From e781959d5bbdf6a14346ed0a0bcfe1631df00e26 Mon Sep 17 00:00:00 2001
From: Harshavardhana <harsha@harshavardhana.net>
Date: Thu, 10 Mar 2016 14:22:28 -0800
Subject: [PATCH] vendor: Add minio-go vendor updates.

---
 routers.go                                    |    2 +-
 .../github.com/minio/minio-go/CONTRIBUTING.md |    4 +-
 .../minio/minio-go/api-error-response.go      |   77 +-
 vendor/github.com/minio/minio-go/api-get.go   |   50 +-
 vendor/github.com/minio/minio-go/api-list.go  |   37 +-
 .../minio/minio-go/api-presigned.go           |    2 +-
 .../minio/minio-go/api-put-bucket.go          |   13 +-
 .../minio/minio-go/api-put-object-file.go     |    4 +-
 .../minio-go/api-put-object-multipart.go      |   46 +-
 .../minio/minio-go/api-put-object-progress.go |    2 +-
 .../minio/minio-go/api-put-object-readat.go   |    7 +-
 .../minio/minio-go/api-put-object.go          |   39 +-
 .../github.com/minio/minio-go/api-remove.go   |   44 +-
 vendor/github.com/minio/minio-go/api-stat.go  |   50 +-
 vendor/github.com/minio/minio-go/api.go       |  172 ++-
 .../minio/minio-go/api_functional_v2_test.go  | 1073 ----------------
 .../minio/minio-go/api_functional_v4_test.go  | 1101 -----------------
 .../minio/minio-go/api_unit_test.go           |  599 ---------
 .../github.com/minio/minio-go/bucket-cache.go |   19 +-
 .../github.com/minio/minio-go/hook-reader.go  |   20 +-
 vendor/github.com/minio/minio-go/retry.go     |   95 ++
 vendor/vendor.json                            |    4 +-
 22 files changed, 392 insertions(+), 3068 deletions(-)
 delete mode 100644 vendor/github.com/minio/minio-go/api_functional_v2_test.go
 delete mode 100644 vendor/github.com/minio/minio-go/api_functional_v4_test.go
 delete mode 100644 vendor/github.com/minio/minio-go/api_unit_test.go
 create mode 100644 vendor/github.com/minio/minio-go/retry.go

diff --git a/routers.go b/routers.go
index 78023bb42..a36b5995c 100644
--- a/routers.go
+++ b/routers.go
@@ -52,7 +52,7 @@ type webAPI struct {
 	// Once true log all incoming request.
 	AccessLog bool
 	// Minio client instance.
-	Client minio.CloudStorageClient
+	Client *minio.Client
 
 	// private params.
 	apiAddress string // api destination address.
diff --git a/vendor/github.com/minio/minio-go/CONTRIBUTING.md b/vendor/github.com/minio/minio-go/CONTRIBUTING.md
index 3a938e856..8b1ee86c6 100644
--- a/vendor/github.com/minio/minio-go/CONTRIBUTING.md
+++ b/vendor/github.com/minio/minio-go/CONTRIBUTING.md
@@ -14,7 +14,9 @@
     - Have test cases for the new code. If you have questions about how to do it, please ask in your pull request.
     - Run `go fmt`
     - Squash your commits into a single commit. `git rebase -i`. It's okay to force update your pull request.
-    - Make sure `go test -short -race ./...` and `go build` completes.
+    - Make sure `go test -race ./...` and `go build` completes.
+      NOTE: go test runs functional tests and requires you to have a AWS S3 account. Set them as environment variables
+      ``ACCESS_KEY`` and ``SECRET_KEY``. To run shorter version of the tests please use ``go test -short -race ./...``
 
 * Read [Effective Go](https://github.com/golang/go/wiki/CodeReviewComments) article from Golang project
     - `minio-go` project is strictly conformant with Golang style
diff --git a/vendor/github.com/minio/minio-go/api-error-response.go b/vendor/github.com/minio/minio-go/api-error-response.go
index 647165112..e6789aff5 100644
--- a/vendor/github.com/minio/minio-go/api-error-response.go
+++ b/vendor/github.com/minio/minio-go/api-error-response.go
@@ -47,7 +47,7 @@ type ErrorResponse struct {
 
 	// Region where the bucket is located. This header is returned
 	// only in HEAD bucket and ListObjects response.
-	AmzBucketRegion string
+	Region string
 }
 
 // ToErrorResponse - Returns parsed ErrorResponse struct from body and
@@ -98,65 +98,54 @@ func httpRespToErrorResponse(resp *http.Response, bucketName, objectName string)
 		case http.StatusNotFound:
 			if objectName == "" {
 				errResp = ErrorResponse{
-					Code:            "NoSuchBucket",
-					Message:         "The specified bucket does not exist.",
-					BucketName:      bucketName,
-					RequestID:       resp.Header.Get("x-amz-request-id"),
-					HostID:          resp.Header.Get("x-amz-id-2"),
-					AmzBucketRegion: resp.Header.Get("x-amz-bucket-region"),
+					Code:       "NoSuchBucket",
+					Message:    "The specified bucket does not exist.",
+					BucketName: bucketName,
+					RequestID:  resp.Header.Get("x-amz-request-id"),
+					HostID:     resp.Header.Get("x-amz-id-2"),
+					Region:     resp.Header.Get("x-amz-bucket-region"),
 				}
 			} else {
 				errResp = ErrorResponse{
-					Code:            "NoSuchKey",
-					Message:         "The specified key does not exist.",
-					BucketName:      bucketName,
-					Key:             objectName,
-					RequestID:       resp.Header.Get("x-amz-request-id"),
-					HostID:          resp.Header.Get("x-amz-id-2"),
-					AmzBucketRegion: resp.Header.Get("x-amz-bucket-region"),
+					Code:       "NoSuchKey",
+					Message:    "The specified key does not exist.",
+					BucketName: bucketName,
+					Key:        objectName,
+					RequestID:  resp.Header.Get("x-amz-request-id"),
+					HostID:     resp.Header.Get("x-amz-id-2"),
+					Region:     resp.Header.Get("x-amz-bucket-region"),
 				}
 			}
 		case http.StatusForbidden:
 			errResp = ErrorResponse{
-				Code:            "AccessDenied",
-				Message:         "Access Denied.",
-				BucketName:      bucketName,
-				Key:             objectName,
-				RequestID:       resp.Header.Get("x-amz-request-id"),
-				HostID:          resp.Header.Get("x-amz-id-2"),
-				AmzBucketRegion: resp.Header.Get("x-amz-bucket-region"),
+				Code:       "AccessDenied",
+				Message:    "Access Denied.",
+				BucketName: bucketName,
+				Key:        objectName,
+				RequestID:  resp.Header.Get("x-amz-request-id"),
+				HostID:     resp.Header.Get("x-amz-id-2"),
+				Region:     resp.Header.Get("x-amz-bucket-region"),
 			}
 		case http.StatusConflict:
 			errResp = ErrorResponse{
-				Code:            "Conflict",
-				Message:         "Bucket not empty.",
-				BucketName:      bucketName,
-				RequestID:       resp.Header.Get("x-amz-request-id"),
-				HostID:          resp.Header.Get("x-amz-id-2"),
-				AmzBucketRegion: resp.Header.Get("x-amz-bucket-region"),
+				Code:       "Conflict",
+				Message:    "Bucket not empty.",
+				BucketName: bucketName,
+				RequestID:  resp.Header.Get("x-amz-request-id"),
+				HostID:     resp.Header.Get("x-amz-id-2"),
+				Region:     resp.Header.Get("x-amz-bucket-region"),
 			}
 		default:
 			errResp = ErrorResponse{
-				Code:            resp.Status,
-				Message:         resp.Status,
-				BucketName:      bucketName,
-				RequestID:       resp.Header.Get("x-amz-request-id"),
-				HostID:          resp.Header.Get("x-amz-id-2"),
-				AmzBucketRegion: resp.Header.Get("x-amz-bucket-region"),
+				Code:       resp.Status,
+				Message:    resp.Status,
+				BucketName: bucketName,
+				RequestID:  resp.Header.Get("x-amz-request-id"),
+				HostID:     resp.Header.Get("x-amz-id-2"),
+				Region:     resp.Header.Get("x-amz-bucket-region"),
 			}
 		}
 	}
-
-	// AccessDenied without a signature mismatch code, usually means
-	// that the bucket policy has certain restrictions where some API
-	// operations are not allowed. Handle this case so that top level
-	// callers can interpret this easily and fall back if needed to a
-	// lower functionality call. Read each individual API specific
-	// code for such fallbacks.
-	if errResp.Code == "AccessDenied" && errResp.Message == "Access Denied" {
-		errResp.Code = "NotImplemented"
-		errResp.Message = "Operation is not allowed according to your bucket policy."
-	}
 	return errResp
 }
 
diff --git a/vendor/github.com/minio/minio-go/api-get.go b/vendor/github.com/minio/minio-go/api-get.go
index 56d44c9f5..3362a2283 100644
--- a/vendor/github.com/minio/minio-go/api-get.go
+++ b/vendor/github.com/minio/minio-go/api-get.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 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 +20,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"math"
 	"net/http"
 	"net/url"
 	"strings"
@@ -48,17 +47,11 @@ func (c Client) GetBucketACL(bucketName string) (BucketACL, error) {
 	urlValues := make(url.Values)
 	urlValues.Set("acl", "")
 
-	// Instantiate a new request.
-	req, err := c.newRequest("GET", requestMetadata{
+	// Execute GET acl on bucketName.
+	resp, err := c.executeMethod("GET", requestMetadata{
 		bucketName:  bucketName,
 		queryValues: urlValues,
 	})
-	if err != nil {
-		return "", err
-	}
-
-	// Initiate the request.
-	resp, err := c.do(req)
 	defer closeResponse(resp)
 	if err != nil {
 		return "", err
@@ -83,12 +76,12 @@ func (c Client) GetBucketACL(bucketName string) (BucketACL, error) {
 	if !isGoogleEndpoint(c.endpointURL) {
 		if policy.AccessControlList.Grant == nil {
 			errorResponse := ErrorResponse{
-				Code:            "InternalError",
-				Message:         "Access control Grant list is empty. " + reportIssue,
-				BucketName:      bucketName,
-				RequestID:       resp.Header.Get("x-amz-request-id"),
-				HostID:          resp.Header.Get("x-amz-id-2"),
-				AmzBucketRegion: resp.Header.Get("x-amz-bucket-region"),
+				Code:       "InternalError",
+				Message:    "Access control Grant list is empty. " + reportIssue,
+				BucketName: bucketName,
+				RequestID:  resp.Header.Get("x-amz-request-id"),
+				HostID:     resp.Header.Get("x-amz-id-2"),
+				Region:     resp.Header.Get("x-amz-bucket-region"),
 			}
 			return "", errorResponse
 		}
@@ -177,7 +170,11 @@ func (c Client) GetObject(bucketName, objectName string) (*Object, error) {
 				// Get shortest length.
 				// NOTE: Last remaining bytes are usually smaller than
 				// req.Buffer size. Use that as the final length.
-				length := math.Min(float64(len(req.Buffer)), float64(objectInfo.Size-req.Offset))
+				// Don't use Math.min() here to avoid converting int64 to float64
+				length := int64(len(req.Buffer))
+				if objectInfo.Size-req.Offset < length {
+					length = objectInfo.Size - req.Offset
+				}
 				httpReader, _, err := c.getObject(bucketName, objectName, req.Offset, int64(length))
 				if err != nil {
 					resCh <- readResponse{
@@ -484,8 +481,8 @@ func (c Client) getObject(bucketName, objectName string, offset, length int64) (
 		customHeader.Set("Range", fmt.Sprintf("bytes=%d", length))
 	}
 
-	// Instantiate a new request.
-	req, err := c.newRequest("GET", requestMetadata{
+	// Execute GET on objectName.
+	resp, err := c.executeMethod("GET", requestMetadata{
 		bucketName:   bucketName,
 		objectName:   objectName,
 		customHeader: customHeader,
@@ -493,11 +490,6 @@ func (c Client) getObject(bucketName, objectName string, offset, length int64) (
 	if err != nil {
 		return nil, ObjectInfo{}, err
 	}
-	// Execute the request.
-	resp, err := c.do(req)
-	if err != nil {
-		return nil, ObjectInfo{}, err
-	}
 	if resp != nil {
 		if resp.StatusCode != http.StatusOK && resp.StatusCode != http.StatusPartialContent {
 			return nil, ObjectInfo{}, httpRespToErrorResponse(resp, bucketName, objectName)
@@ -513,11 +505,11 @@ func (c Client) getObject(bucketName, objectName string, offset, length int64) (
 	if err != nil {
 		msg := "Last-Modified time format not recognized. " + reportIssue
 		return nil, ObjectInfo{}, ErrorResponse{
-			Code:            "InternalError",
-			Message:         msg,
-			RequestID:       resp.Header.Get("x-amz-request-id"),
-			HostID:          resp.Header.Get("x-amz-id-2"),
-			AmzBucketRegion: resp.Header.Get("x-amz-bucket-region"),
+			Code:      "InternalError",
+			Message:   msg,
+			RequestID: resp.Header.Get("x-amz-request-id"),
+			HostID:    resp.Header.Get("x-amz-id-2"),
+			Region:    resp.Header.Get("x-amz-bucket-region"),
 		}
 	}
 	// Get content-type.
diff --git a/vendor/github.com/minio/minio-go/api-list.go b/vendor/github.com/minio/minio-go/api-list.go
index c7cbac7d1..b17a51acc 100644
--- a/vendor/github.com/minio/minio-go/api-list.go
+++ b/vendor/github.com/minio/minio-go/api-list.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -34,13 +34,8 @@ import (
 //   }
 //
 func (c Client) ListBuckets() ([]BucketInfo, error) {
-	// Instantiate a new request.
-	req, err := c.newRequest("GET", requestMetadata{})
-	if err != nil {
-		return nil, err
-	}
-	// Initiate the request.
-	resp, err := c.do(req)
+	// Execute GET on service.
+	resp, err := c.executeMethod("GET", requestMetadata{})
 	defer closeResponse(resp)
 	if err != nil {
 		return nil, err
@@ -206,16 +201,11 @@ func (c Client) listObjectsQuery(bucketName, objectPrefix, objectMarker, delimit
 	// Set max keys.
 	urlValues.Set("max-keys", fmt.Sprintf("%d", maxkeys))
 
