Merge pull request #1475 from restic/update-minio-go

Update to minio-go v4

Gopkg.lock

@@ -100,8 +100,8 @@
 [[projects]]
   name = "github.com/minio/minio-go"
   packages = [".","pkg/credentials","pkg/encrypt","pkg/policy","pkg/s3signer","pkg/s3utils","pkg/set"]
-  revision = "4e0f567303d4cc90ceb055a451959fb9fc391fb9"
-  version = "3.0.3"
+  revision = "57a8ae886b49af6eb0d2c27c2d007ed2f71e1da5"
+  version = "4.0.3"
 
 [[projects]]
   branch = "master"
@@ -214,6 +214,6 @@
 [solve-meta]
   analyzer-name = "dep"
   analyzer-version = 1
-  inputs-digest = "c6e2522d1b0c6832101ba15fc062074ad790648e26f481e3419a171d3579bfc4"
+  inputs-digest = "f0a207197cb502238ac87ca8e07b2640c02ec380a50b036e09ef87e40e31ca2d"
   solver-name = "gps-cdcl"
   solver-version = 1

Gopkg.toml

@@ -19,7 +19,3 @@
 # [[override]]
 #  name = "github.com/x/y"
 #  version = "2.4.0"
-
-[[constraint]]
-  name = "github.com/minio/minio-go"
-  version = "3.0.0"

internal/backend/s3/s3.go

@@ -2,8 +2,8 @@ package s3
 
 import (
 	"context"
-	"fmt"
 	"io"
+	"io/ioutil"
 	"net/http"
 	"os"
 	"path"
@@ -248,51 +248,20 @@ func (be *Backend) Path() string {
 	return be.cfg.Prefix
 }
 
-// nopCloserFile wraps *os.File and overwrites the Close() method with method
-// that does nothing. In addition, the method Len() is implemented, which
-// returns the size of the file (filesize - current offset).
-type nopCloserFile struct {
-	*os.File
-}
-
-func (f nopCloserFile) Close() error {
-	debug.Log("prevented Close()")
-	return nil
-}
-
-// Len returns the remaining length of the file (filesize - current offset).
-func (f nopCloserFile) Len() int {
-	debug.Log("Len() called")
+// lenForFile returns the length of the file.
+func lenForFile(f *os.File) (int64, error) {
 	fi, err := f.Stat()
 	if err != nil {
-		panic(err)
+		return 0, errors.Wrap(err, "Stat")
 	}
 
 	pos, err := f.Seek(0, io.SeekCurrent)
 	if err != nil {
-		panic(err)
+		return 0, errors.Wrap(err, "Seek")
 	}
 
 	size := fi.Size() - pos
-	debug.Log("returning file size %v", size)
-	return int(size)
-}
-
-type lenner interface {
-	Len() int
-	io.Reader
-}
-
-// nopCloserLenner wraps a lenner and overwrites the Close() method with method
-// that does nothing. In addition, the method Size() is implemented, which
-// returns the size of the file (filesize - current offset).
-type nopCloserLenner struct {
-	lenner
-}
-
-func (f *nopCloserLenner) Close() error {
-	debug.Log("prevented Close()")
-	return nil
+	return size, nil
 }
 
 // Save stores data in the backend at the handle.
@@ -309,26 +278,33 @@ func (be *Backend) Save(ctx context.Context, h restic.Handle, rd io.Reader) (err
 	defer be.sem.ReleaseToken()
 
 	// Check key does not already exist
-	_, err = be.client.StatObject(be.cfg.Bucket, objName)
+	_, err = be.client.StatObject(be.cfg.Bucket, objName, minio.StatObjectOptions{})
 	if err == nil {
 		debug.Log("%v already exists", h)
 		return errors.New("key already exists")
 	}
 
-	// FIXME: This is a workaround once we move to minio-go 4.0.x this can be
-	// removed and size can be directly provided.
-	if f, ok := rd.(*os.File); ok {
-		debug.Log("reader is %#T, using nopCloserFile{}", rd)
-		rd = nopCloserFile{f}
-	} else if l, ok := rd.(lenner); ok {
-		debug.Log("reader is %#T, using nopCloserLenner{}", rd)
-		rd = nopCloserLenner{l}
-	} else {
-		debug.Log("reader is %#T, no specific workaround enabled", rd)
+	var size int64 = -1
+
+	type lenner interface {
+		Len() int
 	}
 
-	debug.Log("PutObject(%v, %v)", be.cfg.Bucket, objName)
-	n, err := be.client.PutObject(be.cfg.Bucket, objName, rd, "application/octet-stream")
+	// find size for reader
+	if f, ok := rd.(*os.File); ok {
+		size, err = lenForFile(f)
+		if err != nil {
+			return err
+		}
+	} else if l, ok := rd.(lenner); ok {
+		size = int64(l.Len())
+	}
+
+	opts := minio.PutObjectOptions{}
+	opts.ContentType = "application/octet-stream"
+
+	debug.Log("PutObject(%v, %v, %v)", be.cfg.Bucket, objName, size)
+	n, err := be.client.PutObjectWithContext(ctx, be.cfg.Bucket, objName, ioutil.NopCloser(rd), size, opts)
 
 	debug.Log("%v -> %v bytes, err %#v: %v", objName, n, err, err)
 
@@ -365,19 +341,24 @@ func (be *Backend) Load(ctx context.Context, h restic.Handle, length int, offset
 	}
 
 	objName := be.Filename(h)
+	opts := minio.GetObjectOptions{}
 
-	byteRange := fmt.Sprintf("bytes=%d-", offset)
+	var err error
 	if length > 0 {
-		byteRange = fmt.Sprintf("bytes=%d-%d", offset, offset+int64(length)-1)
+		debug.Log("range: %v-%v", offset, offset+int64(length)-1)
+		err = opts.SetRange(offset, offset+int64(length)-1)
+	} else if offset > 0 {
+		debug.Log("range: %v-", offset)
+		err = opts.SetRange(offset, 0)
+	}
+
+	if err != nil {
+		return nil, errors.Wrap(err, "SetRange")
 	}
-	headers := minio.NewGetReqHeaders()
-	headers.Add("Range", byteRange)
 
 	be.sem.GetToken()
-	debug.Log("Load(%v) send range %v", h, byteRange)
-
 	coreClient := minio.Core{Client: be.client}
-	rd, _, err := coreClient.GetObject(be.cfg.Bucket, objName, headers)
+	rd, err := coreClient.GetObjectWithContext(ctx, be.cfg.Bucket, objName, opts)
 	if err != nil {
 		be.sem.ReleaseToken()
 		return nil, err
@@ -401,8 +382,10 @@ func (be *Backend) Stat(ctx context.Context, h restic.Handle) (bi restic.FileInf
 	objName := be.Filename(h)
 	var obj *minio.Object
 
+	opts := minio.GetObjectOptions{}
+
 	be.sem.GetToken()
-	obj, err = be.client.GetObject(be.cfg.Bucket, objName)
+	obj, err = be.client.GetObjectWithContext(ctx, be.cfg.Bucket, objName, opts)
 	if err != nil {
 		debug.Log("GetObject() err %v", err)
 		be.sem.ReleaseToken()
@@ -433,7 +416,7 @@ func (be *Backend) Test(ctx context.Context, h restic.Handle) (bool, error) {
 	objName := be.Filename(h)
 
 	be.sem.GetToken()
-	_, err := be.client.StatObject(be.cfg.Bucket, objName)
+	_, err := be.client.StatObject(be.cfg.Bucket, objName, minio.StatObjectOptions{})
 	be.sem.ReleaseToken()
 
 	if err == nil {

vendor/github.com/minio/minio-go/.gitignore

@@ -1,2 +1,3 @@
 *~
-*.test
+*.test
+validator

vendor/github.com/minio/minio-go/.travis.yml

@@ -9,18 +9,22 @@ env:
 - ARCH=i686
 
 go:
-- 1.5.3
-- 1.6
 - 1.7.4
-- 1.8
+- 1.8.x
+- 1.9.x
+- tip
+
+matrix:
+  fast_finish: true
+  allow_failures:
+  - go: tip
+
+addons:
+  apt:
+    packages:
+      - devscripts
 
 script:
 - diff -au <(gofmt -d .) <(printf "")
-- go get -u github.com/cheggaaa/pb/...
-- go get -u github.com/sirupsen/logrus/...
-- go get -u github.com/dustin/go-humanize/...
-- go vet ./...
-- SERVER_ENDPOINT=play.minio.io:9000 ACCESS_KEY=Q3AM3UQ867SPQQA43P2F SECRET_KEY=zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG ENABLE_HTTPS=1 go test -race -v ./...
-- SERVER_ENDPOINT=play.minio.io:9000 ACCESS_KEY=Q3AM3UQ867SPQQA43P2F SECRET_KEY=zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG ENABLE_HTTPS=1 go run functional_tests.go
-- mkdir /tmp/examples \
-  && for i in $(echo examples/s3/*); do go build -o /tmp/examples/$(basename ${i:0:-3}) ${i}; done
+- diff -au <(licensecheck --check '.go$' --recursive --lines 0 * | grep -v -w 'Apache (v2.0)') <(printf "")
+- make

vendor/github.com/minio/minio-go/MAINTAINERS.md

@@ -5,24 +5,25 @@
 Please go through this link [Maintainer Responsibility](https://gist.github.com/abperiasamy/f4d9b31d3186bbd26522)
 
 ### Making new releases
-Edit `libraryVersion` constant in `api.go`.
-
+Tag and sign your release commit, additionally this step requires you to have access to Minio's trusted private key.
+```sh
+$ export GNUPGHOME=/media/${USER}/minio/trusted
+$ git tag -s 4.0.0
+$ git push
+$ git push --tags
 ```
+
+### Update version
+Once release has been made update `libraryVersion` constant in `api.go` to next to be released version.
+
+```sh
 $ grep libraryVersion api.go
-      libraryVersion = "0.3.0"
+      libraryVersion = "4.0.1"
 ```
 
 Commit your changes
 ```
-$ git commit -a -m "Bump to new release 0.3.0" --author "Minio Trusted <trusted@minio.io>"
-```
-
-Tag and sign your release commit, additionally this step requires you to have access to Minio's trusted private key.
-```
-$ export GNUPGHOME=/path/to/trusted/key
-$ git tag -s 0.3.0
-$ git push
-$ git push --tags
+$ git commit -a -m "Update version for next release" --author "Minio Trusted <trusted@minio.io>"
 ```
 
 ### Announce
@@ -30,5 +31,5 @@ Announce new release by adding release notes at https://github.com/minio/minio-g
 
 To generate `changelog`
 ```sh
-git log --no-color --pretty=format:'-%d %s (%cr) <%an>' <latest_release_tag>..<last_release_tag>
+$ git log --no-color --pretty=format:'-%d %s (%cr) <%an>' <last_release_tag>..<latest_release_tag>
 ```

vendor/github.com/minio/minio-go/Makefile

@@ -0,0 +1,17 @@
+all: checks
+
+checks:
+	@go get -u github.com/go-ini/ini/...
+	@go get -u github.com/minio/go-homedir/...
+	@go get -u github.com/cheggaaa/pb/...
+	@go get -u github.com/sirupsen/logrus/...
+	@go get -u github.com/dustin/go-humanize/...
+	@go vet ./...
+	@SERVER_ENDPOINT=play.minio.io:9000 ACCESS_KEY=Q3AM3UQ867SPQQA43P2F SECRET_KEY=zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG ENABLE_HTTPS=1 go test -race -v ./...
+	@SERVER_ENDPOINT=play.minio.io:9000 ACCESS_KEY=Q3AM3UQ867SPQQA43P2F SECRET_KEY=zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG ENABLE_HTTPS=1 go run functional_tests.go
+	@mkdir -p /tmp/examples && for i in $(echo examples/s3/*); do go build -o /tmp/examples/$(basename ${i:0:-3}) ${i}; done
+	@go get -u github.com/a8m/mark/...
+	@go get -u github.com/minio/cli/...
+	@go get -u golang.org/x/tools/cmd/goimports
+	@go get -u github.com/gernest/wow/...
+	@go build docs/validator.go && ./validator -m docs/API.md -t docs/checker.go.tpl

vendor/github.com/minio/minio-go/NOTICE

@@ -0,0 +1,2 @@
+minio-go
+Copyright 2015-2017 Minio, Inc.

vendor/github.com/minio/minio-go/README.md

@@ -1,19 +1,7 @@
-# Minio Go Client SDK for Amazon S3 Compatible Cloud Storage [![Slack](https://slack.minio.io/slack?type=svg)](https://slack.minio.io) [![Sourcegraph](https://sourcegraph.com/github.com/minio/minio-go/-/badge.svg)](https://sourcegraph.com/github.com/minio/minio-go?badge)
+# Minio Go Client SDK for Amazon S3 Compatible Cloud Storage [![Slack](https://slack.minio.io/slack?type=svg)](https://slack.minio.io) [![Sourcegraph](https://sourcegraph.com/github.com/minio/minio-go/-/badge.svg)](https://sourcegraph.com/github.com/minio/minio-go?badge) [![Apache V2 License](http://img.shields.io/badge/license-Apache%20V2-blue.svg)](https://github.com/minio/minio-go/blob/master/LICENSE)
 
 The Minio Go Client SDK provides simple APIs to access any Amazon S3 compatible object storage.
 
-**Supported cloud storage providers:** 
-
-- AWS Signature Version 4
-   - Amazon S3
-   - Minio
-
-- AWS Signature Version 2
-   - Google Cloud Storage (Compatibility Mode)
-   - Openstack Swift + Swift3 middleware
-   - Ceph Object Gateway
-   - Riak CS
-
 This quickstart guide will show you how to install the Minio client SDK, connect to Minio, and provide a walkthrough for a simple file uploader. For a complete list of APIs and examples, please take a look at the [Go Client API Reference](https://docs.minio.io/docs/golang-client-api-reference).
 
 This document assumes that you have a working [Go development environment](https://docs.minio.io/docs/how-to-install-golang).
@@ -55,6 +43,7 @@ func main() {
 	}
 
