewCredentials(provider Provider) *Credentials {
-	return &Credentials{
+	c := &Credentials{
-		provider:     provider,
+		provider: provider,
-		forceRefresh: true,
 	}
+	c.creds.Store(Value{})
+	return c
+}
+
+// GetWithContext returns the credentials value, or error if the credentials
+// Value failed to be retrieved. Will return early if the passed in context is
+// canceled.
+//
+// Will return the cached credentials Value if it has not expired. If the
+// credentials Value has expired the Provider's Retrieve() will be called
+// to refresh the credentials.
+//
+// If Credentials.Expire() was called the credentials Value will be force
+// expired, and the next call to Get() will cause them to be refreshed.
+//
+// Passed in Context is equivalent to aws.Context, and context.Context.
+func (c *Credentials) GetWithContext(ctx Context) (Value, error) {
+	if curCreds := c.creds.Load(); !c.isExpired(curCreds) {
+		return curCreds.(Value), nil
+	}
+
+	// Cannot pass context down to the actual retrieve, because the first
+	// context would cancel the whole group when there is not direct
+	// association of items in the group.
+	resCh := c.sf.DoChan("", func() (interface{}, error) {
+		return c.singleRetrieve(&suppressedContext{ctx})
+	})
+	select {
+	case res := <-resCh:
+		return res.Val.(Value), res.Err
+	case <-ctx.Done():
+		return Value{}, awserr.New("RequestCanceled",
+			"request context canceled", ctx.Err())
+	}
+}
+
+func (c *Credentials) singleRetrieve(ctx Context) (creds interface{}, err error) {
+	if curCreds := c.creds.Load(); !c.isExpired(curCreds) {
+		return curCreds.(Value), nil
+	}
+
+	if p, ok := c.provider.(ProviderWithContext); ok {
+		creds, err = p.RetrieveWithContext(ctx)
+	} else {
+		creds, err = c.provider.Retrieve()
+	}
+	if err == nil {
+		c.creds.Store(creds)
+	}
+
+	return creds, err
 }
 
 // Get returns the credentials value, or error if the credentials Value failed
@@ -203,30 +279,7 @@ func NewCredentials(provider Provider) *Credentials {
 // If Credentials.Expire() was called the credentials Value will be force
 // expired, and the next call to Get() will cause them to be refreshed.
 func (c *Credentials) Get() (Value, error) {
-	// Check the cached credentials first with just the read lock.
+	return c.GetWithContext(backgroundContext())
-	c.m.RLock()
-	if !c.isExpired() {
-		creds := c.creds
-		c.m.RUnlock()
-		return creds, nil
-	}
-	c.m.RUnlock()
-
-	// Credentials are expired need to retrieve the credentials taking the full
-	// lock.
-	c.m.Lock()
-	defer c.m.Unlock()
-
-	if c.isExpired() {
-		creds, err := c.provider.Retrieve()
-		if err != nil {
-			return Value{}, err
-		}
-		c.creds = creds
-		c.forceRefresh = false
-	}
-
-	return c.creds, nil
 }
 
 // Expire expires the credentials and forces them to be retrieved on the
@@ -235,10 +288,7 @@ func (c *Credentials) Get() (Value, error) {
 // This will override the Provider's expired state, and force Credentials
 // to call the Provider's Retrieve().
 func (c *Credentials) Expire() {
-	c.m.Lock()
+	c.creds.Store(Value{})
-	defer c.m.Unlock()
-
-	c.forceRefresh = true
 }
 
 // IsExpired returns if the credentials are no longer valid, and need
@@ -247,13 +297,43 @@ func (c *Credentials) Expire() {
 // If the Credentials were forced to be expired with Expire() this will
 // reflect that override.
 func (c *Credentials) IsExpired() bool {
-	c.m.RLock()
+	return c.isExpired(c.creds.Load())
-	defer c.m.RUnlock()
-
-	return c.isExpired()
 }
 
 // isExpired helper method wrapping the definition of expired credentials.
-func (c *Credentials) isExpired() bool {
+func (c *Credentials) isExpired(creds interface{}) bool {
-	return c.forceRefresh || c.provider.IsExpired()
+	return creds == nil || creds.(Value) == Value{} || c.provider.IsExpired()
+}
+
+// ExpiresAt provides access to the functionality of the Expirer interface of
+// the underlying Provider, if it supports that interface.  Otherwise, it returns
+// an error.
+func (c *Credentials) ExpiresAt() (time.Time, error) {
+	expirer, ok := c.provider.(Expirer)
+	if !ok {
+		return time.Time{}, awserr.New("ProviderNotExpirer",
+			fmt.Sprintf("provider %s does not support ExpiresAt()", c.creds.Load().(Value).ProviderName),
+			nil)
+	}
+	if c.creds.Load().(Value) == (Value{}) {
+		// set expiration time to the distant past
+		return time.Time{}, nil
+	}
+	return expirer.ExpiresAt(), nil
+}
+
+type suppressedContext struct {
+	Context
+}
+
+func (s *suppressedContext) Deadline() (deadline time.Time, ok bool) {
+	return time.Time{}, false
+}
+
+func (s *suppressedContext) Done() <-chan struct{} {
+	return nil
+}
+
+func (s *suppressedContext) Err() error {
+	return nil
 }

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

@@ -7,10 +7,12 @@ 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/client"
 	"github.com/aws/aws-sdk-go/aws/credentials"
 	"github.com/aws/aws-sdk-go/aws/ec2metadata"
+	"github.com/aws/aws-sdk-go/aws/request"
 	"github.com/aws/aws-sdk-go/internal/sdkuri"
 )
 
@@ -86,7 +88,14 @@ func NewCredentialsWithClient(client *ec2metadata.EC2Metadata, options ...func(*
 // Error will be returned if the request fails, or unable to extract
 // the desired credentials.
 func (m *EC2RoleProvider) Retrieve() (credentials.Value, error) {
-	credsList, err := requestCredList(m.Client)
+	return m.RetrieveWithContext(aws.BackgroundContext())
+}
+
+// RetrieveWithContext retrieves credentials from the EC2 service.
+// Error will be returned if the request fails, or unable to extract
+// the desired credentials.
+func (m *EC2RoleProvider) RetrieveWithContext(ctx credentials.Context) (credentials.Value, error) {
+	credsList, err := requestCredList(ctx, m.Client)
 	if err != nil {
 		return credentials.Value{ProviderName: ProviderName}, err
 	}
@@ -96,7 +105,7 @@ func (m *EC2RoleProvider) Retrieve() (credentials.Value, error) {
 	}
 	credsName := credsList[0]
 
-	roleCreds, err := requestCred(m.Client, credsName)
+	roleCreds, err := requestCred(ctx, m.Client, credsName)
 	if err != nil {
 		return credentials.Value{ProviderName: ProviderName}, err
 	}
@@ -129,8 +138,8 @@ const iamSecurityCredsPath = "iam/security-credentials/"
 
 // requestCredList requests a list of credentials from the EC2 service.
 // If there are no credentials, or there is an error making or receiving the request
-func requestCredList(client *ec2metadata.EC2Metadata) ([]string, error) {
+func requestCredList(ctx aws.Context, client *ec2metadata.EC2Metadata) ([]string, error) {
-	resp, err := client.GetMetadata(iamSecurityCredsPath)
+	resp, err := client.GetMetadataWithContext(ctx, iamSecurityCredsPath)
 	if err != nil {
 		return nil, awserr.New("EC2RoleRequestError", "no EC2 instance role found", err)
 	}
@@ -142,7 +151,8 @@ func requestCredList(client *ec2metadata.EC2Metadata) ([]string, error) {
 	}
 
 	if err := s.Err(); err != nil {
-		return nil, awserr.New("SerializationError", "failed to read EC2 instance role from metadata service", err)
+		return nil, awserr.New(request.ErrCodeSerialization,
+			"failed to read EC2 instance role from metadata service", err)
 	}
 
 	return credsList, nil
@@ -152,8 +162,8 @@ func requestCredList(client *ec2metadata.EC2Metadata) ([]string, error) {
 //
 // If the credentials cannot be found, or there is an error reading the response
 // and error will be returned.
-func requestCred(client *ec2metadata.EC2Metadata, credsName string) (ec2RoleCredRespBody, error) {
+func requestCred(ctx aws.Context, client *ec2metadata.EC2Metadata, credsName string) (ec2RoleCredRespBody, error) {
-	resp, err := client.GetMetadata(sdkuri.PathJoin(iamSecurityCredsPath, credsName))
+	resp, err := client.GetMetadataWithContext(ctx, sdkuri.PathJoin(iamSecurityCredsPath, credsName))
 	if err != nil {
 		return ec2RoleCredRespBody{},
 			awserr.New("EC2RoleRequestError",
@@ -164,7 +174,7 @@ func requestCred(client *ec2metadata.EC2Metadata, credsName string) (ec2RoleCred
 	respCreds := ec2RoleCredRespBody{}
 	if err := json.NewDecoder(strings.NewReader(resp)).Decode(&respCreds); err != nil {
 		return ec2RoleCredRespBody{},
-			awserr.New("SerializationError",
+			awserr.New(request.ErrCodeSerialization,
 				fmt.Sprintf("failed to decode %s EC2 instance role credentials", credsName),
 				err)
 	}

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

@@ -39,6 +39,7 @@ import (
 	"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"
+	"github.com/aws/aws-sdk-go/private/protocol/json/jsonutil"
 )
 
 // ProviderName is the name of the credentials provider.
@@ -65,6 +66,10 @@ type Provider struct {
 	//
 	// If ExpiryWindow is 0 or less it will be ignored.
 	ExpiryWindow time.Duration
+
+	// Optional authorization token value if set will be used as the value of
+	// the Authorization header of the endpoint credential request.
+	AuthorizationToken string
 }
 
 // NewProviderClient returns a credentials Provider for retrieving AWS credentials
@@ -93,8 +98,8 @@ func NewProviderClient(cfg aws.Config, handlers request.Handlers, endpoint strin
 	return p
 }
 
-// NewCredentialsClient returns a Credentials wrapper for retrieving credentials
+// NewCredentialsClient returns a pointer to a new Credentials object
-// from an arbitrary endpoint concurrently. The client will request the
+// wrapping the endpoint credentials Provider.
 func NewCredentialsClient(cfg aws.Config, handlers request.Handlers, endpoint string, options ...func(*Provider)) *credentials.Credentials {
 	return credentials.NewCredentials(NewProviderClient(cfg, handlers, endpoint, options...))
 }
@@ -111,7 +116,13 @@ func (p *Provider) IsExpired() bool {
 // 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()
+	return p.RetrieveWithContext(aws.BackgroundContext())
+}
+
+// RetrieveWithContext 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) RetrieveWithContext(ctx credentials.Context) (credentials.Value, error) {
+	resp, err := p.getCredentials(ctx)
 	if err != nil {
 		return credentials.Value{ProviderName: ProviderName},
 			awserr.New("CredentialsEndpointError", "failed to load credentials", err)
@@ -143,7 +154,7 @@ type errorOutput struct {
 	Message string `json:"message"`
 }
 
-func (p *Provider) getCredentials() (*getCredentialsOutput, error) {
+func (p *Provider) getCredentials(ctx aws.Context) (*getCredentialsOutput, error) {
 	op := &request.Operation{
 		Name:       "GetCredentials",
 		HTTPMethod: "GET",
@@ -151,7 +162,11 @@ func (p *Provider) getCredentials() (*getCredentialsOutput, error) {
 
 	out := &getCredentialsOutput{}
 	req := p.Client.NewRequest(op, nil, out)
+	req.SetContext(ctx)
 	req.HTTPRequest.Header.Set("Accept", "application/json")
+	if authToken := p.AuthorizationToken; len(authToken) != 0 {
+		req.HTTPRequest.Header.Set("Authorization", authToken)
+	}
 
 	return out, req.Send()
 }
@@ -167,7 +182,7 @@ func unmarshalHandler(r *request.Request) {
 
 	out := r.Data.(*getCredentialsOutput)
 	if err := json.NewDecoder(r.HTTPResponse.Body).Decode(&out); err != nil {
-		r.Error = awserr.New("SerializationError",
+		r.Error = awserr.New(request.ErrCodeSerialization,
 			"failed to decode endpoint credentials",
 			err,
 		)
@@ -178,11 +193,15 @@ func unmarshalError(r *request.Request) {
 	defer r.HTTPResponse.Body.Close()
 
 	var errOut errorOutput
-	if err := json.NewDecoder(r.HTTPResponse.Body).Decode(&errOut); err != nil {
+	err := jsonutil.UnmarshalJSONError(&errOut, r.HTTPResponse.Body)
-		r.Error = awserr.New("SerializationError",
+	if err != nil {
-			"failed to decode endpoint credentials",
+		r.Error = awserr.NewRequestFailure(
-			err,
+			awserr.New(request.ErrCodeSerialization,
+				"failed to decode error message", err),
+			r.HTTPResponse.StatusCode,
+			r.RequestID,
 		)
+		return
 	}
 
 	// Response body format is not consistent between metadata endpoints.

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

@@ -12,14 +12,10 @@ const EnvProviderName = "EnvProvider"
 var (
 	// ErrAccessKeyIDNotFound is returned when the AWS Access Key ID can't be
 	// found in the process's environment.
-	//
-	// @readonly
 	ErrAccessKeyIDNotFound = awserr.New("EnvAccessKeyNotFound", "AWS_ACCESS_KEY_ID or AWS_ACCESS_KEY not found in environment", nil)
 
 	// ErrSecretAccessKeyNotFound is returned when the AWS Secret Access Key
 	// can't be found in the process's environment.
-	//
-	// @readonly
 	ErrSecretAccessKeyNotFound = awserr.New("EnvSecretNotFound", "AWS_SECRET_ACCESS_KEY or AWS_SECRET_KEY not found in environment", nil)
 )
 

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

@@ -0,0 +1,426 @@
+/*
+Package processcreds is a credential Provider to retrieve `credential_process`
+credentials.
+
+WARNING: The following describes a method of sourcing credentials from an external
+process. This can potentially be dangerous, so proceed with caution. Other
+credential providers should be preferred if at all possible. If using this
+option, you should make sure that the config file is as locked down as possible
+using security best practices for your operating system.
+
+You can use credentials from a `credential_process` in a variety of ways.
+
+One way is to setup your shared config file, located in the default
+location, with the `credential_process` key and the command you want to be
+called. You also need to set the AWS_SDK_LOAD_CONFIG environment variable
+(e.g., `export AWS_SDK_LOAD_CONFIG=1`) to use the shared config file.
+
+    [default]
+    credential_process = /command/to/call
+
+Creating a new session will use the credential process to retrieve credentials.
+NOTE: If there are credentials in the profile you are using, the credential
+process will not be used.
+
+    // Initialize a session to load credentials.
+    sess, _ := session.NewSession(&aws.Config{
+        Region: aws.String("us-east-1")},
+    )
+
+    // Create S3 service client to use the credentials.
+    svc := s3.New(sess)
+
+Another way to use the `credential_process` method is by using
+`credentials.NewCredentials()` and providing a command to be executed to
+retrieve credentials:
+
+    // Create credentials using the ProcessProvider.
+    creds := processcreds.NewCredentials("/path/to/command")
+
+    // Create service client value configured for credentials.
+    svc := s3.New(sess, &aws.Config{Credentials: creds})
+
+You can set a non-default timeout for the `credential_process` with another
+constructor, `credentials.NewCredentialsTimeout()`, providing the timeout. To
+set a one minute timeout:
+
+    // Create credentials using the ProcessProvider.
+    creds := processcreds.NewCredentialsTimeout(
+        "/path/to/command",
+        time.Duration(500) * time.Millisecond)
+
+If you need more control, you can set any configurable options in the
+credentials using one or more option functions. For example, you can set a two
+minute timeout, a credential duration of 60 minutes, and a maximum stdout
+buffer size of 2k.
+
+    creds := processcreds.NewCredentials(
+        "/path/to/command",
+        func(opt *ProcessProvider) {
+            opt.Timeout = time.Duration(2) * time.Minute
+            opt.Duration = time.Duration(60) * time.Minute
+            opt.MaxBufSize = 2048
+        })
+
+You can also use your own `exec.Cmd`:
+
+	// Create an exec.Cmd
+	myCommand := exec.Command("/path/to/command")
+
+	// Create credentials using your exec.Cmd and custom timeout
+	creds := processcreds.NewCredentialsCommand(
+		myCommand,
+		func(opt *processcreds.ProcessProvider) {
+			opt.Timeout = time.Duration(1) * time.Second
+		})
+*/
+package processcreds
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"runtime"
+	"strings"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/internal/sdkio"
+)
+
+const (
+	// ProviderName is the name this credentials provider will label any
+	// returned credentials Value with.
+	ProviderName = `ProcessProvider`
+
+	// ErrCodeProcessProviderParse error parsing process output
+	ErrCodeProcessProviderParse = "ProcessProviderParseError"
+
+	// ErrCodeProcessProviderVersion version error in output
+	ErrCodeProcessProviderVersion = "ProcessProviderVersionError"
+
+	// ErrCodeProcessProviderRequired required attribute missing in output
+	ErrCodeProcessProviderRequired = "ProcessProviderRequiredError"
+
+	// ErrCodeProcessProviderExecution execution of command failed
+	ErrCodeProcessProviderExecution = "ProcessProviderExecutionError"
+
+	// errMsgProcessProviderTimeout process took longer than allowed
+	errMsgProcessProviderTimeout = "credential process timed out"
+
+	// errMsgProcessProviderProcess process error
+	errMsgProcessProviderProcess = "error in credential_process"
+
+	// errMsgProcessProviderParse problem parsing output
+	errMsgProcessProviderParse = "parse failed of credential_process output"
+
+	// errMsgProcessProviderVersion version error in output
+	errMsgProcessProviderVersion = "wrong version in process output (not 1)"
+
+	// errMsgProcessProviderMissKey missing access key id in output
+	errMsgProcessProviderMissKey = "missing AccessKeyId in process output"
+
+	// errMsgProcessProviderMissSecret missing secret acess key in output
+	errMsgProcessProviderMissSecret = "missing SecretAccessKey in process output"
+
+	// errMsgProcessProviderPrepareCmd prepare of command failed
+	errMsgProcessProviderPrepareCmd = "failed to prepare command"
+
+	// errMsgProcessProviderEmptyCmd command must not be empty
+	errMsgProcessProviderEmptyCmd = "command must not be empty"
+
+	// errMsgProcessProviderPipe failed to initialize pipe
+	errMsgProcessProviderPipe = "failed to initialize pipe"
+
+	// DefaultDuration is the default amount of time in minutes that the
+	// credentials will be valid for.
+	DefaultDuration = time.Duration(15) * time.Minute
+
+	// DefaultBufSize limits buffer size from growing to an enormous
+	// amount due to a faulty process.
+	DefaultBufSize = int(8 * sdkio.KibiByte)
+
+	// DefaultTimeout default limit on time a process can run.
+	DefaultTimeout = time.Duration(1) * time.Minute
+)
+
+// ProcessProvider satisfies the credentials.Provider interface, and is a
+// client to retrieve credentials from a process.
+type ProcessProvider struct {
+	staticCreds bool
+	credentials.Expiry
+	originalCommand []string
+
+	// Expiry duration of the credentials. Defaults to 15 minutes if not set.
+	Duration time.Duration
+
+	// 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
+
+	// A string representing an os command that should return a JSON with
+	// credential information.
+	command *exec.Cmd
+
+	// MaxBufSize limits memory usage from growing to an enormous
+	// amount due to a faulty process.
+	MaxBufSize int
+
+	// Timeout limits the time a process can run.
+	Timeout time.Duration
+}
+
+// NewCredentials returns a pointer to a new Credentials object wrapping the
+// ProcessProvider. The credentials will expire every 15 minutes by default.
+func NewCredentials(command string, options ...func(*ProcessProvider)) *credentials.Credentials {
+	p := &ProcessProvider{
+		command:    exec.Command(command),
+		Duration:   DefaultDuration,
+		Timeout:    DefaultTimeout,
+		MaxBufSize: DefaultBufSize,
+	}
+
+	for _, option := range options {
+		option(p)
+	}
+
+	return credentials.NewCredentials(p)
+}
+
+// NewCredentialsTimeout returns a pointer to a new Credentials object with
+// the specified command and timeout, and default duration and max buffer size.
+func NewCredentialsTimeout(command string, timeout time.Duration) *credentials.Credentials {
+	p := NewCredentials(command, func(opt *ProcessProvider) {
+		opt.Timeout = timeout
+	})
+
+	return p
+}
+
+// NewCredentialsCommand returns a pointer to a new Credentials object with
+// the specified command, and default timeout, duration and max buffer size.
+func NewCredentialsCommand(command *exec.Cmd, options ...func(*ProcessProvider)) *credentials.Credentials {
+	p := &ProcessProvider{
+		command:    command,
+		Duration:   DefaultDuration,
+		Timeout:    DefaultTimeout,
+		MaxBufSize: DefaultBufSize,
+	}
+
+	for _, option := range options {
+		option(p)
+	}
+
+	return credentials.NewCredentials(p)
+}
+
+type credentialProcessResponse struct {
+	Version         int
+	AccessKeyID     string `json:"AccessKeyId"`
+	SecretAccessKey string
+	SessionToken    string
+	Expiration      *time.Time
+}
+
+// Retrieve executes the 'credential_process' and returns the credentials.
+func (p *ProcessProvider) Retrieve() (credentials.Value, error) {
+	out, err := p.executeCredentialProcess()
+	if err != nil {
+		return credentials.Value{ProviderName: ProviderName}, err
+	}
+
+	// Serialize and validate response
+	resp := &credentialProcessResponse{}
+	if err = json.Unmarshal(out, resp); err != nil {
+		return credentials.Value{ProviderName: ProviderName}, awserr.New(
+			ErrCodeProcessProviderParse,
+			fmt.Sprintf("%s: %s", errMsgProcessProviderParse, string(out)),
+			err)
+	}
+
+	if resp.Version != 1 {
+		return credentials.Value{ProviderName: ProviderName}, awserr.New(
+			ErrCodeProcessProviderVersion,
+			errMsgProcessProviderVersion,
+			nil)
+	}
+
+	if len(resp.AccessKeyID) == 0 {
+		return credentials.Value{ProviderName: ProviderName}, awserr.New(
+			ErrCodeProcessProviderRequired,
+			errMsgProcessProviderMissKey,
+			nil)
+	}
+
+	if len(resp.SecretAccessKey) == 0 {
+		return credentials.Value{ProviderName: ProviderName}, awserr.New(
+			ErrCodeProcessProviderRequired,
+			errMsgProcessProviderMissSecret,
+			nil)
+	}
+
+	// Handle expiration
+	p.staticCreds = resp.Expiration == nil
+	if resp.Expiration != nil {
+		p.SetExpiration(*resp.Expiration, p.ExpiryWindow)
+	}
+
+	return credentials.Value{
+		ProviderName:    ProviderName,
+		AccessKeyID:     resp.AccessKeyID,
+		SecretAccessKey: resp.SecretAccessKey,
+		SessionToken:    resp.SessionToken,
+	}, nil
+}
+
+// IsExpired returns true if the credentials retrieved are expired, or not yet
+// retrieved.
+func (p *ProcessProvider) IsExpired() bool {
+	if p.staticCreds {
+		return false
+	}
+	return p.Expiry.IsExpired()
+}
+
+// prepareCommand prepares the command to be executed.
+func (p *ProcessProvider) prepareCommand() error {
+
+	var cmdArgs []string
+	if runtime.GOOS == "windows" {
+		cmdArgs = []string{"cmd.exe", "/C"}
+	} else {
+		cmdArgs = []string{"sh", "-c"}
+	}
+
+	if len(p.originalCommand) == 0 {
+		p.originalCommand = make([]string, len(p.command.Args))
+		copy(p.originalCommand, p.command.Args)
+
+		// check for empty command because it succeeds
+		if len(strings.TrimSpace(p.originalCommand[0])) < 1 {
+			return awserr.New(
+				ErrCodeProcessProviderExecution,
+				fmt.Sprintf(
+					"%s: %s",
+					errMsgProcessProviderPrepareCmd,
+					errMsgProcessProviderEmptyCmd),
+				nil)
+		}
+	}
+
+	cmdArgs = append(cmdArgs, p.originalCommand...)
+	p.command = exec.Command(cmdArgs[0], cmdArgs[1:]...)
+	p.command.Env = os.Environ()
+
+	return nil
+}
+
+// executeCredentialProcess starts the credential process on the OS and
+// returns the results or an error.
+func (p *ProcessProvider) executeCredentialProcess() ([]byte, error) {
+
+	if err := p.prepareCommand(); err != nil {
+		return nil, err
+	}
+
+	// Setup the pipes
+	outReadPipe, outWritePipe, err := os.Pipe()
+	if err != nil {
+		return nil, awserr.New(
+			ErrCodeProcessProviderExecution,
+			errMsgProcessProviderPipe,
+			err)
+	}
+
+	p.command.Stderr = os.Stderr    // display stderr on console for MFA
+	p.command.Stdout = outWritePipe // get creds json on process's stdout
+	p.command.Stdin = os.Stdin      // enable stdin for MFA
+
+	output := bytes.NewBuffer(make([]byte, 0, p.MaxBufSize))
+
+	stdoutCh := make(chan error, 1)
+	go readInput(
+		io.LimitReader(outReadPipe, int64(p.MaxBufSize)),
+		output,
+		stdoutCh)
+
+	execCh := make(chan error, 1)
+	go executeCommand(*p.command, execCh)
+
+	finished := false
+	var errors []error
+	for !finished {
+		select {
+		case readError := <-stdoutCh:
+			errors = appendError(errors, readError)
+			finished = true
+		case execError := <-execCh:
+			err := outWritePipe.Close()
+			errors = appendError(errors, err)
+			errors = appendError(errors, execError)
+			if errors != nil {
+				return output.Bytes(), awserr.NewBatchError(
+					ErrCodeProcessProviderExecution,
+					errMsgProcessProviderProcess,
+					errors)
+			}
+		case <-time.After(p.Timeout):
+			finished = true
+			return output.Bytes(), awserr.NewBatchError(
+				ErrCodeProcessProviderExecution,
+				errMsgProcessProviderTimeout,
+				errors) // errors can be nil
+		}
+	}
+
+	out := output.Bytes()
+
+	if runtime.GOOS == "windows" {
+		// windows adds slashes to quotes
+		out = []byte(strings.Replace(string(out), `\"`, `"`, -1))
+	}
+
+	return out, nil
+}
+
+// appendError conveniently checks for nil before appending slice
+func appendError(errors []error, err error) []error {
+	if err != nil {
+		return append(errors, err)
+	}
+	return errors
+}
+
+func executeCommand(cmd exec.Cmd, exec chan error) {
+	// Start the command
+	err := cmd.Start()
+	if err == nil {
+		err = cmd.Wait()
+	}
+
+	exec <- err
+}
+
+func readInput(r io.Reader, w io.Writer, read chan error) {
+	tee := io.TeeReader(r, w)
+
+	_, err := ioutil.ReadAll(tee)
+
+	if err == io.EOF {
+		err = nil
+	}
+
+	read <- err // will only arrive here when write end of pipe is closed
+}

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

@@ -4,9 +4,8 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/go-ini/ini"
-
 	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/internal/ini"
 	"github.com/aws/aws-sdk-go/internal/shareddefaults"
 )
 
@@ -18,8 +17,9 @@ var (
 	ErrSharedCredentialsHomeNotFound = awserr.New("UserHomeNotFound", "user home directory not found.", nil)
 )
 
-// A SharedCredentialsProvider retrieves credentials from the current user's home
+// A SharedCredentialsProvider retrieves access key pair (access key ID,
-// directory, and keeps track if those credentials are expired.
+// secret access key, and session token if present) credentials from the current
+// user's home directory, and keeps track if those credentials are expired.
 //
 // Profile ini file example: $HOME/.aws/credentials
 type SharedCredentialsProvider struct {
@@ -77,36 +77,37 @@ func (p *SharedCredentialsProvider) IsExpired() bool {
 // The credentials retrieved from the profile will be returned or error. Error will be
 // returned if it fails to read from the file, or the data is invalid.
 func loadProfile(filename, profile string) (Value, error) {
-	config, err := ini.Load(filename)
+	config, err := ini.OpenFile(filename)
 	if err != nil {
 		return Value{ProviderName: SharedCredsProviderName}, awserr.New("SharedCredsLoad", "failed to load shared credentials file", err)
 	}
-	iniProfile, err := config.GetSection(profile)
+
-	if err != nil {
+	iniProfile, ok := config.GetSection(profile)
-		return Value{ProviderName: SharedCredsProviderName}, awserr.New("SharedCredsLoad", "failed to get profile", err)
+	if !ok {
+		return Value{ProviderName: SharedCredsProviderName}, awserr.New("SharedCredsLoad", "failed to get profile", nil)
 	}
 
-	id, err := iniProfile.GetKey("aws_access_key_id")
+	id := iniProfile.String("aws_access_key_id")
-	if err != nil {
+	if len(id) == 0 {
 		return Value{ProviderName: SharedCredsProviderName}, awserr.New("SharedCredsAccessKey",
 			fmt.Sprintf("shared credentials %s in %s did not contain aws_access_key_id", profile, filename),
-			err)
+			nil)
 	}
 
-	secret, err := iniProfile.GetKey("aws_secret_access_key")
+	secret := iniProfile.String("aws_secret_access_key")
-	if err != nil {
+	if len(secret) == 0 {
 		return Value{ProviderName: SharedCredsProviderName}, awserr.New("SharedCredsSecret",
 			fmt.Sprintf("shared credentials %s in %s did not contain aws_secret_access_key", profile, filename),
 			nil)
 	}
 
 	// Default to empty string if not found
-	token := iniProfile.Key("aws_session_token")
+	token := iniProfile.String("aws_session_token")
 
 	return Value{
-		AccessKeyID:     id.String(),
+		AccessKeyID:     id,
-		SecretAccessKey: secret.String(),
+		SecretAccessKey: secret,
-		SessionToken:    token.String(),
+		SessionToken:    token,
 		ProviderName:    SharedCredsProviderName,
 	}, nil
 }

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

@@ -9,8 +9,6 @@ const StaticProviderName = "StaticProvider"
 
 var (
 	// ErrStaticCredentialsEmpty is emitted when static credentials are empty.
-	//
-	// @readonly
 	ErrStaticCredentialsEmpty = awserr.New("EmptyStaticCreds", "static credentials are empty", nil)
 )
 
@@ -21,7 +19,9 @@ type StaticProvider struct {
 }
 
 // NewStaticCredentials returns a pointer to a new Credentials object
-// wrapping a static credentials value provider.
+// wrapping a static credentials value provider. Token is only required
+// for temporary security credentials retrieved via STS, otherwise an empty
+// string can be passed for this parameter.
 func NewStaticCredentials(id, secret, token string) *Credentials {
 	return NewCredentials(&StaticProvider{Value: Value{
 		AccessKeyID:     id,

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

@@ -80,16 +80,19 @@ package stscreds
 
 import (
 	"fmt"
+	"os"
 	"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/credentials"
+	"github.com/aws/aws-sdk-go/aws/request"
+	"github.com/aws/aws-sdk-go/internal/sdkrand"
 	"github.com/aws/aws-sdk-go/service/sts"
 )
 
-// StdinTokenProvider will prompt on stdout and read from stdin for a string value.
+// StdinTokenProvider will prompt on stderr and read from stdin for a string value.
 // An error is returned if reading from stdin fails.
 //
 // Use this function go read MFA tokens from stdin. The function makes no attempt
@@ -102,7 +105,7 @@ import (
 // Will wait forever until something is provided on the stdin.
 func StdinTokenProvider() (string, error) {
 	var v string
-	fmt.Printf("Assume Role MFA token code: ")
+	fmt.Fprintf(os.Stderr, "Assume Role MFA token code: ")
 	_, err := fmt.Scanln(&v)
 
 	return v, err
@@ -116,6 +119,10 @@ type AssumeRoler interface {
 	AssumeRole(input *sts.AssumeRoleInput) (*sts.AssumeRoleOutput, error)
 }
 
+type assumeRolerWithContext interface {
+	AssumeRoleWithContext(aws.Context, *sts.AssumeRoleInput, ...request.Option) (*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
@@ -142,6 +149,13 @@ type AssumeRoleProvider struct {
 	// Session name, if you wish to reuse the credentials elsewhere.
 	RoleSessionName string
 
+	// Optional, you can pass tag key-value pairs to your session. These tags are called session tags.
+	Tags []*sts.Tag
+
+	// A list of keys for session tags that you want to set as transitive.
+	// If you set a tag key as transitive, the corresponding key and value passes to subsequent sessions in a role chain.
+	TransitiveTagKeys []*string
+
 	// Expiry duration of the STS credentials. Defaults to 15 minutes if not set.
 	Duration time.Duration
 
@@ -155,6 +169,29 @@ type AssumeRoleProvider struct {
 	// size.
 	Policy *string
 
+	// The ARNs of IAM managed policies you want to use as managed session policies.
+	// The policies must exist in the same account as the role.
+	//
+	// This parameter is optional. You can provide up to 10 managed policy ARNs.
+	// However, the plain text that you use for both inline and managed session
+	// policies can't exceed 2,048 characters.
+	//
+	// An AWS conversion compresses the passed session policies and session tags
+	// into a packed binary format that has a separate limit. Your request can fail
+	// for this limit even if your plain text meets the other requirements. The
+	// PackedPolicySize response element indicates by percentage how close the policies
+	// and tags for your request are to the upper size limit.
+	//
+	// Passing policies to this operation returns new temporary credentials. The
+	// resulting session's permissions are the intersection of the role's identity-based
+	// policy and the session policies. You can use the role's temporary credentials
+	// in subsequent AWS API calls to access resources in the account that owns
+	// the role. You cannot use session policies to grant more permissions than
+	// those allowed by the identity-based policy of the role that is being assumed.
+	// For more information, see Session Policies (https://docs.aws.amazon.com/IAM/latest/UserGuide/access_policies.html#policies_session)
+	// in the IAM User Guide.
+	PolicyArns []*sts.PolicyDescriptorType
+
 	// 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.
@@ -193,6 +230,18 @@ type AssumeRoleProvider struct {
 	//
 	// If ExpiryWindow is 0 or less it will be ignored.
 	ExpiryWindow time.Duration
+
+	// MaxJitterFrac reduces the effective Duration of each credential requested
+	// by a random percentage between 0 and MaxJitterFraction. MaxJitterFrac must
+	// have a value between 0 and 1. Any other value may lead to expected behavior.
+	// With a MaxJitterFrac value of 0, default) will no jitter will be used.
+	//
+	// For example, with a Duration of 30m and a MaxJitterFrac of 0.1, the
+	// AssumeRole call will be made with an arbitrary Duration between 27m and
+	// 30m.
+	//
+	// MaxJitterFrac should not be negative.
+	MaxJitterFrac float64
 }
 