-	// Initialize a new request.
-	req, err := c.newRequest("GET", requestMetadata{
+	// Execute GET on bucket to list objects.
+	resp, err := c.executeMethod("GET", requestMetadata{
 		bucketName:  bucketName,
 		queryValues: urlValues,
 	})
-	if err != nil {
-		return listBucketResult{}, err
-	}
-	// Execute list buckets.
-	resp, err := c.do(req)
 	defer closeResponse(resp)
 	if err != nil {
 		return listBucketResult{}, err
@@ -388,16 +378,11 @@ func (c Client) listMultipartUploadsQuery(bucketName, keyMarker, uploadIDMarker,
 	// Set max-uploads.
 	urlValues.Set("max-uploads", fmt.Sprintf("%d", maxUploads))
 
-	// Instantiate a new request.
-	req, err := c.newRequest("GET", requestMetadata{
+	// Execute GET on bucketName to list multipart uploads.
+	resp, err := c.executeMethod("GET", requestMetadata{
 		bucketName:  bucketName,
 		queryValues: urlValues,
 	})
-	if err != nil {
-		return listMultipartUploadsResult{}, err
-	}
-	// Execute list multipart uploads request.
-	resp, err := c.do(req)
 	defer closeResponse(resp)
 	if err != nil {
 		return listMultipartUploadsResult{}, err
@@ -510,16 +495,12 @@ func (c Client) listObjectPartsQuery(bucketName, objectName, uploadID string, pa
 	// Set max parts.
 	urlValues.Set("max-parts", fmt.Sprintf("%d", maxParts))
 
-	req, err := c.newRequest("GET", requestMetadata{
+	// Execute GET on objectName to get list of parts.
+	resp, err := c.executeMethod("GET", requestMetadata{
 		bucketName:  bucketName,
 		objectName:  objectName,
 		queryValues: urlValues,
 	})
-	if err != nil {
-		return listObjectPartsResult{}, err
-	}
-	// Exectue list object parts.
-	resp, err := c.do(req)
 	defer closeResponse(resp)
 	if err != nil {
 		return listObjectPartsResult{}, err
diff --git a/vendor/github.com/minio/minio-go/api-presigned.go b/vendor/github.com/minio/minio-go/api-presigned.go
index 1a2a34752..0d3285253 100644
--- a/vendor/github.com/minio/minio-go/api-presigned.go
+++ b/vendor/github.com/minio/minio-go/api-presigned.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
diff --git a/vendor/github.com/minio/minio-go/api-put-bucket.go b/vendor/github.com/minio/minio-go/api-put-bucket.go
index 986099e34..115112461 100644
--- a/vendor/github.com/minio/minio-go/api-put-bucket.go
+++ b/vendor/github.com/minio/minio-go/api-put-bucket.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -74,7 +74,7 @@ func (c Client) MakeBucket(bucketName string, acl BucketACL, location string) er
 		}
 	}
 
-	// Save the location into cache on a successfull makeBucket response.
+	// Save the location into cache on a successful makeBucket response.
 	c.bucketLocCache.Set(bucketName, location)
 
 	// Return.
@@ -180,19 +180,16 @@ func (c Client) SetBucketACL(bucketName string, acl BucketACL) error {
 		customHeader.Set("x-amz-acl", "private")
 	}
 
-	// Instantiate a new request.
-	req, err := c.newRequest("PUT", requestMetadata{
+	// Execute PUT bucket.
+	resp, err := c.executeMethod("PUT", requestMetadata{
 		bucketName:   bucketName,
 		queryValues:  urlValues,
 		customHeader: customHeader,
 	})
+	defer closeResponse(resp)
 	if err != nil {
 		return err
 	}
-
-	// Initiate the request.
-	resp, err := c.do(req)
-	defer closeResponse(resp)
 	if err != nil {
 		return err
 	}
diff --git a/vendor/github.com/minio/minio-go/api-put-object-file.go b/vendor/github.com/minio/minio-go/api-put-object-file.go
index d212dfb87..d4772c53a 100644
--- a/vendor/github.com/minio/minio-go/api-put-object-file.go
+++ b/vendor/github.com/minio/minio-go/api-put-object-file.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -187,7 +187,7 @@ func (c Client) putObjectMultipartFromFile(bucketName, objectName string, fileRe
 		}, partsInfo) {
 			// Proceed to upload the part.
 			var objPart objectPart
-			objPart, err = c.uploadPart(bucketName, objectName, uploadID, ioutil.NopCloser(reader), partNumber,
+			objPart, err = c.uploadPart(bucketName, objectName, uploadID, reader, partNumber,
 				md5Sum, sha256Sum, prtSize)
 			if err != nil {
 				return totalUploadedSize, err
diff --git a/vendor/github.com/minio/minio-go/api-put-object-multipart.go b/vendor/github.com/minio/minio-go/api-put-object-multipart.go
index ee0019165..8b3db1039 100644
--- a/vendor/github.com/minio/minio-go/api-put-object-multipart.go
+++ b/vendor/github.com/minio/minio-go/api-put-object-multipart.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -124,7 +124,7 @@ func (c Client) putObjectMultipartStream(bucketName, objectName string, reader i
 		var reader io.Reader
 		// Update progress reader appropriately to the latest offset
 		// as we read from the source.
-		reader = newHook(tmpBuffer, progress)
+		reader = newHook(bytes.NewReader(tmpBuffer.Bytes()), progress)
 
 		// Verify if part should be uploaded.
 		if shouldUploadPart(objectPart{
@@ -134,8 +134,7 @@ func (c Client) putObjectMultipartStream(bucketName, objectName string, reader i
 		}, partsInfo) {
 			// Proceed to upload the part.
 			var objPart objectPart
-			objPart, err = c.uploadPart(bucketName, objectName, uploadID, ioutil.NopCloser(reader), partNumber,
-				md5Sum, sha256Sum, prtSize)
+			objPart, err = c.uploadPart(bucketName, objectName, uploadID, reader, partNumber, md5Sum, sha256Sum, prtSize)
 			if err != nil {
 				// Reset the temporary buffer upon any error.
 				tmpBuffer.Reset()
@@ -230,14 +229,8 @@ func (c Client) initiateMultipartUpload(bucketName, objectName, contentType stri
 		customHeader: customHeader,
 	}
 
-	// Instantiate the request.
-	req, err := c.newRequest("POST", reqMetadata)
-	if err != nil {
-		return initiateMultipartUploadResult{}, err
-	}
-
-	// Execute the request.
-	resp, err := c.do(req)
+	// Execute POST on an objectName to initiate multipart upload.
+	resp, err := c.executeMethod("POST", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return initiateMultipartUploadResult{}, err
@@ -257,7 +250,7 @@ func (c Client) initiateMultipartUpload(bucketName, objectName, contentType stri
 }
 
 // uploadPart - Uploads a part in a multipart upload.
-func (c Client) uploadPart(bucketName, objectName, uploadID string, reader io.ReadCloser, partNumber int, md5Sum, sha256Sum []byte, size int64) (objectPart, error) {
+func (c Client) uploadPart(bucketName, objectName, uploadID string, reader io.Reader, partNumber int, md5Sum, sha256Sum []byte, size int64) (objectPart, error) {
 	// Input validation.
 	if err := isValidBucketName(bucketName); err != nil {
 		return objectPart{}, err
@@ -295,13 +288,8 @@ func (c Client) uploadPart(bucketName, objectName, uploadID string, reader io.Re
 		contentSHA256Bytes: sha256Sum,
 	}
 
-	// Instantiate a request.
-	req, err := c.newRequest("PUT", reqMetadata)
-	if err != nil {
-		return objectPart{}, err
-	}
-	// Execute the request.
-	resp, err := c.do(req)
+	// Execute PUT on each part.
+	resp, err := c.executeMethod("PUT", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return objectPart{}, err
@@ -342,24 +330,18 @@ func (c Client) completeMultipartUpload(bucketName, objectName, uploadID string,
 	}
 
 	// Instantiate all the complete multipart buffer.
-	completeMultipartUploadBuffer := bytes.NewBuffer(completeMultipartUploadBytes)
+	completeMultipartUploadBuffer := bytes.NewReader(completeMultipartUploadBytes)
 	reqMetadata := requestMetadata{
 		bucketName:         bucketName,
 		objectName:         objectName,
 		queryValues:        urlValues,
-		contentBody:        ioutil.NopCloser(completeMultipartUploadBuffer),
-		contentLength:      int64(completeMultipartUploadBuffer.Len()),
-		contentSHA256Bytes: sum256(completeMultipartUploadBuffer.Bytes()),
+		contentBody:        completeMultipartUploadBuffer,
+		contentLength:      int64(len(completeMultipartUploadBytes)),
+		contentSHA256Bytes: sum256(completeMultipartUploadBytes),
 	}
 
-	// Instantiate the request.
-	req, err := c.newRequest("POST", reqMetadata)
-	if err != nil {
-		return completeMultipartUploadResult{}, err
-	}
-
-	// Execute the request.
-	resp, err := c.do(req)
+	// Execute POST to complete multipart upload for an objectName.
+	resp, err := c.executeMethod("POST", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return completeMultipartUploadResult{}, err
diff --git a/vendor/github.com/minio/minio-go/api-put-object-progress.go b/vendor/github.com/minio/minio-go/api-put-object-progress.go
index ae4425d49..ebbc380c3 100644
--- a/vendor/github.com/minio/minio-go/api-put-object-progress.go
+++ b/vendor/github.com/minio/minio-go/api-put-object-progress.go
@@ -91,7 +91,7 @@ func (c Client) PutObjectWithProgress(bucketName, objectName string, reader io.R
 		errResp := ToErrorResponse(err)
 		// Verify if multipart functionality is not available, if not
 		// fall back to single PutObject operation.
-		if errResp.Code == "NotImplemented" {
+		if errResp.Code == "AccessDenied" && errResp.Message == "Access Denied." {
 			// Verify if size of reader is greater than '5GiB'.
 			if size > maxSinglePutObjectSize {
 				return 0, ErrEntityTooLarge(size, maxSinglePutObjectSize, bucketName, objectName)
diff --git a/vendor/github.com/minio/minio-go/api-put-object-readat.go b/vendor/github.com/minio/minio-go/api-put-object-readat.go
index ddb1ab3dc..b02499f7d 100644
--- a/vendor/github.com/minio/minio-go/api-put-object-readat.go
+++ b/vendor/github.com/minio/minio-go/api-put-object-readat.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -155,12 +155,11 @@ func (c Client) putObjectMultipartFromReadAt(bucketName, objectName string, read
 		var reader io.Reader
 		// Update progress reader appropriately to the latest offset
 		// as we read from the source.
-		reader = newHook(tmpBuffer, progress)
+		reader = newHook(bytes.NewReader(tmpBuffer.Bytes()), progress)
 
 		// Proceed to upload the part.
 		var objPart objectPart
-		objPart, err = c.uploadPart(bucketName, objectName, uploadID, ioutil.NopCloser(reader),
-			partNumber, md5Sum, sha256Sum, prtSize)
+		objPart, err = c.uploadPart(bucketName, objectName, uploadID, reader, partNumber, md5Sum, sha256Sum, prtSize)
 		if err != nil {
 			// Reset the buffer upon any error.
 			tmpBuffer.Reset()
diff --git a/vendor/github.com/minio/minio-go/api-put-object.go b/vendor/github.com/minio/minio-go/api-put-object.go
index a09e658f4..1586580ed 100644
--- a/vendor/github.com/minio/minio-go/api-put-object.go
+++ b/vendor/github.com/minio/minio-go/api-put-object.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -146,11 +146,11 @@ func (c Client) putObjectNoChecksum(bucketName, objectName string, reader io.Rea
 
 	// Update progress reader appropriately to the latest offset as we
 	// read from the source.
-	reader = newHook(reader, progress)
+	readSeeker := newHook(reader, progress)
 