 	log.Printf("%#v\n", minioClient) // minioClient is now setup
+}
 ```
 
 ## Quick Start Example - File Uploader
@@ -105,7 +94,7 @@ func main() {
 	contentType := "application/zip"
 
 	// Upload the zip file with FPutObject
-	n, err := minioClient.FPutObject(bucketName, objectName, filePath, contentType)
+	n, err := minioClient.FPutObject(bucketName, objectName, filePath, minio.PutObjectOptions{ContentType:contentType})
 	if err != nil {
 		log.Fatalln(err)
 	}
@@ -152,10 +141,14 @@ The full API Reference is available here.
 ### API Reference : File Object Operations
 * [`FPutObject`](https://docs.minio.io/docs/golang-client-api-reference#FPutObject)
 * [`FGetObject`](https://docs.minio.io/docs/golang-client-api-reference#FPutObject)
+* [`FPutObjectWithContext`](https://docs.minio.io/docs/golang-client-api-reference#FPutObjectWithContext)
+* [`FGetObjectWithContext`](https://docs.minio.io/docs/golang-client-api-reference#FGetObjectWithContext)
 
 ### API Reference : Object Operations
 * [`GetObject`](https://docs.minio.io/docs/golang-client-api-reference#GetObject)
 * [`PutObject`](https://docs.minio.io/docs/golang-client-api-reference#PutObject)
+* [`GetObjectWithContext`](https://docs.minio.io/docs/golang-client-api-reference#GetObjectWithContext)
+* [`PutObjectWithContext`](https://docs.minio.io/docs/golang-client-api-reference#PutObjectWithContext)
 * [`PutObjectStreaming`](https://docs.minio.io/docs/golang-client-api-reference#PutObjectStreaming)
 * [`StatObject`](https://docs.minio.io/docs/golang-client-api-reference#StatObject)
 * [`CopyObject`](https://docs.minio.io/docs/golang-client-api-reference#CopyObject)
@@ -204,10 +197,14 @@ The full API Reference is available here.
 ### Full Examples : File Object Operations
 * [fputobject.go](https://github.com/minio/minio-go/blob/master/examples/s3/fputobject.go)
 * [fgetobject.go](https://github.com/minio/minio-go/blob/master/examples/s3/fgetobject.go)
+* [fputobject-context.go](https://github.com/minio/minio-go/blob/master/examples/s3/fputobject-context.go)
+* [fgetobject-context.go](https://github.com/minio/minio-go/blob/master/examples/s3/fgetobject-context.go)
 
 ### Full Examples : Object Operations
 * [putobject.go](https://github.com/minio/minio-go/blob/master/examples/s3/putobject.go)
 * [getobject.go](https://github.com/minio/minio-go/blob/master/examples/s3/getobject.go)
+* [putobject-context.go](https://github.com/minio/minio-go/blob/master/examples/s3/putobject-context.go)
+* [getobject-context.go](https://github.com/minio/minio-go/blob/master/examples/s3/getobject-context.go)
 * [statobject.go](https://github.com/minio/minio-go/blob/master/examples/s3/statobject.go)
 * [copyobject.go](https://github.com/minio/minio-go/blob/master/examples/s3/copyobject.go)
 * [removeobject.go](https://github.com/minio/minio-go/blob/master/examples/s3/removeobject.go)
@@ -217,6 +214,7 @@ The full API Reference is available here.
 ### Full Examples : Encrypted Object Operations
 * [put-encrypted-object.go](https://github.com/minio/minio-go/blob/master/examples/s3/put-encrypted-object.go)
 * [get-encrypted-object.go](https://github.com/minio/minio-go/blob/master/examples/s3/get-encrypted-object.go)
+* [fput-encrypted-object.go](https://github.com/minio/minio-go/blob/master/examples/s3/fputencrypted-object.go)
 
 ### Full Examples : Presigned Operations
 * [presignedgetobject.go](https://github.com/minio/minio-go/blob/master/examples/s3/presignedgetobject.go)
@@ -235,3 +233,5 @@ The full API Reference is available here.
 [![Build Status](https://travis-ci.org/minio/minio-go.svg)](https://travis-ci.org/minio/minio-go)
 [![Build status](https://ci.appveyor.com/api/projects/status/1d05e6nvxcelmrak?svg=true)](https://ci.appveyor.com/project/harshavardhana/minio-go)
 
+## License
+This SDK is distributed under the [Apache License, Version 2.0](http://www.apache.org/licenses/LICENSE-2.0), see [LICENSE](./LICENSE) and [NOTICE](./NOTICE) for more information.

vendor/github.com/minio/minio-go/api-compose-object.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2017 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +18,7 @@
 package minio
 
 import (
+	"context"
 	"encoding/base64"
 	"fmt"
 	"net/http"
@@ -58,7 +60,7 @@ func (s *SSEInfo) getSSEHeaders(isCopySource bool) map[string]string {
 	return map[string]string{
 		"x-amz-" + cs + "server-side-encryption-customer-algorithm": s.algo,
 		"x-amz-" + cs + "server-side-encryption-customer-key":       base64.StdEncoding.EncodeToString(s.key),
-		"x-amz-" + cs + "server-side-encryption-customer-key-MD5":   base64.StdEncoding.EncodeToString(sumMD5(s.key)),
+		"x-amz-" + cs + "server-side-encryption-customer-key-MD5":   sumMD5Base64(s.key),
 	}
 }
 
@@ -115,7 +117,7 @@ func NewDestinationInfo(bucket, object string, encryptSSEC *SSEInfo,
 			k = k[len("x-amz-meta-"):]
 		}
 		if _, ok := m[k]; ok {
-			return d, fmt.Errorf("Cannot add both %s and x-amz-meta-%s keys as custom metadata", k, k)
+			return d, ErrInvalidArgument(fmt.Sprintf("Cannot add both %s and x-amz-meta-%s keys as custom metadata", k, k))
 		}
 		m[k] = v
 	}
@@ -243,13 +245,13 @@ func (s *SourceInfo) getProps(c Client) (size int64, etag string, userMeta map[s
 	// Get object info - need size and etag here. Also, decryption
 	// headers are added to the stat request if given.
 	var objInfo ObjectInfo
-	rh := NewGetReqHeaders()
+	opts := StatObjectOptions{}
 	for k, v := range s.decryptKey.getSSEHeaders(false) {
-		rh.Set(k, v)
+		opts.Set(k, v)
 	}
-	objInfo, err = c.statObject(s.bucket, s.object, rh)
+	objInfo, err = c.statObject(s.bucket, s.object, opts)
 	if err != nil {
-		err = fmt.Errorf("Could not stat object - %s/%s: %v", s.bucket, s.object, err)
+		err = ErrInvalidArgument(fmt.Sprintf("Could not stat object - %s/%s: %v", s.bucket, s.object, err))
 	} else {
 		size = objInfo.Size
 		etag = objInfo.ETag
@@ -265,10 +267,55 @@ func (s *SourceInfo) getProps(c Client) (size int64, etag string, userMeta map[s
 	return
 }
 
+// Low level implementation of CopyObject API, supports only upto 5GiB worth of copy.
+func (c Client) copyObjectDo(ctx context.Context, srcBucket, srcObject, destBucket, destObject string,
+	metadata map[string]string) (ObjectInfo, error) {
+
+	// Build headers.
+	headers := make(http.Header)
+
+	// Set all the metadata headers.
+	for k, v := range metadata {
+		headers.Set(k, v)
+	}
+
+	// Set the source header
+	headers.Set("x-amz-copy-source", s3utils.EncodePath(srcBucket+"/"+srcObject))
+
+	// Send upload-part-copy request
+	resp, err := c.executeMethod(ctx, "PUT", requestMetadata{
+		bucketName:   destBucket,
+		objectName:   destObject,
+		customHeader: headers,
+	})
+	defer closeResponse(resp)
+	if err != nil {
+		return ObjectInfo{}, err
+	}
+
+	// Check if we got an error response.
+	if resp.StatusCode != http.StatusOK {
+		return ObjectInfo{}, httpRespToErrorResponse(resp, srcBucket, srcObject)
+	}
+
+	cpObjRes := copyObjectResult{}
+	err = xmlDecoder(resp.Body, &cpObjRes)
+	if err != nil {
+		return ObjectInfo{}, err
+	}
+
+	objInfo := ObjectInfo{
+		Key:          destObject,
+		ETag:         strings.Trim(cpObjRes.ETag, "\""),
+		LastModified: cpObjRes.LastModified,
+	}
+	return objInfo, nil
+}
+
 // uploadPartCopy - helper function to create a part in a multipart
 // upload via an upload-part-copy request
 // https://docs.aws.amazon.com/AmazonS3/latest/API/mpUploadUploadPartCopy.html
-func (c Client) uploadPartCopy(bucket, object, uploadID string, partNumber int,
+func (c Client) uploadPartCopy(ctx context.Context, bucket, object, uploadID string, partNumber int,
 	headers http.Header) (p CompletePart, err error) {
 
 	// Build query parameters
@@ -277,7 +324,7 @@ func (c Client) uploadPartCopy(bucket, object, uploadID string, partNumber int,
 	urlValues.Set("uploadId", uploadID)
 
 	// Send upload-part-copy request
-	resp, err := c.executeMethod("PUT", requestMetadata{
+	resp, err := c.executeMethod(ctx, "PUT", requestMetadata{
 		bucketName:   bucket,
 		objectName:   object,
 		customHeader: headers,
@@ -311,7 +358,7 @@ func (c Client) ComposeObject(dst DestinationInfo, srcs []SourceInfo) error {
 	if len(srcs) < 1 || len(srcs) > maxPartsCount {
 		return ErrInvalidArgument("There must be as least one and up to 10000 source objects.")
 	}
-
+	ctx := context.Background()
 	srcSizes := make([]int64, len(srcs))
 	var totalSize, size, totalParts int64
 	var srcUserMeta map[string]string
@@ -320,7 +367,7 @@ func (c Client) ComposeObject(dst DestinationInfo, srcs []SourceInfo) error {
 	for i, src := range srcs {
 		size, etag, srcUserMeta, err = src.getProps(c)
 		if err != nil {
-			return fmt.Errorf("Could not get source props for %s/%s: %v", src.bucket, src.object, err)
+			return err
 		}
 
 		// Error out if client side encryption is used in this source object when
@@ -396,7 +443,7 @@ func (c Client) ComposeObject(dst DestinationInfo, srcs []SourceInfo) error {
 		}
 
 		// Send copy request
-		resp, err := c.executeMethod("PUT", requestMetadata{
+		resp, err := c.executeMethod(ctx, "PUT", requestMetadata{
 			bucketName:   dst.bucket,
 			objectName:   dst.object,
 			customHeader: h,
@@ -426,13 +473,13 @@ func (c Client) ComposeObject(dst DestinationInfo, srcs []SourceInfo) error {
 	if len(userMeta) == 0 && len(srcs) == 1 {
 		metaMap = srcUserMeta
 	}
-	metaHeaders := make(map[string][]string)
+	metaHeaders := make(map[string]string)
 	for k, v := range metaMap {
-		metaHeaders[k] = append(metaHeaders[k], v)
+		metaHeaders[k] = v
 	}
-	uploadID, err := c.newUploadID(dst.bucket, dst.object, metaHeaders)
+	uploadID, err := c.newUploadID(ctx, dst.bucket, dst.object, PutObjectOptions{UserMetadata: metaHeaders})
 	if err != nil {
-		return fmt.Errorf("Error creating new upload: %v", err)
+		return err
 	}
 
 	// 2. Perform copy part uploads
@@ -457,10 +504,10 @@ func (c Client) ComposeObject(dst DestinationInfo, srcs []SourceInfo) error {
 				fmt.Sprintf("bytes=%d-%d", start, end))
 
 			// make upload-part-copy request
-			complPart, err := c.uploadPartCopy(dst.bucket,
+			complPart, err := c.uploadPartCopy(ctx, dst.bucket,
 				dst.object, uploadID, partIndex, h)
 			if err != nil {
-				return fmt.Errorf("Error in upload-part-copy - %v", err)
+				return err
 			}
 			objParts = append(objParts, complPart)
 			partIndex++
@@ -468,12 +515,12 @@ func (c Client) ComposeObject(dst DestinationInfo, srcs []SourceInfo) error {
 	}
 
 	// 3. Make final complete-multipart request.
-	_, err = c.completeMultipartUpload(dst.bucket, dst.object, uploadID,
+	_, err = c.completeMultipartUpload(ctx, dst.bucket, dst.object, uploadID,
 		completeMultipartUpload{Parts: objParts})
 	if err != nil {
-		err = fmt.Errorf("Error in complete-multipart request - %v", err)
+		return err
 	}
-	return err
+	return nil
 }
 
 // partsRequired is ceiling(size / copyPartSize)

vendor/github.com/minio/minio-go/api-compose-object_test.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2017 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/api-datatypes.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/api-error-response.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016, 2017 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,7 +21,6 @@ import (
 	"encoding/xml"
 	"fmt"
 	"net/http"
-	"strconv"
 )
 
 /* **** SAMPLE ERROR RESPONSE ****
@@ -49,6 +49,9 @@ type ErrorResponse struct {
 	// only in HEAD bucket and ListObjects response.
 	Region string
 
+	// Underlying HTTP status code for the returned error
+	StatusCode int `xml:"-" json:"-"`
+
 	// Headers of the returned S3 XML error
 	Headers http.Header `xml:"-" json:"-"`
 }
@@ -100,7 +103,10 @@ func httpRespToErrorResponse(resp *http.Response, bucketName, objectName string)
 		msg := "Response is empty. " + reportIssue
 		return ErrInvalidArgument(msg)
 	}
-	var errResp ErrorResponse
+
+	errResp := ErrorResponse{
+		StatusCode: resp.StatusCode,
+	}
 
 	err := xmlDecoder(resp.Body, &errResp)
 	// Xml decoding failed with no body, fall back to HTTP headers.
@@ -109,12 +115,14 @@ func httpRespToErrorResponse(resp *http.Response, bucketName, objectName string)
 		case http.StatusNotFound:
 			if objectName == "" {
 				errResp = ErrorResponse{
+					StatusCode: resp.StatusCode,
 					Code:       "NoSuchBucket",
 					Message:    "The specified bucket does not exist.",
 					BucketName: bucketName,
 				}
 			} else {
 				errResp = ErrorResponse{
+					StatusCode: resp.StatusCode,
 					Code:       "NoSuchKey",
 					Message:    "The specified key does not exist.",
 					BucketName: bucketName,
@@ -123,6 +131,7 @@ func httpRespToErrorResponse(resp *http.Response, bucketName, objectName string)
 			}
 		case http.StatusForbidden:
 			errResp = ErrorResponse{
+				StatusCode: resp.StatusCode,
 				Code:       "AccessDenied",
 				Message:    "Access Denied.",
 				BucketName: bucketName,
@@ -130,12 +139,14 @@ func httpRespToErrorResponse(resp *http.Response, bucketName, objectName string)
 			}
 		case http.StatusConflict:
 			errResp = ErrorResponse{
+				StatusCode: resp.StatusCode,
 				Code:       "Conflict",
 				Message:    "Bucket not empty.",
 				BucketName: bucketName,
 			}
 		case http.StatusPreconditionFailed:
 			errResp = ErrorResponse{
+				StatusCode: resp.StatusCode,
 				Code:       "PreconditionFailed",
 				Message:    s3ErrorResponseMap["PreconditionFailed"],
 				BucketName: bucketName,
@@ -143,6 +154,7 @@ func httpRespToErrorResponse(resp *http.Response, bucketName, objectName string)
 			}
 		default:
 			errResp = ErrorResponse{
+				StatusCode: resp.StatusCode,
 				Code:       resp.Status,
 				Message:    resp.Status,
 				BucketName: bucketName,
@@ -150,7 +162,7 @@ func httpRespToErrorResponse(resp *http.Response, bucketName, objectName string)
 		}
 	}
 
-	// Save hodID, requestID and region information
+	// Save hostID, requestID and region information
 	// from headers if not available through error XML.
 	if errResp.RequestID == "" {
 		errResp.RequestID = resp.Header.Get("x-amz-request-id")
@@ -162,7 +174,7 @@ func httpRespToErrorResponse(resp *http.Response, bucketName, objectName string)
 		errResp.Region = resp.Header.Get("x-amz-bucket-region")
 	}
 	if errResp.Code == "InvalidRegion" && errResp.Region != "" {
-		errResp.Message = fmt.Sprintf("Region does not match, expecting region '%s'.", errResp.Region)
+		errResp.Message = fmt.Sprintf("Region does not match, expecting region ‘%s’.", errResp.Region)
 	}
 
 	// Save headers returned in the API XML error
@@ -173,10 +185,10 @@ func httpRespToErrorResponse(resp *http.Response, bucketName, objectName string)
 
 // ErrTransferAccelerationBucket - bucket name is invalid to be used with transfer acceleration.
 func ErrTransferAccelerationBucket(bucketName string) error {
-	msg := fmt.Sprintf("The name of the bucket used for Transfer Acceleration must be DNS-compliant and must not contain periods (\".\").")
 	return ErrorResponse{
+		StatusCode: http.StatusBadRequest,
 		Code:       "InvalidArgument",
-		Message:    msg,
+		Message:    "The name of the bucket used for Transfer Acceleration must be DNS-compliant and must not contain periods ‘.’.",
 		BucketName: bucketName,
 	}
 }
@@ -185,6 +197,7 @@ func ErrTransferAccelerationBucket(bucketName string) error {
 func ErrEntityTooLarge(totalSize, maxObjectSize int64, bucketName, objectName string) error {
 	msg := fmt.Sprintf("Your proposed upload size ‘%d’ exceeds the maximum allowed object size ‘%d’ for single PUT operation.", totalSize, maxObjectSize)
 	return ErrorResponse{
+		StatusCode: http.StatusBadRequest,
 		Code:       "EntityTooLarge",
 		Message:    msg,
 		BucketName: bucketName,
@@ -194,9 +207,10 @@ func ErrEntityTooLarge(totalSize, maxObjectSize int64, bucketName, objectName st
 
 // ErrEntityTooSmall - Input size is smaller than supported minimum.
 func ErrEntityTooSmall(totalSize int64, bucketName, objectName string) error {
-	msg := fmt.Sprintf("Your proposed upload size ‘%d’ is below the minimum allowed object size '0B' for single PUT operation.", totalSize)
+	msg := fmt.Sprintf("Your proposed upload size ‘%d’ is below the minimum allowed object size ‘0B’ for single PUT operation.", totalSize)
 	return ErrorResponse{
-		Code:       "EntityTooLarge",
+		StatusCode: http.StatusBadRequest,
+		Code:       "EntityTooSmall",
 		Message:    msg,
 		BucketName: bucketName,
 		Key:        objectName,
@@ -205,9 +219,9 @@ func ErrEntityTooSmall(totalSize int64, bucketName, objectName string) error {
 
 // ErrUnexpectedEOF - Unexpected end of file reached.
 func ErrUnexpectedEOF(totalRead, totalSize int64, bucketName, objectName string) error {
-	msg := fmt.Sprintf("Data read ‘%s’ is not equal to the size ‘%s’ of the input Reader.",
-		strconv.FormatInt(totalRead, 10), strconv.FormatInt(totalSize, 10))
+	msg := fmt.Sprintf("Data read ‘%d’ is not equal to the size ‘%d’ of the input Reader.", totalRead, totalSize)
 	return ErrorResponse{
+		StatusCode: http.StatusBadRequest,
 		Code:       "UnexpectedEOF",
 		Message:    msg,
 		BucketName: bucketName,
@@ -218,18 +232,20 @@ func ErrUnexpectedEOF(totalRead, totalSize int64, bucketName, objectName string)
 // ErrInvalidBucketName - Invalid bucket name response.
 func ErrInvalidBucketName(message string) error {
 	return ErrorResponse{
-		Code:      "InvalidBucketName",
-		Message:   message,
-		RequestID: "minio",
+		StatusCode: http.StatusBadRequest,
+		Code:       "InvalidBucketName",
+		Message:    message,
+		RequestID:  "minio",
 	}
 }
 
 // ErrInvalidObjectName - Invalid object name response.
 func ErrInvalidObjectName(message string) error {
 	return ErrorResponse{
-		Code:      "NoSuchKey",
-		Message:   message,
-		RequestID: "minio",
+		StatusCode: http.StatusNotFound,
+		Code:       "NoSuchKey",
+		Message:    message,
+		RequestID:  "minio",
 	}
 }
 
@@ -240,9 +256,10 @@ var ErrInvalidObjectPrefix = ErrInvalidObjectName
 // ErrInvalidArgument - Invalid argument response.
 func ErrInvalidArgument(message string) error {
 	return ErrorResponse{
-		Code:      "InvalidArgument",
-		Message:   message,
-		RequestID: "minio",
+		StatusCode: http.StatusBadRequest,
+		Code:       "InvalidArgument",
+		Message:    message,
+		RequestID:  "minio",
 	}
 }
 
@@ -250,9 +267,10 @@ func ErrInvalidArgument(message string) error {
 // The specified bucket does not have a bucket policy.
 func ErrNoSuchBucketPolicy(message string) error {
 	return ErrorResponse{
-		Code:      "NoSuchBucketPolicy",
-		Message:   message,
-		RequestID: "minio",
+		StatusCode: http.StatusNotFound,
+		Code:       "NoSuchBucketPolicy",
+		Message:    message,
+		RequestID:  "minio",
 	}
 }
 
@@ -260,8 +278,9 @@ func ErrNoSuchBucketPolicy(message string) error {
 // The specified API call is not supported
 func ErrAPINotSupported(message string) error {
 	return ErrorResponse{
-		Code:      "APINotSupported",
-		Message:   message,
-		RequestID: "minio",
+		StatusCode: http.StatusNotImplemented,
+		Code:       "APINotSupported",
+		Message:    message,
+		RequestID:  "minio",
 	}
 }

vendor/github.com/minio/minio-go/api-error-response_test.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -7,7 +8,7 @@
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
- * Unless required bZy applicable law or agreed to in writing, software
+ * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
@@ -32,20 +33,23 @@ func TestHttpRespToErrorResponse(t *testing.T) {
 	// 'genAPIErrorResponse' generates ErrorResponse for given APIError.
 	// provides a encodable populated response values.
 	genAPIErrorResponse := func(err APIError, bucketName string) ErrorResponse {
-		var errResp = ErrorResponse{}
-		errResp.Code = err.Code
-		errResp.Message = err.Description
-		errResp.BucketName = bucketName
-		return errResp
+		return ErrorResponse{
+			Code:       err.Code,
+			Message:    err.Description,
+			BucketName: bucketName,
+		}
 	}
 
 	// Encodes the response headers into XML format.
-	encodeErr := func(response interface{}) []byte {
-		var bytesBuffer bytes.Buffer
-		bytesBuffer.WriteString(xml.Header)
-		encode := xml.NewEncoder(&bytesBuffer)
-		encode.Encode(response)
-		return bytesBuffer.Bytes()
+	encodeErr := func(response ErrorResponse) []byte {
+		buf := &bytes.Buffer{}
+		buf.WriteString(xml.Header)
+		encoder := xml.NewEncoder(buf)
+		err := encoder.Encode(response)
+		if err != nil {
+			t.Fatalf("error encoding response: %v", err)
+		}
+		return buf.Bytes()
 	}
 
 	// `createAPIErrorResponse` Mocks XML error response from the server.
@@ -65,6 +69,7 @@ func TestHttpRespToErrorResponse(t *testing.T) {
 	// 'genErrResponse' contructs error response based http Status Code
 	genErrResponse := func(resp *http.Response, code, message, bucketName, objectName string) ErrorResponse {
 		errResp := ErrorResponse{
+			StatusCode: resp.StatusCode,
 			Code:       code,
 			Message:    message,
 			BucketName: bucketName,
@@ -80,9 +85,10 @@ func TestHttpRespToErrorResponse(t *testing.T) {
 	// Generate invalid argument error.
 	genInvalidError := func(message string) error {
 		errResp := ErrorResponse{
-			Code:      "InvalidArgument",
-			Message:   message,
-			RequestID: "minio",
+			StatusCode: http.StatusBadRequest,
+			Code:       "InvalidArgument",
+			Message:    message,
+			RequestID:  "minio",
 		}
 		return errResp
 	}
@@ -101,22 +107,22 @@ func TestHttpRespToErrorResponse(t *testing.T) {
 	// Set the StatusCode to the argument supplied.
 	// Sets common headers.
 	genEmptyBodyResponse := func(statusCode int) *http.Response {
-		resp := &http.Response{}
-		// set empty response body.
-		resp.Body = ioutil.NopCloser(bytes.NewBuffer([]byte("")))
-		// set headers.
+		resp := &http.Response{
+			StatusCode: statusCode,
+			Body:       ioutil.NopCloser(bytes.NewReader(nil)),
+		}
 		setCommonHeaders(resp)
-		// set status code.
-		resp.StatusCode = statusCode
 		return resp
 	}
 
 	// Decode XML error message from the http response body.
-	decodeXMLError := func(resp *http.Response, t *testing.T) error {
-		var errResp ErrorResponse
+	decodeXMLError := func(resp *http.Response) error {
+		errResp := ErrorResponse{
+			StatusCode: resp.StatusCode,
+		}
 		err := xmlDecoder(resp.Body, &errResp)
 		if err != nil {
-			t.Fatal("XML decoding of response body failed")
+			t.Fatalf("XML decoding of response body failed: %v", err)
 		}
 		return errResp
 	}
@@ -134,12 +140,12 @@ func TestHttpRespToErrorResponse(t *testing.T) {
 	// Used for asserting the actual response.
 	expectedErrResponse := []error{
 		genInvalidError("Response is empty. " + "Please report this issue at https://github.com/minio/minio-go/issues."),
-		decodeXMLError(createAPIErrorResponse(APIErrors[0], "minio-bucket"), t),
-		genErrResponse(setCommonHeaders(&http.Response{}), "NoSuchBucket", "The specified bucket does not exist.", "minio-bucket", ""),
