run gofumpt cleanup across code-base (#14015)

Makefile

@@ -20,6 +20,7 @@ help: ## print this help
 getdeps: ## fetch necessary dependencies
 	@mkdir -p ${GOPATH}/bin
 	@echo "Installing golangci-lint" && curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(GOPATH)/bin v1.43.0
+	@echo "Installing gofumpt" && go install mvdan.cc/gofumpt@latest
 	@echo "Installing msgp" && go install -v github.com/tinylib/msgp@v1.1.7-0.20211026165309-e818a1881b0e
 	@echo "Installing stringer" && go install -v golang.org/x/tools/cmd/stringer@latest
 
@@ -34,13 +35,14 @@ check-gen: ## check for updated autogenerated files
 
 lint: ## runs golangci-lint suite of linters
 	@echo "Running $@ check"
-	@GO111MODULE=on ${GOPATH}/bin/golangci-lint cache clean
-	@GO111MODULE=on ${GOPATH}/bin/golangci-lint run --build-tags kqueue --timeout=10m --config ./.golangci.yml
+	@${GOPATH}/bin/golangci-lint cache clean
+	@${GOPATH}/bin/golangci-lint run --build-tags kqueue --timeout=10m --config ./.golangci.yml
+	@${GOPATH}/bin/gofumpt -s -l .
 
 check: test
 test: verifiers build ## builds minio, runs linters, tests
 	@echo "Running unit tests"
-	@GO111MODULE=on CGO_ENABLED=0 go test -tags kqueue ./...
+	@CGO_ENABLED=0 go test -tags kqueue ./...
 
 test-upgrade: build
 	@echo "Running minio upgrade tests"
@@ -66,18 +68,18 @@ test-site-replication: install ## verify automatic site replication
 
 verify: ## verify minio various setups
 	@echo "Verifying build with race"
-	@GO111MODULE=on CGO_ENABLED=1 go build -race -tags kqueue -trimpath --ldflags "$(LDFLAGS)" -o $(PWD)/minio 1>/dev/null
+	@CGO_ENABLED=1 go build -race -tags kqueue -trimpath --ldflags "$(LDFLAGS)" -o $(PWD)/minio 1>/dev/null
 	@(env bash $(PWD)/buildscripts/verify-build.sh)
 
 verify-healing: ## verify healing and replacing disks with minio binary
 	@echo "Verify healing build with race"
-	@GO111MODULE=on CGO_ENABLED=1 go build -race -tags kqueue -trimpath --ldflags "$(LDFLAGS)" -o $(PWD)/minio 1>/dev/null
+	@CGO_ENABLED=1 go build -race -tags kqueue -trimpath --ldflags "$(LDFLAGS)" -o $(PWD)/minio 1>/dev/null
 	@(env bash $(PWD)/buildscripts/verify-healing.sh)
 	@(env bash $(PWD)/buildscripts/unaligned-healing.sh)
 
 build: checks ## builds minio to $(PWD)
 	@echo "Building minio binary to './minio'"
-	@GO111MODULE=on CGO_ENABLED=0 go build -tags kqueue -trimpath --ldflags "$(LDFLAGS)" -o $(PWD)/minio 1>/dev/null
+	@CGO_ENABLED=0 go build -tags kqueue -trimpath --ldflags "$(LDFLAGS)" -o $(PWD)/minio 1>/dev/null
 
 hotfix-vars:
 	$(eval LDFLAGS := $(shell MINIO_RELEASE="RELEASE" MINIO_HOTFIX="hotfix.$(shell git rev-parse --short HEAD)" go run buildscripts/gen-ldflags.go $(shell git describe --tags --abbrev=0 | \

cmd/admin-bucket-handlers.go

@@ -155,7 +155,7 @@ func (a adminAPIHandlers) SetRemoteTargetHandler(w http.ResponseWriter, r *http.
 		return
 	}
 	var target madmin.BucketTarget
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err = json.Unmarshal(reqBytes, &target); err != nil {
 		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErrWithErr(ErrAdminConfigBadJSON, err), r.URL)
 		return

cmd/admin-handlers-config-kv.go

@@ -170,7 +170,7 @@ func (a adminAPIHandlers) GetConfigKVHandler(w http.ResponseWriter, r *http.Requ
 
 	cfg := globalServerConfig.Clone()
 	vars := mux.Vars(r)
-	var buf = &bytes.Buffer{}
+	buf := &bytes.Buffer{}
 	cw := config.NewConfigWriteTo(cfg, vars["key"])
 	if _, err := cw.WriteTo(buf); err != nil {
 		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)

cmd/admin-handlers-site-replication.go

@@ -134,7 +134,6 @@ func (a adminAPIHandlers) SRPeerBucketOps(w http.ResponseWriter, r *http.Request
 		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
 		return
 	}
-
 }
 
 // SRPeerReplicateIAMItem - PUT /minio/admin/v3/site-replication/iam-item

cmd/admin-handlers-users.go

@@ -613,7 +613,7 @@ func (a adminAPIHandlers) AddServiceAccount(w http.ResponseWriter, r *http.Reque
 		}
 	}
 
-	var createResp = madmin.AddServiceAccountResp{
+	createResp := madmin.AddServiceAccountResp{
 		Credentials: madmin.Credentials{
 			AccessKey: newCred.AccessKey,
 			SecretKey: newCred.SecretKey,
@@ -814,7 +814,7 @@ func (a adminAPIHandlers) InfoServiceAccount(w http.ResponseWriter, r *http.Requ
 		return
 	}
 
-	var infoResp = madmin.InfoServiceAccountResp{
+	infoResp := madmin.InfoServiceAccountResp{
 		ParentUser:    svcAccount.ParentUser,
 		AccountStatus: svcAccount.Status,
 		ImpliedPolicy: impliedPolicy,
@@ -891,7 +891,7 @@ func (a adminAPIHandlers) ListServiceAccounts(w http.ResponseWriter, r *http.Req
 		serviceAccountsNames = append(serviceAccountsNames, svc.AccessKey)
 	}
 
-	var listResp = madmin.ListServiceAccountsResp{
+	listResp := madmin.ListServiceAccountsResp{
 		Accounts: serviceAccountsNames,
 	}
 
@@ -1251,7 +1251,7 @@ func (a adminAPIHandlers) ListBucketPolicies(w http.ResponseWriter, r *http.Requ
 		return
 	}
 
-	var newPolicies = make(map[string]iampolicy.Policy)
+	newPolicies := make(map[string]iampolicy.Policy)
 	for name, p := range policies {
 		_, err = json.Marshal(p)
 		if err != nil {
@@ -1283,7 +1283,7 @@ func (a adminAPIHandlers) ListCannedPolicies(w http.ResponseWriter, r *http.Requ
 		return
 	}
 
-	var newPolicies = make(map[string]iampolicy.Policy)
+	newPolicies := make(map[string]iampolicy.Policy)
 	for name, p := range policies {
 		_, err = json.Marshal(p)
 		if err != nil {

cmd/admin-handlers-users_test.go

@@ -653,7 +653,6 @@ func (s *TestSuiteIAM) TestCannedPolicies(c *check) {
 	if !strings.Contains(infoStr, `"s3:PutObject"`) || !strings.Contains(infoStr, ":"+bucket+"/") {
 		c.Fatalf("policy contains unexpected content!")
 	}
-
 }
 
 func (s *TestSuiteIAM) TestGroupAddRemove(c *check) {

cmd/admin-handlers.go

@@ -333,7 +333,6 @@ func (a adminAPIHandlers) StorageInfoHandler(w http.ResponseWriter, r *http.Requ
 	// Reply with storage information (across nodes in a
 	// distributed setup) as json.
 	writeSuccessResponseJSON(w, jsonBytes)
-
 }
 
 // DataUsageInfoHandler - GET /minio/admin/v3/datausage
@@ -1332,7 +1331,7 @@ func (a adminAPIHandlers) KMSKeyStatusHandler(w http.ResponseWriter, r *http.Req
 	if keyID == "" {
 		keyID = stat.DefaultKey
 	}
-	var response = madmin.KMSKeyStatus{
+	response := madmin.KMSKeyStatus{
 		KeyID: keyID,
 	}
 
@@ -1816,7 +1815,6 @@ func (a adminAPIHandlers) HealthInfoHandler(w http.ResponseWriter, r *http.Reque
 			anonNetwork[anonEndpoint] = status
 		}
 		return anonNetwork
-
 	}
 
 	anonymizeDrives := func(drives []madmin.Disk) []madmin.Disk {
@@ -1916,7 +1914,6 @@ func (a adminAPIHandlers) HealthInfoHandler(w http.ResponseWriter, r *http.Reque
 			return
 		}
 	}
-
 }
 
 func getTLSInfo() madmin.TLSInfo {
@@ -2042,7 +2039,6 @@ func assignPoolNumbers(servers []madmin.ServerProperties) {
 }
 
 func fetchLambdaInfo() []map[string][]madmin.TargetIDStatus {
-
 	lambdaMap := make(map[string][]madmin.TargetIDStatus)
 
 	for _, tgt := range globalConfigTargetList.Targets() {
@@ -2284,7 +2280,7 @@ func (a adminAPIHandlers) InspectDataHandler(w http.ResponseWriter, r *http.Requ
 		}
 		if si.Mode == 0 {
 			// Not, set it to default.
-			si.Mode = 0600
+			si.Mode = 0o600
 		}
 		header, zerr := zip.FileInfoHeader(dummyFileInfo{
 			name:    filename,

cmd/admin-handlers_test.go

@@ -236,8 +236,8 @@ func TestServiceRestartHandler(t *testing.T) {
 
 // buildAdminRequest - helper function to build an admin API request.
 func buildAdminRequest(queryVal url.Values, method, path string,
-	contentLength int64, bodySeeker io.ReadSeeker) (*http.Request, error) {
-
+	contentLength int64, bodySeeker io.ReadSeeker) (*http.Request, error,
+) {
 	req, err := newTestRequest(method,
 		adminPathPrefix+adminAPIVersionPrefix+path+"?"+queryVal.Encode(),
 		contentLength, bodySeeker)
@@ -380,5 +380,4 @@ func TestExtractHealInitParams(t *testing.T) {
 			}
 		}
 	}
-
 }

cmd/admin-heal-ops.go

@@ -278,8 +278,8 @@ func (ahs *allHealState) stopHealSequence(path string) ([]byte, APIError) {
 // background routine to clean up heal results after the
 // aforementioned duration.
 func (ahs *allHealState) LaunchNewHealSequence(h *healSequence, objAPI ObjectLayer) (
-	respBytes []byte, apiErr APIError, errMsg string) {
-
+	respBytes []byte, apiErr APIError, errMsg string,
+) {
 	if h.forceStarted {
 		_, apiErr = ahs.stopHealSequence(pathJoin(h.bucket, h.object))
 		if apiErr.Code != "" {
@@ -338,8 +338,8 @@ func (ahs *allHealState) LaunchNewHealSequence(h *healSequence, objAPI ObjectLay
 // representation. The clientToken helps ensure there aren't
 // conflicting clients fetching status.
 func (ahs *allHealState) PopHealStatusJSON(hpath string,
-	clientToken string) ([]byte, APIErrorCode) {
-
+	clientToken string) ([]byte, APIErrorCode,
+) {
 	// fetch heal state for given path
 	h, exists := ahs.getHealSequence(hpath)
 	if !exists {
@@ -453,8 +453,8 @@ type healSequence struct {
 // NewHealSequence - creates healSettings, assumes bucket and
 // objPrefix are already validated.
 func newHealSequence(ctx context.Context, bucket, objPrefix, clientAddr string,
-	hs madmin.HealOpts, forceStart bool) *healSequence {
-
+	hs madmin.HealOpts, forceStart bool,
+) *healSequence {
 	reqInfo := &logger.ReqInfo{RemoteHost: clientAddr, API: "Heal", BucketName: bucket}
 	reqInfo.AppendTags("prefix", objPrefix)
 	ctx, cancel := context.WithCancel(logger.SetReqInfo(ctx, reqInfo))

cmd/admin-router.go

@@ -38,7 +38,6 @@ type adminAPIHandlers struct{}
 
 // registerAdminRouter - Add handler functions for each service REST API routes.
 func registerAdminRouter(router *mux.Router, enableConfigOps bool) {
-
 	adminAPI := adminAPIHandlers{}
 	// Admin router
 	adminRouter := router.PathPrefix(adminPathPrefix).Subrouter()

cmd/api-errors.go

@@ -2125,7 +2125,7 @@ func toAPIError(ctx context.Context, err error) APIError {
 		return noError
 	}
 
-	var apiErr = errorCodes.ToAPIErr(toAPIErrorCode(ctx, err))
+	apiErr := errorCodes.ToAPIErr(toAPIErrorCode(ctx, err))
 	e, ok := err.(dns.ErrInvalidBucketName)
 	if ok {
 		code := toAPIErrorCode(ctx, e)
@@ -2238,7 +2238,6 @@ func toAPIError(ctx context.Context, err error) APIError {
 			// since S3 only sends one Error XML response.
 			if len(e.Errors) >= 1 {
 				apiErr.Code = e.Errors[0].Reason
-
 			}
 		case azblob.StorageError:
 			apiErr = APIError{

cmd/api-headers_test.go

@@ -23,7 +23,7 @@ import (
 
 func TestNewRequestID(t *testing.T) {
 	// Ensure that it returns an alphanumeric result of length 16.
-	var id = mustGetRequestID(UTCNow())
+	id := mustGetRequestID(UTCNow())
 
 	if len(id) != 16 {
 		t.Fail()

cmd/api-response.go

@@ -268,7 +268,6 @@ type StringMap map[string]string
 
 // MarshalXML - StringMap marshals into XML.
 func (s StringMap) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
-
 	tokens := []xml.Token{start}
 
 	for key, value := range s {
@@ -417,8 +416,8 @@ func getObjectLocation(r *http.Request, domains []string, bucket, object string)
 // serialized to match XML and JSON API spec output.
 func generateListBucketsResponse(buckets []BucketInfo) ListBucketsResponse {
 	listbuckets := make([]Bucket, 0, len(buckets))
-	var data = ListBucketsResponse{}
-	var owner = Owner{
+	data := ListBucketsResponse{}
+	owner := Owner{
 		ID:          globalMinioDefaultOwnerID,
 		DisplayName: "minio",
 	}
@@ -439,14 +438,14 @@ func generateListBucketsResponse(buckets []BucketInfo) ListBucketsResponse {
 // generates an ListBucketVersions response for the said bucket with other enumerated options.
 func generateListVersionsResponse(bucket, prefix, marker, versionIDMarker, delimiter, encodingType string, maxKeys int, resp ListObjectVersionsInfo) ListVersionsResponse {
 	versions := make([]ObjectVersion, 0, len(resp.Objects))
-	var owner = Owner{
+	owner := Owner{
 		ID:          globalMinioDefaultOwnerID,
 		DisplayName: "minio",
 	}
-	var data = ListVersionsResponse{}
+	data := ListVersionsResponse{}
 
 	for _, object := range resp.Objects {
-		var content = ObjectVersion{}
+		content := ObjectVersion{}
 		if object.Name == "" {
 			continue
 		}
@@ -486,7 +485,7 @@ func generateListVersionsResponse(bucket, prefix, marker, versionIDMarker, delim
 
 	prefixes := make([]CommonPrefix, 0, len(resp.Prefixes))
 	for _, prefix := range resp.Prefixes {
-		var prefixItem = CommonPrefix{}
+		prefixItem := CommonPrefix{}
 		prefixItem.Prefix = s3EncodeName(prefix, encodingType)
 		prefixes = append(prefixes, prefixItem)
 	}
@@ -497,14 +496,14 @@ func generateListVersionsResponse(bucket, prefix, marker, versionIDMarker, delim
 // generates an ListObjectsV1 response for the said bucket with other enumerated options.
 func generateListObjectsV1Response(bucket, prefix, marker, delimiter, encodingType string, maxKeys int, resp ListObjectsInfo) ListObjectsResponse {
 	contents := make([]Object, 0, len(resp.Objects))
-	var owner = Owner{
+	owner := Owner{
 		ID:          globalMinioDefaultOwnerID,
 		DisplayName: "minio",
 	}
-	var data = ListObjectsResponse{}
+	data := ListObjectsResponse{}
 
 	for _, object := range resp.Objects {
-		var content = Object{}
+		content := Object{}
 		if object.Name == "" {
 			continue
 		}
@@ -535,7 +534,7 @@ func generateListObjectsV1Response(bucket, prefix, marker, delimiter, encodingTy
 
 	prefixes := make([]CommonPrefix, 0, len(resp.Prefixes))
 	for _, prefix := range resp.Prefixes {
-		var prefixItem = CommonPrefix{}
+		prefixItem := CommonPrefix{}
 		prefixItem.Prefix = s3EncodeName(prefix, encodingType)
 		prefixes = append(prefixes, prefixItem)
 	}
@@ -546,14 +545,14 @@ func generateListObjectsV1Response(bucket, prefix, marker, delimiter, encodingTy
 // generates an ListObjectsV2 response for the said bucket with other enumerated options.
 func generateListObjectsV2Response(bucket, prefix, token, nextToken, startAfter, delimiter, encodingType string, fetchOwner, isTruncated bool, maxKeys int, objects []ObjectInfo, prefixes []string, metadata bool) ListObjectsV2Response {
 	contents := make([]Object, 0, len(objects))
-	var owner = Owner{
+	owner := Owner{
 		ID:          globalMinioDefaultOwnerID,
 		DisplayName: "minio",
 	}
-	var data = ListObjectsV2Response{}
+	data := ListObjectsV2Response{}
 
 	for _, object := range objects {
-		var content = Object{}
+		content := Object{}
 		if object.Name == "" {
 			continue
 		}
@@ -608,7 +607,7 @@ func generateListObjectsV2Response(bucket, prefix, token, nextToken, startAfter,
 
 	commonPrefixes := make([]CommonPrefix, 0, len(prefixes))
 	for _, prefix := range prefixes {
-		var prefixItem = CommonPrefix{}
+		prefixItem := CommonPrefix{}
 		prefixItem.Prefix = s3EncodeName(prefix, encodingType)
 		commonPrefixes = append(commonPrefixes, prefixItem)
 	}
@@ -821,8 +820,8 @@ func writeErrorResponseJSON(ctx context.Context, w http.ResponseWriter, err APIE
 // but accepts the error message directly (this allows messages to be
 // dynamically generated.)
 func writeCustomErrorResponseJSON(ctx context.Context, w http.ResponseWriter, err APIError,
-	errBody string, reqURL *url.URL) {
-
+	errBody string, reqURL *url.URL,
+) {
 	reqInfo := logger.GetReqInfo(ctx)
 	errorResponse := APIErrorResponse{
 		Code:       err.Code,

cmd/api-router.go

@@ -484,7 +484,6 @@ func registerAPIRouter(router *mux.Router) {
 	// If none of the routes match add default error handler routes
 	apiRouter.NotFoundHandler = collectAPIStats("notfound", httpTraceAll(errorResponseHandler))
 	apiRouter.MethodNotAllowedHandler = collectAPIStats("methodnotallowed", httpTraceAll(methodNotAllowedHandler("S3")))
-
 }
 
 // corsHandler handler for CORS (Cross Origin Resource Sharing)

cmd/api-utils_test.go

@@ -44,7 +44,6 @@ func TestS3EncodeName(t *testing.T) {
 			if testCase.expectedOutput != outputText {
 				t.Errorf("Expected `%s`, got `%s`", testCase.expectedOutput, outputText)
 			}
-
 		})
 	}
 }

cmd/background-heal-ops.go

@@ -115,7 +115,6 @@ func newHealRoutine() *healRoutine {
 		tasks:   make(chan healTask),
 		workers: workers,
 	}
-
 }
 
 // healDiskFormat - heals format.json, return value indicates if a

cmd/background-newdisks-heal-ops.go

@@ -305,7 +305,6 @@ func getLocalDisksToHeal() (disksToHeal Endpoints) {
 		}
 	}
 	return disksToHeal
-
 }
 
 // monitorLocalDisksAndHeal - ensures that detected new disks are healed

cmd/bitrot.go

@@ -212,7 +212,7 @@ func bitrotVerify(r io.Reader, wantSize, partSize int64, algo BitrotAlgorithm, w
 // bitrotSelfTest tries to catch any issue in the bitrot implementation
 // early instead of silently corrupting data.
 func bitrotSelfTest() {
-	var checksums = map[BitrotAlgorithm]string{
+	checksums := map[BitrotAlgorithm]string{
 		SHA256:          "a7677ff19e0182e4d52e3a3db727804abc82a5818749336369552e54b838b004",
 		BLAKE2b512:      "e519b7d84b1c3c917985f544773a35cf265dcab10948be3550320d156bab612124a5ae2ae5a8c73c0eea360f68b0e28136f26e858756dbfe7375a7389f26c669",
 		HighwayHash256:  "39c0407ed3f01b18d22c85db4aeff11e060ca5f43131b0126731ca197cd42313",

cmd/bucket-handlers.go

@@ -449,7 +449,7 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 		return
 	}
 