 	// This function does not calculate sha256 and md5sum for payload.
 	// Execute put object.
-	st, err := c.putObjectDo(bucketName, objectName, ioutil.NopCloser(reader), nil, nil, size, contentType)
+	st, err := c.putObjectDo(bucketName, objectName, readSeeker, nil, nil, size, contentType)
 	if err != nil {
 		return 0, err
 	}
@@ -178,12 +178,12 @@ func (c Client) putObjectSingle(bucketName, objectName string, reader io.Reader,
 		size = maxSinglePutObjectSize
 	}
 	var md5Sum, sha256Sum []byte
-	var readCloser io.ReadCloser
 	if size <= minPartSize {
 		// Initialize a new temporary buffer.
 		tmpBuffer := new(bytes.Buffer)
 		md5Sum, sha256Sum, size, err = c.hashCopyN(tmpBuffer, reader, size)
-		readCloser = ioutil.NopCloser(tmpBuffer)
+		reader = bytes.NewReader(tmpBuffer.Bytes())
+		tmpBuffer.Reset()
 	} else {
 		// Initialize a new temporary file.
 		var tmpFile *tempFile
@@ -191,12 +191,13 @@ func (c Client) putObjectSingle(bucketName, objectName string, reader io.Reader,
 		if err != nil {
 			return 0, err
 		}
+		defer tmpFile.Close()
 		md5Sum, sha256Sum, size, err = c.hashCopyN(tmpFile, reader, size)
 		// Seek back to beginning of the temporary file.
 		if _, err = tmpFile.Seek(0, 0); err != nil {
 			return 0, err
 		}
-		readCloser = tmpFile
+		reader = tmpFile
 	}
 	// Return error if its not io.EOF.
 	if err != nil {
@@ -204,26 +205,26 @@ func (c Client) putObjectSingle(bucketName, objectName string, reader io.Reader,
 			return 0, err
 		}
 	}
-	// Progress the reader to the size.
-	if progress != nil {
-		if _, err = io.CopyN(ioutil.Discard, progress, size); err != nil {
-			return size, err
-		}
-	}
 	// Execute put object.
-	st, err := c.putObjectDo(bucketName, objectName, readCloser, md5Sum, sha256Sum, size, contentType)
+	st, err := c.putObjectDo(bucketName, objectName, reader, md5Sum, sha256Sum, size, contentType)
 	if err != nil {
 		return 0, err
 	}
 	if st.Size != size {
 		return 0, ErrUnexpectedEOF(st.Size, size, bucketName, objectName)
 	}
+	// Progress the reader to the size if putObjectDo is successful.
+	if progress != nil {
+		if _, err = io.CopyN(ioutil.Discard, progress, size); err != nil {
+			return size, err
+		}
+	}
 	return size, nil
 }
 
 // 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.ReadCloser, md5Sum []byte, sha256Sum []byte, size int64, contentType string) (ObjectInfo, error) {
+func (c Client) putObjectDo(bucketName, objectName string, reader io.Reader, md5Sum []byte, sha256Sum []byte, size int64, contentType string) (ObjectInfo, error) {
 	// Input validation.
 	if err := isValidBucketName(bucketName); err != nil {
 		return ObjectInfo{}, err
@@ -258,13 +259,9 @@ func (c Client) putObjectDo(bucketName, objectName string, reader io.ReadCloser,
 		contentMD5Bytes:    md5Sum,
 		contentSHA256Bytes: sha256Sum,
 	}
-	// Initiate new request.
-	req, err := c.newRequest("PUT", reqMetadata)
-	if err != nil {
-		return ObjectInfo{}, err
-	}
-	// Execute the request.
-	resp, err := c.do(req)
+
+	// Execute PUT an objectName.
+	resp, err := c.executeMethod("PUT", reqMetadata)
 	defer closeResponse(resp)
 	if err != nil {
 		return ObjectInfo{}, err
diff --git a/vendor/github.com/minio/minio-go/api-remove.go b/vendor/github.com/minio/minio-go/api-remove.go
index 8f59c15e6..46d47abf1 100644
--- a/vendor/github.com/minio/minio-go/api-remove.go
+++ b/vendor/github.com/minio/minio-go/api-remove.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -30,15 +30,10 @@ func (c Client) RemoveBucket(bucketName string) error {
 	if err := isValidBucketName(bucketName); err != nil {
 		return err
 	}
-	// Instantiate a new request.
-	req, err := c.newRequest("DELETE", requestMetadata{
+	// Execute DELETE on bucket.
+	resp, err := c.executeMethod("DELETE", requestMetadata{
 		bucketName: bucketName,
 	})
-	if err != nil {
-		return err
-	}
-	// Initiate the request.
-	resp, err := c.do(req)
 	defer closeResponse(resp)
 	if err != nil {
 		return err
@@ -64,16 +59,11 @@ func (c Client) RemoveObject(bucketName, objectName string) error {
 	if err := isValidObjectName(objectName); err != nil {
 		return err
 	}
-	// Instantiate the request.
-	req, err := c.newRequest("DELETE", requestMetadata{
+	// Execute DELETE on objectName.
+	resp, err := c.executeMethod("DELETE", requestMetadata{
 		bucketName: bucketName,
 		objectName: objectName,
 	})
-	if err != nil {
-		return err
-	}
-	// Initiate the request.
-	resp, err := c.do(req)
 	defer closeResponse(resp)
 	if err != nil {
 		return err
@@ -124,18 +114,12 @@ func (c Client) abortMultipartUpload(bucketName, objectName, uploadID string) er
 	urlValues := make(url.Values)
 	urlValues.Set("uploadId", uploadID)
 
-	// Instantiate a new DELETE request.
-	req, err := c.newRequest("DELETE", requestMetadata{
+	// Execute DELETE on multipart upload.
+	resp, err := c.executeMethod("DELETE", requestMetadata{
 		bucketName:  bucketName,
 		objectName:  objectName,
 		queryValues: urlValues,
 	})
-	if err != nil {
-		return err
-	}
-
-	// Initiate the request.
-	resp, err := c.do(req)
 	defer closeResponse(resp)
 	if err != nil {
 		return err
@@ -149,13 +133,13 @@ func (c Client) abortMultipartUpload(bucketName, objectName, uploadID string) er
 				// This is needed specifically for abort and it cannot
 				// be converged into default case.
 				errorResponse = ErrorResponse{
-					Code:            "NoSuchUpload",
-					Message:         "The specified multipart upload does not exist.",
-					BucketName:      bucketName,
-					Key:             objectName,
-					RequestID:       resp.Header.Get("x-amz-request-id"),
-					HostID:          resp.Header.Get("x-amz-id-2"),
-					AmzBucketRegion: resp.Header.Get("x-amz-bucket-region"),
+					Code:       "NoSuchUpload",
+					Message:    "The specified multipart upload does not exist.",
+					BucketName: bucketName,
+					Key:        objectName,
+					RequestID:  resp.Header.Get("x-amz-request-id"),
+					HostID:     resp.Header.Get("x-amz-id-2"),
+					Region:     resp.Header.Get("x-amz-bucket-region"),
 				}
 			default:
 				return httpRespToErrorResponse(resp, bucketName, objectName)
diff --git a/vendor/github.com/minio/minio-go/api-stat.go b/vendor/github.com/minio/minio-go/api-stat.go
index 20f66e8fc..b5db7fedc 100644
--- a/vendor/github.com/minio/minio-go/api-stat.go
+++ b/vendor/github.com/minio/minio-go/api-stat.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -29,15 +29,11 @@ func (c Client) BucketExists(bucketName string) error {
 	if err := isValidBucketName(bucketName); err != nil {
 		return err
 	}
-	// Instantiate a new request.
-	req, err := c.newRequest("HEAD", requestMetadata{
+
+	// Execute HEAD on bucketName.
+	resp, err := c.executeMethod("HEAD", requestMetadata{
 		bucketName: bucketName,
 	})
-	if err != nil {
-		return err
-	}
-	// Initiate the request.
-	resp, err := c.do(req)
 	defer closeResponse(resp)
 	if err != nil {
 		return err
@@ -59,16 +55,12 @@ func (c Client) StatObject(bucketName, objectName string) (ObjectInfo, error) {
 	if err := isValidObjectName(objectName); err != nil {
 		return ObjectInfo{}, err
 	}
-	// Instantiate a new request.
-	req, err := c.newRequest("HEAD", requestMetadata{
+
+	// Execute HEAD on objectName.
+	resp, err := c.executeMethod("HEAD", requestMetadata{
 		bucketName: bucketName,
 		objectName: objectName,
 	})
-	if err != nil {
-		return ObjectInfo{}, err
-	}
-	// Initiate the request.
-	resp, err := c.do(req)
 	defer closeResponse(resp)
 	if err != nil {
 		return ObjectInfo{}, err
@@ -87,26 +79,26 @@ func (c Client) StatObject(bucketName, objectName string) (ObjectInfo, error) {
 	size, err := strconv.ParseInt(resp.Header.Get("Content-Length"), 10, 64)
 	if err != nil {
 		return ObjectInfo{}, ErrorResponse{
-			Code:            "InternalError",
-			Message:         "Content-Length is invalid. " + reportIssue,
-			BucketName:      bucketName,
-			Key:             objectName,
-			RequestID:       resp.Header.Get("x-amz-request-id"),
-			HostID:          resp.Header.Get("x-amz-id-2"),
-			AmzBucketRegion: resp.Header.Get("x-amz-bucket-region"),
+			Code:       "InternalError",
+			Message:    "Content-Length is invalid. " + reportIssue,
+			BucketName: bucketName,
+			Key:        objectName,
+			RequestID:  resp.Header.Get("x-amz-request-id"),
+			HostID:     resp.Header.Get("x-amz-id-2"),
+			Region:     resp.Header.Get("x-amz-bucket-region"),
 		}
 	}
 	// Parse Last-Modified has http time format.
 	date, err := time.Parse(http.TimeFormat, resp.Header.Get("Last-Modified"))
 	if err != nil {
 		return ObjectInfo{}, ErrorResponse{
-			Code:            "InternalError",
-			Message:         "Last-Modified time format is invalid. " + reportIssue,
-			BucketName:      bucketName,
-			Key:             objectName,
-			RequestID:       resp.Header.Get("x-amz-request-id"),
-			HostID:          resp.Header.Get("x-amz-id-2"),
-			AmzBucketRegion: resp.Header.Get("x-amz-bucket-region"),
+			Code:       "InternalError",
+			Message:    "Last-Modified time format is invalid. " + reportIssue,
+			BucketName: bucketName,
+			Key:        objectName,
+			RequestID:  resp.Header.Get("x-amz-request-id"),
+			HostID:     resp.Header.Get("x-amz-id-2"),
+			Region:     resp.Header.Get("x-amz-bucket-region"),
 		}
 	}
 	// Fetch content type if any present.
diff --git a/vendor/github.com/minio/minio-go/api.go b/vendor/github.com/minio/minio-go/api.go
index d52d641bb..abeeb3b05 100644
--- a/vendor/github.com/minio/minio-go/api.go
+++ b/vendor/github.com/minio/minio-go/api.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,6 +22,7 @@ import (
 	"encoding/hex"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"net/http"
 	"net/http/httputil"
 	"net/url"
@@ -64,7 +65,7 @@ type Client struct {
 // Global constants.
 const (
 	libraryName    = "minio-go"
-	libraryVersion = "0.2.5"
+	libraryVersion = "1.0.0"
 )
 
 // User Agent should always following the below style.
@@ -78,7 +79,7 @@ const (
 
 // NewV2 - instantiate minio client with Amazon S3 signature version
 // '2' compatibility.
-func NewV2(endpoint string, accessKeyID, secretAccessKey string, insecure bool) (CloudStorageClient, error) {
+func NewV2(endpoint string, accessKeyID, secretAccessKey string, insecure bool) (*Client, error) {
 	clnt, err := privateNew(endpoint, accessKeyID, secretAccessKey, insecure)
 	if err != nil {
 		return nil, err
@@ -90,7 +91,7 @@ func NewV2(endpoint string, accessKeyID, secretAccessKey string, insecure bool)
 
 // NewV4 - instantiate minio client with Amazon S3 signature version
 // '4' compatibility.
-func NewV4(endpoint string, accessKeyID, secretAccessKey string, insecure bool) (CloudStorageClient, error) {
+func NewV4(endpoint string, accessKeyID, secretAccessKey string, insecure bool) (*Client, error) {
 	clnt, err := privateNew(endpoint, accessKeyID, secretAccessKey, insecure)
 	if err != nil {
 		return nil, err
@@ -102,7 +103,7 @@ func NewV4(endpoint string, accessKeyID, secretAccessKey string, insecure bool)
 
 // New - instantiate minio client Client, adds automatic verification
 // of signature.
-func New(endpoint string, accessKeyID, secretAccessKey string, insecure bool) (CloudStorageClient, error) {
+func New(endpoint string, accessKeyID, secretAccessKey string, insecure bool) (*Client, error) {
 	clnt, err := privateNew(endpoint, accessKeyID, secretAccessKey, insecure)
 	if err != nil {
 		return nil, err
@@ -112,7 +113,7 @@ func New(endpoint string, accessKeyID, secretAccessKey string, insecure bool) (C
 	if isGoogleEndpoint(clnt.endpointURL) {
 		clnt.signature = SignatureV2
 	}
-	// If Amazon S3 set to signature v2.
+	// If Amazon S3 set to signature v2.n
 	if isAmazonEndpoint(clnt.endpointURL) {
 		clnt.signature = SignatureV4
 	}
@@ -138,7 +139,14 @@ func privateNew(endpoint, accessKeyID, secretAccessKey string, insecure bool) (*
 	clnt.endpointURL = endpointURL
 
 	// Instantiate http client and bucket location cache.
-	clnt.httpClient = &http.Client{}
+	clnt.httpClient = &http.Client{
+		// Setting a sensible time out of 2minutes to wait for response
+		// headers. Request is pro-actively cancelled after 2minutes
+		// if no response was received from server.
+		Timeout:   2 * time.Minute,
+		Transport: http.DefaultTransport,
+	}
+
 	clnt.bucketLocCache = newBucketLocationCache()
 
