Add constants for commonly used values. (#3588)

This is a consolidation effort, avoiding usage
of naked strings in codebase. Whenever possible
use constants which can be repurposed elsewhere.

This also fixes `goconst ./...` reported issues.

cmd/admin-handlers_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -121,7 +121,7 @@ func testServicesCmdHandler(cmd cmdType, args map[string]interface{}, t *testing
 	// initialize NSLock.
 	initNSLock(false)
 	// Initialize configuration for access/secret credentials.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Unable to initialize server config. %s", err)
 	}
@@ -238,7 +238,7 @@ func TestListLocksHandler(t *testing.T) {
 	// initialize NSLock.
 	initNSLock(false)
 
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Unable to initialize server config. %s", err)
 	}
@@ -323,7 +323,7 @@ func TestClearLocksHandler(t *testing.T) {
 	// initialize NSLock.
 	initNSLock(false)
 
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Unable to initialize server config. %s", err)
 	}

cmd/admin-rpc-server_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,7 @@ func testAdminCmd(cmd cmdType, t *testing.T) {
 	// this is to make sure that the tests are not affected by modified globals.
 	resetTestGlobals()
 
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Failed to create test config - %v", err)
 	}

cmd/api-errors.go

@@ -675,15 +675,11 @@ func getAPIError(code APIErrorCode) APIError {
 // getErrorResponse gets in standard error and resource value and
 // provides a encodable populated response values
 func getAPIErrorResponse(err APIError, resource string) APIErrorResponse {
-	var data = APIErrorResponse{}
+	return APIErrorResponse{
-	data.Code = err.Code
+		Code:      err.Code,
-	data.Message = err.Description
+		Message:   err.Description,
-	if resource != "" {
+		Resource:  resource,
-		data.Resource = resource
+		RequestID: "3L137",
+		HostID:    "3L137",
 	}
-	// TODO implement this in future
-	data.RequestID = "3L137"
-	data.HostID = "3L137"
-
-	return data
 }

cmd/api-response.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -278,8 +278,8 @@ func generateListBucketsResponse(buckets []BucketInfo) ListBucketsResponse {
 	var data = ListBucketsResponse{}
 	var owner = Owner{}
 
-	owner.ID = "minio"
+	owner.ID = globalMinioDefaultOwnerID
-	owner.DisplayName = "minio"
+	owner.DisplayName = globalMinioDefaultOwnerID
 
 	for _, bucket := range buckets {
 		var listbucket = Bucket{}
@@ -301,8 +301,8 @@ func generateListObjectsV1Response(bucket, prefix, marker, delimiter string, max
 	var owner = Owner{}
 	var data = ListObjectsResponse{}
 
-	owner.ID = "minio"
+	owner.ID = globalMinioDefaultOwnerID
-	owner.DisplayName = "minio"
+	owner.DisplayName = globalMinioDefaultOwnerID
 
 	for _, object := range resp.Objects {
 		var content = Object{}
@@ -315,7 +315,7 @@ func generateListObjectsV1Response(bucket, prefix, marker, delimiter string, max
 			content.ETag = "\"" + object.MD5Sum + "\""
 		}
 		content.Size = object.Size
-		content.StorageClass = "STANDARD"
+		content.StorageClass = globalMinioDefaultStorageClass
 		content.Owner = owner
 		// object.HealInfo is non-empty only when resp is constructed in ListObjectsHeal.
 		content.HealInfo = object.HealInfo
@@ -349,8 +349,8 @@ func generateListObjectsV2Response(bucket, prefix, token, startAfter, delimiter
 	var data = ListObjectsV2Response{}
 
 	if fetchOwner {
-		owner.ID = "minio"
+		owner.ID = globalMinioDefaultOwnerID
-		owner.DisplayName = "minio"
+		owner.DisplayName = globalMinioDefaultOwnerID
 	}
 
 	for _, object := range resp.Objects {
@@ -364,7 +364,7 @@ func generateListObjectsV2Response(bucket, prefix, token, startAfter, delimiter
 			content.ETag = "\"" + object.MD5Sum + "\""
 		}
 		content.Size = object.Size
-		content.StorageClass = "STANDARD"
+		content.StorageClass = globalMinioDefaultStorageClass
 		content.Owner = owner
 		contents = append(contents, content)
 	}
@@ -423,11 +423,11 @@ func generateListPartsResponse(partsInfo ListPartsInfo) ListPartsResponse {
 	listPartsResponse.Bucket = partsInfo.Bucket
 	listPartsResponse.Key = partsInfo.Object
 	listPartsResponse.UploadID = partsInfo.UploadID
-	listPartsResponse.StorageClass = "STANDARD"
+	listPartsResponse.StorageClass = globalMinioDefaultStorageClass
-	listPartsResponse.Initiator.ID = "minio"
+	listPartsResponse.Initiator.ID = globalMinioDefaultOwnerID
-	listPartsResponse.Initiator.DisplayName = "minio"
+	listPartsResponse.Initiator.DisplayName = globalMinioDefaultOwnerID
-	listPartsResponse.Owner.ID = "minio"
+	listPartsResponse.Owner.ID = globalMinioDefaultOwnerID
-	listPartsResponse.Owner.DisplayName = "minio"
+	listPartsResponse.Owner.DisplayName = globalMinioDefaultOwnerID
 
 	listPartsResponse.MaxParts = partsInfo.MaxParts
 	listPartsResponse.PartNumberMarker = partsInfo.PartNumberMarker

cmd/auth-handler.go

@@ -58,12 +58,12 @@ func isRequestPresignedSignatureV2(r *http.Request) bool {
 
 // Verify if request has AWS Post policy Signature Version '4'.
 func isRequestPostPolicySignatureV4(r *http.Request) bool {
-	return strings.Contains(r.Header.Get("Content-Type"), "multipart/form-data") && r.Method == "POST"
+	return strings.Contains(r.Header.Get("Content-Type"), "multipart/form-data") && r.Method == httpPOST
 }
 
 // Verify if the request has AWS Streaming Signature Version '4'. This is only valid for 'PUT' operation.
 func isRequestSignStreamingV4(r *http.Request) bool {
-	return r.Header.Get("x-amz-content-sha256") == streamingContentSHA256 && r.Method == "PUT"
+	return r.Header.Get("x-amz-content-sha256") == streamingContentSHA256 && r.Method == httpPUT
 }
 
 // Authorization type.

cmd/auth-handler_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -37,7 +37,7 @@ func TestGetRequestAuthType(t *testing.T) {
 			req: &http.Request{
 				URL: &url.URL{
 					Host:   "localhost:9000",
-					Scheme: "http",
+					Scheme: httpScheme,
 					Path:   "/",
 				},
 				Header: http.Header{
@@ -54,7 +54,7 @@ func TestGetRequestAuthType(t *testing.T) {
 			req: &http.Request{
 				URL: &url.URL{
 					Host:   "localhost:9000",
-					Scheme: "http",
+					Scheme: httpScheme,
 					Path:   "/",
 				},
 				Header: http.Header{
@@ -69,7 +69,7 @@ func TestGetRequestAuthType(t *testing.T) {
 			req: &http.Request{
 				URL: &url.URL{
 					Host:   "localhost:9000",
-					Scheme: "http",
+					Scheme: httpScheme,
 					Path:   "/",
 				},
 				Header: http.Header{
@@ -84,7 +84,7 @@ func TestGetRequestAuthType(t *testing.T) {
 			req: &http.Request{
 				URL: &url.URL{
 					Host:     "localhost:9000",
-					Scheme:   "http",
+					Scheme:   httpScheme,
 					Path:     "/",
 					RawQuery: "X-Amz-Credential=EXAMPLEINVALIDEXAMPL%2Fs3%2F20160314%2Fus-east-1",
 				},
@@ -97,7 +97,7 @@ func TestGetRequestAuthType(t *testing.T) {
 			req: &http.Request{
 				URL: &url.URL{
 					Host:   "localhost:9000",
-					Scheme: "http",
+					Scheme: httpScheme,
 					Path:   "/",
 				},
 				Header: http.Header{
@@ -309,7 +309,7 @@ func mustNewSignedRequest(method string, urlStr string, contentLength int64, bod
 
 // Tests is requested authenticated function, tests replies for s3 errors.
 func TestIsReqAuthenticated(t *testing.T) {
-	path, err := newTestConfig("us-east-1")
+	path, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("unable initialize config file, %s", err)
 	}

cmd/auth-rpc-server_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,7 +22,7 @@ import (
 )
 
 func TestLogin(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Failed to create test config - %v", err)
 	}
@@ -77,7 +77,7 @@ func TestLogin(t *testing.T) {
 		// Invalid password length
 		{
 			args: LoginRPCArgs{
-				Username: "minio",
+				Username: globalMinioDefaultOwnerID,
 				Password: "aaa",
 				Version:  Version,
 			},

cmd/benchmark-utils_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -148,7 +148,7 @@ func runPutObjectPartBenchmark(b *testing.B, obj ObjectLayer, partSize int) {
 
 // creates XL/FS backend setup, obtains the object layer and calls the runPutObjectPartBenchmark function.
 func benchmarkPutObjectPart(b *testing.B, instanceType string, objSize int) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		b.Fatalf("Unable to initialize config. %s", err)
 	}
@@ -167,7 +167,7 @@ func benchmarkPutObjectPart(b *testing.B, instanceType string, objSize int) {
 
 // creates XL/FS backend setup, obtains the object layer and calls the runPutObjectBenchmark function.
 func benchmarkPutObject(b *testing.B, instanceType string, objSize int) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		b.Fatalf("Unable to initialize config. %s", err)
 	}
@@ -186,7 +186,7 @@ func benchmarkPutObject(b *testing.B, instanceType string, objSize int) {
 
 // creates XL/FS backend setup, obtains the object layer and runs parallel benchmark for put object.
 func benchmarkPutObjectParallel(b *testing.B, instanceType string, objSize int) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		b.Fatalf("Unable to initialize config. %s", err)
 	}
@@ -206,7 +206,7 @@ func benchmarkPutObjectParallel(b *testing.B, instanceType string, objSize int)
 // Benchmark utility functions for ObjectLayer.GetObject().
 // Creates Object layer setup ( MakeBucket, PutObject) and then runs the benchmark.
 func runGetObjectBenchmark(b *testing.B, obj ObjectLayer, objSize int) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		b.Fatalf("Unable to initialize config. %s", err)
 	}
@@ -275,7 +275,7 @@ func generateBytesData(size int) []byte {
 
 // creates XL/FS backend setup, obtains the object layer and calls the runGetObjectBenchmark function.
 func benchmarkGetObject(b *testing.B, instanceType string, objSize int) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		b.Fatalf("Unable to initialize config. %s", err)
 	}
@@ -294,7 +294,7 @@ func benchmarkGetObject(b *testing.B, instanceType string, objSize int) {
 