-	var objectsToDelete = map[ObjectToDelete]int{}
+	objectsToDelete := map[ObjectToDelete]int{}
 	getObjectInfoFn := objectAPI.GetObjectInfo
 	if api.CacheAPI() != nil {
 		getObjectInfoFn = api.CacheAPI().GetObjectInfo
@@ -606,8 +606,8 @@ func (api objectAPIHandlers) DeleteMultipleObjectsHandler(w http.ResponseWriter,
 	}
 
 	// Generate response
-	var deleteErrors = make([]DeleteError, 0, len(deleteObjectsReq.Objects))
-	var deletedObjects = make([]DeletedObject, 0, len(deleteObjectsReq.Objects))
+	deleteErrors := make([]DeleteError, 0, len(deleteObjectsReq.Objects))
+	deletedObjects := make([]DeletedObject, 0, len(deleteObjectsReq.Objects))
 	for _, deleteResult := range deleteResults {
 		if deleteResult.errInfo.Code != "" {
 			deleteErrors = append(deleteErrors, deleteResult.errInfo)
@@ -1806,7 +1806,8 @@ func (api objectAPIHandlers) ResetBucketReplicationStateHandler(w http.ResponseW
 	tgtArns := config.FilterTargetArns(
 		replication.ObjectOpts{
 			OpType:    replication.ResyncReplicationType,
-			TargetArn: arn})
+			TargetArn: arn,
+		})
 
 	if len(tgtArns) == 0 {
 		writeErrorResponseJSON(ctx, w, errorCodes.ToAPIErrWithErr(ErrBadRequest, InvalidArgument{

cmd/bucket-handlers_test.go

@@ -81,8 +81,8 @@ func TestGetBucketLocationHandler(t *testing.T) {
 }
 
 func testGetBucketLocationHandler(obj ObjectLayer, instanceType, bucketName string, apiRouter http.Handler,
-	credentials auth.Credentials, t *testing.T) {
-
+	credentials auth.Credentials, t *testing.T,
+) {
 	// test cases with sample input and expected output.
 	testCases := []struct {
 		bucketName string
@@ -163,7 +163,6 @@ func testGetBucketLocationHandler(obj ObjectLayer, instanceType, bucketName stri
 		recV2 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV2, err := newTestSignedRequestV2(http.MethodGet, getBucketLocationURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey, nil)
-
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, instanceType, err)
 		}
@@ -210,7 +209,6 @@ func testGetBucketLocationHandler(obj ObjectLayer, instanceType, bucketName stri
 
 	nilBucket := "dummy-bucket"
 	nilReq, err := newTestRequest(http.MethodGet, getBucketLocationURL("", nilBucket), 0, nil)
-
 	if err != nil {
 		t.Errorf("MinIO %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
 	}
@@ -225,8 +223,8 @@ func TestHeadBucketHandler(t *testing.T) {
 }
 
 func testHeadBucketHandler(obj ObjectLayer, instanceType, bucketName string, apiRouter http.Handler,
-	credentials auth.Credentials, t *testing.T) {
-
+	credentials auth.Credentials, t *testing.T,
+) {
 	// test cases with sample input and expected output.
 	testCases := []struct {
 		bucketName string
@@ -282,7 +280,6 @@ func testHeadBucketHandler(obj ObjectLayer, instanceType, bucketName string, api
 		recV2 := httptest.NewRecorder()
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV2, err := newTestSignedRequestV2(http.MethodHead, getHEADBucketURL("", testCase.bucketName), 0, nil, testCase.accessKey, testCase.secretKey, nil)
-
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, instanceType, err)
 		}
@@ -297,7 +294,6 @@ func testHeadBucketHandler(obj ObjectLayer, instanceType, bucketName string, api
 
 	// Test for Anonymous/unsigned http request.
 	anonReq, err := newTestRequest(http.MethodHead, getHEADBucketURL("", bucketName), 0, nil)
-
 	if err != nil {
 		t.Fatalf("MinIO %s: Failed to create an anonymous request for bucket \"%s\": <ERROR> %v",
 			instanceType, bucketName, err)
@@ -315,7 +311,6 @@ func testHeadBucketHandler(obj ObjectLayer, instanceType, bucketName string, api
 
 	nilBucket := "dummy-bucket"
 	nilReq, err := newTestRequest(http.MethodHead, getHEADBucketURL("", nilBucket), 0, nil)
-
 	if err != nil {
 		t.Errorf("MinIO %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
 	}
@@ -331,8 +326,8 @@ func TestListMultipartUploadsHandler(t *testing.T) {
 
 // testListMultipartUploadsHandler - Tests validate listing of multipart uploads.
 func testListMultipartUploadsHandler(obj ObjectLayer, instanceType, bucketName string, apiRouter http.Handler,
-	credentials auth.Credentials, t *testing.T) {
-
+	credentials auth.Credentials, t *testing.T,
+) {
 	// Collection of non-exhaustive ListMultipartUploads test cases, valid errors
 	// and success responses.
 	testCases := []struct {
@@ -552,7 +547,6 @@ func testListMultipartUploadsHandler(obj ObjectLayer, instanceType, bucketName s
 		testCases[6].uploadIDMarker, testCases[6].delimiter, testCases[6].maxUploads)
 
 	nilReq, err := newTestRequest(http.MethodGet, url, 0, nil)
-
 	if err != nil {
 		t.Errorf("MinIO %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
 	}
@@ -568,8 +562,8 @@ func TestListBucketsHandler(t *testing.T) {
 
 // testListBucketsHandler - Tests validate listing of buckets.
 func testListBucketsHandler(obj ObjectLayer, instanceType, bucketName string, apiRouter http.Handler,
-	credentials auth.Credentials, t *testing.T) {
-
+	credentials auth.Credentials, t *testing.T,
+) {
 	testCases := []struct {
 		bucketName         string
 		accessKey          string
@@ -615,7 +609,6 @@ func testListBucketsHandler(obj ObjectLayer, instanceType, bucketName string, ap
 
 		// verify response for V2 signed HTTP request.
 		reqV2, err := newTestSignedRequestV2(http.MethodGet, getListBucketURL(""), 0, nil, testCase.accessKey, testCase.secretKey, nil)
-
 		if err != nil {
 			t.Fatalf("Test %d: %s: Failed to create HTTP request for PutBucketPolicyHandler: <ERROR> %v", i+1, instanceType, err)
 		}
@@ -630,7 +623,6 @@ func testListBucketsHandler(obj ObjectLayer, instanceType, bucketName string, ap
 	// Test for Anonymous/unsigned http request.
 	// ListBucketsHandler doesn't support bucket policies, setting the policies shouldn't make a difference.
 	anonReq, err := newTestRequest(http.MethodGet, getListBucketURL(""), 0, nil)
-
 	if err != nil {
 		t.Fatalf("MinIO %s: Failed to create an anonymous request.", instanceType)
 	}
@@ -646,7 +638,6 @@ func testListBucketsHandler(obj ObjectLayer, instanceType, bucketName string, ap
 	// The only aim is to generate an HTTP request in a way that the relevant/registered end point is evoked/called.
 
 	nilReq, err := newTestRequest(http.MethodGet, getListBucketURL(""), 0, nil)
-
 	if err != nil {
 		t.Errorf("MinIO %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
 	}
@@ -661,8 +652,8 @@ func TestAPIDeleteMultipleObjectsHandler(t *testing.T) {
 }
 
 func testAPIDeleteMultipleObjectsHandler(obj ObjectLayer, instanceType, bucketName string, apiRouter http.Handler,
-	credentials auth.Credentials, t *testing.T) {
-
+	credentials auth.Credentials, t *testing.T,
+) {
 	var err error
 
 	contentBytes := []byte("hello")

cmd/bucket-lifecycle-handlers_test.go

@@ -150,8 +150,8 @@ func TestBucketLifecycle(t *testing.T) {
 // Simple tests of bucket lifecycle: PUT, GET, DELETE.
 // Tests are related and the order is important.
 func testBucketLifecycleHandlers(obj ObjectLayer, instanceType, bucketName string, apiRouter http.Handler,
-	creds auth.Credentials, t *testing.T) {
-
+	creds auth.Credentials, t *testing.T,
+) {
 	// test cases with sample input and expected output.
 	testCases := []struct {
 		method     string
@@ -266,8 +266,8 @@ func testBucketLifecycle(obj ObjectLayer, instanceType, bucketName string, apiRo
 		lifecycleResponse  []byte
 		errorResponse      APIErrorResponse
 		shouldPass         bool
-	}) {
-
+	},
+) {
 	for i, testCase := range testCases {
 		// initialize httptest Recorder, this records any mutations to response writer inside the handler.
 		rec := httptest.NewRecorder()

cmd/bucket-lifecycle.go

@@ -178,9 +178,7 @@ func (t *transitionState) queueTransitionTask(oi ObjectInfo) {
 	}
 }
 
-var (
-	globalTransitionState *transitionState
-)
+var globalTransitionState *transitionState
 
 func newTransitionState(ctx context.Context, objAPI ObjectLayer) *transitionState {
 	return &transitionState{
@@ -466,9 +464,7 @@ func (sp *SelectParameters) IsEmpty() bool {
 	return sp == nil
 }
 
-var (
-	selectParamsXMLName = "SelectParameters"
-)
+var selectParamsXMLName = "SelectParameters"
 
 // UnmarshalXML - decodes XML data.
 func (sp *SelectParameters) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {

cmd/bucket-policy-handlers_test.go

@@ -105,7 +105,7 @@ func testCreateBucket(obj ObjectLayer, instanceType, bucketName string, apiRoute
 	bucketName1 := fmt.Sprintf("%s-1", bucketName)
 
 	const n = 100
-	var start = make(chan struct{})
+	start := make(chan struct{})
 	var ok, errs int
 	var wg sync.WaitGroup
 	var mu sync.Mutex
@@ -147,8 +147,8 @@ func TestPutBucketPolicyHandler(t *testing.T) {
 
 // testPutBucketPolicyHandler - Test for Bucket policy end point.
 func testPutBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string, apiRouter http.Handler,
-	credentials auth.Credentials, t *testing.T) {
-
+	credentials auth.Credentials, t *testing.T,
+) {
 	bucketName1 := fmt.Sprintf("%s-1", bucketName)
 	if err := obj.MakeBucketWithLocation(GlobalContext, bucketName1, BucketOptions{}); err != nil {
 		t.Fatal(err)
@@ -333,7 +333,6 @@ func testPutBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 	// create unsigned HTTP request for PutBucketPolicyHandler.
 	anonReq, err := newTestRequest(http.MethodPut, getPutPolicyURL("", bucketName),
 		int64(len(bucketPolicyStr)), bytes.NewReader([]byte(bucketPolicyStr)))
-
 	if err != nil {
 		t.Fatalf("MinIO %s: Failed to create an anonymous request for bucket \"%s\": <ERROR> %v",
 			instanceType, bucketName, err)
@@ -352,14 +351,12 @@ func testPutBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 
 	nilReq, err := newTestSignedRequestV4(http.MethodPut, getPutPolicyURL("", nilBucket),
 		0, nil, "", "", nil)
-
 	if err != nil {
 		t.Errorf("MinIO %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
 	}
 	// execute the object layer set to `nil` test.
 	// `ExecObjectLayerAPINilTest` manages the operation.
 	ExecObjectLayerAPINilTest(t, nilBucket, "", instanceType, apiRouter, nilReq)
-
 }
 
 // Wrapper for calling Get Bucket Policy HTTP handler tests for both Erasure multiple disks and single node setup.
@@ -465,7 +462,6 @@ func testGetBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 		// construct HTTP request for PUT bucket policy endpoint.
 		reqV4, err := newTestSignedRequestV4(http.MethodGet, getGetPolicyURL("", testCase.bucketName),
 			0, nil, testCase.accessKey, testCase.secretKey, nil)
-
 		if err != nil {
 			t.Fatalf("Test %d: Failed to create HTTP request for GetBucketPolicyHandler: <ERROR> %v", i+1, err)
 		}
@@ -540,7 +536,6 @@ func testGetBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 	// Bucket policy related functions doesn't support anonymous requests, setting policies shouldn't make a difference.
 	// create unsigned HTTP request for PutBucketPolicyHandler.
 	anonReq, err := newTestRequest(http.MethodGet, getPutPolicyURL("", bucketName), 0, nil)
-
 	if err != nil {
 		t.Fatalf("MinIO %s: Failed to create an anonymous request for bucket \"%s\": <ERROR> %v",
 			instanceType, bucketName, err)
@@ -559,7 +554,6 @@ func testGetBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string
 
 	nilReq, err := newTestSignedRequestV4(http.MethodGet, getGetPolicyURL("", nilBucket),
 		0, nil, "", "", nil)
-
 	if err != nil {
 		t.Errorf("MinIO %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
 	}
@@ -575,8 +569,8 @@ func TestDeleteBucketPolicyHandler(t *testing.T) {
 
 // testDeleteBucketPolicyHandler - Test for Delete bucket policy end point.
 func testDeleteBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName string, apiRouter http.Handler,
-	credentials auth.Credentials, t *testing.T) {
-
+	credentials auth.Credentials, t *testing.T,
+) {
 	// template for constructing HTTP request body for PUT bucket policy.
 	bucketPolicyTemplate := `{
     "Version": "2012-10-17",
@@ -743,7 +737,6 @@ func testDeleteBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName str
 	// Bucket policy related functions doesn't support anonymous requests, setting policies shouldn't make a difference.
 	// create unsigned HTTP request for PutBucketPolicyHandler.
 	anonReq, err := newTestRequest(http.MethodDelete, getPutPolicyURL("", bucketName), 0, nil)
-
 	if err != nil {
 		t.Fatalf("MinIO %s: Failed to create an anonymous request for bucket \"%s\": <ERROR> %v",
 			instanceType, bucketName, err)
@@ -762,7 +755,6 @@ func testDeleteBucketPolicyHandler(obj ObjectLayer, instanceType, bucketName str
 
 	nilReq, err := newTestSignedRequestV4(http.MethodDelete, getDeletePolicyURL("", nilBucket),
 		0, nil, "", "", nil)
-
 	if err != nil {
 		t.Errorf("MinIO %s: Failed to create HTTP request for testing the response when object Layer is set to `nil`.", instanceType)
 	}

cmd/bucket-policy.go

@@ -200,7 +200,7 @@ func PolicyToBucketAccessPolicy(bucketPolicy *policy.Policy) (*miniogopolicy.Buc
 	}
 
 	var policyInfo miniogopolicy.BucketAccessPolicy
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err = json.Unmarshal(data, &policyInfo); err != nil {
 		// This should not happen because data is valid to JSON data.
 		return nil, err
@@ -218,7 +218,7 @@ func BucketAccessPolicyToPolicy(policyInfo *miniogopolicy.BucketAccessPolicy) (*
 	}
 
 	var bucketPolicy policy.Policy
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err = json.Unmarshal(data, &bucketPolicy); err != nil {
 		// This should not happen because data is valid to JSON data.
 		return nil, err

cmd/bucket-replication-stats.go

@@ -55,7 +55,6 @@ func (r *ReplicationStats) Delete(bucket string) {
 	r.ulock.Lock()
 	defer r.ulock.Unlock()
 	delete(r.UsageCache, bucket)
-
 }
 
 // UpdateReplicaStat updates in-memory replica statistics with new values.

cmd/bucket-replication-utils_test.go

@@ -77,7 +77,8 @@ var replicatedInfosTests = []struct {
 				ReplicationStatus:     replication.Failed,
 				OpType:                replication.ObjectReplicationType,
 				ReplicationAction:     replicateAll,
-			}},
+			},
+		},
 		expectedCompletedSize:             249,
 		expectedReplicationStatusInternal: "arn1=COMPLETED;arn2=FAILED;",
 		expectedReplicationStatus:         replication.Failed,
@@ -102,7 +103,8 @@ var replicatedInfosTests = []struct {
 				ReplicationStatus:     replication.Failed,
 				OpType:                replication.ObjectReplicationType,
 				ReplicationAction:     replicateAll,
-			}},
+			},
+		},
 		expectedCompletedSize:             0,
 		expectedReplicationStatusInternal: "arn1=PENDING;arn2=FAILED;",
 		expectedReplicationStatus:         replication.Failed,
@@ -182,7 +184,6 @@ var parseReplicationDecisionTest = []struct {
 func TestParseReplicateDecision(t *testing.T) {
 	for i, test := range parseReplicationDecisionTest {
 		dsc, err := parseReplicateDecision(test.expDsc.String())
-
 		if err != nil {
 			if test.expErr != err {
 				t.Errorf("Test%d (%s): Expected parse error got %t , want %t", i+1, test.name, err, test.expErr)

cmd/bucket-replication.go

@@ -139,6 +139,7 @@ func (o mustReplicateOptions) ReplicationStatus() (s replication.StatusType) {
 	}
 	return s
 }
+
 func (o mustReplicateOptions) isExistingObjectReplication() bool {
 	return o.opType == replication.ExistingObjectReplicationType
 }
@@ -146,6 +147,7 @@ func (o mustReplicateOptions) isExistingObjectReplication() bool {
 func (o mustReplicateOptions) isMetadataReplication() bool {
 	return o.opType == replication.MetadataReplicationType
 }
+
 func getMustReplicateOptions(o ObjectInfo, op replication.Type, opts ObjectOptions) mustReplicateOptions {
 	if !op.Valid() {
 		op = replication.ObjectReplicationType
@@ -441,7 +443,7 @@ func replicateDelete(ctx context.Context, dobj DeletedObjectReplicationInfo, obj
 		}
 	}
 
-	var eventName = event.ObjectReplicationComplete
+	eventName := event.ObjectReplicationComplete
 	if replicationStatus == replication.Failed {
 		eventName = event.ObjectReplicationFailed
 	}
@@ -523,7 +525,8 @@ func replicateDeleteToTarget(ctx context.Context, dobj DeletedObjectReplicationI
 			VersionID: versionID,
 			Internal: miniogo.AdvancedGetOptions{
 				ReplicationProxyRequest: "false",
-			}}); isErrMethodNotAllowed(ErrorRespToObjectError(err, dobj.Bucket, dobj.ObjectName)) {
+			},
+		}); isErrMethodNotAllowed(ErrorRespToObjectError(err, dobj.Bucket, dobj.ObjectName)) {
 			if dobj.VersionID == "" {
 				rinfo.ReplicationStatus = replication.Completed
 				return
@@ -902,7 +905,7 @@ func replicateObject(ctx context.Context, ri ReplicateObjectInfo, objectAPI Obje
 	// FIXME: add support for missing replication events
 	// - event.ObjectReplicationMissedThreshold
 	// - event.ObjectReplicationReplicatedAfterThreshold
-	var eventName = event.ObjectReplicationComplete
+	eventName := event.ObjectReplicationComplete
 	if rinfos.ReplicationStatus() == replication.Failed {
 		eventName = event.ObjectReplicationFailed
 	}
@@ -1058,7 +1061,8 @@ func replicateObjectToTarget(ctx context.Context, ri ReplicateObjectInfo, object
 		VersionID: objInfo.VersionID,
 		Internal: miniogo.AdvancedGetOptions{
 			ReplicationProxyRequest: "false",
-		}})
+		},
+	})
 	if cerr == nil {
 		rAction = getReplicationAction(objInfo, oi, ri.OpType)
 		rinfo.ReplicationStatus = replication.Completed
@@ -1117,7 +1121,8 @@ func replicateObjectToTarget(ctx context.Context, ri ReplicateObjectInfo, object
 			Internal: miniogo.AdvancedPutOptions{
 				SourceVersionID:    objInfo.VersionID,
 				ReplicationRequest: true, // always set this to distinguish between `mc mirror` replication and serverside
-			}}
+			},
+		}
 		if _, err = c.CopyObject(ctx, tgt.Bucket, object, tgt.Bucket, object, getCopyObjMetadata(objInfo, tgt.StorageClass), srcOpts, dstOpts); err != nil {
 			rinfo.ReplicationStatus = replication.Failed
 			logger.LogIf(ctx, fmt.Errorf("Unable to replicate metadata for object %s/%s(%s): %s", bucket, objInfo.Name, objInfo.VersionID, err))
@@ -1213,7 +1218,8 @@ func replicateObjectWithMultipart(ctx context.Context, c *miniogo.Core, bucket,
 			SourceMTime: objInfo.ModTime,
 			// always set this to distinguish between `mc mirror` replication and serverside
 			ReplicationRequest: true,
-		}})
+		},
+	})
 	return err
 }
 
@@ -1357,7 +1363,6 @@ func (p *ReplicationPool) AddWorker() {
 			return
 		}
 	}
-
 }
 
 // AddExistingObjectReplicateWorker adds a worker to queue existing objects that need to be sync'd
@@ -1671,6 +1676,7 @@ type replicationConfig struct {
 func (c replicationConfig) Empty() bool {
 	return c.Config == nil
 }
+
 func (c replicationConfig) Replicate(opts replication.ObjectOpts) bool {
 	return c.Config.Replicate(opts)
 }
@@ -1694,7 +1700,8 @@ func (c replicationConfig) Resync(ctx context.Context, oi ObjectInfo, dsc *Repli
 			DeleteMarker:   oi.DeleteMarker,
 			VersionID:      oi.VersionID,
 			OpType:         replication.DeleteReplicationType,
-			ExistingObject: true}
+			ExistingObject: true,
+		}
 
 		tgtArns := c.Config.FilterTargetArns(opts)
 		// indicates no matching target with Existing object replication enabled.