 	// Return.
@@ -214,7 +222,7 @@ type requestMetadata struct {
 
 	// Generated by our internal code.
 	bucketLocation     string
-	contentBody        io.ReadCloser
+	contentBody        io.Reader
 	contentLength      int64
 	contentSHA256Bytes []byte
 	contentMD5Bytes    []byte
@@ -292,7 +300,7 @@ func (c Client) dumpHTTP(req *http.Request, resp *http.Response) error {
 		// to zero. Keep this workaround until the above bug is fixed.
 		if resp.ContentLength == 0 {
 			var buffer bytes.Buffer
-			if err := resp.Header.Write(&buffer); err != nil {
+			if err = resp.Header.Write(&buffer); err != nil {
 				return err
 			}
 			respTrace = buffer.Bytes()
@@ -322,17 +330,28 @@ func (c Client) dumpHTTP(req *http.Request, resp *http.Response) error {
 
 // do - execute http request.
 func (c Client) do(req *http.Request) (*http.Response, error) {
-	// execute the request.
+	// do the request.
 	resp, err := c.httpClient.Do(req)
 	if err != nil {
 		// Handle this specifically for now until future Golang
 		// versions fix this issue properly.
 		urlErr, ok := err.(*url.Error)
 		if ok && strings.Contains(urlErr.Err.Error(), "EOF") {
-			return nil, fmt.Errorf("Connection closed by foreign host %s. Retry again.", urlErr.URL)
+			return nil, &url.Error{
+				Op:  urlErr.Op,
+				URL: urlErr.URL,
+				Err: fmt.Errorf("Connection closed by foreign host %s. Retry again.", urlErr.URL),
+			}
 		}
-		return resp, err
+		return nil, err
 	}
+
+	// Response cannot be non-nil, report if its the case.
+	if resp == nil {
+		msg := "Response is empty. " + reportIssue
+		return nil, ErrInvalidArgument(msg)
+	}
+
 	// If trace is enabled, dump http request and response.
 	if c.isTraceEnabled {
 		err = c.dumpHTTP(req, resp)
@@ -343,6 +362,85 @@ func (c Client) do(req *http.Request) (*http.Response, error) {
 	return resp, nil
 }
 
+// List of success status.
+var successStatus = []int{
+	http.StatusOK,
+	http.StatusNoContent,
+	http.StatusPartialContent,
+}
+
+// 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) {
+	var isRetryable bool     // Indicates if request can be retried.
+	var bodySeeker io.Seeker // Extracted seeker from io.Reader.
+	if metadata.contentBody != nil {
+		// Check if body is seekable then it is retryable.
+		bodySeeker, isRetryable = metadata.contentBody.(io.Seeker)
+	}
+
+	// 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
+	// binomial fashion.
+	for range newRetryTimer(MaxRetry, time.Second, time.Second*30, MaxJitter) {
+		if isRetryable {
+			// Seek back to beginning for each attempt.
+			if _, err = bodySeeker.Seek(0, 0); err != nil {
+				// If seek failed, no need to retry.
+				return nil, err
+			}
+		}
+
+		// Instantiate a new request.
+		var req *http.Request
+		req, err = c.newRequest(method, metadata)
+		if err != nil {
+			errResponse := ToErrorResponse(err)
+			if isS3CodeRetryable(errResponse.Code) {
+				continue // Retry.
+			}
+			return nil, err
+		}
+
+		// Initiate the request.
+		res, err = c.do(req)
+		if err != nil {
+			// For supported network errors verify.
+			if isNetErrorRetryable(err) {
+				continue // Retry.
+			}
+			// For other errors, return here no need to retry.
+			return nil, err
+		}
+
+		// For any known successful http status, return quickly.
+		for _, httpStatus := range successStatus {
+			if httpStatus == res.StatusCode {
+				return res, nil
+			}
+		}
+
+		// For errors verify if its retryable otherwise fail quickly.
+		errResponse := ToErrorResponse(httpRespToErrorResponse(res, metadata.bucketName, metadata.objectName))
+		// Bucket region if set in error response, we can retry the
+		// request with the new region.
+		if errResponse.Region != "" {
+			c.bucketLocCache.Set(metadata.bucketName, errResponse.Region)
+			continue // Retry.
+		}
+
+		// Verify if error response code is retryable.
+		if isS3CodeRetryable(errResponse.Code) {
+			continue // Retry.
+		}
+		// For all other cases break out of the retry loop.
+		break
+	}
+	return res, err
+}
+
 // newRequest - instantiate a new HTTP request for a given method.
 func (c Client) newRequest(method string, metadata requestMetadata) (req *http.Request, err error) {
 	// If no method is supplied default to 'POST'.
@@ -391,10 +489,13 @@ func (c Client) newRequest(method string, metadata requestMetadata) (req *http.R
 
 	// Set content body if available.
 	if metadata.contentBody != nil {
-		req.Body = metadata.contentBody
+		req.Body = ioutil.NopCloser(metadata.contentBody)
 	}
 
-	// set UserAgent for the request.
+	// set 'Expect' header for the request.
+	req.Header.Set("Expect", "100-continue")
+
+	// set 'User-Agent' header for the request.
 	c.setUserAgent(req)
 
 	// Set all headers.
@@ -493,46 +594,3 @@ func (c Client) makeTargetURL(bucketName, objectName, bucketLocation string, que
 