 // creates XL/FS backend setup, obtains the object layer and runs parallel benchmark for ObjectLayer.GetObject() .
 func benchmarkGetObjectParallel(b *testing.B, instanceType string, objSize int) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		b.Fatalf("Unable to initialize config. %s", err)
 	}
@@ -314,7 +314,7 @@ func benchmarkGetObjectParallel(b *testing.B, instanceType string, objSize int)
 // Parallel benchmark utility functions for ObjectLayer.PutObject().
 // Creates Object layer setup ( MakeBucket ) and then runs the PutObject benchmark.
 func runPutObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		b.Fatalf("Unable to initialize config. %s", err)
 	}
@@ -362,7 +362,7 @@ func runPutObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
 // Parallel benchmark utility functions for ObjectLayer.GetObject().
 // Creates Object layer setup ( MakeBucket, PutObject) and then runs the benchmark.
 func runGetObjectBenchmarkParallel(b *testing.B, obj ObjectLayer, objSize int) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		b.Fatalf("Unable to initialize config. %s", err)
 	}

cmd/bucket-handlers.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -100,7 +100,7 @@ func (api objectAPIHandlers) GetBucketLocationHandler(w http.ResponseWriter, r *
 		return
 	}
 
-	if s3Error := checkRequestAuthType(r, bucket, "s3:GetBucketLocation", "us-east-1"); s3Error != ErrNone {
+	if s3Error := checkRequestAuthType(r, bucket, "s3:GetBucketLocation", globalMinioDefaultRegion); s3Error != ErrNone {
 		writeErrorResponse(w, s3Error, r.URL)
 		return
 	}
@@ -115,7 +115,7 @@ func (api objectAPIHandlers) GetBucketLocationHandler(w http.ResponseWriter, r *
 	encodedSuccessResponse := encodeResponse(LocationResponse{})
 	// Get current region.
 	region := serverConfig.GetRegion()
-	if region != "us-east-1" {
+	if region != globalMinioDefaultRegion {
 		encodedSuccessResponse = encodeResponse(LocationResponse{
 			Location: region,
 		})
@@ -187,7 +187,7 @@ func (api objectAPIHandlers) ListBucketsHandler(w http.ResponseWriter, r *http.R
 	}
 
 	// ListBuckets does not have any bucket action.
-	s3Error := checkRequestAuthType(r, "", "", "us-east-1")
+	s3Error := checkRequestAuthType(r, "", "", globalMinioDefaultRegion)
 	if s3Error == ErrInvalidRegion {
 		// Clients like boto3 send listBuckets() call signed with region that is configured.
 		s3Error = checkRequestAuthType(r, "", "", serverConfig.GetRegion())
@@ -334,7 +334,7 @@ func (api objectAPIHandlers) PutBucketHandler(w http.ResponseWriter, r *http.Req
 	}
 
 	// PutBucket does not have any bucket action.
-	if s3Error := checkRequestAuthType(r, "", "", "us-east-1"); s3Error != ErrNone {
+	if s3Error := checkRequestAuthType(r, "", "", globalMinioDefaultRegion); s3Error != ErrNone {
 		writeErrorResponse(w, s3Error, r.URL)
 		return
 	}

cmd/bucket-notification-handlers_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -47,7 +47,7 @@ func newFlushWriter(writer io.Writer) http.ResponseWriter {
 // Tests write notification code.
 func TestWriteNotification(t *testing.T) {
 	// Initialize a new test config.
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Unable to initialize test config %s", err)
 	}
@@ -112,7 +112,7 @@ func TestWriteNotification(t *testing.T) {
 
 func TestSendBucketNotification(t *testing.T) {
 	// Initialize a new test config.
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Unable to initialize test config %s", err)
 	}
@@ -185,7 +185,7 @@ func testGetBucketNotificationHandler(obj ObjectLayer, instanceType, bucketName
 	filterRules := []filterRule{
 		{
 			Name:  "prefix",
-			Value: "minio",
+			Value: globalMinioDefaultOwnerID,
 		},
 		{
 			Name:  "suffix",

cmd/bucket-notification-utils_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -218,7 +218,7 @@ func TestValidEvents(t *testing.T) {
 
 // Tests queue arn validation.
 func TestQueueARN(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("unable initialize config file, %s", err)
 	}
@@ -302,7 +302,7 @@ func TestQueueARN(t *testing.T) {
 
 // Test unmarshal queue arn.
 func TestUnmarshalSQSARN(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("unable initialize config file, %s", err)
 	}

cmd/build-constants.go

@@ -22,12 +22,15 @@ var (
 	// GOPATH - GOPATH value at the time of build.
 	GOPATH = ""
 
+	// Go get development tag.
+	goGetTag = "DEVELOPMENT.GOGET"
+
 	// Version - version time.RFC3339.
-	Version = "DEVELOPMENT.GOGET"
+	Version = goGetTag
 	// ReleaseTag - release tag in TAG.%Y-%m-%dT%H-%M-%SZ.
-	ReleaseTag = "DEVELOPMENT.GOGET"
+	ReleaseTag = goGetTag
 	// CommitID - latest commit id.
-	CommitID = "DEVELOPMENT.GOGET"
+	CommitID = goGetTag
 	// ShortCommitID - first 12 characters from CommitID.
 	ShortCommitID = CommitID[:12]
 )

cmd/checkport_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -47,7 +47,7 @@ func TestCheckPortAvailability(t *testing.T) {
 		err = checkPortAvailability(test.port)
 
 		// Skip if the os is windows due to https://github.com/golang/go/issues/7598
-		if err == nil && runtime.GOOS != "windows" {
+		if err == nil && runtime.GOOS != globalWindowsOSName {
 			t.Fatalf("checkPortAvailability should fail for port: %s. Error: %v", test.port, err)
 		}
 	}

cmd/config-migrate.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -127,7 +127,7 @@ func migrateV2ToV3() error {
 	srvConfig.Region = cv2.Credentials.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature V4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = consoleLogger{
 		Enable: true,
@@ -191,7 +191,7 @@ func migrateV3ToV4() error {
 	srvConfig.Region = cv3.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature Version 4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = cv3.Logger.Console
 	srvConfig.Logger.File = cv3.Logger.File
@@ -237,7 +237,7 @@ func migrateV4ToV5() error {
 	srvConfig.Region = cv4.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature Version 4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = cv4.Logger.Console
 	srvConfig.Logger.File = cv4.Logger.File
@@ -286,7 +286,7 @@ func migrateV5ToV6() error {
 	srvConfig.Region = cv5.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature Version 4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = cv5.Logger.Console
 	srvConfig.Logger.File = cv5.Logger.File
@@ -362,7 +362,7 @@ func migrateV6ToV7() error {
 	srvConfig.Region = cv6.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature Version 4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = cv6.Logger.Console
 	srvConfig.Logger.File = cv6.Logger.File
@@ -426,7 +426,7 @@ func migrateV7ToV8() error {
 	srvConfig.Region = cv7.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature Version 4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = cv7.Logger.Console
 	srvConfig.Logger.File = cv7.Logger.File
@@ -496,7 +496,7 @@ func migrateV8ToV9() error {
 	srvConfig.Region = cv8.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature Version 4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = cv8.Logger.Console
 	srvConfig.Logger.Console.Level = "error"
@@ -583,7 +583,7 @@ func migrateV9ToV10() error {
 	srvConfig.Region = cv9.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature Version 4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = cv9.Logger.Console
 	srvConfig.Logger.File = cv9.Logger.File
@@ -668,7 +668,7 @@ func migrateV10ToV11() error {
 	srvConfig.Region = cv10.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature Version 4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = cv10.Logger.Console
 	srvConfig.Logger.File = cv10.Logger.File
@@ -756,7 +756,7 @@ func migrateV11ToV12() error {
 	srvConfig.Region = cv11.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature Version 4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = cv11.Logger.Console
 	srvConfig.Logger.File = cv11.Logger.File
@@ -861,7 +861,7 @@ func migrateV12ToV13() error {
 	srvConfig.Region = cv12.Region
 	if srvConfig.Region == "" {
 		// Region needs to be set for AWS Signature Version 4.
-		srvConfig.Region = "us-east-1"
+		srvConfig.Region = globalMinioDefaultRegion
 	}
 	srvConfig.Logger.Console = cv12.Logger.Console
 	srvConfig.Logger.File = cv12.Logger.File

cmd/config-migrate_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,7 +24,7 @@ import (
 
 // Test if config v1 is purged
 func TestServerConfigMigrateV1(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -58,7 +58,7 @@ func TestServerConfigMigrateV1(t *testing.T) {
 // Test if all migrate code returns nil when config file does not
 // exist
 func TestServerConfigMigrateInexistentConfig(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -110,7 +110,7 @@ func TestServerConfigMigrateInexistentConfig(t *testing.T) {
 
 // Test if a config migration from v2 to v12 is successfully done
 func TestServerConfigMigrateV2toV12(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -169,7 +169,7 @@ func TestServerConfigMigrateV2toV12(t *testing.T) {
 
 // Test if all migrate code returns error with corrupted config files
 func TestServerConfigMigrateFaultyConfig(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}

cmd/config-v13.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -49,7 +49,7 @@ func initConfig() (bool, error) {
 		// Initialize server config.
 		srvCfg := &serverConfigV13{}
 		srvCfg.Version = globalMinioConfigVersion
-		srvCfg.Region = "us-east-1"
+		srvCfg.Region = globalMinioDefaultRegion
 		srvCfg.Credential = newCredential()
 
 		// Enable console logger by default on a fresh run.

cmd/config-v13_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -22,14 +22,14 @@ import (
 )
 
 func TestServerConfig(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
 	// remove the root directory after the test ends.
 	defer removeAll(rootPath)
 