cmd/bucket-replication_test.go

@@ -75,7 +75,8 @@ var replicationConfigTests = []struct {
 	},
 	{ // 4. existing object replication enabled, versioning enabled; no reset in progress
 		name: "existing object replication enabled, versioning enabled; no reset in progress",
-		info: ObjectInfo{Size: 100,
+		info: ObjectInfo{
+			Size:              100,
 			ReplicationStatus: replication.Completed,
 			VersionID:         "a3348c34-c352-4498-82f0-1098e8b34df9",
 		},
@@ -93,174 +94,192 @@ func TestReplicationResync(t *testing.T) {
 	}
 }
 
-var start = UTCNow().AddDate(0, 0, -1)
-var replicationConfigTests2 = []struct {
-	info         ObjectInfo
-	name         string
-	rcfg         replicationConfig
-	dsc          ReplicateDecision
-	tgtStatuses  map[string]replication.StatusType
-	expectedSync bool
-}{
-	{ // Cases 1-4: existing object replication enabled, versioning enabled, no reset - replication status varies
-		// 1: Pending replication
-		name: "existing object replication on object in Pending replication status",
-		info: ObjectInfo{Size: 100,
-			ReplicationStatusInternal: "arn1:PENDING;",
-			ReplicationStatus:         replication.Pending,
-			VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
-		},
-		rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
-			Arn: "arn1",
-		}}}},
-		dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
-		expectedSync: true,
-	},
-
-	{ // 2. replication status Failed
-		name: "existing object replication on object in Failed replication status",
-		info: ObjectInfo{Size: 100,
-			ReplicationStatusInternal: "arn1:FAILED",
-			ReplicationStatus:         replication.Failed,
-			VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
-		},
-		dsc: ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
-		rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
-			Arn: "arn1",
-		}}}},
-		expectedSync: true,
-	},
-	{ // 3. replication status unset
-		name: "existing object replication on pre-existing unreplicated object",
-		info: ObjectInfo{Size: 100,
-			ReplicationStatus: replication.StatusType(""),
-			VersionID:         "a3348c34-c352-4498-82f0-1098e8b34df9",
-		},
-		rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
-			Arn: "arn1",
-		}}}},
-		dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
-		expectedSync: true,
-	},
-	{ // 4. replication status Complete
-		name: "existing object replication on object in Completed replication status",
-		info: ObjectInfo{Size: 100,
-			ReplicationStatusInternal: "arn1:COMPLETED",
-			ReplicationStatus:         replication.Completed,
-			VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
-		},
-		dsc: ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", false, false)}},
-		rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
-			Arn: "arn1",
-		}}}},
-		expectedSync: false,
-	},
-	{ // 5. existing object replication enabled, versioning enabled, replication status Pending & reset ID present
-		name: "existing object replication with reset in progress and object in Pending status",
-		info: ObjectInfo{Size: 100,
-			ReplicationStatusInternal: "arn1:PENDING;",
-			ReplicationStatus:         replication.Pending,
-			VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
-			UserDefined:               map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;abc", UTCNow().AddDate(0, -1, 0).String())},
-		},
-		expectedSync: true,
-		dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
-		rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
-			Arn:             "arn1",
-			ResetID:         "xyz",
-			ResetBeforeDate: UTCNow(),
-		}}},
-		},
-	},
-	{ // 6. existing object replication enabled, versioning enabled, replication status Failed & reset ID present
-		name: "existing object replication with reset in progress and object in Failed status",
-		info: ObjectInfo{Size: 100,
-			ReplicationStatusInternal: "arn1:FAILED;",
-			ReplicationStatus:         replication.Failed,
-			VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
-			UserDefined:               map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;abc", UTCNow().AddDate(0, -1, 0).String())},
-		},
-		dsc: ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
-		rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
-			Arn:             "arn1",
-			ResetID:         "xyz",
-			ResetBeforeDate: UTCNow(),
-		}}},
-		},
-		expectedSync: true,
-	},
-	{ // 7. existing object replication enabled, versioning enabled, replication status unset & reset ID present
-		name: "existing object replication with reset in progress and object never replicated before",
-		info: ObjectInfo{Size: 100,
-			ReplicationStatus: replication.StatusType(""),
-			VersionID:         "a3348c34-c352-4498-82f0-1098e8b34df9",
-			UserDefined:       map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;abc", UTCNow().AddDate(0, -1, 0).String())},
-		},
-		dsc: ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
-		rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
-			Arn:             "arn1",
-			ResetID:         "xyz",
-			ResetBeforeDate: UTCNow(),
-		}}},
+var (
+	start                   = UTCNow().AddDate(0, 0, -1)
+	replicationConfigTests2 = []struct {
+		info         ObjectInfo
+		name         string
+		rcfg         replicationConfig
+		dsc          ReplicateDecision
+		tgtStatuses  map[string]replication.StatusType
+		expectedSync bool
+	}{
+		{ // Cases 1-4: existing object replication enabled, versioning enabled, no reset - replication status varies
+			// 1: Pending replication
+			name: "existing object replication on object in Pending replication status",
+			info: ObjectInfo{
+				Size:                      100,
+				ReplicationStatusInternal: "arn1:PENDING;",
+				ReplicationStatus:         replication.Pending,
+				VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
+			},
+			rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
+				Arn: "arn1",
+			}}}},
+			dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
+			expectedSync: true,
 		},
 
-		expectedSync: true,
-	},
+		{ // 2. replication status Failed
+			name: "existing object replication on object in Failed replication status",
+			info: ObjectInfo{
+				Size:                      100,
+				ReplicationStatusInternal: "arn1:FAILED",
+				ReplicationStatus:         replication.Failed,
+				VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
+			},
+			dsc: ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
+			rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
+				Arn: "arn1",
+			}}}},
+			expectedSync: true,
+		},
+		{ // 3. replication status unset
+			name: "existing object replication on pre-existing unreplicated object",
+			info: ObjectInfo{
+				Size:              100,
+				ReplicationStatus: replication.StatusType(""),
+				VersionID:         "a3348c34-c352-4498-82f0-1098e8b34df9",
+			},
+			rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
+				Arn: "arn1",
+			}}}},
+			dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
+			expectedSync: true,
+		},
+		{ // 4. replication status Complete
+			name: "existing object replication on object in Completed replication status",
+			info: ObjectInfo{
+				Size:                      100,
+				ReplicationStatusInternal: "arn1:COMPLETED",
+				ReplicationStatus:         replication.Completed,
+				VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
+			},
+			dsc: ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", false, false)}},
+			rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
+				Arn: "arn1",
+			}}}},
+			expectedSync: false,
+		},
+		{ // 5. existing object replication enabled, versioning enabled, replication status Pending & reset ID present
+			name: "existing object replication with reset in progress and object in Pending status",
+			info: ObjectInfo{
+				Size:                      100,
+				ReplicationStatusInternal: "arn1:PENDING;",
+				ReplicationStatus:         replication.Pending,
+				VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
+				UserDefined:               map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;abc", UTCNow().AddDate(0, -1, 0).String())},
+			},
+			expectedSync: true,
+			dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
+			rcfg: replicationConfig{
+				remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
+					Arn:             "arn1",
+					ResetID:         "xyz",
+					ResetBeforeDate: UTCNow(),
+				}}},
+			},
+		},
+		{ // 6. existing object replication enabled, versioning enabled, replication status Failed & reset ID present
+			name: "existing object replication with reset in progress and object in Failed status",
+			info: ObjectInfo{
+				Size:                      100,
+				ReplicationStatusInternal: "arn1:FAILED;",
+				ReplicationStatus:         replication.Failed,
+				VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
+				UserDefined:               map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;abc", UTCNow().AddDate(0, -1, 0).String())},
+			},
+			dsc: ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
+			rcfg: replicationConfig{
+				remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
+					Arn:             "arn1",
+					ResetID:         "xyz",
+					ResetBeforeDate: UTCNow(),
+				}}},
+			},
+			expectedSync: true,
+		},
+		{ // 7. existing object replication enabled, versioning enabled, replication status unset & reset ID present
+			name: "existing object replication with reset in progress and object never replicated before",
+			info: ObjectInfo{
+				Size:              100,
+				ReplicationStatus: replication.StatusType(""),
+				VersionID:         "a3348c34-c352-4498-82f0-1098e8b34df9",
+				UserDefined:       map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;abc", UTCNow().AddDate(0, -1, 0).String())},
+			},
+			dsc: ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
+			rcfg: replicationConfig{
+				remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
+					Arn:             "arn1",
+					ResetID:         "xyz",
+					ResetBeforeDate: UTCNow(),
+				}}},
+			},
 
-	{ // 8. existing object replication enabled, versioning enabled, replication status Complete & reset ID present
-		name: "existing object replication enabled - reset in progress for an object in Completed status",
-		info: ObjectInfo{Size: 100,
-			ReplicationStatusInternal: "arn1:COMPLETED;",
-			ReplicationStatus:         replication.Completed,
-			VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df8",
-			UserDefined:               map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;abc", UTCNow().AddDate(0, -1, 0).String())},
+			expectedSync: true,
 		},
-		expectedSync: true,
-		dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
-		rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
-			Arn:             "arn1",
-			ResetID:         "xyz",
-			ResetBeforeDate: UTCNow(),
-		}}},
-		},
-	},
-	{ // 9. existing object replication enabled, versioning enabled, replication status Pending & reset ID different
-		name: "existing object replication enabled, newer reset in progress on object in Pending replication status",
-		info: ObjectInfo{Size: 100,
-			ReplicationStatusInternal: "arn1:PENDING;",
 
-			ReplicationStatus: replication.Pending,
-			VersionID:         "a3348c34-c352-4498-82f0-1098e8b34df9",
-			UserDefined:       map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;%s", UTCNow().AddDate(0, 0, -1).Format(http.TimeFormat), "abc")},
-			ModTime:           UTCNow().AddDate(0, 0, -2),
+		{ // 8. existing object replication enabled, versioning enabled, replication status Complete & reset ID present
+			name: "existing object replication enabled - reset in progress for an object in Completed status",
+			info: ObjectInfo{
+				Size:                      100,
+				ReplicationStatusInternal: "arn1:COMPLETED;",
+				ReplicationStatus:         replication.Completed,
+				VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df8",
+				UserDefined:               map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;abc", UTCNow().AddDate(0, -1, 0).String())},
+			},
+			expectedSync: true,
+			dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
+			rcfg: replicationConfig{
+				remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
+					Arn:             "arn1",
+					ResetID:         "xyz",
+					ResetBeforeDate: UTCNow(),
+				}}},
+			},
 		},
-		expectedSync: true,
-		dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
-		rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
-			Arn:             "arn1",
-			ResetID:         "xyz",
-			ResetBeforeDate: UTCNow(),
-		}}},
+		{ // 9. existing object replication enabled, versioning enabled, replication status Pending & reset ID different
+			name: "existing object replication enabled, newer reset in progress on object in Pending replication status",
+			info: ObjectInfo{
+				Size:                      100,
+				ReplicationStatusInternal: "arn1:PENDING;",
+
+				ReplicationStatus: replication.Pending,
+				VersionID:         "a3348c34-c352-4498-82f0-1098e8b34df9",
+				UserDefined:       map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;%s", UTCNow().AddDate(0, 0, -1).Format(http.TimeFormat), "abc")},
+				ModTime:           UTCNow().AddDate(0, 0, -2),
+			},
+			expectedSync: true,
+			dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
+			rcfg: replicationConfig{
+				remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
+					Arn:             "arn1",
+					ResetID:         "xyz",
+					ResetBeforeDate: UTCNow(),
+				}}},
+			},
 		},
-	},
-	{ // 10. existing object replication enabled, versioning enabled, replication status Complete & reset done
-		name: "reset done on object in Completed Status - ineligbile for re-replication",
-		info: ObjectInfo{Size: 100,
-			ReplicationStatusInternal: "arn1:COMPLETED;",
-			ReplicationStatus:         replication.Completed,
-			VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
-			UserDefined:               map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;%s", start.Format(http.TimeFormat), "xyz")},
+		{ // 10. existing object replication enabled, versioning enabled, replication status Complete & reset done
+			name: "reset done on object in Completed Status - ineligbile for re-replication",
+			info: ObjectInfo{
+				Size:                      100,
+				ReplicationStatusInternal: "arn1:COMPLETED;",
+				ReplicationStatus:         replication.Completed,
+				VersionID:                 "a3348c34-c352-4498-82f0-1098e8b34df9",
+				UserDefined:               map[string]string{xhttp.MinIOReplicationResetStatus: fmt.Sprintf("%s;%s", start.Format(http.TimeFormat), "xyz")},
+			},
+			expectedSync: false,
+			dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
+			rcfg: replicationConfig{
+				remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
+					Arn:             "arn1",
+					ResetID:         "xyz",
+					ResetBeforeDate: start,
+				}}},
+			},
 		},
-		expectedSync: false,
-		dsc:          ReplicateDecision{targetsMap: map[string]replicateTargetDecision{"arn1": newReplicateTargetDecision("arn1", true, false)}},
-		rcfg: replicationConfig{remotes: &madmin.BucketTargets{Targets: []madmin.BucketTarget{{
-			Arn:             "arn1",
-			ResetID:         "xyz",
-			ResetBeforeDate: start,
-		}}},
-		},
-	},
-}
+	}
+)
 
 func TestReplicationResyncwrapper(t *testing.T) {
 	for i, test := range replicationConfigTests2 {

cmd/bucket-targets.go

@@ -414,7 +414,7 @@ func parseBucketTargetConfig(bucket string, cdata, cmetadata []byte) (*madmin.Bu
 		return nil, nil
 	}
 	data = cdata
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if len(cmetadata) != 0 {
 		if err := json.Unmarshal(cmetadata, &meta); err != nil {
 			return nil, err

cmd/bucket-versioning-handler.go

@@ -144,5 +144,4 @@ func (api objectAPIHandlers) GetBucketVersioningHandler(w http.ResponseWriter, r
 
 	// Write bucket versioning configuration to client
 	writeSuccessResponseXML(w, configData)
-
 }

cmd/common-main.go

@@ -68,8 +68,11 @@ import (
 
 // serverDebugLog will enable debug printing
 var serverDebugLog = env.Get("_MINIO_SERVER_DEBUG", config.EnableOff) == config.EnableOn
-var shardDiskTimeDelta time.Duration
-var defaultAWSCredProvider []credentials.Provider
+
+var (
+	shardDiskTimeDelta     time.Duration
+	defaultAWSCredProvider []credentials.Provider
+)
 
 func init() {
 	if runtime.GOOS == "windows" {
@@ -362,7 +365,6 @@ func newConfigDirFromCtx(ctx *cli.Context, option string, getDefaultDir func() s
 }
 
 func handleCommonCmdArgs(ctx *cli.Context) {
-
 	// Get "json" flag from command line argument and
 	// enable json and quite modes if json flag is turned on.
 	globalCLIContext.JSON = ctx.IsSet("json") || ctx.GlobalIsSet("json")
@@ -669,7 +671,7 @@ func handleCommonEnvVars() {
 	publicIPs := env.Get(config.EnvPublicIPs, "")
 	if len(publicIPs) != 0 {
 		minioEndpoints := strings.Split(publicIPs, config.ValueSeparator)
-		var domainIPs = set.NewStringSet()
+		domainIPs := set.NewStringSet()
 		for _, endpoint := range minioEndpoints {
 			if net.ParseIP(endpoint) == nil {
 				// Checking if the IP is a DNS entry.
@@ -786,7 +788,7 @@ func handleCommonEnvVars() {
 			logger.Fatal(err, fmt.Sprintf("Unable to load X.509 root CAs for KES from %q", env.Get(config.EnvKESServerCA, globalCertsCADir.Get())))
 		}
 
-		var defaultKeyID = env.Get(config.EnvKESKeyName, "")
+		defaultKeyID := env.Get(config.EnvKESKeyName, "")
 		KMS, err := kms.NewWithConfig(kms.Config{
 			Endpoints:    endpoints,
 			DefaultKeyID: defaultKeyID,

cmd/common-main_test.go

@@ -73,7 +73,8 @@ func Test_minioEnvironFromFile(t *testing.T) {
 		expectedErr  bool
 		expectedEkvs []envKV
 	}{
-		{`
+		{
+			`
 export MINIO_ROOT_USER=minio
 export MINIO_ROOT_PASSWORD=minio123`,
 			false,
@@ -89,7 +90,8 @@ export MINIO_ROOT_PASSWORD=minio123`,
 			},
 		},
 		// Value with double quotes
-		{`export MINIO_ROOT_USER="minio"`,
+		{
+			`export MINIO_ROOT_USER="minio"`,
 			false,
 			[]envKV{
 				{
@@ -99,7 +101,8 @@ export MINIO_ROOT_PASSWORD=minio123`,
 			},
 		},
 		// Value with single quotes
-		{`export MINIO_ROOT_USER='minio'`,
+		{
+			`export MINIO_ROOT_USER='minio'`,
 			false,
 			[]envKV{
 				{
@@ -108,7 +111,8 @@ export MINIO_ROOT_PASSWORD=minio123`,
 				},
 			},
 		},
-		{`
+		{
+			`
 MINIO_ROOT_USER=minio
 MINIO_ROOT_PASSWORD=minio123`,
 			false,
@@ -123,7 +127,8 @@ MINIO_ROOT_PASSWORD=minio123`,
 				},
 			},
 		},
-		{`
+		{
+			`
 export MINIO_ROOT_USERminio
 export MINIO_ROOT_PASSWORD=minio123`,
 			true,

cmd/config-current.go

@@ -50,7 +50,7 @@ import (
 )
 
 func initHelp() {
-	var kvs = map[string]config.KVS{
+	kvs := map[string]config.KVS{
 		config.EtcdSubSys:           etcd.DefaultKVS,
 		config.CacheSubSys:          cache.DefaultKVS,
 		config.CompressionSubSys:    compress.DefaultKVS,
@@ -78,7 +78,7 @@ func initHelp() {
 	config.RegisterDefaultKVS(kvs)
 
 	// Captures help for each sub-system
-	var helpSubSys = config.HelpKVS{
+	helpSubSys := config.HelpKVS{
 		config.HelpKV{
 			Key:         config.SiteSubSys,
 			Description: "label the server and its location",
@@ -205,7 +205,7 @@ func initHelp() {
 		}
 	}
 
-	var helpMap = map[string]config.HelpKVS{
+	helpMap := map[string]config.HelpKVS{
 		"":                          helpSubSys, // Help for all sub-systems.
 		config.SiteSubSys:           config.SiteHelp,
 		config.RegionSubSys:         config.RegionHelp,

cmd/config-dir.go

@@ -84,7 +84,7 @@ func (dir *ConfigDir) Get() string {
 
 // Attempts to create all directories, ignores any permission denied errors.
 func mkdirAllIgnorePerm(path string) error {
-	err := os.MkdirAll(path, 0700)
+	err := os.MkdirAll(path, 0o700)
 	if err != nil {
 		// It is possible in kubernetes like deployments this directory
 		// is already mounted and is not writable, ignore any write errors.

cmd/config-migrate.go

@@ -2445,12 +2445,12 @@ func migrateConfigToMinioSys(objAPI ObjectLayer) (err error) {
 		return err
 	} // if errConfigNotFound proceed to migrate..
 