 // NewCredentials returns a pointer to a new Credentials object wrapping the
@@ -244,7 +293,11 @@ func NewCredentialsWithClient(svc AssumeRoler, roleARN string, options ...func(*
 
 // Retrieve generates a new set of temporary credentials using STS.
 func (p *AssumeRoleProvider) Retrieve() (credentials.Value, error) {
+	return p.RetrieveWithContext(aws.BackgroundContext())
+}
 
+// RetrieveWithContext generates a new set of temporary credentials using STS.
+func (p *AssumeRoleProvider) RetrieveWithContext(ctx credentials.Context) (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.
@@ -254,11 +307,15 @@ func (p *AssumeRoleProvider) Retrieve() (credentials.Value, error) {
 		// Expire as often as AWS permits.
 		p.Duration = DefaultDuration
 	}
+	jitter := time.Duration(sdkrand.SeededRand.Float64() * p.MaxJitterFrac * float64(p.Duration))
 	input := &sts.AssumeRoleInput{
-		DurationSeconds: aws.Int64(int64(p.Duration / time.Second)),
+		DurationSeconds:   aws.Int64(int64((p.Duration - jitter) / time.Second)),
-		RoleArn:         aws.String(p.RoleARN),
+		RoleArn:           aws.String(p.RoleARN),
-		RoleSessionName: aws.String(p.RoleSessionName),
+		RoleSessionName:   aws.String(p.RoleSessionName),
-		ExternalId:      p.ExternalID,
+		ExternalId:        p.ExternalID,
+		Tags:              p.Tags,
+		PolicyArns:        p.PolicyArns,
+		TransitiveTagKeys: p.TransitiveTagKeys,
 	}
 	if p.Policy != nil {
 		input.Policy = p.Policy
@@ -281,7 +338,15 @@ func (p *AssumeRoleProvider) Retrieve() (credentials.Value, error) {
 		}
 	}
 
-	roleOutput, err := p.Client.AssumeRole(input)
+	var roleOutput *sts.AssumeRoleOutput
+	var err error
+
+	if c, ok := p.Client.(assumeRolerWithContext); ok {
+		roleOutput, err = c.AssumeRoleWithContext(ctx, input)
+	} else {
+		roleOutput, err = p.Client.AssumeRole(input)
+	}
+
 	if err != nil {
 		return credentials.Value{ProviderName: ProviderName}, err
 	}

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

@@ -0,0 +1,154 @@
+package stscreds
+
+import (
+	"fmt"
+	"io/ioutil"
+	"strconv"
+	"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/credentials"
+	"github.com/aws/aws-sdk-go/service/sts"
+	"github.com/aws/aws-sdk-go/service/sts/stsiface"
+)
+
+const (
+	// ErrCodeWebIdentity will be used as an error code when constructing
+	// a new error to be returned during session creation or retrieval.
+	ErrCodeWebIdentity = "WebIdentityErr"
+
+	// WebIdentityProviderName is the web identity provider name
+	WebIdentityProviderName = "WebIdentityCredentials"
+)
+
+// now is used to return a time.Time object representing
+// the current time. This can be used to easily test and
+// compare test values.
+var now = time.Now
+
+// TokenFetcher shuold return WebIdentity token bytes or an error
+type TokenFetcher interface {
+	FetchToken(credentials.Context) ([]byte, error)
+}
+
+// FetchTokenPath is a path to a WebIdentity token file
+type FetchTokenPath string
+
+// FetchToken returns a token by reading from the filesystem
+func (f FetchTokenPath) FetchToken(ctx credentials.Context) ([]byte, error) {
+	data, err := ioutil.ReadFile(string(f))
+	if err != nil {
+		errMsg := fmt.Sprintf("unable to read file at %s", f)
+		return nil, awserr.New(ErrCodeWebIdentity, errMsg, err)
+	}
+	return data, nil
+}
+
+// WebIdentityRoleProvider is used to retrieve credentials using
+// an OIDC token.
+type WebIdentityRoleProvider struct {
+	credentials.Expiry
+	PolicyArns []*sts.PolicyDescriptorType
+
+	// Duration the STS credentials will be valid for. Truncated to seconds.
+	// If unset, the assumed role will use AssumeRoleWithWebIdentity's default
+	// expiry duration. See
+	// https://docs.aws.amazon.com/sdk-for-go/api/service/sts/#STS.AssumeRoleWithWebIdentity
+	// for more information.
+	Duration time.Duration
+
+	// The amount of time the credentials will be refreshed before they expire.
+	// This is useful refresh credentials before they expire to reduce risk of
+	// using credentials as they expire. If unset, will default to no expiry
+	// window.
+	ExpiryWindow time.Duration
+
+	client stsiface.STSAPI
+
+	tokenFetcher    TokenFetcher
+	roleARN         string
+	roleSessionName string
+}
+
+// NewWebIdentityCredentials will return a new set of credentials with a given
+// configuration, role arn, and token file path.
+func NewWebIdentityCredentials(c client.ConfigProvider, roleARN, roleSessionName, path string) *credentials.Credentials {
+	svc := sts.New(c)
+	p := NewWebIdentityRoleProvider(svc, roleARN, roleSessionName, path)
+	return credentials.NewCredentials(p)
+}
+
+// NewWebIdentityRoleProvider will return a new WebIdentityRoleProvider with the
+// provided stsiface.STSAPI
+func NewWebIdentityRoleProvider(svc stsiface.STSAPI, roleARN, roleSessionName, path string) *WebIdentityRoleProvider {
+	return NewWebIdentityRoleProviderWithToken(svc, roleARN, roleSessionName, FetchTokenPath(path))
+}
+
+// NewWebIdentityRoleProviderWithToken will return a new WebIdentityRoleProvider with the
+// provided stsiface.STSAPI and a TokenFetcher
+func NewWebIdentityRoleProviderWithToken(svc stsiface.STSAPI, roleARN, roleSessionName string, tokenFetcher TokenFetcher) *WebIdentityRoleProvider {
+	return &WebIdentityRoleProvider{
+		client:          svc,
+		tokenFetcher:    tokenFetcher,
+		roleARN:         roleARN,
+		roleSessionName: roleSessionName,
+	}
+}
+
+// Retrieve will attempt to assume a role from a token which is located at
+// 'WebIdentityTokenFilePath' specified destination and if that is empty an
+// error will be returned.
+func (p *WebIdentityRoleProvider) Retrieve() (credentials.Value, error) {
+	return p.RetrieveWithContext(aws.BackgroundContext())
+}
+
+// RetrieveWithContext will attempt to assume a role from a token which is located at
+// 'WebIdentityTokenFilePath' specified destination and if that is empty an
+// error will be returned.
+func (p *WebIdentityRoleProvider) RetrieveWithContext(ctx credentials.Context) (credentials.Value, error) {
+	b, err := p.tokenFetcher.FetchToken(ctx)
+	if err != nil {
+		return credentials.Value{}, awserr.New(ErrCodeWebIdentity, "failed fetching WebIdentity token: ", err)
+	}
+
+	sessionName := p.roleSessionName
+	if len(sessionName) == 0 {
+		// session name is used to uniquely identify a session. This simply
+		// uses unix time in nanoseconds to uniquely identify sessions.
+		sessionName = strconv.FormatInt(now().UnixNano(), 10)
+	}
+
+	var duration *int64
+	if p.Duration != 0 {
+		duration = aws.Int64(int64(p.Duration / time.Second))
+	}
+
+	req, resp := p.client.AssumeRoleWithWebIdentityRequest(&sts.AssumeRoleWithWebIdentityInput{
+		PolicyArns:       p.PolicyArns,
+		RoleArn:          &p.roleARN,
+		RoleSessionName:  &sessionName,
+		WebIdentityToken: aws.String(string(b)),
+		DurationSeconds:  duration,
+	})
+
+	req.SetContext(ctx)
+
+	// InvalidIdentityToken error is a temporary error that can occur
+	// when assuming an Role with a JWT web identity token.
+	req.RetryErrorCodes = append(req.RetryErrorCodes, sts.ErrCodeInvalidIdentityTokenException)
+	if err := req.Send(); err != nil {
+		return credentials.Value{}, awserr.New(ErrCodeWebIdentity, "failed to retrieve credentials", err)
+	}
+
+	p.SetExpiration(aws.TimeValue(resp.Credentials.Expiration), p.ExpiryWindow)
+
+	value := credentials.Value{
+		AccessKeyID:     aws.StringValue(resp.Credentials.AccessKeyId),
+		SecretAccessKey: aws.StringValue(resp.Credentials.SecretAccessKey),
+		SessionToken:    aws.StringValue(resp.Credentials.SessionToken),
+		ProviderName:    WebIdentityProviderName,
+	}
+	return value, nil
+}

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

@@ -1,30 +1,61 @@
-// Package csm provides Client Side Monitoring (CSM) which enables sending metrics
+// Package csm provides the Client Side Monitoring (CSM) client which enables
-// via UDP connection. Using the Start function will enable the reporting of
+// sending metrics via UDP connection to the CSM agent. This package provides
-// metrics on a given port. If Start is called, with different parameters, again,
+// control options, and configuration for the CSM client. The client can be
-// a panic will occur.
+// controlled manually, or automatically via the SDK's Session configuration.
 //
-// Pause can be called to pause any metrics publishing on a given port. Sessions
+// Enabling CSM client via SDK's Session configuration
-// that have had their handlers modified via InjectHandlers may still be used.
+//
-// However, the handlers will act as a no-op meaning no metrics will be published.
+// The CSM client can be enabled automatically via SDK's Session configuration.
+// The SDK's session configuration enables the CSM client if the AWS_CSM_PORT
+// environment variable is set to a non-empty value.
+//
+// The configuration options for the CSM client via the SDK's session
+// configuration are:
+//
+//	* AWS_CSM_PORT=<port number>
+//	  The port number the CSM agent will receive metrics on.
+//
+//	* AWS_CSM_HOST=<hostname or ip>
+//	  The hostname, or IP address the CSM agent will receive metrics on.
+//	  Without port number.
+//
+// Manually enabling the CSM client
+//
+// The CSM client can be started, paused, and resumed manually. The Start
+// function will enable the CSM client to publish metrics to the CSM agent. It
+// is safe to call Start concurrently, but if Start is called additional times
+// with different ClientID or address it will panic.
 //
-//	Example:
 //		r, err := csm.Start("clientID", ":31000")
 //		if err != nil {
 //			panic(fmt.Errorf("failed starting CSM:  %v", err))
 //		}
 //
+// When controlling the CSM client manually, you must also inject its request
+// handlers into the SDK's Session configuration for the SDK's API clients to
+// publish metrics.
+//
 //		sess, err := session.NewSession(&aws.Config{})
 //		if err != nil {
 //			panic(fmt.Errorf("failed loading session: %v", err))
 //		}
 //
+//		// Add CSM client's metric publishing request handlers to the SDK's
+//		// Session Configuration.
 //		r.InjectHandlers(&sess.Handlers)
 //
-//		client := s3.New(sess)
+// Controlling CSM client
-//		resp, err := client.GetObject(&s3.GetObjectInput{
+//
-//			Bucket: aws.String("bucket"),
+// Once the CSM client has been enabled the Get function will return a Reporter
-//			Key: aws.String("key"),
+// value that you can use to pause and resume the metrics published to the CSM
-//		})
+// agent. If Get function is called before the reporter is enabled with the
+// Start function or via SDK's Session configuration nil will be returned.
+//
+// The Pause method can be called to stop the CSM client publishing metrics to
+// the CSM agent. The Continue method will resume metric publishing.
+//
+//		// Get the CSM client Reporter.
+//		r := csm.Get()
 //
 //		// Will pause monitoring
 //		r.Pause()
@@ -35,12 +66,4 @@
 //
 //		// Resume monitoring
 //		r.Continue()
-//
-// Start returns a Reporter that is used to enable or disable monitoring. If
-// access to the Reporter is required later, calling Get will return the Reporter
-// singleton.
-//
-//	Example:
-//		r := csm.Get()
-//		r.Continue()
 package csm

vendor/github.com/aws/aws-sdk-go/aws/csm/enable.go

@@ -2,6 +2,7 @@ package csm
 
 import (
 	"fmt"
+	"strings"
 	"sync"
 )
 
@@ -9,19 +10,40 @@ var (
 	lock sync.Mutex
 )
 
-// Client side metric handler names
 const (
-	APICallMetricHandlerName        = "awscsm.SendAPICallMetric"
+	// DefaultPort is used when no port is specified.
-	APICallAttemptMetricHandlerName = "awscsm.SendAPICallAttemptMetric"
+	DefaultPort = "31000"
+
+	// DefaultHost is the host that will be used when none is specified.
+	DefaultHost = "127.0.0.1"
 )
 
-// Start will start the a long running go routine to capture
+// AddressWithDefaults returns a CSM address built from the host and port
+// values. If the host or port is not set, default values will be used
+// instead. If host is "localhost" it will be replaced with "127.0.0.1".
+func AddressWithDefaults(host, port string) string {
+	if len(host) == 0 || strings.EqualFold(host, "localhost") {
+		host = DefaultHost
+	}
+
+	if len(port) == 0 {
+		port = DefaultPort
+	}
+
+	// Only IP6 host can contain a colon
+	if strings.Contains(host, ":") {
+		return "[" + host + "]:" + port
+	}
+
+	return host + ":" + port
+}
+
+// Start will start a long running go routine to capture
 // client side metrics. Calling start multiple time will only
 // start the metric listener once and will panic if a different
 // client ID or port is passed in.
 //
-//	Example:
+//		r, err := csm.Start("clientID", "127.0.0.1:31000")
-//		r, err := csm.Start("clientID", "127.0.0.1:8094")
 //		if err != nil {
 //			panic(fmt.Errorf("expected no error, but received %v", err))
 //		}

vendor/github.com/aws/aws-sdk-go/aws/csm/metric.go

@@ -3,6 +3,8 @@ package csm
 import (
 	"strconv"
 	"time"
+
+	"github.com/aws/aws-sdk-go/aws"
 )
 
 type metricTime time.Time
@@ -39,6 +41,12 @@ type metric struct {
 	SDKException        *string `json:"SdkException,omitempty"`
 	SDKExceptionMessage *string `json:"SdkExceptionMessage,omitempty"`
 
+	FinalHTTPStatusCode      *int    `json:"FinalHttpStatusCode,omitempty"`
+	FinalAWSException        *string `json:"FinalAwsException,omitempty"`
+	FinalAWSExceptionMessage *string `json:"FinalAwsExceptionMessage,omitempty"`
+	FinalSDKException        *string `json:"FinalSdkException,omitempty"`
+	FinalSDKExceptionMessage *string `json:"FinalSdkExceptionMessage,omitempty"`
+
 	DestinationIP    *string `json:"DestinationIp,omitempty"`
 	ConnectionReused *int    `json:"ConnectionReused,omitempty"`
 
@@ -48,4 +56,54 @@ type metric struct {
 	DNSLatency               *int `json:"DnsLatency,omitempty"`
 	TCPLatency               *int `json:"TcpLatency,omitempty"`
 	SSLLatency               *int `json:"SslLatency,omitempty"`
+
+	MaxRetriesExceeded *int `json:"MaxRetriesExceeded,omitempty"`
+}
+
+func (m *metric) TruncateFields() {
+	m.ClientID = truncateString(m.ClientID, 255)
+	m.UserAgent = truncateString(m.UserAgent, 256)
+
+	m.AWSException = truncateString(m.AWSException, 128)
+	m.AWSExceptionMessage = truncateString(m.AWSExceptionMessage, 512)
+
+	m.SDKException = truncateString(m.SDKException, 128)
+	m.SDKExceptionMessage = truncateString(m.SDKExceptionMessage, 512)
+
+	m.FinalAWSException = truncateString(m.FinalAWSException, 128)
+	m.FinalAWSExceptionMessage = truncateString(m.FinalAWSExceptionMessage, 512)
+
+	m.FinalSDKException = truncateString(m.FinalSDKException, 128)
+	m.FinalSDKExceptionMessage = truncateString(m.FinalSDKExceptionMessage, 512)
+}
+
+func truncateString(v *string, l int) *string {
+	if v != nil && len(*v) > l {
+		nv := (*v)[:l]
+		return &nv
+	}
+
+	return v
+}
+
+func (m *metric) SetException(e metricException) {
+	switch te := e.(type) {
+	case awsException:
+		m.AWSException = aws.String(te.exception)
+		m.AWSExceptionMessage = aws.String(te.message)
+	case sdkException:
+		m.SDKException = aws.String(te.exception)
+		m.SDKExceptionMessage = aws.String(te.message)
+	}
+}
+
+func (m *metric) SetFinalException(e metricException) {
+	switch te := e.(type) {
+	case awsException:
+		m.FinalAWSException = aws.String(te.exception)
+		m.FinalAWSExceptionMessage = aws.String(te.message)
+	case sdkException:
+		m.FinalSDKException = aws.String(te.exception)
+		m.FinalSDKExceptionMessage = aws.String(te.message)
+	}
 }

vendor/github.com/aws/aws-sdk-go/aws/csm/metric_chan.go

@@ -16,25 +16,26 @@ var (
 
 type metricChan struct {
 	ch     chan metric
-	paused int64
+	paused *int64
 }
 
 func newMetricChan(size int) metricChan {
 	return metricChan{
-		ch: make(chan metric, size),
+		ch:     make(chan metric, size),
+		paused: new(int64),
 	}
 }
 
 func (ch *metricChan) Pause() {
-	atomic.StoreInt64(&ch.paused, pausedEnum)
+	atomic.StoreInt64(ch.paused, pausedEnum)
 }
 
 func (ch *metricChan) Continue() {
-	atomic.StoreInt64(&ch.paused, runningEnum)
+	atomic.StoreInt64(ch.paused, runningEnum)
 }
 
 func (ch *metricChan) IsPaused() bool {
-	v := atomic.LoadInt64(&ch.paused)
+	v := atomic.LoadInt64(ch.paused)
 	return v == pausedEnum
 }
 

vendor/github.com/aws/aws-sdk-go/aws/csm/metric_exception.go

@@ -0,0 +1,26 @@
+package csm
+
+type metricException interface {
+	Exception() string
+	Message() string
+}
+
+type requestException struct {
+	exception string
+	message   string
+}
+
+func (e requestException) Exception() string {
+	return e.exception
+}
+func (e requestException) Message() string {
+	return e.message
+}
+
+type awsException struct {
+	requestException
+}
+
+type sdkException struct {
+	requestException
+}

vendor/github.com/aws/aws-sdk-go/aws/csm/reporter.go

@@ -10,11 +10,6 @@ import (
 	"github.com/aws/aws-sdk-go/aws/request"
 )
 
-const (
-	// DefaultPort is used when no port is specified
-	DefaultPort = "31000"
-)
-
 // Reporter will gather metrics of API requests made and
 // send those metrics to the CSM endpoint.
 type Reporter struct {
@@ -71,7 +66,6 @@ func (rep *Reporter) sendAPICallAttemptMetric(r *request.Request) {
 
 		XAmzRequestID: aws.String(r.RequestID),
 
-		AttemptCount:   aws.Int(r.RetryCount + 1),
 		AttemptLatency: aws.Int(int(now.Sub(r.AttemptTime).Nanoseconds() / int64(time.Millisecond))),
 		AccessKey:      aws.String(creds.AccessKeyID),
 	}
@@ -82,26 +76,29 @@ func (rep *Reporter) sendAPICallAttemptMetric(r *request.Request) {
 
 	if r.Error != nil {
 		if awserr, ok := r.Error.(awserr.Error); ok {
-			setError(&m, awserr)
+			m.SetException(getMetricException(awserr))
 		}
 	}
 
+	m.TruncateFields()
 	rep.metricsCh.Push(m)
 }
 
-func setError(m *metric, err awserr.Error) {
+func getMetricException(err awserr.Error) metricException {
 	msg := err.Error()
 	code := err.Code()
 
 	switch code {
-	case "RequestError",
+	case request.ErrCodeRequestError,
-		"SerializationError",
+		request.ErrCodeSerialization,
 		request.CanceledErrorCode:
-		m.SDKException = &code
+		return sdkException{
-		m.SDKExceptionMessage = &msg
+			requestException{exception: code, message: msg},
+		}
 	default:
-		m.AWSException = &code
+		return awsException{
-		m.AWSExceptionMessage = &msg
+			requestException{exception: code, message: msg},
+		}
 	}
 }
 
@@ -112,16 +109,31 @@ func (rep *Reporter) sendAPICallMetric(r *request.Request) {
 
 	now := time.Now()
 	m := metric{
-		ClientID:      aws.String(rep.clientID),
+		ClientID:           aws.String(rep.clientID),
-		API:           aws.String(r.Operation.Name),
+		API:                aws.String(r.Operation.Name),
-		Service:       aws.String(r.ClientInfo.ServiceID),
+		Service:            aws.String(r.ClientInfo.ServiceID),
-		Timestamp:     (*metricTime)(&now),
+		Timestamp:          (*metricTime)(&now),
-		Type:          aws.String("ApiCall"),
+		UserAgent:          aws.String(r.HTTPRequest.Header.Get("User-Agent")),
-		AttemptCount:  aws.Int(r.RetryCount + 1),
+		Type:               aws.String("ApiCall"),
-		Latency:       aws.Int(int(time.Now().Sub(r.Time) / time.Millisecond)),
+		AttemptCount:       aws.Int(r.RetryCount + 1),
-		XAmzRequestID: aws.String(r.RequestID),
+		Region:             r.Config.Region,
+		Latency:            aws.Int(int(time.Since(r.Time) / time.Millisecond)),
+		XAmzRequestID:      aws.String(r.RequestID),
+		MaxRetriesExceeded: aws.Int(boolIntValue(r.RetryCount >= r.MaxRetries())),
 	}
 
+	if r.HTTPResponse != nil {
+		m.FinalHTTPStatusCode = aws.Int(r.HTTPResponse.StatusCode)
+	}
+
+	if r.Error != nil {
+		if awserr, ok := r.Error.(awserr.Error); ok {
+			m.SetFinalException(getMetricException(awserr))
+		}
+	}
+
+	m.TruncateFields()
+
 	// TODO: Probably want to figure something out for logging dropped
 	// metrics
 	rep.metricsCh.Push(m)
@@ -172,8 +184,9 @@ func (rep *Reporter) start() {
 	}
 }
 
-// Pause will pause the metric channel preventing any new metrics from
+// Pause will pause the metric channel preventing any new metrics from being
-// being added.
+// added. It is safe to call concurrently with other calls to Pause, but if
+// called concurently with Continue can lead to unexpected state.
 func (rep *Reporter) Pause() {
 	lock.Lock()
 	defer lock.Unlock()
@@ -185,8 +198,9 @@ func (rep *Reporter) Pause() {
 	rep.close()
 }
 
-// Continue will reopen the metric channel and allow for monitoring
+// Continue will reopen the metric channel and allow for monitoring to be
-// to be resumed.
+// resumed. It is safe to call concurrently with other calls to Continue, but
+// if called concurently with Pause can lead to unexpected state.
 func (rep *Reporter) Continue() {
 	lock.Lock()
 	defer lock.Unlock()
@@ -201,10 +215,18 @@ func (rep *Reporter) Continue() {
 	rep.metricsCh.Continue()
 }
 
+// Client side metric handler names
+const (
+	APICallMetricHandlerName        = "awscsm.SendAPICallMetric"
+	APICallAttemptMetricHandlerName = "awscsm.SendAPICallAttemptMetric"
+)
+
 // InjectHandlers will will enable client side metrics and inject the proper
 // handlers to handle how metrics are sent.
 //
-//	Example:
+// InjectHandlers is NOT safe to call concurrently. Calling InjectHandlers
+// multiple times may lead to unexpected behavior, (e.g. duplicate metrics).
+//
 //		// Start must be called in order to inject the correct handlers
 //		r, err := csm.Start("clientID", "127.0.0.1:8094")
 //		if err != nil {
@@ -221,11 +243,22 @@ func (rep *Reporter) InjectHandlers(handlers *request.Handlers) {
 		return
 	}
 
-	apiCallHandler := request.NamedHandler{Name: APICallMetricHandlerName, Fn: rep.sendAPICallMetric}
+	handlers.Complete.PushFrontNamed(request.NamedHandler{
-	apiCallAttemptHandler := request.NamedHandler{Name: APICallAttemptMetricHandlerName, Fn: rep.sendAPICallAttemptMetric}
+		Name: APICallMetricHandlerName,
+		Fn:   rep.sendAPICallMetric,
+	})
 
-	handlers.Complete.PushFrontNamed(apiCallHandler)
+	handlers.CompleteAttempt.PushFrontNamed(request.NamedHandler{
-	handlers.Complete.PushFrontNamed(apiCallAttemptHandler)
+		Name: APICallAttemptMetricHandlerName,
-
+		Fn:   rep.sendAPICallAttemptMetric,
-	handlers.AfterRetry.PushFrontNamed(apiCallAttemptHandler)
+	})
+}
+
+// boolIntValue return 1 for true and 0 for false.
+func boolIntValue(b bool) int {
+	if b {
+		return 1
+	}
+
+	return 0
 }

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

@@ -24,6 +24,7 @@ import (
 	"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/internal/shareddefaults"
 )
 
 // A Defaults provides a collection of default values for SDK clients.
@@ -112,8 +113,8 @@ func CredProviders(cfg *aws.Config, handlers request.Handlers) []credentials.Pro
 }
 
 const (
-	httpProviderEnvVar     = "AWS_CONTAINER_CREDENTIALS_FULL_URI"
+	httpProviderAuthorizationEnvVar = "AWS_CONTAINER_AUTHORIZATION_TOKEN"
-	ecsCredsProviderEnvVar = "AWS_CONTAINER_CREDENTIALS_RELATIVE_URI"
+	httpProviderEnvVar              = "AWS_CONTAINER_CREDENTIALS_FULL_URI"
 )
 
 // RemoteCredProvider returns a credentials provider for the default remote
@@ -123,8 +124,8 @@ func RemoteCredProvider(cfg aws.Config, handlers request.Handlers) credentials.P
 		return localHTTPCredProvider(cfg, handlers, u)
 	}
 
-	if uri := os.Getenv(ecsCredsProviderEnvVar); len(uri) > 0 {
+	if uri := os.Getenv(shareddefaults.ECSCredsProviderEnvVar); len(uri) > 0 {
-		u := fmt.Sprintf("http://169.254.170.2%s", uri)
+		u := fmt.Sprintf("%s%s", shareddefaults.ECSContainerCredentialsURI, uri)
 		return httpCredProvider(cfg, handlers, u)
 	}
 
@@ -187,6 +188,7 @@ func httpCredProvider(cfg aws.Config, handlers request.Handlers, u string) crede
 	return endpointcreds.NewProviderClient(cfg, handlers, u,
 		func(p *endpointcreds.Provider) {
 			p.ExpiryWindow = 5 * time.Minute
+			p.AuthorizationToken = os.Getenv(httpProviderAuthorizationEnvVar)
 		},
 	)
 }

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

@@ -4,34 +4,87 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
+	"strconv"
 	"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"
 	"github.com/aws/aws-sdk-go/internal/sdkuri"
 )
 
+// getToken uses the duration to return a token for EC2 metadata service,
+// or an error if the request failed.
+func (c *EC2Metadata) getToken(ctx aws.Context, duration time.Duration) (tokenOutput, error) {
+	op := &request.Operation{
+		Name:       "GetToken",
+		HTTPMethod: "PUT",
+		HTTPPath:   "/api/token",
+	}
+
+	var output tokenOutput
+	req := c.NewRequest(op, nil, &output)
+	req.SetContext(ctx)
+
+	// remove the fetch token handler from the request handlers to avoid infinite recursion
+	req.Handlers.Sign.RemoveByName(fetchTokenHandlerName)
+
+	// Swap the unmarshalMetadataHandler with unmarshalTokenHandler on this request.
+	req.Handlers.Unmarshal.Swap(unmarshalMetadataHandlerName, unmarshalTokenHandler)
+
+	ttl := strconv.FormatInt(int64(duration/time.Second), 10)
+	req.HTTPRequest.Header.Set(ttlHeader, ttl)
+
+	err := req.Send()
+
+	// Errors with bad request status should be returned.
+	if err != nil {
+		err = awserr.NewRequestFailure(
+			awserr.New(req.HTTPResponse.Status, http.StatusText(req.HTTPResponse.StatusCode), err),
+			req.HTTPResponse.StatusCode, req.RequestID)
+	}
+
+	return output, err
+}
+
 // GetMetadata uses the path provided to request information from the EC2
-// instance metdata service. The content will be returned as a string, or
+// instance metadata service. The content will be returned as a string, or
 // error if the request failed.
 func (c *EC2Metadata) GetMetadata(p string) (string, error) {
+	return c.GetMetadataWithContext(aws.BackgroundContext(), p)
+}
+
+// GetMetadataWithContext uses the path provided to request information from the EC2
+// instance metadata service. The content will be returned as a string, or
+// error if the request failed.
+func (c *EC2Metadata) GetMetadataWithContext(ctx aws.Context, p string) (string, error) {
 	op := &request.Operation{
 		Name:       "GetMetadata",
 		HTTPMethod: "GET",
 		HTTPPath:   sdkuri.PathJoin("/meta-data", p),
 	}
-
 	output := &metadataOutput{}
+
 	req := c.NewRequest(op, nil, output)
 
-	return output.Content, req.Send()
+	req.SetContext(ctx)
+
+	err := req.Send()
+	return output.Content, err
 }
 
 // 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) {
+	return c.GetUserDataWithContext(aws.BackgroundContext())
+}
+
+// GetUserDataWithContext 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) GetUserDataWithContext(ctx aws.Context) (string, error) {
 	op := &request.Operation{
 		Name:       "GetUserData",
 		HTTPMethod: "GET",
@@ -40,19 +93,23 @@ func (c *EC2Metadata) GetUserData() (string, error) {
 
 	output := &metadataOutput{}
 	req := c.NewRequest(op, nil, output)
-	req.Handlers.UnmarshalError.PushBack(func(r *request.Request) {
+	req.SetContext(ctx)
-		if r.HTTPResponse.StatusCode == http.StatusNotFound {
-			r.Error = awserr.New("NotFoundError", "user-data not found", r.Error)
-		}
-	})
 
-	return output.Content, req.Send()
+	err := req.Send()
+	return output.Content, err
 }
 
 // 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.
 func (c *EC2Metadata) GetDynamicData(p string) (string, error) {
+	return c.GetDynamicDataWithContext(aws.BackgroundContext(), p)
+}
+
+// GetDynamicDataWithContext 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.
+func (c *EC2Metadata) GetDynamicDataWithContext(ctx aws.Context, p string) (string, error) {
 	op := &request.Operation{
 		Name:       "GetDynamicData",
 		HTTPMethod: "GET",
@@ -61,15 +118,24 @@ func (c *EC2Metadata) GetDynamicData(p string) (string, error) {
 
 	output := &metadataOutput{}
 	req := c.NewRequest(op, nil, output)
+	req.SetContext(ctx)
 
-	return output.Content, req.Send()
+	err := req.Send()
+	return output.Content, err
 }
 
 // GetInstanceIdentityDocument retrieves an identity document describing an
 // instance. Error is returned if the request fails or is unable to parse
 // the response.
 func (c *EC2Metadata) GetInstanceIdentityDocument() (EC2InstanceIdentityDocument, error) {
-	resp, err := c.GetDynamicData("instance-identity/document")
+	return c.GetInstanceIdentityDocumentWithContext(aws.BackgroundContext())
+}
+
+// GetInstanceIdentityDocumentWithContext retrieves an identity document describing an
+// instance. Error is returned if the request fails or is unable to parse
+// the response.
+func (c *EC2Metadata) GetInstanceIdentityDocumentWithContext(ctx aws.Context) (EC2InstanceIdentityDocument, error) {
+	resp, err := c.GetDynamicDataWithContext(ctx, "instance-identity/document")
 	if err != nil {
 		return EC2InstanceIdentityDocument{},
 			awserr.New("EC2MetadataRequestError",
@@ -79,7 +145,7 @@ func (c *EC2Metadata) GetInstanceIdentityDocument() (EC2InstanceIdentityDocument
 	doc := EC2InstanceIdentityDocument{}
 	if err := json.NewDecoder(strings.NewReader(resp)).Decode(&doc); err != nil {
 		return EC2InstanceIdentityDocument{},
-			awserr.New("SerializationError",
+			awserr.New(request.ErrCodeSerialization,
 				"failed to decode EC2 instance identity document", err)
 	}
 
@@ -88,7 +154,12 @@ func (c *EC2Metadata) GetInstanceIdentityDocument() (EC2InstanceIdentityDocument
 
 // IAMInfo retrieves IAM info from the metadata API
 func (c *EC2Metadata) IAMInfo() (EC2IAMInfo, error) {
-	resp, err := c.GetMetadata("iam/info")
+	return c.IAMInfoWithContext(aws.BackgroundContext())
+}
+
+// IAMInfoWithContext retrieves IAM info from the metadata API
+func (c *EC2Metadata) IAMInfoWithContext(ctx aws.Context) (EC2IAMInfo, error) {
+	resp, err := c.GetMetadataWithContext(ctx, "iam/info")
 	if err != nil {
 		return EC2IAMInfo{},
 			awserr.New("EC2MetadataRequestError",
@@ -98,7 +169,7 @@ func (c *EC2Metadata) IAMInfo() (EC2IAMInfo, error) {
 	info := EC2IAMInfo{}
 	if err := json.NewDecoder(strings.NewReader(resp)).Decode(&info); err != nil {
 		return EC2IAMInfo{},
-			awserr.New("SerializationError",
+			awserr.New(request.ErrCodeSerialization,
 				"failed to decode EC2 IAM info", err)
 	}
 