-		genErrResponse(setCommonHeaders(&http.Response{}), "NoSuchKey", "The specified key does not exist.", "minio-bucket", "Asia/"),
-		genErrResponse(setCommonHeaders(&http.Response{}), "AccessDenied", "Access Denied.", "minio-bucket", ""),
-		genErrResponse(setCommonHeaders(&http.Response{}), "Conflict", "Bucket not empty.", "minio-bucket", ""),
-		genErrResponse(setCommonHeaders(&http.Response{}), "Bad Request", "Bad Request", "minio-bucket", ""),
+		decodeXMLError(createAPIErrorResponse(APIErrors[0], "minio-bucket")),
+		genErrResponse(setCommonHeaders(&http.Response{StatusCode: http.StatusNotFound}), "NoSuchBucket", "The specified bucket does not exist.", "minio-bucket", ""),
+		genErrResponse(setCommonHeaders(&http.Response{StatusCode: http.StatusNotFound}), "NoSuchKey", "The specified key does not exist.", "minio-bucket", "Asia/"),
+		genErrResponse(setCommonHeaders(&http.Response{StatusCode: http.StatusForbidden}), "AccessDenied", "Access Denied.", "minio-bucket", ""),
+		genErrResponse(setCommonHeaders(&http.Response{StatusCode: http.StatusConflict}), "Conflict", "Bucket not empty.", "minio-bucket", ""),
+		genErrResponse(setCommonHeaders(&http.Response{StatusCode: http.StatusBadRequest}), "Bad Request", "Bad Request", "minio-bucket", ""),
 	}
 
 	// List of http response to be used as input.
@@ -182,6 +188,7 @@ func TestHttpRespToErrorResponse(t *testing.T) {
 func TestErrEntityTooLarge(t *testing.T) {
 	msg := fmt.Sprintf("Your proposed upload size ‘%d’ exceeds the maximum allowed object size ‘%d’ for single PUT operation.", 1000000, 99999)
 	expectedResult := ErrorResponse{
+		StatusCode: http.StatusBadRequest,
 		Code:       "EntityTooLarge",
 		Message:    msg,
 		BucketName: "minio-bucket",
@@ -189,22 +196,23 @@ func TestErrEntityTooLarge(t *testing.T) {
 	}
 	actualResult := ErrEntityTooLarge(1000000, 99999, "minio-bucket", "Asia/")
 	if !reflect.DeepEqual(expectedResult, actualResult) {
-		t.Errorf("Expected result to be '%+v', but instead got '%+v'", expectedResult, actualResult)
+		t.Errorf("Expected result to be '%#v', but instead got '%#v'", expectedResult, actualResult)
 	}
 }
 
 // Test validates 'ErrEntityTooSmall' error response.
 func TestErrEntityTooSmall(t *testing.T) {
-	msg := fmt.Sprintf("Your proposed upload size ‘%d’ is below the minimum allowed object size '0B' for single PUT operation.", -1)
+	msg := fmt.Sprintf("Your proposed upload size ‘%d’ is below the minimum allowed object size ‘0B’ for single PUT operation.", -1)
 	expectedResult := ErrorResponse{
-		Code:       "EntityTooLarge",
+		StatusCode: http.StatusBadRequest,
+		Code:       "EntityTooSmall",
 		Message:    msg,
 		BucketName: "minio-bucket",
 		Key:        "Asia/",
 	}
 	actualResult := ErrEntityTooSmall(-1, "minio-bucket", "Asia/")
 	if !reflect.DeepEqual(expectedResult, actualResult) {
-		t.Errorf("Expected result to be '%+v', but instead got '%+v'", expectedResult, actualResult)
+		t.Errorf("Expected result to be '%#v', but instead got '%#v'", expectedResult, actualResult)
 	}
 }
 
@@ -213,6 +221,7 @@ func TestErrUnexpectedEOF(t *testing.T) {
 	msg := fmt.Sprintf("Data read ‘%s’ is not equal to the size ‘%s’ of the input Reader.",
 		strconv.FormatInt(100, 10), strconv.FormatInt(101, 10))
 	expectedResult := ErrorResponse{
+		StatusCode: http.StatusBadRequest,
 		Code:       "UnexpectedEOF",
 		Message:    msg,
 		BucketName: "minio-bucket",
@@ -220,46 +229,49 @@ func TestErrUnexpectedEOF(t *testing.T) {
 	}
 	actualResult := ErrUnexpectedEOF(100, 101, "minio-bucket", "Asia/")
 	if !reflect.DeepEqual(expectedResult, actualResult) {
-		t.Errorf("Expected result to be '%+v', but instead got '%+v'", expectedResult, actualResult)
+		t.Errorf("Expected result to be '%#v', but instead got '%#v'", expectedResult, actualResult)
 	}
 }
 
 // Test validates 'ErrInvalidBucketName' error response.
 func TestErrInvalidBucketName(t *testing.T) {
 	expectedResult := ErrorResponse{
-		Code:      "InvalidBucketName",
-		Message:   "Invalid Bucket name",
-		RequestID: "minio",
+		StatusCode: http.StatusBadRequest,
+		Code:       "InvalidBucketName",
+		Message:    "Invalid Bucket name",
+		RequestID:  "minio",
 	}
 	actualResult := ErrInvalidBucketName("Invalid Bucket name")
 	if !reflect.DeepEqual(expectedResult, actualResult) {
-		t.Errorf("Expected result to be '%+v', but instead got '%+v'", expectedResult, actualResult)
+		t.Errorf("Expected result to be '%#v', but instead got '%#v'", expectedResult, actualResult)
 	}
 }
 
 // Test validates 'ErrInvalidObjectName' error response.
 func TestErrInvalidObjectName(t *testing.T) {
 	expectedResult := ErrorResponse{
-		Code:      "NoSuchKey",
-		Message:   "Invalid Object Key",
-		RequestID: "minio",
+		StatusCode: http.StatusNotFound,
+		Code:       "NoSuchKey",
+		Message:    "Invalid Object Key",
+		RequestID:  "minio",
 	}
 	actualResult := ErrInvalidObjectName("Invalid Object Key")
 	if !reflect.DeepEqual(expectedResult, actualResult) {
-		t.Errorf("Expected result to be '%+v', but instead got '%+v'", expectedResult, actualResult)
+		t.Errorf("Expected result to be '%#v', but instead got '%#v'", expectedResult, actualResult)
 	}
 }
 
 // Test validates 'ErrInvalidArgument' response.
 func TestErrInvalidArgument(t *testing.T) {
 	expectedResult := ErrorResponse{
-		Code:      "InvalidArgument",
-		Message:   "Invalid Argument",
-		RequestID: "minio",
+		StatusCode: http.StatusBadRequest,
+		Code:       "InvalidArgument",
+		Message:    "Invalid Argument",
+		RequestID:  "minio",
 	}
 	actualResult := ErrInvalidArgument("Invalid Argument")
 	if !reflect.DeepEqual(expectedResult, actualResult) {
-		t.Errorf("Expected result to be '%+v', but instead got '%+v'", expectedResult, actualResult)
+		t.Errorf("Expected result to be '%#v', but instead got '%#v'", expectedResult, actualResult)
 	}
 }
 

vendor/github.com/minio/minio-go/api-get-object-context.go

@@ -1,8 +1,6 @@
-// +build go1.5,!go1.6,!go1.7,!go1.8
-
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2017 Minio, Inc.
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,21 +17,10 @@
 
 package minio
 
-import (
-	"net/http"
-	"time"
-)
+import "context"
 
-// This default transport is similar to http.DefaultTransport
-// but with additional DisableCompression:
-var defaultMinioTransport http.RoundTripper = &http.Transport{
-	Proxy:               http.ProxyFromEnvironment,
-	TLSHandshakeTimeout: 10 * time.Second,
-	// Set this value so that the underlying transport round-tripper
-	// doesn't try to auto decode the body of objects with
-	// content-encoding set to `gzip`.
-	//
-	// Refer:
-	//    https://golang.org/src/net/http/transport.go?h=roundTrip#L1843
-	DisableCompression: true,
+// GetObjectWithContext - returns an seekable, readable object.
+// The options can be used to specify the GET request further.
+func (c Client) GetObjectWithContext(ctx context.Context, bucketName, objectName string, opts GetObjectOptions) (*Object, error) {
+	return c.getObjectWithContext(ctx, bucketName, objectName, opts)
 }

vendor/github.com/minio/minio-go/api-get-object-file.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -21,11 +22,34 @@ import (
 	"os"
 	"path/filepath"
 
+	"github.com/minio/minio-go/pkg/encrypt"
+
+	"context"
+
 	"github.com/minio/minio-go/pkg/s3utils"
 )
 
+// FGetObjectWithContext - download contents of an object to a local file.
+// The options can be used to specify the GET request further.
+func (c Client) FGetObjectWithContext(ctx context.Context, bucketName, objectName, filePath string, opts GetObjectOptions) error {
+	return c.fGetObjectWithContext(ctx, bucketName, objectName, filePath, opts)
+}
+
 // FGetObject - download contents of an object to a local file.
-func (c Client) FGetObject(bucketName, objectName, filePath string) error {
+func (c Client) FGetObject(bucketName, objectName, filePath string, opts GetObjectOptions) error {
+	return c.fGetObjectWithContext(context.Background(), bucketName, objectName, filePath, opts)
+}
+
+// FGetEncryptedObject - Decrypt and store an object at filePath.
+func (c Client) FGetEncryptedObject(bucketName, objectName, filePath string, materials encrypt.Materials) error {
+	if materials == nil {
+		return ErrInvalidArgument("Unable to recognize empty encryption properties")
+	}
+	return c.FGetObject(bucketName, objectName, filePath, GetObjectOptions{Materials: materials})
+}
+
+// fGetObjectWithContext - fgetObject wrapper function with context
+func (c Client) fGetObjectWithContext(ctx context.Context, bucketName, objectName, filePath string, opts GetObjectOptions) error {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return err
@@ -60,7 +84,7 @@ func (c Client) FGetObject(bucketName, objectName, filePath string) error {
 	}
 
 	// Gather md5sum.
-	objectStat, err := c.StatObject(bucketName, objectName)
+	objectStat, err := c.StatObject(bucketName, objectName, StatObjectOptions{opts})
 	if err != nil {
 		return err
 	}
@@ -82,13 +106,12 @@ func (c Client) FGetObject(bucketName, objectName, filePath string) error {
 
 	// Initialize get object request headers to set the
 	// appropriate range offsets to read from.
-	reqHeaders := NewGetReqHeaders()
 	if st.Size() > 0 {
-		reqHeaders.SetRange(st.Size(), 0)
+		opts.SetRange(st.Size(), 0)
 	}
 
 	// Seek to current position for incoming reader.
-	objectReader, objectStat, err := c.getObject(bucketName, objectName, reqHeaders)
+	objectReader, objectStat, err := c.getObject(ctx, bucketName, objectName, opts)
 	if err != nil {
 		return err
 	}

vendor/github.com/minio/minio-go/api-get-object.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016, 2017 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +18,7 @@
 package minio
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"io"
@@ -36,27 +38,16 @@ func (c Client) GetEncryptedObject(bucketName, objectName string, encryptMateria
 		return nil, ErrInvalidArgument("Unable to recognize empty encryption properties")
 	}
 
-	// Fetch encrypted object
-	encReader, err := c.GetObject(bucketName, objectName)
-	if err != nil {
-		return nil, err
-	}
-	// Stat object to get its encryption metadata
-	st, err := encReader.Stat()
-	if err != nil {
-		return nil, err
-	}
-
-	// Setup object for decrytion, object is transparently
-	// decrypted as the consumer starts reading.
-	encryptMaterials.SetupDecryptMode(encReader, st.Metadata.Get(amzHeaderIV), st.Metadata.Get(amzHeaderKey))
-
-	// Success.
-	return encryptMaterials, nil
+	return c.GetObject(bucketName, objectName, GetObjectOptions{Materials: encryptMaterials})
 }
 
 // GetObject - returns an seekable, readable object.
-func (c Client) GetObject(bucketName, objectName string) (*Object, error) {
+func (c Client) GetObject(bucketName, objectName string, opts GetObjectOptions) (*Object, error) {
+	return c.getObjectWithContext(context.Background(), bucketName, objectName, opts)
+}
+
+// GetObject wrapper function that accepts a request context
+func (c Client) getObjectWithContext(ctx context.Context, bucketName, objectName string, opts GetObjectOptions) (*Object, error) {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return nil, err
@@ -102,34 +93,26 @@ func (c Client) GetObject(bucketName, objectName string) (*Object, error) {
 				if req.isFirstReq {
 					// First request is a Read/ReadAt.
 					if req.isReadOp {
-						reqHeaders := NewGetReqHeaders()
 						// Differentiate between wanting the whole object and just a range.
 						if req.isReadAt {
 							// If this is a ReadAt request only get the specified range.
 							// Range is set with respect to the offset and length of the buffer requested.
 							// Do not set objectInfo from the first readAt request because it will not get
 							// the whole object.
-							reqHeaders.SetRange(req.Offset, req.Offset+int64(len(req.Buffer))-1)
-							httpReader, objectInfo, err = c.getObject(bucketName, objectName, reqHeaders)
-						} else {
-							if req.Offset > 0 {
-								reqHeaders.SetRange(req.Offset, 0)
-							}
-
-							// First request is a Read request.
-							httpReader, objectInfo, err = c.getObject(bucketName, objectName, reqHeaders)
+							opts.SetRange(req.Offset, req.Offset+int64(len(req.Buffer))-1)
+						} else if req.Offset > 0 {
+							opts.SetRange(req.Offset, 0)
 						}
+						httpReader, objectInfo, err = c.getObject(ctx, bucketName, objectName, opts)
 						if err != nil {
-							resCh <- getResponse{
-								Error: err,
-							}
+							resCh <- getResponse{Error: err}
 							return
 						}
 						etag = objectInfo.ETag
 						// Read at least firstReq.Buffer bytes, if not we have
 						// reached our EOF.
 						size, err := io.ReadFull(httpReader, req.Buffer)
-						if err == io.ErrUnexpectedEOF {
+						if size > 0 && err == io.ErrUnexpectedEOF {
 							// If an EOF happens after reading some but not
 							// all the bytes ReadFull returns ErrUnexpectedEOF
 							err = io.EOF
@@ -144,7 +127,7 @@ func (c Client) GetObject(bucketName, objectName string) (*Object, error) {
 					} else {
 						// First request is a Stat or Seek call.
 						// Only need to run a StatObject until an actual Read or ReadAt request comes through.
-						objectInfo, err = c.StatObject(bucketName, objectName)
+						objectInfo, err = c.statObject(bucketName, objectName, StatObjectOptions{opts})
 						if err != nil {
 							resCh <- getResponse{
 								Error: err,
@@ -159,11 +142,10 @@ func (c Client) GetObject(bucketName, objectName string) (*Object, error) {
 						}
 					}
 				} else if req.settingObjectInfo { // Request is just to get objectInfo.
-					reqHeaders := NewGetReqHeaders()
 					if etag != "" {
-						reqHeaders.SetMatchETag(etag)
+						opts.SetMatchETag(etag)
 					}
-					objectInfo, err := c.statObject(bucketName, objectName, reqHeaders)
+					objectInfo, err := c.statObject(bucketName, objectName, StatObjectOptions{opts})
 					if err != nil {
 						resCh <- getResponse{
 							Error: err,
@@ -183,9 +165,8 @@ func (c Client) GetObject(bucketName, objectName string) (*Object, error) {
 					// new ones when they haven't been already.
 					// All readAt requests are new requests.
 					if req.DidOffsetChange || !req.beenRead {
-						reqHeaders := NewGetReqHeaders()
 						if etag != "" {
-							reqHeaders.SetMatchETag(etag)
+							opts.SetMatchETag(etag)
 						}
 						if httpReader != nil {
 							// Close previously opened http reader.
@@ -194,16 +175,11 @@ func (c Client) GetObject(bucketName, objectName string) (*Object, error) {
 						// If this request is a readAt only get the specified range.
 						if req.isReadAt {
 							// Range is set with respect to the offset and length of the buffer requested.
-							reqHeaders.SetRange(req.Offset, req.Offset+int64(len(req.Buffer))-1)
-							httpReader, _, err = c.getObject(bucketName, objectName, reqHeaders)
-						} else {
-							// Range is set with respect to the offset.
-							if req.Offset > 0 {
-								reqHeaders.SetRange(req.Offset, 0)
-							}
-
-							httpReader, objectInfo, err = c.getObject(bucketName, objectName, reqHeaders)
+							opts.SetRange(req.Offset, req.Offset+int64(len(req.Buffer))-1)
+						} else if req.Offset > 0 { // Range is set with respect to the offset.
+							opts.SetRange(req.Offset, 0)
 						}
+						httpReader, objectInfo, err = c.getObject(ctx, bucketName, objectName, opts)
 						if err != nil {
 							resCh <- getResponse{
 								Error: err,
@@ -626,7 +602,7 @@ func newObject(reqCh chan<- getRequest, resCh <-chan getResponse, doneCh chan<-
 //
 // For more information about the HTTP Range header.
 // go to http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.35.
-func (c Client) getObject(bucketName, objectName string, reqHeaders RequestHeaders) (io.ReadCloser, ObjectInfo, error) {
+func (c Client) getObject(ctx context.Context, bucketName, objectName string, opts GetObjectOptions) (io.ReadCloser, ObjectInfo, error) {
 	// Validate input arguments.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return nil, ObjectInfo{}, err
@@ -635,18 +611,12 @@ func (c Client) getObject(bucketName, objectName string, reqHeaders RequestHeade
 		return nil, ObjectInfo{}, err
 	}
 
-	// Set all the necessary reqHeaders.
-	customHeader := make(http.Header)
-	for key, value := range reqHeaders.Header {
-		customHeader[key] = value
-	}
-
 	// Execute GET on objectName.
-	resp, err := c.executeMethod("GET", requestMetadata{
-		bucketName:         bucketName,
-		objectName:         objectName,
-		customHeader:       customHeader,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(ctx, "GET", requestMetadata{
+		bucketName:       bucketName,
+		objectName:       objectName,
+		customHeader:     opts.Header(),
+		contentSHA256Hex: emptySHA256Hex,
 	})
 	if err != nil {
 		return nil, ObjectInfo{}, err
@@ -692,6 +662,15 @@ func (c Client) getObject(bucketName, objectName string, reqHeaders RequestHeade
 		Metadata: extractObjMetadata(resp.Header),
 	}
 
+	reader := resp.Body
+	if opts.Materials != nil {
+		err = opts.Materials.SetupDecryptMode(reader, objectStat.Metadata.Get(amzHeaderIV), objectStat.Metadata.Get(amzHeaderKey))
+		if err != nil {
+			return nil, ObjectInfo{}, err
+		}
+		reader = opts.Materials
+	}
+
 	// do not close body here, caller will close
-	return resp.Body, objectStat, nil
+	return reader, objectStat, nil
 }

vendor/github.com/minio/minio-go/api-get-options.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2016-17 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,80 +21,94 @@ import (
 	"fmt"
 	"net/http"
 	"time"
+
+	"github.com/minio/minio-go/pkg/encrypt"
 )
 
-// RequestHeaders - implement methods for setting special
-// request headers for GET, HEAD object operations.
-// http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectGET.html
-type RequestHeaders struct {
-	http.Header
+// GetObjectOptions are used to specify additional headers or options
+// during GET requests.
+type GetObjectOptions struct {
+	headers map[string]string
+
+	Materials encrypt.Materials
 }
 
-// NewGetReqHeaders - initializes a new request headers for GET request.
-func NewGetReqHeaders() RequestHeaders {
-	return RequestHeaders{
-		Header: make(http.Header),
-	}
+// StatObjectOptions are used to specify additional headers or options
+// during GET info/stat requests.
+type StatObjectOptions struct {
+	GetObjectOptions
 }
 
-// NewHeadReqHeaders - initializes a new request headers for HEAD request.
-func NewHeadReqHeaders() RequestHeaders {
-	return RequestHeaders{
-		Header: make(http.Header),
+// Header returns the http.Header representation of the GET options.
+func (o GetObjectOptions) Header() http.Header {
+	headers := make(http.Header, len(o.headers))
+	for k, v := range o.headers {
+		headers.Set(k, v)
 	}
+	return headers
+}
+
+// Set adds a key value pair to the options. The
+// key-value pair will be part of the HTTP GET request
+// headers.
+func (o *GetObjectOptions) Set(key, value string) {
+	if o.headers == nil {
+		o.headers = make(map[string]string)
+	}
+	o.headers[http.CanonicalHeaderKey(key)] = value
 }
 
 // SetMatchETag - set match etag.
-func (c RequestHeaders) SetMatchETag(etag string) error {
+func (o *GetObjectOptions) SetMatchETag(etag string) error {
 	if etag == "" {
 		return ErrInvalidArgument("ETag cannot be empty.")
 	}
-	c.Set("If-Match", "\""+etag+"\"")
+	o.Set("If-Match", "\""+etag+"\"")
 	return nil
 }
 
 // SetMatchETagExcept - set match etag except.
-func (c RequestHeaders) SetMatchETagExcept(etag string) error {
+func (o *GetObjectOptions) SetMatchETagExcept(etag string) error {
 	if etag == "" {
 		return ErrInvalidArgument("ETag cannot be empty.")
 	}
-	c.Set("If-None-Match", "\""+etag+"\"")
+	o.Set("If-None-Match", "\""+etag+"\"")
 	return nil
 }
 
 // SetUnmodified - set unmodified time since.
-func (c RequestHeaders) SetUnmodified(modTime time.Time) error {
+func (o *GetObjectOptions) SetUnmodified(modTime time.Time) error {
 	if modTime.IsZero() {
 		return ErrInvalidArgument("Modified since cannot be empty.")
 	}
-	c.Set("If-Unmodified-Since", modTime.Format(http.TimeFormat))
+	o.Set("If-Unmodified-Since", modTime.Format(http.TimeFormat))
 	return nil
 }
 
 // SetModified - set modified time since.
-func (c RequestHeaders) SetModified(modTime time.Time) error {
+func (o *GetObjectOptions) SetModified(modTime time.Time) error {
 	if modTime.IsZero() {
 		return ErrInvalidArgument("Modified since cannot be empty.")
 	}
-	c.Set("If-Modified-Since", modTime.Format(http.TimeFormat))
+	o.Set("If-Modified-Since", modTime.Format(http.TimeFormat))
 	return nil
 }
 
 // SetRange - set the start and end offset of the object to be read.
 // See https://tools.ietf.org/html/rfc7233#section-3.1 for reference.
-func (c RequestHeaders) SetRange(start, end int64) error {
+func (o *GetObjectOptions) SetRange(start, end int64) error {
 	switch {
 	case start == 0 && end < 0:
 		// Read last '-end' bytes. `bytes=-N`.
-		c.Set("Range", fmt.Sprintf("bytes=%d", end))
+		o.Set("Range", fmt.Sprintf("bytes=%d", end))
 	case 0 < start && end == 0:
 		// Read everything starting from offset
 		// 'start'. `bytes=N-`.
-		c.Set("Range", fmt.Sprintf("bytes=%d-", start))
+		o.Set("Range", fmt.Sprintf("bytes=%d-", start))
 	case 0 <= start && start <= end:
 		// Read everything starting at 'start' till the
 		// 'end'. `bytes=N-M`
-		c.Set("Range", fmt.Sprintf("bytes=%d-%d", start, end))
+		o.Set("Range", fmt.Sprintf("bytes=%d-%d", start, end))
 	default:
 		// All other cases such as
 		// bytes=-3-

vendor/github.com/minio/minio-go/api-get-policy.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +18,7 @@
 package minio
 
 import (
+	"context"
 	"encoding/json"
 	"io/ioutil"
 	"net/http"
@@ -79,10 +81,10 @@ func (c Client) getBucketPolicy(bucketName string) (policy.BucketAccessPolicy, e
 	urlValues.Set("policy", "")
 
 	// Execute GET on bucket to list objects.
-	resp, err := c.executeMethod("GET", requestMetadata{
-		bucketName:         bucketName,
-		queryValues:        urlValues,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(context.Background(), "GET", requestMetadata{
+		bucketName:       bucketName,
+		queryValues:      urlValues,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 
 	defer closeResponse(resp)

vendor/github.com/minio/minio-go/api-list.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +18,7 @@
 package minio
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"net/http"
@@ -38,7 +40,7 @@ import (
 //
 func (c Client) ListBuckets() ([]BucketInfo, error) {
 	// Execute GET on service.
-	resp, err := c.executeMethod("GET", requestMetadata{contentSHA256Bytes: emptySHA256})
+	resp, err := c.executeMethod(context.Background(), "GET", requestMetadata{contentSHA256Hex: emptySHA256Hex})