-	var configFiles = []string{
+	configFiles := []string{
 		getConfigFile(),
 		getConfigFile() + ".deprecated",
 		configFile,
 	}
-	var config = &serverConfigV27{}
+	config := &serverConfigV27{}
 	for _, cfgFile := range configFiles {
 		if _, err = Load(cfgFile, config); err != nil {
 			if !osIsNotExist(err) && !osIsPermission(err) {

cmd/config-migrate_test.go

@@ -51,7 +51,7 @@ func TestServerConfigMigrateV1(t *testing.T) {
 	// Create a V1 config json file and store it
 	configJSON := "{ \"version\":\"1\", \"accessKeyId\":\"abcde\", \"secretAccessKey\":\"abcdefgh\"}"
 	configPath := rootPath + "/fsUsers.json"
-	if err := ioutil.WriteFile(configPath, []byte(configJSON), 0644); err != nil {
+	if err := ioutil.WriteFile(configPath, []byte(configJSON), 0o644); err != nil {
 		t.Fatal("Unexpected error: ", err)
 	}
 
@@ -181,7 +181,7 @@ func TestServerConfigMigrateV2toV33(t *testing.T) {
 	configPath := rootPath + SlashSeparator + minioConfigFile
 
 	// Create a corrupted config file
-	if err := ioutil.WriteFile(configPath, []byte("{ \"version\":\"2\","), 0644); err != nil {
+	if err := ioutil.WriteFile(configPath, []byte("{ \"version\":\"2\","), 0o644); err != nil {
 		t.Fatal("Unexpected error: ", err)
 	}
 	// Fire a migrateConfig()
@@ -194,7 +194,7 @@ func TestServerConfigMigrateV2toV33(t *testing.T) {
 
 	// Create a V2 config json file and store it
 	configJSON := "{ \"version\":\"2\", \"credentials\": {\"accessKeyId\":\"" + accessKey + "\", \"secretAccessKey\":\"" + secretKey + "\", \"region\":\"us-east-1\"}, \"mongoLogger\":{\"addr\":\"127.0.0.1:3543\", \"db\":\"foodb\", \"collection\":\"foo\"}, \"syslogLogger\":{\"network\":\"127.0.0.1:543\", \"addr\":\"addr\"}, \"fileLogger\":{\"filename\":\"log.out\"}}"
-	if err := ioutil.WriteFile(configPath, []byte(configJSON), 0644); err != nil {
+	if err := ioutil.WriteFile(configPath, []byte(configJSON), 0o644); err != nil {
 		t.Fatal("Unexpected error: ", err)
 	}
 
@@ -244,7 +244,7 @@ func TestServerConfigMigrateFaultyConfig(t *testing.T) {
 	configPath := rootPath + SlashSeparator + minioConfigFile
 
 	// Create a corrupted config file
-	if err := ioutil.WriteFile(configPath, []byte("{ \"version\":\"2\", \"test\":"), 0644); err != nil {
+	if err := ioutil.WriteFile(configPath, []byte("{ \"version\":\"2\", \"test\":"), 0o644); err != nil {
 		t.Fatal("Unexpected error: ", err)
 	}
 
@@ -343,7 +343,7 @@ func TestServerConfigMigrateCorruptedConfig(t *testing.T) {
 	for i := 3; i <= 17; i++ {
 		// Create a corrupted config file
 		if err = ioutil.WriteFile(configPath, []byte(fmt.Sprintf("{ \"version\":\"%d\", \"credential\": { \"accessKey\": 1 } }", i)),
-			0644); err != nil {
+			0o644); err != nil {
 			t.Fatal("Unexpected error: ", err)
 		}
 
@@ -354,7 +354,7 @@ func TestServerConfigMigrateCorruptedConfig(t *testing.T) {
 	}
 
 	// Create a corrupted config file for version '2'.
-	if err = ioutil.WriteFile(configPath, []byte("{ \"version\":\"2\", \"credentials\": { \"accessKeyId\": 1 } }"), 0644); err != nil {
+	if err = ioutil.WriteFile(configPath, []byte("{ \"version\":\"2\", \"credentials\": { \"accessKeyId\": 1 } }"), 0o644); err != nil {
 		t.Fatal("Unexpected error: ", err)
 	}
 

cmd/config.go

@@ -46,8 +46,8 @@ const (
 )
 
 func listServerConfigHistory(ctx context.Context, objAPI ObjectLayer, withData bool, count int) (
-	[]madmin.ConfigHistoryEntry, error) {
-
+	[]madmin.ConfigHistoryEntry, error,
+) {
 	var configHistory []madmin.ConfigHistoryEntry
 
 	// List all kvs
@@ -140,7 +140,7 @@ func saveServerConfig(ctx context.Context, objAPI ObjectLayer, cfg interface{})
 		return err
 	}
 
-	var configFile = path.Join(minioConfigPrefix, minioConfigFile)
+	configFile := path.Join(minioConfigPrefix, minioConfigFile)
 	if GlobalKMS != nil {
 		data, err = config.EncryptBytes(GlobalKMS, data, kms.Context{
 			minioMetaBucket: path.Join(minioMetaBucket, configFile),
@@ -153,7 +153,7 @@ func saveServerConfig(ctx context.Context, objAPI ObjectLayer, cfg interface{})
 }
 
 func readServerConfig(ctx context.Context, objAPI ObjectLayer) (config.Config, error) {
-	var srvCfg = config.New()
+	srvCfg := config.New()
 	configFile := path.Join(minioConfigPrefix, minioConfigFile)
 	data, err := readConfig(ctx, objAPI, configFile)
 	if err != nil {
@@ -174,7 +174,7 @@ func readServerConfig(ctx context.Context, objAPI ObjectLayer) (config.Config, e
 		}
 	}
 
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err = json.Unmarshal(data, &srvCfg); err != nil {
 		return nil, err
 	}

cmd/data-scanner.go

@@ -277,7 +277,6 @@ func scanDataFolder(ctx context.Context, basePath string, cache dataUsageCache,
 		defer func() {
 			console.Debugf(logPrefix+" Scanner time: %v %s\n", time.Since(t), logSuffix)
 		}()
-
 	}
 
 	switch cache.Info.Name {
@@ -875,8 +874,10 @@ func (i *scannerItem) transformMetaDir() {
 	i.objectName = split[len(split)-1]
 }
 
-var applyActionsLogPrefix = color.Green("applyActions:")
-var applyVersionActionsLogPrefix = color.Green("applyVersionActions:")
+var (
+	applyActionsLogPrefix        = color.Green("applyActions:")
+	applyVersionActionsLogPrefix = color.Green("applyVersionActions:")
+)
 
 func (i *scannerItem) applyHealing(ctx context.Context, o ObjectLayer, oi ObjectInfo) (size int64) {
 	if i.debug {
@@ -979,7 +980,6 @@ func (i *scannerItem) applyTierObjSweep(ctx context.Context, o ObjectLayer, oi O
 	if ignoreNotFoundErr(err) != nil {
 		logger.LogIf(ctx, err)
 	}
-
 }
 
 // applyNewerNoncurrentVersionLimit removes noncurrent versions older than the most recent NewerNoncurrentVersions configured.
@@ -1100,7 +1100,6 @@ func applyTransitionRule(obj ObjectInfo) bool {
 	}
 	globalTransitionState.queueTransitionTask(obj)
 	return true
-
 }
 
 func applyExpiryOnTransitionedObject(ctx context.Context, objLayer ObjectLayer, obj ObjectInfo, restoredObject bool) bool {

cmd/data-update-tracker_test.go

@@ -105,7 +105,7 @@ func TestDataUpdateTracker(t *testing.T) {
 	defer cancel()
 	dut.start(ctx, tmpDir)
 
-	var tests = []struct {
+	tests := []struct {
 		in    string
 		check []string // if not empty, check against these instead.
 		exist bool

cmd/data-usage-cache.go

@@ -624,7 +624,7 @@ func (d *dataUsageCache) reduceChildrenOf(path dataUsageHash, limit int, compact
 	// Appears to be printed with _MINIO_SERVER_DEBUG=off
 	// console.Debugf(" %d children found, compacting %v\n", total, path)
 
-	var leaves = make([]struct {
+	leaves := make([]struct {
 		objects uint64
 		path    dataUsageHash
 	}, total)
@@ -774,7 +774,7 @@ func (d *dataUsageCache) tiersUsageInfo(buckets []BucketInfo) *allTierStats {
 // bucketsUsageInfo returns the buckets usage info as a map, with
 // key as bucket name
 func (d *dataUsageCache) bucketsUsageInfo(buckets []BucketInfo) map[string]BucketUsageInfo {
-	var dst = make(map[string]BucketUsageInfo, len(buckets))
+	dst := make(map[string]BucketUsageInfo, len(buckets))
 	for _, bucket := range buckets {
 		e := d.find(bucket.Name)
 		if e == nil {
@@ -797,7 +797,6 @@ func (d *dataUsageCache) bucketsUsageInfo(buckets []BucketInfo) map[string]Bucke
 					ReplicationPendingCount: stat.PendingCount,
 					ReplicationFailedCount:  stat.FailedCount,
 				}
-
 			}
 		}
 		dst[bucket.Name] = bui

cmd/data-usage.go

@@ -40,7 +40,7 @@ const (
 // storeDataUsageInBackend will store all objects sent on the gui channel until closed.
 func storeDataUsageInBackend(ctx context.Context, objAPI ObjectLayer, dui <-chan DataUsageInfo) {
 	for dataUsageInfo := range dui {
-		var json = jsoniter.ConfigCompatibleWithStandardLibrary
+		json := jsoniter.ConfigCompatibleWithStandardLibrary
 		dataUsageJSON, err := json.Marshal(dataUsageInfo)
 		if err != nil {
 			logger.LogIf(ctx, err)
@@ -105,7 +105,7 @@ func loadDataUsageFromBackend(ctx context.Context, objAPI ObjectLayer) (DataUsag
 	defer r.Close()
 
 	var dataUsageInfo DataUsageInfo
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err = json.NewDecoder(r).Decode(&dataUsageInfo); err != nil {
 		return DataUsageInfo{}, err
 	}

cmd/data-usage_test.go

@@ -41,7 +41,7 @@ func TestDataUsageUpdate(t *testing.T) {
 	}
 	const bucket = "bucket"
 	defer os.RemoveAll(base)
-	var files = []usageTestFile{
+	files := []usageTestFile{
 		{name: "rootfile", size: 10000},
 		{name: "rootfile2", size: 10000},
 		{name: "dir1/d1file", size: 2000},
@@ -73,7 +73,7 @@ func TestDataUsageUpdate(t *testing.T) {
 	}
 
 	// Test dirs
-	var want = []struct {
+	want := []struct {
 		path       string
 		isNil      bool
 		size, objs int
@@ -257,7 +257,7 @@ func TestDataUsageUpdatePrefix(t *testing.T) {
 	}
 	scannerSleeper.Update(0, 0)
 	defer os.RemoveAll(base)
-	var files = []usageTestFile{
+	files := []usageTestFile{
 		{name: "bucket/rootfile", size: 10000},
 		{name: "bucket/rootfile2", size: 10000},
 		{name: "bucket/dir1/d1file", size: 2000},
@@ -302,7 +302,7 @@ func TestDataUsageUpdatePrefix(t *testing.T) {
 	}
 
 	// Test dirs
-	var want = []struct {
+	want := []struct {
 		path       string
 		isNil      bool
 		size, objs int
@@ -543,7 +543,7 @@ func TestDataUsageCacheSerialize(t *testing.T) {
 	}
 	const bucket = "abucket"
 	defer os.RemoveAll(base)
-	var files = []usageTestFile{
+	files := []usageTestFile{
 		{name: "rootfile", size: 10000},
 		{name: "rootfile2", size: 10000},
 		{name: "dir1/d1file", size: 2000},

cmd/disk-cache-backend.go

@@ -190,7 +190,7 @@ func newDiskCache(ctx context.Context, dir string, config cache.Config) (*diskCa
 		quotaPct = config.Quota
 	}
 
-	if err := os.MkdirAll(dir, 0777); err != nil {
+	if err := os.MkdirAll(dir, 0o777); err != nil {
 		return nil, fmt.Errorf("Unable to initialize '%s' dir, %w", dir, err)
 	}
 	cache := diskCache{
@@ -619,10 +619,10 @@ func (c *diskCache) saveMetadata(ctx context.Context, bucket, object string, met
 	cachedPath := getCacheSHADir(c.dir, bucket, object)
 	metaPath := pathJoin(cachedPath, cacheMetaJSONFile)
 	// Create cache directory if needed
-	if err := os.MkdirAll(cachedPath, 0777); err != nil {
+	if err := os.MkdirAll(cachedPath, 0o777); err != nil {
 		return err
 	}
-	f, err := os.OpenFile(metaPath, os.O_RDWR|os.O_CREATE, 0666)
+	f, err := os.OpenFile(metaPath, os.O_RDWR|os.O_CREATE, 0o666)
 	if err != nil {
 		return err
 	}
@@ -682,10 +682,10 @@ func (c *diskCache) updateMetadata(ctx context.Context, bucket, object, etag str
 	cachedPath := getCacheSHADir(c.dir, bucket, object)
 	metaPath := pathJoin(cachedPath, cacheMetaJSONFile)
 	// Create cache directory if needed
-	if err := os.MkdirAll(cachedPath, 0777); err != nil {
+	if err := os.MkdirAll(cachedPath, 0o777); err != nil {
 		return err
 	}
-	f, err := os.OpenFile(metaPath, os.O_RDWR, 0666)
+	f, err := os.OpenFile(metaPath, os.O_RDWR, 0o666)
 	if err != nil {
 		return err
 	}
@@ -732,7 +732,7 @@ func getCacheWriteBackSHADir(dir, bucket, object string) string {
 
 // Cache data to disk with bitrot checksum added for each block of 1MB
 func (c *diskCache) bitrotWriteToCache(cachePath, fileName string, reader io.Reader, size uint64) (int64, string, error) {
-	if err := os.MkdirAll(cachePath, 0777); err != nil {
+	if err := os.MkdirAll(cachePath, 0o777); err != nil {
 		return 0, "", err
 	}
 	filePath := pathJoin(cachePath, fileName)
@@ -807,6 +807,7 @@ func newCacheEncryptReader(content io.Reader, bucket, object string, metadata ma
 	}
 	return reader, nil
 }
+
 func newCacheEncryptMetadata(bucket, object string, metadata map[string]string) ([]byte, error) {
 	var sealedKey crypto.SealedKey
 	if globalCacheKMS == nil {
@@ -827,6 +828,7 @@ func newCacheEncryptMetadata(bucket, object string, metadata map[string]string)
 	metadata[SSECacheEncrypted] = ""
 	return objectKey[:], nil
 }
+
 func (c *diskCache) GetLockContext(ctx context.Context, bucket, object string) (RWLocker, LockContext, error) {
 	cachePath := getCacheSHADir(c.dir, bucket, object)
 	cLock := c.NewNSLockFn(cachePath)
@@ -879,12 +881,12 @@ func (c *diskCache) put(ctx context.Context, bucket, object string, data io.Read
 		cachePath = getCacheWriteBackSHADir(c.dir, bucket, object)
 	}
 
-	if err := os.MkdirAll(cachePath, 0777); err != nil {
+	if err := os.MkdirAll(cachePath, 0o777); err != nil {
 		return oi, err
 	}
-	var metadata = cloneMSS(opts.UserDefined)
-	var reader = data
-	var actualSize = uint64(size)
+	metadata := cloneMSS(opts.UserDefined)
+	reader := data
+	actualSize := uint64(size)
 	if globalCacheKMS != nil {
 		reader, err = newCacheEncryptReader(data, bucket, object, metadata)
 		if err != nil {
@@ -933,14 +935,14 @@ func (c *diskCache) putRange(ctx context.Context, bucket, object string, data io
 		return errDiskFull
 	}
 	cachePath := getCacheSHADir(c.dir, bucket, object)
-	if err := os.MkdirAll(cachePath, 0777); err != nil {
+	if err := os.MkdirAll(cachePath, 0o777); err != nil {
 		return err
 	}
-	var metadata = cloneMSS(opts.UserDefined)
-	var reader = data
-	var actualSize = uint64(rlen)
+	metadata := cloneMSS(opts.UserDefined)
+	reader := data
+	actualSize := uint64(rlen)
 	// objSize is the actual size of object (with encryption overhead if any)
-	var objSize = uint64(size)
+	objSize := uint64(size)
 	if globalCacheKMS != nil {
 		reader, err = newCacheEncryptReader(data, bucket, object, metadata)
 		if err != nil {
@@ -1269,12 +1271,12 @@ func (c *diskCache) NewMultipartUpload(ctx context.Context, bucket, object, uID
 
 	cachePath := getMultipartCacheSHADir(c.dir, bucket, object)
 	uploadIDDir := path.Join(cachePath, uploadID)
-	if err := os.MkdirAll(uploadIDDir, 0777); err != nil {
+	if err := os.MkdirAll(uploadIDDir, 0o777); err != nil {
 		return uploadID, err
 	}
 	metaPath := pathJoin(uploadIDDir, cacheMetaJSONFile)
 
-	f, err := os.OpenFile(metaPath, os.O_RDWR|os.O_CREATE, 0666)
+	f, err := os.OpenFile(metaPath, os.O_RDWR|os.O_CREATE, 0o666)
 	if err != nil {
 		return uploadID, err
 	}
@@ -1331,7 +1333,7 @@ func (c *diskCache) PutObjectPart(ctx context.Context, bucket, object, uploadID
 		return oi, errDiskFull
 	}
 	reader := data
-	var actualSize = uint64(size)
+	actualSize := uint64(size)
 	if globalCacheKMS != nil {
 		reader, err = newCachePartEncryptReader(ctx, bucket, object, partID, data, size, meta.Meta)
 		if err != nil {
@@ -1380,7 +1382,7 @@ func (c *diskCache) SavePartMetadata(ctx context.Context, bucket, object, upload
 	defer uploadLock.Unlock(ulkctx.Cancel)
 
 	metaPath := pathJoin(uploadDir, cacheMetaJSONFile)
-	f, err := os.OpenFile(metaPath, os.O_RDWR, 0666)
+	f, err := os.OpenFile(metaPath, os.O_RDWR, 0o666)
 	if err != nil {
 		return err
 	}
@@ -1558,7 +1560,7 @@ func (c *diskCache) CompleteMultipartUpload(ctx context.Context, bucket, object,
 	uploadMeta.Hits++
 	metaPath := pathJoin(uploadIDDir, cacheMetaJSONFile)
 
-	f, err := os.OpenFile(metaPath, os.O_RDWR|os.O_CREATE, 0666)
+	f, err := os.OpenFile(metaPath, os.O_RDWR|os.O_CREATE, 0o666)
 	if err != nil {
 		return oi, err
 	}

cmd/disk-cache-utils.go

@@ -113,7 +113,6 @@ func cacheControlOpts(o ObjectInfo) *cacheControl {
 		if strings.EqualFold(k, "cache-control") {
 			headerVal = v
 		}
-
 	}
 	if headerVal == "" {
 		return nil
@@ -581,6 +580,7 @@ func (t *multiWriter) Write(p []byte) (n int, err error) {
 	}
 	return len(p), nil
 }
+
 func cacheMultiWriter(w1 io.Writer, w2 *io.PipeWriter) io.Writer {
 	return &multiWriter{backendWriter: w1, cacheWriter: w2}
 }

cmd/disk-cache-utils_test.go

@@ -38,7 +38,7 @@ func TestGetCacheControlOpts(t *testing.T) {
 		{"max-age=2592000, no-store", timeSentinel, &cacheControl{maxAge: 2592000, sMaxAge: 0, noStore: true, minFresh: 0, expiry: time.Time{}}, false},
 		{"must-revalidate, max-age=600", timeSentinel, &cacheControl{maxAge: 600, sMaxAge: 0, minFresh: 0, expiry: time.Time{}}, false},
 		{"s-maxAge=2500, max-age=600", timeSentinel, &cacheControl{maxAge: 600, sMaxAge: 2500, minFresh: 0, expiry: time.Time{}}, false},
-		{"s-maxAge=2500, max-age=600", expiry, &cacheControl{maxAge: 600, sMaxAge: 2500, minFresh: 0, expiry: time.Date(2015, time.October, 21, 07, 28, 00, 00, time.UTC)}, false},
+		{"s-maxAge=2500, max-age=600", expiry, &cacheControl{maxAge: 600, sMaxAge: 2500, minFresh: 0, expiry: time.Date(2015, time.October, 21, 0o7, 28, 0o0, 0o0, time.UTC)}, false},
 		{"s-maxAge=2500, max-age=600s", timeSentinel, &cacheControl{maxAge: 600, sMaxAge: 2500, minFresh: 0, expiry: time.Time{}}, true},
 	}
 
@@ -61,7 +61,6 @@ func TestGetCacheControlOpts(t *testing.T) {
 }
 
 func TestIsMetadataSame(t *testing.T) {
-
 	testCases := []struct {
 		m1       map[string]string
 		m2       map[string]string
@@ -148,6 +147,7 @@ func TestNewFileScorer(t *testing.T) {
 		t.Fatal("unexpected file list", fs.queueString())
 	}
 }
+
 func TestBytesToClear(t *testing.T) {
 	testCases := []struct {
 		total         int64

cmd/disk-cache.go

@@ -137,7 +137,6 @@ func (c *cacheObjects) incHitsToMeta(ctx context.Context, dcache *diskCache, buc
 
 // Backend metadata could have changed through server side copy - reset cache metadata if that is the case
 func (c *cacheObjects) updateMetadataIfChanged(ctx context.Context, dcache *diskCache, bucket, object string, bkObjectInfo, cacheObjInfo ObjectInfo, rs *HTTPRangeSpec) error {
-
 	bkMeta := make(map[string]string, len(bkObjectInfo.UserDefined))
 	cacheMeta := make(map[string]string, len(cacheObjInfo.UserDefined))
 	for k, v := range bkObjectInfo.UserDefined {

cmd/dynamic-timeouts_test.go

@@ -26,7 +26,6 @@ import (
 )
 
 func TestDynamicTimeoutSingleIncrease(t *testing.T) {
-
 	timeout := newDynamicTimeout(time.Minute, time.Second)
 
 	initial := timeout.Timeout()
@@ -43,7 +42,6 @@ func TestDynamicTimeoutSingleIncrease(t *testing.T) {
 }
 
 func TestDynamicTimeoutDualIncrease(t *testing.T) {
-
 	timeout := newDynamicTimeout(time.Minute, time.Second)
 
 	initial := timeout.Timeout()
@@ -66,7 +64,6 @@ func TestDynamicTimeoutDualIncrease(t *testing.T) {
 }
 
 func TestDynamicTimeoutSingleDecrease(t *testing.T) {
-
 	timeout := newDynamicTimeout(time.Minute, time.Second)
 
 	initial := timeout.Timeout()
@@ -83,7 +80,6 @@ func TestDynamicTimeoutSingleDecrease(t *testing.T) {
 }
 
 func TestDynamicTimeoutDualDecrease(t *testing.T) {
-
 	timeout := newDynamicTimeout(time.Minute, time.Second)
 
 	initial := timeout.Timeout()
@@ -106,7 +102,6 @@ func TestDynamicTimeoutDualDecrease(t *testing.T) {
 }
 
 func TestDynamicTimeoutManyDecreases(t *testing.T) {
-
 	timeout := newDynamicTimeout(time.Minute, time.Second)
 
 	initial := timeout.Timeout()
@@ -116,7 +111,6 @@ func TestDynamicTimeoutManyDecreases(t *testing.T) {
 		for i := 0; i < dynamicTimeoutLogSize; i++ {
 			timeout.LogSuccess(successTimeout)
 		}
-
 	}
 
 	adjusted := timeout.Timeout()
@@ -151,7 +145,6 @@ func TestDynamicTimeoutConcurrent(t *testing.T) {
 }
 
 func TestDynamicTimeoutHitMinimum(t *testing.T) {
-
 	const minimum = 30 * time.Second
 	timeout := newDynamicTimeout(time.Minute, minimum)
 