@@ -113,20 +184,36 @@ func (c *EC2Metadata) IAMInfo() (EC2IAMInfo, error) {
 
 // Region returns the region the instance is running in.
 func (c *EC2Metadata) Region() (string, error) {
-	resp, err := c.GetMetadata("placement/availability-zone")
+	return c.RegionWithContext(aws.BackgroundContext())
+}
+
+// RegionWithContext returns the region the instance is running in.
+func (c *EC2Metadata) RegionWithContext(ctx aws.Context) (string, error) {
+	ec2InstanceIdentityDocument, err := c.GetInstanceIdentityDocumentWithContext(ctx)
 	if err != nil {
 		return "", err
 	}
-
+	// extract region from the ec2InstanceIdentityDocument
-	// returns region without the suffix. Eg: us-west-2a becomes us-west-2
+	region := ec2InstanceIdentityDocument.Region
-	return resp[:len(resp)-1], nil
+	if len(region) == 0 {
+		return "", awserr.New("EC2MetadataError", "invalid region received for ec2metadata instance", nil)
+	}
+	// returns region
+	return region, nil
 }
 
 // Available returns if the application has access to the EC2 Metadata service.
 // Can be used to determine if application is running within an EC2 Instance and
 // the metadata service is available.
 func (c *EC2Metadata) Available() bool {
-	if _, err := c.GetMetadata("instance-id"); err != nil {
+	return c.AvailableWithContext(aws.BackgroundContext())
+}
+
+// AvailableWithContext returns if the application has access to the EC2 Metadata service.
+// Can be used to determine if application is running within an EC2 Instance and
+// the metadata service is available.
+func (c *EC2Metadata) AvailableWithContext(ctx aws.Context) bool {
+	if _, err := c.GetMetadataWithContext(ctx, "instance-id"); err != nil {
 		return false
 	}
 
@@ -145,18 +232,19 @@ type EC2IAMInfo struct {
 // An EC2InstanceIdentityDocument provides the shape for unmarshaling
 // an instance identity document
 type EC2InstanceIdentityDocument struct {
-	DevpayProductCodes []string  `json:"devpayProductCodes"`
+	DevpayProductCodes      []string  `json:"devpayProductCodes"`
-	AvailabilityZone   string    `json:"availabilityZone"`
+	MarketplaceProductCodes []string  `json:"marketplaceProductCodes"`
-	PrivateIP          string    `json:"privateIp"`
+	AvailabilityZone        string    `json:"availabilityZone"`
-	Version            string    `json:"version"`
+	PrivateIP               string    `json:"privateIp"`
-	Region             string    `json:"region"`
+	Version                 string    `json:"version"`
-	InstanceID         string    `json:"instanceId"`
+	Region                  string    `json:"region"`
-	BillingProducts    []string  `json:"billingProducts"`
+	InstanceID              string    `json:"instanceId"`
-	InstanceType       string    `json:"instanceType"`
+	BillingProducts         []string  `json:"billingProducts"`
-	AccountID          string    `json:"accountId"`
+	InstanceType            string    `json:"instanceType"`
-	PendingTime        time.Time `json:"pendingTime"`
+	AccountID               string    `json:"accountId"`
-	ImageID            string    `json:"imageId"`
+	PendingTime             time.Time `json:"pendingTime"`
-	KernelID           string    `json:"kernelId"`
+	ImageID                 string    `json:"imageId"`
-	RamdiskID          string    `json:"ramdiskId"`
+	KernelID                string    `json:"kernelId"`
-	Architecture       string    `json:"architecture"`
+	RamdiskID               string    `json:"ramdiskId"`
+	Architecture            string    `json:"architecture"`
 }

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

@@ -4,7 +4,7 @@
 // This package's client can be disabled completely by setting the environment
 // variable "AWS_EC2_METADATA_DISABLED=true". This environment variable set to
 // true instructs the SDK to disable the EC2 Metadata client. The client cannot
-// be used while the environemnt variable is set to true, (case insensitive).
+// be used while the environment variable is set to true, (case insensitive).
 package ec2metadata
 
 import (
@@ -13,6 +13,7 @@ import (
 	"io"
 	"net/http"
 	"os"
+	"strconv"
 	"strings"
 	"time"
 
@@ -24,9 +25,25 @@ import (
 	"github.com/aws/aws-sdk-go/aws/request"
 )
 
-// ServiceName is the name of the service.
+const (
-const ServiceName = "ec2metadata"
+	// ServiceName is the name of the service.
-const disableServiceEnvVar = "AWS_EC2_METADATA_DISABLED"
+	ServiceName          = "ec2metadata"
+	disableServiceEnvVar = "AWS_EC2_METADATA_DISABLED"
+
+	// Headers for Token and TTL
+	ttlHeader   = "x-aws-ec2-metadata-token-ttl-seconds"
+	tokenHeader = "x-aws-ec2-metadata-token"
+
+	// Named Handler constants
+	fetchTokenHandlerName          = "FetchTokenHandler"
+	unmarshalMetadataHandlerName   = "unmarshalMetadataHandler"
+	unmarshalTokenHandlerName      = "unmarshalTokenHandler"
+	enableTokenProviderHandlerName = "enableTokenProviderHandler"
+
+	// TTL constants
+	defaultTTL          = 21600 * time.Second
+	ttlExpirationWindow = 30 * time.Second
+)
 
 // A EC2Metadata is an EC2 Metadata service Client.
 type EC2Metadata struct {
@@ -63,8 +80,10 @@ func NewClient(cfg aws.Config, handlers request.Handlers, endpoint, signingRegio
 			// use a shorter timeout than default because the metadata
 			// service is local if it is running, and to fail faster
 			// if not running on an ec2 instance.
-			Timeout: 5 * time.Second,
+			Timeout: 1 * time.Second,
 		}
+		// max number of retries on the client operation
+		cfg.MaxRetries = aws.Int(2)
 	}
 
 	svc := &EC2Metadata{
@@ -72,6 +91,7 @@ func NewClient(cfg aws.Config, handlers request.Handlers, endpoint, signingRegio
 			cfg,
 			metadata.ClientInfo{
 				ServiceName: ServiceName,
+				ServiceID:   ServiceName,
 				Endpoint:    endpoint,
 				APIVersion:  "latest",
 			},
@@ -79,18 +99,35 @@ func NewClient(cfg aws.Config, handlers request.Handlers, endpoint, signingRegio
 		),
 	}
 
-	svc.Handlers.Unmarshal.PushBack(unmarshalHandler)
+	// token provider instance
+	tp := newTokenProvider(svc, defaultTTL)
+
+	// NamedHandler for fetching token
+	svc.Handlers.Sign.PushBackNamed(request.NamedHandler{
+		Name: fetchTokenHandlerName,
+		Fn:   tp.fetchTokenHandler,
+	})
+	// NamedHandler for enabling token provider
+	svc.Handlers.Complete.PushBackNamed(request.NamedHandler{
+		Name: enableTokenProviderHandlerName,
+		Fn:   tp.enableTokenProviderHandler,
+	})
+
+	svc.Handlers.Unmarshal.PushBackNamed(unmarshalHandler)
 	svc.Handlers.UnmarshalError.PushBack(unmarshalError)
 	svc.Handlers.Validate.Clear()
 	svc.Handlers.Validate.PushBack(validateEndpointHandler)
 
 	// Disable the EC2 Metadata service if the environment variable is set.
-	// This shortcirctes the service's functionality to always fail to send
+	// This short-circuits the service's functionality to always fail to send
 	// requests.
 	if strings.ToLower(os.Getenv(disableServiceEnvVar)) == "true" {
 		svc.Handlers.Send.SwapNamed(request.NamedHandler{
 			Name: corehandlers.SendHandler.Name,
 			Fn: func(r *request.Request) {
+				r.HTTPResponse = &http.Response{
+					Header: http.Header{},
+				}
 				r.Error = awserr.New(
 					request.CanceledErrorCode,
 					"EC2 IMDS access disabled via "+disableServiceEnvVar+" env var",
@@ -103,7 +140,6 @@ func NewClient(cfg aws.Config, handlers request.Handlers, endpoint, signingRegio
 	for _, option := range opts {
 		option(svc.Client)
 	}
-
 	return svc
 }
 
@@ -115,30 +151,74 @@ type metadataOutput struct {
 	Content string
 }
 
-func unmarshalHandler(r *request.Request) {
+type tokenOutput struct {
-	defer r.HTTPResponse.Body.Close()
+	Token string
-	b := &bytes.Buffer{}
+	TTL   time.Duration
-	if _, err := io.Copy(b, r.HTTPResponse.Body); err != nil {
+}
-		r.Error = awserr.New("SerializationError", "unable to unmarshal EC2 metadata respose", err)
-		return
-	}
 
-	if data, ok := r.Data.(*metadataOutput); ok {
+// unmarshal token handler is used to parse the response of a getToken operation
-		data.Content = b.String()
+var unmarshalTokenHandler = request.NamedHandler{
-	}
+	Name: unmarshalTokenHandlerName,
+	Fn: func(r *request.Request) {
+		defer r.HTTPResponse.Body.Close()
+		var b bytes.Buffer
+		if _, err := io.Copy(&b, r.HTTPResponse.Body); err != nil {
+			r.Error = awserr.NewRequestFailure(awserr.New(request.ErrCodeSerialization,
+				"unable to unmarshal EC2 metadata response", err), r.HTTPResponse.StatusCode, r.RequestID)
+			return
+		}
+
+		v := r.HTTPResponse.Header.Get(ttlHeader)
+		data, ok := r.Data.(*tokenOutput)
+		if !ok {
+			return
+		}
+
+		data.Token = b.String()
+		// TTL is in seconds
+		i, err := strconv.ParseInt(v, 10, 64)
+		if err != nil {
+			r.Error = awserr.NewRequestFailure(awserr.New(request.ParamFormatErrCode,
+				"unable to parse EC2 token TTL response", err), r.HTTPResponse.StatusCode, r.RequestID)
+			return
+		}
+		t := time.Duration(i) * time.Second
+		data.TTL = t
+	},
+}
+
+var unmarshalHandler = request.NamedHandler{
+	Name: unmarshalMetadataHandlerName,
+	Fn: func(r *request.Request) {
+		defer r.HTTPResponse.Body.Close()
+		var b bytes.Buffer
+		if _, err := io.Copy(&b, r.HTTPResponse.Body); err != nil {
+			r.Error = awserr.NewRequestFailure(awserr.New(request.ErrCodeSerialization,
+				"unable to unmarshal EC2 metadata response", err), r.HTTPResponse.StatusCode, r.RequestID)
+			return
+		}
+
+		if data, ok := r.Data.(*metadataOutput); ok {
+			data.Content = b.String()
+		}
+	},
 }
 
 func unmarshalError(r *request.Request) {
 	defer r.HTTPResponse.Body.Close()
-	b := &bytes.Buffer{}
+	var b bytes.Buffer
-	if _, err := io.Copy(b, r.HTTPResponse.Body); err != nil {
+
-		r.Error = awserr.New("SerializationError", "unable to unmarshal EC2 metadata error respose", err)
+	if _, err := io.Copy(&b, r.HTTPResponse.Body); err != nil {
+		r.Error = awserr.NewRequestFailure(
+			awserr.New(request.ErrCodeSerialization, "unable to unmarshal EC2 metadata error response", err),
+			r.HTTPResponse.StatusCode, r.RequestID)
 		return
 	}
 
 	// 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("EC2MetadataError", "failed to make EC2Metadata request", errors.New(b.String()))
+	r.Error = awserr.NewRequestFailure(awserr.New("EC2MetadataError", "failed to make EC2Metadata request", errors.New(b.String())),
+		r.HTTPResponse.StatusCode, r.RequestID)
 }
 
 func validateEndpointHandler(r *request.Request) {

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

@@ -0,0 +1,92 @@
+package ec2metadata
+
+import (
+	"net/http"
+	"sync/atomic"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+	"github.com/aws/aws-sdk-go/aws/credentials"
+	"github.com/aws/aws-sdk-go/aws/request"
+)
+
+// A tokenProvider struct provides access to EC2Metadata client
+// and atomic instance of a token, along with configuredTTL for it.
+// tokenProvider also provides an atomic flag to disable the
+// fetch token operation.
+// The disabled member will use 0 as false, and 1 as true.
+type tokenProvider struct {
+	client        *EC2Metadata
+	token         atomic.Value
+	configuredTTL time.Duration
+	disabled      uint32
+}
+
+// A ec2Token struct helps use of token in EC2 Metadata service ops
+type ec2Token struct {
+	token string
+	credentials.Expiry
+}
+
+// newTokenProvider provides a pointer to a tokenProvider instance
+func newTokenProvider(c *EC2Metadata, duration time.Duration) *tokenProvider {
+	return &tokenProvider{client: c, configuredTTL: duration}
+}
+
+// fetchTokenHandler fetches token for EC2Metadata service client by default.
+func (t *tokenProvider) fetchTokenHandler(r *request.Request) {
+
+	// short-circuits to insecure data flow if tokenProvider is disabled.
+	if v := atomic.LoadUint32(&t.disabled); v == 1 {
+		return
+	}
+
+	if ec2Token, ok := t.token.Load().(ec2Token); ok && !ec2Token.IsExpired() {
+		r.HTTPRequest.Header.Set(tokenHeader, ec2Token.token)
+		return
+	}
+
+	output, err := t.client.getToken(r.Context(), t.configuredTTL)
+
+	if err != nil {
+
+		// change the disabled flag on token provider to true,
+		// when error is request timeout error.
+		if requestFailureError, ok := err.(awserr.RequestFailure); ok {
+			switch requestFailureError.StatusCode() {
+			case http.StatusForbidden, http.StatusNotFound, http.StatusMethodNotAllowed:
+				atomic.StoreUint32(&t.disabled, 1)
+			case http.StatusBadRequest:
+				r.Error = requestFailureError
+			}
+
+			// Check if request timed out while waiting for response
+			if e, ok := requestFailureError.OrigErr().(awserr.Error); ok {
+				if e.Code() == request.ErrCodeRequestError {
+					atomic.StoreUint32(&t.disabled, 1)
+				}
+			}
+		}
+		return
+	}
+
+	newToken := ec2Token{
+		token: output.Token,
+	}
+	newToken.SetExpiration(time.Now().Add(output.TTL), ttlExpirationWindow)
+	t.token.Store(newToken)
+
+	// Inject token header to the request.
+	if ec2Token, ok := t.token.Load().(ec2Token); ok {
+		r.HTTPRequest.Header.Set(tokenHeader, ec2Token.token)
+	}
+}
+
+// enableTokenProviderHandler enables the token provider
+func (t *tokenProvider) enableTokenProviderHandler(r *request.Request) {
+	// If the error code status is 401, we enable the token provider
+	if e, ok := r.Error.(awserr.RequestFailure); ok && e != nil &&
+		e.StatusCode() == http.StatusUnauthorized {
+		atomic.StoreUint32(&t.disabled, 0)
+	}
+}

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

@@ -83,19 +83,53 @@ func decodeV3Endpoints(modelDef modelDefinition, opts DecodeModelOptions) (Resol
 		p := &ps[i]
 		custAddEC2Metadata(p)
 		custAddS3DualStack(p)
+		custRegionalS3(p)
 		custRmIotDataService(p)
 		custFixAppAutoscalingChina(p)
+		custFixAppAutoscalingUsGov(p)
 	}
 
 	return ps, nil
 }
 
 func custAddS3DualStack(p *partition) {
+	if !(p.ID == "aws" || p.ID == "aws-cn" || p.ID == "aws-us-gov") {
+		return
+	}
+
+	custAddDualstack(p, "s3")
+	custAddDualstack(p, "s3-control")
+}
+
+func custRegionalS3(p *partition) {
 	if p.ID != "aws" {
 		return
 	}
 
-	s, ok := p.Services["s3"]
+	service, ok := p.Services["s3"]
+	if !ok {
+		return
+	}
+
+	// If global endpoint already exists no customization needed.
+	if _, ok := service.Endpoints["aws-global"]; ok {
+		return
+	}
+
+	service.PartitionEndpoint = "aws-global"
+	service.Endpoints["us-east-1"] = endpoint{}
+	service.Endpoints["aws-global"] = endpoint{
+		Hostname: "s3.amazonaws.com",
+		CredentialScope: credentialScope{
+			Region: "us-east-1",
+		},
+	}
+
+	p.Services["s3"] = service
+}
+
+func custAddDualstack(p *partition, svcName string) {
+	s, ok := p.Services[svcName]
 	if !ok {
 		return
 	}
@@ -103,7 +137,7 @@ func custAddS3DualStack(p *partition) {
 	s.Defaults.HasDualStack = boxedTrue
 	s.Defaults.DualStackHostname = "{service}.dualstack.{region}.{dnsSuffix}"
 
-	p.Services["s3"] = s
+	p.Services[svcName] = s
 }
 
 func custAddEC2Metadata(p *partition) {
@@ -144,6 +178,33 @@ func custFixAppAutoscalingChina(p *partition) {
 	p.Services[serviceName] = s
 }
 
+func custFixAppAutoscalingUsGov(p *partition) {
+	if p.ID != "aws-us-gov" {
+		return
+	}
+
+	const serviceName = "application-autoscaling"
+	s, ok := p.Services[serviceName]
+	if !ok {
+		return
+	}
+
+	if a := s.Defaults.CredentialScope.Service; a != "" {
+		fmt.Printf("custFixAppAutoscalingUsGov: ignoring customization, expected empty credential scope service, got %s\n", a)
+		return
+	}
+
+	if a := s.Defaults.Hostname; a != "" {
+		fmt.Printf("custFixAppAutoscalingUsGov: ignoring customization, expected empty hostname, got %s\n", a)
+		return
+	}
+
+	s.Defaults.CredentialScope.Service = "application-autoscaling"
+	s.Defaults.Hostname = "autoscaling.{region}.amazonaws.com"
+
+	p.Services[serviceName] = s
+}
+
 type decodeModelError struct {
 	awsError
 }

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

@@ -0,0 +1,141 @@
+package endpoints
+
+// Service identifiers
+//
+// Deprecated: Use client package's EndpointsID value instead of these
+// ServiceIDs. These IDs are not maintained, and are out of date.
+const (
+	A4bServiceID                          = "a4b"                          // A4b.
+	AcmServiceID                          = "acm"                          // Acm.
+	AcmPcaServiceID                       = "acm-pca"                      // AcmPca.
+	ApiMediatailorServiceID               = "api.mediatailor"              // ApiMediatailor.
+	ApiPricingServiceID                   = "api.pricing"                  // ApiPricing.
+	ApiSagemakerServiceID                 = "api.sagemaker"                // ApiSagemaker.
+	ApigatewayServiceID                   = "apigateway"                   // Apigateway.
+	ApplicationAutoscalingServiceID       = "application-autoscaling"      // ApplicationAutoscaling.
+	Appstream2ServiceID                   = "appstream2"                   // Appstream2.
+	AppsyncServiceID                      = "appsync"                      // Appsync.
+	AthenaServiceID                       = "athena"                       // Athena.
+	AutoscalingServiceID                  = "autoscaling"                  // Autoscaling.
+	AutoscalingPlansServiceID             = "autoscaling-plans"            // AutoscalingPlans.
+	BatchServiceID                        = "batch"                        // Batch.
+	BudgetsServiceID                      = "budgets"                      // Budgets.
+	CeServiceID                           = "ce"                           // Ce.
+	ChimeServiceID                        = "chime"                        // Chime.
+	Cloud9ServiceID                       = "cloud9"                       // Cloud9.
+	ClouddirectoryServiceID               = "clouddirectory"               // Clouddirectory.
+	CloudformationServiceID               = "cloudformation"               // Cloudformation.
+	CloudfrontServiceID                   = "cloudfront"                   // Cloudfront.
+	CloudhsmServiceID                     = "cloudhsm"                     // Cloudhsm.
+	Cloudhsmv2ServiceID                   = "cloudhsmv2"                   // Cloudhsmv2.
+	CloudsearchServiceID                  = "cloudsearch"                  // Cloudsearch.
+	CloudtrailServiceID                   = "cloudtrail"                   // Cloudtrail.
+	CodebuildServiceID                    = "codebuild"                    // Codebuild.
+	CodecommitServiceID                   = "codecommit"                   // Codecommit.
+	CodedeployServiceID                   = "codedeploy"                   // Codedeploy.
+	CodepipelineServiceID                 = "codepipeline"                 // Codepipeline.
+	CodestarServiceID                     = "codestar"                     // Codestar.
+	CognitoIdentityServiceID              = "cognito-identity"             // CognitoIdentity.
+	CognitoIdpServiceID                   = "cognito-idp"                  // CognitoIdp.
+	CognitoSyncServiceID                  = "cognito-sync"                 // CognitoSync.
+	ComprehendServiceID                   = "comprehend"                   // Comprehend.
+	ConfigServiceID                       = "config"                       // Config.
+	CurServiceID                          = "cur"                          // Cur.
+	DatapipelineServiceID                 = "datapipeline"                 // Datapipeline.
+	DaxServiceID                          = "dax"                          // Dax.
+	DevicefarmServiceID                   = "devicefarm"                   // Devicefarm.
+	DirectconnectServiceID                = "directconnect"                // Directconnect.
+	DiscoveryServiceID                    = "discovery"                    // Discovery.
+	DmsServiceID                          = "dms"                          // Dms.
+	DsServiceID                           = "ds"                           // Ds.
+	DynamodbServiceID                     = "dynamodb"                     // Dynamodb.
+	Ec2ServiceID                          = "ec2"                          // Ec2.
+	Ec2metadataServiceID                  = "ec2metadata"                  // Ec2metadata.
+	EcrServiceID                          = "ecr"                          // Ecr.
+	EcsServiceID                          = "ecs"                          // Ecs.
+	ElasticacheServiceID                  = "elasticache"                  // Elasticache.
+	ElasticbeanstalkServiceID             = "elasticbeanstalk"             // Elasticbeanstalk.
+	ElasticfilesystemServiceID            = "elasticfilesystem"            // Elasticfilesystem.
+	ElasticloadbalancingServiceID         = "elasticloadbalancing"         // Elasticloadbalancing.
+	ElasticmapreduceServiceID             = "elasticmapreduce"             // Elasticmapreduce.
+	ElastictranscoderServiceID            = "elastictranscoder"            // Elastictranscoder.
+	EmailServiceID                        = "email"                        // Email.
+	EntitlementMarketplaceServiceID       = "entitlement.marketplace"      // EntitlementMarketplace.
+	EsServiceID                           = "es"                           // Es.
+	EventsServiceID                       = "events"                       // Events.
+	FirehoseServiceID                     = "firehose"                     // Firehose.
+	FmsServiceID                          = "fms"                          // Fms.
+	GameliftServiceID                     = "gamelift"                     // Gamelift.
+	GlacierServiceID                      = "glacier"                      // Glacier.
+	GlueServiceID                         = "glue"                         // Glue.
+	GreengrassServiceID                   = "greengrass"                   // Greengrass.
+	GuarddutyServiceID                    = "guardduty"                    // Guardduty.
+	HealthServiceID                       = "health"                       // Health.
+	IamServiceID                          = "iam"                          // Iam.
+	ImportexportServiceID                 = "importexport"                 // Importexport.
+	InspectorServiceID                    = "inspector"                    // Inspector.
+	IotServiceID                          = "iot"                          // Iot.
+	IotanalyticsServiceID                 = "iotanalytics"                 // Iotanalytics.
+	KinesisServiceID                      = "kinesis"                      // Kinesis.
+	KinesisanalyticsServiceID             = "kinesisanalytics"             // Kinesisanalytics.
+	KinesisvideoServiceID                 = "kinesisvideo"                 // Kinesisvideo.
+	KmsServiceID                          = "kms"                          // Kms.
+	LambdaServiceID                       = "lambda"                       // Lambda.
+	LightsailServiceID                    = "lightsail"                    // Lightsail.
+	LogsServiceID                         = "logs"                         // Logs.
+	MachinelearningServiceID              = "machinelearning"              // Machinelearning.
+	MarketplacecommerceanalyticsServiceID = "marketplacecommerceanalytics" // Marketplacecommerceanalytics.
+	MediaconvertServiceID                 = "mediaconvert"                 // Mediaconvert.
+	MedialiveServiceID                    = "medialive"                    // Medialive.
+	MediapackageServiceID                 = "mediapackage"                 // Mediapackage.
+	MediastoreServiceID                   = "mediastore"                   // Mediastore.
+	MeteringMarketplaceServiceID          = "metering.marketplace"         // MeteringMarketplace.
+	MghServiceID                          = "mgh"                          // Mgh.
+	MobileanalyticsServiceID              = "mobileanalytics"              // Mobileanalytics.
+	ModelsLexServiceID                    = "models.lex"                   // ModelsLex.
+	MonitoringServiceID                   = "monitoring"                   // Monitoring.
+	MturkRequesterServiceID               = "mturk-requester"              // MturkRequester.
+	NeptuneServiceID                      = "neptune"                      // Neptune.
+	OpsworksServiceID                     = "opsworks"                     // Opsworks.
+	OpsworksCmServiceID                   = "opsworks-cm"                  // OpsworksCm.
+	OrganizationsServiceID                = "organizations"                // Organizations.
+	PinpointServiceID                     = "pinpoint"                     // Pinpoint.
+	PollyServiceID                        = "polly"                        // Polly.
+	RdsServiceID                          = "rds"                          // Rds.
+	RedshiftServiceID                     = "redshift"                     // Redshift.
+	RekognitionServiceID                  = "rekognition"                  // Rekognition.
+	ResourceGroupsServiceID               = "resource-groups"              // ResourceGroups.
+	Route53ServiceID                      = "route53"                      // Route53.
+	Route53domainsServiceID               = "route53domains"               // Route53domains.
+	RuntimeLexServiceID                   = "runtime.lex"                  // RuntimeLex.
+	RuntimeSagemakerServiceID             = "runtime.sagemaker"            // RuntimeSagemaker.
+	S3ServiceID                           = "s3"                           // S3.
+	S3ControlServiceID                    = "s3-control"                   // S3Control.
+	SagemakerServiceID                    = "api.sagemaker"                // Sagemaker.
+	SdbServiceID                          = "sdb"                          // Sdb.
+	SecretsmanagerServiceID               = "secretsmanager"               // Secretsmanager.
+	ServerlessrepoServiceID               = "serverlessrepo"               // Serverlessrepo.
+	ServicecatalogServiceID               = "servicecatalog"               // Servicecatalog.
+	ServicediscoveryServiceID             = "servicediscovery"             // Servicediscovery.
+	ShieldServiceID                       = "shield"                       // Shield.
+	SmsServiceID                          = "sms"                          // Sms.
+	SnowballServiceID                     = "snowball"                     // Snowball.
+	SnsServiceID                          = "sns"                          // Sns.
+	SqsServiceID                          = "sqs"                          // Sqs.
+	SsmServiceID                          = "ssm"                          // Ssm.
+	StatesServiceID                       = "states"                       // States.
+	StoragegatewayServiceID               = "storagegateway"               // Storagegateway.
+	StreamsDynamodbServiceID              = "streams.dynamodb"             // StreamsDynamodb.
+	StsServiceID                          = "sts"                          // Sts.
+	SupportServiceID                      = "support"                      // Support.
+	SwfServiceID                          = "swf"                          // Swf.
+	TaggingServiceID                      = "tagging"                      // Tagging.
+	TransferServiceID                     = "transfer"                     // Transfer.
+	TranslateServiceID                    = "translate"                    // Translate.
+	WafServiceID                          = "waf"                          // Waf.
+	WafRegionalServiceID                  = "waf-regional"                 // WafRegional.
+	WorkdocsServiceID                     = "workdocs"                     // Workdocs.
+	WorkmailServiceID                     = "workmail"                     // Workmail.
+	WorkspacesServiceID                   = "workspaces"                   // Workspaces.
+	XrayServiceID                         = "xray"                         // Xray.
+)

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

@@ -3,6 +3,7 @@ package endpoints
 import (
 	"fmt"
 	"regexp"
+	"strings"
 
 	"github.com/aws/aws-sdk-go/aws/awserr"
 )
@@ -35,7 +36,7 @@ type Options struct {
 	//
 	// If resolving an endpoint on the partition list the provided region will
 	// be used to determine which partition's domain name pattern to the service
-	// endpoint ID with. If both the service and region are unkonwn and resolving
+	// endpoint ID with. If both the service and region are unknown and resolving
 	// the endpoint on partition list an UnknownEndpointError error will be returned.
 	//
 	// If resolving and endpoint on a partition specific resolver that partition's
@@ -46,6 +47,108 @@ type Options struct {
 	//
 	// This option is ignored if StrictMatching is enabled.
 	ResolveUnknownService bool
+
+	// STS Regional Endpoint flag helps with resolving the STS endpoint
+	STSRegionalEndpoint STSRegionalEndpoint
+
+	// S3 Regional Endpoint flag helps with resolving the S3 endpoint
+	S3UsEast1RegionalEndpoint S3UsEast1RegionalEndpoint
+}
+
+// STSRegionalEndpoint is an enum for the states of the STS Regional Endpoint
+// options.
+type STSRegionalEndpoint int
+
+func (e STSRegionalEndpoint) String() string {
+	switch e {
+	case LegacySTSEndpoint:
+		return "legacy"
+	case RegionalSTSEndpoint:
+		return "regional"
+	case UnsetSTSEndpoint:
+		return ""
+	default:
+		return "unknown"
+	}
+}
+
+const (
+
+	// UnsetSTSEndpoint represents that STS Regional Endpoint flag is not specified.
+	UnsetSTSEndpoint STSRegionalEndpoint = iota
+
+	// LegacySTSEndpoint represents when STS Regional Endpoint flag is specified
+	// to use legacy endpoints.
+	LegacySTSEndpoint
+
+	// RegionalSTSEndpoint represents when STS Regional Endpoint flag is specified
+	// to use regional endpoints.
+	RegionalSTSEndpoint
+)
+
+// GetSTSRegionalEndpoint function returns the STSRegionalEndpointFlag based
+// on the input string provided in env config or shared config by the user.
+//
+// `legacy`, `regional` are the only case-insensitive valid strings for
+// resolving the STS regional Endpoint flag.
+func GetSTSRegionalEndpoint(s string) (STSRegionalEndpoint, error) {
+	switch {
+	case strings.EqualFold(s, "legacy"):
+		return LegacySTSEndpoint, nil
+	case strings.EqualFold(s, "regional"):
+		return RegionalSTSEndpoint, nil
+	default:
+		return UnsetSTSEndpoint, fmt.Errorf("unable to resolve the value of STSRegionalEndpoint for %v", s)
+	}
+}
+
+// S3UsEast1RegionalEndpoint is an enum for the states of the S3 us-east-1
+// Regional Endpoint options.
+type S3UsEast1RegionalEndpoint int
+
+func (e S3UsEast1RegionalEndpoint) String() string {
+	switch e {
+	case LegacyS3UsEast1Endpoint:
+		return "legacy"
+	case RegionalS3UsEast1Endpoint:
+		return "regional"
+	case UnsetS3UsEast1Endpoint:
+		return ""
+	default:
+		return "unknown"
+	}
+}
+
+const (
+
+	// UnsetS3UsEast1Endpoint represents that S3 Regional Endpoint flag is not
+	// specified.
+	UnsetS3UsEast1Endpoint S3UsEast1RegionalEndpoint = iota
+
+	// LegacyS3UsEast1Endpoint represents when S3 Regional Endpoint flag is
+	// specified to use legacy endpoints.
+	LegacyS3UsEast1Endpoint
+
+	// RegionalS3UsEast1Endpoint represents when S3 Regional Endpoint flag is
+	// specified to use regional endpoints.
+	RegionalS3UsEast1Endpoint
+)
+
+// GetS3UsEast1RegionalEndpoint function returns the S3UsEast1RegionalEndpointFlag based
+// on the input string provided in env config or shared config by the user.
+//
+// `legacy`, `regional` are the only case-insensitive valid strings for
+// resolving the S3 regional Endpoint flag.
+func GetS3UsEast1RegionalEndpoint(s string) (S3UsEast1RegionalEndpoint, error) {
+	switch {
+	case strings.EqualFold(s, "legacy"):
+		return LegacyS3UsEast1Endpoint, nil
+	case strings.EqualFold(s, "regional"):
+		return RegionalS3UsEast1Endpoint, nil
+	default:
+		return UnsetS3UsEast1Endpoint,
+			fmt.Errorf("unable to resolve the value of S3UsEast1RegionalEndpoint for %v", s)
+	}
 }
 
 // Set combines all of the option functions together.
@@ -79,6 +182,12 @@ func ResolveUnknownServiceOption(o *Options) {
 	o.ResolveUnknownService = true
 }
 
+// STSRegionalEndpointOption enables the STS endpoint resolver behavior to resolve
+// STS endpoint to their regional endpoint, instead of the global endpoint.
+func STSRegionalEndpointOption(o *Options) {
+	o.STSRegionalEndpoint = RegionalSTSEndpoint
+}
+
 // A Resolver provides the interface for functionality to resolve endpoints.
 // The build in Partition and DefaultResolver return value satisfy this interface.
 type Resolver interface {
@@ -170,10 +279,13 @@ func PartitionForRegion(ps []Partition, regionID string) (Partition, bool) {
 // A Partition provides the ability to enumerate the partition's regions
 // and services.
 type Partition struct {
-	id string
+	id, dnsSuffix string
-	p  *partition
+	p             *partition
 }
 
+// DNSSuffix returns the base domain name of the partition.
+func (p Partition) DNSSuffix() string { return p.dnsSuffix }
+
 // ID returns the identifier of the partition.
 func (p Partition) ID() string { return p.id }
 
@@ -191,7 +303,7 @@ func (p Partition) ID() string { return p.id }
 // 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 endpoint returned my look valid but may not work.
+// StrictMatching enabled the endpoint returned may look valid but may not work.
 // StrictMatching requires the SDK to be updated if you want to take advantage
 // of new regions and services expansions.
 //
@@ -205,7 +317,7 @@ func (p Partition) EndpointFor(service, region string, opts ...func(*Options)) (
 // 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{}
+	rs := make(map[string]Region, len(p.p.Regions))
 	for id, r := range p.p.Regions {
 		rs[id] = Region{
 			id:   id,
@@ -220,7 +332,7 @@ func (p Partition) Regions() map[string]Region {
 // 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{}
+	ss := make(map[string]Service, len(p.p.Services))
 	for id := range p.p.Services {
 		ss[id] = Service{
 			id: id,
@@ -307,7 +419,7 @@ func (s Service) Regions() map[string]Region {
 // A region is the AWS region the service exists in. Whereas a Endpoint is
 // an URL that can be resolved to a instance of a service.
 func (s Service) Endpoints() map[string]Endpoint {
-	es := map[string]Endpoint{}
+	es := make(map[string]Endpoint, len(s.p.Services[s.id].Endpoints))
 	for id := range s.p.Services[s.id].Endpoints {
 		es[id] = Endpoint{
 			id:        id,
@@ -347,6 +459,9 @@ type ResolvedEndpoint struct {
 	// The endpoint URL
 	URL string
 