-	if serverConfig.GetRegion() != "us-east-1" {
+	if serverConfig.GetRegion() != globalMinioDefaultRegion {
 		t.Errorf("Expecting region `us-east-1` found %s", serverConfig.GetRegion())
 	}
 

cmd/erasure-utils.go

@@ -40,11 +40,11 @@ func newHashWriters(diskCount int, algo string) []hash.Hash {
 // newHash - gives you a newly allocated hash depending on the input algorithm.
 func newHash(algo string) (h hash.Hash) {
 	switch algo {
-	case "sha256":
+	case sha256Algo:
 		// sha256 checksum specially on ARM64 platforms or whenever
 		// requested as dictated by `xl.json` entry.
 		h = sha256.New()
-	case "blake2b":
+	case blake2bAlgo:
 		// ignore the error, because New512 without a key never fails
 		// New512 only returns a non-nil error, if the length of the passed
 		// key > 64 bytes - but we use blake2b as hash function (no key)

cmd/event-notifier_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -28,7 +28,7 @@ import (
 // Test InitEventNotifier with faulty disks
 func TestInitEventNotifierFaultyDisks(t *testing.T) {
 	// Prepare for tests
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -85,7 +85,7 @@ func TestInitEventNotifierFaultyDisks(t *testing.T) {
 func TestInitEventNotifierWithPostgreSQL(t *testing.T) {
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -116,7 +116,7 @@ func TestInitEventNotifierWithPostgreSQL(t *testing.T) {
 func TestInitEventNotifierWithNATS(t *testing.T) {
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -147,7 +147,7 @@ func TestInitEventNotifierWithNATS(t *testing.T) {
 func TestInitEventNotifierWithWebHook(t *testing.T) {
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -178,7 +178,7 @@ func TestInitEventNotifierWithWebHook(t *testing.T) {
 func TestInitEventNotifierWithAMQP(t *testing.T) {
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -209,7 +209,7 @@ func TestInitEventNotifierWithAMQP(t *testing.T) {
 func TestInitEventNotifierWithElasticSearch(t *testing.T) {
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -240,7 +240,7 @@ func TestInitEventNotifierWithElasticSearch(t *testing.T) {
 func TestInitEventNotifierWithRedis(t *testing.T) {
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -346,7 +346,7 @@ func TestInitEventNotifier(t *testing.T) {
 	filterRules := []filterRule{
 		{
 			Name:  "prefix",
-			Value: "minio",
+			Value: globalMinioDefaultOwnerID,
 		},
 		{
 			Name:  "suffix",
@@ -569,7 +569,7 @@ func TestAddRemoveBucketListenerConfig(t *testing.T) {
 	filterRules := []filterRule{
 		{
 			Name:  "prefix",
-			Value: "minio",
+			Value: globalMinioDefaultOwnerID,
 		},
 		{
 			Name:  "suffix",

cmd/format-config-v1_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -812,7 +812,7 @@ func TestLoadFormatXLErrs(t *testing.T) {
 
 // Tests for healFormatXLCorruptedDisks() with cases which lead to errors
 func TestHealFormatXLCorruptedDisksErrs(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -968,7 +968,7 @@ func TestHealFormatXLCorruptedDisksErrs(t *testing.T) {
 
 // Tests for healFormatXLFreshDisks() with cases which lead to errors
 func TestHealFormatXLFreshDisksErrs(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}

cmd/fs-v1-helpers_test.go

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

cmd/fs-v1-metadata.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -164,11 +164,22 @@ func (m *fsMetaV1) ReadFrom(reader io.Reader) (n int64, err error) {
 	return int64(len(metadataBytes)), nil
 }
 
+// FS metadata constants.
+const (
+	// FS backend meta version.
+	fsMetaVersion = "1.0.0"
+
+	// FS backend meta format.
+	fsMetaFormat = "fs"
+
+	// Add more constants here.
+)
+
 // newFSMetaV1 - initializes new fsMetaV1.
 func newFSMetaV1() (fsMeta fsMetaV1) {
 	fsMeta = fsMetaV1{}
-	fsMeta.Version = "1.0.0"
+	fsMeta.Version = fsMetaVersion
-	fsMeta.Format = "fs"
+	fsMeta.Format = fsMetaFormat
 	fsMeta.Minio.Release = ReleaseTag
 	return fsMeta
 }

cmd/fs-v1-multipart-common.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -51,7 +51,7 @@ func (fs fsObjects) deleteUploadsJSON(bucket, object, uploadID string) error {
 	uploadsMetaPath := pathJoin(uploadPath, uploadsJSONFile)
 
 	// Special case for windows please read through.
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		// Ordinarily windows does not permit deletion or renaming of files still
 		// in use, but if all open handles to that file were opened with FILE_SHARE_DELETE
 		// then it can permit renames and deletions of open files.

cmd/fs-v1-multipart_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -48,7 +48,7 @@ func TestNewMultipartUploadFaultyDisk(t *testing.T) {
 
 // TestPutObjectPartFaultyDisk - test PutObjectPart with faulty disks
 func TestPutObjectPartFaultyDisk(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}

cmd/fs-v1-rwpool_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -69,7 +69,7 @@ func TestRWPool(t *testing.T) {
 
 	// Fails to create a file if there is a directory.
 	_, err = rwPool.Create(pathJoin(path, "success-vol", "file"))
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		if err != errFileAccessDenied {
 			t.Fatal("Unexpected error", err)
 		}
@@ -87,7 +87,7 @@ func TestRWPool(t *testing.T) {
 
 	// Fails to read a directory.
 	_, err = rwPool.Open(pathJoin(path, "success-vol", "file"))
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		if err != errFileAccessDenied {
 			t.Fatal("Unexpected error", err)
 		}
@@ -99,7 +99,7 @@ func TestRWPool(t *testing.T) {
 
 	// Fails to open a file which has a parent as file.
 	_, err = rwPool.Open(pathJoin(path, "success-vol", "file/path/1.txt/test"))
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		if err != errFileAccessDenied {
 			t.Fatal("Unexpected error", err)
 		}

cmd/fs-v1.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -179,7 +179,7 @@ func newFSObjectLayer(fsPath string) (ObjectLayer, error) {
 func (fs fsObjects) checkDiskFree() (err error) {
 	// We don't validate disk space or inode utilization on windows.
 	// Each windows calls to 'GetVolumeInformationW' takes around 3-5seconds.
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		return nil
 	}
 

cmd/fs-v1_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -49,7 +49,7 @@ func TestNewFS(t *testing.T) {
 // TestFSShutdown - initialize a new FS object layer then calls
 // Shutdown to check returned results
 func TestFSShutdown(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}

cmd/generic-handlers.go

@@ -139,7 +139,7 @@ func setBrowserCacheControlHandler(h http.Handler) http.Handler {
 }
 
 func (h cacheControlHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	if r.Method == "GET" && guessIsBrowserReq(r) && globalIsBrowserEnabled {
+	if r.Method == httpGET && guessIsBrowserReq(r) && globalIsBrowserEnabled {
 		// For all browser requests set appropriate Cache-Control policies
 		if strings.HasPrefix(r.URL.Path, reservedBucket+"/") {
 			if strings.HasSuffix(r.URL.Path, ".js") || r.URL.Path == reservedBucket+"/favicon.ico" {
@@ -249,11 +249,31 @@ type resourceHandler struct {
 	handler http.Handler
 }
 
+// List of http methods.
+const (
+	httpGET     = "GET"
+	httpPUT     = "PUT"
+	httpHEAD    = "HEAD"
+	httpPOST    = "POST"
+	httpDELETE  = "DELETE"
+	httpOPTIONS = "OPTIONS"
+)
+
+// List of default allowable HTTP methods.
+var defaultAllowableHTTPMethods = []string{
+	httpGET,
+	httpPUT,
+	httpHEAD,
+	httpPOST,
+	httpDELETE,
+	httpOPTIONS,
+}
+
 // setCorsHandler handler for CORS (Cross Origin Resource Sharing)
 func setCorsHandler(h http.Handler) http.Handler {
 	c := cors.New(cors.Options{
 		AllowedOrigins: []string{"*"},
-		AllowedMethods: []string{"GET", "HEAD", "POST", "PUT", "DELETE", "OPTIONS"},
+		AllowedMethods: defaultAllowableHTTPMethods,
 		AllowedHeaders: []string{"*"},
 		ExposedHeaders: []string{"ETag"},
 	})
@@ -328,7 +348,7 @@ func (h resourceHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 	// A put method on path "/" doesn't make sense, ignore it.
-	if r.Method == "PUT" && r.URL.Path == "/" {
+	if r.Method == httpPUT && r.URL.Path == "/" {
 		writeErrorResponse(w, ErrNotImplemented, r.URL)
 		return
 	}

cmd/globals.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -45,6 +45,11 @@ const (
 	globalMinioKeyFile            = "private.key"
 	globalMinioConfigFile         = "config.json"
 	globalMinioCertExpireWarnDays = time.Hour * 24 * 30 // 30 days.
+
+	globalMinioDefaultRegion       = "us-east-1"
+	globalMinioDefaultOwnerID      = "minio"
+	globalMinioDefaultStorageClass = "STANDARD"
+	globalWindowsOSName            = "windows"
 	// Add new global values here.
 )
 
@@ -118,10 +123,8 @@ var (
 
 // global colors.
 var (
-	colorRed   = color.New(color.FgRed).SprintFunc()
+	colorBold = color.New(color.Bold).SprintFunc()
-	colorBold  = color.New(color.Bold).SprintFunc()
+	colorBlue = color.New(color.FgBlue).SprintfFunc()
-	colorBlue  = color.New(color.FgBlue).SprintfFunc()
-	colorGreen = color.New(color.FgGreen).SprintfFunc()
 )
 
 // Parse command arguments and set global variables accordingly

cmd/handler-utils.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -39,9 +39,9 @@ func isValidLocationConstraint(r *http.Request) (s3Error APIErrorCode) {
 		// Once region has been obtained we proceed to verify it.
 		incomingRegion := locationConstraint.Location
 		if incomingRegion == "" {
-			// Location constraint is empty for region "us-east-1",
+			// Location constraint is empty for region globalMinioDefaultRegion,
 			// in accordance with protocol.
-			incomingRegion = "us-east-1"
+			incomingRegion = globalMinioDefaultRegion
 		}
 		// Return errInvalidRegion if location constraint does not match
 		// with configured region.

cmd/handler-utils_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,7 +27,7 @@ import (
 
 // Tests validate bucket LocationConstraint.
 func TestIsValidLocationContraint(t *testing.T) {
-	path, err := newTestConfig("us-east-1")
+	path, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("unable initialize config file, %s", err)
 	}
@@ -63,12 +63,12 @@ func TestIsValidLocationContraint(t *testing.T) {
 		expectedCode            APIErrorCode
 	}{
 		// Test case - 1.
-		{"us-east-1", "us-east-1", ErrNone},
+		{globalMinioDefaultRegion, globalMinioDefaultRegion, ErrNone},
 		// Test case - 2.
 		// In case of empty request body ErrNone is returned.
-		{"", "us-east-1", ErrNone},
+		{"", globalMinioDefaultRegion, ErrNone},
 		// Test case - 3.
-		{"eu-central-1", "us-east-1", ErrInvalidRegion},
+		{"eu-central-1", globalMinioDefaultRegion, ErrInvalidRegion},
 	}
 	for i, testCase := range testCases {
 		inputRequest, e := createExpectedRequest(&http.Request{}, testCase.locationForInputRequest)

cmd/jwt_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -19,7 +19,7 @@ package cmd
 import "testing"
 
 func testAuthenticate(authType string, t *testing.T) {
-	testPath, err := newTestConfig("us-east-1")
+	testPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("unable initialize config file, %s", err)
 	}

cmd/lock-rpc-server_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -45,7 +45,7 @@ func testLockEquality(lriLeft, lriRight []lockRequesterInfo) bool {
 