@@ -172,7 +165,6 @@ func TestDynamicTimeoutHitMinimum(t *testing.T) {
 }
 
 func testDynamicTimeoutAdjust(t *testing.T, timeout *dynamicTimeout, f func() float64) {
-
 	const successTimeout = 20 * time.Second
 
 	for i := 0; i < dynamicTimeoutLogSize; i++ {
@@ -192,7 +184,6 @@ func testDynamicTimeoutAdjust(t *testing.T, timeout *dynamicTimeout, f func() fl
 }
 
 func TestDynamicTimeoutAdjustExponential(t *testing.T) {
-
 	timeout := newDynamicTimeout(time.Minute, time.Second)
 
 	rand.Seed(0)
@@ -200,9 +191,7 @@ func TestDynamicTimeoutAdjustExponential(t *testing.T) {
 	initial := timeout.Timeout()
 
 	for try := 0; try < 10; try++ {
-
 		testDynamicTimeoutAdjust(t, timeout, rand.ExpFloat64)
-
 	}
 
 	adjusted := timeout.Timeout()
@@ -212,7 +201,6 @@ func TestDynamicTimeoutAdjustExponential(t *testing.T) {
 }
 
 func TestDynamicTimeoutAdjustNormalized(t *testing.T) {
-
 	timeout := newDynamicTimeout(time.Minute, time.Second)
 
 	rand.Seed(0)
@@ -220,11 +208,9 @@ func TestDynamicTimeoutAdjustNormalized(t *testing.T) {
 	initial := timeout.Timeout()
 
 	for try := 0; try < 10; try++ {
-
 		testDynamicTimeoutAdjust(t, timeout, func() float64 {
 			return 1.0 + rand.NormFloat64()
 		})
-
 	}
 
 	adjusted := timeout.Timeout()

cmd/encryption-v1.go

@@ -186,7 +186,7 @@ func rotateKey(oldKey []byte, newKeyID string, newKey []byte, bucket, object str
 		// client provided it. Therefore, we create a copy
 		// of the client provided context and add the bucket
 		// key, if not present.
-		var kmsCtx = kms.Context{}
+		kmsCtx := kms.Context{}
 		for k, v := range ctx {
 			kmsCtx[k] = v
 		}
@@ -253,7 +253,7 @@ func newEncryptMetadata(kind crypto.Type, keyID string, key []byte, bucket, obje
 		// client provided it. Therefore, we create a copy
 		// of the client provided context and add the bucket
 		// key, if not present.
-		var kmsCtx = kms.Context{}
+		kmsCtx := kms.Context{}
 		for k, v := range ctx {
 			kmsCtx[k] = v
 		}
@@ -443,7 +443,6 @@ func newDecryptReaderWithObjectKey(client io.Reader, objectEncryptionKey []byte,
 // DecryptBlocksRequestR - same as DecryptBlocksRequest but with a
 // reader
 func DecryptBlocksRequestR(inputReader io.Reader, h http.Header, seqNumber uint32, partStart int, oi ObjectInfo, copySource bool) (io.Reader, error) {
-
 	bucket, object := oi.Bucket, oi.Name
 	// Single part case
 	if !oi.isMultipart() {

cmd/encryption-v1_test.go

@@ -64,7 +64,6 @@ func TestEncryptRequest(t *testing.T) {
 			req.Header.Set(k, v)
 		}
 		_, _, err := EncryptRequest(content, req, "bucket", "object", test.metadata)
-
 		if err != nil {
 			t.Fatalf("Test %d: Failed to encrypt request: %v", i, err)
 		}
@@ -285,14 +284,13 @@ func TestGetDecryptedRange(t *testing.T) {
 	)
 
 	// Single part object tests
-	var (
-		mkSPObj = func(s int64) ObjectInfo {
-			return ObjectInfo{
-				Size:        getEncSize(s),
-				UserDefined: udMap(false),
-			}
+
+	mkSPObj := func(s int64) ObjectInfo {
+		return ObjectInfo{
+			Size:        getEncSize(s),
+			UserDefined: udMap(false),
 		}
-	)
+	}
 
 	testSP := []struct {
 		decSz int64
@@ -325,7 +323,7 @@ func TestGetDecryptedRange(t *testing.T) {
 			if err != nil {
 				t.Errorf("Case %d: unexpected err: %v", i, err)
 			}
-			var rLen = pkgSz + 32
+			rLen := pkgSz + 32
 			if test.decSz < pkgSz {
 				rLen = test.decSz + 32
 			}
@@ -341,7 +339,7 @@ func TestGetDecryptedRange(t *testing.T) {
 			if err != nil {
 				t.Errorf("Case %d: unexpected err: %v", i, err)
 			}
-			var rLen = (pkgSz + 32) * 2
+			rLen := (pkgSz + 32) * 2
 			if test.decSz < 2*pkgSz {
 				rLen = (pkgSz + 32) + (test.decSz - pkgSz + 32)
 			}
@@ -356,7 +354,7 @@ func TestGetDecryptedRange(t *testing.T) {
 			if err != nil {
 				t.Errorf("Case %d: unexpected err: %v", i, err)
 			}
-			var rLen = (pkgSz + 32) * 2
+			rLen := (pkgSz + 32) * 2
 			if test.decSz-pkgSz < 2*pkgSz {
 				rLen = (pkgSz + 32) + (test.decSz - pkgSz + 32*2)
 			}
@@ -551,60 +549,90 @@ var getDefaultOptsTests = []struct {
 	encryptionType encrypt.Type
 	err            error
 }{
-	{headers: http.Header{xhttp.AmzServerSideEncryptionCustomerAlgorithm: []string{"AES256"},
-		xhttp.AmzServerSideEncryptionCustomerKey:    []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
-		xhttp.AmzServerSideEncryptionCustomerKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="}},
+	{
+		headers: http.Header{
+			xhttp.AmzServerSideEncryptionCustomerAlgorithm: []string{"AES256"},
+			xhttp.AmzServerSideEncryptionCustomerKey:       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			xhttp.AmzServerSideEncryptionCustomerKeyMD5:    []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
 		copySource:     false,
 		metadata:       nil,
 		encryptionType: encrypt.SSEC,
-		err:            nil}, // 0
-	{headers: http.Header{xhttp.AmzServerSideEncryptionCustomerAlgorithm: []string{"AES256"},
-		xhttp.AmzServerSideEncryptionCustomerKey:    []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
-		xhttp.AmzServerSideEncryptionCustomerKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="}},
+		err:            nil,
+	}, // 0
+	{
+		headers: http.Header{
+			xhttp.AmzServerSideEncryptionCustomerAlgorithm: []string{"AES256"},
+			xhttp.AmzServerSideEncryptionCustomerKey:       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			xhttp.AmzServerSideEncryptionCustomerKeyMD5:    []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
 		copySource:     true,
 		metadata:       nil,
 		encryptionType: "",
-		err:            nil}, // 1
-	{headers: http.Header{xhttp.AmzServerSideEncryptionCustomerAlgorithm: []string{"AES256"},
-		xhttp.AmzServerSideEncryptionCustomerKey:    []string{"Mz"},
-		xhttp.AmzServerSideEncryptionCustomerKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="}},
+		err:            nil,
+	}, // 1
+	{
+		headers: http.Header{
+			xhttp.AmzServerSideEncryptionCustomerAlgorithm: []string{"AES256"},
+			xhttp.AmzServerSideEncryptionCustomerKey:       []string{"Mz"},
+			xhttp.AmzServerSideEncryptionCustomerKeyMD5:    []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
 		copySource:     false,
 		metadata:       nil,
 		encryptionType: "",
-		err:            crypto.ErrInvalidCustomerKey}, // 2
-	{headers: http.Header{xhttp.AmzServerSideEncryption: []string{"AES256"}},
+		err:            crypto.ErrInvalidCustomerKey,
+	}, // 2
+	{
+		headers:        http.Header{xhttp.AmzServerSideEncryption: []string{"AES256"}},
 		copySource:     false,
 		metadata:       nil,
 		encryptionType: encrypt.S3,
-		err:            nil}, // 3
-	{headers: http.Header{},
+		err:            nil,
+	}, // 3
+	{
+		headers:    http.Header{},
 		copySource: false,
-		metadata: map[string]string{crypto.MetaSealedKeyS3: base64.StdEncoding.EncodeToString(make([]byte, 64)),
+		metadata: map[string]string{
+			crypto.MetaSealedKeyS3:       base64.StdEncoding.EncodeToString(make([]byte, 64)),
 			crypto.MetaKeyID:             "kms-key",
-			crypto.MetaDataEncryptionKey: "m-key"},
+			crypto.MetaDataEncryptionKey: "m-key",
+		},
 		encryptionType: encrypt.S3,
-		err:            nil}, // 4
-	{headers: http.Header{},
+		err:            nil,
+	}, // 4
+	{
+		headers:    http.Header{},
 		copySource: true,
-		metadata: map[string]string{crypto.MetaSealedKeyS3: base64.StdEncoding.EncodeToString(make([]byte, 64)),
+		metadata: map[string]string{
+			crypto.MetaSealedKeyS3:       base64.StdEncoding.EncodeToString(make([]byte, 64)),
 			crypto.MetaKeyID:             "kms-key",
-			crypto.MetaDataEncryptionKey: "m-key"},
+			crypto.MetaDataEncryptionKey: "m-key",
+		},
 		encryptionType: "",
-		err:            nil}, // 5
-	{headers: http.Header{xhttp.AmzServerSideEncryptionCopyCustomerAlgorithm: []string{"AES256"},
-		xhttp.AmzServerSideEncryptionCopyCustomerKey:    []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
-		xhttp.AmzServerSideEncryptionCopyCustomerKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="}},
+		err:            nil,
+	}, // 5
+	{
+		headers: http.Header{
+			xhttp.AmzServerSideEncryptionCopyCustomerAlgorithm: []string{"AES256"},
+			xhttp.AmzServerSideEncryptionCopyCustomerKey:       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			xhttp.AmzServerSideEncryptionCopyCustomerKeyMD5:    []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
 		copySource:     true,
 		metadata:       nil,
 		encryptionType: encrypt.SSEC,
-		err:            nil}, // 6
-	{headers: http.Header{xhttp.AmzServerSideEncryptionCopyCustomerAlgorithm: []string{"AES256"},
-		xhttp.AmzServerSideEncryptionCopyCustomerKey:    []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
-		xhttp.AmzServerSideEncryptionCopyCustomerKeyMD5: []string{"7PpPLAK26ONlVUGOWlusfg=="}},
+		err:            nil,
+	}, // 6
+	{
+		headers: http.Header{
+			xhttp.AmzServerSideEncryptionCopyCustomerAlgorithm: []string{"AES256"},
+			xhttp.AmzServerSideEncryptionCopyCustomerKey:       []string{"MzJieXRlc2xvbmdzZWNyZXRrZXltdXN0cHJvdmlkZWQ="},
+			xhttp.AmzServerSideEncryptionCopyCustomerKeyMD5:    []string{"7PpPLAK26ONlVUGOWlusfg=="},
+		},
 		copySource:     false,
 		metadata:       nil,
 		encryptionType: "",
-		err:            nil}, // 7
+		err:            nil,
+	}, // 7
 }
 
 func TestGetDefaultOpts(t *testing.T) {

cmd/endpoint-ellipses.go

@@ -90,7 +90,7 @@ func commonSetDriveCount(divisibleSize uint64, setCounts []uint64) (setSize uint
 // input argument patterns, the symmetry calculation is to ensure that
 // we also use uniform number of drives common across all ellipses patterns.
 func possibleSetCountsWithSymmetry(setCounts []uint64, argPatterns []ellipses.ArgPattern) []uint64 {
-	var newSetCounts = make(map[uint64]struct{})
+	newSetCounts := make(map[uint64]struct{})
 	for _, ss := range setCounts {
 		var symmetry bool
 		for _, argPattern := range argPatterns {
@@ -224,7 +224,7 @@ func (s endpointSet) getEndpoints() (endpoints []string) {
 // this function also intelligently decides on what will
 // be the right set size etc.
 func (s endpointSet) Get() (sets [][]string) {
-	var k = uint64(0)
+	k := uint64(0)
 	endpoints := s.getEndpoints()
 	for i := range s.setIndexes {
 		for j := range s.setIndexes[i] {
@@ -253,7 +253,7 @@ func getTotalSizes(argPatterns []ellipses.ArgPattern) []uint64 {
 // of endpoints following the ellipses pattern, this is what is used
 // by the object layer for initializing itself.
 func parseEndpointSet(customSetDriveCount uint64, args ...string) (ep endpointSet, err error) {
-	var argPatterns = make([]ellipses.ArgPattern, len(args))
+	argPatterns := make([]ellipses.ArgPattern, len(args))
 	for i, arg := range args {
 		patterns, perr := ellipses.FindEllipsesPatterns(arg)
 		if perr != nil {
@@ -332,15 +332,13 @@ const (
 	EnvErasureSetDriveCount = "MINIO_ERASURE_SET_DRIVE_COUNT"
 )
 
-var (
-	globalCustomErasureDriveCount = false
-)
+var globalCustomErasureDriveCount = false
 
 // CreateServerEndpoints - validates and creates new endpoints from input args, supports
 // both ellipses and without ellipses transparently.
 func createServerEndpoints(serverAddr string, args ...string) (
-	endpointServerPools EndpointServerPools, setupType SetupType, err error) {
-
+	endpointServerPools EndpointServerPools, setupType SetupType, err error,
+) {
 	if len(args) == 0 {
 		return nil, -1, errInvalidArgument
 	}

cmd/endpoint-ellipses_test.go

@@ -72,7 +72,8 @@ func TestGetDivisibleSize(t *testing.T) {
 	testCases := []struct {
 		totalSizes []uint64
 		result     uint64
-	}{{[]uint64{24, 32, 16}, 8},
+	}{
+		{[]uint64{24, 32, 16}, 8},
 		{[]uint64{32, 8, 4}, 4},
 		{[]uint64{8, 8, 8}, 8},
 		{[]uint64{24}, 24},
@@ -168,7 +169,7 @@ func TestGetSetIndexesEnvOverride(t *testing.T) {
 	for _, testCase := range testCases {
 		testCase := testCase
 		t.Run("", func(t *testing.T) {
-			var argPatterns = make([]ellipses.ArgPattern, len(testCase.args))
+			argPatterns := make([]ellipses.ArgPattern, len(testCase.args))
 			for i, arg := range testCase.args {
 				patterns, err := ellipses.FindEllipsesPatterns(arg)
 				if err != nil {
@@ -290,7 +291,7 @@ func TestGetSetIndexes(t *testing.T) {
 	for _, testCase := range testCases {
 		testCase := testCase
 		t.Run("", func(t *testing.T) {
-			var argPatterns = make([]ellipses.ArgPattern, len(testCase.args))
+			argPatterns := make([]ellipses.ArgPattern, len(testCase.args))
 			for i, arg := range testCase.args {
 				patterns, err := ellipses.FindEllipsesPatterns(arg)
 				if err != nil {
@@ -552,8 +553,10 @@ func TestParseEndpointSet(t *testing.T) {
 					},
 				},
 				nil,
-				[][]uint64{{16, 16, 16, 16, 16, 16, 16, 16,
-					16, 16, 16, 16, 16, 16, 16, 16}},
+				[][]uint64{{
+					16, 16, 16, 16, 16, 16, 16, 16,
+					16, 16, 16, 16, 16, 16, 16, 16,
+				}},
 			},
 			true,
 		},

cmd/endpoint_test.go

@@ -238,13 +238,18 @@ func TestCreateEndpoints(t *testing.T) {
 		{"localhost:9000", [][]string{{"https://127.0.0.1:9000/d1", "https://localhost:9001/d1", "https://example.com/d1", "https://example.com/d2"}}, "", Endpoints{}, -1, fmt.Errorf("path '/d1' can not be served by different port on same address")},
 
 		// Erasure Setup with PathEndpointType
-		{":1234", [][]string{{"/d1", "/d2", "/d3", "/d4"}}, ":1234",
+		{
+			":1234",
+			[][]string{{"/d1", "/d2", "/d3", "/d4"}},
+			":1234",
 			Endpoints{
 				Endpoint{URL: &url.URL{Path: mustAbs("/d1")}, IsLocal: true},
 				Endpoint{URL: &url.URL{Path: mustAbs("/d2")}, IsLocal: true},
 				Endpoint{URL: &url.URL{Path: mustAbs("/d3")}, IsLocal: true},
 				Endpoint{URL: &url.URL{Path: mustAbs("/d4")}, IsLocal: true},
-			}, ErasureSetupType, nil},
+			},
+			ErasureSetupType, nil,
+		},
 		// DistErasure Setup with URLEndpointType
 		{":9000", [][]string{{"http://localhost/d1", "http://localhost/d2", "http://localhost/d3", "http://localhost/d4"}}, ":9000", Endpoints{
 			Endpoint{URL: &url.URL{Scheme: "http", Host: "localhost", Path: "/d1"}, IsLocal: true},
@@ -350,12 +355,18 @@ func TestGetLocalPeer(t *testing.T) {
 		expectedResult string
 	}{
 		{[]string{"/d1", "/d2", "d3", "d4"}, "127.0.0.1:9000"},
-		{[]string{"http://localhost:9000/d1", "http://localhost:9000/d2", "http://example.org:9000/d3", "http://example.com:9000/d4"},
-			"localhost:9000"},
-		{[]string{"http://localhost:9000/d1", "http://example.org:9000/d2", "http://example.com:9000/d3", "http://example.net:9000/d4"},
-			"localhost:9000"},
-		{[]string{"http://localhost:9000/d1", "http://localhost:9001/d2", "http://localhost:9002/d3", "http://localhost:9003/d4"},
-			"localhost:9000"},
+		{
+			[]string{"http://localhost:9000/d1", "http://localhost:9000/d2", "http://example.org:9000/d3", "http://example.com:9000/d4"},
+			"localhost:9000",
+		},
+		{
+			[]string{"http://localhost:9000/d1", "http://example.org:9000/d2", "http://example.com:9000/d3", "http://example.net:9000/d4"},
+			"localhost:9000",
+		},
+		{
+			[]string{"http://localhost:9000/d1", "http://localhost:9001/d2", "http://localhost:9002/d3", "http://localhost:9003/d4"},
+			"localhost:9000",
+		},
 	}
 
 	for i, testCase := range testCases {

cmd/erasure-bucket.go

@@ -91,7 +91,7 @@ func (er erasureObjects) getBucketInfo(ctx context.Context, bucketName string) (
 	storageDisks := er.getDisks()
 
 	g := errgroup.WithNErrs(len(storageDisks))
-	var bucketsInfo = make([]BucketInfo, len(storageDisks))
+	bucketsInfo := make([]BucketInfo, len(storageDisks))
 	// Undo previous make bucket entry on all underlying storage disks.
 	for index := range storageDisks {
 		index := index

cmd/erasure-coding.go

@@ -94,7 +94,7 @@ func (e *Erasure) EncodeData(ctx context.Context, data []byte) ([][]byte, error)
 // It only decodes the data blocks but does not verify them.
 // It returns an error if the decoding failed.
 func (e *Erasure) DecodeDataBlocks(data [][]byte) error {
-	var isZero = 0
+	isZero := 0
 	for _, b := range data {
 		if len(b) == 0 {
 			isZero++

cmd/erasure-common.go

@@ -50,7 +50,7 @@ func (er erasureObjects) getLoadBalancedDisks(optimized bool) []StorageAPI {
 
 	var wg sync.WaitGroup
 	var mu sync.Mutex
-	var newDisks = map[uint64][]StorageAPI{}
+	newDisks := map[uint64][]StorageAPI{}
 	// Based on the random shuffling return back randomized disks.
 	for _, i := range hashOrder(UTCNow().String(), len(disks)) {
 		i := i

cmd/erasure-healing-common.go

@@ -226,8 +226,8 @@ func getLatestFileInfo(ctx context.Context, partsMetadata []FileInfo, errs []err
 //   a not-found error or a hash-mismatch error.
 func disksWithAllParts(ctx context.Context, onlineDisks []StorageAPI, partsMetadata []FileInfo,
 	errs []error, latestMeta FileInfo, bucket, object string,
-	scanMode madmin.HealScanMode) ([]StorageAPI, []error, time.Time) {
-
+	scanMode madmin.HealScanMode) ([]StorageAPI, []error, time.Time,
+) {
 	var diskMTime time.Time
 	var shardFix bool
 	if !latestMeta.DataShardFixed() {

cmd/erasure-healing.go

@@ -811,8 +811,8 @@ func isObjectDirDangling(errs []error) (ok bool) {
 }
 
 func (er erasureObjects) purgeObjectDangling(ctx context.Context, bucket, object, versionID string,
-	metaArr []FileInfo, errs []error, dataErrs []error, opts madmin.HealOpts) (madmin.HealResultItem, error) {
-
+	metaArr []FileInfo, errs []error, dataErrs []error, opts madmin.HealOpts) (madmin.HealResultItem, error,
+) {
 	storageDisks := er.getDisks()
 	storageEndpoints := er.getEndpoints()
 	// Check if the object is dangling, if yes and user requested

cmd/erasure-metadata-utils_test.go

@@ -87,9 +87,13 @@ func TestReduceErrs(t *testing.T) {
 			errDiskNotFound,
 		}, []error{errDiskNotFound}, errVolumeNotFound},
 		{[]error{}, []error{}, errErasureReadQuorum},
-		{[]error{errFileNotFound, errFileNotFound, errFileNotFound,
-			errFileNotFound, errFileNotFound, nil, nil, nil, nil, nil},
-			nil, nil},
+		{
+			[]error{
+				errFileNotFound, errFileNotFound, errFileNotFound,
+				errFileNotFound, errFileNotFound, nil, nil, nil, nil, nil,
+			},
+			nil, nil,
+		},
 		// Checks if wrapped context cancelation errors are grouped as one.
 		{canceledErrs, nil, context.Canceled},
 	}

cmd/erasure-multipart.go

@@ -820,7 +820,7 @@ func (er erasureObjects) CompleteMultipartUpload(ctx context.Context, bucket str
 	onlineDisks, partsMetadata = shuffleDisksAndPartsMetadataByIndex(onlineDisks, partsMetadata, fi)
 