+	// The endpoint partition
+	PartitionID string
+
 	// The region that should be used for signing requests.
 	SigningRegion string
 

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

@@ -0,0 +1,24 @@
+package endpoints
+
+var legacyGlobalRegions = map[string]map[string]struct{}{
+	"sts": {
+		"ap-northeast-1": {},
+		"ap-south-1":     {},
+		"ap-southeast-1": {},
+		"ap-southeast-2": {},
+		"ca-central-1":   {},
+		"eu-central-1":   {},
+		"eu-north-1":     {},
+		"eu-west-1":      {},
+		"eu-west-2":      {},
+		"eu-west-3":      {},
+		"sa-east-1":      {},
+		"us-east-1":      {},
+		"us-east-2":      {},
+		"us-west-1":      {},
+		"us-west-2":      {},
+	},
+	"s3": {
+		"us-east-1": {},
+	},
+}

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

@@ -7,6 +7,8 @@ import (
 	"strings"
 )
 
+var regionValidationRegex = regexp.MustCompile(`^[[:alnum:]]([[:alnum:]\-]*[[:alnum:]])?$`)
+
 type partitions []partition
 
 func (ps partitions) EndpointFor(service, region string, opts ...func(*Options)) (ResolvedEndpoint, error) {
@@ -54,8 +56,9 @@ type partition struct {
 
 func (p partition) Partition() Partition {
 	return Partition{
-		id: p.ID,
+		dnsSuffix: p.DNSSuffix,
-		p:  &p,
+		id:        p.ID,
+		p:         &p,
 	}
 }
 
@@ -74,24 +77,56 @@ func (p partition) canResolveEndpoint(service, region string, strictMatch bool)
 	return p.RegionRegex.MatchString(region)
 }
 
+func allowLegacyEmptyRegion(service string) bool {
+	legacy := map[string]struct{}{
+		"budgets":       {},
+		"ce":            {},
+		"chime":         {},
+		"cloudfront":    {},
+		"ec2metadata":   {},
+		"iam":           {},
+		"importexport":  {},
+		"organizations": {},
+		"route53":       {},
+		"sts":           {},
+		"support":       {},
+		"waf":           {},
+	}
+
+	_, allowed := legacy[service]
+	return allowed
+}
+
 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 || opt.ResolveUnknownService) {
+	if len(service) == 0 || !(hasService || opt.ResolveUnknownService) {
 		// Only return error if the resolver will not fallback to creating
 		// endpoint based on service endpoint ID passed in.
 		return resolved, NewUnknownServiceError(p.ID, service, serviceList(p.Services))
 	}
 
+	if len(region) == 0 && allowLegacyEmptyRegion(service) && len(s.PartitionEndpoint) != 0 {
+		region = s.PartitionEndpoint
+	}
+
+	if (service == "sts" && opt.STSRegionalEndpoint != RegionalSTSEndpoint) ||
+		(service == "s3" && opt.S3UsEast1RegionalEndpoint != RegionalS3UsEast1Endpoint) {
+		if _, ok := legacyGlobalRegions[service][region]; ok {
+			region = "aws-global"
+		}
+	}
+
 	e, hasEndpoint := s.endpointForRegion(region)
-	if !hasEndpoint && opt.StrictMatching {
+	if len(region) == 0 || (!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
+
+	return e.resolve(service, p.ID, region, p.DNSSuffix, defs, opt)
 }
 
 func serviceList(ss services) []string {
@@ -200,7 +235,7 @@ func getByPriority(s []string, p []string, def string) string {
 	return s[0]
 }
 
-func (e endpoint) resolve(service, region, dnsSuffix string, defs []endpoint, opts Options) ResolvedEndpoint {
+func (e endpoint) resolve(service, partitionID, region, dnsSuffix string, defs []endpoint, opts Options) (ResolvedEndpoint, error) {
 	var merged endpoint
 	for _, def := range defs {
 		merged.mergeIn(def)
@@ -208,20 +243,6 @@ func (e endpoint) resolve(service, region, dnsSuffix string, defs []endpoint, op
 	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
@@ -234,13 +255,32 @@ func (e endpoint) resolve(service, region, dnsSuffix string, defs []endpoint, op
 		signingNameDerived = true
 	}
 
+	hostname := e.Hostname
+	// Offset the hostname for dualstack if enabled
+	if opts.UseDualStack && e.HasDualStack == boxedTrue {
+		hostname = e.DualStackHostname
+		region = signingRegion
+	}
+
+	if !validateInputRegion(region) {
+		return ResolvedEndpoint{}, fmt.Errorf("invalid region identifier format provided")
+	}
+
+	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)
+
 	return ResolvedEndpoint{
 		URL:                u,
+		PartitionID:        partitionID,
 		SigningRegion:      signingRegion,
 		SigningName:        signingName,
 		SigningNameDerived: signingNameDerived,
 		SigningMethod:      getByPriority(e.SignatureVersions, signerPriority, defaultSigner),
-	}
+	}, nil
 }
 
 func getEndpointScheme(protocols []string, disableSSL bool) string {
@@ -305,3 +345,7 @@ const (
 	boxedFalse
 	boxedTrue
 )
+
+func validateInputRegion(region string) bool {
+	return regionValidationRegex.MatchString(region)
+}

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

@@ -16,6 +16,10 @@ import (
 type CodeGenOptions struct {
 	// Options for how the model will be decoded.
 	DecodeModelOptions DecodeModelOptions
+
+	// Disables code generation of the service endpoint prefix IDs defined in
+	// the model.
+	DisableGenerateServiceIDs bool
 }
 
 // Set combines all of the option functions together
@@ -39,8 +43,16 @@ func CodeGenModel(modelFile io.Reader, outFile io.Writer, optFns ...func(*CodeGe
 		return err
 	}
 
+	v := struct {
+		Resolver
+		CodeGenOptions
+	}{
+		Resolver:       resolver,
+		CodeGenOptions: opts,
+	}
+
 	tmpl := template.Must(template.New("tmpl").Funcs(funcMap).Parse(v3Tmpl))
-	if err := tmpl.ExecuteTemplate(outFile, "defaults", resolver); err != nil {
+	if err := tmpl.ExecuteTemplate(outFile, "defaults", v); err != nil {
 		return fmt.Errorf("failed to execute template, %v", err)
 	}
 
@@ -166,15 +178,17 @@ import (
 	"regexp"
 )
 
-	{{ template "partition consts" . }}
+	{{ template "partition consts" $.Resolver }}
 
-	{{ range $_, $partition := . }}
+	{{ range $_, $partition := $.Resolver }}
 		{{ template "partition region consts" $partition }}
 	{{ end }}
 
-	{{ template "service consts" . }}
+	{{ if not $.DisableGenerateServiceIDs -}}
+	{{ template "service consts" $.Resolver }}
+	{{- end }}
 	
-	{{ template "endpoint resolvers" . }}
+	{{ template "endpoint resolvers" $.Resolver }}
 {{- end }}
 
 {{ define "partition consts" }}

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

@@ -5,13 +5,9 @@ import "github.com/aws/aws-sdk-go/aws/awserr"
 var (
 	// ErrMissingRegion is an error that is returned if region configuration is
 	// not found.
-	//
-	// @readonly
 	ErrMissingRegion = awserr.New("MissingRegion", "could not find region configuration", nil)
 
 	// ErrMissingEndpoint is an error that is returned if an endpoint cannot be
 	// resolved for a service.
-	//
-	// @readonly
 	ErrMissingEndpoint = awserr.New("MissingEndpoint", "'Endpoint' configuration is required for this service", nil)
 )

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

@@ -1,18 +1,18 @@
-// +build !appengine,!plan9
-
 package request
 
 import (
-	"net"
+	"strings"
-	"os"
-	"syscall"
 )
 
 func isErrConnectionReset(err error) bool {
-	if opErr, ok := err.(*net.OpError); ok {
+	if strings.Contains(err.Error(), "read: connection reset") {
-		if sysErr, ok := opErr.Err.(*os.SyscallError); ok {
+		return false
-			return sysErr.Err == syscall.ECONNRESET
+	}
-		}
+
+	if strings.Contains(err.Error(), "use of closed network connection") ||
+		strings.Contains(err.Error(), "connection reset") ||
+		strings.Contains(err.Error(), "broken pipe") {
+		return true
 	}
 
 	return false

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

@@ -1,11 +0,0 @@
-// +build appengine plan9
-
-package request
-
-import (
-	"strings"
-)
-
-func isErrConnectionReset(err error) bool {
-	return strings.Contains(err.Error(), "connection reset")
-}

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

@@ -10,6 +10,7 @@ import (
 type Handlers struct {
 	Validate         HandlerList
 	Build            HandlerList
+	BuildStream      HandlerList
 	Sign             HandlerList
 	Send             HandlerList
 	ValidateResponse HandlerList
@@ -19,14 +20,16 @@ type Handlers struct {
 	UnmarshalError   HandlerList
 	Retry            HandlerList
 	AfterRetry       HandlerList
+	CompleteAttempt  HandlerList
 	Complete         HandlerList
 }
 
-// Copy returns of this handler's lists.
+// Copy returns a copy of this handler's lists.
 func (h *Handlers) Copy() Handlers {
 	return Handlers{
 		Validate:         h.Validate.copy(),
 		Build:            h.Build.copy(),
+		BuildStream:      h.BuildStream.copy(),
 		Sign:             h.Sign.copy(),
 		Send:             h.Send.copy(),
 		ValidateResponse: h.ValidateResponse.copy(),
@@ -36,14 +39,16 @@ func (h *Handlers) Copy() Handlers {
 		UnmarshalMeta:    h.UnmarshalMeta.copy(),
 		Retry:            h.Retry.copy(),
 		AfterRetry:       h.AfterRetry.copy(),
+		CompleteAttempt:  h.CompleteAttempt.copy(),
 		Complete:         h.Complete.copy(),
 	}
 }
 
-// Clear removes callback functions for all handlers
+// Clear removes callback functions for all handlers.
 func (h *Handlers) Clear() {
 	h.Validate.Clear()
 	h.Build.Clear()
+	h.BuildStream.Clear()
 	h.Send.Clear()
 	h.Sign.Clear()
 	h.Unmarshal.Clear()
@@ -53,9 +58,58 @@ func (h *Handlers) Clear() {
 	h.ValidateResponse.Clear()
 	h.Retry.Clear()
 	h.AfterRetry.Clear()
+	h.CompleteAttempt.Clear()
 	h.Complete.Clear()
 }
 
+// IsEmpty returns if there are no handlers in any of the handlerlists.
+func (h *Handlers) IsEmpty() bool {
+	if h.Validate.Len() != 0 {
+		return false
+	}
+	if h.Build.Len() != 0 {
+		return false
+	}
+	if h.BuildStream.Len() != 0 {
+		return false
+	}
+	if h.Send.Len() != 0 {
+		return false
+	}
+	if h.Sign.Len() != 0 {
+		return false
+	}
+	if h.Unmarshal.Len() != 0 {
+		return false
+	}
+	if h.UnmarshalStream.Len() != 0 {
+		return false
+	}
+	if h.UnmarshalMeta.Len() != 0 {
+		return false
+	}
+	if h.UnmarshalError.Len() != 0 {
+		return false
+	}
+	if h.ValidateResponse.Len() != 0 {
+		return false
+	}
+	if h.Retry.Len() != 0 {
+		return false
+	}
+	if h.AfterRetry.Len() != 0 {
+		return false
+	}
+	if h.CompleteAttempt.Len() != 0 {
+		return false
+	}
+	if h.Complete.Len() != 0 {
+		return false
+	}
+
+	return true
+}
+
 // A HandlerListRunItem represents an entry in the HandlerList which
 // is being run.
 type HandlerListRunItem struct {
@@ -272,3 +326,18 @@ func MakeAddToUserAgentFreeFormHandler(s string) func(*Request) {
 		AddToUserAgent(r, s)
 	}
 }
+
+// WithSetRequestHeaders updates the operation request's HTTP header to contain
+// the header key value pairs provided. If the header key already exists in the
+// request's HTTP header set, the existing value(s) will be replaced.
+func WithSetRequestHeaders(h map[string]string) Option {
+	return withRequestHeader(h).SetRequestHeaders
+}
+
+type withRequestHeader map[string]string
+
+func (h withRequestHeader) SetRequestHeaders(r *Request) {
+	for k, v := range h {
+		r.HTTPRequest.Header[k] = []string{v}
+	}
+}

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

@@ -15,12 +15,15 @@ type offsetReader struct {
 	closed bool
 }
 
-func newOffsetReader(buf io.ReadSeeker, offset int64) *offsetReader {
+func newOffsetReader(buf io.ReadSeeker, offset int64) (*offsetReader, error) {
 	reader := &offsetReader{}
-	buf.Seek(offset, sdkio.SeekStart)
+	_, err := buf.Seek(offset, sdkio.SeekStart)
+	if err != nil {
+		return nil, err
+	}
 
 	reader.buf = buf
-	return reader
+	return reader, nil
 }
 
 // Close will close the instance of the offset reader's access to
@@ -54,7 +57,9 @@ func (o *offsetReader) Seek(offset int64, whence int) (int64, error) {
 
 // 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 {
+func (o *offsetReader) CloseAndCopy(offset int64) (*offsetReader, error) {
-	o.Close()
+	if err := o.Close(); err != nil {
+		return nil, err
+	}
 	return newOffsetReader(o.buf, offset)
 }

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

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"fmt"
 	"io"
-	"net"
 	"net/http"
 	"net/url"
 	"reflect"
@@ -37,6 +36,10 @@ const (
 	// API request that was canceled. Requests given a aws.Context may
 	// return this error when canceled.
 	CanceledErrorCode = "RequestCanceled"
+
+	// ErrCodeRequestError is an error preventing the SDK from continuing to
+	// process the request.
+	ErrCodeRequestError = "RequestError"
 )
 
 // A Request is the service request to be made.
@@ -52,6 +55,7 @@ type Request struct {
 	HTTPRequest            *http.Request
 	HTTPResponse           *http.Response
 	Body                   io.ReadSeeker
+	streamingBody          io.ReadCloser
 	BodyStart              int64 // offset from beginning of Body that the request body starts
 	Params                 interface{}
 	Error                  error
@@ -65,6 +69,15 @@ type Request struct {
 	LastSignedAt           time.Time
 	DisableFollowRedirects bool
 
+	// Additional API error codes that should be retried. IsErrorRetryable
+	// will consider these codes in addition to its built in cases.
+	RetryErrorCodes []string
+
+	// Additional API error codes that should be retried with throttle backoff
+	// delay. IsErrorThrottle will consider these codes in addition to its
+	// built in cases.
+	ThrottleErrorCodes []string
+
 	// A value greater than 0 instructs the request to be signed as Presigned URL
 	// You should not set this field directly. Instead use Request's
 	// Presign or PresignRequest methods.
@@ -91,8 +104,12 @@ type Operation struct {
 	BeforePresignFn func(r *Request) error
 }
 
-// New returns a new Request pointer for the service API
+// New returns a new Request pointer for the service API operation and
-// operation and parameters.
+// parameters.
+//
+// A Retryer should be provided to direct how the request is retried. If
+// Retryer is nil, a default no retry value will be used. You can use
+// NoOpRetryer in the Client package to disable retry behavior directly.
 //
 // Params is any value of input parameters to be the request payload.
 // Data is pointer value to an object which the request's response
@@ -100,6 +117,10 @@ type Operation struct {
 func New(cfg aws.Config, clientInfo metadata.ClientInfo, handlers Handlers,
 	retryer Retryer, operation *Operation, params interface{}, data interface{}) *Request {
 
+	if retryer == nil {
+		retryer = noOpRetryer{}
+	}
+
 	method := operation.HTTPMethod
 	if method == "" {
 		method = "POST"
@@ -114,15 +135,12 @@ func New(cfg aws.Config, clientInfo metadata.ClientInfo, handlers Handlers,
 		err = awserr.New("InvalidEndpointURL", "invalid endpoint uri", err)
 	}
 
-	SanitizeHostForHeader(httpReq)
-
 	r := &Request{
 		Config:     cfg,
 		ClientInfo: clientInfo,
 		Handlers:   handlers.Copy(),
 
 		Retryer:     retryer,
-		AttemptTime: time.Now(),
 		Time:        time.Now(),
 		ExpireTime:  0,
 		Operation:   operation,
@@ -233,6 +251,10 @@ func (r *Request) WillRetry() bool {
 	return r.Error != nil && aws.BoolValue(r.Retryable) && r.RetryCount < r.MaxRetries()
 }
 
+func fmtAttemptCount(retryCount, maxRetries int) string {
+	return fmt.Sprintf("attempt %v/%v", retryCount, maxRetries)
+}
+
 // ParamsFilled returns if the request's parameters have been populated
 // and the parameters are valid. False is returned if no parameters are
 // provided or invalid.
@@ -261,12 +283,32 @@ func (r *Request) SetStringBody(s string) {
 // SetReaderBody will set the request's body reader.
 func (r *Request) SetReaderBody(reader io.ReadSeeker) {
 	r.Body = reader
-	r.BodyStart, _ = reader.Seek(0, sdkio.SeekCurrent) // Get the Bodies current offset.
+
+	if aws.IsReaderSeekable(reader) {
+		var err error
+		// Get the Bodies current offset so retries will start from the same
+		// initial position.
+		r.BodyStart, err = reader.Seek(0, sdkio.SeekCurrent)
+		if err != nil {
+			r.Error = awserr.New(ErrCodeSerialization,
+				"failed to determine start of request body", err)
+			return
+		}
+	}
 	r.ResetBody()
 }
 
+// SetStreamingBody set the reader to be used for the request that will stream
+// bytes to the server. Request's Body must not be set to any reader.
+func (r *Request) SetStreamingBody(reader io.ReadCloser) {
+	r.streamingBody = reader
+	r.SetReaderBody(aws.ReadSeekCloser(reader))
+}
+
 // Presign returns the request's signed URL. Error will be returned
-// if the signing fails.
+// if the signing fails. The expire parameter is only used for presigned Amazon
+// S3 API requests. All other AWS services will use a fixed expiration
+// time of 15 minutes.
 //
 // It is invalid to create a presigned URL with a expire duration 0 or less. An
 // error is returned if expire duration is 0 or less.
@@ -283,7 +325,9 @@ func (r *Request) Presign(expire time.Duration) (string, error) {
 }
 
 // PresignRequest behaves just like presign, with the addition of returning a
-// set of headers that were signed.
+// set of headers that were signed. The expire parameter is only used for
+// presigned Amazon S3 API requests. All other AWS services will use a fixed
+// expiration time of 15 minutes.
 //
 // It is invalid to create a presigned URL with a expire duration 0 or less. An
 // error is returned if expire duration is 0 or less.
@@ -328,16 +372,15 @@ func getPresignedURL(r *Request, expire time.Duration) (string, http.Header, err
 	return r.HTTPRequest.URL.String(), r.SignedHeaderVals, nil
 }
 
-func debugLogReqError(r *Request, stage string, retrying bool, err error) {
+const (
+	notRetrying = "not retrying"
+)
+
+func debugLogReqError(r *Request, stage, retryStr string, err error) {
 	if !r.Config.LogLevel.Matches(aws.LogDebugWithRequestErrors) {
 		return
 	}
 
-	retryStr := "not retrying"
-	if retrying {
-		retryStr = "will retry"
-	}
-
 	r.Config.Logger.Log(fmt.Sprintf("DEBUG: %s %s/%s failed, %s, error %v",
 		stage, r.ClientInfo.ServiceName, r.Operation.Name, retryStr, err))
 }
@@ -356,12 +399,12 @@ func (r *Request) Build() error {
 	if !r.built {
 		r.Handlers.Validate.Run(r)
 		if r.Error != nil {
-			debugLogReqError(r, "Validate Request", false, r.Error)
+			debugLogReqError(r, "Validate Request", notRetrying, r.Error)
 			return r.Error
 		}
 		r.Handlers.Build.Run(r)
 		if r.Error != nil {
-			debugLogReqError(r, "Build Request", false, r.Error)
+			debugLogReqError(r, "Build Request", notRetrying, r.Error)
 			return r.Error
 		}
 		r.built = true
@@ -377,20 +420,30 @@ func (r *Request) Build() error {
 func (r *Request) Sign() error {
 	r.Build()
 	if r.Error != nil {
-		debugLogReqError(r, "Build Request", false, r.Error)
+		debugLogReqError(r, "Build Request", notRetrying, r.Error)
 		return r.Error
 	}
 
+	SanitizeHostForHeader(r.HTTPRequest)
+
 	r.Handlers.Sign.Run(r)
 	return r.Error
 }
 
-func (r *Request) getNextRequestBody() (io.ReadCloser, error) {
+func (r *Request) getNextRequestBody() (body io.ReadCloser, err error) {
+	if r.streamingBody != nil {
+		return r.streamingBody, nil
+	}
+
 	if r.safeBody != nil {
 		r.safeBody.Close()
 	}
 
-	r.safeBody = newOffsetReader(r.Body, r.BodyStart)
+	r.safeBody, err = newOffsetReader(r.Body, r.BodyStart)
+	if err != nil {
+		return nil, awserr.New(ErrCodeSerialization,
+			"failed to get next request body reader", err)
+	}
 
 	// 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
@@ -407,10 +460,10 @@ func (r *Request) getNextRequestBody() (io.ReadCloser, error) {
 	// Related golang/go#18257
 	l, err := aws.SeekerLen(r.Body)
 	if err != nil {
-		return nil, awserr.New(ErrCodeSerialization, "failed to compute request body size", err)
+		return nil, awserr.New(ErrCodeSerialization,
+			"failed to compute request body size", err)
 	}
 
-	var body io.ReadCloser
 	if l == 0 {
 		body = NoBody
 	} else if l > 0 {
@@ -462,80 +515,90 @@ func (r *Request) Send() error {
 		r.Handlers.Complete.Run(r)
 	}()
 
+	if err := r.Error; err != nil {
+		return err
+	}
+
 	for {
+		r.Error = nil
 		r.AttemptTime = time.Now()
-		if aws.BoolValue(r.Retryable) {
-			if r.Config.LogLevel.Matches(aws.LogDebugWithRequestRetries) {
-				r.Config.Logger.Log(fmt.Sprintf("DEBUG: Retrying Request %s/%s, attempt %d",
-					r.ClientInfo.ServiceName, r.Operation.Name, r.RetryCount))
-			}
 
-			// The previous http.Request will have a reference to the r.Body
+		if err := r.Sign(); err != nil {
-			// and the HTTP Client's Transport may still be reading from
+			debugLogReqError(r, "Sign Request", notRetrying, err)
-			// the request's body even though the Client's Do returned.
+			return err
-			r.HTTPRequest = copyHTTPRequest(r.HTTPRequest, nil)
-			r.ResetBody()
-
-			// Closing response body to ensure that no response body is leaked
-			// between retry attempts.
-			if r.HTTPResponse != nil && r.HTTPResponse.Body != nil {
-				r.HTTPResponse.Body.Close()
-			}
 		}
 
-		r.Sign()
+		if err := r.sendRequest(); err == nil {
-		if r.Error != nil {
+			return nil
+		}
+		r.Handlers.Retry.Run(r)
+		r.Handlers.AfterRetry.Run(r)
+
+		if r.Error != nil || !aws.BoolValue(r.Retryable) {
 			return r.Error
 		}
 
-		r.Retryable = nil
+		if err := r.prepareRetry(); err != nil {
-
+			r.Error = err
-		r.Handlers.Send.Run(r)
+			return err
-		if r.Error != nil {
-			if !shouldRetryCancel(r) {
-				return r.Error
-			}
-
-			err := r.Error
-			r.Handlers.Retry.Run(r)
-			r.Handlers.AfterRetry.Run(r)
-			if r.Error != nil {
-				debugLogReqError(r, "Send Request", false, err)
-				return r.Error
-			}
-			debugLogReqError(r, "Send Request", true, err)
-			continue
 		}
-		r.Handlers.UnmarshalMeta.Run(r)
+	}
-		r.Handlers.ValidateResponse.Run(r)
+}
-		if r.Error != nil {
-			r.Handlers.UnmarshalError.Run(r)
-			err := r.Error
 
-			r.Handlers.Retry.Run(r)
+func (r *Request) prepareRetry() error {
-			r.Handlers.AfterRetry.Run(r)
+	if r.Config.LogLevel.Matches(aws.LogDebugWithRequestRetries) {
-			if r.Error != nil {
+		r.Config.Logger.Log(fmt.Sprintf("DEBUG: Retrying Request %s/%s, attempt %d",
-				debugLogReqError(r, "Validate Response", false, err)
+			r.ClientInfo.ServiceName, r.Operation.Name, r.RetryCount))
-				return r.Error
+	}
-			}
-			debugLogReqError(r, "Validate Response", true, err)
-			continue
-		}
 
-		r.Handlers.Unmarshal.Run(r)
+	// The previous http.Request will have a reference to the r.Body
-		if r.Error != nil {
+	// and the HTTP Client's Transport may still be reading from
-			err := r.Error
+	// the request's body even though the Client's Do returned.
-			r.Handlers.Retry.Run(r)
+	r.HTTPRequest = copyHTTPRequest(r.HTTPRequest, nil)
-			r.Handlers.AfterRetry.Run(r)
+	r.ResetBody()
-			if r.Error != nil {
+	if err := r.Error; err != nil {
-				debugLogReqError(r, "Unmarshal Response", false, err)
+		return awserr.New(ErrCodeSerialization,
-				return r.Error
+			"failed to prepare body for retry", err)
-			}
-			debugLogReqError(r, "Unmarshal Response", true, err)
-			continue
-		}
 
-		break
+	}
+
+	// Closing response body to ensure that no response body is leaked
+	// between retry attempts.
+	if r.HTTPResponse != nil && r.HTTPResponse.Body != nil {
+		r.HTTPResponse.Body.Close()
+	}
+
+	return nil
+}
+
+func (r *Request) sendRequest() (sendErr error) {
+	defer r.Handlers.CompleteAttempt.Run(r)
+
+	r.Retryable = nil
+	r.Handlers.Send.Run(r)
+	if r.Error != nil {
+		debugLogReqError(r, "Send Request",
+			fmtAttemptCount(r.RetryCount, r.MaxRetries()),
+			r.Error)
+		return r.Error
+	}
+
+	r.Handlers.UnmarshalMeta.Run(r)
+	r.Handlers.ValidateResponse.Run(r)
+	if r.Error != nil {
+		r.Handlers.UnmarshalError.Run(r)
+		debugLogReqError(r, "Validate Response",
+			fmtAttemptCount(r.RetryCount, r.MaxRetries()),
+			r.Error)
+		return r.Error
+	}
+
+	r.Handlers.Unmarshal.Run(r)
+	if r.Error != nil {
+		debugLogReqError(r, "Unmarshal Response",
+			fmtAttemptCount(r.RetryCount, r.MaxRetries()),
+			r.Error)
+		return r.Error
 	}
 
 	return nil
@@ -561,32 +624,6 @@ 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 {
-		if awsErr.Code() == CanceledErrorCode {
-			return false
-		}
-		err := awsErr.OrigErr()
-		netErr, netOK := err.(net.Error)
-		timeoutErr = netOK && netErr.Temporary()
-		if urlErr, ok := err.(*url.Error); !timeoutErr && ok {
-			errStr = urlErr.Err.Error()
-		}
-	}
-
-	// There can be two types of canceled errors here.
-	// The first being a net.Error and the other being an error.
-	// If the request was timed out, we want to continue the retry
-	// process. Otherwise, return the canceled error.
-	return timeoutErr ||
-		(errStr != "net/http: request canceled" &&
-			errStr != "net/http: request canceled while waiting for connection")
-
-}
-
 // SanitizeHostForHeader removes default port from host and updates request.Host
 func SanitizeHostForHeader(r *http.Request) {
 	host := getHost(r)
@@ -602,6 +639,10 @@ func getHost(r *http.Request) string {
 		return r.Host
 	}
 
+	if r.URL == nil {
+		return ""
+	}
+
 	return r.URL.Host
 }
 

vendor/github.com/aws/aws-sdk-go/aws/request/request_1_8.go

@@ -4,6 +4,8 @@ package request
 
 import (
 	"net/http"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
 )
 
 // NoBody is a http.NoBody reader instructing Go HTTP client to not include
@@ -24,7 +26,8 @@ var NoBody = http.NoBody
 func (r *Request) ResetBody() {
 	body, err := r.getNextRequestBody()
 	if err != nil {
-		r.Error = err
+		r.Error = awserr.New(ErrCodeSerialization,
+			"failed to reset request body", err)
 		return
 	}
 

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

@@ -17,11 +17,13 @@ import (
 // does the pagination between API operations, and Paginator defines the
 // configuration that will be used per page request.
 //
-//     cont := true
+//     for p.Next() {
-//     for p.Next() && cont {
 //         data := p.Page().(*s3.ListObjectsOutput)
 //         // process the page's data
+//         // ...
+//         // break out of loop to stop fetching additional pages
 //     }
+//
 //     return p.Err()
 //
 // See service client API operation Pages methods for examples how the SDK will
@@ -146,7 +148,7 @@ func (r *Request) nextPageTokens() []interface{} {
 				return nil
 			}
 		case bool:
-			if v == false {
+			if !v {
 				return nil
 			}
 		}

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

@@ -1,32 +1,81 @@
 package request
 
 import (
+	"net"
+	"net/url"
+	"strings"
 	"time"
 
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/awserr"
 )
 
-// Retryer is an interface to control retry logic for a given service.
+// Retryer provides the interface drive the SDK's request retry behavior. The
-// The default implementation used by most services is the client.DefaultRetryer
+// Retryer implementation is responsible for implementing exponential backoff,
-// structure, which contains basic retry logic using exponential backoff.
+// and determine if a request API error should be retried.
+//
+// client.DefaultRetryer is the SDK's default implementation of the Retryer. It
+// uses the which uses the Request.IsErrorRetryable and Request.IsErrorThrottle
+// methods to determine if the request is retried.
 type Retryer interface {
+	// RetryRules return the retry delay that should be used by the SDK before
+	// making another request attempt for the failed request.
 	RetryRules(*Request) time.Duration
+
+	// ShouldRetry returns if the failed request is retryable.
+	//
+	// Implementations may consider request attempt count when determining if a
+	// request is retryable, but the SDK will use MaxRetries to limit the
+	// number of attempts a request are made.
 	ShouldRetry(*Request) bool
+
+	// MaxRetries is the number of times a request may be retried before
+	// failing.
 	MaxRetries() int
 }
 
-// WithRetryer sets a config Retryer value to the given Config returning it
+// WithRetryer sets a Retryer value to the given Config returning the Config
-// for chaining.
+// value for chaining. The value must not be nil.
 func WithRetryer(cfg *aws.Config, retryer Retryer) *aws.Config {
+	if retryer == nil {
+		if cfg.Logger != nil {
+			cfg.Logger.Log("ERROR: Request.WithRetryer called with nil retryer. Replacing with retry disabled Retryer.")
+		}
+		retryer = noOpRetryer{}
+	}
 	cfg.Retryer = retryer
 	return cfg
+
+}
+
+// noOpRetryer is a internal no op retryer used when a request is created
+// without a retryer.
+//
+// Provides a retryer that performs no retries.
+// It should be used when we do not want retries to be performed.
+type noOpRetryer struct{}
+
+// MaxRetries returns the number of maximum returns the service will use to make
+// an individual API; For NoOpRetryer the MaxRetries will always be zero.
+func (d noOpRetryer) MaxRetries() int {
+	return 0
+}
+
+// ShouldRetry will always return false for NoOpRetryer, as it should never retry.
+func (d noOpRetryer) ShouldRetry(_ *Request) bool {
+	return false
+}
+
+// RetryRules returns the delay duration before retrying this request again;
+// since NoOpRetryer does not retry, RetryRules always returns 0.
+func (d noOpRetryer) RetryRules(_ *Request) time.Duration {
+	return 0
 }
 
 // retryableCodes is a collection of service response codes which are retry-able
 // without any further action.
 var retryableCodes = map[string]struct{}{
-	"RequestError":            {},
+	ErrCodeRequestError:       {},
 	"RequestTimeout":          {},
 	ErrCodeResponseTimeout:    {},
 	"RequestTimeoutException": {}, // Glacier's flavor of RequestTimeout
@@ -34,12 +83,16 @@ var retryableCodes = map[string]struct{}{
 
 var throttleCodes = map[string]struct{}{
 	"ProvisionedThroughputExceededException": {},
+	"ThrottledException":                     {}, // SNS, XRay, ResourceGroupsTagging API
 	"Throttling":                             {},
 	"ThrottlingException":                    {},
 	"RequestLimitExceeded":                   {},
 	"RequestThrottled":                       {},
+	"RequestThrottledException":              {},
 	"TooManyRequestsException":               {}, // Lambda functions
 	"PriorRequestNotComplete":                {}, // Route53
+	"TransactionInProgressException":         {},
+	"EC2ThrottledException":                  {}, // EC2
 }
 
 // credsExpiredCodes is a collection of error codes which signify the credentials
@@ -74,10 +127,6 @@ var validParentCodes = map[string]struct{}{
 	ErrCodeRead:          {},
 }
 
-type temporaryError interface {
-	Temporary() bool
-}
-
 func isNestedErrorRetryable(parentErr awserr.Error) bool {
 	if parentErr == nil {
 		return false
@@ -96,7 +145,7 @@ func isNestedErrorRetryable(parentErr awserr.Error) bool {
 		return isCodeRetryable(aerr.Code())
 	}
 
-	if t, ok := err.(temporaryError); ok {
+	if t, ok := err.(temporary); ok {
 		return t.Temporary() || isErrConnectionReset(err)
 	}
 