 	return u, nil
 }
-
-// CloudStorageClient - Cloud Storage Client interface.
-type CloudStorageClient interface {
-	// Bucket Read/Write/Stat operations.
-	MakeBucket(bucketName string, cannedACL BucketACL, location string) error
-	BucketExists(bucketName string) error
-	RemoveBucket(bucketName string) error
-	SetBucketACL(bucketName string, cannedACL BucketACL) error
-	GetBucketACL(bucketName string) (BucketACL, error)
-
-	ListBuckets() ([]BucketInfo, error)
-	ListObjects(bucket, prefix string, recursive bool, doneCh <-chan struct{}) <-chan ObjectInfo
-	ListIncompleteUploads(bucket, prefix string, recursive bool, doneCh <-chan struct{}) <-chan ObjectMultipartInfo
-
-	// Object Read/Write/Stat operations.
-	GetObject(bucketName, objectName string) (reader *Object, err error)
-	PutObject(bucketName, objectName string, reader io.Reader, contentType string) (n int64, err error)
-	StatObject(bucketName, objectName string) (ObjectInfo, error)
-	RemoveObject(bucketName, objectName string) error
-	RemoveIncompleteUpload(bucketName, objectName string) error
-
-	// File to Object API.
-	FPutObject(bucketName, objectName, filePath, contentType string) (n int64, err error)
-	FGetObject(bucketName, objectName, filePath string) error
-
-	// PutObjectWithProgress for progress.
-	PutObjectWithProgress(bucketName, objectName string, reader io.Reader, contentType string, progress io.Reader) (n int64, err error)
-
-	// Presigned operations.
-	PresignedGetObject(bucketName, objectName string, expires time.Duration, reqParams url.Values) (presignedURL string, err error)
-	PresignedPutObject(bucketName, objectName string, expires time.Duration) (presignedURL string, err error)
-	PresignedPostPolicy(*PostPolicy) (formData map[string]string, err error)
-
-	// Application info.
-	SetAppInfo(appName, appVersion string)
-
-	// Set custom transport.
-	SetCustomTransport(customTransport http.RoundTripper)
-
-	// HTTP tracing methods.
-	TraceOn(traceOutput io.Writer)
-	TraceOff()
-}
diff --git a/vendor/github.com/minio/minio-go/api_functional_v2_test.go b/vendor/github.com/minio/minio-go/api_functional_v2_test.go
deleted file mode 100644
index a3f3411a5..000000000
--- a/vendor/github.com/minio/minio-go/api_functional_v2_test.go
+++ /dev/null
@@ -1,1073 +0,0 @@
-/*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 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_test
-
-import (
-	"bytes"
-	crand "crypto/rand"
-	"errors"
-	"io"
-	"io/ioutil"
-	"math/rand"
-	"net/http"
-	"net/url"
-	"os"
-	"testing"
-	"time"
-
-	"github.com/minio/minio-go"
-)
-
-// Tests bucket re-create errors.
-func TestMakeBucketErrorV2(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 := minio.NewV2(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket in 'eu-west-1'.
-	if err = c.MakeBucket(bucketName, "private", "eu-west-1"); err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-	if err = c.MakeBucket(bucketName, "private", "eu-west-1"); err == nil {
-		t.Fatal("Error: make bucket should should fail for", bucketName)
-	}
-	// Verify valid error response from server.
-	if minio.ToErrorResponse(err).Code != "BucketAlreadyExists" &&
-		minio.ToErrorResponse(err).Code != "BucketAlreadyOwnedByYou" {
-		t.Fatal("Error: Invalid error returned by server", err)
-	}
-	if err = c.RemoveBucket(bucketName); err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-}
-
-// Test get object reader to not throw error on being closed twice.
-func TestGetObjectClosedTwiceV2(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 := minio.NewV2(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Generate data more than 32K
-	buf := make([]byte, rand.Intn(1<<20)+32*1024)
-
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Save the data
-	objectName := randString(60, rand.NewSource(time.Now().UnixNano()))
-	n, err := c.PutObject(bucketName, objectName, bytes.NewReader(buf), "binary/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName, objectName)
-	}
-
-	if n != int64(len(buf)) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
-	}
-
-	// Read the data back
-	r, err := c.GetObject(bucketName, objectName)
-	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 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.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests removing partially uploaded objects.
-func TestRemovePartiallyUploadedV2(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping function tests for short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	// Instantiate new minio client object.
-	c, err := minio.NewV2(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Set user agent.
-	c.SetAppInfo("Minio-go-FunctionalTest", "0.1.0")
-
-	// Enable tracing, write to stdout.
-	// c.TraceOn(os.Stderr)
-
-	// Generate a new random bucket name.
-	bucketName := randString(60, rand.NewSource(time.Now().UnixNano()))
-
-	// make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	reader, writer := io.Pipe()
-	go func() {
-		i := 0
-		for i < 25 {
-			_, err = io.CopyN(writer, crand.Reader, 128*1024)
-			if err != nil {
-				t.Fatal("Error:", err, bucketName)
-			}
-			i++
-		}
-		writer.CloseWithError(errors.New("Proactively closed to be verified later."))
-	}()
-
-	objectName := bucketName + "-resumable"
-	_, err = c.PutObject(bucketName, objectName, reader, "application/octet-stream")
-	if err == nil {
-		t.Fatal("Error: PutObject should fail.")
-	}
-	if err.Error() != "Proactively closed to be verified later." {
-		t.Fatal("Error:", err)
-	}
-	err = c.RemoveIncompleteUpload(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests resumable put object cloud to cloud.
-func TestResumbalePutObjectV2(t *testing.T) {
-	// By passing 'go test -short' skips these tests.
-	if testing.Short() {
-		t.Skip("skipping functional tests for the short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	// Instantiate new minio client object.
-	c, err := minio.NewV2(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Set user agent.
-	c.SetAppInfo("Minio-go-FunctionalTest", "0.1.0")
-
-	// Enable tracing, write to stdout.
-	// c.TraceOn(os.Stderr)
-
-	// Generate a new random bucket name.
-	bucketName := randString(60, rand.NewSource(time.Now().UnixNano()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Create a temporary file.
-	file, err := ioutil.TempFile(os.TempDir(), "resumable")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Copy 11MiB worth of random data.
-	n, err := io.CopyN(file, crand.Reader, 11*1024*1024)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != int64(11*1024*1024) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", 11*1024*1024, n)
-	}
-
-	// Close the file pro-actively for windows.
-	if err = file.Close(); err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// New object name.
-	objectName := bucketName + "-resumable"
-
-	// Upload the file.
-	n, err = c.FPutObject(bucketName, objectName, file.Name(), "application/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != int64(11*1024*1024) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", 11*1024*1024, n)
-	}
-
-	// Get the uploaded object.
-	reader, err := c.GetObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Upload now cloud to cloud.
-	n, err = c.PutObject(bucketName, objectName+"-put", reader, "application/octest-stream")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Get object info.
-	objInfo, err := reader.Stat()
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != objInfo.Size {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", objInfo.Size, n)
-	}
-
-	// Remove all temp files, objects and bucket.
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	err = c.RemoveObject(bucketName, objectName+"-put")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	err = os.Remove(file.Name())
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-}
-
-// Tests resumable file based put object multipart upload.
-func TestResumableFPutObjectV2(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping functional tests for the short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	// Instantiate new minio client object.
-	c, err := minio.NewV2(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Set user agent.
-	c.SetAppInfo("Minio-go-FunctionalTest", "0.1.0")
-
-	// Enable tracing, write to stdout.
-	// c.TraceOn(os.Stderr)
-
-	// Generate a new random bucket name.
-	bucketName := randString(60, rand.NewSource(time.Now().UnixNano()))
-
-	// make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	file, err := ioutil.TempFile(os.TempDir(), "resumable")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	n, err := io.CopyN(file, crand.Reader, 11*1024*1024)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != int64(11*1024*1024) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", 11*1024*1024, n)
-	}
-
-	objectName := bucketName + "-resumable"
-
-	n, err = c.FPutObject(bucketName, objectName, file.Name(), "application/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != int64(11*1024*1024) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", 11*1024*1024, n)
-	}
-
-	// Close the file pro-actively for windows.
-	file.Close()
-
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	err = os.Remove(file.Name())
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests various bucket supported formats.
-func TestMakeBucketRegionsV2(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 := minio.NewV2(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket in 'eu-central-1'.
-	if err = c.MakeBucket(bucketName, "private", "eu-west-1"); err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	if err = c.RemoveBucket(bucketName); err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Make a new bucket with '.' in its name, in 'us-west-2'. This
-	// request is internally staged into a path style instead of
-	// virtual host style.
-	if err = c.MakeBucket(bucketName+".withperiod", "private", "us-west-2"); err != nil {
-		t.Fatal("Error:", err, bucketName+".withperiod")
-	}
-
-	// Remove the newly created bucket.
-	if err = c.RemoveBucket(bucketName + ".withperiod"); err != nil {
-		t.Fatal("Error:", err, bucketName+".withperiod")
-	}
-}
-
-// Tests resumable put object multipart upload.
-func TestResumablePutObjectV2(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping functional tests for the short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	// Instantiate new minio client object.
-	c, err := minio.NewV2(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// generate 11MB
-	buf := make([]byte, 11*1024*1024)
-
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	objectName := bucketName + "-resumable"
-	reader := bytes.NewReader(buf)
-	n, err := c.PutObject(bucketName, objectName, reader, "application/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName, objectName)
-	}
-	if n != int64(len(buf)) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
-	}
-
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests get object ReaderSeeker interface methods.
-func TestGetObjectReadSeekFunctionalV2(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 := minio.NewV2(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Generate data more than 32K
-	buf := make([]byte, rand.Intn(1<<20)+32*1024)
-
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Save the data
-	objectName := randString(60, rand.NewSource(time.Now().UnixNano()))
-	n, err := c.PutObject(bucketName, objectName, bytes.NewReader(buf), "binary/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName, objectName)
-	}
-
-	if n != int64(len(buf)) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
-	}
-
-	// Read the data back
-	r, err := c.GetObject(bucketName, objectName)
-	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)
-	}
-
-	offset := int64(2048)
-	n, err = r.Seek(offset, 0)
-	if err != nil {
-		t.Fatal("Error:", err, offset)
-	}
-	if n != offset {
-		t.Fatalf("Error: number of bytes seeked does not match, want %v, got %v\n",
-			offset, n)
-	}
-	n, err = r.Seek(0, 1)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != offset {
-		t.Fatalf("Error: number of current seek does not match, want %v, got %v\n",
-			offset, n)
-	}
-	_, err = r.Seek(offset, 2)
-	if err == nil {
-		t.Fatal("Error: seek on positive offset for whence '2' should error out")
-	}
-	n, err = r.Seek(-offset, 2)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != 0 {
-		t.Fatalf("Error: number of bytes seeked back does not match, want 0, got %v\n", n)
-	}
-	var buffer bytes.Buffer
-	if _, err = io.CopyN(&buffer, r, st.Size); err != nil {
-		t.Fatal("Error:", err)
-	}
-	if !bytes.Equal(buf, buffer.Bytes()) {
-		t.Fatal("Error: Incorrect read bytes v/s original buffer.")
-	}
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests get object ReaderAt interface methods.
-func TestGetObjectReadAtFunctionalV2(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping functional tests for the short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	// Instantiate new minio client object.
-	c, err := minio.NewV2(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Generate data more than 32K
-	buf := make([]byte, rand.Intn(1<<20)+32*1024)
-
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Save the data
-	objectName := randString(60, rand.NewSource(time.Now().UnixNano()))
-	n, err := c.PutObject(bucketName, objectName, bytes.NewReader(buf), "binary/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName, objectName)
-	}
-
-	if n != int64(len(buf)) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
-	}
-
-	// Read the data back
-	r, err := c.GetObject(bucketName, objectName)
-	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)
-	}
-
-	offset := int64(2048)
-
-	// Read directly
-	buf2 := make([]byte, 512)
-	buf3 := make([]byte, 512)
-	buf4 := make([]byte, 512)
-
-	m, err := r.ReadAt(buf2, offset)
-	if err != nil {
-		t.Fatal("Error:", err, st.Size, len(buf2), offset)
-	}
-	if m != len(buf2) {
-		t.Fatalf("Error: ReadAt read shorter bytes before reaching EOF, want %v, got %v\n", m, len(buf2))
-	}
-	if !bytes.Equal(buf2, buf[offset:offset+512]) {
-		t.Fatal("Error: Incorrect read between two ReadAt from same offset.")
-	}
-	offset += 512
-	m, err = r.ReadAt(buf3, offset)
-	if err != nil {
-		t.Fatal("Error:", err, st.Size, len(buf3), offset)
-	}
-	if m != len(buf3) {
-		t.Fatalf("Error: ReadAt read shorter bytes before reaching EOF, want %v, got %v\n", m, len(buf3))
-	}
-	if !bytes.Equal(buf3, buf[offset:offset+512]) {
-		t.Fatal("Error: Incorrect read between two ReadAt from same offset.")
-	}
-	offset += 512
-	m, err = r.ReadAt(buf4, offset)
-	if err != nil {
-		t.Fatal("Error:", err, st.Size, len(buf4), offset)
-	}
-	if m != len(buf4) {
-		t.Fatalf("Error: ReadAt read shorter bytes before reaching EOF, want %v, got %v\n", m, len(buf4))
-	}
-	if !bytes.Equal(buf4, buf[offset:offset+512]) {
-		t.Fatal("Error: Incorrect read between two ReadAt from same offset.")
-	}
-
-	buf5 := make([]byte, n)
-	// Read the whole object.
-	m, err = r.ReadAt(buf5, 0)
-	if err != nil {
-		if err != io.EOF {
-			t.Fatal("Error:", err, len(buf5))
-		}
-	}
-	if m != len(buf5) {
-		t.Fatalf("Error: ReadAt read shorter bytes before reaching EOF, want %v, got %v\n", m, len(buf5))
-	}
-	if !bytes.Equal(buf, buf5) {
-		t.Fatal("Error: Incorrect data read in GetObject, than what was previously upoaded.")
-	}
-
-	buf6 := make([]byte, n+1)
-	// Read the whole object and beyond.
-	_, err = r.ReadAt(buf6, 0)
-	if err != nil {
-		if err != io.EOF {
-			t.Fatal("Error:", err, len(buf6))
-		}
-	}
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests comprehensive list of all methods.
-func TestFunctionalV2(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping functional tests for the short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	c, err := minio.NewV2(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Enable to debug
-	// 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()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Generate a random file name.
-	fileName := randString(60, rand.NewSource(time.Now().UnixNano()))
-	file, err := os.Create(fileName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	for i := 0; i < 3; i++ {
-		buf := make([]byte, rand.Intn(1<<19))
-		_, err = file.Write(buf)
-		if err != nil {
-			t.Fatal("Error:", err)
-		}
-	}
-	file.Close()
-
-	// Verify if bucket exits and you have access.
-	err = c.BucketExists(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Make the bucket 'public read/write'.
-	err = c.SetBucketACL(bucketName, "public-read-write")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Get the previously set acl.
-	acl, err := c.GetBucketACL(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// ACL must be 'public read/write'.
-	if acl != minio.BucketACL("public-read-write") {
-		t.Fatal("Error:", acl)
-	}
-
-	// List all buckets.
-	buckets, err := c.ListBuckets()
-	if len(buckets) == 0 {
-		t.Fatal("Error: list buckets cannot be empty", buckets)
-	}
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Verify if previously created bucket is listed in list buckets.
-	bucketFound := false
-	for _, bucket := range buckets {
-		if bucket.Name == bucketName {
-			bucketFound = true
-		}
-	}
-
-	// If bucket not found error out.
-	if !bucketFound {
-		t.Fatal("Error: bucket ", bucketName, "not found")
-	}
-
-	objectName := bucketName + "unique"
-
-	// Generate data
-	buf := make([]byte, rand.Intn(1<<19))
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	n, err := c.PutObject(bucketName, objectName, bytes.NewReader(buf), "")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if n != int64(len(buf)) {
-		t.Fatal("Error: bad length ", n, len(buf))
-	}
-
-	n, err = c.PutObject(bucketName, objectName+"-nolength", bytes.NewReader(buf), "binary/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName, objectName+"-nolength")
-	}
-
-	if n != int64(len(buf)) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
-	}
-
-	// Instantiate a done channel to close all listing.
-	doneCh := make(chan struct{})
-	defer close(doneCh)
-
-	objFound := false
-	isRecursive := true // Recursive is true.
-	for obj := range c.ListObjects(bucketName, objectName, isRecursive, doneCh) {
-		if obj.Key == objectName {
-			objFound = true
-			break
-		}
-	}
-	if !objFound {
-		t.Fatal("Error: object " + objectName + " not found.")
-	}
-
-	incompObjNotFound := true
-	for objIncompl := range c.ListIncompleteUploads(bucketName, objectName, isRecursive, doneCh) {
-		if objIncompl.Key != "" {
-			incompObjNotFound = false
-			break
-		}
-	}
-	if !incompObjNotFound {
-		t.Fatal("Error: unexpected dangling incomplete upload found.")
-	}
-