 	// Save current erasure metadata for validation.
-	var currentFI = fi
+	currentFI := fi
 
 	// Allocate parts similar to incoming slice.
 	fi.Parts = make([]ObjectPartInfo, len(parts))

cmd/erasure-object.go

@@ -145,7 +145,7 @@ func (er erasureObjects) CopyObject(ctx context.Context, srcBucket, srcObject, d
 // Read(Closer). When err != nil, the returned reader is always nil.
 func (er erasureObjects) GetObjectNInfo(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, lockType LockType, opts ObjectOptions) (gr *GetObjectReader, err error) {
 	var unlockOnDefer bool
-	var nsUnlocker = func() {}
+	nsUnlocker := func() {}
 	defer func() {
 		if unlockOnDefer {
 			nsUnlocker()
@@ -475,7 +475,6 @@ func (er erasureObjects) getObjectInfo(ctx context.Context, bucket, object strin
 	fi, _, _, err := er.getObjectFileInfo(ctx, bucket, object, opts, false)
 	if err != nil {
 		return objInfo, toObjectErr(err, bucket, object)
-
 	}
 	objInfo = fi.ToObjectInfo(bucket, object)
 	if opts.VersionID != "" && !fi.VersionPurgeStatus().Empty() {
@@ -1177,7 +1176,7 @@ func (er erasureObjects) DeleteObjects(ctx context.Context, bucket string, objec
 	}
 
 	// Initialize list of errors.
-	var delObjErrs = make([][]error, len(storageDisks))
+	delObjErrs := make([][]error, len(storageDisks))
 
 	var wg sync.WaitGroup
 	// Remove versions in bulk for each disk
@@ -1820,6 +1819,7 @@ func (er erasureObjects) restoreTransitionedObject(ctx context.Context, bucket s
 		})
 	}
 	_, err = er.CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts, ObjectOptions{
-		MTime: oi.ModTime})
+		MTime: oi.ModTime,
+	})
 	return setRestoreHeaderFn(oi, err)
 }

cmd/erasure-object_test.go

@@ -505,7 +505,6 @@ func TestGetObjectNoQuorum(t *testing.T) {
 			gr.Close()
 		}
 	}
-
 }
 
 func TestHeadObjectNoQuorum(t *testing.T) {

cmd/erasure-server-pool.go

@@ -243,7 +243,7 @@ func (z *erasureServerPools) getAvailablePoolIdx(ctx context.Context, bucket, ob
 // If there is not enough space the pool will return 0 bytes available.
 // Negative sizes are seen as 0 bytes.
 func (z *erasureServerPools) getServerPoolsAvailableSpace(ctx context.Context, bucket, object string, size int64) serverPoolsAvailableSpace {
-	var serverPools = make(serverPoolsAvailableSpace, len(z.serverPools))
+	serverPools := make(serverPoolsAvailableSpace, len(z.serverPools))
 
 	storageInfos := make([][]*DiskInfo, len(z.serverPools))
 	g := errgroup.WithNErrs(len(z.serverPools))
@@ -659,7 +659,6 @@ func (z *erasureServerPools) MakeBucketWithLocation(ctx context.Context, bucket
 
 	// Success.
 	return nil
-
 }
 
 func (z *erasureServerPools) GetObjectNInfo(ctx context.Context, bucket, object string, rs *HTTPRangeSpec, h http.Header, lockType LockType, opts ObjectOptions) (gr *GetObjectReader, err error) {
@@ -674,7 +673,7 @@ func (z *erasureServerPools) GetObjectNInfo(ctx context.Context, bucket, object
 	}
 
 	var unlockOnDefer bool
-	var nsUnlocker = func() {}
+	nsUnlocker := func() {}
 	defer func() {
 		if unlockOnDefer {
 			nsUnlocker()
@@ -1168,7 +1167,7 @@ func (z *erasureServerPools) ListMultipartUploads(ctx context.Context, bucket, p
 		return z.serverPools[0].ListMultipartUploads(ctx, bucket, prefix, keyMarker, uploadIDMarker, delimiter, maxUploads)
 	}
 
-	var poolResult = ListMultipartsInfo{}
+	poolResult := ListMultipartsInfo{}
 	poolResult.MaxUploads = maxUploads
 	poolResult.KeyMarker = keyMarker
 	poolResult.Prefix = prefix
@@ -1287,7 +1286,6 @@ func (z *erasureServerPools) GetMultipartInfo(ctx context.Context, bucket, objec
 		Object:   object,
 		UploadID: uploadID,
 	}
-
 }
 
 // ListObjectParts - lists all uploaded parts to an object in hashedSet.
@@ -1529,7 +1527,7 @@ func (z *erasureServerPools) HealFormat(ctx context.Context, dryRun bool) (madmi
 	ctx = lkctx.Context()
 	defer formatLock.Unlock(lkctx.Cancel)
 
-	var r = madmin.HealResultItem{
+	r := madmin.HealResultItem{
 		Type:   madmin.HealItemMetadata,
 		Detail: "disk-format",
 	}
@@ -1561,7 +1559,7 @@ func (z *erasureServerPools) HealFormat(ctx context.Context, dryRun bool) (madmi
 }
 
 func (z *erasureServerPools) HealBucket(ctx context.Context, bucket string, opts madmin.HealOpts) (madmin.HealResultItem, error) {
-	var r = madmin.HealResultItem{
+	r := madmin.HealResultItem{
 		Type:   madmin.HealItemBucket,
 		Bucket: bucket,
 	}

cmd/erasure-sets.go

@@ -206,7 +206,7 @@ func (s *erasureSets) connectDisks() {
 	}()
 
 	var wg sync.WaitGroup
-	var setsJustConnected = make([]bool, s.setCount)
+	setsJustConnected := make([]bool, s.setCount)
 	diskMap := s.getDiskMap()
 	for _, endpoint := range s.endpoints {
 		if isEndpointConnectionStable(diskMap, endpoint, s.lastConnectDisksOpTime) {
@@ -398,7 +398,7 @@ func newErasureSets(ctx context.Context, endpoints Endpoints, storageDisks []Sto
 		s.erasureDisks[i] = make([]StorageAPI, setDriveCount)
 	}
 
-	var erasureLockers = map[string]dsync.NetLocker{}
+	erasureLockers := map[string]dsync.NetLocker{}
 	for _, endpoint := range endpoints {
 		if _, ok := erasureLockers[endpoint.Host]; !ok {
 			erasureLockers[endpoint.Host] = newLockAPI(endpoint)
@@ -406,7 +406,7 @@ func newErasureSets(ctx context.Context, endpoints Endpoints, storageDisks []Sto
 	}
 
 	for i := 0; i < setCount; i++ {
-		var lockerEpSet = set.NewStringSet()
+		lockerEpSet := set.NewStringSet()
 		for j := 0; j < setDriveCount; j++ {
 			endpoint := endpoints[i*setDriveCount+j]
 			// Only add lockers per endpoint.
@@ -865,7 +865,7 @@ func undoDeleteBucketSets(ctx context.Context, bucket string, sets []*erasureObj
 // that all buckets are present on all sets.
 func (s *erasureSets) ListBuckets(ctx context.Context) (buckets []BucketInfo, err error) {
 	var listBuckets []BucketInfo
-	var healBuckets = map[string]VolInfo{}
+	healBuckets := map[string]VolInfo{}
 	for _, set := range s.sets {
 		// lists all unique buckets across drives.
 		if err := listAllBuckets(ctx, set.getDisks(), healBuckets, s.defaultParityCount); err != nil {
@@ -958,13 +958,13 @@ func (s *erasureSets) DeleteObjects(ctx context.Context, bucket string, objects
 	}
 
 	// The result of delete operation on all passed objects
-	var delErrs = make([]error, len(objects))
+	delErrs := make([]error, len(objects))
 
 	// The result of delete objects
-	var delObjects = make([]DeletedObject, len(objects))
+	delObjects := make([]DeletedObject, len(objects))
 
 	// A map between a set and its associated objects
-	var objSetMap = make(map[int][]delObj)
+	objSetMap := make(map[int][]delObj)
 
 	// Group objects by set index
 	for i, object := range objects {
@@ -1147,7 +1147,7 @@ func formatsToDrivesInfo(endpoints Endpoints, formats []*formatErasureV3, sErrs
 	// result, also populate disks to be healed.
 	for i, format := range formats {
 		drive := endpoints.GetString(i)
-		var state = madmin.DriveStateCorrupt
+		state := madmin.DriveStateCorrupt
 		switch {
 		case format != nil:
 			state = madmin.DriveStateOk
@@ -1274,7 +1274,7 @@ func (s *erasureSets) HealFormat(ctx context.Context, dryRun bool) (res madmin.H
 	newFormatSets := newHealFormatSets(refFormat, s.setCount, s.setDriveCount, formats, sErrs)
 
 	if !dryRun {
-		var tmpNewFormats = make([]*formatErasureV3, s.setCount*s.setDriveCount)
+		tmpNewFormats := make([]*formatErasureV3, s.setCount*s.setDriveCount)
 		for i := range newFormatSets {
 			for j := range newFormatSets[i] {
 				if newFormatSets[i][j] == nil {

cmd/erasure-sets_test.go

@@ -162,7 +162,7 @@ func TestNewErasureSets(t *testing.T) {
 	ctx, cancel := context.WithCancel(context.Background())
 	defer cancel()
 
-	var nDisks = 16 // Maximum disks.
+	nDisks := 16 // Maximum disks.
 	var erasureDisks []string
 	for i := 0; i < nDisks; i++ {
 		// Do not attempt to create this path, the test validates

cmd/erasure.go

@@ -417,7 +417,7 @@ func (er erasureObjects) nsScanner(ctx context.Context, buckets []BucketInfo, bf
 	saverWg.Add(1)
 	go func() {
 		// Add jitter to the update time so multiple sets don't sync up.
-		var updateTime = 30*time.Second + time.Duration(float64(10*time.Second)*rand.Float64())
+		updateTime := 30*time.Second + time.Duration(float64(10*time.Second)*rand.Float64())
 		t := time.NewTicker(updateTime)
 		defer t.Stop()
 		defer saverWg.Done()

cmd/format-disk-cache.go

@@ -77,9 +77,9 @@ type formatCacheVersionDetect struct {
 // Return a slice of format, to be used to format uninitialized disks.
 func newFormatCacheV2(drives []string) []*formatCacheV2 {
 	diskCount := len(drives)
-	var disks = make([]string, diskCount)
+	disks := make([]string, diskCount)
 
-	var formats = make([]*formatCacheV2, diskCount)
+	formats := make([]*formatCacheV2, diskCount)
 
 	for i := 0; i < diskCount; i++ {
 		format := &formatCacheV2{}
@@ -110,7 +110,7 @@ func formatCacheGetVersion(r io.ReadSeeker) (string, error) {
 // Creates a new cache format.json if unformatted.
 func createFormatCache(fsFormatPath string, format *formatCacheV1) error {
 	// open file using READ & WRITE permission
-	var file, err = os.OpenFile(fsFormatPath, os.O_RDWR|os.O_CREATE, 0600)
+	file, err := os.OpenFile(fsFormatPath, os.O_RDWR|os.O_CREATE, 0o600)
 	if err != nil {
 		return err
 	}
@@ -133,7 +133,7 @@ func createFormatCache(fsFormatPath string, format *formatCacheV1) error {
 func initFormatCache(ctx context.Context, drives []string) (formats []*formatCacheV2, err error) {
 	nformats := newFormatCacheV2(drives)
 	for i, drive := range drives {
-		if err = os.MkdirAll(pathJoin(drive, minioMetaBucket), 0777); err != nil {
+		if err = os.MkdirAll(pathJoin(drive, minioMetaBucket), 0o777); err != nil {
 			logger.GetReqInfo(ctx).AppendTags("drive", drive)
 			logger.LogIf(ctx, err)
 			return nil, err
@@ -156,7 +156,6 @@ func loadFormatCache(ctx context.Context, drives []string) ([]*formatCacheV2, bo
 	for i, drive := range drives {
 		cacheFormatPath := pathJoin(drive, minioMetaBucket, formatConfigFile)
 		f, err := os.OpenFile(cacheFormatPath, os.O_RDWR, 0)
-
 		if err != nil {
 			if osIsNotExist(err) {
 				continue
@@ -232,7 +231,7 @@ func checkFormatCacheValues(migrating bool, formats []*formatCacheV2) (int, erro
 // checkCacheDisksConsistency - checks if "This" disk uuid on each disk is consistent with all "Disks" slices
 // across disks.
 func checkCacheDiskConsistency(formats []*formatCacheV2) error {
-	var disks = make([]string, len(formats))
+	disks := make([]string, len(formats))
 	// Collect currently available disk uuids.
 	for index, format := range formats {
 		if format == nil {
@@ -413,7 +412,7 @@ func migrateOldCache(ctx context.Context, c *diskCache) error {
 			object = strings.TrimSuffix(object, "/")
 
 			destdir := getCacheSHADir(c.dir, bucket, object)
-			if err := os.MkdirAll(destdir, 0777); err != nil {
+			if err := os.MkdirAll(destdir, 0o777); err != nil {
 				return err
 			}
 			prevCachedPath := path.Join(c.dir, bucket, object)
@@ -427,7 +426,7 @@ func migrateOldCache(ctx context.Context, c *diskCache) error {
 			}
 			// marshal cache metadata after adding version and stat info
 			meta := &cacheMeta{}
-			var json = jsoniter.ConfigCompatibleWithStandardLibrary
+			json := jsoniter.ConfigCompatibleWithStandardLibrary
 			if err = json.Unmarshal(metaBytes, &meta); err != nil {
 				return err
 			}
@@ -459,7 +458,7 @@ func migrateOldCache(ctx context.Context, c *diskCache) error {
 				return err
 			}
 
-			if err = ioutil.WriteFile(metaPath, jsonData, 0644); err != nil {
+			if err = ioutil.WriteFile(metaPath, jsonData, 0o644); err != nil {
 				return err
 			}
 		}
@@ -475,7 +474,6 @@ func migrateOldCache(ctx context.Context, c *diskCache) error {
 	removeAll(path.Join(c.dir, minioMetaBucket, "buckets"))
 
 	return migrateCacheFormatJSON(cacheFormatPath)
-
 }
 
 func migrateCacheFormatJSON(cacheFormatPath string) error {

cmd/format-disk-cache_test.go

@@ -245,7 +245,7 @@ func genFormatCacheInvalidDisksOrder() []*formatCacheV2 {
 		formatConfigs[index] = format
 	}
 	// Re order disks for failure case.
-	var disks1 = make([]string, 8)
+	disks1 := make([]string, 8)
 	copy(disks1, disks)
 	disks1[1], disks1[2] = disks[2], disks[1]
 	formatConfigs[2].Cache.Disks = disks1

cmd/format-erasure.go

@@ -242,7 +242,7 @@ func formatErasureMigrateV1ToV2(export, version string) error {
 	if err != nil {
 		return err
 	}
-	return ioutil.WriteFile(formatPath, b, 0666)
+	return ioutil.WriteFile(formatPath, b, 0o666)
 }
 
 // Migrates V2 for format.json to V3 (Flat hierarchy for multipart)
@@ -266,7 +266,7 @@ func formatErasureMigrateV2ToV3(export, version string) error {
 		return err
 	}
 
-	if err = mkdirAll(pathJoin(export, minioMetaMultipartBucket), 0755); err != nil {
+	if err = mkdirAll(pathJoin(export, minioMetaMultipartBucket), 0o755); err != nil {
 		return err
 	}
 
@@ -284,12 +284,12 @@ func formatErasureMigrateV2ToV3(export, version string) error {
 	if err != nil {
 		return err
 	}
-	return ioutil.WriteFile(formatPath, b, 0666)
+	return ioutil.WriteFile(formatPath, b, 0o666)
 }
 
 // countErrs - count a specific error.
 func countErrs(errs []error, err error) int {
-	var i = 0
+	i := 0
 	for _, err1 := range errs {
 		if err1 == err {
 			i++
@@ -314,7 +314,7 @@ func loadFormatErasureAll(storageDisks []StorageAPI, heal bool) ([]*formatErasur
 	g := errgroup.WithNErrs(len(storageDisks))
 
 	// Initialize format configs.
-	var formats = make([]*formatErasureV3, len(storageDisks))
+	formats := make([]*formatErasureV3, len(storageDisks))
 
 	// Load format from each disk in parallel
 	for index := range storageDisks {
@@ -534,7 +534,6 @@ func formatErasureFixDeploymentID(endpoints Endpoints, storageDisks []StorageAPI
 	// Deployment ID needs to be set on all the disks.
 	// Save `format.json` across all disks.
 	return saveFormatErasureAll(GlobalContext, storageDisks, formats)
-
 }
 
 // Update only the valid local disks which have not been updated before.
@@ -662,7 +661,6 @@ func formatErasureV3Check(reference *formatErasureV3, format *formatErasureV3) e
 
 // Initializes meta volume only on local storage disks.
 func initErasureMetaVolumesInLocalDisks(storageDisks []StorageAPI, formats []*formatErasureV3) error {
-
 	// Compute the local disks eligible for meta volumes (re)initialization
 	disksToInit := make([]StorageAPI, 0, len(storageDisks))
 	for index := range storageDisks {
@@ -811,7 +809,6 @@ func fixFormatErasureV3(storageDisks []StorageAPI, endpoints Endpoints, formats
 		}
 	}
 	return nil
-
 }
 
 // initFormatErasure - save Erasure format configuration on all disks.

cmd/format-erasure_test.go

@@ -124,11 +124,11 @@ func TestFormatErasureMigrate(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	if err = os.MkdirAll(pathJoin(rootPath, minioMetaBucket), os.FileMode(0755)); err != nil {
+	if err = os.MkdirAll(pathJoin(rootPath, minioMetaBucket), os.FileMode(0o755)); err != nil {
 		t.Fatal(err)
 	}
 
-	if err = ioutil.WriteFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile), b, os.FileMode(0644)); err != nil {
+	if err = ioutil.WriteFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile), b, os.FileMode(0o644)); err != nil {
 		t.Fatal(err)
 	}
 
@@ -175,7 +175,7 @@ func TestFormatErasureMigrate(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	if err = ioutil.WriteFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile), b, os.FileMode(0644)); err != nil {
+	if err = ioutil.WriteFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile), b, os.FileMode(0o644)); err != nil {
 		t.Fatal(err)
 	}
 
@@ -195,7 +195,7 @@ func TestFormatErasureMigrate(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	if err = ioutil.WriteFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile), b, os.FileMode(0644)); err != nil {
+	if err = ioutil.WriteFile(pathJoin(rootPath, minioMetaBucket, formatConfigFile), b, os.FileMode(0o644)); err != nil {
 		t.Fatal(err)
 	}
 

cmd/format-fs.go

@@ -113,7 +113,7 @@ func formatFSMigrateV1ToV2(ctx context.Context, wlk *lock.LockedFile, fsPath str
 		return err
 	}
 