 	defer closeResponse(resp)
 	if err != nil {
 		return nil, err
@@ -215,10 +217,10 @@ func (c Client) listObjectsV2Query(bucketName, objectPrefix, continuationToken s
 	urlValues.Set("max-keys", fmt.Sprintf("%d", maxkeys))
 
 	// Execute GET on bucket to list objects.
-	resp, err := c.executeMethod("GET", requestMetadata{
-		bucketName:         bucketName,
-		queryValues:        urlValues,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(context.Background(), "GET", requestMetadata{
+		bucketName:       bucketName,
+		queryValues:      urlValues,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 	defer closeResponse(resp)
 	if err != nil {
@@ -393,10 +395,10 @@ func (c Client) listObjectsQuery(bucketName, objectPrefix, objectMarker, delimit
 	urlValues.Set("max-keys", fmt.Sprintf("%d", maxkeys))
 
 	// Execute GET on bucket to list objects.
-	resp, err := c.executeMethod("GET", requestMetadata{
-		bucketName:         bucketName,
-		queryValues:        urlValues,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(context.Background(), "GET", requestMetadata{
+		bucketName:       bucketName,
+		queryValues:      urlValues,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 	defer closeResponse(resp)
 	if err != nil {
@@ -572,10 +574,10 @@ func (c Client) listMultipartUploadsQuery(bucketName, keyMarker, uploadIDMarker,
 	urlValues.Set("max-uploads", fmt.Sprintf("%d", maxUploads))
 
 	// Execute GET on bucketName to list multipart uploads.
-	resp, err := c.executeMethod("GET", requestMetadata{
-		bucketName:         bucketName,
-		queryValues:        urlValues,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(context.Background(), "GET", requestMetadata{
+		bucketName:       bucketName,
+		queryValues:      urlValues,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 	defer closeResponse(resp)
 	if err != nil {
@@ -690,11 +692,11 @@ func (c Client) listObjectPartsQuery(bucketName, objectName, uploadID string, pa
 	urlValues.Set("max-parts", fmt.Sprintf("%d", maxParts))
 
 	// Execute GET on objectName to get list of parts.
-	resp, err := c.executeMethod("GET", requestMetadata{
-		bucketName:         bucketName,
-		objectName:         objectName,
-		queryValues:        urlValues,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(context.Background(), "GET", requestMetadata{
+		bucketName:       bucketName,
+		objectName:       objectName,
+		queryValues:      urlValues,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 	defer closeResponse(resp)
 	if err != nil {

vendor/github.com/minio/minio-go/api-notification.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,6 +19,7 @@ package minio
 
 import (
 	"bufio"
+	"context"
 	"encoding/json"
 	"io"
 	"net/http"
@@ -46,10 +48,10 @@ func (c Client) getBucketNotification(bucketName string) (BucketNotification, er
 	urlValues.Set("notification", "")
 
 	// Execute GET on bucket to list objects.
-	resp, err := c.executeMethod("GET", requestMetadata{
-		bucketName:         bucketName,
-		queryValues:        urlValues,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(context.Background(), "GET", requestMetadata{
+		bucketName:       bucketName,
+		queryValues:      urlValues,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 
 	defer closeResponse(resp)
@@ -150,7 +152,7 @@ func (c Client) ListenBucketNotification(bucketName, prefix, suffix string, even
 		// Check ARN partition to verify if listening bucket is supported
 		if s3utils.IsAmazonEndpoint(c.endpointURL) || s3utils.IsGoogleEndpoint(c.endpointURL) {
 			notificationInfoCh <- NotificationInfo{
-				Err: ErrAPINotSupported("Listening bucket notification is specific only to `minio` partitions"),
+				Err: ErrAPINotSupported("Listening for bucket notification is specific only to `minio` server endpoints"),
 			}
 			return
 		}
@@ -170,13 +172,16 @@ func (c Client) ListenBucketNotification(bucketName, prefix, suffix string, even
 			urlValues["events"] = events
 
 			// Execute GET on bucket to list objects.
-			resp, err := c.executeMethod("GET", requestMetadata{
-				bucketName:         bucketName,
-				queryValues:        urlValues,
-				contentSHA256Bytes: emptySHA256,
+			resp, err := c.executeMethod(context.Background(), "GET", requestMetadata{
+				bucketName:       bucketName,
+				queryValues:      urlValues,
+				contentSHA256Hex: emptySHA256Hex,
 			})
 			if err != nil {
-				continue
+				notificationInfoCh <- NotificationInfo{
+					Err: err,
+				}
+				return
 			}
 
 			// Validate http response, upon error return quickly.

vendor/github.com/minio/minio-go/api-presigned.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,6 +19,7 @@ package minio
 
 import (
 	"errors"
+	"net/http"
 	"net/url"
 	"time"
 
@@ -25,16 +27,6 @@ import (
 	"github.com/minio/minio-go/pkg/s3utils"
 )
 
-// supportedGetReqParams - supported request parameters for GET presigned request.
-var supportedGetReqParams = map[string]struct{}{
-	"response-expires":             {},
-	"response-content-type":        {},
-	"response-cache-control":       {},
-	"response-content-language":    {},
-	"response-content-encoding":    {},
-	"response-content-disposition": {},
-}
-
 // presignURL - Returns a presigned URL for an input 'method'.
 // Expires maximum is 7days - ie. 604800 and minimum is 1.
 func (c Client) presignURL(method string, bucketName string, objectName string, expires time.Duration, reqParams url.Values) (u *url.URL, err error) {
@@ -42,42 +34,27 @@ func (c Client) presignURL(method string, bucketName string, objectName string,
 	if method == "" {
 		return nil, ErrInvalidArgument("method cannot be empty.")
 	}
-	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
+	if err = s3utils.CheckValidBucketName(bucketName); err != nil {
 		return nil, err
 	}
-	if err := s3utils.CheckValidObjectName(objectName); err != nil {
-		return nil, err
-	}
-	if err := isValidExpiry(expires); err != nil {
+	if err = isValidExpiry(expires); err != nil {
 		return nil, err
 	}
 
 	// Convert expires into seconds.
 	expireSeconds := int64(expires / time.Second)
 	reqMetadata := requestMetadata{
-		presignURL: true,
-		bucketName: bucketName,
-		objectName: objectName,
-		expires:    expireSeconds,
-	}
-
-	// For "GET" we are handling additional request parameters to
-	// override its response headers.
-	if method == "GET" {
-		// Verify if input map has unsupported params, if yes exit.
-		for k := range reqParams {
-			if _, ok := supportedGetReqParams[k]; !ok {
-				return nil, ErrInvalidArgument(k + " unsupported request parameter for presigned GET.")
-			}
-		}
-		// Save the request parameters to be used in presigning for GET request.
-		reqMetadata.queryValues = reqParams
+		presignURL:  true,
+		bucketName:  bucketName,
+		objectName:  objectName,
+		expires:     expireSeconds,
+		queryValues: reqParams,
 	}
 
 	// Instantiate a new request.
 	// Since expires is set newRequest will presign the request.
-	req, err := c.newRequest(method, reqMetadata)
-	if err != nil {
+	var req *http.Request
+	if req, err = c.newRequest(method, reqMetadata); err != nil {
 		return nil, err
 	}
 	return req.URL, nil
@@ -88,6 +65,9 @@ func (c Client) presignURL(method string, bucketName string, objectName string,
 // upto 7days or a minimum of 1sec. Additionally you can override
 // a set of response headers using the query parameters.
 func (c Client) PresignedGetObject(bucketName string, objectName string, expires time.Duration, reqParams url.Values) (u *url.URL, err error) {
+	if err = s3utils.CheckValidObjectName(objectName); err != nil {
+		return nil, err
+	}
 	return c.presignURL("GET", bucketName, objectName, expires, reqParams)
 }
 
@@ -96,6 +76,9 @@ func (c Client) PresignedGetObject(bucketName string, objectName string, expires
 // upto 7days or a minimum of 1sec. Additionally you can override
 // a set of response headers using the query parameters.
 func (c Client) PresignedHeadObject(bucketName string, objectName string, expires time.Duration, reqParams url.Values) (u *url.URL, err error) {
+	if err = s3utils.CheckValidObjectName(objectName); err != nil {
+		return nil, err
+	}
 	return c.presignURL("HEAD", bucketName, objectName, expires, reqParams)
 }
 
@@ -103,6 +86,9 @@ func (c Client) PresignedHeadObject(bucketName string, objectName string, expire
 // without credentials. URL can have a maximum expiry of upto 7days
 // or a minimum of 1sec.
 func (c Client) PresignedPutObject(bucketName string, objectName string, expires time.Duration) (u *url.URL, err error) {
+	if err = s3utils.CheckValidObjectName(objectName); err != nil {
+		return nil, err
+	}
 	return c.presignURL("PUT", bucketName, objectName, expires, nil)
 }
 

vendor/github.com/minio/minio-go/api-put-bucket.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2015, 2016, 2017 Minio, Inc.
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,6 +19,7 @@ package minio
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"encoding/xml"
 	"fmt"
@@ -75,14 +76,14 @@ func (c Client) MakeBucket(bucketName string, location string) (err error) {
 		if err != nil {
 			return err
 		}
-		reqMetadata.contentMD5Bytes = sumMD5(createBucketConfigBytes)
-		reqMetadata.contentSHA256Bytes = sum256(createBucketConfigBytes)
+		reqMetadata.contentMD5Base64 = sumMD5Base64(createBucketConfigBytes)
+		reqMetadata.contentSHA256Hex = sum256Hex(createBucketConfigBytes)
 		reqMetadata.contentBody = bytes.NewReader(createBucketConfigBytes)
 		reqMetadata.contentLength = int64(len(createBucketConfigBytes))
 	}
 
 	// Execute PUT to create a new bucket.
-	resp, err := c.executeMethod("PUT", reqMetadata)
+	resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return err
@@ -161,16 +162,16 @@ func (c Client) putBucketPolicy(bucketName string, policyInfo policy.BucketAcces
 
 	policyBuffer := bytes.NewReader(policyBytes)
 	reqMetadata := requestMetadata{
-		bucketName:         bucketName,
-		queryValues:        urlValues,
-		contentBody:        policyBuffer,
-		contentLength:      int64(len(policyBytes)),
-		contentMD5Bytes:    sumMD5(policyBytes),
-		contentSHA256Bytes: sum256(policyBytes),
+		bucketName:       bucketName,
+		queryValues:      urlValues,
+		contentBody:      policyBuffer,
+		contentLength:    int64(len(policyBytes)),
+		contentMD5Base64: sumMD5Base64(policyBytes),
+		contentSHA256Hex: sum256Hex(policyBytes),
 	}
 
 	// Execute PUT to upload a new bucket policy.
-	resp, err := c.executeMethod("PUT", reqMetadata)
+	resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return err
@@ -195,10 +196,10 @@ func (c Client) removeBucketPolicy(bucketName string) error {
 	urlValues.Set("policy", "")
 
 	// Execute DELETE on objectName.
-	resp, err := c.executeMethod("DELETE", requestMetadata{
-		bucketName:         bucketName,
-		queryValues:        urlValues,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(context.Background(), "DELETE", requestMetadata{
+		bucketName:       bucketName,
+		queryValues:      urlValues,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 	defer closeResponse(resp)
 	if err != nil {
@@ -226,16 +227,16 @@ func (c Client) SetBucketNotification(bucketName string, bucketNotification Buck
 
 	notifBuffer := bytes.NewReader(notifBytes)
 	reqMetadata := requestMetadata{
-		bucketName:         bucketName,
-		queryValues:        urlValues,
-		contentBody:        notifBuffer,
-		contentLength:      int64(len(notifBytes)),
-		contentMD5Bytes:    sumMD5(notifBytes),
-		contentSHA256Bytes: sum256(notifBytes),
+		bucketName:       bucketName,
+		queryValues:      urlValues,
+		contentBody:      notifBuffer,
+		contentLength:    int64(len(notifBytes)),
+		contentMD5Base64: sumMD5Base64(notifBytes),
+		contentSHA256Hex: sum256Hex(notifBytes),
 	}
 
 	// Execute PUT to upload a new bucket notification.
-	resp, err := c.executeMethod("PUT", reqMetadata)
+	resp, err := c.executeMethod(context.Background(), "PUT", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return err

vendor/github.com/minio/minio-go/api-put-object-common.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +18,7 @@
 package minio
 
 import (
+	"context"
 	"io"
 	"math"
 	"os"
@@ -24,12 +26,6 @@ import (
 	"github.com/minio/minio-go/pkg/s3utils"
 )
 
-// Verify if reader is *os.File
-func isFile(reader io.Reader) (ok bool) {
-	_, ok = reader.(*os.File)
-	return
-}
-
 // Verify if reader is *minio.Object
 func isObject(reader io.Reader) (ok bool) {
 	_, ok = reader.(*Object)
@@ -39,6 +35,26 @@ func isObject(reader io.Reader) (ok bool) {
 // Verify if reader is a generic ReaderAt
 func isReadAt(reader io.Reader) (ok bool) {
 	_, ok = reader.(io.ReaderAt)
+	if ok {
+		var v *os.File
+		v, ok = reader.(*os.File)
+		if ok {
+			// Stdin, Stdout and Stderr all have *os.File type
+			// which happen to also be io.ReaderAt compatible
+			// we need to add special conditions for them to
+			// be ignored by this function.
+			for _, f := range []string{
+				"/dev/stdin",
+				"/dev/stdout",
+				"/dev/stderr",
+			} {
+				if f == v.Name() {
+					ok = false
+					break
+				}
+			}
+		}
+	}
 	return
 }
 
@@ -77,7 +93,7 @@ func optimalPartInfo(objectSize int64) (totalPartsCount int, partSize int64, las
 
 // getUploadID - fetch upload id if already present for an object name
 // or initiate a new request to fetch a new upload id.
-func (c Client) newUploadID(bucketName, objectName string, metaData map[string][]string) (uploadID string, err error) {
+func (c Client) newUploadID(ctx context.Context, bucketName, objectName string, opts PutObjectOptions) (uploadID string, err error) {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return "", err
@@ -87,7 +103,7 @@ func (c Client) newUploadID(bucketName, objectName string, metaData map[string][
 	}
 
 	// Initiate multipart upload for an object.
-	initMultipartUploadResult, err := c.initiateMultipartUpload(bucketName, objectName, metaData)
+	initMultipartUploadResult, err := c.initiateMultipartUpload(ctx, bucketName, objectName, opts)
 	if err != nil {
 		return "", err
 	}

vendor/github.com/minio/minio-go/api-put-object-context.go

@@ -0,0 +1,39 @@
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package minio
+
+import (
+	"context"
+	"io"
+)
+
+// PutObjectWithContext - Identical to PutObject call, but accepts context to facilitate request cancellation.
+func (c Client) PutObjectWithContext(ctx context.Context, bucketName, objectName string, reader io.Reader, objectSize int64,
+	opts PutObjectOptions) (n int64, err error) {
+	err = opts.validate()
+	if err != nil {
+		return 0, err
+	}
+	if opts.EncryptMaterials != nil {
+		if err = opts.EncryptMaterials.SetupEncryptMode(reader); err != nil {
+			return 0, err
+		}
+		return c.putObjectMultipartStreamNoLength(ctx, bucketName, objectName, opts.EncryptMaterials, opts)
+	}
+	return c.putObjectCommon(ctx, bucketName, objectName, reader, objectSize, opts)
+}

vendor/github.com/minio/minio-go/api-put-object-copy.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/api-put-object-encrypted.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,13 +18,14 @@
 package minio
 
 import (
+	"context"
 	"io"
 
 	"github.com/minio/minio-go/pkg/encrypt"
 )
 
 // PutEncryptedObject - Encrypt and store object.
-func (c Client) PutEncryptedObject(bucketName, objectName string, reader io.Reader, encryptMaterials encrypt.Materials, metadata map[string][]string, progress io.Reader) (n int64, err error) {
+func (c Client) PutEncryptedObject(bucketName, objectName string, reader io.Reader, encryptMaterials encrypt.Materials) (n int64, err error) {
 
 	if encryptMaterials == nil {
 		return 0, ErrInvalidArgument("Unable to recognize empty encryption properties")
@@ -33,14 +35,10 @@ func (c Client) PutEncryptedObject(bucketName, objectName string, reader io.Read
 		return 0, err
 	}
 
-	if metadata == nil {
-		metadata = make(map[string][]string)
-	}
+	return c.PutObjectWithContext(context.Background(), bucketName, objectName, reader, -1, PutObjectOptions{EncryptMaterials: encryptMaterials})
+}
 
-	// Set the necessary encryption headers, for future decryption.
-	metadata[amzHeaderIV] = []string{encryptMaterials.GetIV()}
-	metadata[amzHeaderKey] = []string{encryptMaterials.GetKey()}
-	metadata[amzHeaderMatDesc] = []string{encryptMaterials.GetDesc()}
-
-	return c.putObjectMultipartStreamNoLength(bucketName, objectName, encryptMaterials, metadata, progress)
+// FPutEncryptedObject - Encrypt and store an object with contents from file at filePath.
+func (c Client) FPutEncryptedObject(bucketName, objectName, filePath string, encryptMaterials encrypt.Materials) (n int64, err error) {
+	return c.FPutObjectWithContext(context.Background(), bucketName, objectName, filePath, PutObjectOptions{EncryptMaterials: encryptMaterials})
 }

vendor/github.com/minio/minio-go/api-put-object-file-context.go

@@ -0,0 +1,64 @@
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package minio
+
+import (
+	"context"
+	"mime"
+	"os"
+	"path/filepath"
+
+	"github.com/minio/minio-go/pkg/s3utils"
+)
+
+// FPutObjectWithContext - Create an object in a bucket, with contents from file at filePath. Allows request cancellation.
+func (c Client) FPutObjectWithContext(ctx context.Context, bucketName, objectName, filePath string, opts PutObjectOptions) (n int64, err error) {
+	// Input validation.
+	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
+		return 0, err
+	}
+	if err := s3utils.CheckValidObjectName(objectName); err != nil {
+		return 0, err
+	}
+
+	// Open the referenced file.
+	fileReader, err := os.Open(filePath)
+	// If any error fail quickly here.
+	if err != nil {
+		return 0, err
+	}
+	defer fileReader.Close()
+
+	// Save the file stat.
+	fileStat, err := fileReader.Stat()
+	if err != nil {
+		return 0, err
+	}
+
+	// Save the file size.
+	fileSize := fileStat.Size()
+
+	// Set contentType based on filepath extension if not given or default
+	// value of "application/octet-stream" if the extension has no associated type.
+	if opts.ContentType == "" {
+		if opts.ContentType = mime.TypeByExtension(filepath.Ext(filePath)); opts.ContentType == "" {
+			opts.ContentType = "application/octet-stream"
+		}
+	}
+	return c.PutObjectWithContext(ctx, bucketName, objectName, fileReader, fileSize, opts)
+}

vendor/github.com/minio/minio-go/api-put-object-file.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,50 +18,10 @@
 package minio
 
 import (
-	"mime"
-	"os"
-	"path/filepath"
-
-	"github.com/minio/minio-go/pkg/s3utils"
+	"context"
 )
 
-// FPutObject - Create an object in a bucket, with contents from file at filePath.
-func (c Client) FPutObject(bucketName, objectName, filePath, contentType string) (n int64, err error) {
-	// Input validation.
-	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
-		return 0, err
-	}
-	if err := s3utils.CheckValidObjectName(objectName); err != nil {
-		return 0, err
-	}
-
-	// Open the referenced file.
-	fileReader, err := os.Open(filePath)
-	// If any error fail quickly here.
-	if err != nil {
-		return 0, err
-	}
-	defer fileReader.Close()
-
-	// Save the file stat.
-	fileStat, err := fileReader.Stat()
-	if err != nil {
-		return 0, err
-	}
-
-	// Save the file size.
-	fileSize := fileStat.Size()
-
-	objMetadata := make(map[string][]string)
-
-	// Set contentType based on filepath extension if not given or default
-	// value of "binary/octet-stream" if the extension has no associated type.
-	if contentType == "" {
-		if contentType = mime.TypeByExtension(filepath.Ext(filePath)); contentType == "" {
-			contentType = "application/octet-stream"
-		}
-	}
-
-	objMetadata["Content-Type"] = []string{contentType}
-	return c.putObjectCommon(bucketName, objectName, fileReader, fileSize, objMetadata, nil)
+// FPutObject - Create an object in a bucket, with contents from file at filePath
+func (c Client) FPutObject(bucketName, objectName, filePath string, opts PutObjectOptions) (n int64, err error) {
+	return c.FPutObjectWithContext(context.Background(), bucketName, objectName, filePath, opts)
 }

vendor/github.com/minio/minio-go/api-put-object-multipart.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,6 +19,9 @@ package minio
 
 import (
 	"bytes"
+	"context"
+	"encoding/base64"
+	"encoding/hex"
 	"encoding/xml"
 	"fmt"
 	"io"
@@ -32,9 +36,9 @@ import (
 	"github.com/minio/minio-go/pkg/s3utils"
 )
 
-func (c Client) putObjectMultipart(bucketName, objectName string, reader io.Reader, size int64,
-	metadata map[string][]string, progress io.Reader) (n int64, err error) {
-	n, err = c.putObjectMultipartNoStream(bucketName, objectName, reader, metadata, progress)
+func (c Client) putObjectMultipart(ctx context.Context, bucketName, objectName string, reader io.Reader, size int64,
+	opts PutObjectOptions) (n int64, err error) {
+	n, err = c.putObjectMultipartNoStream(ctx, bucketName, objectName, reader, opts)
 	if err != nil {
 		errResp := ToErrorResponse(err)
 		// Verify if multipart functionality is not available, if not
@@ -45,13 +49,13 @@ func (c Client) putObjectMultipart(bucketName, objectName string, reader io.Read
 				return 0, ErrEntityTooLarge(size, maxSinglePutObjectSize, bucketName, objectName)
 			}
 			// Fall back to uploading as single PutObject operation.
-			return c.putObjectNoChecksum(bucketName, objectName, reader, size, metadata, progress)
+			return c.putObjectNoChecksum(ctx, bucketName, objectName, reader, size, opts)
 		}
 	}
 	return n, err
 }
 
-func (c Client) putObjectMultipartNoStream(bucketName, objectName string, reader io.Reader, metadata map[string][]string, progress io.Reader) (n int64, err error) {
+func (c Client) putObjectMultipartNoStream(ctx context.Context, bucketName, objectName string, reader io.Reader, opts PutObjectOptions) (n int64, err error) {
 	// Input validation.
 	if err = s3utils.CheckValidBucketName(bucketName); err != nil {
 		return 0, err
@@ -74,14 +78,14 @@ func (c Client) putObjectMultipartNoStream(bucketName, objectName string, reader
 	}
 
 	// Initiate a new multipart upload.
-	uploadID, err := c.newUploadID(bucketName, objectName, metadata)
+	uploadID, err := c.newUploadID(ctx, bucketName, objectName, opts)
 	if err != nil {
 		return 0, err
 	}
 
 	defer func() {
 		if err != nil {
-			c.abortMultipartUpload(bucketName, objectName, uploadID)
+			c.abortMultipartUpload(ctx, bucketName, objectName, uploadID)
 		}
 	}()
 
@@ -117,12 +121,24 @@ func (c Client) putObjectMultipartNoStream(bucketName, objectName string, reader
 
 		// Update progress reader appropriately to the latest offset
 		// as we read from the source.
-		rd := newHook(bytes.NewReader(buf[:length]), progress)
+		rd := newHook(bytes.NewReader(buf[:length]), opts.Progress)
+
+		// Checksums..
+		var (
+			md5Base64 string