 // Helper function to create a lock server for testing
 func createLockTestServer(t *testing.T) (string, *lockServer, string) {
-	testPath, err := newTestConfig("us-east-1")
+	testPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("unable initialize config file, %s", err)
 	}
@@ -446,7 +446,7 @@ func TestLockRpcServerExpired(t *testing.T) {
 
 // Test initialization of lock servers.
 func TestLockServers(t *testing.T) {
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		return
 	}
 
@@ -466,19 +466,19 @@ func TestLockServers(t *testing.T) {
 			isDistXL: true,
 			srvCmdConfig: serverCmdConfig{
 				endpoints: []*url.URL{{
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "localhost:9000",
 					Path:   "/mnt/disk1",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.1.2:9000",
 					Path:   "/mnt/disk2",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.2.1:9000",
 					Path:   "/mnt/disk3",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.2.2:9000",
 					Path:   "/mnt/disk4",
 				}},
@@ -490,19 +490,19 @@ func TestLockServers(t *testing.T) {
 			isDistXL: true,
 			srvCmdConfig: serverCmdConfig{
 				endpoints: []*url.URL{{
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "localhost:9000",
 					Path:   "/mnt/disk1",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "localhost:9000",
 					Path:   "/mnt/disk2",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.2.1:9000",
 					Path:   "/mnt/disk3",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.2.2:9000",
 					Path:   "/mnt/disk4",
 				}},

cmd/notify-webhook_test.go

@@ -40,7 +40,7 @@ func (p postHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 // Tests web hook initialization.
 func TestNewWebHookNotify(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}

cmd/object-api-common.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -159,12 +159,12 @@ func getPath(ep *url.URL) string {
 	}
 	var diskPath string
 	// For windows ep.Path is usually empty
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		switch ep.Scheme {
 		case "":
 			// Eg. "minio server .\export"
 			diskPath = ep.Path
-		case "http", "https":
+		case httpScheme, httpsScheme:
 			// For full URLs windows drive is part of URL path.
 			// Eg: http://ip:port/C:\mydrive
 			// For windows trim off the preceding "/".

cmd/object-api-common_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -106,7 +106,7 @@ func TestGetPath(t *testing.T) {
 		epStr string
 		path  string
 	}
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		testCases = []struct {
 			epStr string
 			path  string

cmd/object-api-getobject_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -182,7 +182,7 @@ func testGetObject(obj ObjectLayer, instanceType string, t TestErrHandler) {
 // Wrapper for calling GetObject with permission denied expected
 func TestGetObjectPermissionDenied(t *testing.T) {
 	// Windows doesn't support Chmod under golang
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		ExecObjectLayerDiskAlteredTest(t, testGetObjectPermissionDenied)
 	}
 }

cmd/object-api-listobjects_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015-2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015-2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -588,7 +588,7 @@ func BenchmarkListObjects(b *testing.B) {
 	}
 	defer removeAll(directory)
 	// initialize the root directory.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		b.Fatalf("Unable to initialize config. %s", err)
 	}

cmd/object-api-multipart_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -1061,7 +1061,7 @@ func testListMultipartUploads(obj ObjectLayer, instanceType string, t TestErrHan
 		{
 			MaxUploads:     10,
 			IsTruncated:    false,
-			Prefix:         "minio",
+			Prefix:         globalMinioDefaultOwnerID,
 			UploadIDMarker: uploadIDs[4],
 			Uploads: []uploadMetadata{
 				{
@@ -1201,7 +1201,7 @@ func testListMultipartUploads(obj ObjectLayer, instanceType string, t TestErrHan
 		//	Test case with `prefix` and `KeyMarker` (Test number 48).
 		{bucketNames[2], "minio-object", objectNames[1], "", "", 10, listMultipartResults[34], nil, true},
 		//	Test case with `prefix` and `uploadIDMarker` (Test number 49).
-		// {bucketNames[2], "minio", "", uploadIDs[4], "", 10, listMultipartResults[35], nil, true},
+		// {bucketNames[2], globalMinioDefaultOwnerID, "", uploadIDs[4], "", 10, listMultipartResults[35], nil, true},
 		//	Test case with `KeyMarker` and `uploadIDMarker` (Test number 50).
 		// {bucketNames[2], "minio-object.txt", "", uploadIDs[5], "", 10, listMultipartResults[36], nil, true},
 	}

cmd/posix-errors.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -79,7 +79,7 @@ func isSysErrTooLong(err error) bool {
 // and ERROR_DIR_NOT_EMPTY for windows (directory not empty).
 func isSysErrNotEmpty(err error) bool {
 	if pathErr, ok := err.(*os.PathError); ok {
-		if runtime.GOOS == "windows" {
+		if runtime.GOOS == globalWindowsOSName {
 			if errno, _ok := pathErr.Err.(syscall.Errno); _ok && errno == 0x91 {
 				// ERROR_DIR_NOT_EMPTY
 				return true
@@ -95,7 +95,7 @@ func isSysErrNotEmpty(err error) bool {
 
 // Check if the given error corresponds to the specific ERROR_PATH_NOT_FOUND for windows
 func isSysErrPathNotFound(err error) bool {
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		return false
 	}
 	if pathErr, ok := err.(*os.PathError); ok {
@@ -109,7 +109,7 @@ func isSysErrPathNotFound(err error) bool {
 
 // Check if the given error corresponds to the specific ERROR_INVALID_HANDLE for windows
 func isSysErrHandleInvalid(err error) bool {
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		return false
 	}
 	// Check if err contains ERROR_INVALID_HANDLE errno

cmd/posix-errors_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -34,7 +34,7 @@ func TestSysErrors(t *testing.T) {
 	if !ok {
 		t.Fatalf("Unexpected error expecting %s", syscall.ENOTDIR)
 	}
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		pathErr = &os.PathError{Err: syscall.ENOTEMPTY}
 		ok = isSysErrNotEmpty(pathErr)
 		if !ok {
@@ -47,7 +47,7 @@ func TestSysErrors(t *testing.T) {
 			t.Fatal("Unexpected error expecting 0x91")
 		}
 	}
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		pathErr = &os.PathError{Err: syscall.Errno(0x03)}
 		ok = isSysErrPathNotFound(pathErr)
 		if !ok {

cmd/posix-prepare-path.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -24,7 +24,7 @@ import (
 
 // preparePath rewrites path to handle any OS specific details.
 func preparePath(path string) string {
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		// Microsoft Windows supports long path names using
 		// uniform naming convention (UNC).
 		return UNCPath(path)

cmd/posix.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -157,7 +157,7 @@ func getDiskInfo(diskPath string) (di disk.Info, err error) {
 func (s *posix) checkDiskFree() (err error) {
 	// We don't validate disk space or inode utilization on windows.
 	// Each windows calls to 'GetVolumeInformationW' takes around 3-5seconds.
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		return nil
 	}
 

cmd/posix_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -286,7 +286,7 @@ func TestPosixMakeVol(t *testing.T) {
 	}
 
 	// TestPosix for permission denied.
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		// Initialize posix storage layer for permission denied error.
 		posix, err := newPosix("/usr")
 		if err != nil {
@@ -377,7 +377,7 @@ func TestPosixDeleteVol(t *testing.T) {
 	}
 
 	// TestPosix for permission denied.
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		// Initialize posix storage layer for permission denied error.
 		posixStorage, err = newPosix("/usr")
 		if err != nil {
@@ -656,7 +656,7 @@ func TestPosixPosixListDir(t *testing.T) {
 	}
 
 	// TestPosix for permission denied.
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		// Initialize posix storage layer for permission denied error.
 		posixStorage, err = newPosix("/usr")
 		if err != nil {
@@ -770,7 +770,7 @@ func TestPosixDeleteFile(t *testing.T) {
 	}
 
 	// TestPosix for permission denied.
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		// Initialize posix storage layer for permission denied error.
 		posixStorage, err = newPosix("/usr")
 		if err != nil {
@@ -881,7 +881,7 @@ func TestPosixReadFile(t *testing.T) {
 			-1, 5,
 			nil,
 			func() error {
-				if runtime.GOOS == "windows" {
+				if runtime.GOOS == globalWindowsOSName {
 					return &os.PathError{
 						Op:   "seek",
 						Path: preparePath(slashpath.Join(path, "success-vol", "myobject")),
@@ -937,7 +937,7 @@ func TestPosixReadFile(t *testing.T) {
 		if err != nil && testCase.expectedErr != nil {
 			// Validate if the type string of the errors are an exact match.
 			if err.Error() != testCase.expectedErr.Error() {
-				if runtime.GOOS != "windows" {
+				if runtime.GOOS != globalWindowsOSName {
 					t.Errorf("Case: %d %#v, expected: %s, got: %s", i+1, testCase, testCase.expectedErr, err)
 				} else {
 					var resultErrno, expectErrno uintptr
@@ -1075,7 +1075,7 @@ func TestPosixAppendFile(t *testing.T) {
 	}
 
 	// TestPosix for permission denied.
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		// Initialize posix storage layer for permission denied error.
 		posixStorage, err = newPosix("/usr")
 		if err != nil {
@@ -1162,7 +1162,7 @@ func TestPosixPrepareFile(t *testing.T) {
 	}
 
 	// TestPosix for permission denied.
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		// Initialize posix storage layer for permission denied error.
 		posixStorage, err = newPosix("/usr")
 		if err != nil {

cmd/post-policy_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -115,7 +115,7 @@ func TestPostPolicyBucketHandler(t *testing.T) {
 
 // testPostPolicyBucketHandler - Tests validate post policy handler uploading objects.
 func testPostPolicyBucketHandler(obj ObjectLayer, instanceType string, t TestErrHandler) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Initializing config.json failed")
 	}
@@ -402,7 +402,7 @@ func TestPostPolicyBucketHandlerRedirect(t *testing.T) {
 
 // testPostPolicyBucketHandlerRedirect tests POST Object when success_action_redirect is specified
 func testPostPolicyBucketHandlerRedirect(obj ObjectLayer, instanceType string, t TestErrHandler) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Initializing config.json failed")
 	}

cmd/postpolicyform.go

@@ -27,6 +27,31 @@ import (
 	"time"
 )
 