@@ -106,32 +155,90 @@ func isNestedErrorRetryable(parentErr awserr.Error) bool {
 // IsErrorRetryable returns whether the error is retryable, based on its Code.
 // Returns false if error is nil.
 func IsErrorRetryable(err error) bool {
-	if err != nil {
+	if err == nil {
-		if aerr, ok := err.(awserr.Error); ok {
+		return false
-			return isCodeRetryable(aerr.Code()) || isNestedErrorRetryable(aerr)
+	}
-		}
+	return shouldRetryError(err)
+}
+
+type temporary interface {
+	Temporary() bool
+}
+
+func shouldRetryError(origErr error) bool {
+	switch err := origErr.(type) {
+	case awserr.Error:
+		if err.Code() == CanceledErrorCode {
+			return false
+		}
+		if isNestedErrorRetryable(err) {
+			return true
+		}
+
+		origErr := err.OrigErr()
+		var shouldRetry bool
+		if origErr != nil {
+			shouldRetry = shouldRetryError(origErr)
+			if err.Code() == ErrCodeRequestError && !shouldRetry {
+				return false
+			}
+		}
+		if isCodeRetryable(err.Code()) {
+			return true
+		}
+		return shouldRetry
+
+	case *url.Error:
+		if strings.Contains(err.Error(), "connection refused") {
+			// Refused connections should be retried as the service may not yet
+			// be running on the port. Go TCP dial considers refused
+			// connections as not temporary.
+			return true
+		}
+		// *url.Error only implements Temporary after golang 1.6 but since
+		// url.Error only wraps the error:
+		return shouldRetryError(err.Err)
+
+	case temporary:
+		if netErr, ok := err.(*net.OpError); ok && netErr.Op == "dial" {
+			return true
+		}
+		// If the error is temporary, we want to allow continuation of the
+		// retry process
+		return err.Temporary() || isErrConnectionReset(origErr)
+
+	case nil:
+		// `awserr.Error.OrigErr()` can be nil, meaning there was an error but
+		// because we don't know the cause, it is marked as retryable. See
+		// TestRequest4xxUnretryable for an example.
+		return true
+
+	default:
+		switch err.Error() {
+		case "net/http: request canceled",
+			"net/http: request canceled while waiting for connection":
+			// known 1.5 error case when an http request is cancelled
+			return false
+		}
+		// here we don't know the error; so we allow a retry.
+		return true
 	}
-	return false
 }
 
 // IsErrorThrottle returns whether the error is to be throttled based on its code.
 // Returns false if error is nil.
 func IsErrorThrottle(err error) bool {
-	if err != nil {
+	if aerr, ok := err.(awserr.Error); ok && aerr != nil {
-		if aerr, ok := err.(awserr.Error); ok {
+		return isCodeThrottle(aerr.Code())
-			return isCodeThrottle(aerr.Code())
-		}
 	}
 	return false
 }
 
-// IsErrorExpiredCreds returns whether the error code is a credential expiry error.
+// IsErrorExpiredCreds returns whether the error code is a credential expiry
-// Returns false if error is nil.
+// error. Returns false if error is nil.
 func IsErrorExpiredCreds(err error) bool {
-	if err != nil {
+	if aerr, ok := err.(awserr.Error); ok && aerr != nil {
-		if aerr, ok := err.(awserr.Error); ok {
+		return isCodeExpiredCreds(aerr.Code())
-			return isCodeExpiredCreds(aerr.Code())
-		}
 	}
 	return false
 }
@@ -141,17 +248,58 @@ func IsErrorExpiredCreds(err error) bool {
 //
 // Alias for the utility function IsErrorRetryable
 func (r *Request) IsErrorRetryable() bool {
+	if isErrCode(r.Error, r.RetryErrorCodes) {
+		return true
+	}
+
+	// HTTP response status code 501 should not be retried.
+	// 501 represents Not Implemented which means the request method is not
+	// supported by the server and cannot be handled.
+	if r.HTTPResponse != nil {
+		// HTTP response status code 500 represents internal server error and
+		// should be retried without any throttle.
+		if r.HTTPResponse.StatusCode == 500 {
+			return true
+		}
+	}
 	return IsErrorRetryable(r.Error)
 }
 
-// IsErrorThrottle returns whether the error is to be throttled based on its code.
+// IsErrorThrottle returns whether the error is to be throttled based on its
-// Returns false if the request has no Error set
+// code. Returns false if the request has no Error set.
 //
 // Alias for the utility function IsErrorThrottle
 func (r *Request) IsErrorThrottle() bool {
+	if isErrCode(r.Error, r.ThrottleErrorCodes) {
+		return true
+	}
+
+	if r.HTTPResponse != nil {
+		switch r.HTTPResponse.StatusCode {
+		case
+			429, // error caused due to too many requests
+			502, // Bad Gateway error should be throttled
+			503, // caused when service is unavailable
+			504: // error occurred due to gateway timeout
+			return true
+		}
+	}
+
 	return IsErrorThrottle(r.Error)
 }
 
+func isErrCode(err error, codes []string) bool {
+	if aerr, ok := err.(awserr.Error); ok && aerr != nil {
+		for _, code := range codes {
+			if code == aerr.Code() {
+				return true
+			}
+		}
+	}
+
+	return false
+}
+
 // IsErrorExpired returns whether the error code is a credential expiry error.
 // Returns false if the request has no Error set.
 //

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

@@ -17,6 +17,12 @@ const (
 	ParamMinValueErrCode = "ParamMinValueError"
 	// ParamMinLenErrCode is the error code for fields without enough elements.
 	ParamMinLenErrCode = "ParamMinLenError"
+	// ParamMaxLenErrCode is the error code for value being too long.
+	ParamMaxLenErrCode = "ParamMaxLenError"
+
+	// ParamFormatErrCode is the error code for a field with invalid
+	// format or characters.
+	ParamFormatErrCode = "ParamFormatInvalidError"
 )
 
 // Validator provides a way for types to perform validation logic on their
@@ -232,3 +238,49 @@ func NewErrParamMinLen(field string, min int) *ErrParamMinLen {
 func (e *ErrParamMinLen) MinLen() int {
 	return e.min
 }
+
+// An ErrParamMaxLen represents a maximum length parameter error.
+type ErrParamMaxLen struct {
+	errInvalidParam
+	max int
+}
+
+// NewErrParamMaxLen creates a new maximum length parameter error.
+func NewErrParamMaxLen(field string, max int, value string) *ErrParamMaxLen {
+	return &ErrParamMaxLen{
+		errInvalidParam: errInvalidParam{
+			code:  ParamMaxLenErrCode,
+			field: field,
+			msg:   fmt.Sprintf("maximum size of %v, %v", max, value),
+		},
+		max: max,
+	}
+}
+
+// MaxLen returns the field's required minimum length.
+func (e *ErrParamMaxLen) MaxLen() int {
+	return e.max
+}
+
+// An ErrParamFormat represents a invalid format parameter error.
+type ErrParamFormat struct {
+	errInvalidParam
+	format string
+}
+
+// NewErrParamFormat creates a new invalid format parameter error.
+func NewErrParamFormat(field string, format, value string) *ErrParamFormat {
+	return &ErrParamFormat{
+		errInvalidParam: errInvalidParam{
+			code:  ParamFormatErrCode,
+			field: field,
+			msg:   fmt.Sprintf("format %v, %v", format, value),
+		},
+		format: format,
+	}
+}
+
+// Format returns the field's required format.
+func (e *ErrParamFormat) Format() string {
+	return e.format
+}

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

@@ -0,0 +1,26 @@
+// +build go1.7
+
+package session
+
+import (
+	"net"
+	"net/http"
+	"time"
+)
+
+// Transport that should be used when a custom CA bundle is specified with the
+// SDK.
+func getCABundleTransport() *http.Transport {
+	return &http.Transport{
+		Proxy: http.ProxyFromEnvironment,
+		DialContext: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+			DualStack: true,
+		}).DialContext,
+		MaxIdleConns:          100,
+		IdleConnTimeout:       90 * time.Second,
+		TLSHandshakeTimeout:   10 * time.Second,
+		ExpectContinueTimeout: 1 * time.Second,
+	}
+}

vendor/github.com/aws/aws-sdk-go/aws/session/cabundle_transport_1_5.go

@@ -0,0 +1,22 @@
+// +build !go1.6,go1.5
+
+package session
+
+import (
+	"net"
+	"net/http"
+	"time"
+)
+
+// Transport that should be used when a custom CA bundle is specified with the
+// SDK.
+func getCABundleTransport() *http.Transport {
+	return &http.Transport{
+		Proxy: http.ProxyFromEnvironment,
+		Dial: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+		}).Dial,
+		TLSHandshakeTimeout: 10 * time.Second,
+	}
+}

vendor/github.com/aws/aws-sdk-go/aws/session/cabundle_transport_1_6.go

@@ -0,0 +1,23 @@
+// +build !go1.7,go1.6
+
+package session
+
+import (
+	"net"
+	"net/http"
+	"time"
+)
+
+// Transport that should be used when a custom CA bundle is specified with the
+// SDK.
+func getCABundleTransport() *http.Transport {
+	return &http.Transport{
+		Proxy: http.ProxyFromEnvironment,
+		Dial: (&net.Dialer{
+			Timeout:   30 * time.Second,
+			KeepAlive: 30 * time.Second,
+		}).Dial,
+		TLSHandshakeTimeout:   10 * time.Second,
+		ExpectContinueTimeout: 1 * time.Second,
+	}
+}

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

@@ -0,0 +1,267 @@
+package session
+
+import (
+	"fmt"
+	"os"
+	"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/credentials/processcreds"
+	"github.com/aws/aws-sdk-go/aws/credentials/stscreds"
+	"github.com/aws/aws-sdk-go/aws/defaults"
+	"github.com/aws/aws-sdk-go/aws/request"
+	"github.com/aws/aws-sdk-go/internal/shareddefaults"
+)
+
+func resolveCredentials(cfg *aws.Config,
+	envCfg envConfig, sharedCfg sharedConfig,
+	handlers request.Handlers,
+	sessOpts Options,
+) (*credentials.Credentials, error) {
+
+	switch {
+	case len(sessOpts.Profile) != 0:
+		// User explicitly provided an Profile in the session's configuration
+		// so load that profile from shared config first.
+		// Github(aws/aws-sdk-go#2727)
+		return resolveCredsFromProfile(cfg, envCfg, sharedCfg, handlers, sessOpts)
+
+	case envCfg.Creds.HasKeys():
+		// Environment credentials
+		return credentials.NewStaticCredentialsFromCreds(envCfg.Creds), nil
+
+	case len(envCfg.WebIdentityTokenFilePath) != 0:
+		// Web identity token from environment, RoleARN required to also be
+		// set.
+		return assumeWebIdentity(cfg, handlers,
+			envCfg.WebIdentityTokenFilePath,
+			envCfg.RoleARN,
+			envCfg.RoleSessionName,
+		)
+
+	default:
+		// Fallback to the "default" credential resolution chain.
+		return resolveCredsFromProfile(cfg, envCfg, sharedCfg, handlers, sessOpts)
+	}
+}
+
+// WebIdentityEmptyRoleARNErr will occur if 'AWS_WEB_IDENTITY_TOKEN_FILE' was set but
+// 'AWS_ROLE_ARN' was not set.
+var WebIdentityEmptyRoleARNErr = awserr.New(stscreds.ErrCodeWebIdentity, "role ARN is not set", nil)
+
+// WebIdentityEmptyTokenFilePathErr will occur if 'AWS_ROLE_ARN' was set but
+// 'AWS_WEB_IDENTITY_TOKEN_FILE' was not set.
+var WebIdentityEmptyTokenFilePathErr = awserr.New(stscreds.ErrCodeWebIdentity, "token file path is not set", nil)
+
+func assumeWebIdentity(cfg *aws.Config, handlers request.Handlers,
+	filepath string,
+	roleARN, sessionName string,
+) (*credentials.Credentials, error) {
+
+	if len(filepath) == 0 {
+		return nil, WebIdentityEmptyTokenFilePathErr
+	}
+
+	if len(roleARN) == 0 {
+		return nil, WebIdentityEmptyRoleARNErr
+	}
+
+	creds := stscreds.NewWebIdentityCredentials(
+		&Session{
+			Config:   cfg,
+			Handlers: handlers.Copy(),
+		},
+		roleARN,
+		sessionName,
+		filepath,
+	)
+
+	return creds, nil
+}
+
+func resolveCredsFromProfile(cfg *aws.Config,
+	envCfg envConfig, sharedCfg sharedConfig,
+	handlers request.Handlers,
+	sessOpts Options,
+) (creds *credentials.Credentials, err error) {
+
+	switch {
+	case sharedCfg.SourceProfile != nil:
+		// Assume IAM role with credentials source from a different profile.
+		creds, err = resolveCredsFromProfile(cfg, envCfg,
+			*sharedCfg.SourceProfile, handlers, sessOpts,
+		)
+
+	case sharedCfg.Creds.HasKeys():
+		// Static Credentials from Shared Config/Credentials file.
+		creds = credentials.NewStaticCredentialsFromCreds(
+			sharedCfg.Creds,
+		)
+
+	case len(sharedCfg.CredentialProcess) != 0:
+		// Get credentials from CredentialProcess
+		creds = processcreds.NewCredentials(sharedCfg.CredentialProcess)
+
+	case len(sharedCfg.CredentialSource) != 0:
+		creds, err = resolveCredsFromSource(cfg, envCfg,
+			sharedCfg, handlers, sessOpts,
+		)
+
+	case len(sharedCfg.WebIdentityTokenFile) != 0:
+		// Credentials from Assume Web Identity token require an IAM Role, and
+		// that roll will be assumed. May be wrapped with another assume role
+		// via SourceProfile.
+		return assumeWebIdentity(cfg, handlers,
+			sharedCfg.WebIdentityTokenFile,
+			sharedCfg.RoleARN,
+			sharedCfg.RoleSessionName,
+		)
+
+	default:
+		// Fallback to default credentials provider, include mock errors for
+		// the credential chain so user can identify why credentials failed to
+		// be retrieved.
+		creds = 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),
+			},
+		})
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	if len(sharedCfg.RoleARN) > 0 {
+		cfgCp := *cfg
+		cfgCp.Credentials = creds
+		return credsFromAssumeRole(cfgCp, handlers, sharedCfg, sessOpts)
+	}
+
+	return creds, nil
+}
+
+// valid credential source values
+const (
+	credSourceEc2Metadata  = "Ec2InstanceMetadata"
+	credSourceEnvironment  = "Environment"
+	credSourceECSContainer = "EcsContainer"
+)
+
+func resolveCredsFromSource(cfg *aws.Config,
+	envCfg envConfig, sharedCfg sharedConfig,
+	handlers request.Handlers,
+	sessOpts Options,
+) (creds *credentials.Credentials, err error) {
+
+	switch sharedCfg.CredentialSource {
+	case credSourceEc2Metadata:
+		p := defaults.RemoteCredProvider(*cfg, handlers)
+		creds = credentials.NewCredentials(p)
+
+	case credSourceEnvironment:
+		creds = credentials.NewStaticCredentialsFromCreds(envCfg.Creds)
+
+	case credSourceECSContainer:
+		if len(os.Getenv(shareddefaults.ECSCredsProviderEnvVar)) == 0 {
+			return nil, ErrSharedConfigECSContainerEnvVarEmpty
+		}
+
+		p := defaults.RemoteCredProvider(*cfg, handlers)
+		creds = credentials.NewCredentials(p)
+
+	default:
+		return nil, ErrSharedConfigInvalidCredSource
+	}
+
+	return creds, nil
+}
+
+func credsFromAssumeRole(cfg aws.Config,
+	handlers request.Handlers,
+	sharedCfg sharedConfig,
+	sessOpts Options,
+) (*credentials.Credentials, error) {
+
+	if len(sharedCfg.MFASerial) != 0 && sessOpts.AssumeRoleTokenProvider == nil {
+		// AssumeRole Token provider is required if doing Assume Role
+		// with MFA.
+		return nil, AssumeRoleTokenProviderNotSetError{}
+	}
+
+	return stscreds.NewCredentials(
+		&Session{
+			Config:   &cfg,
+			Handlers: handlers.Copy(),
+		},
+		sharedCfg.RoleARN,
+		func(opt *stscreds.AssumeRoleProvider) {
+			opt.RoleSessionName = sharedCfg.RoleSessionName
+
+			if sessOpts.AssumeRoleDuration == 0 &&
+				sharedCfg.AssumeRoleDuration != nil &&
+				*sharedCfg.AssumeRoleDuration/time.Minute > 15 {
+				opt.Duration = *sharedCfg.AssumeRoleDuration
+			} else if sessOpts.AssumeRoleDuration != 0 {
+				opt.Duration = sessOpts.AssumeRoleDuration
+			}
+
+			// Assume role with external ID
+			if len(sharedCfg.ExternalID) > 0 {
+				opt.ExternalID = aws.String(sharedCfg.ExternalID)
+			}
+
+			// Assume role with MFA
+			if len(sharedCfg.MFASerial) > 0 {
+				opt.SerialNumber = aws.String(sharedCfg.MFASerial)
+				opt.TokenProvider = sessOpts.AssumeRoleTokenProvider
+			}
+		},
+	), nil
+}
+
+// AssumeRoleTokenProviderNotSetError is an error returned when creating a
+// session when the MFAToken option is not set when shared config is configured
+// load assume a role with an MFA token.
+type AssumeRoleTokenProviderNotSetError struct{}
+
+// Code is the short id of the error.
+func (e AssumeRoleTokenProviderNotSetError) Code() string {
+	return "AssumeRoleTokenProviderNotSetError"
+}
+
+// Message is the description of the error
+func (e AssumeRoleTokenProviderNotSetError) Message() string {
+	return fmt.Sprintf("assume role with MFA enabled, but AssumeRoleTokenProvider session option not set.")
+}
+
+// OrigErr is the underlying error that caused the failure.
+func (e AssumeRoleTokenProviderNotSetError) OrigErr() error {
+	return nil
+}
+
+// Error satisfies the error interface.
+func (e AssumeRoleTokenProviderNotSetError) Error() string {
+	return awserr.SprintError(e.Code(), e.Message(), "", nil)
+}
+
+type credProviderError struct {
+	Err error
+}
+
+func (c credProviderError) Retrieve() (credentials.Value, error) {
+	return credentials.Value{}, c.Err
+}
+func (c credProviderError) IsExpired() bool {
+	return true
+}

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

@@ -1,97 +1,93 @@
 /*
-Package session provides configuration for the SDK's service clients.
+Package session provides configuration for the SDK's service clients. Sessions
-
+can be shared across service clients that share the same base configuration.
-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.
+modified. Sessions should be cached when possible, because creating a new
-Creating service clients concurrently from a shared Session is safe.
+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.
 
-Sessions from Shared Config
+Sessions options 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
-SharedConfigEnable 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
+(~/.aws/credentials) files. Using the NewSessionWithOptions with
-more information.
+SharedConfigState set to SharedConfigEnable will create the session as if the
+AWS_SDK_LOAD_CONFIG environment variable was set.
 
-Create a Session with the default config and request handlers. With credentials
+Credential and config loading order
-region, and profile loaded from the environment and shared config automatically.
+
-Requires the AWS_PROFILE to be set, or "default" is used.
+The Session will attempt to load configuration and credentials from the
+environment, configuration files, and other credential sources. The order
+configuration is loaded in is:
+
+  * Environment Variables
+  * Shared Credentials file
+  * Shared Configuration file (if SharedConfig is enabled)
+  * EC2 Instance Metadata (credentials only)
+
+The Environment variables for credentials will have precedence over shared
+config even if SharedConfig is enabled. To override this behavior, and use
+shared config credentials instead specify the session.Options.Profile, (e.g.
+when using credential_source=Environment to assume a role).
+
+  sess, err := session.NewSessionWithOptions(session.Options{
+	  Profile: "myProfile",
+  })
+
+Creating Sessions
+
+Creating a Session without additional options will load credentials region, and
+profile loaded from the environment and shared config automatically. See,
+"Environment Variables" section for information on environment variables used
+by Session.
 
 	// Create Session
-	sess := session.Must(session.NewSession())
+	sess, err := session.NewSession()
+
+
+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.
 
 	// Create a Session with a custom region
-	sess := session.Must(session.NewSession(&aws.Config{
+	sess, err := session.NewSession(&aws.Config{
-		Region: aws.String("us-east-1"),
+		Region: aws.String("us-west-2"),
-	}))
+	})
 
-	// Create a S3 client instance from a session
+Use NewSessionWithOptions to provide additional configuration driving how the
-	sess := session.Must(session.NewSession())
+Session's configuration will be loaded. Such as, specifying shared config
-
+profile, or override the shared config state,  (AWS_SDK_LOAD_CONFIG).
-	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 := session.Must(session.NewSessionWithOptions(session.Options{
+	sess, err := session.NewSessionWithOptions(session.Options{
 		// Options
-	}))
+	})
 
-	// Specify profile to load for the session's config
+	sess, err := session.NewSessionWithOptions(session.Options{
-	sess := session.Must(session.NewSessionWithOptions(session.Options{
+		// Specify profile to load for the session's config
-		 Profile: "profile_name",
+		Profile: "profile_name",
-	}))
 
-	// Specify profile for config and region for requests
+		// Provide SDK Config options, such as Region.
-	sess := session.Must(session.NewSessionWithOptions(session.Options{
+		Config: aws.Config{
-		 Config: aws.Config{Region: aws.String("us-east-1")},
+			Region: aws.String("us-west-2"),
-		 Profile: "profile_name",
+		},
-	}))
 
-	// Force enable Shared Config support
+		// Force enable Shared Config support
-	sess := session.Must(session.NewSessionWithOptions(session.Options{
 		SharedConfigState: session.SharedConfigEnable,
-	}))
+	})
 
 Adding Handlers
 
-You can add handlers to a session for processing HTTP requests. All service
+You can add handlers to a session to decorate API operation, (e.g. adding HTTP
-clients that use the session inherit the handlers. For example, the following
+headers). All clients that use the Session receive a copy of the Session's
-handler logs every request and its payload made by a service client:
+handlers. For example, the following request handler added to the Session logs
+every requests made.
 
 	// Create a session, and add additional handlers for all service
 	// clients created with the Session to inherit. Adds logging handler.
@@ -99,22 +95,15 @@ handler logs every request and its payload made by a service client:
 
 	sess.Handlers.Send.PushFront(func(r *request.Request) {
 		// Log every request made and its payload
-		logger.Println("Request: %s/%s, Payload: %s",
+		logger.Printf("Request: %s/%s, Params: %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)
+By default the SDK will only load the shared credentials file's
-credentials values, and all other config is provided by the environment variables,
+(~/.aws/credentials) credentials values, and all other config is provided by
-SDK defaults, and user provided aws.Config values.
+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
@@ -125,24 +114,31 @@ 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 config file (~/.aws/config).
+credentials file (~/.aws/credentials) over those in the shared config file
+(~/.aws/config).
 
-Credentials are the values the SDK should use for authenticating requests with
+Credentials are the values the SDK uses to authenticating requests with AWS
-AWS Services. They are from a configuration file will need to include both
+Services. When specified in a file, both aws_access_key_id and
-aws_access_key_id and aws_secret_access_key must be provided together in the
+aws_secret_access_key must be provided together in the same file to be
-same file to be considered valid. The values will be ignored if not a complete
+considered valid. They will be ignored if both are not present.
-group. aws_session_token is an optional field that can be provided if both of
+aws_session_token is an optional field that can be provided in addition to the
-the other two fields are also provided.
+other two fields.
 
 	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
+	; region only supported if SharedConfigEnabled.
-a set of credentials provided in a config file via the source_profile field.
+	region = us-east-1
-Both "role_arn" and "source_profile" are required. The SDK supports assuming
+
-a role with MFA token if the session option AssumeRoleTokenProvider
+Assume Role configuration
-is set.
+
+The role_arn field allows you to configure the SDK to assume an IAM role using
+a set of credentials from another source. Such as when paired with static
+credentials, "profile_source", "credential_process", or "credential_source"
+fields. If "role_arn" is provided, a source of credentials must also be
+specified, such as "source_profile", "credential_source", or
+"credential_process".
 
 	role_arn = arn:aws:iam::<account_number>:role/<role_name>
 	source_profile = profile_with_creds
@@ -150,40 +146,16 @@ is set.
 	mfa_serial = <serial or mfa arn>
 	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
+The SDK supports assuming a role with MFA token. If "mfa_serial" is set, you
-
+must also set the Session Option.AssumeRoleTokenProvider. The Session will fail
-Assume Role with MFA token
+to load if the AssumeRoleTokenProvider is not specified.
-
-To create a session with support for assuming an IAM role with MFA set the
-session option AssumeRoleTokenProvider to a function that will prompt for the
-MFA token code when the SDK assumes the role and refreshes the role's credentials.
-This allows you to configure the SDK via the shared config to assumea role
-with MFA tokens.
-
-In order for the SDK to assume a role with MFA the SharedConfigState
-session option must be set to SharedConfigEnable, or AWS_SDK_LOAD_CONFIG
-environment variable set.
-
-The shared configuration instructs the SDK to assume an IAM role with MFA
-when the mfa_serial configuration field is set in the shared config
-(~/.aws/config) or shared credentials (~/.aws/credentials) file.
-
-If mfa_serial is set in the configuration, the SDK will assume the role, and
-the AssumeRoleTokenProvider session option is not set an an error will
-be returned when creating the session.
 
     sess := session.Must(session.NewSessionWithOptions(session.Options{
         AssumeRoleTokenProvider: stscreds.StdinTokenProvider,
     }))
 
-    // Create service client value configured for credentials
+To setup Assume Role outside of a session see the stscreds.AssumeRoleProvider
-    // from assumed role.
-    svc := s3.New(sess)
-
-To setup assume role outside of a session see the stscrds.AssumeRoleProvider
 documentation.
 
 Environment Variables

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

@@ -1,11 +1,15 @@
 package session
 
 import (
+	"fmt"
 	"os"
 	"strconv"
+	"strings"
 
+	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/credentials"
 	"github.com/aws/aws-sdk-go/aws/defaults"
+	"github.com/aws/aws-sdk-go/aws/endpoints"
 )
 
 // EnvProviderName provides a name of the provider when config is loaded from environment.
@@ -79,7 +83,7 @@ type envConfig struct {
 	//	AWS_CONFIG_FILE=$HOME/my_shared_config
 	SharedConfigFile string
 
-	// Sets the path to a custom Credentials Authroity (CA) Bundle PEM file
+	// Sets the path to a custom Credentials Authority (CA) Bundle PEM file
 	// that the SDK will use instead of the system's root CA bundle.
 	// Only use this if you want to configure the SDK to use a custom set
 	// of CAs.
@@ -98,15 +102,61 @@ type envConfig struct {
 	CustomCABundle string
 
 	csmEnabled  string
-	CSMEnabled  bool
+	CSMEnabled  *bool
 	CSMPort     string
+	CSMHost     string
 	CSMClientID string
+
+	// Enables endpoint discovery via environment variables.
+	//
+	//	AWS_ENABLE_ENDPOINT_DISCOVERY=true
+	EnableEndpointDiscovery *bool
+	enableEndpointDiscovery string
+
+	// Specifies the WebIdentity token the SDK should use to assume a role
+	// with.
+	//
+	//  AWS_WEB_IDENTITY_TOKEN_FILE=file_path
+	WebIdentityTokenFilePath string
+
+	// Specifies the IAM role arn to use when assuming an role.
+	//
+	//  AWS_ROLE_ARN=role_arn
+	RoleARN string
+
+	// Specifies the IAM role session name to use when assuming a role.
+	//
+	//  AWS_ROLE_SESSION_NAME=session_name
+	RoleSessionName string
+
+	// Specifies the STS Regional Endpoint flag for the SDK to resolve the endpoint
+	// for a service.
+	//
+	// AWS_STS_REGIONAL_ENDPOINTS=regional
+	// This can take value as `regional` or `legacy`
+	STSRegionalEndpoint endpoints.STSRegionalEndpoint
+
+	// Specifies the S3 Regional Endpoint flag for the SDK to resolve the
+	// endpoint for a service.
+	//
+	// AWS_S3_US_EAST_1_REGIONAL_ENDPOINT=regional
+	// This can take value as `regional` or `legacy`
+	S3UsEast1RegionalEndpoint endpoints.S3UsEast1RegionalEndpoint
+
+	// Specifies if the S3 service should allow ARNs to direct the region
+	// the client's requests are sent to.
+	//
+	// AWS_S3_USE_ARN_REGION=true
+	S3UseARNRegion bool
 }
 
 var (
 	csmEnabledEnvKey = []string{
 		"AWS_CSM_ENABLED",
 	}
+	csmHostEnvKey = []string{
+		"AWS_CSM_HOST",
+	}
 	csmPortEnvKey = []string{
 		"AWS_CSM_PORT",
 	}
@@ -125,6 +175,10 @@ var (
 		"AWS_SESSION_TOKEN",
 	}
 
+	enableEndpointDiscoveryEnvKey = []string{
+		"AWS_ENABLE_ENDPOINT_DISCOVERY",
+	}
+
 	regionEnvKeys = []string{
 		"AWS_REGION",
 		"AWS_DEFAULT_REGION", // Only read if AWS_SDK_LOAD_CONFIG is also set
@@ -139,6 +193,24 @@ var (
 	sharedConfigFileEnvKey = []string{
 		"AWS_CONFIG_FILE",
 	}
+	webIdentityTokenFilePathEnvKey = []string{
+		"AWS_WEB_IDENTITY_TOKEN_FILE",
+	}
+	roleARNEnvKey = []string{
+		"AWS_ROLE_ARN",
+	}
+	roleSessionNameEnvKey = []string{
+		"AWS_ROLE_SESSION_NAME",
+	}
+	stsRegionalEndpointKey = []string{
+		"AWS_STS_REGIONAL_ENDPOINTS",
+	}
+	s3UsEast1RegionalEndpoint = []string{
+		"AWS_S3_US_EAST_1_REGIONAL_ENDPOINT",
+	}
+	s3UseARNRegionEnvKey = []string{
+		"AWS_S3_USE_ARN_REGION",
+	}
 )
 
 // loadEnvConfig retrieves the SDK's environment configuration.
@@ -147,7 +219,7 @@ var (
 // 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 {
+func loadEnvConfig() (envConfig, error) {
 	enableSharedConfig, _ := strconv.ParseBool(os.Getenv("AWS_SDK_LOAD_CONFIG"))
 	return envConfigLoad(enableSharedConfig)
 }
@@ -158,30 +230,42 @@ func loadEnvConfig() envConfig {
 // 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 {
+func loadSharedEnvConfig() (envConfig, error) {
 	return envConfigLoad(true)
 }
 
-func envConfigLoad(enableSharedConfig bool) envConfig {
+func envConfigLoad(enableSharedConfig bool) (envConfig, error) {
 	cfg := envConfig{}
 
 	cfg.EnableSharedConfig = enableSharedConfig
 
-	setFromEnvVal(&cfg.Creds.AccessKeyID, credAccessEnvKey)
+	// Static environment credentials
-	setFromEnvVal(&cfg.Creds.SecretAccessKey, credSecretEnvKey)
+	var creds credentials.Value
-	setFromEnvVal(&cfg.Creds.SessionToken, credSessionEnvKey)
+	setFromEnvVal(&creds.AccessKeyID, credAccessEnvKey)
+	setFromEnvVal(&creds.SecretAccessKey, credSecretEnvKey)
+	setFromEnvVal(&creds.SessionToken, credSessionEnvKey)
+	if creds.HasKeys() {
+		// Require logical grouping of credentials
+		creds.ProviderName = EnvProviderName
+		cfg.Creds = creds
+	}
+
+	// Role Metadata
+	setFromEnvVal(&cfg.RoleARN, roleARNEnvKey)
+	setFromEnvVal(&cfg.RoleSessionName, roleSessionNameEnvKey)
+
+	// Web identity environment variables
+	setFromEnvVal(&cfg.WebIdentityTokenFilePath, webIdentityTokenFilePathEnvKey)
 
 	// CSM environment variables
 	setFromEnvVal(&cfg.csmEnabled, csmEnabledEnvKey)
+	setFromEnvVal(&cfg.CSMHost, csmHostEnvKey)
 	setFromEnvVal(&cfg.CSMPort, csmPortEnvKey)
 	setFromEnvVal(&cfg.CSMClientID, csmClientIDEnvKey)
-	cfg.CSMEnabled = len(cfg.csmEnabled) > 0
 
-	// Require logical grouping of credentials
+	if len(cfg.csmEnabled) != 0 {
-	if len(cfg.Creds.AccessKeyID) == 0 || len(cfg.Creds.SecretAccessKey) == 0 {
+		v, _ := strconv.ParseBool(cfg.csmEnabled)
-		cfg.Creds = credentials.Value{}
+		cfg.CSMEnabled = &v
-	} else {
-		cfg.Creds.ProviderName = EnvProviderName
 	}
 
 	regionKeys := regionEnvKeys
@@ -194,6 +278,12 @@ func envConfigLoad(enableSharedConfig bool) envConfig {
 	setFromEnvVal(&cfg.Region, regionKeys)
 	setFromEnvVal(&cfg.Profile, profileKeys)
 
+	// endpoint discovery is in reference to it being enabled.
+	setFromEnvVal(&cfg.enableEndpointDiscovery, enableEndpointDiscoveryEnvKey)
+	if len(cfg.enableEndpointDiscovery) > 0 {
+		cfg.EnableEndpointDiscovery = aws.Bool(cfg.enableEndpointDiscovery != "false")
+	}
+
 	setFromEnvVal(&cfg.SharedCredentialsFile, sharedCredsFileEnvKey)
 	setFromEnvVal(&cfg.SharedConfigFile, sharedConfigFileEnvKey)
 
@@ -206,12 +296,48 @@ func envConfigLoad(enableSharedConfig bool) envConfig {
 
 	cfg.CustomCABundle = os.Getenv("AWS_CA_BUNDLE")
 
-	return cfg
+	var err error
+	// STS Regional Endpoint variable
+	for _, k := range stsRegionalEndpointKey {
+		if v := os.Getenv(k); len(v) != 0 {
+			cfg.STSRegionalEndpoint, err = endpoints.GetSTSRegionalEndpoint(v)
+			if err != nil {
+				return cfg, fmt.Errorf("failed to load, %v from env config, %v", k, err)
+			}
+		}
+	}
+
+	// S3 Regional Endpoint variable
+	for _, k := range s3UsEast1RegionalEndpoint {
+		if v := os.Getenv(k); len(v) != 0 {
+			cfg.S3UsEast1RegionalEndpoint, err = endpoints.GetS3UsEast1RegionalEndpoint(v)
+			if err != nil {
+				return cfg, fmt.Errorf("failed to load, %v from env config, %v", k, err)
+			}
+		}
+	}
+
+	var s3UseARNRegion string
+	setFromEnvVal(&s3UseARNRegion, s3UseARNRegionEnvKey)
+	if len(s3UseARNRegion) != 0 {
+		switch {
+		case strings.EqualFold(s3UseARNRegion, "false"):
+			cfg.S3UseARNRegion = false
+		case strings.EqualFold(s3UseARNRegion, "true"):
+			cfg.S3UseARNRegion = true
+		default:
+			return envConfig{}, fmt.Errorf(
+				"invalid value for environment variable, %s=%s, need true or false",
+				s3UseARNRegionEnvKey[0], s3UseARNRegion)
+		}
+	}
+
+	return cfg, nil
 }
 
 func setFromEnvVal(dst *string, keys []string) {
 	for _, k := range keys {
-		if v := os.Getenv(k); len(v) > 0 {
+		if v := os.Getenv(k); len(v) != 0 {
 			*dst = v
 			break
 		}