-	if err = os.MkdirAll(path.Join(fsPath, minioMetaMultipartBucket), 0755); err != nil {
+	if err = os.MkdirAll(path.Join(fsPath, minioMetaMultipartBucket), 0o755); err != nil {
 		return err
 	}
 
@@ -165,7 +165,7 @@ func formatFSMigrate(ctx context.Context, wlk *lock.LockedFile, fsPath string) e
 func createFormatFS(fsFormatPath string) error {
 	// Attempt a write lock on formatConfigFile `format.json`
 	// file stored in minioMetaBucket(.minio.sys) directory.
-	lk, err := lock.TryLockedOpenFile(fsFormatPath, os.O_RDWR|os.O_CREATE, 0600)
+	lk, err := lock.TryLockedOpenFile(fsFormatPath, os.O_RDWR|os.O_CREATE, 0o600)
 	if err != nil {
 		return err
 	}

cmd/fs-v1-helpers.go

@@ -123,7 +123,7 @@ func fsMkdir(ctx context.Context, dirPath string) (err error) {
 		return err
 	}
 
-	if err = os.Mkdir((dirPath), 0777); err != nil {
+	if err = os.Mkdir((dirPath), 0o777); err != nil {
 		switch {
 		case osIsExist(err):
 			return errVolumeExists
@@ -309,7 +309,7 @@ func fsCreateFile(ctx context.Context, filePath string, reader io.Reader, falloc
 		return 0, err
 	}
 
-	if err := mkdirAll(pathutil.Dir(filePath), 0777); err != nil {
+	if err := mkdirAll(pathutil.Dir(filePath), 0o777); err != nil {
 		switch {
 		case osIsPermission(err):
 			return 0, errFileAccessDenied
@@ -329,7 +329,7 @@ func fsCreateFile(ctx context.Context, filePath string, reader io.Reader, falloc
 	if globalFSOSync {
 		flags |= os.O_SYNC
 	}
-	writer, err := lock.Open(filePath, flags, 0666)
+	writer, err := lock.Open(filePath, flags, 0o666)
 	if err != nil {
 		return 0, osErrToFileErr(err)
 	}

cmd/fs-v1-helpers_test.go

@@ -75,7 +75,7 @@ func TestFSStats(t *testing.T) {
 		t.Fatalf("Unable to create volume, %s", err)
 	}
 
-	var reader = bytes.NewReader([]byte("Hello, world"))
+	reader := bytes.NewReader([]byte("Hello, world"))
 	if _, err = fsCreateFile(GlobalContext, pathJoin(path, "success-vol", "success-file"), reader, 0); err != nil {
 		t.Fatalf("Unable to create file, %s", err)
 	}
@@ -201,7 +201,7 @@ func TestFSCreateAndOpen(t *testing.T) {
 		t.Fatal("Unexpected error", err)
 	}
 
-	var reader = bytes.NewReader([]byte("Hello, world"))
+	reader := bytes.NewReader([]byte("Hello, world"))
 	if _, err = fsCreateFile(GlobalContext, pathJoin(path, "success-vol", "success-file"), reader, 0); err != nil {
 		t.Fatalf("Unable to create file, %s", err)
 	}
@@ -259,7 +259,7 @@ func TestFSDeletes(t *testing.T) {
 		t.Fatalf("Unable to create directory, %s", err)
 	}
 
-	var reader = bytes.NewReader([]byte("Hello, world"))
+	reader := bytes.NewReader([]byte("Hello, world"))
 	if _, err = fsCreateFile(GlobalContext, pathJoin(path, "success-vol", "success-file"), reader, reader.Size()); err != nil {
 		t.Fatalf("Unable to create file, %s", err)
 	}
@@ -271,7 +271,7 @@ func TestFSDeletes(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	err = ioutil.WriteFile(pathJoin(path, "success-vol", "not-empty", "file"), []byte("data"), 0777)
+	err = ioutil.WriteFile(pathJoin(path, "success-vol", "not-empty", "file"), []byte("data"), 0o777)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -368,7 +368,7 @@ func BenchmarkFSDeleteFile(b *testing.B) {
 	// We need to create and delete the file sequentially inside the benchmark.
 	for i := 0; i < b.N; i++ {
 		b.StopTimer()
-		err = ioutil.WriteFile(filename, []byte("data"), 0777)
+		err = ioutil.WriteFile(filename, []byte("data"), 0o777)
 		if err != nil {
 			b.Fatal(err)
 		}
@@ -395,7 +395,7 @@ func TestFSRemoves(t *testing.T) {
 		t.Fatalf("Unable to create directory, %s", err)
 	}
 
-	var reader = bytes.NewReader([]byte("Hello, world"))
+	reader := bytes.NewReader([]byte("Hello, world"))
 	if _, err = fsCreateFile(GlobalContext, pathJoin(path, "success-vol", "success-file"), reader, 0); err != nil {
 		t.Fatalf("Unable to create file, %s", err)
 	}
@@ -514,7 +514,7 @@ func TestFSRemoveMeta(t *testing.T) {
 
 	filePath := pathJoin(fsPath, "success-vol", "success-file")
 
-	var reader = bytes.NewReader([]byte("Hello, world"))
+	reader := bytes.NewReader([]byte("Hello, world"))
 	if _, err = fsCreateFile(GlobalContext, filePath, reader, 0); err != nil {
 		t.Fatalf("Unable to create file, %s", err)
 	}
@@ -556,7 +556,7 @@ func TestFSIsFile(t *testing.T) {
 
 	filePath := pathJoin(dirPath, "tmpfile")
 
-	if err = ioutil.WriteFile(filePath, nil, 0777); err != nil {
+	if err = ioutil.WriteFile(filePath, nil, 0o777); err != nil {
 		t.Fatalf("Unable to create file %s", filePath)
 	}
 

cmd/fs-v1-metadata.go

@@ -91,7 +91,7 @@ func (c *FSChecksumInfoV1) UnmarshalJSON(data []byte) error {
 	}
 
 	var info checksuminfo
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	err := json.Unmarshal(data, &info)
 	if err != nil {
 		return err
@@ -230,7 +230,7 @@ func (m *fsMetaV1) ReadFrom(ctx context.Context, lk *lock.LockedFile) (n int64,
 		return 0, io.EOF
 	}
 
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err = json.Unmarshal(fsMetaBuf, m); err != nil {
 		return 0, err
 	}

cmd/fs-v1-multipart.go

@@ -224,7 +224,7 @@ func (fs *FSObjects) NewMultipartUpload(ctx context.Context, bucket, object stri
 	uploadID := mustGetUUID()
 	uploadIDDir := fs.getUploadIDDir(bucket, object, uploadID)
 
-	err := mkdirAll(uploadIDDir, 0755)
+	err := mkdirAll(uploadIDDir, 0o755)
 	if err != nil {
 		logger.LogIf(ctx, err)
 		return "", err
@@ -240,7 +240,7 @@ func (fs *FSObjects) NewMultipartUpload(ctx context.Context, bucket, object stri
 		return "", err
 	}
 
-	if err = ioutil.WriteFile(pathJoin(uploadIDDir, fs.metaJSONFile), fsMetaBytes, 0666); err != nil {
+	if err = ioutil.WriteFile(pathJoin(uploadIDDir, fs.metaJSONFile), fsMetaBytes, 0o666); err != nil {
 		logger.LogIf(ctx, err)
 		return "", err
 	}
@@ -252,8 +252,8 @@ func (fs *FSObjects) NewMultipartUpload(ctx context.Context, bucket, object stri
 // object. Internally incoming data is written to '.minio.sys/tmp' location
 // and safely renamed to '.minio.sys/multipart' for reach parts.
 func (fs *FSObjects) CopyObjectPart(ctx context.Context, srcBucket, srcObject, dstBucket, dstObject, uploadID string, partID int,
-	startOffset int64, length int64, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (pi PartInfo, e error) {
-
+	startOffset int64, length int64, srcInfo ObjectInfo, srcOpts, dstOpts ObjectOptions) (pi PartInfo, e error,
+) {
 	if srcOpts.VersionID != "" && srcOpts.VersionID != nullVersionID {
 		return pi, VersionNotFound{
 			Bucket:    srcBucket,
@@ -397,7 +397,7 @@ func (fs *FSObjects) GetMultipartInfo(ctx context.Context, bucket, object, uploa
 	}
 
 	var fsMeta fsMetaV1
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err = json.Unmarshal(fsMetaBytes, &fsMeta); err != nil {
 		return minfo, toObjectErr(err, bucket, object)
 	}
@@ -526,7 +526,7 @@ func (fs *FSObjects) ListObjectParts(ctx context.Context, bucket, object, upload
 	}
 
 	var fsMeta fsMetaV1
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	if err = json.Unmarshal(fsMetaBytes, &fsMeta); err != nil {
 		return result, err
 	}
@@ -542,7 +542,6 @@ func (fs *FSObjects) ListObjectParts(ctx context.Context, bucket, object, upload
 //
 // Implements S3 compatible Complete multipart API.
 func (fs *FSObjects) CompleteMultipartUpload(ctx context.Context, bucket string, object string, uploadID string, parts []CompletePart, opts ObjectOptions) (oi ObjectInfo, e error) {
-
 	var actualSize int64
 
 	if err := checkCompleteMultipartArgs(ctx, bucket, object, fs); err != nil {

cmd/fs-v1-rwpool.go

@@ -148,7 +148,7 @@ func (fsi *fsIOPool) Write(path string) (wlk *lock.LockedFile, err error) {
 		return nil, err
 	}
 
-	wlk, err = lock.LockedOpenFile(path, os.O_RDWR, 0666)
+	wlk, err = lock.LockedOpenFile(path, os.O_RDWR, 0o666)
 	if err != nil {
 		switch {
 		case osIsNotExist(err):
@@ -175,12 +175,12 @@ func (fsi *fsIOPool) Create(path string) (wlk *lock.LockedFile, err error) {
 	}
 
 	// Creates parent if missing.
-	if err = mkdirAll(pathutil.Dir(path), 0777); err != nil {
+	if err = mkdirAll(pathutil.Dir(path), 0o777); err != nil {
 		return nil, err
 	}
 
 	// Attempt to create the file.
-	wlk, err = lock.LockedOpenFile(path, os.O_RDWR|os.O_CREATE, 0666)
+	wlk, err = lock.LockedOpenFile(path, os.O_RDWR|os.O_CREATE, 0o666)
 	if err != nil {
 		switch {
 		case osIsPermission(err):
@@ -220,7 +220,6 @@ func (fsi *fsIOPool) Close(path string) error {
 
 	// If the file is closed, remove it from the reader pool map.
 	if rlkFile.IsClosed() {
-
 		// Purge the cached lock path from map.
 		delete(fsi.readersMap, path)
 	}

cmd/fs-v1-rwpool_test.go

@@ -110,5 +110,4 @@ func TestRWPool(t *testing.T) {
 			t.Fatal("Unexpected error", err)
 		}
 	}
-
 }

cmd/fs-v1.go

@@ -97,22 +97,21 @@ func initMetaVolumeFS(fsPath, fsUUID string) error {
 	// if it doesn't exist yet.
 	metaBucketPath := pathJoin(fsPath, minioMetaBucket)
 
-	if err := os.MkdirAll(metaBucketPath, 0777); err != nil {
+	if err := os.MkdirAll(metaBucketPath, 0o777); err != nil {
 		return err
 	}
 
 	metaTmpPath := pathJoin(fsPath, minioMetaTmpBucket, fsUUID)
-	if err := os.MkdirAll(metaTmpPath, 0777); err != nil {
+	if err := os.MkdirAll(metaTmpPath, 0o777); err != nil {
 		return err
 	}
 
-	if err := os.MkdirAll(pathJoin(fsPath, dataUsageBucket), 0777); err != nil {
+	if err := os.MkdirAll(pathJoin(fsPath, dataUsageBucket), 0o777); err != nil {
 		return err
 	}
 
 	metaMultipartPath := pathJoin(fsPath, minioMetaMultipartBucket)
-	return os.MkdirAll(metaMultipartPath, 0777)
-
+	return os.MkdirAll(metaMultipartPath, 0o777)
 }
 
 // NewFSObjectLayer - initialize new fs object layer.
@@ -366,7 +365,7 @@ func (fs *FSObjects) scanBucket(ctx context.Context, bucket string, cache dataUs
 		fsMeta := newFSMetaV1()
 		metaOk := false
 		if len(fsMetaBytes) > 0 {
-			var json = jsoniter.ConfigCompatibleWithStandardLibrary
+			json := jsoniter.ConfigCompatibleWithStandardLibrary
 			if err = json.Unmarshal(fsMetaBytes, &fsMeta); err == nil {
 				metaOk = true
 			}
@@ -474,7 +473,7 @@ func (fs *FSObjects) SetBucketPolicy(ctx context.Context, bucket string, p *poli
 		return err
 	}
 
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	configData, err := json.Marshal(p)
 	if err != nil {
 		return err
@@ -542,7 +541,7 @@ func (fs *FSObjects) ListBuckets(ctx context.Context) ([]BucketInfo, error) {
 			// Ignore any errors returned here.
 			continue
 		}
-		var created = fi.ModTime()
+		created := fi.ModTime()
 		meta, err := globalBucketMetadataSys.Get(fi.Name())
 		if err == nil {
 			created = meta.Created
@@ -705,7 +704,7 @@ func (fs *FSObjects) GetObjectNInfo(ctx context.Context, bucket, object string,
 		return nil, toObjectErr(err, bucket)
 	}
 
-	var nsUnlocker = func() {}
+	nsUnlocker := func() {}
 
 	if lockType != noLock {
 		// Lock the object before reading.
@@ -843,7 +842,7 @@ func (fs *FSObjects) getObjectInfoNoFSLock(ctx context.Context, bucket, object s
 		fsMetaBuf, rerr := ioutil.ReadAll(rc)
 		rc.Close()
 		if rerr == nil {
-			var json = jsoniter.ConfigCompatibleWithStandardLibrary
+			json := jsoniter.ConfigCompatibleWithStandardLibrary
 			if rerr = json.Unmarshal(fsMetaBuf, &fsMeta); rerr != nil {
 				// For any error to read fsMeta, set default ETag and proceed.
 				fsMeta = fs.defaultFsJSON(object)
@@ -1029,7 +1028,7 @@ func (fs *FSObjects) putObject(ctx context.Context, bucket string, object string
 	// with a slash separator, we treat it like a valid operation
 	// and return success.
 	if isObjectDir(object, data.Size()) {
-		if err = mkdirAll(pathJoin(fs.fsPath, bucket, object), 0777); err != nil {
+		if err = mkdirAll(pathJoin(fs.fsPath, bucket, object), 0o777); err != nil {
 			logger.LogIf(ctx, err)
 			return ObjectInfo{}, toObjectErr(err, bucket, object)
 		}

cmd/fs-v1_test.go

@@ -205,7 +205,6 @@ func TestFSDeleteObject(t *testing.T) {
 			t.Fatal("Unexpected error: ", err)
 		}
 	}
-
 }
 
 // TestFSDeleteBucket - tests for fs DeleteBucket
@@ -263,7 +262,7 @@ func TestFSListBuckets(t *testing.T) {
 	}
 
 	// Create a bucket with invalid name
-	if err := os.MkdirAll(pathJoin(fs.fsPath, "vo^"), 0777); err != nil {
+	if err := os.MkdirAll(pathJoin(fs.fsPath, "vo^"), 0o777); err != nil {
 		t.Fatal("Unexpected error: ", err)
 	}
 	f, err := os.Create(pathJoin(fs.fsPath, "test"))

cmd/gateway-common.go

@@ -130,7 +130,6 @@ func FromMinioClientListMultipartsInfo(lmur minio.ListMultipartUploadsResult) Li
 		CommonPrefixes:     commonPrefixes,
 		EncodingType:       lmur.EncodingType,
 	}
-
 }
 
 // FromMinioClientObjectInfo converts minio ObjectInfo to gateway ObjectInfo

cmd/gateway-main.go

@@ -37,14 +37,12 @@ import (
 	"github.com/minio/pkg/env"
 )
 
-var (
-	gatewayCmd = cli.Command{
-		Name:            "gateway",
-		Usage:           "start object storage gateway",
-		Flags:           append(ServerFlags, GlobalFlags...),
-		HideHelpCommand: true,
-	}
-)
+var gatewayCmd = cli.Command{
+	Name:            "gateway",
+	Usage:           "start object storage gateway",
+	Flags:           append(ServerFlags, GlobalFlags...),
+	HideHelpCommand: true,
+}
 
 // GatewayLocker implements custom NewNSLock implementation
 type GatewayLocker struct {

cmd/gateway/azure/gateway-azure.go

@@ -349,7 +349,6 @@ func azureTierToS3StorageClass(tierType string) string {
 	default:
 		return "STANDARD"
 	}
-
 }
 
 // azurePropertiesToS3Meta converts Azure metadata/properties to S3
@@ -578,7 +577,6 @@ func (a *azureObjects) GetBucketInfo(ctx context.Context, bucket string) (bi min
 		resp, err := a.client.ListContainersSegment(ctx, marker, azblob.ListContainersSegmentOptions{
 			Prefix: bucket,
 		})
-
 		if err != nil {
 			return bi, azureToObjectError(err, bucket)
 		}
@@ -604,7 +602,6 @@ func (a *azureObjects) ListBuckets(ctx context.Context) (buckets []minio.BucketI
 
 	for marker.NotDone() {
 		resp, err := a.client.ListContainersSegment(ctx, marker, azblob.ListContainersSegmentOptions{})
-
 		if err != nil {
 			return nil, azureToObjectError(err)
 		}

cmd/gateway/azure/gateway-azure_test.go

@@ -192,34 +192,41 @@ func TestAzureCodesToObjectError(t *testing.T) {
 	}{
 		{
 			nil, "ContainerAlreadyExists", 0,
-			minio.BucketExists{Bucket: "bucket"}, "bucket", "",
+			minio.BucketExists{Bucket: "bucket"},
+			"bucket", "",
 		},
 		{
 			nil, "InvalidResourceName", 0,
-			minio.BucketNameInvalid{Bucket: "bucket."}, "bucket.", "",
+			minio.BucketNameInvalid{Bucket: "bucket."},
+			"bucket.", "",
 		},
 		{
 			nil, "RequestBodyTooLarge", 0,
-			minio.PartTooBig{}, "", "",
+			minio.PartTooBig{},
+			"", "",
 		},
 		{
 			nil, "InvalidMetadata", 0,
-			minio.UnsupportedMetadata{}, "", "",
+			minio.UnsupportedMetadata{},
+			"", "",
 		},
 		{
 			nil, "", http.StatusNotFound,
 			minio.ObjectNotFound{
 				Bucket: "bucket",
 				Object: "object",
-			}, "bucket", "object",
+			},
+			"bucket", "object",
 		},
 		{
 			nil, "", http.StatusNotFound,
-			minio.BucketNotFound{Bucket: "bucket"}, "bucket", "",
+			minio.BucketNotFound{Bucket: "bucket"},
+			"bucket", "",
 		},
 		{
 			nil, "", http.StatusBadRequest,
-			minio.BucketNameInvalid{Bucket: "bucket."}, "bucket.", "",
+			minio.BucketNameInvalid{Bucket: "bucket."},
+			"bucket.", "",
 		},
 		{
 			fmt.Errorf("unhandled azure error"), "", http.StatusForbidden,

cmd/gateway/gcs/gateway-gcs.go

@@ -1121,7 +1121,6 @@ func (l *gcsGateway) PutObjectPart(ctx context.Context, bucket string, key strin
 		LastModified: minio.UTCNow(),
 		Size:         data.Size(),
 	}, nil
-
 }
 
 // gcsGetPartInfo returns PartInfo of a given object part

cmd/gateway/gcs/gateway-gcs_test.go

@@ -72,7 +72,6 @@ func TestToGCSPageToken(t *testing.T) {
 			t.Errorf("Test %d: Expected %s, got %s", i+1, toGCSPageToken(testCase.Name), testCase.Token)
 		}
 	}
-
 }
 
 // TestIsValidGCSProjectIDFormat tests isValidGCSProjectIDFormat
@@ -166,7 +165,6 @@ func TestGCSMultipartDataName(t *testing.T) {
 }
 
 func TestFromMinioClientListBucketResultToV2Info(t *testing.T) {
-
 	listBucketResult := miniogo.ListBucketResult{
 		IsTruncated:    false,
 		Marker:         "testMarker",

cmd/gateway/hdfs/gateway-hdfs.go

@@ -133,7 +133,6 @@ func getKerberosClient() (*krb.Client, error) {
 		realm := env.Get("KRB5REALM", "")
 		if username == "" || realm == "" {
 			return nil, errors.New("empty KRB5USERNAME or KRB5REALM")
-
 		}
 
 		return krb.NewWithKeytab(username, realm, kt, cfg), nil
@@ -216,7 +215,7 @@ func (g *HDFS) NewGatewayLayer(creds madmin.Credentials) (minio.ObjectLayer, err
 		return nil, fmt.Errorf("unable to initialize hdfsClient: %v", err)
 	}
 
-	if err = clnt.MkdirAll(minio.PathJoin(commonPath, hdfsSeparator, minioMetaTmpBucket), os.FileMode(0755)); err != nil {
+	if err = clnt.MkdirAll(minio.PathJoin(commonPath, hdfsSeparator, minioMetaTmpBucket), os.FileMode(0o755)); err != nil {
 		return nil, err
 	}
 