-	newReader, err := c.GetObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	newReadBytes, err := ioutil.ReadAll(newReader)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	if !bytes.Equal(newReadBytes, buf) {
-		t.Fatal("Error: bytes mismatch.")
-	}
-
-	err = c.FGetObject(bucketName, objectName, fileName+"-f")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	// Generate presigned GET object url.
-	presignedGetURL, err := c.PresignedGetObject(bucketName, objectName, 3600*time.Second, nil)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	// Verify if presigned url works.
-	resp, err := http.Get(presignedGetURL)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if resp.StatusCode != http.StatusOK {
-		t.Fatal("Error: ", resp.Status)
-	}
-	newPresignedBytes, err := ioutil.ReadAll(resp.Body)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if !bytes.Equal(newPresignedBytes, buf) {
-		t.Fatal("Error: bytes mismatch.")
-	}
-
-	// Set request parameters.
-	reqParams := make(url.Values)
-	reqParams.Set("response-content-disposition", "attachment; filename=\"test.txt\"")
-	// Generate presigned GET object url.
-	presignedGetURL, err = c.PresignedGetObject(bucketName, objectName, 3600*time.Second, reqParams)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	// Verify if presigned url works.
-	resp, err = http.Get(presignedGetURL)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if resp.StatusCode != http.StatusOK {
-		t.Fatal("Error: ", resp.Status)
-	}
-	newPresignedBytes, err = ioutil.ReadAll(resp.Body)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if !bytes.Equal(newPresignedBytes, buf) {
-		t.Fatal("Error: bytes mismatch for presigned GET url.")
-	}
-	// Verify content disposition.
-	if resp.Header.Get("Content-Disposition") != "attachment; filename=\"test.txt\"" {
-		t.Fatalf("Error: wrong Content-Disposition received %s", resp.Header.Get("Content-Disposition"))
-	}
-
-	presignedPutURL, err := c.PresignedPutObject(bucketName, objectName+"-presigned", 3600*time.Second)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	buf = make([]byte, rand.Intn(1<<20))
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	req, err := http.NewRequest("PUT", presignedPutURL, bytes.NewReader(buf))
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	httpClient := &http.Client{}
-	resp, err = httpClient.Do(req)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	newReader, err = c.GetObject(bucketName, objectName+"-presigned")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	newReadBytes, err = ioutil.ReadAll(newReader)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	if !bytes.Equal(newReadBytes, buf) {
-		t.Fatal("Error: bytes mismatch.")
-	}
-
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveObject(bucketName, objectName+"-f")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveObject(bucketName, objectName+"-nolength")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveObject(bucketName, objectName+"-presigned")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	err = c.RemoveBucket(bucketName)
-	if err == nil {
-		t.Fatal("Error:")
-	}
-	if err.Error() != "The specified bucket does not exist" {
-		t.Fatal("Error: ", err)
-	}
-	if err = os.Remove(fileName); err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if err = os.Remove(fileName + "-f"); err != nil {
-		t.Fatal("Error: ", err)
-	}
-}
diff --git a/vendor/github.com/minio/minio-go/api_functional_v4_test.go b/vendor/github.com/minio/minio-go/api_functional_v4_test.go
deleted file mode 100644
index 583ab79b9..000000000
--- a/vendor/github.com/minio/minio-go/api_functional_v4_test.go
+++ /dev/null
@@ -1,1101 +0,0 @@
-/*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 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_test
-
-import (
-	"bytes"
-	crand "crypto/rand"
-	"errors"
-	"io"
-	"io/ioutil"
-	"math/rand"
-	"net/http"
-	"net/url"
-	"os"
-	"testing"
-	"time"
-
-	"github.com/minio/minio-go"
-)
-
-const letterBytes = "abcdefghijklmnopqrstuvwxyz01234569"
-const (
-	letterIdxBits = 6                    // 6 bits to represent a letter index
-	letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
-	letterIdxMax  = 63 / letterIdxBits   // # of letter indices fitting in 63 bits
-)
-
-func randString(n int, src rand.Source) string {
-	b := make([]byte, n)
-	// A rand.Int63() generates 63 random bits, enough for letterIdxMax letters!
-	for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; {
-		if remain == 0 {
-			cache, remain = src.Int63(), letterIdxMax
-		}
-		if idx := int(cache & letterIdxMask); idx < len(letterBytes) {
-			b[i] = letterBytes[idx]
-			i--
-		}
-		cache >>= letterIdxBits
-		remain--
-	}
-	return string(b[0:30])
-}
-
-// Tests bucket re-create errors.
-func TestMakeBucketError(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 := minio.New(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket in 'eu-central-1'.
-	if err = c.MakeBucket(bucketName, "private", "eu-central-1"); err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-	if err = c.MakeBucket(bucketName, "private", "eu-central-1"); err == nil {
-		t.Fatal("Error: make bucket should should fail for", bucketName)
-	}
-	// Verify valid error response from server.
-	if minio.ToErrorResponse(err).Code != "BucketAlreadyExists" &&
-		minio.ToErrorResponse(err).Code != "BucketAlreadyOwnedByYou" {
-		t.Fatal("Error: Invalid error returned by server", err)
-	}
-	if err = c.RemoveBucket(bucketName); err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-}
-
-// Tests various bucket supported formats.
-func TestMakeBucketRegions(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 := minio.New(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket in 'eu-central-1'.
-	if err = c.MakeBucket(bucketName, "private", "eu-central-1"); err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	if err = c.RemoveBucket(bucketName); err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Make a new bucket with '.' in its name, in 'us-west-2'. This
-	// request is internally staged into a path style instead of
-	// virtual host style.
-	if err = c.MakeBucket(bucketName+".withperiod", "private", "us-west-2"); err != nil {
-		t.Fatal("Error:", err, bucketName+".withperiod")
-	}
-
-	// Remove the newly created bucket.
-	if err = c.RemoveBucket(bucketName + ".withperiod"); err != nil {
-		t.Fatal("Error:", err, bucketName+".withperiod")
-	}
-}
-
-// Test get object reader to not throw error on being closed twice.
-func TestGetObjectClosedTwice(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 := minio.New(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Generate data more than 32K
-	buf := make([]byte, rand.Intn(1<<20)+32*1024)
-
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Save the data
-	objectName := randString(60, rand.NewSource(time.Now().UnixNano()))
-	n, err := c.PutObject(bucketName, objectName, bytes.NewReader(buf), "binary/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName, objectName)
-	}
-
-	if n != int64(len(buf)) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
-	}
-
-	// Read the data back
-	r, err := c.GetObject(bucketName, objectName)
-	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 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.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests removing partially uploaded objects.
-func TestRemovePartiallyUploaded(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping function tests for short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	// Instantiate new minio client object.
-	c, err := minio.New(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Set user agent.
-	c.SetAppInfo("Minio-go-FunctionalTest", "0.1.0")
-
-	// Enable tracing, write to stdout.
-	// c.TraceOn(os.Stderr)
-
-	// Generate a new random bucket name.
-	bucketName := randString(60, rand.NewSource(time.Now().UnixNano()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	reader, writer := io.Pipe()
-	go func() {
-		i := 0
-		for i < 25 {
-			_, err = io.CopyN(writer, crand.Reader, 128*1024)
-			if err != nil {
-				t.Fatal("Error:", err, bucketName)
-			}
-			i++
-		}
-		err := writer.CloseWithError(errors.New("Proactively closed to be verified later."))
-		if err != nil {
-			t.Fatal("Error:", err)
-		}
-	}()
-
-	objectName := bucketName + "-resumable"
-	_, err = c.PutObject(bucketName, objectName, reader, "application/octet-stream")
-	if err == nil {
-		t.Fatal("Error: PutObject should fail.")
-	}
-	if err.Error() != "Proactively closed to be verified later." {
-		t.Fatal("Error:", err)
-	}
-	err = c.RemoveIncompleteUpload(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests resumable put object cloud to cloud.
-func TestResumbalePutObject(t *testing.T) {
-	// By passing 'go test -short' skips these tests.
-	if testing.Short() {
-		t.Skip("skipping functional tests for the short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	// Instantiate new minio client object.
-	c, err := minio.New(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Set user agent.
-	c.SetAppInfo("Minio-go-FunctionalTest", "0.1.0")
-
-	// Enable tracing, write to stdout.
-	// c.TraceOn(os.Stderr)
-
-	// Generate a new random bucket name.
-	bucketName := randString(60, rand.NewSource(time.Now().UnixNano()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Create a temporary file.
-	file, err := ioutil.TempFile(os.TempDir(), "resumable")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Copy 11MiB worth of random data.
-	n, err := io.CopyN(file, crand.Reader, 11*1024*1024)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != int64(11*1024*1024) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", 11*1024*1024, n)
-	}
-
-	// Close the file pro-actively for windows.
-	if err = file.Close(); err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// New object name.
-	objectName := bucketName + "-resumable"
-
-	// Upload the file.
-	n, err = c.FPutObject(bucketName, objectName, file.Name(), "application/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != int64(11*1024*1024) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", 11*1024*1024, n)
-	}
-
-	// Get the uploaded object.
-	reader, err := c.GetObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Upload now cloud to cloud.
-	n, err = c.PutObject(bucketName, objectName+"-put", reader, "application/octest-stream")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Get object info.
-	objInfo, err := reader.Stat()
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != objInfo.Size {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", objInfo.Size, n)
-	}
-
-	// Remove all temp files, objects and bucket.
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	err = c.RemoveObject(bucketName, objectName+"-put")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	err = os.Remove(file.Name())
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests resumable file based put object multipart upload.
-func TestResumableFPutObject(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping functional tests for the short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	// Instantiate new minio client object.
-	c, err := minio.New(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Set user agent.
-	c.SetAppInfo("Minio-go-FunctionalTest", "0.1.0")
-
-	// Enable tracing, write to stdout.
-	// c.TraceOn(os.Stderr)
-
-	// Generate a new random bucket name.
-	bucketName := randString(60, rand.NewSource(time.Now().UnixNano()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	file, err := ioutil.TempFile(os.TempDir(), "resumable")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	n, err := io.CopyN(file, crand.Reader, 11*1024*1024)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != int64(11*1024*1024) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", 11*1024*1024, n)
-	}
-
-	// Close the file pro-actively for windows.
-	err = file.Close()
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	objectName := bucketName + "-resumable"
-
-	n, err = c.FPutObject(bucketName, objectName, file.Name(), "application/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != int64(11*1024*1024) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", 11*1024*1024, n)
-	}
-
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	err = os.Remove(file.Name())
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests resumable put object multipart upload.
-func TestResumablePutObject(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping functional tests for the short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	// Instantiate new minio client object.
-	c, err := minio.New(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Generate 11MB
-	buf := make([]byte, 11*1024*1024)
-
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	objectName := bucketName + "-resumable"
-	reader := bytes.NewReader(buf)
-	n, err := c.PutObject(bucketName, objectName, reader, "application/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName, objectName)
-	}
-	if n != int64(len(buf)) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
-	}
-
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests get object ReaderSeeker interface methods.
-func TestGetObjectReadSeekFunctional(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 := minio.New(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Generate data more than 32K
-	buf := make([]byte, rand.Intn(1<<20)+32*1024)
-
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Save the data
-	objectName := randString(60, rand.NewSource(time.Now().UnixNano()))
-	n, err := c.PutObject(bucketName, objectName, bytes.NewReader(buf), "binary/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName, objectName)
-	}
-
-	if n != int64(len(buf)) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
-	}
-
-	// Read the data back
-	r, err := c.GetObject(bucketName, objectName)
-	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)
-	}
-
-	offset := int64(2048)
-	n, err = r.Seek(offset, 0)
-	if err != nil {
-		t.Fatal("Error:", err, offset)
-	}
-	if n != offset {
-		t.Fatalf("Error: number of bytes seeked does not match, want %v, got %v\n",
-			offset, n)
-	}
-	n, err = r.Seek(0, 1)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != offset {
-		t.Fatalf("Error: number of current seek does not match, want %v, got %v\n",
-			offset, n)
-	}
-	_, err = r.Seek(offset, 2)
-	if err == nil {
-		t.Fatal("Error: seek on positive offset for whence '2' should error out")
-	}
-	n, err = r.Seek(-offset, 2)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if n != 0 {
-		t.Fatalf("Error: number of bytes seeked back does not match, want 0, got %v\n", n)
-	}
-	var buffer bytes.Buffer
-	if _, err = io.CopyN(&buffer, r, st.Size); err != nil {
-		t.Fatal("Error:", err)
-	}
-	if !bytes.Equal(buf, buffer.Bytes()) {
-		t.Fatal("Error: Incorrect read bytes v/s original buffer.")
-	}
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests get object ReaderAt interface methods.
-func TestGetObjectReadAtFunctional(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping functional tests for the short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	// Instantiate new minio client object.
-	c, err := minio.New(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	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()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Generate data more than 32K
-	buf := make([]byte, rand.Intn(1<<20)+32*1024)
-
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Save the data
-	objectName := randString(60, rand.NewSource(time.Now().UnixNano()))
-	n, err := c.PutObject(bucketName, objectName, bytes.NewReader(buf), "binary/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName, objectName)
-	}
-
-	if n != int64(len(buf)) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
-	}
-
-	// read the data back
-	r, err := c.GetObject(bucketName, objectName)
-	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)
-	}
-
-	offset := int64(2048)
-
-	// read directly
-	buf2 := make([]byte, 512)
-	buf3 := make([]byte, 512)
-	buf4 := make([]byte, 512)
-
-	m, err := r.ReadAt(buf2, offset)
-	if err != nil {
-		t.Fatal("Error:", err, st.Size, len(buf2), offset)
-	}
-	if m != len(buf2) {
-		t.Fatalf("Error: ReadAt read shorter bytes before reaching EOF, want %v, got %v\n", m, len(buf2))
-	}
-	if !bytes.Equal(buf2, buf[offset:offset+512]) {
-		t.Fatal("Error: Incorrect read between two ReadAt from same offset.")
-	}
-	offset += 512
-	m, err = r.ReadAt(buf3, offset)
-	if err != nil {
-		t.Fatal("Error:", err, st.Size, len(buf3), offset)
-	}
-	if m != len(buf3) {
-		t.Fatalf("Error: ReadAt read shorter bytes before reaching EOF, want %v, got %v\n", m, len(buf3))
-	}
-	if !bytes.Equal(buf3, buf[offset:offset+512]) {
-		t.Fatal("Error: Incorrect read between two ReadAt from same offset.")
-	}
-	offset += 512
-	m, err = r.ReadAt(buf4, offset)
-	if err != nil {
-		t.Fatal("Error:", err, st.Size, len(buf4), offset)
-	}
-	if m != len(buf4) {
-		t.Fatalf("Error: ReadAt read shorter bytes before reaching EOF, want %v, got %v\n", m, len(buf4))
-	}
-	if !bytes.Equal(buf4, buf[offset:offset+512]) {
-		t.Fatal("Error: Incorrect read between two ReadAt from same offset.")
-	}
-
-	buf5 := make([]byte, n)
-	// Read the whole object.
-	m, err = r.ReadAt(buf5, 0)
-	if err != nil {
-		if err != io.EOF {
-			t.Fatal("Error:", err, len(buf5))
-		}
-	}
-	if m != len(buf5) {
-		t.Fatalf("Error: ReadAt read shorter bytes before reaching EOF, want %v, got %v\n", m, len(buf5))
-	}
-	if !bytes.Equal(buf, buf5) {
-		t.Fatal("Error: Incorrect data read in GetObject, than what was previously upoaded.")
-	}
-
-	buf6 := make([]byte, n+1)
-	// Read the whole object and beyond.
-	_, err = r.ReadAt(buf6, 0)
-	if err != nil {
-		if err != io.EOF {
-			t.Fatal("Error:", err, len(buf6))
-		}
-	}
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-}
-
-// Tests comprehensive list of all methods.
-func TestFunctional(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping functional tests for the short runs")
-	}
-
-	// Seed random based on current time.
-	rand.Seed(time.Now().Unix())
-
-	c, err := minio.New(
-		"s3.amazonaws.com",
-		os.Getenv("ACCESS_KEY"),
-		os.Getenv("SECRET_KEY"),
-		false,
-	)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Enable to debug
-	// 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()))
-
-	// Make a new bucket.
-	err = c.MakeBucket(bucketName, "private", "us-east-1")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Generate a random file name.
-	fileName := randString(60, rand.NewSource(time.Now().UnixNano()))
-	file, err := os.Create(fileName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	for i := 0; i < 3; i++ {
-		buf := make([]byte, rand.Intn(1<<19))
-		_, err = file.Write(buf)
-		if err != nil {
-			t.Fatal("Error:", err)
-		}
-	}
-	file.Close()