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

@@ -8,19 +8,36 @@ import (
 	"io/ioutil"
 	"net/http"
 	"os"
+	"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/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/csm"
 	"github.com/aws/aws-sdk-go/aws/defaults"
 	"github.com/aws/aws-sdk-go/aws/endpoints"
 	"github.com/aws/aws-sdk-go/aws/request"
 )
 
+const (
+	// ErrCodeSharedConfig represents an error that occurs in the shared
+	// configuration logic
+	ErrCodeSharedConfig = "SharedConfigErr"
+)
+
+// ErrSharedConfigSourceCollision will be returned if a section contains both
+// source_profile and credential_source
+var ErrSharedConfigSourceCollision = awserr.New(ErrCodeSharedConfig, "only source profile or credential source can be specified, not both", nil)
+
+// ErrSharedConfigECSContainerEnvVarEmpty will be returned if the environment
+// variables are empty and Environment was set as the credential source
+var ErrSharedConfigECSContainerEnvVarEmpty = awserr.New(ErrCodeSharedConfig, "EcsContainer was specified as the credential_source, but 'AWS_CONTAINER_CREDENTIALS_RELATIVE_URI' was not set", nil)
+
+// ErrSharedConfigInvalidCredSource will be returned if an invalid credential source was provided
+var ErrSharedConfigInvalidCredSource = awserr.New(ErrCodeSharedConfig, "credential source values must be EcsContainer, Ec2InstanceMetadata, or Environment", nil)
+
 // A Session provides a central location to create service clients from and
 // store configurations and request handlers for those services.
 //
@@ -56,7 +73,7 @@ type Session struct {
 // func is called instead of waiting to receive an error until a request is made.
 func New(cfgs ...*aws.Config) *Session {
 	// load initial config from environment
-	envCfg := loadEnvConfig()
+	envCfg, envErr := loadEnvConfig()
 
 	if envCfg.EnableSharedConfig {
 		var cfg aws.Config
@@ -76,19 +93,28 @@ func New(cfgs ...*aws.Config) *Session {
 			// Session creation failed, need to report the error and prevent
 			// any requests from succeeding.
 			s = &Session{Config: defaults.Config()}
-			s.Config.MergeIn(cfgs...)
+			s.logDeprecatedNewSessionError(msg, err, cfgs)
-			s.Config.Logger.Log("ERROR:", msg, "Error:", err)
-			s.Handlers.Validate.PushBack(func(r *request.Request) {
-				r.Error = err
-			})
 		}
 
 		return s
 	}
 
 	s := deprecatedNewSession(cfgs...)
-	if envCfg.CSMEnabled {
+	if envErr != nil {
-		enableCSM(&s.Handlers, envCfg.CSMClientID, envCfg.CSMPort, s.Config.Logger)
+		msg := "failed to load env config"
+		s.logDeprecatedNewSessionError(msg, envErr, cfgs)
+	}
+
+	if csmCfg, err := loadCSMConfig(envCfg, []string{}); err != nil {
+		if l := s.Config.Logger; l != nil {
+			l.Log(fmt.Sprintf("ERROR: failed to load CSM configuration, %v", err))
+		}
+	} else if csmCfg.Enabled {
+		err := enableCSM(&s.Handlers, csmCfg, s.Config.Logger)
+		if err != nil {
+			msg := "failed to enable CSM"
+			s.logDeprecatedNewSessionError(msg, err, cfgs)
+		}
 	}
 
 	return s
@@ -107,7 +133,7 @@ func New(cfgs ...*aws.Config) *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
+// 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) {
 	opts := Options{}
@@ -191,6 +217,12 @@ type Options struct {
 	// the config enables assume role wit MFA via the mfa_serial field.
 	AssumeRoleTokenProvider func() (string, error)
 
+	// When the SDK's shared config is configured to assume a role this option
+	// may be provided to set the expiry duration of the STS credentials.
+	// Defaults to 15 minutes if not set as documented in the
+	// stscreds.AssumeRoleProvider.
+	AssumeRoleDuration time.Duration
+
 	// Reader for a custom Credentials Authority (CA) bundle in PEM format that
 	// the SDK will use instead of the default system's root CA bundle. Use this
 	// only if you want to replace the CA bundle the SDK uses for TLS requests.
@@ -205,6 +237,12 @@ type Options struct {
 	// to also enable this feature. CustomCABundle session option field has priority
 	// over the AWS_CA_BUNDLE environment variable, and will be used if both are set.
 	CustomCABundle io.Reader
+
+	// The handlers that the session and all API clients will be created with.
+	// This must be a complete set of handlers. Use the defaults.Handlers()
+	// function to initialize this value before changing the handlers to be
+	// used by the SDK.
+	Handlers request.Handlers
 }
 
 // NewSessionWithOptions returns a new Session created from SDK defaults, config files,
@@ -238,13 +276,20 @@ type Options struct {
 //     }))
 func NewSessionWithOptions(opts Options) (*Session, error) {
 	var envCfg envConfig
+	var err error
 	if opts.SharedConfigState == SharedConfigEnable {
-		envCfg = loadSharedEnvConfig()
+		envCfg, err = loadSharedEnvConfig()
+		if err != nil {
+			return nil, fmt.Errorf("failed to load shared config, %v", err)
+		}
 	} else {
-		envCfg = loadEnvConfig()
+		envCfg, err = loadEnvConfig()
+		if err != nil {
+			return nil, fmt.Errorf("failed to load environment config, %v", err)
+		}
 	}
 
-	if len(opts.Profile) > 0 {
+	if len(opts.Profile) != 0 {
 		envCfg.Profile = opts.Profile
 	}
 
@@ -310,27 +355,33 @@ func deprecatedNewSession(cfgs ...*aws.Config) *Session {
 	return s
 }
 
-func enableCSM(handlers *request.Handlers, clientID string, port string, logger aws.Logger) {
+func enableCSM(handlers *request.Handlers, cfg csmConfig, logger aws.Logger) error {
-	logger.Log("Enabling CSM")
+	if logger != nil {
-	if len(port) == 0 {
+		logger.Log("Enabling CSM")
-		port = csm.DefaultPort
 	}
 
-	r, err := csm.Start(clientID, "127.0.0.1:"+port)
+	r, err := csm.Start(cfg.ClientID, csm.AddressWithDefaults(cfg.Host, cfg.Port))
 	if err != nil {
-		return
+		return err
 	}
 	r.InjectHandlers(handlers)
+
+	return nil
 }
 
 func newSession(opts Options, envCfg envConfig, cfgs ...*aws.Config) (*Session, error) {
 	cfg := defaults.Config()
-	handlers := defaults.Handlers()
+
+	handlers := opts.Handlers
+	if handlers.IsEmpty() {
+		handlers = defaults.Handlers()
+	}
 
 	// Get a merged version of the user provided config to determine if
 	// credentials were.
 	userCfg := &aws.Config{}
 	userCfg.MergeIn(cfgs...)
+	cfg.MergeIn(userCfg)
 
 	// Ordered config files will be loaded in with later files overwriting
 	// previous config file values.
@@ -347,9 +398,17 @@ func newSession(opts Options, envCfg envConfig, cfgs ...*aws.Config) (*Session,
 	}
 
 	// Load additional config from file(s)
-	sharedCfg, err := loadSharedConfig(envCfg.Profile, cfgFiles)
+	sharedCfg, err := loadSharedConfig(envCfg.Profile, cfgFiles, envCfg.EnableSharedConfig)
 	if err != nil {
-		return nil, err
+		if len(envCfg.Profile) == 0 && !envCfg.EnableSharedConfig && (envCfg.Creds.HasKeys() || userCfg.Credentials != nil) {
+			// Special case where the user has not explicitly specified an AWS_PROFILE,
+			// or session.Options.profile, shared config is not enabled, and the
+			// environment has credentials, allow the shared config file to fail to
+			// load since the user has already provided credentials, and nothing else
+			// is required to be read file. Github(aws/aws-sdk-go#2455)
+		} else if _, ok := err.(SharedConfigProfileNotExistsError); !ok {
+			return nil, err
+		}
 	}
 
 	if err := mergeConfigSrcs(cfg, userCfg, envCfg, sharedCfg, handlers, opts); err != nil {
@@ -362,8 +421,16 @@ func newSession(opts Options, envCfg envConfig, cfgs ...*aws.Config) (*Session,
 	}
 
 	initHandlers(s)
-	if envCfg.CSMEnabled {
+
-		enableCSM(&s.Handlers, envCfg.CSMClientID, envCfg.CSMPort, s.Config.Logger)
+	if csmCfg, err := loadCSMConfig(envCfg, cfgFiles); err != nil {
+		if l := s.Config.Logger; l != nil {
+			l.Log(fmt.Sprintf("ERROR: failed to load CSM configuration, %v", err))
+		}
+	} else if csmCfg.Enabled {
+		err = enableCSM(&s.Handlers, csmCfg, s.Config.Logger)
+		if err != nil {
+			return nil, err
+		}
 	}
 
 	// Setup HTTP client with custom cert bundle if enabled
@@ -376,6 +443,46 @@ func newSession(opts Options, envCfg envConfig, cfgs ...*aws.Config) (*Session,
 	return s, nil
 }
 
+type csmConfig struct {
+	Enabled  bool
+	Host     string
+	Port     string
+	ClientID string
+}
+
+var csmProfileName = "aws_csm"
+
+func loadCSMConfig(envCfg envConfig, cfgFiles []string) (csmConfig, error) {
+	if envCfg.CSMEnabled != nil {
+		if *envCfg.CSMEnabled {
+			return csmConfig{
+				Enabled:  true,
+				ClientID: envCfg.CSMClientID,
+				Host:     envCfg.CSMHost,
+				Port:     envCfg.CSMPort,
+			}, nil
+		}
+		return csmConfig{}, nil
+	}
+
+	sharedCfg, err := loadSharedConfig(csmProfileName, cfgFiles, false)
+	if err != nil {
+		if _, ok := err.(SharedConfigProfileNotExistsError); !ok {
+			return csmConfig{}, err
+		}
+	}
+	if sharedCfg.CSMEnabled != nil && *sharedCfg.CSMEnabled == true {
+		return csmConfig{
+			Enabled:  true,
+			ClientID: sharedCfg.CSMClientID,
+			Host:     sharedCfg.CSMHost,
+			Port:     sharedCfg.CSMPort,
+		}, nil
+	}
+
+	return csmConfig{}, nil
+}
+
 func loadCustomCABundle(s *Session, bundle io.Reader) error {
 	var t *http.Transport
 	switch v := s.Config.HTTPClient.Transport.(type) {
@@ -388,7 +495,10 @@ func loadCustomCABundle(s *Session, bundle io.Reader) error {
 		}
 	}
 	if t == nil {
-		t = &http.Transport{}
+		// Nil transport implies `http.DefaultTransport` should be used. Since
+		// the SDK cannot modify, nor copy the `DefaultTransport` specifying
+		// the values the next closest behavior.
+		t = getCABundleTransport()
 	}
 
 	p, err := loadCertPool(bundle)
@@ -421,9 +531,11 @@ func loadCertPool(r io.Reader) (*x509.CertPool, error) {
 	return p, nil
 }
 
-func mergeConfigSrcs(cfg, userCfg *aws.Config, envCfg envConfig, sharedCfg sharedConfig, handlers request.Handlers, sessOpts Options) error {
+func mergeConfigSrcs(cfg, userCfg *aws.Config,
-	// Merge in user provided configuration
+	envCfg envConfig, sharedCfg sharedConfig,
-	cfg.MergeIn(userCfg)
+	handlers request.Handlers,
+	sessOpts Options,
+) error {
 
 	// Region if not already set by user
 	if len(aws.StringValue(cfg.Region)) == 0 {
@@ -434,101 +546,67 @@ func mergeConfigSrcs(cfg, userCfg *aws.Config, envCfg envConfig, sharedCfg share
 		}
 	}
 
-	// Configure credentials if not already set
+	if cfg.EnableEndpointDiscovery == nil {
-	if cfg.Credentials == credentials.AnonymousCredentials && userCfg.Credentials == nil {
+		if envCfg.EnableEndpointDiscovery != nil {
-		if len(envCfg.Creds.AccessKeyID) > 0 {
+			cfg.WithEndpointDiscovery(*envCfg.EnableEndpointDiscovery)
-			cfg.Credentials = credentials.NewStaticCredentialsFromCreds(
+		} else if envCfg.EnableSharedConfig && sharedCfg.EnableEndpointDiscovery != nil {
-				envCfg.Creds,
+			cfg.WithEndpointDiscovery(*sharedCfg.EnableEndpointDiscovery)
-			)
-		} else if envCfg.EnableSharedConfig && len(sharedCfg.AssumeRole.RoleARN) > 0 && sharedCfg.AssumeRoleSource != nil {
-			cfgCp := *cfg
-			cfgCp.Credentials = credentials.NewStaticCredentialsFromCreds(
-				sharedCfg.AssumeRoleSource.Creds,
-			)
-			if len(sharedCfg.AssumeRole.MFASerial) > 0 && sessOpts.AssumeRoleTokenProvider == nil {
-				// AssumeRole Token provider is required if doing Assume Role
-				// with MFA.
-				return AssumeRoleTokenProviderNotSetError{}
-			}
-			cfg.Credentials = stscreds.NewCredentials(
-				&Session{
-					Config:   &cfgCp,
-					Handlers: handlers.Copy(),
-				},
-				sharedCfg.AssumeRole.RoleARN,
-				func(opt *stscreds.AssumeRoleProvider) {
-					opt.RoleSessionName = sharedCfg.AssumeRole.RoleSessionName
-
-					// Assume role with external ID
-					if len(sharedCfg.AssumeRole.ExternalID) > 0 {
-						opt.ExternalID = aws.String(sharedCfg.AssumeRole.ExternalID)
-					}
-
-					// Assume role with MFA
-					if len(sharedCfg.AssumeRole.MFASerial) > 0 {
-						opt.SerialNumber = aws.String(sharedCfg.AssumeRole.MFASerial)
-						opt.TokenProvider = sessOpts.AssumeRoleTokenProvider
-					}
-				},
-			)
-		} 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),
-				},
-			})
 		}
 	}
 
+	// Regional Endpoint flag for STS endpoint resolving
+	mergeSTSRegionalEndpointConfig(cfg, []endpoints.STSRegionalEndpoint{
+		userCfg.STSRegionalEndpoint,
+		envCfg.STSRegionalEndpoint,
+		sharedCfg.STSRegionalEndpoint,
+		endpoints.LegacySTSEndpoint,
+	})
+
+	// Regional Endpoint flag for S3 endpoint resolving
+	mergeS3UsEast1RegionalEndpointConfig(cfg, []endpoints.S3UsEast1RegionalEndpoint{
+		userCfg.S3UsEast1RegionalEndpoint,
+		envCfg.S3UsEast1RegionalEndpoint,
+		sharedCfg.S3UsEast1RegionalEndpoint,
+		endpoints.LegacyS3UsEast1Endpoint,
+	})
+
+	// Configure credentials if not already set by the user when creating the
+	// Session.
+	if cfg.Credentials == credentials.AnonymousCredentials && userCfg.Credentials == nil {
+		creds, err := resolveCredentials(cfg, envCfg, sharedCfg, handlers, sessOpts)
+		if err != nil {
+			return err
+		}
+		cfg.Credentials = creds
+	}
+
+	cfg.S3UseARNRegion = userCfg.S3UseARNRegion
+	if cfg.S3UseARNRegion == nil {
+		cfg.S3UseARNRegion = &envCfg.S3UseARNRegion
+	}
+	if cfg.S3UseARNRegion == nil {
+		cfg.S3UseARNRegion = &sharedCfg.S3UseARNRegion
+	}
+
 	return nil
 }
 
-// AssumeRoleTokenProviderNotSetError is an error returned when creating a session when the
+func mergeSTSRegionalEndpointConfig(cfg *aws.Config, values []endpoints.STSRegionalEndpoint) {
-// MFAToken option is not set when shared config is configured load assume a
+	for _, v := range values {
-// role with an MFA token.
+		if v != endpoints.UnsetSTSEndpoint {
-type AssumeRoleTokenProviderNotSetError struct{}
+			cfg.STSRegionalEndpoint = v
-
+			break
-// Code is the short id of the error.
+		}
-func (e AssumeRoleTokenProviderNotSetError) Code() string {
+	}
-	return "AssumeRoleTokenProviderNotSetError"
 }
 
-// Message is the description of the error
+func mergeS3UsEast1RegionalEndpointConfig(cfg *aws.Config, values []endpoints.S3UsEast1RegionalEndpoint) {
-func (e AssumeRoleTokenProviderNotSetError) Message() string {
+	for _, v := range values {
-	return fmt.Sprintf("assume role with MFA enabled, but AssumeRoleTokenProvider session option not set.")
+		if v != endpoints.UnsetS3UsEast1Endpoint {
-}
+			cfg.S3UsEast1RegionalEndpoint = v
-
+			break
-// OrigErr is the underlying error that caused the failure.
+		}
-func (e AssumeRoleTokenProviderNotSetError) OrigErr() error {
+	}
-	return nil
-}
-
-// Error satisfies the error interface.
-func (e AssumeRoleTokenProviderNotSetError) Error() string {
-	return awserr.SprintError(e.Code(), e.Message(), "", nil)
-}
-
-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) {
@@ -539,7 +617,7 @@ 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, copying the config
 // and handlers. If any additional configs are provided they will be merged
 // on top of the Session's copied config.
 //
@@ -559,47 +637,67 @@ 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.
-func (s *Session) ClientConfig(serviceName string, cfgs ...*aws.Config) client.Config {
+func (s *Session) ClientConfig(service 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...)
 
-	var resolved endpoints.ResolvedEndpoint
-	var err error
-
 	region := aws.StringValue(s.Config.Region)
-
+	resolved, err := s.resolveEndpoint(service, region, s.Config)
-	if endpoint := aws.StringValue(s.Config.Endpoint); len(endpoint) != 0 {
+	if err != nil {
-		resolved.URL = endpoints.AddScheme(endpoint, aws.BoolValue(s.Config.DisableSSL))
+		s.Handlers.Validate.PushBack(func(r *request.Request) {
-		resolved.SigningRegion = region
+			if len(r.ClientInfo.Endpoint) != 0 {
-	} else {
+				// Error occurred while resolving endpoint, but the request
-		resolved, err = s.Config.EndpointResolver.EndpointFor(
+				// being invoked has had an endpoint specified after the client
-			serviceName, region,
+				// was created.
-			func(opt *endpoints.Options) {
+				return
-				opt.DisableSSL = aws.BoolValue(s.Config.DisableSSL)
+			}
-				opt.UseDualStack = aws.BoolValue(s.Config.UseDualStack)
+			r.Error = err
-
+		})
-				// Support the condition where the service is modeled but its
-				// endpoint metadata is not available.
-				opt.ResolveUnknownService = true
-			},
-		)
 	}
 
 	return client.Config{
 		Config:             s.Config,
 		Handlers:           s.Handlers,
+		PartitionID:        resolved.PartitionID,
 		Endpoint:           resolved.URL,
 		SigningRegion:      resolved.SigningRegion,
 		SigningNameDerived: resolved.SigningNameDerived,
 		SigningName:        resolved.SigningName,
-	}, err
+	}
+}
+
+func (s *Session) resolveEndpoint(service, region string, cfg *aws.Config) (endpoints.ResolvedEndpoint, error) {
+
+	if ep := aws.StringValue(cfg.Endpoint); len(ep) != 0 {
+		return endpoints.ResolvedEndpoint{
+			URL:           endpoints.AddScheme(ep, aws.BoolValue(cfg.DisableSSL)),
+			SigningRegion: region,
+		}, nil
+	}
+
+	resolved, err := cfg.EndpointResolver.EndpointFor(service, region,
+		func(opt *endpoints.Options) {
+			opt.DisableSSL = aws.BoolValue(cfg.DisableSSL)
+			opt.UseDualStack = aws.BoolValue(cfg.UseDualStack)
+			// Support for STSRegionalEndpoint where the STSRegionalEndpoint is
+			// provided in envConfig or sharedConfig with envConfig getting
+			// precedence.
+			opt.STSRegionalEndpoint = cfg.STSRegionalEndpoint
+
+			// Support for S3UsEast1RegionalEndpoint where the S3UsEast1RegionalEndpoint is
+			// provided in envConfig or sharedConfig with envConfig getting
+			// precedence.
+			opt.S3UsEast1RegionalEndpoint = cfg.S3UsEast1RegionalEndpoint
+
+			// Support the condition where the service is modeled but its
+			// endpoint metadata is not available.
+			opt.ResolveUnknownService = true
+		},
+	)
+	if err != nil {
+		return endpoints.ResolvedEndpoint{}, err
+	}
+
+	return resolved, nil
 }
 
 // ClientConfigNoResolveEndpoint is the same as ClientConfig with the exception
@@ -609,12 +707,9 @@ func (s *Session) ClientConfigNoResolveEndpoint(cfgs ...*aws.Config) client.Conf
 	s = s.Copy(cfgs...)
 
 	var resolved endpoints.ResolvedEndpoint
-
-	region := aws.StringValue(s.Config.Region)
-
 	if ep := aws.StringValue(s.Config.Endpoint); len(ep) > 0 {
 		resolved.URL = endpoints.AddScheme(ep, aws.BoolValue(s.Config.DisableSSL))
-		resolved.SigningRegion = region
+		resolved.SigningRegion = aws.StringValue(s.Config.Region)
 	}
 
 	return client.Config{
@@ -626,3 +721,14 @@ func (s *Session) ClientConfigNoResolveEndpoint(cfgs ...*aws.Config) client.Conf
 		SigningName:        resolved.SigningName,
 	}
 }
+
+// logDeprecatedNewSessionError function enables error handling for session
+func (s *Session) logDeprecatedNewSessionError(msg string, err error, cfgs []*aws.Config) {
+	// Session creation failed, need to report the error and prevent
+	// any requests from succeeding.
+	s.Config.MergeIn(cfgs...)
+	s.Config.Logger.Log("ERROR:", msg, "Error:", err)
+	s.Handlers.Validate.PushBack(func(r *request.Request) {
+		r.Error = err
+	})
+}

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

@@ -2,11 +2,12 @@ package session
 
 import (
 	"fmt"
-	"io/ioutil"
+	"time"
 
 	"github.com/aws/aws-sdk-go/aws/awserr"
 	"github.com/aws/aws-sdk-go/aws/credentials"
-	"github.com/go-ini/ini"
+	"github.com/aws/aws-sdk-go/aws/endpoints"
+	"github.com/aws/aws-sdk-go/internal/ini"
 )
 
 const (
@@ -16,68 +17,127 @@ const (
 	sessionTokenKey = `aws_session_token`     // optional
 
 	// Assume Role Credentials group
-	roleArnKey         = `role_arn`          // group required
+	roleArnKey             = `role_arn`          // group required
-	sourceProfileKey   = `source_profile`    // group required
+	sourceProfileKey       = `source_profile`    // group required (or credential_source)
-	externalIDKey      = `external_id`       // optional
+	credentialSourceKey    = `credential_source` // group required (or source_profile)
-	mfaSerialKey       = `mfa_serial`        // optional
+	externalIDKey          = `external_id`       // optional
-	roleSessionNameKey = `role_session_name` // optional
+	mfaSerialKey           = `mfa_serial`        // optional
+	roleSessionNameKey     = `role_session_name` // optional
+	roleDurationSecondsKey = "duration_seconds"  // optional
+
+	// CSM options
+	csmEnabledKey  = `csm_enabled`
+	csmHostKey     = `csm_host`
+	csmPortKey     = `csm_port`
+	csmClientIDKey = `csm_client_id`
 
 	// Additional Config fields
 	regionKey = `region`
 
+	// endpoint discovery group
+	enableEndpointDiscoveryKey = `endpoint_discovery_enabled` // optional
+
+	// External Credential Process
+	credentialProcessKey = `credential_process` // optional
+
+	// Web Identity Token File
+	webIdentityTokenFileKey = `web_identity_token_file` // optional
+
+	// Additional config fields for regional or legacy endpoints
+	stsRegionalEndpointSharedKey = `sts_regional_endpoints`
+
+	// Additional config fields for regional or legacy endpoints
+	s3UsEast1RegionalSharedKey = `s3_us_east_1_regional_endpoint`
+
 	// 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 {
+	// S3 ARN Region Usage
-	RoleARN         string
+	s3UseARNRegionKey = "s3_use_arn_region"
-	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
+	// Credentials values from the config file. Both aws_access_key_id and
-	// and aws_secret_access_key must be provided together in the same file
+	// aws_secret_access_key must be provided together in the same file to be
-	// to be considered valid. The values will be ignored if not a complete group.
+	// 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
+	// aws_session_token is an optional field that can be provided if both of
-	// other two fields are also provided.
+	// the other two fields are also provided.
 	//
 	//	aws_access_key_id
 	//	aws_secret_access_key
 	//	aws_session_token
 	Creds credentials.Value
 
-	AssumeRole       assumeRoleConfig
+	CredentialSource     string
-	AssumeRoleSource *sharedConfig
+	CredentialProcess    string
+	WebIdentityTokenFile string
 
-	// Region is the region the SDK should use for looking up AWS service endpoints
+	RoleARN            string
-	// and signing requests.
+	RoleSessionName    string
+	ExternalID         string
+	MFASerial          string
+	AssumeRoleDuration *time.Duration
+
+	SourceProfileName string
+	SourceProfile     *sharedConfig
+
+	// Region is the region the SDK should use for looking up AWS service
+	// endpoints and signing requests.
 	//
 	//	region
 	Region string
+
+	// EnableEndpointDiscovery can be enabled in the shared config by setting
+	// endpoint_discovery_enabled to true
+	//
+	//	endpoint_discovery_enabled = true
+	EnableEndpointDiscovery *bool
+
+	// CSM Options
+	CSMEnabled  *bool
+	CSMHost     string
+	CSMPort     string
+	CSMClientID string
+
+	// Specifies the Regional Endpoint flag for the SDK to resolve the endpoint for a service
+	//
+	// sts_regional_endpoints = regional
+	// This can take value as `LegacySTSEndpoint` or `RegionalSTSEndpoint`
+	STSRegionalEndpoint endpoints.STSRegionalEndpoint
+
+	// Specifies the Regional Endpoint flag for the SDK to resolve the endpoint for a service
+	//
+	// s3_us_east_1_regional_endpoint = regional
+	// This can take value as `LegacyS3UsEast1Endpoint` or `RegionalS3UsEast1Endpoint`
+	S3UsEast1RegionalEndpoint endpoints.S3UsEast1RegionalEndpoint
+
+	// Specifies if the S3 service should allow ARNs to direct the region
+	// the client's requests are sent to.
+	//
+	// s3_use_arn_region=true
+	S3UseARNRegion bool
 }
 
 type sharedConfigFile struct {
 	Filename string
-	IniData  *ini.File
+	IniData  ini.Sections
 }
 
-// loadSharedConfig retrieves the configuration from the list of files
+// loadSharedConfig retrieves the configuration from the list of files using
-// using the profile provided. The order the files are listed will determine
+// 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.
+// 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) {
+func loadSharedConfig(profile string, filenames []string, exOpts bool) (sharedConfig, error) {
 	if len(profile) == 0 {
 		profile = DefaultSharedConfigProfile
 	}
@@ -88,16 +148,11 @@ func loadSharedConfig(profile string, filenames []string) (sharedConfig, error)
 	}
 
 	cfg := sharedConfig{}
-	if err = cfg.setFromIniFiles(profile, files); err != nil {
+	profiles := map[string]struct{}{}
+	if err = cfg.setFromIniFiles(profiles, profile, files, exOpts); 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
 }
 
@@ -105,114 +160,283 @@ func loadSharedConfigIniFiles(filenames []string) ([]sharedConfigFile, error) {
 	files := make([]sharedConfigFile, 0, len(filenames))
 
 	for _, filename := range filenames {
-		b, err := ioutil.ReadFile(filename)
+		sections, err := ini.OpenFile(filename)
-		if err != nil {
+		if aerr, ok := err.(awserr.Error); ok && aerr.Code() == ini.ErrCodeUnableToReadFile {
 			// Skip files which can't be opened and read for whatever reason
 			continue
-		}
+		} else if err != nil {
-
-		f, err := ini.Load(b)
-		if err != nil {
 			return nil, SharedConfigLoadError{Filename: filename, Err: err}
 		}
 
 		files = append(files, sharedConfigFile{
-			Filename: filename, IniData: f,
+			Filename: filename, IniData: sections,
 		})
 	}
 
 	return files, nil
 }
 
-func (cfg *sharedConfig) setAssumeRoleSource(origProfile string, files []sharedConfigFile) error {
+func (cfg *sharedConfig) setFromIniFiles(profiles map[string]struct{}, profile string, files []sharedConfigFile, exOpts bool) 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.
+	var skippedFiles int
+	var profileNotFoundErr error
 	for _, f := range files {
-		if err := cfg.setFromIniFile(profile, f); err != nil {
+		if err := cfg.setFromIniFile(profile, f, exOpts); err != nil {
 			if _, ok := err.(SharedConfigProfileNotExistsError); ok {
-				// Ignore proviles missings
+				// Ignore profiles not defined in individual files.
+				profileNotFoundErr = err
+				skippedFiles++
 				continue
 			}
 			return err
 		}
 	}
+	if skippedFiles == len(files) {
+		// If all files were skipped because the profile is not found, return
+		// the original profile not found error.
+		return profileNotFoundErr
+	}
+
+	if _, ok := profiles[profile]; ok {
+		// if this is the second instance of the profile the Assume Role
+		// options must be cleared because they are only valid for the
+		// first reference of a profile. The self linked instance of the
+		// profile only have credential provider options.
+		cfg.clearAssumeRoleOptions()
+	} else {
+		// First time a profile has been seen, It must either be a assume role
+		// or credentials. Assert if the credential type requires a role ARN,
+		// the ARN is also set.
+		if err := cfg.validateCredentialsRequireARN(profile); err != nil {
+			return err
+		}
+	}
+	profiles[profile] = struct{}{}
+
+	if err := cfg.validateCredentialType(); err != nil {
+		return err
+	}
+
+	// Link source profiles for assume roles
+	if len(cfg.SourceProfileName) != 0 {
+		// Linked profile via source_profile ignore credential provider
+		// options, the source profile must provide the credentials.
+		cfg.clearCredentialOptions()
+
+		srcCfg := &sharedConfig{}
+		err := srcCfg.setFromIniFiles(profiles, cfg.SourceProfileName, files, exOpts)
+		if err != nil {
+			// SourceProfile that doesn't exist is an error in configuration.
+			if _, ok := err.(SharedConfigProfileNotExistsError); ok {
+				err = SharedConfigAssumeRoleError{
+					RoleARN:       cfg.RoleARN,
+					SourceProfile: cfg.SourceProfileName,
+				}
+			}
+			return err
+		}
+
+		if !srcCfg.hasCredentials() {
+			return SharedConfigAssumeRoleError{
+				RoleARN:       cfg.RoleARN,
+				SourceProfile: cfg.SourceProfileName,
+			}
+		}
+
+		cfg.SourceProfile = srcCfg
+	}
 
 	return nil
 }
 
-// setFromFile loads the configuration from the file using
+// setFromFile loads the configuration from the file using the profile
-// the profile provided. A sharedConfig pointer type value is used so that
+// provided. A sharedConfig pointer type value is used so that multiple config
-// multiple config file loadings can be chained.
+// 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
+// for incomplete grouped values in the config. Such as credentials. For
-// if a config file only includes aws_access_key_id but no aws_secret_access_key
+// example if a config file only includes aws_access_key_id but no
-// the aws_access_key_id will be ignored.
+// aws_secret_access_key the aws_access_key_id will be ignored.
-func (cfg *sharedConfig) setFromIniFile(profile string, file sharedConfigFile) error {
+func (cfg *sharedConfig) setFromIniFile(profile string, file sharedConfigFile, exOpts bool) error {
-	section, err := file.IniData.GetSection(profile)
+	section, ok := file.IniData.GetSection(profile)
-	if err != nil {
+	if !ok {
 		// Fallback to to alternate profile name: profile <name>
-		section, err = file.IniData.GetSection(fmt.Sprintf("profile %s", profile))
+		section, ok = file.IniData.GetSection(fmt.Sprintf("profile %s", profile))
-		if err != nil {
+		if !ok {
-			return SharedConfigProfileNotExistsError{Profile: profile, Err: err}
+			return SharedConfigProfileNotExistsError{Profile: profile, Err: nil}
 		}
 	}
 