@@ -324,7 +323,7 @@ func (n *hdfsObjects) MakeBucketWithLocation(ctx context.Context, bucket string,
 	if !hdfsIsValidBucketName(bucket) {
 		return minio.BucketNameInvalid{Bucket: bucket}
 	}
-	return hdfsToObjectErr(ctx, n.clnt.Mkdir(n.hdfsPathJoin(bucket), os.FileMode(0755)), bucket)
+	return hdfsToObjectErr(ctx, n.clnt.Mkdir(n.hdfsPathJoin(bucket), os.FileMode(0o755)), bucket)
 }
 
 func (n *hdfsObjects) GetBucketInfo(ctx context.Context, bucket string) (bi minio.BucketInfo, err error) {
@@ -480,7 +479,6 @@ func fileInfoToObjectInfo(bucket string, entry string, fi os.FileInfo) minio.Obj
 // a path entry to an `os.FileInfo`. It also saves the listed path's `os.FileInfo` in the cache.
 func (n *hdfsObjects) populateDirectoryListing(filePath string, fileInfos map[string]os.FileInfo) (os.FileInfo, error) {
 	dirReader, err := n.clnt.Open(filePath)
-
 	if err != nil {
 		return nil, err
 	}
@@ -494,7 +492,6 @@ func (n *hdfsObjects) populateDirectoryListing(filePath string, fileInfos map[st
 
 	fileInfos[key] = dirStat
 	infos, err := dirReader.Readdir(0)
-
 	if err != nil {
 		return nil, err
 	}
@@ -602,7 +599,6 @@ func (n *hdfsObjects) GetObjectNInfo(ctx context.Context, bucket, object string,
 	// exit in case of partial read
 	pipeCloser := func() { pr.Close() }
 	return minio.NewGetObjectReaderFromReader(pr, objInfo, opts, pipeCloser)
-
 }
 
 func (n *hdfsObjects) CopyObject(ctx context.Context, srcBucket, srcObject, dstBucket, dstObject string, srcInfo minio.ObjectInfo, srcOpts, dstOpts minio.ObjectOptions) (minio.ObjectInfo, error) {
@@ -689,7 +685,7 @@ func (n *hdfsObjects) PutObject(ctx context.Context, bucket string, object strin
 
 	// If its a directory create a prefix {
 	if strings.HasSuffix(object, hdfsSeparator) && r.Size() == 0 {
-		if err = n.clnt.MkdirAll(name, os.FileMode(0755)); err != nil {
+		if err = n.clnt.MkdirAll(name, os.FileMode(0o755)); err != nil {
 			n.deleteObject(n.hdfsPathJoin(bucket), name)
 			return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
 		}
@@ -707,7 +703,7 @@ func (n *hdfsObjects) PutObject(ctx context.Context, bucket string, object strin
 		}
 		dir := path.Dir(name)
 		if dir != "" {
-			if err = n.clnt.MkdirAll(dir, os.FileMode(0755)); err != nil {
+			if err = n.clnt.MkdirAll(dir, os.FileMode(0o755)); err != nil {
 				w.Close()
 				n.deleteObject(n.hdfsPathJoin(bucket), dir)
 				return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
@@ -839,7 +835,7 @@ func (n *hdfsObjects) CompleteMultipartUpload(ctx context.Context, bucket, objec
 	name := n.hdfsPathJoin(bucket, object)
 	dir := path.Dir(name)
 	if dir != "" {
-		if err = n.clnt.MkdirAll(dir, os.FileMode(0755)); err != nil {
+		if err = n.clnt.MkdirAll(dir, os.FileMode(0o755)); err != nil {
 			return objInfo, hdfsToObjectErr(ctx, err, bucket, object)
 		}
 	}

cmd/gateway/s3/gateway-s3-chain.go

@@ -89,7 +89,6 @@ func (c *Chain) Retrieve() (credentials.Value, error) {
 	}
 
 	return credentials.Value{}, fmt.Errorf("no credentials found in %s cannot proceed", providers)
-
 }
 
 // IsExpired will returned the expired state of the currently cached provider

cmd/gateway/s3/gateway-s3-metadata.go

@@ -139,7 +139,7 @@ func (m gwMetaV1) ObjectToPartOffset(ctx context.Context, offset int64) (partInd
 
 // Constructs GWMetaV1 using `jsoniter` lib to retrieve each field.
 func gwMetaUnmarshalJSON(ctx context.Context, gwMetaBuf []byte) (gwMeta gwMetaV1, err error) {
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	err = json.Unmarshal(gwMetaBuf, &gwMeta)
 	return gwMeta, err
 }

cmd/gateway/s3/gateway-s3-sse.go

@@ -75,12 +75,10 @@ func (l *s3EncObjects) ListObjects(ctx context.Context, bucket string, prefix st
 	loi.Objects = res.Objects
 	loi.Prefixes = res.Prefixes
 	return loi, nil
-
 }
 
 // ListObjectsV2 lists all blobs in S3 bucket filtered by prefix
 func (l *s3EncObjects) ListObjectsV2(ctx context.Context, bucket, prefix, continuationToken, delimiter string, maxKeys int, fetchOwner bool, startAfter string) (loi minio.ListObjectsV2Info, e error) {
-
 	var objects []minio.ObjectInfo
 	var prefixes []string
 	var isTruncated bool
@@ -423,7 +421,6 @@ func (l *s3EncObjects) DeleteObjects(ctx context.Context, bucket string, objects
 
 // ListMultipartUploads lists all multipart uploads.
 func (l *s3EncObjects) ListMultipartUploads(ctx context.Context, bucket string, prefix string, keyMarker string, uploadIDMarker string, delimiter string, maxUploads int) (lmi minio.ListMultipartsInfo, e error) {
-
 	lmi, e = l.s3Objects.ListMultipartUploads(ctx, bucket, prefix, keyMarker, uploadIDMarker, delimiter, maxUploads)
 	if e != nil {
 		return
@@ -505,7 +502,6 @@ func (l *s3EncObjects) PutObject(ctx context.Context, bucket string, object stri
 
 // PutObjectPart puts a part of object in bucket
 func (l *s3EncObjects) PutObjectPart(ctx context.Context, bucket string, object string, uploadID string, partID int, data *minio.PutObjReader, opts minio.ObjectOptions) (pi minio.PartInfo, e error) {
-
 	if opts.ServerSideEncryption == nil {
 		return l.s3Objects.PutObjectPart(ctx, bucket, object, uploadID, partID, data, opts)
 	}
@@ -630,7 +626,6 @@ func (l *s3EncObjects) AbortMultipartUpload(ctx context.Context, bucket string,
 
 // CompleteMultipartUpload completes ongoing multipart upload and finalizes object
 func (l *s3EncObjects) CompleteMultipartUpload(ctx context.Context, bucket, object, uploadID string, uploadedParts []minio.CompletePart, opts minio.ObjectOptions) (oi minio.ObjectInfo, e error) {
-
 	tmpMeta, err := l.getGWMetadata(ctx, bucket, getTmpDareMetaPath(object, uploadID))
 	if err != nil {
 		oi, e = l.s3Objects.CompleteMultipartUpload(ctx, bucket, object, uploadID, uploadedParts, opts)

cmd/global-heal.go

@@ -89,7 +89,7 @@ func getBackgroundHealStatus(ctx context.Context, o ObjectLayer) (madmin.BgHealS
 		}
 	}
 
-	var healDisksMap = map[string]struct{}{}
+	healDisksMap := map[string]struct{}{}
 	for _, ep := range getLocalDisksToHeal() {
 		healDisksMap[ep.String()] = struct{}{}
 	}
@@ -139,7 +139,6 @@ func getBackgroundHealStatus(ctx context.Context, o ObjectLayer) (madmin.BgHealS
 	status.SCParity[storageclass.RRS] = backendInfo.RRSCParity
 
 	return status, true
-
 }
 
 func mustGetHealSequence(ctx context.Context) *healSequence {
@@ -306,7 +305,6 @@ func (er *erasureObjects) healErasureSet(ctx context.Context, buckets []string,
 			},
 			finished: nil,
 		})
-
 		if err != nil {
 			// Set this such that when we return this function
 			// we let the caller retry this disk again for the

cmd/handler-api.go

@@ -77,7 +77,6 @@ func availableMemory() (available uint64) {
 		if available != 9223372036854771712 {
 			// This means cgroup memory limit is configured.
 			return
-
 		} // no-limit set proceed to set the limits based on virtual memory.
 
 	} // for all other platforms limits are based on virtual memory.

cmd/handler-utils.go

@@ -307,7 +307,7 @@ func extractPostPolicyFormValues(ctx context.Context, form *multipart.Form) (fil
 	// an ugly way of handling this situation. Refer here
 	// https://golang.org/src/mime/multipart/formdata.go#L61
 	if len(form.File) == 0 {
-		var b = &bytes.Buffer{}
+		b := &bytes.Buffer{}
 		for _, v := range formValues["File"] {
 			b.WriteString(v)
 		}
@@ -544,7 +544,6 @@ func errorResponseHandler(w http.ResponseWriter, r *http.Request) {
 			HTTPStatusCode: http.StatusBadRequest,
 		}, r.URL)
 	}
-
 }
 
 // gets host name for current node

cmd/healthcheck-router.go

@@ -34,7 +34,6 @@ const (
 
 // registerHealthCheckRouter - add handler functions for liveness and readiness routes.
 func registerHealthCheckRouter(router *mux.Router) {
-
 	// Healthcheck router
 	healthRouter := router.PathPrefix(healthCheckPathPrefix).Subrouter()
 

cmd/http-stats.go

@@ -128,7 +128,7 @@ func (stats *HTTPAPIStats) Dec(api string) {
 func (stats *HTTPAPIStats) Load() map[string]int {
 	stats.Lock()
 	defer stats.Unlock()
-	var apiStats = make(map[string]int, len(stats.apiStats))
+	apiStats := make(map[string]int, len(stats.apiStats))
 	for k, v := range stats.apiStats {
 		apiStats[k] = v
 	}

cmd/http-tracer_test.go

@@ -28,13 +28,16 @@ func TestRedactLDAPPwd(t *testing.T) {
 		expectedQuery string
 	}{
 		{"", ""},
-		{"?Action=AssumeRoleWithLDAPIdentity&LDAPUsername=myusername&LDAPPassword=can+youreadthis%3F&Version=2011-06-15",
+		{
+			"?Action=AssumeRoleWithLDAPIdentity&LDAPUsername=myusername&LDAPPassword=can+youreadthis%3F&Version=2011-06-15",
 			"?Action=AssumeRoleWithLDAPIdentity&LDAPUsername=myusername&LDAPPassword=*REDACTED*&Version=2011-06-15",
 		},
-		{"LDAPPassword=can+youreadthis%3F&Version=2011-06-15&?Action=AssumeRoleWithLDAPIdentity&LDAPUsername=myusername",
+		{
+			"LDAPPassword=can+youreadthis%3F&Version=2011-06-15&?Action=AssumeRoleWithLDAPIdentity&LDAPUsername=myusername",
 			"LDAPPassword=*REDACTED*&Version=2011-06-15&?Action=AssumeRoleWithLDAPIdentity&LDAPUsername=myusername",
 		},
-		{"?Action=AssumeRoleWithLDAPIdentity&LDAPUsername=myusername&Version=2011-06-15&LDAPPassword=can+youreadthis%3F",
+		{
+			"?Action=AssumeRoleWithLDAPIdentity&LDAPUsername=myusername&Version=2011-06-15&LDAPPassword=can+youreadthis%3F",
 			"?Action=AssumeRoleWithLDAPIdentity&LDAPUsername=myusername&Version=2011-06-15&LDAPPassword=*REDACTED*",
 		},
 		{

cmd/iam-etcd-store.go

@@ -139,7 +139,7 @@ func getIAMConfig(item interface{}, data []byte, itemPath string) error {
 	if err != nil {
 		return err
 	}
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.Unmarshal(data, item)
 }
 
@@ -416,7 +416,6 @@ func (ies *IAMEtcdStore) loadGroup(ctx context.Context, group string, m map[stri
 	}
 	m[group] = gi
 	return nil
-
 }
 
 func (ies *IAMEtcdStore) loadGroups(ctx context.Context, m map[string]GroupInfo) error {
@@ -437,7 +436,6 @@ func (ies *IAMEtcdStore) loadGroups(ctx context.Context, m map[string]GroupInfo)
 		}
 	}
 	return nil
-
 }
 
 func (ies *IAMEtcdStore) loadMappedPolicy(ctx context.Context, name string, userType IAMUserType, isGroup bool, m map[string]MappedPolicy) error {
@@ -497,7 +495,6 @@ func (ies *IAMEtcdStore) loadMappedPolicies(ctx context.Context, userType IAMUse
 		}
 	}
 	return nil
-
 }
 
 func (ies *IAMEtcdStore) savePolicyDoc(ctx context.Context, policyName string, p PolicyDoc) error {
@@ -601,5 +598,4 @@ func (ies *IAMEtcdStore) watch(ctx context.Context, keyPath string) <-chan iamWa
 		}
 	}()
 	return ch
-
 }

cmd/iam-object-store.go

@@ -128,7 +128,7 @@ func (iamOS *IAMObjectStore) migrateUsersConfigToV1(ctx context.Context) error {
 	next:
 		// 4. check if user identity has old format.
 		identityPath := pathJoin(basePrefix, user, iamIdentityFile)
-		var cred = auth.Credentials{
+		cred := auth.Credentials{
 			AccessKey: user,
 		}
 		if err := iamOS.loadIAMConfig(ctx, &cred, identityPath); err != nil {
@@ -159,7 +159,6 @@ func (iamOS *IAMObjectStore) migrateUsersConfigToV1(ctx context.Context) error {
 		// has not changed.
 	}
 	return nil
-
 }
 
 func (iamOS *IAMObjectStore) migrateToV1(ctx context.Context) error {
@@ -201,7 +200,7 @@ func (iamOS *IAMObjectStore) migrateBackendFormat(ctx context.Context) error {
 }
 
 func (iamOS *IAMObjectStore) saveIAMConfig(ctx context.Context, item interface{}, objPath string, opts ...options) error {
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	data, err := json.Marshal(item)
 	if err != nil {
 		return err
@@ -238,7 +237,7 @@ func (iamOS *IAMObjectStore) loadIAMConfig(ctx context.Context, item interface{}
 	if err != nil {
 		return err
 	}
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	return json.Unmarshal(data, item)
 }
 
@@ -364,8 +363,8 @@ func (iamOS *IAMObjectStore) loadGroups(ctx context.Context, m map[string]GroupI
 }
 
 func (iamOS *IAMObjectStore) loadMappedPolicy(ctx context.Context, name string, userType IAMUserType, isGroup bool,
-	m map[string]MappedPolicy) error {
-
+	m map[string]MappedPolicy,
+) error {
 	var p MappedPolicy
 	err := iamOS.loadIAMConfig(ctx, &p, getMappedPolicyPath(name, userType, isGroup))
 	if err != nil {

cmd/iam-store.go

@@ -213,7 +213,7 @@ func (d *PolicyDoc) update(p iampolicy.Policy) {
 // from iampolicy.Policy to PolicyDoc. To avoid a migration, loading supports
 // both the old and the new formats.
 func (d *PolicyDoc) parseJSON(data []byte) error {
-	var json = jsoniter.ConfigCompatibleWithStandardLibrary
+	json := jsoniter.ConfigCompatibleWithStandardLibrary
 	var doc PolicyDoc
 	err := json.Unmarshal(data, &doc)
 	if err != nil {
@@ -378,7 +378,6 @@ func (c *iamCache) policyDBGet(mode UsersSysType, name string, isGroup bool) ([]
 
 // IAMStorageAPI defines an interface for the IAM persistence layer
 type IAMStorageAPI interface {
-
 	// The role of the read-write lock is to prevent go routines from
 	// concurrently reading and writing the IAM storage. The (r)lock()
 	// functions return the iamCache. The cache can be safely written to
@@ -387,32 +386,23 @@ type IAMStorageAPI interface {
 	unlock()
 	rlock() *iamCache
 	runlock()
-
 	migrateBackendFormat(context.Context) error
-
 	getUsersSysType() UsersSysType
-
 	loadPolicyDoc(ctx context.Context, policy string, m map[string]PolicyDoc) error
 	loadPolicyDocs(ctx context.Context, m map[string]PolicyDoc) error
-
 	loadUser(ctx context.Context, user string, userType IAMUserType, m map[string]auth.Credentials) error
 	loadUsers(ctx context.Context, userType IAMUserType, m map[string]auth.Credentials) error
-
 	loadGroup(ctx context.Context, group string, m map[string]GroupInfo) error
 	loadGroups(ctx context.Context, m map[string]GroupInfo) error
-
 	loadMappedPolicy(ctx context.Context, name string, userType IAMUserType, isGroup bool, m map[string]MappedPolicy) error
 	loadMappedPolicies(ctx context.Context, userType IAMUserType, isGroup bool, m map[string]MappedPolicy) error
-
 	saveIAMConfig(ctx context.Context, item interface{}, path string, opts ...options) error
 	loadIAMConfig(ctx context.Context, item interface{}, path string) error
 	deleteIAMConfig(ctx context.Context, path string) error
-
 	savePolicyDoc(ctx context.Context, policyName string, p PolicyDoc) error
 	saveMappedPolicy(ctx context.Context, name string, userType IAMUserType, isGroup bool, mp MappedPolicy, opts ...options) error
 	saveUserIdentity(ctx context.Context, name string, userType IAMUserType, u UserIdentity, opts ...options) error
 	saveGroupInfo(ctx context.Context, group string, gi GroupInfo) error
-
 	deletePolicyDoc(ctx context.Context, policyName string) error
 	deleteMappedPolicy(ctx context.Context, name string, userType IAMUserType, isGroup bool) error
 	deleteUserIdentity(ctx context.Context, name string, userType IAMUserType) error
@@ -639,7 +629,6 @@ func (store *IAMStoreSys) AddUsersToGroup(ctx context.Context, group string, mem
 	}
 
 	return nil
-
 }
 
 // helper function - does not take any locks. Updates only cache if
@@ -880,7 +869,6 @@ func (store *IAMStoreSys) PolicyDBSet(ctx context.Context, name, policy string,
 		cache.iamGroupPolicyMap[name] = mp
 	}
 	return nil
-
 }
 
 // PolicyNotificationHandler - loads given policy from storage. If not present,
@@ -1034,7 +1022,6 @@ func (store *IAMStoreSys) GetPolicyDoc(name string) (r PolicyDoc, err error) {
 
 // SetPolicy - creates a policy with name.
 func (store *IAMStoreSys) SetPolicy(ctx context.Context, name string, policy iampolicy.Policy) error {
-
 	if policy.IsEmpty() || name == "" {
 		return errInvalidArgument
 	}
@@ -1058,7 +1045,6 @@ func (store *IAMStoreSys) SetPolicy(ctx context.Context, name string, policy iam
 
 	cache.iamPolicyDocsMap[name] = d
 	return nil
-
 }
 
 // ListPolicies - fetches all policies from storage and updates cache as well.
@@ -1118,7 +1104,6 @@ func (store *IAMStoreSys) FilterPolicies(policyName string, bucketName string) (
 	defer store.runlock()
 
 	return filterPolicies(cache, policyName, bucketName)
-
 }
 
 // GetBucketUsers - returns users (not STS or service accounts) that have access

cmd/iam.go

@@ -170,7 +170,6 @@ func (sys *IAMSys) initStore(objAPI ObjectLayer, etcdClient *etcd.Client) {
 	} else {
 		sys.store = &IAMStoreSys{newIAMEtcdStore(etcdClient, sys.usersSysType)}
 	}
-
 }
 
 // Initialized checks if IAM is initialized
@@ -801,9 +800,7 @@ func (sys *IAMSys) NewServiceAccount(ctx context.Context, parentUser string, gro
 		}
 	}
 
-	var (
-		cred auth.Credentials
-	)
+	var cred auth.Credentials
 
 	var err error
 	if len(opts.accessKey) > 0 {

cmd/local-locker.go

@@ -140,7 +140,6 @@ func (l *localLocker) Unlock(_ context.Context, args dsync.LockArgs) (reply bool
 		}
 	}
 	return
-
 }
 
 // removeEntry based on the uid of the lock message, removes a single entry from the

cmd/metacache-entries_test.go

@@ -228,7 +228,7 @@ func Test_metaCacheEntries_resolve(t *testing.T) {
 	if err != nil {
 		t.Fatal(err)
 	}
-	var inputs = []xlMetaV2{
+	inputs := []xlMetaV2{
 		0: {
 			versions: []xlMetaV2ShallowVersion{
 				{header: xlMetaV2VersionHeader{
@@ -379,7 +379,7 @@ func Test_metaCacheEntries_resolve(t *testing.T) {
 	for i, xl := range inputs {
 		xl.sortByModTime()
 		var err error
-		var entry = metaCacheEntry{
+		entry := metaCacheEntry{
 			name: "testobject",
 		}
 		entry.metadata, err = xl.AppendTo(nil)