+// startWithConds - map which indicates if a given condition supports starts-with policy operator
+var startsWithConds = map[string]bool{
+	"$acl":                 true,
+	"$bucket":              false,
+	"$cache-control":       true,
+	"$content-type":        true,
+	"$content-disposition": true,
+	"$content-encoding":    true,
+	"$expires":             true,
+	"$key":                 true,
+	"$success_action_redirect": true,
+	"$redirect":                true,
+	"$success_action_status":   false,
+	"$x-amz-algorithm":         false,
+	"$x-amz-credential":        false,
+	"$x-amz-date":              false,
+}
+
+// Add policy conditionals.
+const (
+	policyCondEqual         = "eq"
+	policyCondStartsWith    = "starts-with"
+	policyCondContentLength = "content-length-range"
+)
+
 // toString - Safely convert interface to string without causing panic.
 func toString(val interface{}) string {
 	switch v := val.(type) {
@@ -127,7 +152,7 @@ func parsePostPolicyForm(policy string) (PostPolicyForm, error) {
 					Operator string
 					Value    string
 				}{
-					Operator: "eq",
+					Operator: policyCondEqual,
 					Value:    toString(v),
 				}
 			}
@@ -136,7 +161,7 @@ func parsePostPolicyForm(policy string) (PostPolicyForm, error) {
 				return parsedPolicy, fmt.Errorf("Malformed conditional fields %s of type %s found in POST policy form", condt, reflect.TypeOf(condt).String())
 			}
 			switch toLowerString(condt[0]) {
-			case "eq", "starts-with":
+			case policyCondEqual, policyCondStartsWith:
 				for _, v := range condt { // Pre-check all values for type.
 					if !isString(v) {
 						// All values must be of type string.
@@ -151,7 +176,7 @@ func parsePostPolicyForm(policy string) (PostPolicyForm, error) {
 					Operator: operator,
 					Value:    value,
 				}
-			case "content-length-range":
+			case policyCondContentLength:
 				min, err := toInteger(condt[1])
 				if err != nil {
 					return parsedPolicy, err
@@ -180,31 +205,13 @@ func parsePostPolicyForm(policy string) (PostPolicyForm, error) {
 	return parsedPolicy, nil
 }
 
-// startWithConds - map which indicates if a given condition supports starts-with policy operator
-var startsWithConds = map[string]bool{
-	"$acl":                 true,
-	"$bucket":              false,
-	"$cache-control":       true,
-	"$content-type":        true,
-	"$content-disposition": true,
-	"$content-encoding":    true,
-	"$expires":             true,
-	"$key":                 true,
-	"$success_action_redirect": true,
-	"$redirect":                true,
-	"$success_action_status":   false,
-	"$x-amz-algorithm":         false,
-	"$x-amz-credential":        false,
-	"$x-amz-date":              false,
-}
-
 // checkPolicyCond returns a boolean to indicate if a condition is satisified according
 // to the passed operator
 func checkPolicyCond(op string, input1, input2 string) bool {
 	switch op {
-	case "eq":
+	case policyCondEqual:
 		return input1 == input2
-	case "starts-with":
+	case policyCondStartsWith:
 		return strings.HasPrefix(input1, input2)
 	}
 	return false
@@ -231,7 +238,7 @@ func checkPostPolicy(formValues map[string]string, postPolicyForm PostPolicyForm
 		// If the current policy condition is known
 		if startsWithSupported, condFound := startsWithConds[cond]; condFound {
 			// Check if the current condition supports starts-with operator
-			if op == "starts-with" && !startsWithSupported {
+			if op == policyCondStartsWith && !startsWithSupported {
 				return ErrAccessDenied
 			}
 			// Check if current policy condition is satisfied

cmd/prepare-storage-msg.go

@@ -65,9 +65,9 @@ func printHealMsg(endpoints []*url.URL, storageDisks []StorageAPI, fn printOnceF
 // for single node XL, distributed XL and when minio server is bound
 // to a specific ip:port.
 func getHealEndpoint(tls bool, firstEndpoint *url.URL) (cEndpoint *url.URL) {
-	scheme := "http"
+	scheme := httpScheme
 	if tls {
-		scheme = "https"
+		scheme = httpsScheme
 	}
 	cEndpoint = &url.URL{
 		Scheme: scheme,
@@ -93,6 +93,12 @@ func getHealEndpoint(tls bool, firstEndpoint *url.URL) (cEndpoint *url.URL) {
 	return cEndpoint
 }
 
+// Disks offline and online strings..
+const (
+	diskOffline = "offline"
+	diskOnline  = "online"
+)
+
 // Constructs a formatted heal message, when cluster is found to be in state where it requires healing.
 // healing is optional, server continues to initialize object layer after printing this message.
 // it is upto the end user to perform a heal if needed.
@@ -112,9 +118,9 @@ func getHealMsg(endpoints []*url.URL, storageDisks []StorageAPI) string {
 			humanize.IBytes(uint64(info.Total)),
 			func() string {
 				if info.Total > 0 {
-					return "online"
+					return diskOnline
 				}
-				return "offline"
+				return diskOffline
 			}(),
 		)
 	}
@@ -142,9 +148,9 @@ func getStorageInitMsg(titleMsg string, endpoints []*url.URL, storageDisks []Sto
 			humanize.IBytes(uint64(info.Total)),
 			func() string {
 				if info.Total > 0 {
-					return "online"
+					return diskOnline
 				}
-				return "offline"
+				return diskOffline
 			}(),
 		)
 	}

cmd/prepare-storage-msg_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,11 +27,11 @@ func TestGetHealEndpoint(t *testing.T) {
 	// Test for a SSL scheme.
 	tls := true
 	hURL := getHealEndpoint(tls, &url.URL{
-		Scheme: "http",
+		Scheme: httpScheme,
 		Host:   "localhost:9000",
 	})
 	sHURL := &url.URL{
-		Scheme: "https",
+		Scheme: httpsScheme,
 		Host:   "localhost:9000",
 	}
 	if !reflect.DeepEqual(hURL, sHURL) {
@@ -41,11 +41,11 @@ func TestGetHealEndpoint(t *testing.T) {
 	// Test a non-TLS scheme.
 	tls = false
 	hURL = getHealEndpoint(tls, &url.URL{
-		Scheme: "https",
+		Scheme: httpsScheme,
 		Host:   "localhost:9000",
 	})
 	sHURL = &url.URL{
-		Scheme: "http",
+		Scheme: httpScheme,
 		Host:   "localhost:9000",
 	}
 	if !reflect.DeepEqual(hURL, sHURL) {
@@ -61,7 +61,7 @@ func TestGetHealEndpoint(t *testing.T) {
 			Path: "/export",
 		})
 		sHURL = &url.URL{
-			Scheme: "http",
+			Scheme: httpScheme,
 			Host:   "",
 		}
 		globalMinioAddr = ""
@@ -73,7 +73,7 @@ func TestGetHealEndpoint(t *testing.T) {
 
 // Tests heal message to be correct and properly formatted.
 func TestHealMsg(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal("Unable to initialize test config", err)
 	}

cmd/retry-storage_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,7 +25,7 @@ import (
 
 // Tests retry storage.
 func TestRetryStorage(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}

cmd/s3-peer-client_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,7 @@ import (
 // endpoints.
 func TestMakeS3Peers(t *testing.T) {
 	// Initialize configuration
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("%s", err)
 	}

cmd/scan-bar.go

@@ -1,92 +0,0 @@
-/*
- * Minio Cloud Storage (C) 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 cmd
-
-import (
-	"fmt"
-	"runtime"
-	"strings"
-
-	"github.com/cheggaaa/pb"
-	"github.com/dustin/go-humanize"
-	"github.com/minio/mc/pkg/console"
-)
-
-// fixateScanBar truncates or stretches text to fit within the terminal size.
-func fixateScanBar(text string, width int) string {
-	if len([]rune(text)) > width {
-		// Trim text to fit within the screen
-		trimSize := len([]rune(text)) - width + 3 //"..."
-		if trimSize < len([]rune(text)) {
-			text = "..." + text[trimSize:]
-		}
-	} else {
-		text += strings.Repeat(" ", width-len([]rune(text)))
-	}
-	return text
-}
-
-// Progress bar function report objects being scaned.
-type scanBarFunc func(string)
-
-// scanBarFactory returns a progress bar function to report URL scanning.
-func scanBarFactory() scanBarFunc {
-	fileCount := 0
-	termWidth, err := pb.GetTerminalWidth()
-	if err != nil {
-		termWidth = 80
-	}
-
-	// Cursor animate channel.
-	cursorCh := cursorAnimate()
-	return func(source string) {
-		scanPrefix := fmt.Sprintf("[%s] %s ", humanize.Comma(int64(fileCount)), string(<-cursorCh))
-		source = fixateScanBar(source, termWidth-len([]rune(scanPrefix)))
-		barText := scanPrefix + source
-		console.PrintC("\r" + barText + "\r")
-		fileCount++
-	}
-}
-
-// cursorAnimate - returns a animated rune through read channel for every read.
-func cursorAnimate() <-chan rune {
-	cursorCh := make(chan rune)
-	var cursors string
-
-	switch runtime.GOOS {
-	case "linux":
-		// cursors = "➩➪➫➬➭➮➯➱"
-		// cursors = "▁▃▄▅▆▇█▇▆▅▄▃"
-		cursors = "◐◓◑◒"
-		// cursors = "←↖↑↗→↘↓↙"
-		// cursors = "◴◷◶◵"
-		// cursors = "◰◳◲◱"
-		//cursors = "⣾⣽⣻⢿⡿⣟⣯⣷"
-	case "darwin":
-		cursors = "◐◓◑◒"
-	default:
-		cursors = "|/-\\"
-	}
-	go func() {
-		for {
-			for _, cursor := range cursors {
-				cursorCh <- cursor
-			}
-		}
-	}()
-	return cursorCh
-}

cmd/server-main.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -195,36 +195,45 @@ func isDistributedSetup(eps []*url.URL) bool {
 	return false
 }
 