+			sha256Hex string
+		)
+		if hashSums["md5"] != nil {
+			md5Base64 = base64.StdEncoding.EncodeToString(hashSums["md5"])
+		}
+		if hashSums["sha256"] != nil {
+			sha256Hex = hex.EncodeToString(hashSums["sha256"])
+		}
 
 		// Proceed to upload the part.
 		var objPart ObjectPart
-		objPart, err = c.uploadPart(bucketName, objectName, uploadID, rd, partNumber,
-			hashSums["md5"], hashSums["sha256"], int64(length), metadata)
+		objPart, err = c.uploadPart(ctx, bucketName, objectName, uploadID, rd, partNumber,
+			md5Base64, sha256Hex, int64(length), opts.UserMetadata)
 		if err != nil {
 			return totalUploadedSize, err
 		}
@@ -158,7 +174,7 @@ func (c Client) putObjectMultipartNoStream(bucketName, objectName string, reader
 
 	// Sort all completed parts.
 	sort.Sort(completedParts(complMultipartUpload.Parts))
-	if _, err = c.completeMultipartUpload(bucketName, objectName, uploadID, complMultipartUpload); err != nil {
+	if _, err = c.completeMultipartUpload(ctx, bucketName, objectName, uploadID, complMultipartUpload); err != nil {
 		return totalUploadedSize, err
 	}
 
@@ -167,7 +183,7 @@ func (c Client) putObjectMultipartNoStream(bucketName, objectName string, reader
 }
 
 // initiateMultipartUpload - Initiates a multipart upload and returns an upload ID.
-func (c Client) initiateMultipartUpload(bucketName, objectName string, metadata map[string][]string) (initiateMultipartUploadResult, error) {
+func (c Client) initiateMultipartUpload(ctx context.Context, bucketName, objectName string, opts PutObjectOptions) (initiateMultipartUploadResult, error) {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return initiateMultipartUploadResult{}, err
@@ -181,17 +197,7 @@ func (c Client) initiateMultipartUpload(bucketName, objectName string, metadata
 	urlValues.Set("uploads", "")
 
 	// Set ContentType header.
-	customHeader := make(http.Header)
-	for k, v := range metadata {
-		if len(v) > 0 {
-			customHeader.Set(k, v[0])
-		}
-	}
-
-	// Set a default content-type header if the latter is not provided
-	if v, ok := metadata["Content-Type"]; !ok || len(v) == 0 {
-		customHeader.Set("Content-Type", "application/octet-stream")
-	}
+	customHeader := opts.Header()
 
 	reqMetadata := requestMetadata{
 		bucketName:   bucketName,
@@ -201,7 +207,7 @@ func (c Client) initiateMultipartUpload(bucketName, objectName string, metadata
 	}
 
 	// Execute POST on an objectName to initiate multipart upload.
-	resp, err := c.executeMethod("POST", reqMetadata)
+	resp, err := c.executeMethod(ctx, "POST", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return initiateMultipartUploadResult{}, err
@@ -223,8 +229,8 @@ func (c Client) initiateMultipartUpload(bucketName, objectName string, metadata
 const serverEncryptionKeyPrefix = "x-amz-server-side-encryption"
 
 // uploadPart - Uploads a part in a multipart upload.
-func (c Client) uploadPart(bucketName, objectName, uploadID string, reader io.Reader,
-	partNumber int, md5Sum, sha256Sum []byte, size int64, metadata map[string][]string) (ObjectPart, error) {
+func (c Client) uploadPart(ctx context.Context, bucketName, objectName, uploadID string, reader io.Reader,
+	partNumber int, md5Base64, sha256Hex string, size int64, metadata map[string]string) (ObjectPart, error) {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return ObjectPart{}, err
@@ -257,24 +263,24 @@ func (c Client) uploadPart(bucketName, objectName, uploadID string, reader io.Re
 	for k, v := range metadata {
 		if len(v) > 0 {
 			if strings.HasPrefix(strings.ToLower(k), serverEncryptionKeyPrefix) {
-				customHeader.Set(k, v[0])
+				customHeader.Set(k, v)
 			}
 		}
 	}
 
 	reqMetadata := requestMetadata{
-		bucketName:         bucketName,
-		objectName:         objectName,
-		queryValues:        urlValues,
-		customHeader:       customHeader,
-		contentBody:        reader,
-		contentLength:      size,
-		contentMD5Bytes:    md5Sum,
-		contentSHA256Bytes: sha256Sum,
+		bucketName:       bucketName,
+		objectName:       objectName,
+		queryValues:      urlValues,
+		customHeader:     customHeader,
+		contentBody:      reader,
+		contentLength:    size,
+		contentMD5Base64: md5Base64,
+		contentSHA256Hex: sha256Hex,
 	}
 
 	// Execute PUT on each part.
-	resp, err := c.executeMethod("PUT", reqMetadata)
+	resp, err := c.executeMethod(ctx, "PUT", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return ObjectPart{}, err
@@ -295,7 +301,7 @@ func (c Client) uploadPart(bucketName, objectName, uploadID string, reader io.Re
 }
 
 // completeMultipartUpload - Completes a multipart upload by assembling previously uploaded parts.
-func (c Client) completeMultipartUpload(bucketName, objectName, uploadID string,
+func (c Client) completeMultipartUpload(ctx context.Context, bucketName, objectName, uploadID string,
 	complete completeMultipartUpload) (completeMultipartUploadResult, error) {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
@@ -308,7 +314,6 @@ func (c Client) completeMultipartUpload(bucketName, objectName, uploadID string,
 	// Initialize url queries.
 	urlValues := make(url.Values)
 	urlValues.Set("uploadId", uploadID)
-
 	// Marshal complete multipart body.
 	completeMultipartUploadBytes, err := xml.Marshal(complete)
 	if err != nil {
@@ -318,16 +323,16 @@ func (c Client) completeMultipartUpload(bucketName, objectName, uploadID string,
 	// Instantiate all the complete multipart buffer.
 	completeMultipartUploadBuffer := bytes.NewReader(completeMultipartUploadBytes)
 	reqMetadata := requestMetadata{
-		bucketName:         bucketName,
-		objectName:         objectName,
-		queryValues:        urlValues,
-		contentBody:        completeMultipartUploadBuffer,
-		contentLength:      int64(len(completeMultipartUploadBytes)),
-		contentSHA256Bytes: sum256(completeMultipartUploadBytes),
+		bucketName:       bucketName,
+		objectName:       objectName,
+		queryValues:      urlValues,
+		contentBody:      completeMultipartUploadBuffer,
+		contentLength:    int64(len(completeMultipartUploadBytes)),
+		contentSHA256Hex: sum256Hex(completeMultipartUploadBytes),
 	}
 
 	// Execute POST to complete multipart upload for an objectName.
-	resp, err := c.executeMethod("POST", reqMetadata)
+	resp, err := c.executeMethod(ctx, "POST", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return completeMultipartUploadResult{}, err

vendor/github.com/minio/minio-go/api-put-object-streaming.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2017 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +18,7 @@
 package minio
 
 import (
+	"context"
 	"fmt"
 	"io"
 	"net/http"
@@ -26,33 +28,23 @@ import (
 	"github.com/minio/minio-go/pkg/s3utils"
 )
 
-// PutObjectStreaming using AWS streaming signature V4
-func (c Client) PutObjectStreaming(bucketName, objectName string, reader io.Reader) (n int64, err error) {
-	return c.PutObjectWithProgress(bucketName, objectName, reader, nil, nil)
-}
-
 // putObjectMultipartStream - upload a large object using
 // multipart upload and streaming signature for signing payload.
 // Comprehensive put object operation involving multipart uploads.
 //
 // Following code handles these types of readers.
 //
-//  - *os.File
 //  - *minio.Object
 //  - Any reader which has a method 'ReadAt()'
 //
-func (c Client) putObjectMultipartStream(bucketName, objectName string,
-	reader io.Reader, size int64, metadata map[string][]string, progress io.Reader) (n int64, err error) {
+func (c Client) putObjectMultipartStream(ctx context.Context, bucketName, objectName string,
+	reader io.Reader, size int64, opts PutObjectOptions) (n int64, err error) {
 
-	// Verify if reader is *minio.Object, *os.File or io.ReaderAt.
-	// NOTE: Verification of object is kept for a specific purpose
-	// while it is going to be duck typed similar to io.ReaderAt.
-	// It is to indicate that *minio.Object implements io.ReaderAt.
-	// and such a functionality is used in the subsequent code path.
-	if isFile(reader) || !isObject(reader) && isReadAt(reader) {
-		n, err = c.putObjectMultipartStreamFromReadAt(bucketName, objectName, reader.(io.ReaderAt), size, metadata, progress)
+	if !isObject(reader) && isReadAt(reader) {
+		// Verify if the reader implements ReadAt and it is not a *minio.Object then we will use parallel uploader.
+		n, err = c.putObjectMultipartStreamFromReadAt(ctx, bucketName, objectName, reader.(io.ReaderAt), size, opts)
 	} else {
-		n, err = c.putObjectMultipartStreamNoChecksum(bucketName, objectName, reader, size, metadata, progress)
+		n, err = c.putObjectMultipartStreamNoChecksum(ctx, bucketName, objectName, reader, size, opts)
 	}
 	if err != nil {
 		errResp := ToErrorResponse(err)
@@ -64,7 +56,7 @@ func (c Client) putObjectMultipartStream(bucketName, objectName string,
 				return 0, ErrEntityTooLarge(size, maxSinglePutObjectSize, bucketName, objectName)
 			}
 			// Fall back to uploading as single PutObject operation.
-			return c.putObjectNoChecksum(bucketName, objectName, reader, size, metadata, progress)
+			return c.putObjectNoChecksum(ctx, bucketName, objectName, reader, size, opts)
 		}
 	}
 	return n, err
@@ -94,8 +86,8 @@ type uploadPartReq struct {
 // temporary files for staging all the data, these temporary files are
 // cleaned automatically when the caller i.e http client closes the
 // stream after uploading all the contents successfully.
-func (c Client) putObjectMultipartStreamFromReadAt(bucketName, objectName string,
-	reader io.ReaderAt, size int64, metadata map[string][]string, progress io.Reader) (n int64, err error) {
+func (c Client) putObjectMultipartStreamFromReadAt(ctx context.Context, bucketName, objectName string,
+	reader io.ReaderAt, size int64, opts PutObjectOptions) (n int64, err error) {
 	// Input validation.
 	if err = s3utils.CheckValidBucketName(bucketName); err != nil {
 		return 0, err
@@ -111,7 +103,7 @@ func (c Client) putObjectMultipartStreamFromReadAt(bucketName, objectName string
 	}
 
 	// Initiate a new multipart upload.
-	uploadID, err := c.newUploadID(bucketName, objectName, metadata)
+	uploadID, err := c.newUploadID(ctx, bucketName, objectName, opts)
 	if err != nil {
 		return 0, err
 	}
@@ -122,7 +114,7 @@ func (c Client) putObjectMultipartStreamFromReadAt(bucketName, objectName string
 	// to relinquish storage space.
 	defer func() {
 		if err != nil {
-			c.abortMultipartUpload(bucketName, objectName, uploadID)
+			c.abortMultipartUpload(ctx, bucketName, objectName, uploadID)
 		}
 	}()
 
@@ -150,9 +142,8 @@ func (c Client) putObjectMultipartStreamFromReadAt(bucketName, objectName string
 		uploadPartsCh <- uploadPartReq{PartNum: p, Part: nil}
 	}
 	close(uploadPartsCh)
-
 	// Receive each part number from the channel allowing three parallel uploads.
-	for w := 1; w <= totalWorkers; w++ {
+	for w := 1; w <= opts.getNumThreads(); w++ {
 		go func(partSize int64) {
 			// Each worker will draw from the part channel and upload in parallel.
 			for uploadReq := range uploadPartsCh {
@@ -170,13 +161,13 @@ func (c Client) putObjectMultipartStreamFromReadAt(bucketName, objectName string
 				}
 
 				// Get a section reader on a particular offset.
-				sectionReader := newHook(io.NewSectionReader(reader, readOffset, partSize), progress)
+				sectionReader := newHook(io.NewSectionReader(reader, readOffset, partSize), opts.Progress)
 
 				// Proceed to upload the part.
 				var objPart ObjectPart
-				objPart, err = c.uploadPart(bucketName, objectName, uploadID,
+				objPart, err = c.uploadPart(ctx, bucketName, objectName, uploadID,
 					sectionReader, uploadReq.PartNum,
-					nil, nil, partSize, metadata)
+					"", "", partSize, opts.UserMetadata)
 				if err != nil {
 					uploadedPartsCh <- uploadedPartRes{
 						Size:  0,
@@ -229,7 +220,7 @@ func (c Client) putObjectMultipartStreamFromReadAt(bucketName, objectName string
 
 	// Sort all completed parts.
 	sort.Sort(completedParts(complMultipartUpload.Parts))
-	_, err = c.completeMultipartUpload(bucketName, objectName, uploadID, complMultipartUpload)
+	_, err = c.completeMultipartUpload(ctx, bucketName, objectName, uploadID, complMultipartUpload)
 	if err != nil {
 		return totalUploadedSize, err
 	}
@@ -238,8 +229,8 @@ func (c Client) putObjectMultipartStreamFromReadAt(bucketName, objectName string
 	return totalUploadedSize, nil
 }
 
-func (c Client) putObjectMultipartStreamNoChecksum(bucketName, objectName string,
-	reader io.Reader, size int64, metadata map[string][]string, progress io.Reader) (n int64, err error) {
+func (c Client) putObjectMultipartStreamNoChecksum(ctx context.Context, bucketName, objectName string,
+	reader io.Reader, size int64, opts PutObjectOptions) (n int64, err error) {
 	// Input validation.
 	if err = s3utils.CheckValidBucketName(bucketName); err != nil {
 		return 0, err
@@ -253,9 +244,8 @@ func (c Client) putObjectMultipartStreamNoChecksum(bucketName, objectName string
 	if err != nil {
 		return 0, err
 	}
-
 	// Initiates a new multipart request
-	uploadID, err := c.newUploadID(bucketName, objectName, metadata)
+	uploadID, err := c.newUploadID(ctx, bucketName, objectName, opts)
 	if err != nil {
 		return 0, err
 	}
@@ -266,7 +256,7 @@ func (c Client) putObjectMultipartStreamNoChecksum(bucketName, objectName string
 	// storage space.
 	defer func() {
 		if err != nil {
-			c.abortMultipartUpload(bucketName, objectName, uploadID)
+			c.abortMultipartUpload(ctx, bucketName, objectName, uploadID)
 		}
 	}()
 
@@ -281,17 +271,16 @@ func (c Client) putObjectMultipartStreamNoChecksum(bucketName, objectName string
 	for partNumber = 1; partNumber <= totalPartsCount; partNumber++ {
 		// Update progress reader appropriately to the latest offset
 		// as we read from the source.
-		hookReader := newHook(reader, progress)
+		hookReader := newHook(reader, opts.Progress)
 
 		// Proceed to upload the part.
 		if partNumber == totalPartsCount {
 			partSize = lastPartSize
 		}
-
 		var objPart ObjectPart
-		objPart, err = c.uploadPart(bucketName, objectName, uploadID,
+		objPart, err = c.uploadPart(ctx, bucketName, objectName, uploadID,
 			io.LimitReader(hookReader, partSize),
-			partNumber, nil, nil, partSize, metadata)
+			partNumber, "", "", partSize, opts.UserMetadata)
 		if err != nil {
 			return totalUploadedSize, err
 		}
@@ -328,7 +317,7 @@ func (c Client) putObjectMultipartStreamNoChecksum(bucketName, objectName string
 
 	// Sort all completed parts.
 	sort.Sort(completedParts(complMultipartUpload.Parts))
-	_, err = c.completeMultipartUpload(bucketName, objectName, uploadID, complMultipartUpload)
+	_, err = c.completeMultipartUpload(ctx, bucketName, objectName, uploadID, complMultipartUpload)
 	if err != nil {
 		return totalUploadedSize, err
 	}
@@ -339,7 +328,7 @@ func (c Client) putObjectMultipartStreamNoChecksum(bucketName, objectName string
 
 // putObjectNoChecksum special function used Google Cloud Storage. This special function
 // is used for Google Cloud Storage since Google's multipart API is not S3 compatible.
-func (c Client) putObjectNoChecksum(bucketName, objectName string, reader io.Reader, size int64, metaData map[string][]string, progress io.Reader) (n int64, err error) {
+func (c Client) putObjectNoChecksum(ctx context.Context, bucketName, objectName string, reader io.Reader, size int64, opts PutObjectOptions) (n int64, err error) {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return 0, err
@@ -355,17 +344,22 @@ func (c Client) putObjectNoChecksum(bucketName, objectName string, reader io.Rea
 	}
 	if size > 0 {
 		if isReadAt(reader) && !isObject(reader) {
-			reader = io.NewSectionReader(reader.(io.ReaderAt), 0, size)
+			seeker, _ := reader.(io.Seeker)
+			offset, err := seeker.Seek(0, io.SeekCurrent)
+			if err != nil {
+				return 0, ErrInvalidArgument(err.Error())
+			}
+			reader = io.NewSectionReader(reader.(io.ReaderAt), offset, size)
 		}
 	}
 
 	// Update progress reader appropriately to the latest offset as we
 	// read from the source.
-	readSeeker := newHook(reader, progress)
+	readSeeker := newHook(reader, opts.Progress)
 
 	// This function does not calculate sha256 and md5sum for payload.
 	// Execute put object.
-	st, err := c.putObjectDo(bucketName, objectName, readSeeker, nil, nil, size, metaData)
+	st, err := c.putObjectDo(ctx, bucketName, objectName, readSeeker, "", "", size, opts)
 	if err != nil {
 		return 0, err
 	}
@@ -377,7 +371,7 @@ func (c Client) putObjectNoChecksum(bucketName, objectName string, reader io.Rea
 
 // putObjectDo - executes the put object http operation.
 // NOTE: You must have WRITE permissions on a bucket to add an object to it.
-func (c Client) putObjectDo(bucketName, objectName string, reader io.Reader, md5Sum []byte, sha256Sum []byte, size int64, metaData map[string][]string) (ObjectInfo, error) {
+func (c Client) putObjectDo(ctx context.Context, bucketName, objectName string, reader io.Reader, md5Base64, sha256Hex string, size int64, opts PutObjectOptions) (ObjectInfo, error) {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return ObjectInfo{}, err
@@ -385,35 +379,22 @@ func (c Client) putObjectDo(bucketName, objectName string, reader io.Reader, md5
 	if err := s3utils.CheckValidObjectName(objectName); err != nil {
 		return ObjectInfo{}, err
 	}
-
 	// Set headers.
-	customHeader := make(http.Header)
-
-	// Set metadata to headers
-	for k, v := range metaData {
-		if len(v) > 0 {
-			customHeader.Set(k, v[0])
-		}
-	}
-
-	// If Content-Type is not provided, set the default application/octet-stream one
-	if v, ok := metaData["Content-Type"]; !ok || len(v) == 0 {
-		customHeader.Set("Content-Type", "application/octet-stream")
-	}
+	customHeader := opts.Header()
 
 	// Populate request metadata.
 	reqMetadata := requestMetadata{
-		bucketName:         bucketName,
-		objectName:         objectName,
-		customHeader:       customHeader,
-		contentBody:        reader,
-		contentLength:      size,
-		contentMD5Bytes:    md5Sum,
-		contentSHA256Bytes: sha256Sum,
+		bucketName:       bucketName,
+		objectName:       objectName,
+		customHeader:     customHeader,
+		contentBody:      reader,
+		contentLength:    size,
+		contentMD5Base64: md5Base64,
+		contentSHA256Hex: sha256Hex,
 	}
 
 	// Execute PUT an objectName.
-	resp, err := c.executeMethod("PUT", reqMetadata)
+	resp, err := c.executeMethod(ctx, "PUT", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return ObjectInfo{}, err

vendor/github.com/minio/minio-go/api-put-object.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,119 +19,83 @@ package minio
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"io"
-	"os"
-	"reflect"
-	"runtime"
+	"net/http"
 	"runtime/debug"
 	"sort"
-	"strings"
 
+	"github.com/minio/minio-go/pkg/encrypt"
 	"github.com/minio/minio-go/pkg/s3utils"
 )
 
-// toInt - converts go value to its integer representation based
-// on the value kind if it is an integer.
-func toInt(value reflect.Value) (size int64) {
-	size = -1
-	if value.IsValid() {
-		switch value.Kind() {
-		case reflect.Int:
-			fallthrough
-		case reflect.Int8:
-			fallthrough
-		case reflect.Int16:
-			fallthrough
-		case reflect.Int32:
-			fallthrough
-		case reflect.Int64:
-			size = value.Int()
-		}
-	}
-	return size
+// PutObjectOptions represents options specified by user for PutObject call
+type PutObjectOptions struct {
+	UserMetadata       map[string]string
+	Progress           io.Reader
+	ContentType        string
+	ContentEncoding    string
+	ContentDisposition string
+	CacheControl       string
+	EncryptMaterials   encrypt.Materials
+	NumThreads         uint
 }
 
-// getReaderSize - Determine the size of Reader if available.
-func getReaderSize(reader io.Reader) (size int64, err error) {
-	size = -1
-	if reader == nil {
-		return -1, nil
-	}
-	// Verify if there is a method by name 'Size'.
-	sizeFn := reflect.ValueOf(reader).MethodByName("Size")
-	// Verify if there is a method by name 'Len'.
-	lenFn := reflect.ValueOf(reader).MethodByName("Len")
-	if sizeFn.IsValid() {
-		if sizeFn.Kind() == reflect.Func {
-			// Call the 'Size' function and save its return value.
-			result := sizeFn.Call([]reflect.Value{})
-			if len(result) == 1 {
-				size = toInt(result[0])
-			}
-		}
-	} else if lenFn.IsValid() {
-		if lenFn.Kind() == reflect.Func {
-			// Call the 'Len' function and save its return value.
-			result := lenFn.Call([]reflect.Value{})
-			if len(result) == 1 {
-				size = toInt(result[0])
-			}
-		}
+// getNumThreads - gets the number of threads to be used in the multipart
+// put object operation
+func (opts PutObjectOptions) getNumThreads() (numThreads int) {
+	if opts.NumThreads > 0 {
+		numThreads = int(opts.NumThreads)
 	} else {
-		// Fallback to Stat() method, two possible Stat() structs exist.
-		switch v := reader.(type) {
-		case *os.File:
-			var st os.FileInfo
-			st, err = v.Stat()
-			if err != nil {
-				// Handle this case specially for "windows",
-				// certain files for example 'Stdin', 'Stdout' and
-				// 'Stderr' it is not allowed to fetch file information.
-				if runtime.GOOS == "windows" {
-					if strings.Contains(err.Error(), "GetFileInformationByHandle") {
-						return -1, nil
-					}
-				}
-				return
-			}
-			// Ignore if input is a directory, throw an error.
-			if st.Mode().IsDir() {
-				return -1, ErrInvalidArgument("Input file cannot be a directory.")
-			}
-			// Ignore 'Stdin', 'Stdout' and 'Stderr', since they
-			// represent *os.File type but internally do not
-			// implement Seekable calls. Ignore them and treat
-			// them like a stream with unknown length.
-			switch st.Name() {
-			case "stdin", "stdout", "stderr":
-				return
-			// Ignore read/write stream of os.Pipe() which have unknown length too.
-			case "|0", "|1":
-				return
-			}
-			var pos int64
-			pos, err = v.Seek(0, 1) // SeekCurrent.
-			if err != nil {
-				return -1, err
-			}
-			size = st.Size() - pos
-		case *Object:
-			var st ObjectInfo
-			st, err = v.Stat()
-			if err != nil {
-				return
-			}
-			var pos int64
-			pos, err = v.Seek(0, 1) // SeekCurrent.
-			if err != nil {
-				return -1, err
-			}
-			size = st.Size - pos
+		numThreads = totalWorkers
+	}
+	return
+}
+
+// Header - constructs the headers from metadata entered by user in
+// PutObjectOptions struct
+func (opts PutObjectOptions) Header() (header http.Header) {
+	header = make(http.Header)
+
+	if opts.ContentType != "" {
+		header["Content-Type"] = []string{opts.ContentType}
+	} else {
+		header["Content-Type"] = []string{"application/octet-stream"}
+	}
+	if opts.ContentEncoding != "" {
+		header["Content-Encoding"] = []string{opts.ContentEncoding}
+	}
+	if opts.ContentDisposition != "" {
+		header["Content-Disposition"] = []string{opts.ContentDisposition}
+	}
+	if opts.CacheControl != "" {
+		header["Cache-Control"] = []string{opts.CacheControl}
+	}
+	if opts.EncryptMaterials != nil {