-
-	// Verify if bucket exits and you have access.
-	err = c.BucketExists(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err, bucketName)
-	}
-
-	// Make the bucket 'public read/write'.
-	err = c.SetBucketACL(bucketName, "public-read-write")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Get the previously set acl.
-	acl, err := c.GetBucketACL(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// ACL must be 'public read/write'.
-	if acl != minio.BucketACL("public-read-write") {
-		t.Fatal("Error:", acl)
-	}
-
-	// List all buckets.
-	buckets, err := c.ListBuckets()
-	if len(buckets) == 0 {
-		t.Fatal("Error: list buckets cannot be empty", buckets)
-	}
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-
-	// Verify if previously created bucket is listed in list buckets.
-	bucketFound := false
-	for _, bucket := range buckets {
-		if bucket.Name == bucketName {
-			bucketFound = true
-		}
-	}
-
-	// If bucket not found error out.
-	if !bucketFound {
-		t.Fatal("Error: bucket ", bucketName, "not found")
-	}
-
-	objectName := bucketName + "unique"
-
-	// Generate data
-	buf := make([]byte, rand.Intn(1<<19))
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	n, err := c.PutObject(bucketName, objectName, bytes.NewReader(buf), "")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if n != int64(len(buf)) {
-		t.Fatal("Error: bad length ", n, len(buf))
-	}
-
-	n, err = c.PutObject(bucketName, objectName+"-nolength", bytes.NewReader(buf), "binary/octet-stream")
-	if err != nil {
-		t.Fatal("Error:", err, bucketName, objectName+"-nolength")
-	}
-
-	if n != int64(len(buf)) {
-		t.Fatalf("Error: number of bytes does not match, want %v, got %v\n", len(buf), n)
-	}
-
-	// Instantiate a done channel to close all listing.
-	doneCh := make(chan struct{})
-	defer close(doneCh)
-
-	objFound := false
-	isRecursive := true // Recursive is true.
-	for obj := range c.ListObjects(bucketName, objectName, isRecursive, doneCh) {
-		if obj.Key == objectName {
-			objFound = true
-			break
-		}
-	}
-	if !objFound {
-		t.Fatal("Error: object " + objectName + " not found.")
-	}
-
-	incompObjNotFound := true
-	for objIncompl := range c.ListIncompleteUploads(bucketName, objectName, isRecursive, doneCh) {
-		if objIncompl.Key != "" {
-			incompObjNotFound = false
-			break
-		}
-	}
-	if !incompObjNotFound {
-		t.Fatal("Error: unexpected dangling incomplete upload found.")
-	}
-
-	newReader, err := c.GetObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	newReadBytes, err := ioutil.ReadAll(newReader)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	if !bytes.Equal(newReadBytes, buf) {
-		t.Fatal("Error: bytes mismatch.")
-	}
-
-	err = c.FGetObject(bucketName, objectName, fileName+"-f")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	// Generate presigned GET object url.
-	presignedGetURL, err := c.PresignedGetObject(bucketName, objectName, 3600*time.Second, nil)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	// Verify if presigned url works.
-	resp, err := http.Get(presignedGetURL)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if resp.StatusCode != http.StatusOK {
-		t.Fatal("Error: ", resp.Status)
-	}
-	newPresignedBytes, err := ioutil.ReadAll(resp.Body)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if !bytes.Equal(newPresignedBytes, buf) {
-		t.Fatal("Error: bytes mismatch.")
-	}
-
-	// Set request parameters.
-	reqParams := make(url.Values)
-	reqParams.Set("response-content-disposition", "attachment; filename=\"test.txt\"")
-	presignedGetURL, err = c.PresignedGetObject(bucketName, objectName, 3600*time.Second, reqParams)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	// Verify if presigned url works.
-	resp, err = http.Get(presignedGetURL)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if resp.StatusCode != http.StatusOK {
-		t.Fatal("Error: ", resp.Status)
-	}
-	newPresignedBytes, err = ioutil.ReadAll(resp.Body)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if !bytes.Equal(newPresignedBytes, buf) {
-		t.Fatal("Error: bytes mismatch for presigned GET URL.")
-	}
-	if resp.Header.Get("Content-Disposition") != "attachment; filename=\"test.txt\"" {
-		t.Fatalf("Error: wrong Content-Disposition received %s", resp.Header.Get("Content-Disposition"))
-	}
-
-	presignedPutURL, err := c.PresignedPutObject(bucketName, objectName+"-presigned", 3600*time.Second)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	buf = make([]byte, rand.Intn(1<<20))
-	_, err = io.ReadFull(crand.Reader, buf)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	req, err := http.NewRequest("PUT", presignedPutURL, bytes.NewReader(buf))
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	httpClient := &http.Client{}
-	resp, err = httpClient.Do(req)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	newReader, err = c.GetObject(bucketName, objectName+"-presigned")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	newReadBytes, err = ioutil.ReadAll(newReader)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-
-	if !bytes.Equal(newReadBytes, buf) {
-		t.Fatal("Error: bytes mismatch.")
-	}
-
-	err = c.RemoveObject(bucketName, objectName)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveObject(bucketName, objectName+"-f")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveObject(bucketName, objectName+"-nolength")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveObject(bucketName, objectName+"-presigned")
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	err = c.RemoveBucket(bucketName)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	err = c.RemoveBucket(bucketName)
-	if err == nil {
-		t.Fatal("Error:")
-	}
-	if err.Error() != "The specified bucket does not exist" {
-		t.Fatal("Error: ", err)
-	}
-	if err = os.Remove(fileName); err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if err = os.Remove(fileName + "-f"); err != nil {
-		t.Fatal("Error: ", err)
-	}
-}
diff --git a/vendor/github.com/minio/minio-go/api_unit_test.go b/vendor/github.com/minio/minio-go/api_unit_test.go
deleted file mode 100644
index cbae12fe2..000000000
--- a/vendor/github.com/minio/minio-go/api_unit_test.go
+++ /dev/null
@@ -1,599 +0,0 @@
-/*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 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 (
-	"bytes"
-	"fmt"
-	"io"
-	"io/ioutil"
-	"net/http"
-	"net/url"
-	"os"
-	"strings"
-	"testing"
-)
-
-type customReader struct{}
-
-func (c *customReader) Read(p []byte) (n int, err error) {
-	return 0, nil
-}
-
-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 readRequest)
-	// Create response channel.
-	resCh := make(chan readResponse)
-	// Create done channel.
-	doneCh := make(chan struct{})
-	// objectInfo.
-	objectInfo := ObjectInfo{Size: 10}
-	objectReader := newObject(reqCh, resCh, doneCh, objectInfo)
-	defer objectReader.Close()
-
-	size, err = getReaderSize(objectReader)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if size != int64(10) {
-		t.Fatalf("Reader length doesn't match got: %v, want: %v", size, 10)
-	}
-
-	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 valid hosts for location.
-func TestValidBucketLocation(t *testing.T) {
-	s3Hosts := []struct {
-		bucketLocation string
-		endpoint       string
-	}{
-		{"us-east-1", "s3.amazonaws.com"},
-		{"unknown", "s3.amazonaws.com"},
-		{"ap-southeast-1", "s3-ap-southeast-1.amazonaws.com"},
-	}
-	for _, s3Host := range s3Hosts {
-		endpoint := getS3Endpoint(s3Host.bucketLocation)
-		if endpoint != s3Host.endpoint {
-			t.Fatal("Error: invalid bucket location", endpoint)
-		}
-	}
-}
-
-// Tests valid bucket names.
-func TestBucketNames(t *testing.T) {
-	buckets := []struct {
-		name  string
-		valid error
-	}{
-		{".mybucket", ErrInvalidBucketName("Bucket name cannot start or end with a '.' dot.")},
-		{"mybucket.", ErrInvalidBucketName("Bucket name cannot start or end with a '.' dot.")},
-		{"mybucket-", ErrInvalidBucketName("Bucket name contains invalid characters.")},
-		{"my", ErrInvalidBucketName("Bucket name cannot be smaller than 3 characters.")},
-		{"", ErrInvalidBucketName("Bucket name cannot be empty.")},
-		{"my..bucket", ErrInvalidBucketName("Bucket name cannot have successive periods.")},
-		{"my.bucket.com", nil},
-		{"my-bucket", nil},
-		{"123my-bucket", nil},
-	}
-
-	for _, b := range buckets {
-		err := isValidBucketName(b.name)
-		if err != b.valid {
-			t.Fatal("Error:", err)
-		}
-	}
-}
-
-// Tests temp file.
-func TestTempFile(t *testing.T) {
-	tmpFile, err := newTempFile("testing")
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	fileName := tmpFile.Name()
-	// Closing temporary file purges the file.
-	err = tmpFile.Close()
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	st, err := os.Stat(fileName)
-	if err != nil && !os.IsNotExist(err) {
-		t.Fatal("Error:", err)
-	}
-	if err == nil && st != nil {
-		t.Fatal("Error: file should be deleted and should not exist.")
-	}
-}
-
-// Tests url encoding.
-func TestEncodeURL2Path(t *testing.T) {
-	type urlStrings struct {
-		objName        string
-		encodedObjName string
-	}
-
-	bucketName := "bucketName"
-	want := []urlStrings{
-		{
-			objName:        "本語",
-			encodedObjName: "%E6%9C%AC%E8%AA%9E",
-		},
-		{
-			objName:        "本語.1",
-			encodedObjName: "%E6%9C%AC%E8%AA%9E.1",
-		},
-		{
-			objName:        ">123>3123123",
-			encodedObjName: "%3E123%3E3123123",
-		},
-		{
-			objName:        "test 1 2.txt",
-			encodedObjName: "test%201%202.txt",
-		},
-		{
-			objName:        "test++ 1.txt",
-			encodedObjName: "test%2B%2B%201.txt",
-		},
-	}
-
-	for _, o := range want {
-		u, err := url.Parse(fmt.Sprintf("https://%s.s3.amazonaws.com/%s", bucketName, o.objName))
-		if err != nil {
-			t.Fatal("Error:", err)
-		}
-		urlPath := "/" + bucketName + "/" + o.encodedObjName
-		if urlPath != encodeURL2Path(u) {
-			t.Fatal("Error")
-		}
-	}
-}
-
-// Tests error response structure.
-func TestErrorResponse(t *testing.T) {
-	var err error
-	err = ErrorResponse{
-		Code: "Testing",
-	}
-	errResp := ToErrorResponse(err)
-	if errResp.Code != "Testing" {
-		t.Fatal("Type conversion failed, we have an empty struct.")
-	}
-
-	// Test http response decoding.
-	var httpResponse *http.Response
-	// Set empty variables
-	httpResponse = nil
-	var bucketName, objectName string
-
-	// Should fail with invalid argument.
-	err = httpRespToErrorResponse(httpResponse, bucketName, objectName)
-	errResp = ToErrorResponse(err)
-	if errResp.Code != "InvalidArgument" {
-		t.Fatal("Empty response input should return invalid argument.")
-	}
-}
-
-// Tests signature calculation.
-func TestSignatureCalculation(t *testing.T) {
-	req, err := http.NewRequest("GET", "https://s3.amazonaws.com", nil)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	req = signV4(*req, "", "", "us-east-1")
-	if req.Header.Get("Authorization") != "" {
-		t.Fatal("Error: anonymous credentials should not have Authorization header.")
-	}
-
-	req = preSignV4(*req, "", "", "us-east-1", 0)
-	if strings.Contains(req.URL.RawQuery, "X-Amz-Signature") {
-		t.Fatal("Error: anonymous credentials should not have Signature query resource.")
-	}
-
-	req = signV2(*req, "", "")
-	if req.Header.Get("Authorization") != "" {
-		t.Fatal("Error: anonymous credentials should not have Authorization header.")
-	}
-
-	req = preSignV2(*req, "", "", 0)
-	if strings.Contains(req.URL.RawQuery, "Signature") {
-		t.Fatal("Error: anonymous credentials should not have Signature query resource.")
-	}
-
-	req = signV4(*req, "ACCESS-KEY", "SECRET-KEY", "us-east-1")
-	if req.Header.Get("Authorization") == "" {
-		t.Fatal("Error: normal credentials should have Authorization header.")
-	}
-
-	req = preSignV4(*req, "ACCESS-KEY", "SECRET-KEY", "us-east-1", 0)
-	if !strings.Contains(req.URL.RawQuery, "X-Amz-Signature") {
-		t.Fatal("Error: normal credentials should have Signature query resource.")
-	}
-
-	req = signV2(*req, "ACCESS-KEY", "SECRET-KEY")
-	if req.Header.Get("Authorization") == "" {
-		t.Fatal("Error: normal credentials should have Authorization header.")
-	}
-
-	req = preSignV2(*req, "ACCESS-KEY", "SECRET-KEY", 0)
-	if !strings.Contains(req.URL.RawQuery, "Signature") {
-		t.Fatal("Error: normal credentials should not have Signature query resource.")
-	}
-}
-
-// Tests signature type.
-func TestSignatureType(t *testing.T) {
-	clnt := Client{}
-	if !clnt.signature.isV4() {
-		t.Fatal("Error")
-	}
-	clnt.signature = SignatureV2
-	if !clnt.signature.isV2() {
-		t.Fatal("Error")
-	}
-	if clnt.signature.isV4() {
-		t.Fatal("Error")
-	}
-	clnt.signature = SignatureV4
-	if !clnt.signature.isV4() {
-		t.Fatal("Error")
-	}
-}
-
-// Tests bucket acl types.
-func TestBucketACLTypes(t *testing.T) {
-	want := map[string]bool{
-		"private":            true,
-		"public-read":        true,
-		"public-read-write":  true,
-		"authenticated-read": true,
-		"invalid":            false,
-	}
-	for acl, ok := range want {
-		if BucketACL(acl).isValidBucketACL() != ok {
-			t.Fatal("Error")
-		}
-	}
-}
-
-// Tests optimal part size.
-func TestPartSize(t *testing.T) {
-	totalPartsCount, partSize, lastPartSize, err := optimalPartInfo(5000000000000000000)
-	if err == nil {
-		t.Fatal("Error: should fail")
-	}
-	totalPartsCount, partSize, lastPartSize, err = optimalPartInfo(5497558138880)
-	if err != nil {
-		t.Fatal("Error: ", err)
-	}
-	if totalPartsCount != 9987 {
-		t.Fatalf("Error: expecting total parts count of 9987: got %v instead", totalPartsCount)
-	}
-	if partSize != 550502400 {
-		t.Fatalf("Error: expecting part size of 550502400: got %v instead", partSize)
-	}
-	if lastPartSize != 241172480 {
-		t.Fatalf("Error: expecting last part size of 241172480: got %v instead", lastPartSize)
-	}
-	totalPartsCount, partSize, lastPartSize, err = optimalPartInfo(5000000000)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if partSize != minPartSize {
-		t.Fatalf("Error: expecting part size of %v: got %v instead", minPartSize, partSize)
-	}
-	totalPartsCount, partSize, lastPartSize, err = optimalPartInfo(-1)
-	if err != nil {
-		t.Fatal("Error:", err)
-	}
-	if totalPartsCount != 9987 {
-		t.Fatalf("Error: expecting total parts count of 9987: got %v instead", totalPartsCount)
-	}
-	if partSize != 550502400 {
-		t.Fatalf("Error: expecting part size of 550502400: got %v instead", partSize)
-	}
-	if lastPartSize != 241172480 {
-		t.Fatalf("Error: expecting last part size of 241172480: got %v instead", lastPartSize)
-	}
-}
-
-// Tests query values to URL encoding.
-func TestQueryURLEncoding(t *testing.T) {
-	urlValues := make(url.Values)
-	urlValues.Set("prefix", "test@1123")
-	urlValues.Set("delimiter", "/")
-	urlValues.Set("marker", "%%%@$$$")
-
-	queryStr := queryEncode(urlValues)
-	if !strings.Contains(queryStr, "test%401123") {
-		t.Fatalf("Error: @ should be encoded as %s, invalid query string %s", "test%401123", queryStr)
-	}
-	if !strings.Contains(queryStr, "%25%25%25%40%24%24%24") {
-		t.Fatalf("Error: %s should be encoded as %s, invalid query string %s", "%%%@$$$", "%25%25%25%40%24%24%24", queryStr)
-	}
-}
-
-// Tests url encoding.
-func TestURLEncoding(t *testing.T) {
-	type urlStrings struct {
-		name        string
-		encodedName string
-	}
-
-	want := []urlStrings{
-		{
-			name:        "bigfile-1._%",
-			encodedName: "bigfile-1._%25",
-		},
-		{
-			name:        "本語",
-			encodedName: "%E6%9C%AC%E8%AA%9E",
-		},
-		{
-			name:        "本語.1",
-			encodedName: "%E6%9C%AC%E8%AA%9E.1",
-		},
-		{
-			name:        ">123>3123123",
-			encodedName: "%3E123%3E3123123",
-		},
-		{
-			name:        "test 1 2.txt",
-			encodedName: "test%201%202.txt",
-		},
-		{
-			name:        "test++ 1.txt",
-			encodedName: "test%2B%2B%201.txt",
-		},
-	}
-
-	for _, u := range want {
-		if u.encodedName != urlEncodePath(u.name) {
-			t.Fatal("Error")
-		}
-	}
-}
-
-// Tests constructing valid endpoint url.
-func TestGetEndpointURL(t *testing.T) {
-	if _, err := getEndpointURL("s3.amazonaws.com", false); err != nil {
-		t.Fatal("Error:", err)
-	}
-	if _, err := getEndpointURL("192.168.1.1", false); err != nil {
-		t.Fatal("Error:", err)
-	}
-	if _, err := getEndpointURL("13333.123123.-", false); err == nil {
-		t.Fatal("Error")
-	}
-	if _, err := getEndpointURL("s3.aamzza.-", false); err == nil {
-		t.Fatal("Error")
-	}
-	if _, err := getEndpointURL("s3.amazonaws.com:443", false); err == nil {
-		t.Fatal("Error")
-	}
-}
-
-// Tests valid ip address.
-func TestValidIPAddr(t *testing.T) {
-	type validIP struct {
-		ip    string
-		valid bool
-	}
-
-	want := []validIP{
-		{
-			ip:    "192.168.1.1",
-			valid: true,
-		},
-		{
-			ip:    "192.1.8",
-			valid: false,
-		},
-		{
-			ip:    "..192.",
-			valid: false,
-		},
-		{
-			ip:    "192.168.1.1.1",
-			valid: false,
-		},
-	}
-	for _, w := range want {
-		valid := isValidIP(w.ip)
-		if valid != w.valid {
-			t.Fatal("Error")
-		}
-	}
-}
-
-// Tests valid endpoint domain.
-func TestValidEndpointDomain(t *testing.T) {
-	type validEndpoint struct {
-		endpointDomain string
-		valid          bool
-	}
-
-	want := []validEndpoint{
-		{
-			endpointDomain: "s3.amazonaws.com",
-			valid:          true,
-		},
-		{
-			endpointDomain: "s3.amazonaws.com_",
-			valid:          false,
-		},
-		{
-			endpointDomain: "%$$$",
-			valid:          false,
-		},
-		{
-			endpointDomain: "s3.amz.test.com",
-			valid:          true,
-		},
-		{
-			endpointDomain: "s3.%%",
-			valid:          false,
-		},
-		{
-			endpointDomain: "localhost",
-			valid:          true,
-		},
-		{
-			endpointDomain: "-localhost",
-			valid:          false,
-		},
-		{
-			endpointDomain: "",
-			valid:          false,
-		},
-		{
-			endpointDomain: "\n \t",
-			valid:          false,
-		},
-		{
-			endpointDomain: "    ",
-			valid:          false,
-		},
-	}
-	for _, w := range want {
-		valid := isValidDomain(w.endpointDomain)
-		if valid != w.valid {
-			t.Fatal("Error:", w.endpointDomain)
-		}
-	}
-}
-
-// Tests valid endpoint url.
-func TestValidEndpointURL(t *testing.T) {
-	type validURL struct {
-		url   string
-		valid bool
-	}
-	want := []validURL{
-		{
-			url:   "https://s3.amazonaws.com",
-			valid: true,
-		},
-		{
-			url:   "https://s3.amazonaws.com/bucket/object",
-			valid: false,
-		},
-		{
-			url:   "192.168.1.1",
-			valid: false,
-		},
-	}
-	for _, w := range want {
-		u, err := url.Parse(w.url)
-		if err != nil {
-			t.Fatal("Error:", err)
-		}
-		valid := false
-		if err := isValidEndpointURL(u); err == nil {
-			valid = true
-		}
-		if valid != w.valid {
-			t.Fatal("Error")
-		}
-	}
-}
diff --git a/vendor/github.com/minio/minio-go/bucket-cache.go b/vendor/github.com/minio/minio-go/bucket-cache.go
index c0b4f0cb8..7111c8f41 100644
--- a/vendor/github.com/minio/minio-go/bucket-cache.go
+++ b/vendor/github.com/minio/minio-go/bucket-cache.go
@@ -20,7 +20,7 @@ import (
 	"encoding/hex"
 	"net/http"
 	"net/url"
-	"path/filepath"
+	"path"
 	"sync"
 )
 