+// Returns true if path is empty, or equals to '.', '/', '\' characters.
+func isPathSentinel(path string) bool {
+	return path == "" || path == "." || path == "/" || path == `\`
+}
+
+// Returned when path is empty or root path.
+var errEmptyRootPath = errors.New("Empty or root path is not allowed")
+
+// Invalid scheme passed.
+var errInvalidScheme = errors.New("Invalid scheme")
+
 // Check if endpoint is in expected syntax by valid scheme/path across all platforms.
 func checkEndpointURL(endpointURL *url.URL) (err error) {
-	// applicable to all OS.
+	// Applicable to all OS.
-	if endpointURL.Scheme == "" || endpointURL.Scheme == "http" || endpointURL.Scheme == "https" {
+	if endpointURL.Scheme == "" || endpointURL.Scheme == httpScheme || endpointURL.Scheme == httpsScheme {
-		urlPath := path.Clean(endpointURL.Path)
+		if isPathSentinel(path.Clean(endpointURL.Path)) {
-		if urlPath == "" || urlPath == "." || urlPath == "/" || urlPath == `\` {
+			err = errEmptyRootPath
-			err = fmt.Errorf("Empty or root path is not allowed")
 		}
 
 		return err
 	}
 
 	// Applicable to Windows only.
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		// On Windows, endpoint can be a path with drive eg. C:\Export and its URL.Scheme is 'C'.
 		// Check if URL.Scheme is a single letter alphabet to represent a drive.
 		// Note: URL.Parse() converts scheme into lower case always.
 		if len(endpointURL.Scheme) == 1 && endpointURL.Scheme[0] >= 'a' && endpointURL.Scheme[0] <= 'z' {
 			// If endpoint is C:\ or C:\export, URL.Path does not have path information like \ or \export
 			// hence we directly work with endpoint.
-			urlPath := strings.SplitN(path.Clean(endpointURL.String()), ":", 2)[1]
+			if isPathSentinel(strings.SplitN(path.Clean(endpointURL.String()), ":", 2)[1]) {
-			if urlPath == "" || urlPath == "." || urlPath == "/" || urlPath == `\` {
+				err = errEmptyRootPath
-				err = fmt.Errorf("Empty or root path is not allowed")
 			}
 
 			return err
 		}
 	}
 
-	return fmt.Errorf("Invalid scheme")
+	return errInvalidScheme
 }
 
 // Check if endpoints are in expected syntax by valid scheme/path across all platforms.
@@ -300,7 +309,7 @@ func checkServerSyntax(c *cli.Context) {
 	}
 
 	for _, ep := range endpoints {
-		if ep.Scheme == "https" && !globalIsSSL {
+		if ep.Scheme == httpsScheme && !globalIsSSL {
 			// Certificates should be provided for https configuration.
 			fatalIf(errInvalidArgument, "Certificates not provided for secure configuration")
 		}

cmd/server-main_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -133,7 +133,7 @@ func TestFinalizeAPIEndpoints(t *testing.T) {
 // Tests all the expected input disks for function checkSufficientDisks.
 func TestCheckSufficientDisks(t *testing.T) {
 	var xlDisks []string
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		xlDisks = []string{
 			"C:\\mnt\\backend1",
 			"C:\\mnt\\backend2",
@@ -330,7 +330,7 @@ func TestCheckEndpointsSyntax(t *testing.T) {
 		"server:/export",
 	}
 
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		successCases = append(successCases,
 			`\export`,
 			`D:\export`,
@@ -401,7 +401,7 @@ func TestIsDistributedSetup(t *testing.T) {
 		disks  []string
 		result bool
 	}
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		testCases = []struct {
 			disks  []string
 			result bool
@@ -457,7 +457,7 @@ func TestIsDistributedSetup(t *testing.T) {
 
 func TestInitServerConfig(t *testing.T) {
 	ctx := &cli.Context{}
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal("Failed to set up test config")
 	}

cmd/server-mux.go

@@ -71,6 +71,12 @@ func NewConnMux(c net.Conn) *ConnMux {
 	}
 }
 
+const (
+	protocolTLS   = "tls"
+	protocolHTTP1 = "http"
+	protocolHTTP2 = "http2"
+)
+
 // PeekProtocol - reads the first bytes, then checks if it is similar
 // to one of the default http methods
 func (c *ConnMux) PeekProtocol() string {
@@ -79,19 +85,19 @@ func (c *ConnMux) PeekProtocol() string {
 		if err != io.EOF {
 			errorIf(err, "Unable to peek into the protocol")
 		}
-		return "http"
+		return protocolHTTP1
 	}
 	for _, m := range defaultHTTP1Methods {
 		if strings.HasPrefix(string(buf), m) {
-			return "http"
+			return protocolHTTP1
 		}
 	}
 	for _, m := range defaultHTTP2Methods {
 		if strings.HasPrefix(string(buf), m) {
-			return "http2"
+			return protocolHTTP2
 		}
 	}
-	return "tls"
+	return protocolTLS
 }
 
 // Read - streams the ConnMux buffer when reset flag is activated, otherwise
@@ -194,10 +200,14 @@ func newListenerMux(listener net.Listener, config *tls.Config) *ListenerMux {
 			// and decide if we need to wrap the connection itself with a TLS or not
 			go func(conn net.Conn) {
 				connMux := NewConnMux(conn)
-				if connMux.PeekProtocol() == "tls" {
+				if connMux.PeekProtocol() == protocolTLS {
-					l.acceptResCh <- ListenerMuxAcceptRes{conn: tls.Server(connMux, l.config)}
+					l.acceptResCh <- ListenerMuxAcceptRes{
+						conn: tls.Server(connMux, l.config),
+					}
 				} else {
-					l.acceptResCh <- ListenerMuxAcceptRes{conn: connMux}
+					l.acceptResCh <- ListenerMuxAcceptRes{
+						conn: connMux,
+					}
 				}
 			}(conn)
 		}
@@ -367,7 +377,7 @@ func (m *ServerMux) ListenAndServe(certFile, keyFile string) (err error) {
 		if tlsEnabled && r.TLS == nil {
 			// TLS is enabled but Request is not TLS configured
 			u := url.URL{
-				Scheme:   "https",
+				Scheme:   httpsScheme,
 				Opaque:   r.URL.Opaque,
 				User:     r.URL.User,
 				Host:     r.Host,

cmd/server-mux_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -153,7 +153,7 @@ func TestInitListeners(t *testing.T) {
 		}
 	}
 	// Windows doesn't have 'localhost' hostname.
-	if runtime.GOOS != "windows" {
+	if runtime.GOOS != globalWindowsOSName {
 		listeners, err := initListeners("localhost:"+getFreePort(), &tls.Config{})
 		if err != nil {
 			t.Fatalf("Test 3: Unable to initialize listeners %s", err)
@@ -395,7 +395,7 @@ func TestListenAndServeTLS(t *testing.T) {
 			res, _ := client.Get("http://" + addr)
 			// Without TLS we expect a re-direction from http to https
 			// And also the request is not rejected.
-			if res != nil && res.StatusCode == http.StatusOK && res.Request.URL.Scheme == "https" {
+			if res != nil && res.StatusCode == http.StatusOK && res.Request.URL.Scheme == httpsScheme {
 				okNoTLS = true
 			}
 		}

cmd/server-startup-msg.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -118,7 +118,7 @@ func printCLIAccessMsg(endPoint string) {
 
 	// Configure 'mc', following block prints platform specific information for minio client.
 	console.Println(colorBlue("\nCommand-line Access: ") + mcQuickStartGuide)
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		mcMessage := fmt.Sprintf("$ mc.exe config host add myminio %s %s %s", endPoint, cred.AccessKey, cred.SecretKey)
 		console.Println(fmt.Sprintf(getFormatStr(len(mcMessage), 3), mcMessage))
 	} else {

cmd/server-startup-msg_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -97,7 +97,7 @@ func TestCertificateNotExpired(t *testing.T) {
 
 // Test printing server common message.
 func TestPrintServerCommonMessage(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -109,7 +109,7 @@ func TestPrintServerCommonMessage(t *testing.T) {
 
 // Tests print cli access message.
 func TestPrintCLIAccessMsg(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -121,7 +121,7 @@ func TestPrintCLIAccessMsg(t *testing.T) {
 
 // Test print startup message.
 func TestPrintStartupMessage(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}

cmd/server-startup-utils.go

@@ -51,9 +51,9 @@ func getListenIPs(serverAddr string) (hosts []string, port string, err error) {
 // Finalizes the API endpoints based on the host list and port.
 func finalizeAPIEndpoints(apiServer *http.Server) (endPoints []string, err error) {
 	// Verify current scheme.
-	scheme := "http"
+	scheme := httpScheme
 	if globalIsSSL {
-		scheme = "https"
+		scheme = httpsScheme
 	}
 
 	// Get list of listen ips and port.

cmd/signature-v2_test.go

@@ -24,7 +24,7 @@ func TestResourceListSorting(t *testing.T) {
 
 // Tests presigned v2 signature.
 func TestDoesPresignedV2SignatureMatch(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal("Unable to initialize test config.")
 	}

cmd/signature-v4-parser_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -81,7 +81,7 @@ func validateCredentialfields(t *testing.T, testNum int, expectedCredentials cre
 // A valid format of creadential should be of the following format.
 // Credential = accessKey + "/"+ scope
 // where scope = string.Join([]string{  currTime.Format(yyyymmdd),
-// 			"us-east-1",
+// 			globalMinioDefaultRegion,
 //               	"s3",
 //		        "aws4_request",
 //                       },"/")

cmd/signature-v4-utils.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -49,12 +49,12 @@ func skipContentSha256Cksum(r *http.Request) bool {
 // isValidRegion - verify if incoming region value is valid with configured Region.
 func isValidRegion(reqRegion string, confRegion string) bool {
 	if confRegion == "" || confRegion == "US" {
-		confRegion = "us-east-1"
+		confRegion = globalMinioDefaultRegion
 	}
 	// Some older s3 clients set region as "US" instead of
-	// "us-east-1", handle it.
+	// globalMinioDefaultRegion, handle it.
 	if reqRegion == "US" {
-		reqRegion = "us-east-1"
+		reqRegion = globalMinioDefaultRegion
 	}
 	return reqRegion == confRegion
 }

cmd/signature-v4-utils_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -82,8 +82,8 @@ func TestIsValidRegion(t *testing.T) {
 	}{
 
 		{"", "", false},
-		{"us-east-1", "", true},
+		{globalMinioDefaultRegion, "", true},
-		{"us-east-1", "US", true},
+		{globalMinioDefaultRegion, "US", true},
 		{"us-west-1", "US", false},
 		{"us-west-1", "us-west-1", true},
 		// "US" was old naming convention for 'us-east-1'.

cmd/signature-v4.go

@@ -39,9 +39,10 @@ import (
 
 // AWS Signature Version '4' constants.
 const (
-	signV4Algorithm = "AWS4-HMAC-SHA256"
+	signV4Algorithm     = "AWS4-HMAC-SHA256"
-	iso8601Format   = "20060102T150405Z"
+	iso8601Format       = "20060102T150405Z"
-	yyyymmdd        = "20060102"
+	yyyymmdd            = "20060102"
+	presignedHostHeader = "host"
 )
 