+	if exOpts {
+		// Assume Role Parameters
+		updateString(&cfg.RoleARN, section, roleArnKey)
+		updateString(&cfg.ExternalID, section, externalIDKey)
+		updateString(&cfg.MFASerial, section, mfaSerialKey)
+		updateString(&cfg.RoleSessionName, section, roleSessionNameKey)
+		updateString(&cfg.SourceProfileName, section, sourceProfileKey)
+		updateString(&cfg.CredentialSource, section, credentialSourceKey)
+		updateString(&cfg.Region, section, regionKey)
+
+		if section.Has(roleDurationSecondsKey) {
+			d := time.Duration(section.Int(roleDurationSecondsKey)) * time.Second
+			cfg.AssumeRoleDuration = &d
+		}
+
+		if v := section.String(stsRegionalEndpointSharedKey); len(v) != 0 {
+			sre, err := endpoints.GetSTSRegionalEndpoint(v)
+			if err != nil {
+				return fmt.Errorf("failed to load %s from shared config, %s, %v",
+					stsRegionalEndpointSharedKey, file.Filename, err)
+			}
+			cfg.STSRegionalEndpoint = sre
+		}
+
+		if v := section.String(s3UsEast1RegionalSharedKey); len(v) != 0 {
+			sre, err := endpoints.GetS3UsEast1RegionalEndpoint(v)
+			if err != nil {
+				return fmt.Errorf("failed to load %s from shared config, %s, %v",
+					s3UsEast1RegionalSharedKey, file.Filename, err)
+			}
+			cfg.S3UsEast1RegionalEndpoint = sre
+		}
+	}
+
+	updateString(&cfg.CredentialProcess, section, credentialProcessKey)
+	updateString(&cfg.WebIdentityTokenFile, section, webIdentityTokenFileKey)
+
 	// Shared Credentials
-	akid := section.Key(accessKeyIDKey).String()
+	creds := credentials.Value{
-	secret := section.Key(secretAccessKey).String()
+		AccessKeyID:     section.String(accessKeyIDKey),
-	if len(akid) > 0 && len(secret) > 0 {
+		SecretAccessKey: section.String(secretAccessKey),
-		cfg.Creds = credentials.Value{
+		SessionToken:    section.String(sessionTokenKey),
-			AccessKeyID:     akid,
+		ProviderName:    fmt.Sprintf("SharedConfigCredentials: %s", file.Filename),
-			SecretAccessKey: secret,
+	}
-			SessionToken:    section.Key(sessionTokenKey).String(),
+	if creds.HasKeys() {
-			ProviderName:    fmt.Sprintf("SharedConfigCredentials: %s", file.Filename),
+		cfg.Creds = creds
-		}
 	}
 
-	// Assume Role
+	// Endpoint discovery
-	roleArn := section.Key(roleArnKey).String()
+	updateBoolPtr(&cfg.EnableEndpointDiscovery, section, enableEndpointDiscoveryKey)
-	srcProfile := section.Key(sourceProfileKey).String()
+
-	if len(roleArn) > 0 && len(srcProfile) > 0 {
+	// CSM options
-		cfg.AssumeRole = assumeRoleConfig{
+	updateBoolPtr(&cfg.CSMEnabled, section, csmEnabledKey)
-			RoleARN:         roleArn,
+	updateString(&cfg.CSMHost, section, csmHostKey)
-			SourceProfile:   srcProfile,
+	updateString(&cfg.CSMPort, section, csmPortKey)
-			ExternalID:      section.Key(externalIDKey).String(),
+	updateString(&cfg.CSMClientID, section, csmClientIDKey)
-			MFASerial:       section.Key(mfaSerialKey).String(),
+
-			RoleSessionName: section.Key(roleSessionNameKey).String(),
+	updateBool(&cfg.S3UseARNRegion, section, s3UseARNRegionKey)
-		}
+
+	return nil
+}
+
+func (cfg *sharedConfig) validateCredentialsRequireARN(profile string) error {
+	var credSource string
+
+	switch {
+	case len(cfg.SourceProfileName) != 0:
+		credSource = sourceProfileKey
+	case len(cfg.CredentialSource) != 0:
+		credSource = credentialSourceKey
+	case len(cfg.WebIdentityTokenFile) != 0:
+		credSource = webIdentityTokenFileKey
 	}
 
-	// Region
+	if len(credSource) != 0 && len(cfg.RoleARN) == 0 {
-	if v := section.Key(regionKey).String(); len(v) > 0 {
+		return CredentialRequiresARNError{
-		cfg.Region = v
+			Type:    credSource,
+			Profile: profile,
+		}
 	}
 
 	return nil
 }
 
+func (cfg *sharedConfig) validateCredentialType() error {
+	// Only one or no credential type can be defined.
+	if !oneOrNone(
+		len(cfg.SourceProfileName) != 0,
+		len(cfg.CredentialSource) != 0,
+		len(cfg.CredentialProcess) != 0,
+		len(cfg.WebIdentityTokenFile) != 0,
+	) {
+		return ErrSharedConfigSourceCollision
+	}
+
+	return nil
+}
+
+func (cfg *sharedConfig) hasCredentials() bool {
+	switch {
+	case len(cfg.SourceProfileName) != 0:
+	case len(cfg.CredentialSource) != 0:
+	case len(cfg.CredentialProcess) != 0:
+	case len(cfg.WebIdentityTokenFile) != 0:
+	case cfg.Creds.HasKeys():
+	default:
+		return false
+	}
+
+	return true
+}
+
+func (cfg *sharedConfig) clearCredentialOptions() {
+	cfg.CredentialSource = ""
+	cfg.CredentialProcess = ""
+	cfg.WebIdentityTokenFile = ""
+	cfg.Creds = credentials.Value{}
+}
+
+func (cfg *sharedConfig) clearAssumeRoleOptions() {
+	cfg.RoleARN = ""
+	cfg.ExternalID = ""
+	cfg.MFASerial = ""
+	cfg.RoleSessionName = ""
+	cfg.SourceProfileName = ""
+}
+
+func oneOrNone(bs ...bool) bool {
+	var count int
+
+	for _, b := range bs {
+		if b {
+			count++
+			if count > 1 {
+				return false
+			}
+		}
+	}
+
+	return true
+}
+
+// updateString will only update the dst with the value in the section key, key
+// is present in the section.
+func updateString(dst *string, section ini.Section, key string) {
+	if !section.Has(key) {
+		return
+	}
+	*dst = section.String(key)
+}
+
+// updateBool will only update the dst with the value in the section key, key
+// is present in the section.
+func updateBool(dst *bool, section ini.Section, key string) {
+	if !section.Has(key) {
+		return
+	}
+	*dst = section.Bool(key)
+}
+
+// updateBoolPtr will only update the dst with the value in the section key,
+// key is present in the section.
+func updateBoolPtr(dst **bool, section ini.Section, key string) {
+	if !section.Has(key) {
+		return
+	}
+	*dst = new(bool)
+	**dst = section.Bool(key)
+}
+
 // SharedConfigLoadError is an error for the shared config file failed to load.
 type SharedConfigLoadError struct {
 	Filename string
@@ -270,7 +494,8 @@ func (e SharedConfigProfileNotExistsError) Error() string {
 // profile contains assume role information, but that information is invalid
 // or not complete.
 type SharedConfigAssumeRoleError struct {
-	RoleARN string
+	RoleARN       string
+	SourceProfile string
 }
 
 // Code is the short id of the error.
@@ -280,8 +505,10 @@ func (e SharedConfigAssumeRoleError) Code() string {
 
 // 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",
+	return fmt.Sprintf(
-		e.RoleARN)
+		"failed to load assume role for %s, source profile %s has no shared credentials",
+		e.RoleARN, e.SourceProfile,
+	)
 }
 
 // OrigErr is the underlying error that caused the failure.
@@ -293,3 +520,36 @@ func (e SharedConfigAssumeRoleError) OrigErr() error {
 func (e SharedConfigAssumeRoleError) Error() string {
 	return awserr.SprintError(e.Code(), e.Message(), "", nil)
 }
+
+// CredentialRequiresARNError provides the error for shared config credentials
+// that are incorrectly configured in the shared config or credentials file.
+type CredentialRequiresARNError struct {
+	// type of credentials that were configured.
+	Type string
+
+	// Profile name the credentials were in.
+	Profile string
+}
+
+// Code is the short id of the error.
+func (e CredentialRequiresARNError) Code() string {
+	return "CredentialRequiresARNError"
+}
+
+// Message is the description of the error
+func (e CredentialRequiresARNError) Message() string {
+	return fmt.Sprintf(
+		"credential type %s requires role_arn, profile %s",
+		e.Type, e.Profile,
+	)
+}
+
+// OrigErr is the underlying error that caused the failure.
+func (e CredentialRequiresARNError) OrigErr() error {
+	return nil
+}
+
+// Error satisfies the error interface.
+func (e CredentialRequiresARNError) Error() string {
+	return awserr.SprintError(e.Code(), e.Message(), "", nil)
+}

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

@@ -1,8 +1,7 @@
 package v4
 
 import (
-	"net/http"
+	"github.com/aws/aws-sdk-go/internal/strings"
-	"strings"
 )
 
 // validator houses a set of rule needed for validation of a
@@ -61,7 +60,7 @@ type patterns []string
 // been found
 func (p patterns) IsValid(value string) bool {
 	for _, pattern := range p {
-		if strings.HasPrefix(http.CanonicalHeaderKey(value), pattern) {
+		if strings.HasPrefixFold(value, pattern) {
 			return true
 		}
 	}

vendor/github.com/aws/aws-sdk-go/aws/signer/v4/request_context_go1.5.go

@@ -0,0 +1,13 @@
+// +build !go1.7
+
+package v4
+
+import (
+	"net/http"
+
+	"github.com/aws/aws-sdk-go/aws"
+)
+
+func requestContext(r *http.Request) aws.Context {
+	return aws.BackgroundContext()
+}

vendor/github.com/aws/aws-sdk-go/aws/signer/v4/request_context_go1.7.go

@@ -0,0 +1,13 @@
+// +build go1.7
+
+package v4
+
+import (
+	"net/http"
+
+	"github.com/aws/aws-sdk-go/aws"
+)
+
+func requestContext(r *http.Request) aws.Context {
+	return r.Context()
+}

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

@@ -0,0 +1,63 @@
+package v4
+
+import (
+	"encoding/hex"
+	"strings"
+	"time"
+
+	"github.com/aws/aws-sdk-go/aws/credentials"
+)
+
+type credentialValueProvider interface {
+	Get() (credentials.Value, error)
+}
+
+// StreamSigner implements signing of event stream encoded payloads
+type StreamSigner struct {
+	region  string
+	service string
+
+	credentials credentialValueProvider
+
+	prevSig []byte
+}
+
+// NewStreamSigner creates a SigV4 signer used to sign Event Stream encoded messages
+func NewStreamSigner(region, service string, seedSignature []byte, credentials *credentials.Credentials) *StreamSigner {
+	return &StreamSigner{
+		region:      region,
+		service:     service,
+		credentials: credentials,
+		prevSig:     seedSignature,
+	}
+}
+
+// GetSignature takes an event stream encoded headers and payload and returns a signature
+func (s *StreamSigner) GetSignature(headers, payload []byte, date time.Time) ([]byte, error) {
+	credValue, err := s.credentials.Get()
+	if err != nil {
+		return nil, err
+	}
+
+	sigKey := deriveSigningKey(s.region, s.service, credValue.SecretAccessKey, date)
+
+	keyPath := buildSigningScope(s.region, s.service, date)
+
+	stringToSign := buildEventStreamStringToSign(headers, payload, s.prevSig, keyPath, date)
+
+	signature := hmacSHA256(sigKey, []byte(stringToSign))
+	s.prevSig = signature
+
+	return signature, nil
+}
+
+func buildEventStreamStringToSign(headers, payload, prevSig []byte, scope string, date time.Time) string {
+	return strings.Join([]string{
+		"AWS4-HMAC-SHA256-PAYLOAD",
+		formatTime(date),
+		scope,
+		hex.EncodeToString(prevSig),
+		hex.EncodeToString(hashSHA256(headers)),
+		hex.EncodeToString(hashSHA256(payload)),
+	}, "\n")
+}

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

@@ -76,9 +76,14 @@ import (
 )
 
 const (
+	authorizationHeader     = "Authorization"
+	authHeaderSignatureElem = "Signature="
+	signatureQueryKey       = "X-Amz-Signature"
+
 	authHeaderPrefix = "AWS4-HMAC-SHA256"
 	timeFormat       = "20060102T150405Z"
 	shortTimeFormat  = "20060102"
+	awsV4Request     = "aws4_request"
 
 	// emptyStringSHA256 is a SHA256 of an empty string
 	emptyStringSHA256 = `e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855`
@@ -87,9 +92,9 @@ const (
 var ignoredHeaders = rules{
 	blacklist{
 		mapRule{
-			"Authorization":   struct{}{},
+			authorizationHeader: struct{}{},
-			"User-Agent":      struct{}{},
+			"User-Agent":        struct{}{},
-			"X-Amzn-Trace-Id": struct{}{},
+			"X-Amzn-Trace-Id":   struct{}{},
 		},
 	},
 }
@@ -134,6 +139,7 @@ var requiredSignedHeaders = rules{
 			"X-Amz-Server-Side-Encryption-Customer-Key":                   struct{}{},
 			"X-Amz-Server-Side-Encryption-Customer-Key-Md5":               struct{}{},
 			"X-Amz-Storage-Class":                                         struct{}{},
+			"X-Amz-Tagging":                                               struct{}{},
 			"X-Amz-Website-Redirect-Location":                             struct{}{},
 			"X-Amz-Content-Sha256":                                        struct{}{},
 		},
@@ -181,7 +187,7 @@ type Signer struct {
 	// 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
+	// Disables 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.
@@ -228,11 +234,9 @@ type signingCtx struct {
 
 	DisableURIPathEscaping bool
 
-	credValues         credentials.Value
+	credValues      credentials.Value
-	isPresign          bool
+	isPresign       bool
-	formattedTime      string
+	unsignedPayload bool
-	formattedShortTime string
-	unsignedPayload    bool
 
 	bodyDigest       string
 	signedHeaders    string
@@ -336,7 +340,7 @@ func (v4 Signer) signWithBody(r *http.Request, body io.ReadSeeker, service, regi
 	}
 
 	var err error
-	ctx.credValues, err = v4.Credentials.Get()
+	ctx.credValues, err = v4.Credentials.GetWithContext(requestContext(r))
 	if err != nil {
 		return http.Header{}, err
 	}
@@ -421,7 +425,7 @@ var SignRequestHandler = request.NamedHandler{
 // If the credentials of the request's config are set to
 // credentials.AnonymousCredentials the request will not be signed.
 func SignSDKRequest(req *request.Request) {
-	signSDKRequestWithCurrTime(req, time.Now)
+	SignSDKRequestWithCurrentTime(req, time.Now)
 }
 
 // BuildNamedHandler will build a generic handler for signing.
@@ -429,12 +433,15 @@ func BuildNamedHandler(name string, opts ...func(*Signer)) request.NamedHandler
 	return request.NamedHandler{
 		Name: name,
 		Fn: func(req *request.Request) {
-			signSDKRequestWithCurrTime(req, time.Now, opts...)
+			SignSDKRequestWithCurrentTime(req, time.Now, opts...)
 		},
 	}
 }
 
-func signSDKRequestWithCurrTime(req *request.Request, curTimeFn func() time.Time, opts ...func(*Signer)) {
+// SignSDKRequestWithCurrentTime will sign the SDK's request using the time
+// function passed in. Behaves the same as SignSDKRequest with the exception
+// the request is signed with the value returned by the current time function.
+func SignSDKRequestWithCurrentTime(req *request.Request, curTimeFn func() time.Time, opts ...func(*Signer)) {
 	// If the request does not need to be signed ignore the signing of the
 	// request if the AnonymousCredentials object is used.
 	if req.Config.Credentials == credentials.AnonymousCredentials {
@@ -470,13 +477,9 @@ func signSDKRequestWithCurrTime(req *request.Request, curTimeFn func() time.Time
 		opt(v4)
 	}
 
-	signingTime := req.Time
+	curTime := curTimeFn()
-	if !req.LastSignedAt.IsZero() {
-		signingTime = req.LastSignedAt
-	}
-
 	signedHeaders, err := v4.signWithBody(req.HTTPRequest, req.GetBody(),
-		name, region, req.ExpireTime, req.ExpireTime > 0, signingTime,
+		name, region, req.ExpireTime, req.ExpireTime > 0, curTime,
 	)
 	if err != nil {
 		req.Error = err
@@ -485,7 +488,7 @@ func signSDKRequestWithCurrTime(req *request.Request, curTimeFn func() time.Time
 	}
 
 	req.SignedHeaderVals = signedHeaders
-	req.LastSignedAt = curTimeFn()
+	req.LastSignedAt = curTime
 }
 
 const logSignInfoMsg = `DEBUG: Request Signature:
@@ -532,39 +535,56 @@ func (ctx *signingCtx) build(disableHeaderHoisting bool) error {
 	ctx.buildSignature()       // depends on string to sign
 
 	if ctx.isPresign {
-		ctx.Request.URL.RawQuery += "&X-Amz-Signature=" + ctx.signature
+		ctx.Request.URL.RawQuery += "&" + signatureQueryKey + "=" + ctx.signature
 	} else {
 		parts := []string{
 			authHeaderPrefix + " Credential=" + ctx.credValues.AccessKeyID + "/" + ctx.credentialString,
 			"SignedHeaders=" + ctx.signedHeaders,
-			"Signature=" + ctx.signature,
+			authHeaderSignatureElem + ctx.signature,
 		}
-		ctx.Request.Header.Set("Authorization", strings.Join(parts, ", "))
+		ctx.Request.Header.Set(authorizationHeader, strings.Join(parts, ", "))
 	}
 
 	return nil
 }
 
-func (ctx *signingCtx) buildTime() {
+// GetSignedRequestSignature attempts to extract the signature of the request.
-	ctx.formattedTime = ctx.Time.UTC().Format(timeFormat)
+// Returning an error if the request is unsigned, or unable to extract the
-	ctx.formattedShortTime = ctx.Time.UTC().Format(shortTimeFormat)
+// signature.
+func GetSignedRequestSignature(r *http.Request) ([]byte, error) {
 
+	if auth := r.Header.Get(authorizationHeader); len(auth) != 0 {
+		ps := strings.Split(auth, ", ")
+		for _, p := range ps {
+			if idx := strings.Index(p, authHeaderSignatureElem); idx >= 0 {
+				sig := p[len(authHeaderSignatureElem):]
+				if len(sig) == 0 {
+					return nil, fmt.Errorf("invalid request signature authorization header")
+				}
+				return hex.DecodeString(sig)
+			}
+		}
+	}
+
+	if sig := r.URL.Query().Get("X-Amz-Signature"); len(sig) != 0 {
+		return hex.DecodeString(sig)
+	}
+
+	return nil, fmt.Errorf("request not signed")
+}
+
+func (ctx *signingCtx) buildTime() {
 	if ctx.isPresign {
 		duration := int64(ctx.ExpireTime / time.Second)
-		ctx.Query.Set("X-Amz-Date", ctx.formattedTime)
+		ctx.Query.Set("X-Amz-Date", formatTime(ctx.Time))
 		ctx.Query.Set("X-Amz-Expires", strconv.FormatInt(duration, 10))
 	} else {
-		ctx.Request.Header.Set("X-Amz-Date", ctx.formattedTime)
+		ctx.Request.Header.Set("X-Amz-Date", formatTime(ctx.Time))
 	}
 }
 
 func (ctx *signingCtx) buildCredentialString() {
-	ctx.credentialString = strings.Join([]string{
+	ctx.credentialString = buildSigningScope(ctx.Region, ctx.ServiceName, ctx.Time)
-		ctx.formattedShortTime,
-		ctx.Region,
-		ctx.ServiceName,
-		"aws4_request",
-	}, "/")
 
 	if ctx.isPresign {
 		ctx.Query.Set("X-Amz-Credential", ctx.credValues.AccessKeyID+"/"+ctx.credentialString)
@@ -588,8 +608,7 @@ func (ctx *signingCtx) buildCanonicalHeaders(r rule, header http.Header) {
 	var headers []string
 	headers = append(headers, "host")
 	for k, v := range header {
-		canonicalKey := http.CanonicalHeaderKey(k)
+		if !r.IsValid(k) {
-		if !r.IsValid(canonicalKey) {
 			continue // ignored header
 		}
 		if ctx.SignedHeaderVals == nil {
@@ -653,19 +672,15 @@ func (ctx *signingCtx) buildCanonicalString() {
 func (ctx *signingCtx) buildStringToSign() {
 	ctx.stringToSign = strings.Join([]string{
 		authHeaderPrefix,
-		ctx.formattedTime,
+		formatTime(ctx.Time),
 		ctx.credentialString,
-		hex.EncodeToString(makeSha256([]byte(ctx.canonicalString))),
+		hex.EncodeToString(hashSHA256([]byte(ctx.canonicalString))),
 	}, "\n")
 }
 
 func (ctx *signingCtx) buildSignature() {
-	secret := ctx.credValues.SecretAccessKey
+	creds := deriveSigningKey(ctx.Region, ctx.ServiceName, ctx.credValues.SecretAccessKey, ctx.Time)
-	date := makeHmac([]byte("AWS4"+secret), []byte(ctx.formattedShortTime))
+	signature := hmacSHA256(creds, []byte(ctx.stringToSign))
-	region := makeHmac(date, []byte(ctx.Region))
-	service := makeHmac(region, []byte(ctx.ServiceName))
-	credentials := makeHmac(service, []byte("aws4_request"))
-	signature := makeHmac(credentials, []byte(ctx.stringToSign))
 	ctx.signature = hex.EncodeToString(signature)
 }
 
@@ -687,7 +702,11 @@ func (ctx *signingCtx) buildBodyDigest() error {
 			if !aws.IsReaderSeekable(ctx.Body) {
 				return fmt.Errorf("cannot use unseekable request body %T, for signed request with body", ctx.Body)
 			}
-			hash = hex.EncodeToString(makeSha256Reader(ctx.Body))
+			hashBytes, err := makeSha256Reader(ctx.Body)
+			if err != nil {
+				return err
+			}
+			hash = hex.EncodeToString(hashBytes)
 		}
 
 		if includeSHA256Header {
@@ -722,31 +741,45 @@ func (ctx *signingCtx) removePresign() {
 	ctx.Query.Del("X-Amz-SignedHeaders")
 }
 
-func makeHmac(key []byte, data []byte) []byte {
+func hmacSHA256(key []byte, data []byte) []byte {
 	hash := hmac.New(sha256.New, key)
 	hash.Write(data)
 	return hash.Sum(nil)
 }
 
-func makeSha256(data []byte) []byte {
+func hashSHA256(data []byte) []byte {
 	hash := sha256.New()
 	hash.Write(data)
 	return hash.Sum(nil)
 }
 
-func makeSha256Reader(reader io.ReadSeeker) []byte {
+func makeSha256Reader(reader io.ReadSeeker) (hashBytes []byte, err error) {
 	hash := sha256.New()
-	start, _ := reader.Seek(0, sdkio.SeekCurrent)
+	start, err := reader.Seek(0, sdkio.SeekCurrent)
-	defer reader.Seek(start, sdkio.SeekStart)
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		// ensure error is return if unable to seek back to start of payload.
+		_, err = reader.Seek(start, sdkio.SeekStart)
+	}()
 
-	io.Copy(hash, reader)
+	// Use CopyN to avoid allocating the 32KB buffer in io.Copy for bodies
-	return hash.Sum(nil)
+	// smaller than 32KB. Fall back to io.Copy if we fail to determine the size.
+	size, err := aws.SeekerLen(reader)
+	if err != nil {
+		io.Copy(hash, reader)
+	} else {
+		io.CopyN(hash, reader, size)
+	}
+
+	return hash.Sum(nil), nil
 }
 
 const doubleSpace = "  "
 
 // stripExcessSpaces will rewrite the passed in slice's string values to not
-// contain muliple side-by-side spaces.
+// contain multiple side-by-side spaces.
 func stripExcessSpaces(vals []string) {
 	var j, k, l, m, spaces int
 	for i, str := range vals {
@@ -786,3 +819,28 @@ func stripExcessSpaces(vals []string) {
 		vals[i] = string(buf[:m])
 	}
 }
+
+func buildSigningScope(region, service string, dt time.Time) string {
+	return strings.Join([]string{
+		formatShortTime(dt),
+		region,
+		service,
+		awsV4Request,
+	}, "/")
+}
+
+func deriveSigningKey(region, service, secretKey string, dt time.Time) []byte {
+	kDate := hmacSHA256([]byte("AWS4"+secretKey), []byte(formatShortTime(dt)))
+	kRegion := hmacSHA256(kDate, []byte(region))
+	kService := hmacSHA256(kRegion, []byte(service))
+	signingKey := hmacSHA256(kService, []byte(awsV4Request))
+	return signingKey
+}
+
+func formatShortTime(dt time.Time) string {
+	return dt.UTC().Format(shortTimeFormat)
+}
+
+func formatTime(dt time.Time) string {
+	return dt.UTC().Format(timeFormat)
+}

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

@@ -2,18 +2,24 @@ package aws
 
 import (
 	"io"
+	"strings"
 	"sync"
 
 	"github.com/aws/aws-sdk-go/internal/sdkio"
 )
 
-// ReadSeekCloser wraps a io.Reader returning a ReaderSeekerCloser. Should
+// ReadSeekCloser wraps a io.Reader returning a ReaderSeekerCloser. Allows the
-// only be used with an io.Reader that is also an io.Seeker. Doing so may
+// SDK to accept an io.Reader that is not also an io.Seeker for unsigned
-// cause request signature errors, or request body's not sent for GET, HEAD
+// streaming payload API operations.
-// and DELETE HTTP methods.
 //
-// Deprecated: Should only be used with io.ReadSeeker. If using for
+// A ReadSeekCloser wrapping an nonseekable io.Reader used in an API
-// S3 PutObject to stream content use s3manager.Uploader instead.
+// operation's input will prevent that operation being retried in the case of
+// network errors, and cause operation requests to fail if the operation
+// requires payload signing.
+//
+// Note: If using With S3 PutObject to stream an object upload The SDK's S3
+// Upload manager (s3manager.Uploader) provides support for streaming with the
+// ability to retry network errors.
 func ReadSeekCloser(r io.Reader) ReaderSeekerCloser {
 	return ReaderSeekerCloser{r}
 }
@@ -43,7 +49,8 @@ func IsReaderSeekable(r io.Reader) bool {
 // Read reads from the reader up to size of p. The number of bytes read, and
 // error if it occurred will be returned.
 //
-// If the reader is not an io.Reader zero bytes read, and nil error will be returned.
+// If the reader is not an io.Reader zero bytes read, and nil error will be
+// returned.
 //
 // Performs the same functionality as io.Reader Read
 func (r ReaderSeekerCloser) Read(p []byte) (int, error) {
@@ -199,3 +206,59 @@ func (b *WriteAtBuffer) Bytes() []byte {
 	defer b.m.Unlock()
 	return b.buf
 }
+
+// MultiCloser is a utility to close multiple io.Closers within a single
+// statement.
+type MultiCloser []io.Closer
+
+// Close closes all of the io.Closers making up the MultiClosers. Any
+// errors that occur while closing will be returned in the order they
+// occur.
+func (m MultiCloser) Close() error {
+	var errs errors
+	for _, c := range m {
+		err := c.Close()
+		if err != nil {
+			errs = append(errs, err)
+		}
+	}
+	if len(errs) != 0 {
+		return errs
+	}
+
+	return nil
+}
+
+type errors []error
+
+func (es errors) Error() string {
+	var parts []string
+	for _, e := range es {
+		parts = append(parts, e.Error())
+	}
+
+	return strings.Join(parts, "\n")
+}
+
+// CopySeekableBody copies the seekable body to an io.Writer
+func CopySeekableBody(dst io.Writer, src io.ReadSeeker) (int64, error) {
+	curPos, err := src.Seek(0, sdkio.SeekCurrent)
+	if err != nil {
+		return 0, err
+	}
+
+	// copy errors may be assumed to be from the body.
+	n, err := io.Copy(dst, src)
+	if err != nil {
+		return n, err
+	}
+
+	// seek back to the first position after reading to reset
+	// the body for transmission.
+	_, err = src.Seek(curPos, sdkio.SeekStart)
+	if err != nil {
+		return n, err
+	}
+
+	return n, nil
+}

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 = "1.15.11"
+const SDKVersion = "1.34.9"

vendor/github.com/aws/aws-sdk-go/internal/context/background_go1.5.go

@@ -1,6 +1,6 @@
 // +build !go1.7
 
-package aws
+package context
 
 import "time"
 
@@ -30,12 +30,11 @@ func (*emptyCtx) Value(key interface{}) interface{} {
 
 func (e *emptyCtx) String() string {
 	switch e {
-	case backgroundCtx:
+	case BackgroundCtx:
 		return "aws.BackgroundContext"
 	}
 	return "unknown empty Context"
 }
 
-var (
+// BackgroundCtx is the common base context.
-	backgroundCtx = new(emptyCtx)
+var BackgroundCtx = new(emptyCtx)
-)

vendor/github.com/aws/aws-sdk-go/internal/ini/ast.go

@@ -0,0 +1,120 @@
+package ini
+
+// ASTKind represents different states in the parse table
+// and the type of AST that is being constructed
+type ASTKind int
+
+// ASTKind* is used in the parse table to transition between
+// the different states
+const (
+	ASTKindNone = ASTKind(iota)
+	ASTKindStart
+	ASTKindExpr
+	ASTKindEqualExpr
+	ASTKindStatement
+	ASTKindSkipStatement
+	ASTKindExprStatement
+	ASTKindSectionStatement
+	ASTKindNestedSectionStatement
+	ASTKindCompletedNestedSectionStatement
+	ASTKindCommentStatement
+	ASTKindCompletedSectionStatement
+)
+
+func (k ASTKind) String() string {
+	switch k {
+	case ASTKindNone:
+		return "none"
+	case ASTKindStart:
+		return "start"
+	case ASTKindExpr:
+		return "expr"
+	case ASTKindStatement:
+		return "stmt"
+	case ASTKindSectionStatement:
+		return "section_stmt"
+	case ASTKindExprStatement:
+		return "expr_stmt"
+	case ASTKindCommentStatement:
+		return "comment"
+	case ASTKindNestedSectionStatement:
+		return "nested_section_stmt"
+	case ASTKindCompletedSectionStatement:
+		return "completed_stmt"
+	case ASTKindSkipStatement:
+		return "skip"
+	default:
+		return ""
+	}
+}
+
+// AST interface allows us to determine what kind of node we
+// are on and casting may not need to be necessary.
+//
+// The root is always the first node in Children
+type AST struct {
+	Kind      ASTKind
+	Root      Token
+	RootToken bool
+	Children  []AST
+}
+
+func newAST(kind ASTKind, root AST, children ...AST) AST {
+	return AST{
+		Kind:     kind,
+		Children: append([]AST{root}, children...),
+	}
+}
+
+func newASTWithRootToken(kind ASTKind, root Token, children ...AST) AST {
+	return AST{
+		Kind:      kind,
+		Root:      root,
+		RootToken: true,
+		Children:  children,
+	}
+}
+
+// AppendChild will append to the list of children an AST has.
+func (a *AST) AppendChild(child AST) {
+	a.Children = append(a.Children, child)
+}
+
+// GetRoot will return the root AST which can be the first entry
+// in the children list or a token.
+func (a *AST) GetRoot() AST {
+	if a.RootToken {
+		return *a
+	}
+
+	if len(a.Children) == 0 {
+		return AST{}
+	}
+
+	return a.Children[0]
+}
+
+// GetChildren will return the current AST's list of children
+func (a *AST) GetChildren() []AST {
+	if len(a.Children) == 0 {
+		return []AST{}
+	}
+
+	if a.RootToken {
+		return a.Children
+	}
+
+	return a.Children[1:]
+}
+
+// SetChildren will set and override all children of the AST.
+func (a *AST) SetChildren(children []AST) {
+	if a.RootToken {
+		a.Children = children
+	} else {
+		a.Children = append(a.Children[:1], children...)
+	}
+}
+
+// Start is used to indicate the starting state of the parse table.
+var Start = newAST(ASTKindStart, AST{})

vendor/github.com/aws/aws-sdk-go/internal/ini/comma_token.go

@@ -0,0 +1,11 @@
+package ini
+
+var commaRunes = []rune(",")
+
+func isComma(b rune) bool {
+	return b == ','
+}
+
+func newCommaToken() Token {
+	return newToken(TokenComma, commaRunes, NoneType)
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/comment_token.go

@@ -0,0 +1,35 @@
+package ini
+
+// isComment will return whether or not the next byte(s) is a
+// comment.
+func isComment(b []rune) bool {
+	if len(b) == 0 {
+		return false
+	}
+
+	switch b[0] {
+	case ';':
+		return true
+	case '#':
+		return true
+	}
+
+	return false
+}
+
+// newCommentToken will create a comment token and
+// return how many bytes were read.
+func newCommentToken(b []rune) (Token, int, error) {
+	i := 0
+	for ; i < len(b); i++ {
+		if b[i] == '\n' {
+			break
+		}
+
+		if len(b)-i > 2 && b[i] == '\r' && b[i+1] == '\n' {
+			break
+		}
+	}
+
+	return newToken(TokenComment, b[:i], NoneType), i, nil
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/doc.go

@@ -0,0 +1,29 @@
+// Package ini is an LL(1) parser for configuration files.
+//
+//	Example:
+//	sections, err := ini.OpenFile("/path/to/file")
+//	if err != nil {
+//		panic(err)
+//	}
+//
+//	profile := "foo"
+//	section, ok := sections.GetSection(profile)
+//	if !ok {
+//		fmt.Printf("section %q could not be found", profile)
+//	}
+//
+// Below is the BNF that describes this parser
+//	Grammar:
+//	stmt -> value stmt'
+//	stmt' -> epsilon | op stmt
+//	value -> number | string | boolean | quoted_string
+//
+//	section -> [ section'
+//	section' -> value section_close
+//	section_close -> ]
+//
+//	SkipState will skip (NL WS)+
+//
+//	comment -> # comment' | ; comment'
+//	comment' -> epsilon | value
+package ini

vendor/github.com/aws/aws-sdk-go/internal/ini/empty_token.go

@@ -0,0 +1,4 @@
+package ini
+
+// emptyToken is used to satisfy the Token interface
+var emptyToken = newToken(TokenNone, []rune{}, NoneType)

vendor/github.com/aws/aws-sdk-go/internal/ini/expression.go

@@ -0,0 +1,24 @@
+package ini
+
+// newExpression will return an expression AST.
+// Expr represents an expression
+//
+//	grammar:
+//	expr -> string | number
+func newExpression(tok Token) AST {
+	return newASTWithRootToken(ASTKindExpr, tok)
+}
+
+func newEqualExpr(left AST, tok Token) AST {
+	return newASTWithRootToken(ASTKindEqualExpr, tok, left)
+}
+
+// EqualExprKey will return a LHS value in the equal expr
+func EqualExprKey(ast AST) string {
+	children := ast.GetChildren()
+	if len(children) == 0 || ast.Kind != ASTKindEqualExpr {
+		return ""
+	}
+
+	return string(children[0].Root.Raw())
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/fuzz.go

@@ -0,0 +1,17 @@
+// +build gofuzz
+
+package ini
+
+import (
+	"bytes"
+)
+
+func Fuzz(data []byte) int {
+	b := bytes.NewReader(data)
+
+	if _, err := Parse(b); err != nil {
+		return 0
+	}
+
+	return 1
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/ini.go