+		header[amzHeaderIV] = []string{opts.EncryptMaterials.GetIV()}
+		header[amzHeaderKey] = []string{opts.EncryptMaterials.GetKey()}
+		header[amzHeaderMatDesc] = []string{opts.EncryptMaterials.GetDesc()}
+	}
+	for k, v := range opts.UserMetadata {
+		if !isAmzHeader(k) && !isStandardHeader(k) && !isSSEHeader(k) {
+			header["X-Amz-Meta-"+k] = []string{v}
+		} else {
+			header[k] = []string{v}
 		}
 	}
-	// Returns the size here.
-	return size, err
+	return
+}
+
+// validate() checks if the UserMetadata map has standard headers or client side
+// encryption headers and raises an error if so.
+func (opts PutObjectOptions) validate() (err error) {
+	for k := range opts.UserMetadata {
+		if isStandardHeader(k) || isCSEHeader(k) {
+			return ErrInvalidArgument(k + " unsupported request parameter for user defined metadata")
+		}
+	}
+	return nil
 }
 
 // completedParts is a collection of parts sortable by their part numbers.
@@ -152,40 +117,12 @@ func (a completedParts) Less(i, j int) bool { return a[i].PartNumber < a[j].Part
 //  - For size input as -1 PutObject does a multipart Put operation
 //    until input stream reaches EOF. Maximum object size that can
 //    be uploaded through this operation will be 5TiB.
-func (c Client) PutObject(bucketName, objectName string, reader io.Reader, contentType string) (n int64, err error) {
-	return c.PutObjectWithMetadata(bucketName, objectName, reader, map[string][]string{
-		"Content-Type": []string{contentType},
-	}, nil)
+func (c Client) PutObject(bucketName, objectName string, reader io.Reader, objectSize int64,
+	opts PutObjectOptions) (n int64, err error) {
+	return c.PutObjectWithContext(context.Background(), bucketName, objectName, reader, objectSize, opts)
 }
 
-// PutObjectWithSize - is a helper PutObject similar in behavior to PutObject()
-// but takes the size argument explicitly, this function avoids doing reflection
-// internally to figure out the size of input stream. Also if the input size is
-// lesser than 0 this function returns an error.
-func (c Client) PutObjectWithSize(bucketName, objectName string, reader io.Reader, readerSize int64, metadata map[string][]string, progress io.Reader) (n int64, err error) {
-	return c.putObjectCommon(bucketName, objectName, reader, readerSize, metadata, progress)
-}
-
-// PutObjectWithMetadata using AWS streaming signature V4
-func (c Client) PutObjectWithMetadata(bucketName, objectName string, reader io.Reader, metadata map[string][]string, progress io.Reader) (n int64, err error) {
-	return c.PutObjectWithProgress(bucketName, objectName, reader, metadata, progress)
-}
-
-// PutObjectWithProgress using AWS streaming signature V4
-func (c Client) PutObjectWithProgress(bucketName, objectName string, reader io.Reader, metadata map[string][]string, progress io.Reader) (n int64, err error) {
-	// Size of the object.
-	var size int64
-
-	// Get reader size.
-	size, err = getReaderSize(reader)
-	if err != nil {
-		return 0, err
-	}
-
-	return c.putObjectCommon(bucketName, objectName, reader, size, metadata, progress)
-}
-
-func (c Client) putObjectCommon(bucketName, objectName string, reader io.Reader, size int64, metadata map[string][]string, progress io.Reader) (n int64, err error) {
+func (c Client) putObjectCommon(ctx context.Context, bucketName, objectName string, reader io.Reader, size int64, opts PutObjectOptions) (n int64, err error) {
 	// Check for largest object size allowed.
 	if size > int64(maxMultipartPutObjectSize) {
 		return 0, ErrEntityTooLarge(size, maxMultipartPutObjectSize, bucketName, objectName)
@@ -194,30 +131,27 @@ func (c Client) putObjectCommon(bucketName, objectName string, reader io.Reader,
 	// NOTE: Streaming signature is not supported by GCS.
 	if s3utils.IsGoogleEndpoint(c.endpointURL) {
 		// Do not compute MD5 for Google Cloud Storage.
-		return c.putObjectNoChecksum(bucketName, objectName, reader, size, metadata, progress)
+		return c.putObjectNoChecksum(ctx, bucketName, objectName, reader, size, opts)
 	}
 
 	if c.overrideSignerType.IsV2() {
 		if size >= 0 && size < minPartSize {
-			return c.putObjectNoChecksum(bucketName, objectName, reader, size, metadata, progress)
+			return c.putObjectNoChecksum(ctx, bucketName, objectName, reader, size, opts)
 		}
-		return c.putObjectMultipart(bucketName, objectName, reader, size, metadata, progress)
+		return c.putObjectMultipart(ctx, bucketName, objectName, reader, size, opts)
 	}
-
 	if size < 0 {
-		return c.putObjectMultipartStreamNoLength(bucketName, objectName, reader, metadata, progress)
+		return c.putObjectMultipartStreamNoLength(ctx, bucketName, objectName, reader, opts)
 	}
 
 	if size < minPartSize {
-		return c.putObjectNoChecksum(bucketName, objectName, reader, size, metadata, progress)
+		return c.putObjectNoChecksum(ctx, bucketName, objectName, reader, size, opts)
 	}
-
 	// For all sizes greater than 64MiB do multipart.
-	return c.putObjectMultipartStream(bucketName, objectName, reader, size, metadata, progress)
+	return c.putObjectMultipartStream(ctx, bucketName, objectName, reader, size, opts)
 }
 
-func (c Client) putObjectMultipartStreamNoLength(bucketName, objectName string, reader io.Reader, metadata map[string][]string,
-	progress io.Reader) (n int64, err error) {
+func (c Client) putObjectMultipartStreamNoLength(ctx context.Context, bucketName, objectName string, reader io.Reader, opts PutObjectOptions) (n int64, err error) {
 	// Input validation.
 	if err = s3utils.CheckValidBucketName(bucketName); err != nil {
 		return 0, err
@@ -238,16 +172,15 @@ func (c Client) putObjectMultipartStreamNoLength(bucketName, objectName string,
 	if err != nil {
 		return 0, err
 	}
-
 	// Initiate a new multipart upload.
-	uploadID, err := c.newUploadID(bucketName, objectName, metadata)
+	uploadID, err := c.newUploadID(ctx, bucketName, objectName, opts)
 	if err != nil {
 		return 0, err
 	}
 
 	defer func() {
 		if err != nil {
-			c.abortMultipartUpload(bucketName, objectName, uploadID)
+			c.abortMultipartUpload(ctx, bucketName, objectName, uploadID)
 		}
 	}()
 
@@ -263,21 +196,20 @@ func (c Client) putObjectMultipartStreamNoLength(bucketName, objectName string,
 
 	for partNumber <= totalPartsCount {
 		length, rErr := io.ReadFull(reader, buf)
-		if rErr == io.EOF {
+		if rErr == io.EOF && partNumber > 1 {
 			break
 		}
 		if rErr != nil && rErr != io.ErrUnexpectedEOF {
 			return 0, rErr
 		}
-
 		// Update progress reader appropriately to the latest offset
 		// as we read from the source.
-		rd := newHook(bytes.NewReader(buf[:length]), progress)
+		rd := newHook(bytes.NewReader(buf[:length]), opts.Progress)
 
 		// Proceed to upload the part.
 		var objPart ObjectPart
-		objPart, err = c.uploadPart(bucketName, objectName, uploadID, rd, partNumber,
-			nil, nil, int64(length), metadata)
+		objPart, err = c.uploadPart(ctx, bucketName, objectName, uploadID, rd, partNumber,
+			"", "", int64(length), opts.UserMetadata)
 		if err != nil {
 			return totalUploadedSize, err
 		}
@@ -313,7 +245,7 @@ func (c Client) putObjectMultipartStreamNoLength(bucketName, objectName string,
 
 	// Sort all completed parts.
 	sort.Sort(completedParts(complMultipartUpload.Parts))
-	if _, err = c.completeMultipartUpload(bucketName, objectName, uploadID, complMultipartUpload); err != nil {
+	if _, err = c.completeMultipartUpload(ctx, bucketName, objectName, uploadID, complMultipartUpload); err != nil {
 		return totalUploadedSize, err
 	}
 

vendor/github.com/minio/minio-go/api-put-object_test.go

@@ -0,0 +1,53 @@
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package minio
+
+import (
+	"testing"
+)
+
+func TestPutObjectOptionsValidate(t *testing.T) {
+	testCases := []struct {
+		metadata   map[string]string
+		shouldPass bool
+	}{
+		{map[string]string{"Content-Type": "custom/content-type"}, false},
+		{map[string]string{"content-type": "custom/content-type"}, false},
+		{map[string]string{"Content-Encoding": "gzip"}, false},
+		{map[string]string{"Cache-Control": "blah"}, false},
+		{map[string]string{"Content-Disposition": "something"}, false},
+		{map[string]string{"my-custom-header": "blah"}, true},
+		{map[string]string{"X-Amz-Iv": "blah"}, false},
+		{map[string]string{"X-Amz-Key": "blah"}, false},
+		{map[string]string{"X-Amz-Key-prefixed-header": "blah"}, false},
+		{map[string]string{"custom-X-Amz-Key-middle": "blah"}, true},
+		{map[string]string{"my-custom-header-X-Amz-Key": "blah"}, true},
+		{map[string]string{"X-Amz-Matdesc": "blah"}, false},
+		{map[string]string{"blah-X-Amz-Matdesc": "blah"}, true},
+		{map[string]string{"X-Amz-MatDesc-suffix": "blah"}, true},
+		{map[string]string{"x-amz-meta-X-Amz-Iv": "blah"}, false},
+		{map[string]string{"x-amz-meta-X-Amz-Key": "blah"}, false},
+		{map[string]string{"x-amz-meta-X-Amz-Matdesc": "blah"}, false},
+	}
+	for i, testCase := range testCases {
+		err := PutObjectOptions{UserMetadata: testCase.metadata}.validate()
+
+		if testCase.shouldPass && err != nil {
+			t.Errorf("Test %d - output did not match with reference results", i+1)
+		}
+	}
+}

vendor/github.com/minio/minio-go/api-remove.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,6 +19,7 @@ package minio
 
 import (
 	"bytes"
+	"context"
 	"encoding/xml"
 	"io"
 	"net/http"
@@ -36,9 +38,9 @@ func (c Client) RemoveBucket(bucketName string) error {
 		return err
 	}
 	// Execute DELETE on bucket.
-	resp, err := c.executeMethod("DELETE", requestMetadata{
-		bucketName:         bucketName,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(context.Background(), "DELETE", requestMetadata{
+		bucketName:       bucketName,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 	defer closeResponse(resp)
 	if err != nil {
@@ -66,10 +68,10 @@ func (c Client) RemoveObject(bucketName, objectName string) error {
 		return err
 	}
 	// Execute DELETE on objectName.
-	resp, err := c.executeMethod("DELETE", requestMetadata{
-		bucketName:         bucketName,
-		objectName:         objectName,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(context.Background(), "DELETE", requestMetadata{
+		bucketName:       bucketName,
+		objectName:       objectName,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 	defer closeResponse(resp)
 	if err != nil {
@@ -187,13 +189,13 @@ func (c Client) RemoveObjects(bucketName string, objectsCh <-chan string) <-chan
 			// Generate remove multi objects XML request
 			removeBytes := generateRemoveMultiObjectsRequest(batch)
 			// Execute GET on bucket to list objects.
-			resp, err := c.executeMethod("POST", requestMetadata{
-				bucketName:         bucketName,
-				queryValues:        urlValues,
-				contentBody:        bytes.NewReader(removeBytes),
-				contentLength:      int64(len(removeBytes)),
-				contentMD5Bytes:    sumMD5(removeBytes),
-				contentSHA256Bytes: sum256(removeBytes),
+			resp, err := c.executeMethod(context.Background(), "POST", requestMetadata{
+				bucketName:       bucketName,
+				queryValues:      urlValues,
+				contentBody:      bytes.NewReader(removeBytes),
+				contentLength:    int64(len(removeBytes)),
+				contentMD5Base64: sumMD5Base64(removeBytes),
+				contentSHA256Hex: sum256Hex(removeBytes),
 			})
 			if err != nil {
 				for _, b := range batch {
@@ -227,7 +229,7 @@ func (c Client) RemoveIncompleteUpload(bucketName, objectName string) error {
 	}
 	if uploadID != "" {
 		// Upload id found, abort the incomplete multipart upload.
-		err := c.abortMultipartUpload(bucketName, objectName, uploadID)
+		err := c.abortMultipartUpload(context.Background(), bucketName, objectName, uploadID)
 		if err != nil {
 			return err
 		}
@@ -237,7 +239,7 @@ func (c Client) RemoveIncompleteUpload(bucketName, objectName string) error {
 
 // abortMultipartUpload aborts a multipart upload for the given
 // uploadID, all previously uploaded parts are deleted.
-func (c Client) abortMultipartUpload(bucketName, objectName, uploadID string) error {
+func (c Client) abortMultipartUpload(ctx context.Context, bucketName, objectName, uploadID string) error {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return err
@@ -251,11 +253,11 @@ func (c Client) abortMultipartUpload(bucketName, objectName, uploadID string) er
 	urlValues.Set("uploadId", uploadID)
 
 	// Execute DELETE on multipart upload.
-	resp, err := c.executeMethod("DELETE", requestMetadata{
-		bucketName:         bucketName,
-		objectName:         objectName,
-		queryValues:        urlValues,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(ctx, "DELETE", requestMetadata{
+		bucketName:       bucketName,
+		objectName:       objectName,
+		queryValues:      urlValues,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 	defer closeResponse(resp)
 	if err != nil {

vendor/github.com/minio/minio-go/api-s3-datatypes.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -128,7 +129,7 @@ type initiator struct {
 // copyObjectResult container for copy object response.
 type copyObjectResult struct {
 	ETag         string
-	LastModified string // time string format "2006-01-02T15:04:05.000Z"
+	LastModified time.Time // time string format "2006-01-02T15:04:05.000Z"
 }
 
 // ObjectPart container for particular part of an object.

vendor/github.com/minio/minio-go/api-stat.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,6 +18,7 @@
 package minio
 
 import (
+	"context"
 	"net/http"
 	"strconv"
 	"strings"
@@ -33,9 +35,9 @@ func (c Client) BucketExists(bucketName string) (bool, error) {
 	}
 
 	// Execute HEAD on bucketName.
-	resp, err := c.executeMethod("HEAD", requestMetadata{
-		bucketName:         bucketName,
-		contentSHA256Bytes: emptySHA256,
+	resp, err := c.executeMethod(context.Background(), "HEAD", requestMetadata{
+		bucketName:       bucketName,
+		contentSHA256Hex: emptySHA256Hex,
 	})
 	defer closeResponse(resp)
 	if err != nil {
@@ -80,7 +82,7 @@ func extractObjMetadata(header http.Header) http.Header {
 }
 
 // StatObject verifies if object exists and you have permission to access.
-func (c Client) StatObject(bucketName, objectName string) (ObjectInfo, error) {
+func (c Client) StatObject(bucketName, objectName string, opts StatObjectOptions) (ObjectInfo, error) {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return ObjectInfo{}, err
@@ -88,12 +90,11 @@ func (c Client) StatObject(bucketName, objectName string) (ObjectInfo, error) {
 	if err := s3utils.CheckValidObjectName(objectName); err != nil {
 		return ObjectInfo{}, err
 	}
-	reqHeaders := NewHeadReqHeaders()
-	return c.statObject(bucketName, objectName, reqHeaders)
+	return c.statObject(bucketName, objectName, opts)
 }
 
 // Lower level API for statObject supporting pre-conditions and range headers.
-func (c Client) statObject(bucketName, objectName string, reqHeaders RequestHeaders) (ObjectInfo, error) {
+func (c Client) statObject(bucketName, objectName string, opts StatObjectOptions) (ObjectInfo, error) {
 	// Input validation.
 	if err := s3utils.CheckValidBucketName(bucketName); err != nil {
 		return ObjectInfo{}, err
@@ -102,17 +103,12 @@ func (c Client) statObject(bucketName, objectName string, reqHeaders RequestHead
 		return ObjectInfo{}, err
 	}
 
-	customHeader := make(http.Header)
-	for k, v := range reqHeaders.Header {
-		customHeader[k] = v
-	}
-
 	// Execute HEAD on objectName.
-	resp, err := c.executeMethod("HEAD", requestMetadata{
-		bucketName:         bucketName,
-		objectName:         objectName,
-		contentSHA256Bytes: emptySHA256,
-		customHeader:       customHeader,
+	resp, err := c.executeMethod(context.Background(), "HEAD", requestMetadata{
+		bucketName:       bucketName,
+		objectName:       objectName,
+		contentSHA256Hex: emptySHA256Hex,
+		customHeader:     opts.Header(),
 	})
 	defer closeResponse(resp)
 	if err != nil {

vendor/github.com/minio/minio-go/api.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2015, 2016, 2017 Minio, Inc.
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,10 +19,9 @@ package minio
 
 import (
 	"bytes"
+	"context"
 	"crypto/md5"
 	"crypto/sha256"
-	"encoding/base64"
-	"encoding/hex"
 	"errors"
 	"fmt"
 	"hash"
@@ -87,7 +86,7 @@ type Client struct {
 // Global constants.
 const (
 	libraryName    = "minio-go"
-	libraryVersion = "3.0.3"
+	libraryVersion = "4.0.3"
 )
 
 // User Agent should always following the below style.
@@ -178,18 +177,6 @@ func (r *lockedRandSource) Seed(seed int64) {
 	r.lk.Unlock()
 }
 
-// redirectHeaders copies all headers when following a redirect URL.
-// This won't be needed anymore from go 1.8 (https://github.com/golang/go/issues/4800)
-func redirectHeaders(req *http.Request, via []*http.Request) error {
-	if len(via) == 0 {
-		return nil
-	}
-	for key, val := range via[0].Header {
-		req.Header[key] = val
-	}
-	return nil
-}
-
 // getRegionFromURL - parse region from URL if present.
 func getRegionFromURL(u url.URL) (region string) {
 	region = ""
@@ -236,8 +223,7 @@ func privateNew(endpoint string, creds *credentials.Credentials, secure bool, re
 
 	// Instantiate http client and bucket location cache.
 	clnt.httpClient = &http.Client{
-		Transport:     defaultMinioTransport,
-		CheckRedirect: redirectHeaders,
+		Transport: defaultMinioTransport,
 	}
 
 	// Sets custom region, if region is empty bucket location cache is used automatically.
@@ -356,11 +342,11 @@ type requestMetadata struct {
 	expires      int64
 
 	// Generated by our internal code.
-	bucketLocation     string
-	contentBody        io.Reader
-	contentLength      int64
-	contentSHA256Bytes []byte
-	contentMD5Bytes    []byte
+	bucketLocation   string
+	contentBody      io.Reader
+	contentLength    int64
+	contentMD5Base64 string // carries base64 encoded md5sum
+	contentSHA256Hex string // carries hex encoded sha256sum
 }
 
 // dumpHTTP - dump HTTP request and response.
@@ -494,9 +480,11 @@ var successStatus = []int{
 // executeMethod - instantiates a given method, and retries the
 // request upon any error up to maxRetries attempts in a binomially
 // delayed manner using a standard back off algorithm.
-func (c Client) executeMethod(method string, metadata requestMetadata) (res *http.Response, err error) {
+func (c Client) executeMethod(ctx context.Context, method string, metadata requestMetadata) (res *http.Response, err error) {
 	var isRetryable bool     // Indicates if request can be retried.
 	var bodySeeker io.Seeker // Extracted seeker from io.Reader.
+	var reqRetry = MaxRetry  // Indicates how many times we can retry the request
+
 	if metadata.contentBody != nil {
 		// Check if body is seekable then it is retryable.
 		bodySeeker, isRetryable = metadata.contentBody.(io.Seeker)
@@ -504,6 +492,11 @@ func (c Client) executeMethod(method string, metadata requestMetadata) (res *htt
 		case os.Stdin, os.Stdout, os.Stderr:
 			isRetryable = false
 		}
+		// Retry only when reader is seekable
+		if !isRetryable {
+			reqRetry = 1
+		}
+
 		// Figure out if the body can be closed - if yes
 		// we will definitely close it upon the function
 		// return.
@@ -522,7 +515,7 @@ func (c Client) executeMethod(method string, metadata requestMetadata) (res *htt
 	// Blank indentifier is kept here on purpose since 'range' without
 	// blank identifiers is only supported since go1.4
 	// https://golang.org/doc/go1.4#forrange.
-	for range c.newRetryTimer(MaxRetry, DefaultRetryUnit, DefaultRetryCap, MaxJitter, doneCh) {
+	for range c.newRetryTimer(reqRetry, DefaultRetryUnit, DefaultRetryCap, MaxJitter, doneCh) {
 		// Retry executes the following function body if request has an
 		// error until maxRetries have been exhausted, retry attempts are
 		// performed after waiting for a given period of time in a
@@ -545,6 +538,8 @@ func (c Client) executeMethod(method string, metadata requestMetadata) (res *htt
 			}
 			return nil, err
 		}
+		// Add context to request
+		req = req.WithContext(ctx)
 
 		// Initiate the request.
 		res, err = c.do(req)
@@ -720,8 +715,8 @@ func (c Client) newRequest(method string, metadata requestMetadata) (req *http.R
 	}
 
 	// set md5Sum for content protection.
-	if metadata.contentMD5Bytes != nil {
-		req.Header.Set("Content-Md5", base64.StdEncoding.EncodeToString(metadata.contentMD5Bytes))
+	if len(metadata.contentMD5Base64) > 0 {
+		req.Header.Set("Content-Md5", metadata.contentMD5Base64)
 	}
 
 	// For anonymous requests just return.
@@ -742,8 +737,8 @@ func (c Client) newRequest(method string, metadata requestMetadata) (req *http.R
 	default:
 		// Set sha256 sum for signature calculation only with signature version '4'.
 		shaHeader := unsignedPayload
-		if len(metadata.contentSHA256Bytes) > 0 {
-			shaHeader = hex.EncodeToString(metadata.contentSHA256Bytes)
+		if metadata.contentSHA256Hex != "" {
+			shaHeader = metadata.contentSHA256Hex
 		}
 		req.Header.Set("X-Amz-Content-Sha256", shaHeader)
 

vendor/github.com/minio/minio-go/api_unit_test.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2015, 2016, 2017 Minio, Inc.
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,13 +18,8 @@
 package minio
 
 import (
-	"bytes"
-	"io"
-	"io/ioutil"
 	"net/http"
 	"net/url"
-	"os"
-	"strings"
 	"testing"
 
 	"github.com/minio/minio-go/pkg/credentials"
@@ -41,129 +36,6 @@ func (c *customReader) Size() (n int64) {
 	return 10
 }
 
-// Tests getReaderSize() for various Reader types.
-func TestGetReaderSize(t *testing.T) {
-	var reader io.Reader
-	size, err := getReaderSize(reader)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if size != -1 {
-		t.Fatal("Reader shouldn't have any length.")
-	}
-
-	bytesReader := bytes.NewReader([]byte("Hello World"))
-	size, err = getReaderSize(bytesReader)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if size != int64(len("Hello World")) {
-		t.Fatalf("Reader length doesn't match got: %v, want: %v", size, len("Hello World"))
-	}
-
-	size, err = getReaderSize(new(customReader))
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if size != int64(10) {
-		t.Fatalf("Reader length doesn't match got: %v, want: %v", size, 10)
-	}
-
-	stringsReader := strings.NewReader("Hello World")
-	size, err = getReaderSize(stringsReader)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if size != int64(len("Hello World")) {
-		t.Fatalf("Reader length doesn't match got: %v, want: %v", size, len("Hello World"))
-	}
-
-	// Create request channel.
-	reqCh := make(chan getRequest, 1)
-	// Create response channel.
-	resCh := make(chan getResponse, 1)
-	// Create done channel.
-	doneCh := make(chan struct{})
-
-	objectInfo := ObjectInfo{Size: 10}
-	// Create the first request.
-	firstReq := getRequest{
-		isReadOp:   false, // Perform only a HEAD object to get objectInfo.
-		isFirstReq: true,
-	}
-	// Create the expected response.
-	firstRes := getResponse{
-		objectInfo: objectInfo,
-	}
-	// Send the expected response.
-	resCh <- firstRes
-