@@ -90,7 +90,20 @@ func (c Client) getBucketLocation(bucketName string) (string, error) {
 	}
 	if resp != nil {
 		if resp.StatusCode != http.StatusOK {
-			return "", httpRespToErrorResponse(resp, bucketName, "")
+			err = httpRespToErrorResponse(resp, bucketName, "")
+			errResp := ToErrorResponse(err)
+			// AccessDenied without a signature mismatch code,
+			// usually means that the bucket policy has certain
+			// restrictions where some API operations are not
+			// allowed. Handle this case so that top level callers can
+			// interpret this easily and fall back if needed to a
+			// lower functionality call. Read each individual API
+			// specific code for such fallbacks.
+			if errResp.Code == "AccessDenied" && errResp.Message == "Access Denied" {
+				// In this case return as "us-east-1" and let the call fail.
+				return "us-east-1", nil
+			}
+			return "", err
 		}
 	}
 
@@ -127,7 +140,7 @@ func (c Client) getBucketLocationRequest(bucketName string) (*http.Request, erro
 
 	// Set get bucket location always as path style.
 	targetURL := c.endpointURL
-	targetURL.Path = filepath.Join(bucketName, "") + "/"
+	targetURL.Path = path.Join(bucketName, "") + "/"
 	targetURL.RawQuery = urlValues.Encode()
 
 	// Get a new HTTP request for the method.
diff --git a/vendor/github.com/minio/minio-go/hook-reader.go b/vendor/github.com/minio/minio-go/hook-reader.go
index 043425f23..bc9ece049 100644
--- a/vendor/github.com/minio/minio-go/hook-reader.go
+++ b/vendor/github.com/minio/minio-go/hook-reader.go
@@ -1,5 +1,5 @@
 /*
- * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015 Minio, Inc.
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,6 +27,22 @@ type hookReader struct {
 	hook   io.Reader
 }
 
+// Seek implements io.Seeker. Seeks source first, and if necessary
+// seeks hook if Seek method is appropriately found.
+func (hr *hookReader) Seek(offset int64, whence int) (n int64, err error) {
+	// Verify for source has embedded Seeker, use it.
+	sourceSeeker, ok := hr.source.(io.Seeker)
+	if ok {
+		return sourceSeeker.Seek(offset, whence)
+	}
+	// Verify if hook has embedded Seeker, use it.
+	hookSeeker, ok := hr.hook.(io.Seeker)
+	if ok {
+		return hookSeeker.Seek(offset, whence)
+	}
+	return n, nil
+}
+
 // Read implements io.Reader. Always reads from the source, the return
 // value 'n' number of bytes are reported through the hook. Returns
 // error for all non io.EOF conditions.
@@ -44,7 +60,7 @@ func (hr *hookReader) Read(b []byte) (n int, err error) {
 	return n, err
 }
 
-// newHook returns a io.Reader which implements hookReader that
+// newHook returns a io.ReadSeeker which implements hookReader that
 // reports the data read from the source to the hook.
 func newHook(source, hook io.Reader) io.Reader {
 	if hook == nil {
diff --git a/vendor/github.com/minio/minio-go/retry.go b/vendor/github.com/minio/minio-go/retry.go
new file mode 100644
index 000000000..73981ce47
--- /dev/null
+++ b/vendor/github.com/minio/minio-go/retry.go
@@ -0,0 +1,95 @@
+/*
+ * Minio Go Library for Amazon S3 Compatible Cloud Storage (C) 2015, 2016 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 (
+	"math/rand"
+	"net"
+	"time"
+)
+
+// MaxRetry is the maximum number of retries before stopping.
+var MaxRetry = 5
+
+// MaxJitter will randomize over the full exponential backoff time
+const MaxJitter = 1.0
+
+// NoJitter disables the use of jitter for randomizing the exponential backoff time
+const NoJitter = 0.0
+
+// newRetryTimer creates a timer with exponentially increasing delays
+// until the maximum retry attempts are reached.
+func newRetryTimer(maxRetry int, unit time.Duration, cap time.Duration, jitter float64) <-chan int {
+	attemptCh := make(chan int)
+
+	// Seed random function with current unix nano time.
+	rand.Seed(time.Now().UTC().UnixNano())
+
+	go func() {
+		defer close(attemptCh)
+		for i := 0; i < maxRetry; i++ {
+			attemptCh <- i + 1 // Attempts start from 1.
+			// Grow the interval at an exponential rate,
+			// starting at unit and capping at cap
+			time.Sleep(exponentialBackoffWait(unit, i, cap, jitter))
+		}
+	}()
+	return attemptCh
+}
+
+// isNetErrorRetryable - is network error retryable.
+func isNetErrorRetryable(err error) bool {
+	switch err.(type) {
+	case *net.DNSError, *net.OpError, net.UnknownNetworkError:
+		return true
+	}
+	return false
+}
+
+// computes the exponential backoff duration according to
+// https://www.awsarchitectureblog.com/2015/03/backoff.html
+func exponentialBackoffWait(base time.Duration, attempt int, cap time.Duration, jitter float64) time.Duration {
+	// normalize jitter to the range [0, 1.0]
+	if jitter < NoJitter {
+		jitter = NoJitter
+	}
+	if jitter > MaxJitter {
+		jitter = MaxJitter
+	}
+	//sleep = random_between(0, min(cap, base * 2 ** attempt))
+	sleep := base * time.Duration(1<<uint(attempt))
+	if sleep > cap {
+		sleep = cap
+	}
+	if jitter != NoJitter {
+		sleep -= time.Duration(rand.Float64() * float64(sleep) * jitter)
+	}
+	return sleep
+}
+
+// isS3CodeRetryable - is s3 error code retryable.
+func isS3CodeRetryable(s3Code string) bool {
+	switch s3Code {
+	case "RequestError", "RequestTimeout", "Throttling", "ThrottlingException":
+		fallthrough
+	case "RequestLimitExceeded", "RequestThrottled", "InternalError":
+		fallthrough
+	case "ExpiredToken", "ExpiredTokenException":
+		return true
+	}
+	return false
+}
diff --git a/vendor/vendor.json b/vendor/vendor.json
index f5567308a..80435254e 100644
--- a/vendor/vendor.json
+++ b/vendor/vendor.json
@@ -89,8 +89,8 @@
 		},
 		{
 			"path": "github.com/minio/minio-go",
-			"revision": "280f16a52008d3ebba1bd64398b9b082e6738386",
-			"revisionTime": "2016-02-07T03:45:25-08:00"
+			"revision": "a4c6c439feb53e1aad083f0a3f0083a047092c17",
+			"revisionTime": "2016-03-10T10:12:11-08:00"
 		},
 		{
 			"path": "github.com/minio/miniobrowser",