@@ -0,0 +1,51 @@
+package ini
+
+import (
+	"io"
+	"os"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+)
+
+// OpenFile takes a path to a given file, and will open  and parse
+// that file.
+func OpenFile(path string) (Sections, error) {
+	f, err := os.Open(path)
+	if err != nil {
+		return Sections{}, awserr.New(ErrCodeUnableToReadFile, "unable to open file", err)
+	}
+	defer f.Close()
+
+	return Parse(f)
+}
+
+// Parse will parse the given file using the shared config
+// visitor.
+func Parse(f io.Reader) (Sections, error) {
+	tree, err := ParseAST(f)
+	if err != nil {
+		return Sections{}, err
+	}
+
+	v := NewDefaultVisitor()
+	if err = Walk(tree, v); err != nil {
+		return Sections{}, err
+	}
+
+	return v.Sections, nil
+}
+
+// ParseBytes will parse the given bytes and return the parsed sections.
+func ParseBytes(b []byte) (Sections, error) {
+	tree, err := ParseASTBytes(b)
+	if err != nil {
+		return Sections{}, err
+	}
+
+	v := NewDefaultVisitor()
+	if err = Walk(tree, v); err != nil {
+		return Sections{}, err
+	}
+
+	return v.Sections, nil
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/ini_lexer.go

@@ -0,0 +1,165 @@
+package ini
+
+import (
+	"bytes"
+	"io"
+	"io/ioutil"
+
+	"github.com/aws/aws-sdk-go/aws/awserr"
+)
+
+const (
+	// ErrCodeUnableToReadFile is used when a file is failed to be
+	// opened or read from.
+	ErrCodeUnableToReadFile = "FailedRead"
+)
+
+// TokenType represents the various different tokens types
+type TokenType int
+
+func (t TokenType) String() string {
+	switch t {
+	case TokenNone:
+		return "none"
+	case TokenLit:
+		return "literal"
+	case TokenSep:
+		return "sep"
+	case TokenOp:
+		return "op"
+	case TokenWS:
+		return "ws"
+	case TokenNL:
+		return "newline"
+	case TokenComment:
+		return "comment"
+	case TokenComma:
+		return "comma"
+	default:
+		return ""
+	}
+}
+
+// TokenType enums
+const (
+	TokenNone = TokenType(iota)
+	TokenLit
+	TokenSep
+	TokenComma
+	TokenOp
+	TokenWS
+	TokenNL
+	TokenComment
+)
+
+type iniLexer struct{}
+
+// Tokenize will return a list of tokens during lexical analysis of the
+// io.Reader.
+func (l *iniLexer) Tokenize(r io.Reader) ([]Token, error) {
+	b, err := ioutil.ReadAll(r)
+	if err != nil {
+		return nil, awserr.New(ErrCodeUnableToReadFile, "unable to read file", err)
+	}
+
+	return l.tokenize(b)
+}
+
+func (l *iniLexer) tokenize(b []byte) ([]Token, error) {
+	runes := bytes.Runes(b)
+	var err error
+	n := 0
+	tokenAmount := countTokens(runes)
+	tokens := make([]Token, tokenAmount)
+	count := 0
+
+	for len(runes) > 0 && count < tokenAmount {
+		switch {
+		case isWhitespace(runes[0]):
+			tokens[count], n, err = newWSToken(runes)
+		case isComma(runes[0]):
+			tokens[count], n = newCommaToken(), 1
+		case isComment(runes):
+			tokens[count], n, err = newCommentToken(runes)
+		case isNewline(runes):
+			tokens[count], n, err = newNewlineToken(runes)
+		case isSep(runes):
+			tokens[count], n, err = newSepToken(runes)
+		case isOp(runes):
+			tokens[count], n, err = newOpToken(runes)
+		default:
+			tokens[count], n, err = newLitToken(runes)
+		}
+
+		if err != nil {
+			return nil, err
+		}
+
+		count++
+
+		runes = runes[n:]
+	}
+
+	return tokens[:count], nil
+}
+
+func countTokens(runes []rune) int {
+	count, n := 0, 0
+	var err error
+
+	for len(runes) > 0 {
+		switch {
+		case isWhitespace(runes[0]):
+			_, n, err = newWSToken(runes)
+		case isComma(runes[0]):
+			_, n = newCommaToken(), 1
+		case isComment(runes):
+			_, n, err = newCommentToken(runes)
+		case isNewline(runes):
+			_, n, err = newNewlineToken(runes)
+		case isSep(runes):
+			_, n, err = newSepToken(runes)
+		case isOp(runes):
+			_, n, err = newOpToken(runes)
+		default:
+			_, n, err = newLitToken(runes)
+		}
+
+		if err != nil {
+			return 0
+		}
+
+		count++
+		runes = runes[n:]
+	}
+
+	return count + 1
+}
+
+// Token indicates a metadata about a given value.
+type Token struct {
+	t         TokenType
+	ValueType ValueType
+	base      int
+	raw       []rune
+}
+
+var emptyValue = Value{}
+
+func newToken(t TokenType, raw []rune, v ValueType) Token {
+	return Token{
+		t:         t,
+		raw:       raw,
+		ValueType: v,
+	}
+}
+
+// Raw return the raw runes that were consumed
+func (tok Token) Raw() []rune {
+	return tok.raw
+}
+
+// Type returns the token type
+func (tok Token) Type() TokenType {
+	return tok.t
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/ini_parser.go

@@ -0,0 +1,356 @@
+package ini
+
+import (
+	"fmt"
+	"io"
+)
+
+// State enums for the parse table
+const (
+	InvalidState = iota
+	// stmt -> value stmt'
+	StatementState
+	// stmt' -> MarkComplete | op stmt
+	StatementPrimeState
+	// value -> number | string | boolean | quoted_string
+	ValueState
+	// section -> [ section'
+	OpenScopeState
+	// section' -> value section_close
+	SectionState
+	// section_close -> ]
+	CloseScopeState
+	// SkipState will skip (NL WS)+
+	SkipState
+	// SkipTokenState will skip any token and push the previous
+	// state onto the stack.
+	SkipTokenState
+	// comment -> # comment' | ; comment'
+	// comment' -> MarkComplete | value
+	CommentState
+	// MarkComplete state will complete statements and move that
+	// to the completed AST list
+	MarkCompleteState
+	// TerminalState signifies that the tokens have been fully parsed
+	TerminalState
+)
+
+// parseTable is a state machine to dictate the grammar above.
+var parseTable = map[ASTKind]map[TokenType]int{
+	ASTKindStart: map[TokenType]int{
+		TokenLit:     StatementState,
+		TokenSep:     OpenScopeState,
+		TokenWS:      SkipTokenState,
+		TokenNL:      SkipTokenState,
+		TokenComment: CommentState,
+		TokenNone:    TerminalState,
+	},
+	ASTKindCommentStatement: map[TokenType]int{
+		TokenLit:     StatementState,
+		TokenSep:     OpenScopeState,
+		TokenWS:      SkipTokenState,
+		TokenNL:      SkipTokenState,
+		TokenComment: CommentState,
+		TokenNone:    MarkCompleteState,
+	},
+	ASTKindExpr: map[TokenType]int{
+		TokenOp:      StatementPrimeState,
+		TokenLit:     ValueState,
+		TokenSep:     OpenScopeState,
+		TokenWS:      ValueState,
+		TokenNL:      SkipState,
+		TokenComment: CommentState,
+		TokenNone:    MarkCompleteState,
+	},
+	ASTKindEqualExpr: map[TokenType]int{
+		TokenLit: ValueState,
+		TokenWS:  SkipTokenState,
+		TokenNL:  SkipState,
+	},
+	ASTKindStatement: map[TokenType]int{
+		TokenLit:     SectionState,
+		TokenSep:     CloseScopeState,
+		TokenWS:      SkipTokenState,
+		TokenNL:      SkipTokenState,
+		TokenComment: CommentState,
+		TokenNone:    MarkCompleteState,
+	},
+	ASTKindExprStatement: map[TokenType]int{
+		TokenLit:     ValueState,
+		TokenSep:     OpenScopeState,
+		TokenOp:      ValueState,
+		TokenWS:      ValueState,
+		TokenNL:      MarkCompleteState,
+		TokenComment: CommentState,
+		TokenNone:    TerminalState,
+		TokenComma:   SkipState,
+	},
+	ASTKindSectionStatement: map[TokenType]int{
+		TokenLit: SectionState,
+		TokenOp:  SectionState,
+		TokenSep: CloseScopeState,
+		TokenWS:  SectionState,
+		TokenNL:  SkipTokenState,
+	},
+	ASTKindCompletedSectionStatement: map[TokenType]int{
+		TokenWS:      SkipTokenState,
+		TokenNL:      SkipTokenState,
+		TokenLit:     StatementState,
+		TokenSep:     OpenScopeState,
+		TokenComment: CommentState,
+		TokenNone:    MarkCompleteState,
+	},
+	ASTKindSkipStatement: map[TokenType]int{
+		TokenLit:     StatementState,
+		TokenSep:     OpenScopeState,
+		TokenWS:      SkipTokenState,
+		TokenNL:      SkipTokenState,
+		TokenComment: CommentState,
+		TokenNone:    TerminalState,
+	},
+}
+
+// ParseAST will parse input from an io.Reader using
+// an LL(1) parser.
+func ParseAST(r io.Reader) ([]AST, error) {
+	lexer := iniLexer{}
+	tokens, err := lexer.Tokenize(r)
+	if err != nil {
+		return []AST{}, err
+	}
+
+	return parse(tokens)
+}
+
+// ParseASTBytes will parse input from a byte slice using
+// an LL(1) parser.
+func ParseASTBytes(b []byte) ([]AST, error) {
+	lexer := iniLexer{}
+	tokens, err := lexer.tokenize(b)
+	if err != nil {
+		return []AST{}, err
+	}
+
+	return parse(tokens)
+}
+
+func parse(tokens []Token) ([]AST, error) {
+	start := Start
+	stack := newParseStack(3, len(tokens))
+
+	stack.Push(start)
+	s := newSkipper()
+
+loop:
+	for stack.Len() > 0 {
+		k := stack.Pop()
+
+		var tok Token
+		if len(tokens) == 0 {
+			// this occurs when all the tokens have been processed
+			// but reduction of what's left on the stack needs to
+			// occur.
+			tok = emptyToken
+		} else {
+			tok = tokens[0]
+		}
+
+		step := parseTable[k.Kind][tok.Type()]
+		if s.ShouldSkip(tok) {
+			// being in a skip state with no tokens will break out of
+			// the parse loop since there is nothing left to process.
+			if len(tokens) == 0 {
+				break loop
+			}
+			// if should skip is true, we skip the tokens until should skip is set to false.
+			step = SkipTokenState
+		}
+
+		switch step {
+		case TerminalState:
+			// Finished parsing. Push what should be the last
+			// statement to the stack. If there is anything left
+			// on the stack, an error in parsing has occurred.
+			if k.Kind != ASTKindStart {
+				stack.MarkComplete(k)
+			}
+			break loop
+		case SkipTokenState:
+			// When skipping a token, the previous state was popped off the stack.
+			// To maintain the correct state, the previous state will be pushed
+			// onto the stack.
+			stack.Push(k)
+		case StatementState:
+			if k.Kind != ASTKindStart {
+				stack.MarkComplete(k)
+			}
+			expr := newExpression(tok)
+			stack.Push(expr)
+		case StatementPrimeState:
+			if tok.Type() != TokenOp {
+				stack.MarkComplete(k)
+				continue
+			}
+
+			if k.Kind != ASTKindExpr {
+				return nil, NewParseError(
+					fmt.Sprintf("invalid expression: expected Expr type, but found %T type", k),
+				)
+			}
+
+			k = trimSpaces(k)
+			expr := newEqualExpr(k, tok)
+			stack.Push(expr)
+		case ValueState:
+			// ValueState requires the previous state to either be an equal expression
+			// or an expression statement.
+			//
+			// This grammar occurs when the RHS is a number, word, or quoted string.
+			// equal_expr -> lit op equal_expr'
+			// equal_expr' -> number | string | quoted_string
+			// quoted_string -> " quoted_string'
+			// quoted_string' -> string quoted_string_end
+			// quoted_string_end -> "
+			//
+			// otherwise
+			// expr_stmt -> equal_expr (expr_stmt')*
+			// expr_stmt' -> ws S | op S | MarkComplete
+			// S -> equal_expr' expr_stmt'
+			switch k.Kind {
+			case ASTKindEqualExpr:
+				// assigning a value to some key
+				k.AppendChild(newExpression(tok))
+				stack.Push(newExprStatement(k))
+			case ASTKindExpr:
+				k.Root.raw = append(k.Root.raw, tok.Raw()...)
+				stack.Push(k)
+			case ASTKindExprStatement:
+				root := k.GetRoot()
+				children := root.GetChildren()
+				if len(children) == 0 {
+					return nil, NewParseError(
+						fmt.Sprintf("invalid expression: AST contains no children %s", k.Kind),
+					)
+				}
+
+				rhs := children[len(children)-1]
+
+				if rhs.Root.ValueType != QuotedStringType {
+					rhs.Root.ValueType = StringType
+					rhs.Root.raw = append(rhs.Root.raw, tok.Raw()...)
+
+				}
+
+				children[len(children)-1] = rhs
+				k.SetChildren(children)
+
+				stack.Push(k)
+			}
+		case OpenScopeState:
+			if !runeCompare(tok.Raw(), openBrace) {
+				return nil, NewParseError("expected '['")
+			}
+			// If OpenScopeState is not at the start, we must mark the previous ast as complete
+			//
+			// for example: if previous ast was a skip statement;
+			// we should mark it as complete before we create a new statement
+			if k.Kind != ASTKindStart {
+				stack.MarkComplete(k)
+			}
+
+			stmt := newStatement()
+			stack.Push(stmt)
+		case CloseScopeState:
+			if !runeCompare(tok.Raw(), closeBrace) {
+				return nil, NewParseError("expected ']'")
+			}
+
+			k = trimSpaces(k)
+			stack.Push(newCompletedSectionStatement(k))
+		case SectionState:
+			var stmt AST
+
+			switch k.Kind {
+			case ASTKindStatement:
+				// If there are multiple literals inside of a scope declaration,
+				// then the current token's raw value will be appended to the Name.
+				//
+				// This handles cases like [ profile default ]
+				//
+				// k will represent a SectionStatement with the children representing
+				// the label of the section
+				stmt = newSectionStatement(tok)
+			case ASTKindSectionStatement:
+				k.Root.raw = append(k.Root.raw, tok.Raw()...)
+				stmt = k
+			default:
+				return nil, NewParseError(
+					fmt.Sprintf("invalid statement: expected statement: %v", k.Kind),
+				)
+			}
+
+			stack.Push(stmt)
+		case MarkCompleteState:
+			if k.Kind != ASTKindStart {
+				stack.MarkComplete(k)
+			}
+
+			if stack.Len() == 0 {
+				stack.Push(start)
+			}
+		case SkipState:
+			stack.Push(newSkipStatement(k))
+			s.Skip()
+		case CommentState:
+			if k.Kind == ASTKindStart {
+				stack.Push(k)
+			} else {
+				stack.MarkComplete(k)
+			}
+
+			stmt := newCommentStatement(tok)
+			stack.Push(stmt)
+		default:
+			return nil, NewParseError(
+				fmt.Sprintf("invalid state with ASTKind %v and TokenType %v",
+					k, tok.Type()))
+		}
+
+		if len(tokens) > 0 {
+			tokens = tokens[1:]
+		}
+	}
+
+	// this occurs when a statement has not been completed
+	if stack.top > 1 {
+		return nil, NewParseError(fmt.Sprintf("incomplete ini expression"))
+	}
+
+	// returns a sublist which excludes the start symbol
+	return stack.List(), nil
+}
+
+// trimSpaces will trim spaces on the left and right hand side of
+// the literal.
+func trimSpaces(k AST) AST {
+	// trim left hand side of spaces
+	for i := 0; i < len(k.Root.raw); i++ {
+		if !isWhitespace(k.Root.raw[i]) {
+			break
+		}
+
+		k.Root.raw = k.Root.raw[1:]
+		i--
+	}
+
+	// trim right hand side of spaces
+	for i := len(k.Root.raw) - 1; i >= 0; i-- {
+		if !isWhitespace(k.Root.raw[i]) {
+			break
+		}
+
+		k.Root.raw = k.Root.raw[:len(k.Root.raw)-1]
+	}
+
+	return k
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/literal_tokens.go

@@ -0,0 +1,324 @@
+package ini
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+var (
+	runesTrue  = []rune("true")
+	runesFalse = []rune("false")
+)
+
+var literalValues = [][]rune{
+	runesTrue,
+	runesFalse,
+}
+
+func isBoolValue(b []rune) bool {
+	for _, lv := range literalValues {
+		if isLitValue(lv, b) {
+			return true
+		}
+	}
+	return false
+}
+
+func isLitValue(want, have []rune) bool {
+	if len(have) < len(want) {
+		return false
+	}
+
+	for i := 0; i < len(want); i++ {
+		if want[i] != have[i] {
+			return false
+		}
+	}
+
+	return true
+}
+
+// isNumberValue will return whether not the leading characters in
+// a byte slice is a number. A number is delimited by whitespace or
+// the newline token.
+//
+// A number is defined to be in a binary, octal, decimal (int | float), hex format,
+// or in scientific notation.
+func isNumberValue(b []rune) bool {
+	negativeIndex := 0
+	helper := numberHelper{}
+	needDigit := false
+
+	for i := 0; i < len(b); i++ {
+		negativeIndex++
+
+		switch b[i] {
+		case '-':
+			if helper.IsNegative() || negativeIndex != 1 {
+				return false
+			}
+			helper.Determine(b[i])
+			needDigit = true
+			continue
+		case 'e', 'E':
+			if err := helper.Determine(b[i]); err != nil {
+				return false
+			}
+			negativeIndex = 0
+			needDigit = true
+			continue
+		case 'b':
+			if helper.numberFormat == hex {
+				break
+			}
+			fallthrough
+		case 'o', 'x':
+			needDigit = true
+			if i == 0 {
+				return false
+			}
+
+			fallthrough
+		case '.':
+			if err := helper.Determine(b[i]); err != nil {
+				return false
+			}
+			needDigit = true
+			continue
+		}
+
+		if i > 0 && (isNewline(b[i:]) || isWhitespace(b[i])) {
+			return !needDigit
+		}
+
+		if !helper.CorrectByte(b[i]) {
+			return false
+		}
+		needDigit = false
+	}
+
+	return !needDigit
+}
+
+func isValid(b []rune) (bool, int, error) {
+	if len(b) == 0 {
+		// TODO: should probably return an error
+		return false, 0, nil
+	}
+
+	return isValidRune(b[0]), 1, nil
+}
+
+func isValidRune(r rune) bool {
+	return r != ':' && r != '=' && r != '[' && r != ']' && r != ' ' && r != '\n'
+}
+
+// ValueType is an enum that will signify what type
+// the Value is
+type ValueType int
+
+func (v ValueType) String() string {
+	switch v {
+	case NoneType:
+		return "NONE"
+	case DecimalType:
+		return "FLOAT"
+	case IntegerType:
+		return "INT"
+	case StringType:
+		return "STRING"
+	case BoolType:
+		return "BOOL"
+	}
+
+	return ""
+}
+
+// ValueType enums
+const (
+	NoneType = ValueType(iota)
+	DecimalType
+	IntegerType
+	StringType
+	QuotedStringType
+	BoolType
+)
+
+// Value is a union container
+type Value struct {
+	Type ValueType
+	raw  []rune
+
+	integer int64
+	decimal float64
+	boolean bool
+	str     string
+}
+
+func newValue(t ValueType, base int, raw []rune) (Value, error) {
+	v := Value{
+		Type: t,
+		raw:  raw,
+	}
+	var err error
+
+	switch t {
+	case DecimalType:
+		v.decimal, err = strconv.ParseFloat(string(raw), 64)
+	case IntegerType:
+		if base != 10 {
+			raw = raw[2:]
+		}
+
+		v.integer, err = strconv.ParseInt(string(raw), base, 64)
+	case StringType:
+		v.str = string(raw)
+	case QuotedStringType:
+		v.str = string(raw[1 : len(raw)-1])
+	case BoolType:
+		v.boolean = runeCompare(v.raw, runesTrue)
+	}
+
+	// issue 2253
+	//
+	// if the value trying to be parsed is too large, then we will use
+	// the 'StringType' and raw value instead.
+	if nerr, ok := err.(*strconv.NumError); ok && nerr.Err == strconv.ErrRange {
+		v.Type = StringType
+		v.str = string(raw)
+		err = nil
+	}
+
+	return v, err
+}
+
+// Append will append values and change the type to a string
+// type.
+func (v *Value) Append(tok Token) {
+	r := tok.Raw()
+	if v.Type != QuotedStringType {
+		v.Type = StringType
+		r = tok.raw[1 : len(tok.raw)-1]
+	}
+	if tok.Type() != TokenLit {
+		v.raw = append(v.raw, tok.Raw()...)
+	} else {
+		v.raw = append(v.raw, r...)
+	}
+}
+
+func (v Value) String() string {
+	switch v.Type {
+	case DecimalType:
+		return fmt.Sprintf("decimal: %f", v.decimal)
+	case IntegerType:
+		return fmt.Sprintf("integer: %d", v.integer)
+	case StringType:
+		return fmt.Sprintf("string: %s", string(v.raw))
+	case QuotedStringType:
+		return fmt.Sprintf("quoted string: %s", string(v.raw))
+	case BoolType:
+		return fmt.Sprintf("bool: %t", v.boolean)
+	default:
+		return "union not set"
+	}
+}
+
+func newLitToken(b []rune) (Token, int, error) {
+	n := 0
+	var err error
+
+	token := Token{}
+	if b[0] == '"' {
+		n, err = getStringValue(b)
+		if err != nil {
+			return token, n, err
+		}
+
+		token = newToken(TokenLit, b[:n], QuotedStringType)
+	} else if isNumberValue(b) {
+		var base int
+		base, n, err = getNumericalValue(b)
+		if err != nil {
+			return token, 0, err
+		}
+
+		value := b[:n]
+		vType := IntegerType
+		if contains(value, '.') || hasExponent(value) {
+			vType = DecimalType
+		}
+		token = newToken(TokenLit, value, vType)
+		token.base = base
+	} else if isBoolValue(b) {
+		n, err = getBoolValue(b)
+
+		token = newToken(TokenLit, b[:n], BoolType)
+	} else {
+		n, err = getValue(b)
+		token = newToken(TokenLit, b[:n], StringType)
+	}
+
+	return token, n, err
+}
+
+// IntValue returns an integer value
+func (v Value) IntValue() int64 {
+	return v.integer
+}
+
+// FloatValue returns a float value
+func (v Value) FloatValue() float64 {
+	return v.decimal
+}
+
+// BoolValue returns a bool value
+func (v Value) BoolValue() bool {
+	return v.boolean
+}
+
+func isTrimmable(r rune) bool {
+	switch r {
+	case '\n', ' ':
+		return true
+	}
+	return false
+}
+
+// StringValue returns the string value
+func (v Value) StringValue() string {
+	switch v.Type {
+	case StringType:
+		return strings.TrimFunc(string(v.raw), isTrimmable)
+	case QuotedStringType:
+		// preserve all characters in the quotes
+		return string(removeEscapedCharacters(v.raw[1 : len(v.raw)-1]))
+	default:
+		return strings.TrimFunc(string(v.raw), isTrimmable)
+	}
+}
+
+func contains(runes []rune, c rune) bool {
+	for i := 0; i < len(runes); i++ {
+		if runes[i] == c {
+			return true
+		}
+	}
+
+	return false
+}
+
+func runeCompare(v1 []rune, v2 []rune) bool {
+	if len(v1) != len(v2) {
+		return false
+	}
+
+	for i := 0; i < len(v1); i++ {
+		if v1[i] != v2[i] {
+			return false
+		}
+	}
+
+	return true
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/newline_token.go

@@ -0,0 +1,30 @@
+package ini
+
+func isNewline(b []rune) bool {
+	if len(b) == 0 {
+		return false
+	}
+
+	if b[0] == '\n' {
+		return true
+	}
+
+	if len(b) < 2 {
+		return false
+	}
+
+	return b[0] == '\r' && b[1] == '\n'
+}
+
+func newNewlineToken(b []rune) (Token, int, error) {
+	i := 1
+	if b[0] == '\r' && isNewline(b[1:]) {
+		i++
+	}
+
+	if !isNewline([]rune(b[:i])) {
+		return emptyToken, 0, NewParseError("invalid new line token")
+	}
+
+	return newToken(TokenNL, b[:i], NoneType), i, nil
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/number_helper.go

@@ -0,0 +1,152 @@
+package ini
+
+import (
+	"bytes"
+	"fmt"
+	"strconv"
+)
+
+const (
+	none = numberFormat(iota)
+	binary
+	octal
+	decimal
+	hex
+	exponent
+)
+
+type numberFormat int
+
+// numberHelper is used to dictate what format a number is in
+// and what to do for negative values. Since -1e-4 is a valid
+// number, we cannot just simply check for duplicate negatives.
+type numberHelper struct {
+	numberFormat numberFormat
+
+	negative         bool
+	negativeExponent bool
+}
+
+func (b numberHelper) Exists() bool {
+	return b.numberFormat != none
+}
+
+func (b numberHelper) IsNegative() bool {
+	return b.negative || b.negativeExponent
+}
+
+func (b *numberHelper) Determine(c rune) error {
+	if b.Exists() {
+		return NewParseError(fmt.Sprintf("multiple number formats: 0%v", string(c)))
+	}
+
+	switch c {
+	case 'b':
+		b.numberFormat = binary
+	case 'o':
+		b.numberFormat = octal
+	case 'x':
+		b.numberFormat = hex
+	case 'e', 'E':
+		b.numberFormat = exponent
+	case '-':
+		if b.numberFormat != exponent {
+			b.negative = true
+		} else {
+			b.negativeExponent = true
+		}
+	case '.':
+		b.numberFormat = decimal
+	default:
+		return NewParseError(fmt.Sprintf("invalid number character: %v", string(c)))
+	}
+
+	return nil
+}
+
+func (b numberHelper) CorrectByte(c rune) bool {
+	switch {
+	case b.numberFormat == binary:
+		if !isBinaryByte(c) {
+			return false
+		}
+	case b.numberFormat == octal:
+		if !isOctalByte(c) {
+			return false
+		}
+	case b.numberFormat == hex:
+		if !isHexByte(c) {
+			return false
+		}
+	case b.numberFormat == decimal:
+		if !isDigit(c) {
+			return false
+		}
+	case b.numberFormat == exponent:
+		if !isDigit(c) {
+			return false
+		}
+	case b.negativeExponent:
+		if !isDigit(c) {
+			return false
+		}
+	case b.negative:
+		if !isDigit(c) {
+			return false
+		}
+	default:
+		if !isDigit(c) {
+			return false
+		}
+	}
+
+	return true
+}
+
+func (b numberHelper) Base() int {
+	switch b.numberFormat {
+	case binary:
+		return 2
+	case octal:
+		return 8
+	case hex:
+		return 16
+	default:
+		return 10
+	}
+}
+
+func (b numberHelper) String() string {
+	buf := bytes.Buffer{}
+	i := 0
+
+	switch b.numberFormat {
+	case binary:
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": binary format\n")
+	case octal:
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": octal format\n")
+	case hex:
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": hex format\n")
+	case exponent:
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": exponent format\n")
+	default:
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": integer format\n")
+	}
+
+	if b.negative {
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": negative format\n")
+	}
+
+	if b.negativeExponent {
+		i++
+		buf.WriteString(strconv.Itoa(i) + ": negative exponent format\n")
+	}
+
+	return buf.String()
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/op_tokens.go

@@ -0,0 +1,39 @@
+package ini
+
+import (
+	"fmt"
+)
+
+var (
+	equalOp      = []rune("=")
+	equalColonOp = []rune(":")
+)
+
+func isOp(b []rune) bool {
+	if len(b) == 0 {
+		return false
+	}
+
+	switch b[0] {
+	case '=':
+		return true
+	case ':':
+		return true
+	default:
+		return false
+	}
+}
+
+func newOpToken(b []rune) (Token, int, error) {
+	tok := Token{}
+
+	switch b[0] {
+	case '=':
+		tok = newToken(TokenOp, equalOp, NoneType)
+	case ':':
+		tok = newToken(TokenOp, equalColonOp, NoneType)
+	default:
+		return tok, 0, NewParseError(fmt.Sprintf("unexpected op type, %v", b[0]))
+	}
+	return tok, 1, nil
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/parse_error.go

@@ -0,0 +1,43 @@
+package ini
+
+import "fmt"
+
+const (
+	// ErrCodeParseError is returned when a parsing error
+	// has occurred.
+	ErrCodeParseError = "INIParseError"
+)
+
+// ParseError is an error which is returned during any part of
+// the parsing process.
+type ParseError struct {
+	msg string
+}
+
+// NewParseError will return a new ParseError where message
+// is the description of the error.
+func NewParseError(message string) *ParseError {
+	return &ParseError{
+		msg: message,
+	}
+}
+
+// Code will return the ErrCodeParseError
+func (err *ParseError) Code() string {
+	return ErrCodeParseError
+}
+
+// Message returns the error's message
+func (err *ParseError) Message() string {
+	return err.msg
+}
+
+// OrigError return nothing since there will never be any
+// original error.
+func (err *ParseError) OrigError() error {
+	return nil
+}
+
+func (err *ParseError) Error() string {
+	return fmt.Sprintf("%s: %s", err.Code(), err.Message())
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/parse_stack.go

@@ -0,0 +1,60 @@
+package ini
+
+import (
+	"bytes"
+	"fmt"
+)
+
+// ParseStack is a stack that contains a container, the stack portion,
+// and the list which is the list of ASTs that have been successfully
+// parsed.
+type ParseStack struct {
+	top       int
+	container []AST
+	list      []AST
+	index     int
+}
+
+func newParseStack(sizeContainer, sizeList int) ParseStack {
+	return ParseStack{
+		container: make([]AST, sizeContainer),
+		list:      make([]AST, sizeList),
+	}
+}
+
+// Pop will return and truncate the last container element.
+func (s *ParseStack) Pop() AST {
+	s.top--
+	return s.container[s.top]
+}
+
+// Push will add the new AST to the container
+func (s *ParseStack) Push(ast AST) {
+	s.container[s.top] = ast
+	s.top++
+}
+
+// MarkComplete will append the AST to the list of completed statements
+func (s *ParseStack) MarkComplete(ast AST) {
+	s.list[s.index] = ast
+	s.index++
+}
+
+// List will return the completed statements
+func (s ParseStack) List() []AST {
+	return s.list[:s.index]
+}
+
+// Len will return the length of the container
+func (s *ParseStack) Len() int {
+	return s.top
+}
+
+func (s ParseStack) String() string {
+	buf := bytes.Buffer{}
+	for i, node := range s.list {
+		buf.WriteString(fmt.Sprintf("%d: %v\n", i+1, node))
+	}
+
+	return buf.String()
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/sep_tokens.go

@@ -0,0 +1,41 @@
+package ini
+
+import (
+	"fmt"
+)
+
+var (
+	emptyRunes = []rune{}
+)
+
+func isSep(b []rune) bool {
+	if len(b) == 0 {
+		return false
+	}
+
+	switch b[0] {
+	case '[', ']':
+		return true
+	default:
+		return false
+	}
+}
+
+var (
+	openBrace  = []rune("[")
+	closeBrace = []rune("]")
+)
+
+func newSepToken(b []rune) (Token, int, error) {
+	tok := Token{}
+
+	switch b[0] {
+	case '[':
+		tok = newToken(TokenSep, openBrace, NoneType)
+	case ']':
+		tok = newToken(TokenSep, closeBrace, NoneType)
+	default:
+		return tok, 0, NewParseError(fmt.Sprintf("unexpected sep type, %v", b[0]))
+	}
+	return tok, 1, nil
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/skipper.go

@@ -0,0 +1,45 @@
+package ini
+
+// skipper is used to skip certain blocks of an ini file.
+// Currently skipper is used to skip nested blocks of ini
+// files. See example below
+//
+//	[ foo ]
+//	nested = ; this section will be skipped
+//		a=b
+//		c=d
+//	bar=baz ; this will be included
+type skipper struct {
+	shouldSkip bool
+	TokenSet   bool
+	prevTok    Token
+}
+
+func newSkipper() skipper {
+	return skipper{
+		prevTok: emptyToken,
+	}
+}
+
+func (s *skipper) ShouldSkip(tok Token) bool {
+	// should skip state will be modified only if previous token was new line (NL);
+	// and the current token is not WhiteSpace (WS).
+	if s.shouldSkip &&
+		s.prevTok.Type() == TokenNL &&
+		tok.Type() != TokenWS {
+		s.Continue()
+		return false
+	}
+	s.prevTok = tok
+	return s.shouldSkip
+}
+
+func (s *skipper) Skip() {
+	s.shouldSkip = true
+}
+
+func (s *skipper) Continue() {
+	s.shouldSkip = false
+	// empty token is assigned as we return to default state, when should skip is false
+	s.prevTok = emptyToken
+}

vendor/github.com/aws/aws-sdk-go/internal/ini/statement.go

@@ -0,0 +1,35 @@
+package ini
+
+// Statement is an empty AST mostly used for transitioning states.
+func newStatement() AST {
+	return newAST(ASTKindStatement, AST{})
+}
+
+// SectionStatement represents a section AST
+func newSectionStatement(tok Token) AST {
+	return newASTWithRootToken(ASTKindSectionStatement, tok)
+}
+
+// ExprStatement represents a completed expression AST
+func newExprStatement(ast AST) AST {
+	return newAST(ASTKindExprStatement, ast)
+}
+
+// CommentStatement represents a comment in the ini definition.
+//
+//	grammar:
+//	comment -> #comment' | ;comment'
+//	comment' -> epsilon | value
+func newCommentStatement(tok Token) AST {
+	return newAST(ASTKindCommentStatement, newExpression(tok))
+}
+
+// CompletedSectionStatement represents a completed section
+func newCompletedSectionStatement(ast AST) AST {
+	return newAST(ASTKindCompletedSectionStatement, ast)
+}
+
+// SkipStatement is used to skip whole statements
+func newSkipStatement(ast AST) AST {
+	return newAST(ASTKindSkipStatement, ast)
+}