-	// Test setting size on the first request.
-	objectReaderFirstReq := newObject(reqCh, resCh, doneCh)
-	defer objectReaderFirstReq.Close()
-	// Not checking the response here...just that the reader size is correct.
-	_, err = objectReaderFirstReq.doGetRequest(firstReq)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Validate that the reader size is the objectInfo size.
-	size, err = getReaderSize(objectReaderFirstReq)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if size != int64(10) {
-		t.Fatalf("Reader length doesn't match got: %d, wanted %d", size, objectInfo.Size)
-	}
-
-	fileReader, err := ioutil.TempFile(os.TempDir(), "prefix")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	defer fileReader.Close()
-	defer os.RemoveAll(fileReader.Name())
-
-	size, err = getReaderSize(fileReader)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if size == -1 {
-		t.Fatal("Reader length for file cannot be -1.")
-	}
-
-	// Verify for standard input, output and error file descriptors.
-	size, err = getReaderSize(os.Stdin)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if size != -1 {
-		t.Fatal("Stdin should have length of -1.")
-	}
-	size, err = getReaderSize(os.Stdout)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if size != -1 {
-		t.Fatal("Stdout should have length of -1.")
-	}
-	size, err = getReaderSize(os.Stderr)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if size != -1 {
-		t.Fatal("Stderr should have length of -1.")
-	}
-	file, err := os.Open(os.TempDir())
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	defer file.Close()
-	_, err = getReaderSize(file)
-	if err == nil {
-		t.Fatal("Input file as directory should throw an error.")
-	}
-}
-
 // Tests get region from host URL.
 func TestGetRegionFromURL(t *testing.T) {
 	testCases := []struct {
@@ -352,7 +224,7 @@ func TestMakeTargetURL(t *testing.T) {
 		// Test 6
 		{"localhost:9000", false, "mybucket", "myobject", "", nil, url.URL{Host: "localhost:9000", Scheme: "http", Path: "/mybucket/myobject"}, nil},
 		// Test 7, testing with query
-		{"localhost:9000", false, "mybucket", "myobject", "", map[string][]string{"param": []string{"val"}}, url.URL{Host: "localhost:9000", Scheme: "http", Path: "/mybucket/myobject", RawQuery: "param=val"}, nil},
+		{"localhost:9000", false, "mybucket", "myobject", "", map[string][]string{"param": {"val"}}, url.URL{Host: "localhost:9000", Scheme: "http", Path: "/mybucket/myobject", RawQuery: "param=val"}, nil},
 		// Test 8, testing with port 80
 		{"localhost:80", false, "mybucket", "myobject", "", nil, url.URL{Host: "localhost", Scheme: "http", Path: "/mybucket/myobject"}, nil},
 		// Test 9, testing with port 443

vendor/github.com/minio/minio-go/bucket-cache.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2015, 2016, 2017 Minio, Inc.
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,7 +18,6 @@
 package minio
 
 import (
-	"encoding/hex"
 	"net/http"
 	"net/url"
 	"path"
@@ -209,11 +208,9 @@ func (c Client) getBucketLocationRequest(bucketName string) (*http.Request, erro
 	}
 
 	// Set sha256 sum for signature calculation only with signature version '4'.
-	var contentSha256 string
+	contentSha256 := emptySHA256Hex
 	if c.secure {
 		contentSha256 = unsignedPayload
-	} else {
-		contentSha256 = hex.EncodeToString(sum256([]byte{}))
 	}
 
 	req.Header.Set("X-Amz-Content-Sha256", contentSha256)

vendor/github.com/minio/minio-go/bucket-cache_test.go

@@ -1,6 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2015, 2016, 2017 Minio, Inc.
+ * Copyright
+ *  2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,7 +19,6 @@ package minio
 
 import (
 	"bytes"
-	"encoding/hex"
 	"encoding/xml"
 	"io/ioutil"
 	"net/http"
@@ -116,11 +115,9 @@ func TestGetBucketLocationRequest(t *testing.T) {
 		// with signature version '4'.
 		switch {
 		case signerType.IsV4():
-			var contentSha256 string
+			contentSha256 := emptySHA256Hex
 			if c.secure {
 				contentSha256 = unsignedPayload
-			} else {
-				contentSha256 = hex.EncodeToString(sum256([]byte{}))
 			}
 			req.Header.Set("X-Amz-Content-Sha256", contentSha256)
 			req = s3signer.SignV4(*req, accessKeyID, secretAccessKey, sessionToken, "us-east-1")

vendor/github.com/minio/minio-go/bucket-notification.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/constants.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -50,7 +51,7 @@ const maxMultipartPutObjectSize = 1024 * 1024 * 1024 * 1024 * 5
 const unsignedPayload = "UNSIGNED-PAYLOAD"
 
 // Total number of parallel workers used for multipart operation.
-var totalWorkers = 3
+const totalWorkers = 4
 
 // Signature related constants.
 const (

vendor/github.com/minio/minio-go/core.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2017 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,7 +18,9 @@
 package minio
 
 import (
+	"context"
 	"io"
+	"strings"
 
 	"github.com/minio/minio-go/pkg/policy"
 )
@@ -52,14 +55,35 @@ func (c Core) ListObjectsV2(bucketName, objectPrefix, continuationToken string,
 	return c.listObjectsV2Query(bucketName, objectPrefix, continuationToken, fetchOwner, delimiter, maxkeys)
 }
 
-// PutObject - Upload object. Uploads using single PUT call.
-func (c Core) PutObject(bucket, object string, size int64, data io.Reader, md5Sum, sha256Sum []byte, metadata map[string][]string) (ObjectInfo, error) {
-	return c.putObjectDo(bucket, object, data, md5Sum, sha256Sum, size, metadata)
+// CopyObject - copies an object from source object to destination object on server side.
+func (c Core) CopyObject(sourceBucket, sourceObject, destBucket, destObject string, metadata map[string]string) (ObjectInfo, error) {
+	return c.copyObjectDo(context.Background(), sourceBucket, sourceObject, destBucket, destObject, metadata)
 }
 
-// NewMultipartUpload - Initiates new multipart upload and returns the new uploaID.
-func (c Core) NewMultipartUpload(bucket, object string, metadata map[string][]string) (uploadID string, err error) {
-	result, err := c.initiateMultipartUpload(bucket, object, metadata)
+// PutObject - Upload object. Uploads using single PUT call.
+func (c Core) PutObject(bucket, object string, data io.Reader, size int64, md5Base64, sha256Hex string, metadata map[string]string) (ObjectInfo, error) {
+	opts := PutObjectOptions{}
+	m := make(map[string]string)
+	for k, v := range metadata {
+		if strings.ToLower(k) == "content-encoding" {
+			opts.ContentEncoding = v
+		} else if strings.ToLower(k) == "content-disposition" {
+			opts.ContentDisposition = v
+		} else if strings.ToLower(k) == "content-type" {
+			opts.ContentType = v
+		} else if strings.ToLower(k) == "cache-control" {
+			opts.CacheControl = v
+		} else {
+			m[k] = metadata[k]
+		}
+	}
+	opts.UserMetadata = m
+	return c.putObjectDo(context.Background(), bucket, object, data, md5Base64, sha256Hex, size, opts)
+}
+
+// NewMultipartUpload - Initiates new multipart upload and returns the new uploadID.
+func (c Core) NewMultipartUpload(bucket, object string, opts PutObjectOptions) (uploadID string, err error) {
+	result, err := c.initiateMultipartUpload(context.Background(), bucket, object, opts)
 	return result.UploadID, err
 }
 
@@ -69,14 +93,14 @@ func (c Core) ListMultipartUploads(bucket, prefix, keyMarker, uploadIDMarker, de
 }
 
 // PutObjectPart - Upload an object part.
-func (c Core) PutObjectPart(bucket, object, uploadID string, partID int, size int64, data io.Reader, md5Sum, sha256Sum []byte) (ObjectPart, error) {
-	return c.PutObjectPartWithMetadata(bucket, object, uploadID, partID, size, data, md5Sum, sha256Sum, nil)
+func (c Core) PutObjectPart(bucket, object, uploadID string, partID int, data io.Reader, size int64, md5Base64, sha256Hex string) (ObjectPart, error) {
+	return c.PutObjectPartWithMetadata(bucket, object, uploadID, partID, data, size, md5Base64, sha256Hex, nil)
 }
 
 // PutObjectPartWithMetadata - upload an object part with additional request metadata.
-func (c Core) PutObjectPartWithMetadata(bucket, object, uploadID string, partID int,
-	size int64, data io.Reader, md5Sum, sha256Sum []byte, metadata map[string][]string) (ObjectPart, error) {
-	return c.uploadPart(bucket, object, uploadID, data, partID, md5Sum, sha256Sum, size, metadata)
+func (c Core) PutObjectPartWithMetadata(bucket, object, uploadID string, partID int, data io.Reader,
+	size int64, md5Base64, sha256Hex string, metadata map[string]string) (ObjectPart, error) {
+	return c.uploadPart(context.Background(), bucket, object, uploadID, data, partID, md5Base64, sha256Hex, size, metadata)
 }
 
 // ListObjectParts - List uploaded parts of an incomplete upload.x
@@ -86,7 +110,7 @@ func (c Core) ListObjectParts(bucket, object, uploadID string, partNumberMarker
 
 // CompleteMultipartUpload - Concatenate uploaded parts and commit to an object.
 func (c Core) CompleteMultipartUpload(bucket, object, uploadID string, parts []CompletePart) error {
-	_, err := c.completeMultipartUpload(bucket, object, uploadID, completeMultipartUpload{
+	_, err := c.completeMultipartUpload(context.Background(), bucket, object, uploadID, completeMultipartUpload{
 		Parts: parts,
 	})
 	return err
@@ -94,7 +118,7 @@ func (c Core) CompleteMultipartUpload(bucket, object, uploadID string, parts []C
 
 // AbortMultipartUpload - Abort an incomplete upload.
 func (c Core) AbortMultipartUpload(bucket, object, uploadID string) error {
-	return c.abortMultipartUpload(bucket, object, uploadID)
+	return c.abortMultipartUpload(context.Background(), bucket, object, uploadID)
 }
 
 // GetBucketPolicy - fetches bucket access policy for a given bucket.
@@ -110,12 +134,12 @@ func (c Core) PutBucketPolicy(bucket string, bucketPolicy policy.BucketAccessPol
 // GetObject is a lower level API implemented to support reading
 // partial objects and also downloading objects with special conditions
 // matching etag, modtime etc.
-func (c Core) GetObject(bucketName, objectName string, reqHeaders RequestHeaders) (io.ReadCloser, ObjectInfo, error) {
-	return c.getObject(bucketName, objectName, reqHeaders)
+func (c Core) GetObject(bucketName, objectName string, opts GetObjectOptions) (io.ReadCloser, ObjectInfo, error) {
+	return c.getObject(context.Background(), bucketName, objectName, opts)
 }
 
 // StatObject is a lower level API implemented to support special
 // conditions matching etag, modtime on a request.
-func (c Core) StatObject(bucketName, objectName string, reqHeaders RequestHeaders) (ObjectInfo, error) {
-	return c.statObject(bucketName, objectName, reqHeaders)
+func (c Core) StatObject(bucketName, objectName string, opts StatObjectOptions) (ObjectInfo, error) {
+	return c.statObject(bucketName, objectName, opts)
 }

vendor/github.com/minio/minio-go/core_test.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2017 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,7 +26,6 @@ import (
 	"testing"
 	"time"
 
-	"crypto/md5"
 	"math/rand"
 )
 
@@ -103,7 +103,9 @@ func TestGetObjectCore(t *testing.T) {
 
 	// Save the data
 	objectName := randString(60, rand.NewSource(time.Now().UnixNano()), "")
-	n, err := c.Client.PutObject(bucketName, objectName, bytes.NewReader(buf), "binary/octet-stream")
+	n, err := c.Client.PutObject(bucketName, objectName, bytes.NewReader(buf), int64(len(buf)), PutObjectOptions{
+		ContentType: "binary/octet-stream",
+	})
 	if err != nil {
 		t.Fatal("Error:", err, bucketName, objectName)
 	}
@@ -112,8 +114,6 @@ func TestGetObjectCore(t *testing.T) {
 		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
 	}
 
-	reqHeaders := NewGetReqHeaders()
-
 	offset := int64(2048)
 
 	// read directly
@@ -122,8 +122,9 @@ func TestGetObjectCore(t *testing.T) {
 	buf3 := make([]byte, n)
 	buf4 := make([]byte, 1)
 
-	reqHeaders.SetRange(offset, offset+int64(len(buf1))-1)
-	reader, objectInfo, err := c.GetObject(bucketName, objectName, reqHeaders)
+	opts := GetObjectOptions{}
+	opts.SetRange(offset, offset+int64(len(buf1))-1)
+	reader, objectInfo, err := c.GetObject(bucketName, objectName, opts)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -141,8 +142,8 @@ func TestGetObjectCore(t *testing.T) {
 	}
 	offset += 512
 
-	reqHeaders.SetRange(offset, offset+int64(len(buf2))-1)
-	reader, objectInfo, err = c.GetObject(bucketName, objectName, reqHeaders)
+	opts.SetRange(offset, offset+int64(len(buf2))-1)
+	reader, objectInfo, err = c.GetObject(bucketName, objectName, opts)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -160,8 +161,8 @@ func TestGetObjectCore(t *testing.T) {
 		t.Fatal("Error: Incorrect read between two GetObject from same offset.")
 	}
 
-	reqHeaders.SetRange(0, int64(len(buf3)))
-	reader, objectInfo, err = c.GetObject(bucketName, objectName, reqHeaders)
+	opts.SetRange(0, int64(len(buf3)))
+	reader, objectInfo, err = c.GetObject(bucketName, objectName, opts)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -180,9 +181,9 @@ func TestGetObjectCore(t *testing.T) {
 		t.Fatal("Error: Incorrect data read in GetObject, than what was previously upoaded.")
 	}
 
-	reqHeaders = NewGetReqHeaders()
-	reqHeaders.SetMatchETag("etag")
-	_, _, err = c.GetObject(bucketName, objectName, reqHeaders)
+	opts = GetObjectOptions{}
+	opts.SetMatchETag("etag")
+	_, _, err = c.GetObject(bucketName, objectName, opts)
 	if err == nil {
 		t.Fatal("Unexpected GetObject should fail with mismatching etags")
 	}
@@ -190,9 +191,9 @@ func TestGetObjectCore(t *testing.T) {
 		t.Fatalf("Expected \"PreconditionFailed\" as code, got %s instead", errResp.Code)
 	}
 
-	reqHeaders = NewGetReqHeaders()
-	reqHeaders.SetMatchETagExcept("etag")
-	reader, objectInfo, err = c.GetObject(bucketName, objectName, reqHeaders)
+	opts = GetObjectOptions{}
+	opts.SetMatchETagExcept("etag")
+	reader, objectInfo, err = c.GetObject(bucketName, objectName, opts)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -210,9 +211,9 @@ func TestGetObjectCore(t *testing.T) {
 		t.Fatal("Error: Incorrect data read in GetObject, than what was previously upoaded.")
 	}
 
-	reqHeaders = NewGetReqHeaders()
-	reqHeaders.SetRange(0, 0)
-	reader, objectInfo, err = c.GetObject(bucketName, objectName, reqHeaders)
+	opts = GetObjectOptions{}
+	opts.SetRange(0, 0)
+	reader, objectInfo, err = c.GetObject(bucketName, objectName, opts)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -275,12 +276,12 @@ func TestGetObjectContentEncoding(t *testing.T) {
 
 	// Generate data more than 32K
 	buf := bytes.Repeat([]byte("3"), rand.Intn(1<<20)+32*1024)
-	m := make(map[string][]string)
-	m["Content-Encoding"] = []string{"gzip"}
 
 	// Save the data
 	objectName := randString(60, rand.NewSource(time.Now().UnixNano()), "")
-	n, err := c.Client.PutObjectWithMetadata(bucketName, objectName, bytes.NewReader(buf), m, nil)
+	n, err := c.Client.PutObject(bucketName, objectName, bytes.NewReader(buf), int64(len(buf)), PutObjectOptions{
+		ContentEncoding: "gzip",
+	})
 	if err != nil {
 		t.Fatal("Error:", err, bucketName, objectName)
 	}
@@ -289,8 +290,7 @@ func TestGetObjectContentEncoding(t *testing.T) {
 		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
 	}
 
-	reqHeaders := NewGetReqHeaders()
-	rwc, objInfo, err := c.GetObject(bucketName, objectName, reqHeaders)
+	rwc, objInfo, err := c.GetObject(bucketName, objectName, GetObjectOptions{})
 	if err != nil {
 		t.Fatalf("Error: %v", err)
 	}
@@ -370,6 +370,120 @@ func TestGetBucketPolicy(t *testing.T) {
 	}
 }
 
+// Tests Core CopyObject API implementation.
+func TestCoreCopyObject(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping functional tests for short runs")
+	}
+
+	// Seed random based on current time.
+	rand.Seed(time.Now().Unix())
+
+	// Instantiate new minio client object.
+	c, err := NewCore(
+		os.Getenv(serverEndpoint),
+		os.Getenv(accessKey),
+		os.Getenv(secretKey),
+		mustParseBool(os.Getenv(enableSecurity)),
+	)
+	if err != nil {
+		t.Fatal("Error:", err)
+	}
+
+	// Enable tracing, write to stderr.
+	// c.TraceOn(os.Stderr)
+
+	// Set user agent.
+	c.SetAppInfo("Minio-go-FunctionalTest", "0.1.0")
+
+	// Generate a new random bucket name.
+	bucketName := randString(60, rand.NewSource(time.Now().UnixNano()), "minio-go-test")
+
+	// Make a new bucket.
+	err = c.MakeBucket(bucketName, "us-east-1")
+	if err != nil {
+		t.Fatal("Error:", err, bucketName)
+	}
+
+	buf := bytes.Repeat([]byte("a"), 32*1024)
+
+	// Save the data
+	objectName := randString(60, rand.NewSource(time.Now().UnixNano()), "")
+	objInfo, err := c.PutObject(bucketName, objectName, bytes.NewReader(buf), int64(len(buf)), "", "", map[string]string{
+		"Content-Type": "binary/octet-stream",
+	})
+	if err != nil {
+		t.Fatal("Error:", err, bucketName, objectName)
+	}
+
+	if objInfo.Size != int64(len(buf)) {
+		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), objInfo.Size)
+	}
+
+	destBucketName := bucketName
+	destObjectName := objectName + "-dest"
+
+	cobjInfo, err := c.CopyObject(bucketName, objectName, destBucketName, destObjectName, map[string]string{
+		"X-Amz-Metadata-Directive": "REPLACE",
+		"Content-Type":             "application/javascript",
+	})
+	if err != nil {
+		t.Fatal("Error:", err, bucketName, objectName, destBucketName, destObjectName)
+	}
+	if cobjInfo.ETag != objInfo.ETag {
+		t.Fatalf("Error: expected etag to be same as source object %s, but found different etag :%s", objInfo.ETag, cobjInfo.ETag)
+	}
+
+	// Attempt to read from destBucketName and object name.
+	r, err := c.Client.GetObject(destBucketName, destObjectName, GetObjectOptions{})
+	if err != nil {
+		t.Fatal("Error:", err, bucketName, objectName)
+	}
+
+	st, err := r.Stat()
+	if err != nil {
+		t.Fatal("Error:", err, bucketName, objectName)
+	}
+
+	if st.Size != int64(len(buf)) {
+		t.Fatalf("Error: number of bytes in stat does not match, want %v, got %v\n",
+			len(buf), st.Size)
+	}
+
+	if st.ContentType != "application/javascript" {
+		t.Fatalf("Error: Content types don't match, expected: application/javascript, found: %+v\n", st.ContentType)
+	}
+
+	if st.ETag != objInfo.ETag {
+		t.Fatalf("Error: expected etag to be same as source object %s, but found different etag :%s", objInfo.ETag, st.ETag)
+	}
+
+	if err := r.Close(); err != nil {
+		t.Fatal("Error:", err)
+	}
+
+	if err := r.Close(); err == nil {
+		t.Fatal("Error: object is already closed, should return error")
+	}
+
+	err = c.RemoveObject(bucketName, objectName)
+	if err != nil {
+		t.Fatal("Error: ", err)
+	}
+
+	err = c.RemoveObject(destBucketName, destObjectName)
+	if err != nil {
+		t.Fatal("Error: ", err)
+	}
+
+	err = c.RemoveBucket(bucketName)
+	if err != nil {
+		t.Fatal("Error:", err)
+	}
+
+	// Do not need to remove destBucketName its same as bucketName.
+}
+
 // Test Core PutObject.
 func TestCorePutObject(t *testing.T) {
 	if testing.Short() {
@@ -405,21 +519,21 @@ func TestCorePutObject(t *testing.T) {
 		t.Fatal("Error:", err, bucketName)
 	}
 
-	buf := bytes.Repeat([]byte("a"), minPartSize)
+	buf := bytes.Repeat([]byte("a"), 32*1024)
 
 	// Save the data
 	objectName := randString(60, rand.NewSource(time.Now().UnixNano()), "")
 	// Object content type
 	objectContentType := "binary/octet-stream"
-	metadata := make(map[string][]string)
-	metadata["Content-Type"] = []string{objectContentType}
+	metadata := make(map[string]string)
+	metadata["Content-Type"] = objectContentType
 
-	objInfo, err := c.PutObject(bucketName, objectName, int64(len(buf)), bytes.NewReader(buf), md5.New().Sum(nil), nil, metadata)
+	objInfo, err := c.PutObject(bucketName, objectName, bytes.NewReader(buf), int64(len(buf)), "1B2M2Y8AsgTpgAmY7PhCfg==", "", metadata)
 	if err == nil {
-		t.Fatal("Error expected: nil, got: ", err)
+		t.Fatal("Error expected: error, got: nil(success)")
 	}
 
-	objInfo, err = c.PutObject(bucketName, objectName, int64(len(buf)), bytes.NewReader(buf), nil, nil, metadata)
+	objInfo, err = c.PutObject(bucketName, objectName, bytes.NewReader(buf), int64(len(buf)), "", "", metadata)
 	if err != nil {
 		t.Fatal("Error:", err, bucketName, objectName)
 	}
@@ -429,7 +543,7 @@ func TestCorePutObject(t *testing.T) {
 	}
 
 	// Read the data back
-	r, err := c.Client.GetObject(bucketName, objectName)
+	r, err := c.Client.GetObject(bucketName, objectName, GetObjectOptions{})
 	if err != nil {
 		t.Fatal("Error:", err, bucketName, objectName)
 	}
@@ -490,18 +604,17 @@ func TestCoreGetObjectMetadata(t *testing.T) {
 		t.Fatal("Error:", err, bucketName)
 	}
 
-	metadata := map[string][]string{
-		"X-Amz-Meta-Key-1": {"Val-1"},
+	metadata := map[string]string{
+		"X-Amz-Meta-Key-1": "Val-1",
 	}
 
-	_, err = core.PutObject(bucketName, "my-objectname", 5,
-		bytes.NewReader([]byte("hello")), nil, nil, metadata)
+	_, err = core.PutObject(bucketName, "my-objectname",
+		bytes.NewReader([]byte("hello")), 5, "", "", metadata)
 	if err != nil {
 		log.Fatalln(err)
 	}
 
-	reader, objInfo, err := core.GetObject(bucketName, "my-objectname",
-		RequestHeaders{})
+	reader, objInfo, err := core.GetObject(bucketName, "my-objectname", GetObjectOptions{})
 	if err != nil {
 		log.Fatalln(err)
 	}

vendor/github.com/minio/minio-go/docs/checker.go.template

@@ -0,0 +1,21 @@
+package main
+
+import (
+    "fmt"
+
+    "github.com/minio/minio-go"
+)
+
+func main() {
+        // Use a secure connection.
+        ssl := true
+
+        // Initialize minio client object.
+        minioClient, err := minio.New("play.minio.io:9000", "Q3AM3UQ867SPQQA43P2F", "zuf+tfteSlswRu7BJ86wekitnifILbZam1KYY3TG", ssl)
+        if err != nil {
+                fmt.Println(err)
+                return
+        }
+
+        {{.Text}}
+}

vendor/github.com/minio/minio-go/docs/validator.go

@@ -0,0 +1,227 @@
+// +build ignore
+
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"text/template"
+
+	"github.com/a8m/mark"
+	"github.com/gernest/wow"
+	"github.com/gernest/wow/spin"
+	"github.com/minio/cli"
+)
+
+func init() {
+	// Validate go binary.
+	if _, err := exec.LookPath("go"); err != nil {
+		panic(err)
+	}
+}
+
+var globalFlags = []cli.Flag{
+	cli.StringFlag{
+		Name:  "m",
+		Value: "API.md",
+		Usage: "Path to markdown api documentation.",
+	},
+	cli.StringFlag{
+		Name:  "t",
+		Value: "checker.go.template",
+		Usage: "Template used for generating the programs.",
+	},
+	cli.IntFlag{
+		Name:  "skip",
+		Value: 2,
+		Usage: "Skip entries before validating the code.",
+	},
+}
+
+func runGofmt(path string) (msg string, err error) {
+	cmdArgs := []string{"-s", "-w", "-l", path}
+	cmd := exec.Command("gofmt", cmdArgs...)
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return "", err
+	}
+	return string(stdoutStderr), nil
+}
+
+func runGoImports(path string) (msg string, err error) {
+	cmdArgs := []string{"-w", path}
+	cmd := exec.Command("goimports", cmdArgs...)
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return string(stdoutStderr), err
+	}
+	return string(stdoutStderr), nil
+}
+