 // getCanonicalHeaders generate a list of request headers with their values
@@ -52,7 +53,7 @@ func getCanonicalHeaders(signedHeaders http.Header, host string) string {
 		headers = append(headers, strings.ToLower(k))
 		vals[strings.ToLower(k)] = vv
 	}
-	headers = append(headers, "host")
+	headers = append(headers, presignedHostHeader)
 	sort.Strings(headers)
 
 	var buf bytes.Buffer
@@ -60,7 +61,7 @@ func getCanonicalHeaders(signedHeaders http.Header, host string) string {
 		buf.WriteString(k)
 		buf.WriteByte(':')
 		switch {
-		case k == "host":
+		case k == presignedHostHeader:
 			buf.WriteString(host)
 			fallthrough
 		default:
@@ -82,7 +83,7 @@ func getSignedHeaders(signedHeaders http.Header) string {
 	for k := range signedHeaders {
 		headers = append(headers, strings.ToLower(k))
 	}
-	headers = append(headers, "host")
+	headers = append(headers, presignedHostHeader)
 	sort.Strings(headers)
 	return strings.Join(headers, ";")
 }

cmd/signature-v4_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -50,7 +50,7 @@ func TestDoesPolicySignatureMatch(t *testing.T) {
 		// (1) It should fail if the access key is incorrect.
 		{
 			form: map[string]string{
-				"X-Amz-Credential": fmt.Sprintf(credentialTemplate, "EXAMPLEINVALIDEXAMPL", now.Format(yyyymmdd), "us-east-1"),
+				"X-Amz-Credential": fmt.Sprintf(credentialTemplate, "EXAMPLEINVALIDEXAMPL", now.Format(yyyymmdd), globalMinioDefaultRegion),
 			},
 			expected: ErrInvalidAccessKeyID,
 		},
@@ -64,14 +64,14 @@ func TestDoesPolicySignatureMatch(t *testing.T) {
 		// (3) It should fail if the date is invalid (or missing, in this case).
 		{
 			form: map[string]string{
-				"X-Amz-Credential": fmt.Sprintf(credentialTemplate, accessKey, now.Format(yyyymmdd), "us-east-1"),
+				"X-Amz-Credential": fmt.Sprintf(credentialTemplate, accessKey, now.Format(yyyymmdd), globalMinioDefaultRegion),
 			},
 			expected: ErrMalformedDate,
 		},
 		// (4) It should fail with a bad signature.
 		{
 			form: map[string]string{
-				"X-Amz-Credential": fmt.Sprintf(credentialTemplate, accessKey, now.Format(yyyymmdd), "us-east-1"),
+				"X-Amz-Credential": fmt.Sprintf(credentialTemplate, accessKey, now.Format(yyyymmdd), globalMinioDefaultRegion),
 				"X-Amz-Date":       now.Format(iso8601Format),
 				"X-Amz-Signature":  "invalidsignature",
 				"Policy":           "policy",
@@ -81,9 +81,9 @@ func TestDoesPolicySignatureMatch(t *testing.T) {
 		// (5) It should succeed if everything is correct.
 		{
 			form: map[string]string{
-				"X-Amz-Credential": fmt.Sprintf(credentialTemplate, accessKey, now.Format(yyyymmdd), "us-east-1"),
+				"X-Amz-Credential": fmt.Sprintf(credentialTemplate, accessKey, now.Format(yyyymmdd), globalMinioDefaultRegion),
 				"X-Amz-Date":       now.Format(iso8601Format),
-				"X-Amz-Signature":  getSignature(getSigningKey(serverConfig.GetCredential().SecretKey, now, "us-east-1"), "policy"),
+				"X-Amz-Signature":  getSignature(getSigningKey(serverConfig.GetCredential().SecretKey, now, globalMinioDefaultRegion), "policy"),
 				"Policy":           "policy",
 			},
 			expected: ErrNone,
@@ -100,7 +100,7 @@ func TestDoesPolicySignatureMatch(t *testing.T) {
 }
 
 func TestDoesPresignedSignatureMatch(t *testing.T) {
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -121,7 +121,7 @@ func TestDoesPresignedSignatureMatch(t *testing.T) {
 	}{
 		// (0) Should error without a set URL query.
 		{
-			region:   "us-east-1",
+			region:   globalMinioDefaultRegion,
 			expected: ErrInvalidQueryParams,
 		},
 		// (1) Should error on an invalid access key.
@@ -162,7 +162,7 @@ func TestDoesPresignedSignatureMatch(t *testing.T) {
 				"X-Amz-Credential":     fmt.Sprintf(credentialTemplate, accessKeyID, now.Format(yyyymmdd), "us-west-1"),
 				"X-Amz-Content-Sha256": payloadSHA256,
 			},
-			region:   "us-east-1",
+			region:   globalMinioDefaultRegion,
 			expected: ErrInvalidRegion,
 		},
 		// (4) Should NOT fail with an invalid region if it doesn't verify it.

cmd/storage-rpc-client_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -188,7 +188,7 @@ func TestRPCStorageClient(t *testing.T) {
 
 func (s *TestRPCStorageSuite) testRPCStorageClient(t *testing.T) {
 	// TODO - Fix below tests to run on windows.
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		return
 	}
 	s.testRPCStorageDisksInfo(t)

cmd/storage-rpc-server_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -35,7 +35,7 @@ type testStorageRPCServer struct {
 }
 
 func createTestStorageServer(t *testing.T) *testStorageRPCServer {
-	testPath, err := newTestConfig("us-east-1")
+	testPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("unable initialize config file, %s", err)
 	}

cmd/test-utils_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -110,7 +110,7 @@ func prepareXL() (ObjectLayer, []string, error) {
 
 // Initialize FS objects.
 func initFSObjects(disk string, t *testing.T) (obj ObjectLayer) {
-	newTestConfig("us-east-1")
+	newTestConfig(globalMinioDefaultRegion)
 	var err error
 	obj, err = newFSObjectLayer(disk)
 	if err != nil {
@@ -203,7 +203,7 @@ func UnstartedTestServer(t TestErrHandler, instanceType string) TestServer {
 		t.Fatal("Failed to create disks for the backend")
 	}
 
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("%s", err)
 	}
@@ -367,7 +367,7 @@ func StartTestStorageRPCServer(t TestErrHandler, instanceType string, diskN int)
 		t.Fatalf("%s", err)
 	}
 
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("%s", err)
 	}
@@ -402,7 +402,7 @@ func StartTestPeersRPCServer(t TestErrHandler, instanceType string) TestServer {
 		t.Fatalf("%s", err)
 	}
 
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("%s", err)
 	}
@@ -691,7 +691,7 @@ func signStreamingRequest(req *http.Request, accessKey, secretKey string, currTi
 	// Get scope.
 	scope := strings.Join([]string{
 		currTime.Format(yyyymmdd),
-		"us-east-1",
+		globalMinioDefaultRegion,
 		"s3",
 		"aws4_request",
 	}, "/")
@@ -701,7 +701,7 @@ func signStreamingRequest(req *http.Request, accessKey, secretKey string, currTi
 	stringToSign = stringToSign + getSHA256Hash([]byte(canonicalRequest))
 
 	date := sumHMAC([]byte("AWS4"+secretKey), []byte(currTime.Format(yyyymmdd)))
-	region := sumHMAC(date, []byte("us-east-1"))
+	region := sumHMAC(date, []byte(globalMinioDefaultRegion))
 	service := sumHMAC(region, []byte("s3"))
 	signingKey := sumHMAC(service, []byte("aws4_request"))
 
@@ -1919,7 +1919,7 @@ func ExecObjectLayerAPITest(t *testing.T, objAPITest objAPITestType, endpoints [
 	initNSLock(false)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Unable to initialize server config. %s", err)
 	}
@@ -1964,7 +1964,7 @@ type objTestDiskNotFoundType func(obj ObjectLayer, instanceType string, dirs []s
 func ExecObjectLayerTest(t TestErrHandler, objTest objTestType) {
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal("Unexpected error", err)
 	}
@@ -1989,7 +1989,7 @@ func ExecObjectLayerTest(t TestErrHandler, objTest objTestType) {
 // ExecObjectLayerDiskAlteredTest - executes object layer tests while altering
 // disks in between tests. Creates XL ObjectLayer instance and runs test for XL layer.
 func ExecObjectLayerDiskAlteredTest(t *testing.T, objTest objTestDiskNotFoundType) {
-	configPath, err := newTestConfig("us-east-1")
+	configPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal("Failed to create config directory", err)
 	}
@@ -2010,7 +2010,7 @@ type objTestStaleFilesType func(obj ObjectLayer, instanceType string, dirs []str
 // ExecObjectLayerStaleFilesTest - executes object layer tests those leaves stale
 // files/directories under .minio/tmp.  Creates XL ObjectLayer instance and runs test for XL layer.
 func ExecObjectLayerStaleFilesTest(t *testing.T, objTest objTestStaleFilesType) {
-	configPath, err := newTestConfig("us-east-1")
+	configPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal("Failed to create config directory", err)
 	}
@@ -2169,7 +2169,7 @@ func initTestBrowserPeerRPCEndPoint() http.Handler {
 }
 
 func StartTestBrowserPeerRPCServer(t TestErrHandler, instanceType string) TestServer {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("%s", err)
 	}
@@ -2190,7 +2190,7 @@ func StartTestBrowserPeerRPCServer(t TestErrHandler, instanceType string) TestSe
 }
 
 func StartTestS3PeerRPCServer(t TestErrHandler) (TestServer, []string) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("%s", err)
 	}

cmd/trie_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -55,7 +55,7 @@ func TestPrefixMatch(t *testing.T) {
 	trie = newTrie()
 
 	// Feed it some fodder: only 'minio' and 'miny-os' should trip the matcher.
-	trie.Insert("minio")
+	trie.Insert(globalMinioDefaultOwnerID)
 	trie.Insert("amazon")
 	trie.Insert("cheerio")
 	trie.Insert("miny-o's")
@@ -65,7 +65,7 @@ func TestPrefixMatch(t *testing.T) {
 		t.Errorf("expected two matches, got: %d", len(matches))
 	}
 
-	if matches[0] != "minio" && matches[1] != "minio" {
+	if matches[0] != globalMinioDefaultOwnerID && matches[1] != globalMinioDefaultOwnerID {
 		t.Errorf("expected one match to be 'minio', got: '%s' and '%s'", matches[0], matches[1])
 	}
 }

cmd/update-main.go

@@ -84,7 +84,7 @@ func parseReleaseData(data string) (time.Time, error) {
 	if len(releaseDateSplits) < 3 {
 		return time.Time{}, (errors.New("Update data malformed"))
 	}
-	if releaseDateSplits[0] != "minio" {
+	if releaseDateSplits[0] != globalMinioDefaultOwnerID {
 		return time.Time{}, (errors.New("Update data malformed, missing minio tag"))
 	}
 	// "OFFICIAL" tag is still kept for backward compatibility.
@@ -126,14 +126,14 @@ func isDocker() bool {
 
 // Check if the minio server binary was built with source.
 func isSourceBuild() bool {
-	return Version == "DEVELOPMENT.GOGET"
+	return Version == goGetTag
 }
 