+func runGoBuild(path string) (msg string, err error) {
+	// Go build the path.
+	cmdArgs := []string{"build", "-o", "/dev/null", path}
+	cmd := exec.Command("go", cmdArgs...)
+	stdoutStderr, err := cmd.CombinedOutput()
+	if err != nil {
+		return string(stdoutStderr), err
+	}
+	return string(stdoutStderr), nil
+}
+
+func validatorAction(ctx *cli.Context) error {
+	if !ctx.IsSet("m") || !ctx.IsSet("t") {
+		return nil
+	}
+	docPath := ctx.String("m")
+	var err error
+	docPath, err = filepath.Abs(docPath)
+	if err != nil {
+		return err
+	}
+	data, err := ioutil.ReadFile(docPath)
+	if err != nil {
+		return err
+	}
+
+	templatePath := ctx.String("t")
+	templatePath, err = filepath.Abs(templatePath)
+	if err != nil {
+		return err
+	}
+
+	skipEntries := ctx.Int("skip")
+	m := mark.New(string(data), &mark.Options{
+		Gfm: true, // Github markdown support is enabled by default.
+	})
+
+	t, err := template.ParseFiles(templatePath)
+	if err != nil {
+		return err
+	}
+
+	tmpDir, err := ioutil.TempDir("", "md-verifier")
+	if err != nil {
+		return err
+	}
+	defer os.RemoveAll(tmpDir)
+
+	entryN := 1
+	for i := mark.NodeText; i < mark.NodeCheckbox; i++ {
+		if mark.NodeCode != mark.NodeType(i) {
+			m.AddRenderFn(mark.NodeType(i), func(node mark.Node) (s string) {
+				return ""
+			})
+			continue
+		}
+		m.AddRenderFn(mark.NodeCode, func(node mark.Node) (s string) {
+			p, ok := node.(*mark.CodeNode)
+			if !ok {
+				return
+			}
+			p.Text = strings.NewReplacer("&lt;", "<", "&gt;", ">", "&quot;", `"`, "&amp;", "&").Replace(p.Text)
+			if skipEntries > 0 {
+				skipEntries--
+				return
+			}
+
+			testFilePath := filepath.Join(tmpDir, "example.go")
+			w, werr := os.Create(testFilePath)
+			if werr != nil {
+				panic(werr)
+			}
+			t.Execute(w, p)
+			w.Sync()
+			w.Close()
+			entryN++
+
+			msg, err := runGofmt(testFilePath)
+			if err != nil {
+				fmt.Printf("Failed running gofmt on %s, with (%s):(%s)\n", testFilePath, msg, err)
+				os.Exit(-1)
+			}
+
+			msg, err = runGoImports(testFilePath)
+			if err != nil {
+				fmt.Printf("Failed running gofmt on %s, with (%s):(%s)\n", testFilePath, msg, err)
+				os.Exit(-1)
+			}
+
+			msg, err = runGoBuild(testFilePath)
+			if err != nil {
+				fmt.Printf("Failed running gobuild on %s, with (%s):(%s)\n", testFilePath, msg, err)
+				fmt.Printf("Code with possible issue in %s:\n%s", docPath, p.Text)
+				fmt.Printf("To test `go build %s`\n", testFilePath)
+				os.Exit(-1)
+			}
+
+			// Once successfully built remove the test file
+			os.Remove(testFilePath)
+			return
+		})
+	}
+
+	w := wow.New(os.Stdout, spin.Get(spin.Moon), fmt.Sprintf(" Running validation tests in %s", tmpDir))
+
+	w.Start()
+	// Render markdown executes our checker on each code blocks.
+	_ = m.Render()
+	w.PersistWith(spin.Get(spin.Runner), " Successfully finished tests")
+	w.Stop()
+
+	return nil
+}
+
+func main() {
+	app := cli.NewApp()
+	app.Action = validatorAction
+	app.HideVersion = true
+	app.HideHelpCommand = true
+	app.Usage = "Validates code block sections inside API.md"
+	app.Author = "Minio.io"
+	app.Flags = globalFlags
+	// Help template for validator
+	app.CustomAppHelpTemplate = `NAME:
+  {{.Name}} - {{.Usage}}
+
+USAGE:
+  {{.Name}} {{if .VisibleFlags}}[FLAGS] {{end}}COMMAND{{if .VisibleFlags}} [COMMAND FLAGS | -h]{{end}} [ARGUMENTS...]
+
+COMMANDS:
+  {{range .VisibleCommands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}}
+  {{end}}{{if .VisibleFlags}}
+FLAGS:
+  {{range .VisibleFlags}}{{.}}
+  {{end}}{{end}}
+TEMPLATE:
+  Validator uses Go's 'text/template' formatting so you need to ensure 
+  your template is formatted correctly, check 'docs/checker.go.template'
+
+USAGE:
+  go run docs/validator.go -m docs/API.md -t /tmp/mycode.go.template
+
+`
+	app.Run(os.Args)
+
+}

vendor/github.com/minio/minio-go/examples/minio/listenbucketnotification.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/bucketexists.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/composeobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/copyobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/fgetobject-context.go

@@ -0,0 +1,54 @@
+// +build ignore
+
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"log"
+	"time"
+
+	"context"
+
+	"github.com/minio/minio-go"
+)
+
+func main() {
+	// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname, my-objectname
+	// and my-filename.csv are dummy values, please replace them with original values.
+
+	// Requests are always secure (HTTPS) by default. Set secure=false to enable insecure (HTTP) access.
+	// This boolean value is the last argument for New().
+
+	// New returns an Amazon S3 compatible client object. API compatibility (v2 or v4) is automatically
+	// determined based on the Endpoint value.
+
+	s3Client, err := minio.New("s3.amazonaws.com", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", true)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
+	defer cancel()
+
+	if err := s3Client.FGetObjectWithContext(ctx, "my-bucketname", "my-objectname", "my-filename.csv", minio.GetObjectOptions{}); err != nil {
+		log.Fatalln(err)
+	}
+	log.Println("Successfully saved my-filename.csv")
+
+}

vendor/github.com/minio/minio-go/examples/s3/fgetobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -38,7 +39,7 @@ func main() {
 		log.Fatalln(err)
 	}
 
-	if err := s3Client.FGetObject("my-bucketname", "my-objectname", "my-filename.csv"); err != nil {
+	if err := s3Client.FGetObject("my-bucketname", "my-objectname", "my-filename.csv", minio.GetObjectOptions{}); err != nil {
 		log.Fatalln(err)
 	}
 	log.Println("Successfully saved my-filename.csv")

vendor/github.com/minio/minio-go/examples/s3/fputencrypted-object.go

@@ -0,0 +1,80 @@
+// +build ignore
+
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"log"
+
+	"github.com/minio/minio-go"
+	"github.com/minio/minio-go/pkg/encrypt"
+)
+
+func main() {
+	// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-testfile, my-bucketname and
+	// my-objectname are dummy values, please replace them with original values.
+
+	// Requests are always secure (HTTPS) by default. Set secure=false to enable insecure (HTTP) access.
+	// This boolean value is the last argument for New().
+
+	// New returns an Amazon S3 compatible client object. API compatibility (v2 or v4) is automatically
+	// determined based on the Endpoint value.
+	s3Client, err := minio.New("s3.amazonaws.com", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", true)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	// Specify a local file that we will upload
+	filePath := "my-testfile"
+
+	//// Build an asymmetric key from private and public files
+	//
+	// privateKey, err := ioutil.ReadFile("private.key")
+	// if err != nil {
+	//	t.Fatal(err)
+	// }
+	//
+	// publicKey, err := ioutil.ReadFile("public.key")
+	// if err != nil {
+	//	t.Fatal(err)
+	// }
+	//
+	// asymmetricKey, err := NewAsymmetricKey(privateKey, publicKey)
+	// if err != nil {
+	//	t.Fatal(err)
+	// }
+	////
+
+	// Build a symmetric key
+	symmetricKey := encrypt.NewSymmetricKey([]byte("my-secret-key-00"))
+
+	// Build encryption materials which will encrypt uploaded data
+	cbcMaterials, err := encrypt.NewCBCSecureMaterials(symmetricKey)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	// Encrypt file content and upload to the server
+	n, err := s3Client.FPutEncryptedObject("my-bucketname", "my-objectname", filePath, cbcMaterials)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	log.Println("Uploaded", "my-objectname", " of size: ", n, "Successfully.")
+}

vendor/github.com/minio/minio-go/examples/s3/fputobject-context.go

@@ -0,0 +1,53 @@
+// +build ignore
+
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"log"
+	"time"
+
+	"context"
+
+	"github.com/minio/minio-go"
+)
+
+func main() {
+	// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname, my-objectname
+	// and my-filename.csv are dummy values, please replace them with original values.
+
+	// Requests are always secure (HTTPS) by default. Set secure=false to enable insecure (HTTP) access.
+	// This boolean value is the last argument for New().
+
+	// New returns an Amazon S3 compatible client object. API compatibility (v2 or v4) is automatically
+	// determined based on the Endpoint value.
+
+	s3Client, err := minio.New("s3.amazonaws.com", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", true)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
+	defer cancel()
+
+	if _, err := s3Client.FPutObjectWithContext(ctx, "my-bucketname", "my-objectname", "my-filename.csv", minio.PutObjectOptions{ContentType: "application/csv"}); err != nil {
+		log.Fatalln(err)
+	}
+	log.Println("Successfully uploaded my-filename.csv")
+}

vendor/github.com/minio/minio-go/examples/s3/fputobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -38,7 +39,9 @@ func main() {
 		log.Fatalln(err)
 	}
 
-	if _, err := s3Client.FPutObject("my-bucketname", "my-objectname", "my-filename.csv", "application/csv"); err != nil {
+	if _, err := s3Client.FPutObject("my-bucketname", "my-objectname", "my-filename.csv", minio.PutObjectOptions{
+		ContentType: "application/csv",
+	}); err != nil {
 		log.Fatalln(err)
 	}
 	log.Println("Successfully uploaded my-filename.csv")

vendor/github.com/minio/minio-go/examples/s3/get-encrypted-object.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/getbucketnotification.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/getbucketpolicy.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/getobject-context.go

@@ -0,0 +1,73 @@
+// +build ignore
+
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"io"
+	"log"
+	"os"
+	"time"
+
+	"context"
+
+	"github.com/minio/minio-go"
+)
+
+func main() {
+	// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-bucketname, my-objectname and
+	// my-testfile are dummy values, please replace them with original values.
+
+	// Requests are always secure (HTTPS) by default. Set secure=false to enable insecure (HTTP) access.
+	// This boolean value is the last argument for New().
+
+	// New returns an Amazon S3 compatible client object. API compatibility (v2 or v4) is automatically
+	// determined based on the Endpoint value.
+
+	s3Client, err := minio.New("s3.amazonaws.com", "YOUR-ACCESS-KEY-HERE", "YOUR-SECRET-KEY-HERE", true)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
+	defer cancel()
+
+	opts := minio.GetObjectOptions{}
+	opts.SetModified(time.Now().Round(10 * time.Minute)) // get object if was modified within the last 10 minutes
+	reader, err := s3Client.GetObjectWithContext(ctx, "my-bucketname", "my-objectname", opts)
+	if err != nil {
+		log.Fatalln(err)
+	}
+	defer reader.Close()
+
+	localFile, err := os.Create("my-testfile")
+	if err != nil {
+		log.Fatalln(err)
+	}
+	defer localFile.Close()
+
+	stat, err := reader.Stat()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	if _, err := io.CopyN(localFile, reader, stat.Size); err != nil {
+		log.Fatalln(err)
+	}
+}

vendor/github.com/minio/minio-go/examples/s3/getobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -40,7 +41,7 @@ func main() {
 		log.Fatalln(err)
 	}
 
-	reader, err := s3Client.GetObject("my-bucketname", "my-objectname")
+	reader, err := s3Client.GetObject("my-bucketname", "my-objectname", minio.GetObjectOptions{})
 	if err != nil {
 		log.Fatalln(err)
 	}

vendor/github.com/minio/minio-go/examples/s3/listbucketpolicies.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/listbuckets.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/listincompleteuploads.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/listobjects-N.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/listobjects.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/listobjectsV2.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/makebucket.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/presignedgetobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/presignedheadobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/presignedpostpolicy.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/presignedputobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/put-encrypted-object.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -75,7 +76,7 @@ func main() {
 	}
 
 	// Encrypt file content and upload to the server
-	n, err := s3Client.PutEncryptedObject("my-bucketname", "my-objectname", file, cbcMaterials, nil, nil)
+	n, err := s3Client.PutEncryptedObject("my-bucketname", "my-objectname", file, cbcMaterials)
 	if err != nil {
 		log.Fatalln(err)
 	}

vendor/github.com/minio/minio-go/examples/s3/putobject-context.go

@@ -0,0 +1,68 @@
+// +build ignore
+
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"log"
+	"os"
+	"time"
+
+	"context"
+
+	"github.com/minio/minio-go"
+)
+
+func main() {
+	// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY, my-testfile, my-bucketname and
+	// my-objectname are dummy values, please replace them with original values.
+
+	// Requests are always secure (HTTPS) by default. Set secure=false to enable insecure (HTTP) access.
+	// This boolean value is the last argument for New().
+
+	// New returns an Amazon S3 compatible client object. API compatibility (v2 or v4) is automatically
+	// determined based on the Endpoint value.
+
+	s3Client, err := minio.New("s3.amazonaws.com", "YOUR-ACCESSKEYID", "YOUR-SECRETACCESSKEY", true)
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Minute)
+	defer cancel()
+
+	object, err := os.Open("my-testfile")
+	if err != nil {
+		log.Fatalln(err)
+	}
+	defer object.Close()
+
+	objectStat, err := object.Stat()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	n, err := s3Client.PutObjectWithContext(ctx, "my-bucketname", "my-objectname", object, objectStat.Size(), minio.PutObjectOptions{
+		ContentType: "application/octet-stream",
+	})
+	if err != nil {
+		log.Fatalln(err)
+	}
+	log.Println("Uploaded", "my-objectname", " of size: ", n, "Successfully.")
+}

vendor/github.com/minio/minio-go/examples/s3/putobject-getobject-sse.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2017 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,7 +25,6 @@ import (
 	"encoding/base64"
 	"io/ioutil"
 	"log"
-	"net/http"
 
 	minio "github.com/minio/minio-go"
 )
@@ -54,24 +54,24 @@ func main() {
 	// of the encryption key or to decrypt the contents of the
 	// encrypted object. That means, if you lose the encryption
 	// key, you lose the object.
-	var metadata = map[string][]string{
-		"x-amz-server-side-encryption-customer-algorithm": []string{"AES256"},
-		"x-amz-server-side-encryption-customer-key":       []string{encryptionKey},
-		"x-amz-server-side-encryption-customer-key-MD5":   []string{encryptionKeyMD5},
+	var metadata = map[string]string{
+		"x-amz-server-side-encryption-customer-algorithm": "AES256",
+		"x-amz-server-side-encryption-customer-key":       encryptionKey,
+		"x-amz-server-side-encryption-customer-key-MD5":   encryptionKeyMD5,
 	}
 
 	// minioClient.TraceOn(os.Stderr) // Enable to debug.
-	_, err = minioClient.PutObjectWithMetadata("mybucket", "my-encrypted-object.txt", content, metadata, nil)
+	_, err = minioClient.PutObject("mybucket", "my-encrypted-object.txt", content, 11, minio.PutObjectOptions{UserMetadata: metadata})
 	if err != nil {
 		log.Fatalln(err)
 	}
 
-	var reqHeaders = minio.RequestHeaders{Header: http.Header{}}
+	opts := minio.GetObjectOptions{}
 	for k, v := range metadata {
-		reqHeaders.Set(k, v[0])
+		opts.Set(k, v)
 	}
 	coreClient := minio.Core{minioClient}
-	reader, _, err := coreClient.GetObject("mybucket", "my-encrypted-object.txt", reqHeaders)
+	reader, _, err := coreClient.GetObject("mybucket", "my-encrypted-object.txt", opts)
 	if err != nil {
 		log.Fatalln(err)
 	}

vendor/github.com/minio/minio-go/examples/s3/putobject-progress.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -39,7 +40,7 @@ func main() {
 		log.Fatalln(err)
 	}
 
-	reader, err := s3Client.GetObject("my-bucketname", "my-objectname")
+	reader, err := s3Client.GetObject("my-bucketname", "my-objectname", minio.GetObjectOptions{})
 	if err != nil {
 		log.Fatalln(err)
 	}
@@ -54,10 +55,8 @@ func main() {
 	// the Reads inside.
 	progress := pb.New64(objectInfo.Size)
 	progress.Start()
+	n, err := s3Client.PutObject("my-bucketname", "my-objectname-progress", reader, objectInfo.Size, minio.PutObjectOptions{ContentType: "application/octet-stream", Progress: progress})
 
-	n, err := s3Client.PutObjectWithProgress("my-bucketname", "my-objectname-progress", reader, map[string][]string{
-		"Content-Type": []string{"application/octet-stream"},
-	}, progress)
 	if err != nil {
 		log.Fatalln(err)
 	}

vendor/github.com/minio/minio-go/examples/s3/putobject-s3-accelerate.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -48,7 +49,12 @@ func main() {
 	}
 	defer object.Close()
 
-	n, err := s3Client.PutObject("my-bucketname", "my-objectname", object, "application/octet-stream")
+	objectStat, err := object.Stat()
+	if err != nil {
+		log.Fatalln(err)
+	}
+
+	n, err := s3Client.PutObject("my-bucketname", "my-objectname", object, objectStat.Size(), minio.PutObjectOptions{ContentType: "application/octet-stream"})
 	if err != nil {
 		log.Fatalln(err)
 	}

vendor/github.com/minio/minio-go/examples/s3/putobject-streaming.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -45,7 +46,7 @@ func main() {
 	}
 	defer object.Close()
 
-	n, err := s3Client.PutObjectStreaming("my-bucketname", "my-objectname", object)
+	n, err := s3Client.PutObject("my-bucketname", "my-objectname", object, -1, minio.PutObjectOptions{})
 	if err != nil {
 		log.Fatalln(err)
 	}

vendor/github.com/minio/minio-go/examples/s3/putobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -44,8 +45,12 @@ func main() {
 		log.Fatalln(err)
 	}
 	defer object.Close()
+	objectStat, err := object.Stat()
+	if err != nil {
+		log.Fatalln(err)
+	}
 
-	n, err := s3Client.PutObject("my-bucketname", "my-objectname", object, "application/octet-stream")
+	n, err := s3Client.PutObject("my-bucketname", "my-objectname", object, objectStat.Size(), minio.PutObjectOptions{ContentType: "application/octet-stream"})
 	if err != nil {
 		log.Fatalln(err)
 	}

vendor/github.com/minio/minio-go/examples/s3/removeallbucketnotification.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/removebucket.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/removeincompleteupload.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/removeobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/removeobjects.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -20,7 +21,6 @@ package main
 
 import (
 	"log"
-	"strconv"
 
 	"github.com/minio/minio-go"
 )
@@ -44,8 +44,12 @@ func main() {
 	// Send object names that are needed to be removed to objectsCh
 	go func() {
 		defer close(objectsCh)
-		for i := 0; i < 10; i++ {
-			objectsCh <- "/path/to/my-objectname" + strconv.Itoa(i)
+		// List all objects from a bucket-name with a matching prefix.
+		for object := range s3Client.ListObjects("my-bucketname", "my-prefixname", true, doneCh) {
+			if object.Err != nil {
+				log.Fatalln(object.Err)
+			}
+			objectsCh <- object.Key
 		}
 	}()
 

vendor/github.com/minio/minio-go/examples/s3/setbucketnotification.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/setbucketpolicy.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/examples/s3/statobject.go

@@ -1,7 +1,8 @@
 // +build ignore
 
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +38,7 @@ func main() {
 	if err != nil {
 		log.Fatalln(err)
 	}
-	stat, err := s3Client.StatObject("my-bucketname", "my-objectname")
+	stat, err := s3Client.StatObject("my-bucketname", "my-objectname", minio.StatObjectOptions{})
 	if err != nil {
 		log.Fatalln(err)
 	}

vendor/github.com/minio/minio-go/get-options_test.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2017 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -40,17 +41,17 @@ func TestSetHeader(t *testing.T) {
 		{1, -5, fmt.Errorf("Invalid range specified: start=1 end=-5"), ""},
 	}
 	for i, testCase := range testCases {
-		rh := NewGetReqHeaders()
-		err := rh.SetRange(testCase.start, testCase.end)
+		opts := GetObjectOptions{}
+		err := opts.SetRange(testCase.start, testCase.end)
 		if err == nil && testCase.errVal != nil {
 			t.Errorf("Test %d: Expected to fail with '%v' but it passed",
 				i+1, testCase.errVal)
 		} else if err != nil && testCase.errVal.Error() != err.Error() {
 			t.Errorf("Test %d: Expected error '%v' but got error '%v'",
 				i+1, testCase.errVal, err)
-		} else if err == nil && rh.Get("Range") != testCase.expected {
+		} else if err == nil && opts.headers["Range"] != testCase.expected {
 			t.Errorf("Test %d: Expected range header '%s', but got '%s'",
-				i+1, testCase.expected, rh.Get("Range"))
+				i+1, testCase.expected, opts.headers["Range"])
 		}
 	}
 }

vendor/github.com/minio/minio-go/hook-reader.go

@@ -1,5 +1,6 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2015-2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/pkg/credentials/chain.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2017 Minio, Inc.
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/pkg/credentials/chain_test.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2017 Minio, Inc.
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/pkg/credentials/credentials.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2017 Minio, Inc.
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/pkg/credentials/credentials_test.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2017 Minio, Inc.
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/pkg/credentials/doc.go

@@ -1,3 +1,20 @@
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage
+ * Copyright 2017 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 // Package credentials provides credential retrieval and management
 // for S3 compatible object storage.
 //

vendor/github.com/minio/minio-go/pkg/credentials/env_aws.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2017 Minio, Inc.
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/pkg/credentials/env_minio.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2017 Minio, Inc.
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/pkg/credentials/env_test.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2017 Minio, Inc.
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/pkg/credentials/file_aws_credentials.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2017 Minio, Inc.
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.

vendor/github.com/minio/minio-go/pkg/credentials/file_minio_client.go

@@ -1,6 +1,6 @@
 /*
  * Minio Go Library for Amazon S3 Compatible Cloud Storage
- * (C) 2017 Minio, Inc.
+ * Copyright 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.