 // Fetch the current version of the Minio server binary.
 func getCurrentMinioVersion() (current time.Time, err error) {
 	// For development builds we check for binary modTime
 	// to validate against latest minio server release.
-	if Version != "DEVELOPMENT.GOGET" {
+	if Version != goGetTag {
 		// Parse current minio version into RFC3339.
 		current, err = time.Parse(time.RFC3339, Version)
 		if err != nil {
@@ -164,7 +164,7 @@ func getReleaseUpdate(updateURL string, duration time.Duration) (updateMsg updat
 		downloadURL = "docker pull minio/minio"
 	} else {
 		switch runtime.GOOS {
-		case "windows":
+		case globalWindowsOSName:
 			// For windows.
 			downloadURL = newUpdateURLPrefix + "/minio.exe"
 		default:

cmd/update-notifier.go

@@ -66,7 +66,7 @@ func colorizeUpdateMessage(updateString string, newerThan time.Duration) string
 	default:
 		// on windows terminal turn off unicode characters.
 		var top, bottom, sideBar string
-		if runtime.GOOS == "windows" {
+		if runtime.GOOS == globalWindowsOSName {
 			top = yellow("*" + strings.Repeat("*", maxContentWidth) + "*")
 			bottom = yellow("*" + strings.Repeat("*", maxContentWidth) + "*")
 			sideBar = yellow("|")

cmd/url-sort_test.go

@@ -38,17 +38,17 @@ func TestSortByHostPath(t *testing.T) {
 			},
 			expected: []*url.URL{
 				{
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "abcd.com:9000",
 					Path:   "/a/b/c",
 				},
 				{
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "abcd.com:9000",
 					Path:   "/a/b/d",
 				},
 				{
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "abcd.com:9000",
 					Path:   "/a/b/e",
 				},
@@ -62,17 +62,17 @@ func TestSortByHostPath(t *testing.T) {
 			},
 			expected: []*url.URL{
 				{
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "abcd.com:9000",
 					Path:   "/a/b/c",
 				},
 				{
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "defg.com:9000",
 					Path:   "/a/b/c",
 				},
 				{
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "hijk.com:9000",
 					Path:   "/a/b/c",
 				},

cmd/utils.go

@@ -102,9 +102,15 @@ func urlPath2BucketObjectName(u *url.URL) (bucketName, objectName string) {
 	return bucketName, objectName
 }
 
+// URI scheme constants.
+const (
+	httpScheme  = "http"
+	httpsScheme = "https"
+)
+
 var portMap = map[string]string{
-	"http":  "80",
+	httpScheme:  "80",
-	"https": "443",
+	httpsScheme: "443",
 }
 
 // Given a string of the form "host", "host:port", or "[ipv6::address]:port",

cmd/utils_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -275,7 +275,7 @@ func TestStartProfiler(t *testing.T) {
 
 // Tests fetch local address.
 func TestLocalAddress(t *testing.T) {
-	if runtime.GOOS == "windows" {
+	if runtime.GOOS == globalWindowsOSName {
 		return
 	}
 
@@ -297,19 +297,19 @@ func TestLocalAddress(t *testing.T) {
 			isDistXL: true,
 			srvCmdConfig: serverCmdConfig{
 				endpoints: []*url.URL{{
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "localhost:9000",
 					Path:   "/mnt/disk1",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.1.2:9000",
 					Path:   "/mnt/disk2",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.2.1:9000",
 					Path:   "/mnt/disk3",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.2.2:9000",
 					Path:   "/mnt/disk4",
 				}},
@@ -338,19 +338,19 @@ func TestLocalAddress(t *testing.T) {
 			isDistXL: true,
 			srvCmdConfig: serverCmdConfig{
 				endpoints: []*url.URL{{
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.1.1:9000",
 					Path:   "/mnt/disk2",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.1.2:9000",
 					Path:   "/mnt/disk2",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.2.1:9000",
 					Path:   "/mnt/disk3",
 				}, {
-					Scheme: "http",
+					Scheme: httpScheme,
 					Host:   "1.1.2.2:9000",
 					Path:   "/mnt/disk4",
 				}},

cmd/web-handlers_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -130,7 +130,7 @@ func testLoginWebHandler(obj ObjectLayer, instanceType string, t TestErrHandler)
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -179,7 +179,7 @@ func testStorageInfoWebHandler(obj ObjectLayer, instanceType string, t TestErrHa
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -225,7 +225,7 @@ func testServerInfoWebHandler(obj ObjectLayer, instanceType string, t TestErrHan
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -271,7 +271,7 @@ func testMakeBucketWebHandler(obj ObjectLayer, instanceType string, t TestErrHan
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -331,7 +331,7 @@ func testListBucketsWebHandler(obj ObjectLayer, instanceType string, t TestErrHa
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -388,7 +388,7 @@ func testListObjectsWebHandler(obj ObjectLayer, instanceType string, t TestErrHa
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -492,7 +492,7 @@ func testRemoveObjectWebHandler(obj ObjectLayer, instanceType string, t TestErrH
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -568,7 +568,7 @@ func testGenerateAuthWebHandler(obj ObjectLayer, instanceType string, t TestErrH
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -614,7 +614,7 @@ func testSetAuthWebHandler(obj ObjectLayer, instanceType string, t TestErrHandle
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -675,7 +675,7 @@ func testGetAuthWebHandler(obj ObjectLayer, instanceType string, t TestErrHandle
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -720,7 +720,7 @@ func testUploadWebHandler(obj ObjectLayer, instanceType string, t TestErrHandler
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -811,7 +811,7 @@ func testDownloadWebHandler(obj ObjectLayer, instanceType string, t TestErrHandl
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -903,7 +903,7 @@ func testWebPresignedGetHandler(obj ObjectLayer, instanceType string, t TestErrH
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -1016,7 +1016,7 @@ func testWebGetBucketPolicyHandler(obj ObjectLayer, instanceType string, t TestE
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -1099,7 +1099,7 @@ func testWebListAllBucketPoliciesHandler(obj ObjectLayer, instanceType string, t
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -1205,7 +1205,7 @@ func testWebSetBucketPolicyHandler(obj ObjectLayer, instanceType string, t TestE
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}
@@ -1283,7 +1283,7 @@ func TestWebCheckAuthorization(t *testing.T) {
 	apiRouter := initTestWebRPCEndPoint(obj)
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal("Init Test config failed", err)
 	}
@@ -1365,7 +1365,7 @@ func TestWebObjectLayerNotReady(t *testing.T) {
 
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal("Init Test config failed", err)
 	}
@@ -1444,7 +1444,7 @@ func TestWebObjectLayerNotReady(t *testing.T) {
 
 // TestWebObjectLayerFaultyDisks - Test Web RPC responses with faulty disks
 func TestWebObjectLayerFaultyDisks(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -1469,7 +1469,7 @@ func TestWebObjectLayerFaultyDisks(t *testing.T) {
 
 	// initialize the server and obtain the credentials and root.
 	// credentials are necessary to sign the HTTP request.
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal("Init Test config failed", err)
 	}

cmd/xl-v1-healing_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@ import (
 
 // Tests healing of format XL.
 func TestHealFormatXL(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -271,7 +271,7 @@ func TestHealFormatXL(t *testing.T) {
 
 // Tests undoes and validates if the undoing completes successfully.
 func TestUndoMakeBucket(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -316,7 +316,7 @@ func TestUndoMakeBucket(t *testing.T) {
 
 // Tests quick healing of bucket and bucket metadata.
 func TestQuickHeal(t *testing.T) {
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatal(err)
 	}

cmd/xl-v1-list-objects-heal_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage (C) 2016 Minio, Inc.
+ * Minio Cloud Storage (C) 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -25,7 +25,7 @@ import (
 // TestListObjectsHeal - Tests ListObjectsHeal API for XL
 func TestListObjectsHeal(t *testing.T) {
 
-	rootPath, err := newTestConfig("us-east-1")
+	rootPath, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("Init Test config failed")
 	}

cmd/xl-v1-metadata.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2016, 2017, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -54,6 +54,14 @@ type checkSumInfo struct {
 	Hash      string `json:"hash"`
 }
 
+// Various algorithms supported by bit-rot protection feature.
+const (
+	// "sha256" is specifically used on arm64 bit platforms.
+	sha256Algo = "sha256"
+	// Rest of the platforms default to blake2b.
+	blake2bAlgo = "blake2b"
+)
+
 // Constant indicates current bit-rot algo used when creating objects.
 // Depending on the architecture we are choosing a different checksum.
 var bitRotAlgo = getDefaultBitRotAlgo()
@@ -71,10 +79,10 @@ func getDefaultBitRotAlgo() string {
 		// This would also allows erasure coded writes
 		// on ARM64 servers to be on-par with their
 		// counter-part X86_64 servers.
-		return "sha256"
+		return sha256Algo
 	default:
 		// Default for all other architectures we use blake2b.
-		return "blake2b"
+		return blake2bAlgo
 	}
 }
 
@@ -135,11 +143,22 @@ type xlMetaV1 struct {
 	Parts []objectPartInfo `json:"parts,omitempty"`
 }
 
+// XL metadata constants.
+const (
+	// XL meta version.
+	xlMetaVersion = "1.0.0"
+
+	// XL meta format string.
+	xlMetaFormat = "xl"
+
+	// Add new constants here.
+)
+
 // newXLMetaV1 - initializes new xlMetaV1, adds version, allocates a fresh erasure info.
 func newXLMetaV1(object string, dataBlocks, parityBlocks int) (xlMeta xlMetaV1) {
 	xlMeta = xlMetaV1{}
-	xlMeta.Version = "1.0.0"
+	xlMeta.Version = xlMetaVersion
-	xlMeta.Format = "xl"
+	xlMeta.Format = xlMetaFormat
 	xlMeta.Minio.Release = ReleaseTag
 	xlMeta.Erasure = erasureInfo{
 		Algorithm:    erasureAlgorithmKlauspost,
@@ -154,7 +173,7 @@ func newXLMetaV1(object string, dataBlocks, parityBlocks int) (xlMeta xlMetaV1)
 // IsValid - tells if the format is sane by validating the version
 // string and format style.
 func (m xlMetaV1) IsValid() bool {
-	return m.Version == "1.0.0" && m.Format == "xl"
+	return m.Version == xlMetaVersion && m.Format == xlMetaFormat
 }
 
 // objectPartIndex - returns the index of matching object part number.

cmd/xl-v1-multipart-common_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2014-2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2014-2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -23,7 +23,7 @@ import (
 
 func TestUpdateUploadJSON(t *testing.T) {
 	// Initialize configuration
-	root, err := newTestConfig("us-east-1")
+	root, err := newTestConfig(globalMinioDefaultRegion)
 	if err != nil {
 		t.Fatalf("%s", err)
 	}

cmd/xl-v1-utils_test.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -131,9 +131,9 @@ func TestHashOrder(t *testing.T) {
 // newTestXLMetaV1 - initializes new xlMetaV1, adds version, allocates a fresh erasure info and metadata.
 func newTestXLMetaV1() xlMetaV1 {
 	xlMeta := xlMetaV1{}
-	xlMeta.Version = "1.0.0"
+	xlMeta.Version = xlMetaVersion
-	xlMeta.Format = "xl"
+	xlMeta.Format = xlMetaFormat
-	xlMeta.Minio.Release = "1.0.0"
+	xlMeta.Minio.Release = "test"
 	xlMeta.Erasure = erasureInfo{
 		Algorithm:    "klauspost/reedsolomon/vandermonde",
 		DataBlocks:   5,