server: Move all the top level files into cmd folder. (#2490)

This change brings a change which was done for the 'mc'
package to allow for clean repo and have a cleaner
github drop in experience.

Makefile

@@ -71,19 +71,19 @@ verifiers: vet fmt lint cyclo spelling
 
 vet:
 	@echo "Running $@:"
-	@GO15VENDOREXPERIMENT=1 go tool vet -all *.go
+	@GO15VENDOREXPERIMENT=1 go tool vet -all ./cmd
 	@GO15VENDOREXPERIMENT=1 go tool vet -all ./pkg
-	@GO15VENDOREXPERIMENT=1 go tool vet -shadow=true *.go
+	@GO15VENDOREXPERIMENT=1 go tool vet -shadow=true ./cmd
 	@GO15VENDOREXPERIMENT=1 go tool vet -shadow=true ./pkg
 
 fmt:
 	@echo "Running $@:"
-	@GO15VENDOREXPERIMENT=1 gofmt -s -l *.go
+	@GO15VENDOREXPERIMENT=1 gofmt -s -l cmd
 	@GO15VENDOREXPERIMENT=1 gofmt -s -l pkg
 
 lint:
 	@echo "Running $@:"
-	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/golint *.go
+	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/golint github.com/minio/minio/cmd...
 	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/golint github.com/minio/minio/pkg...
 
 ineffassign:
@@ -92,7 +92,7 @@ ineffassign:
 
 cyclo:
 	@echo "Running $@:"
-	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/gocyclo -over 65 *.go
+	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/gocyclo -over 65 cmd
 	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/gocyclo -over 65 pkg
 
 build: getdeps verifiers $(UI_ASSETS)
@@ -101,12 +101,12 @@ deadcode:
 	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/deadcode
 
 spelling:
-	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/misspell -error *.go
+	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/misspell -error cmd/**/*
 	@GO15VENDOREXPERIMENT=1 ${GOPATH}/bin/misspell -error pkg/**/*
 
 test: build
 	@echo "Running all minio testing:"
-	@GO15VENDOREXPERIMENT=1 go test $(GOFLAGS) .
+	@GO15VENDOREXPERIMENT=1 go test $(GOFLAGS) github.com/minio/minio/cmd...
 	@GO15VENDOREXPERIMENT=1 go test $(GOFLAGS) github.com/minio/minio/pkg...
 
 coverage: build
@@ -139,8 +139,6 @@ experimental: verifiers
 
 clean:
 	@echo "Cleaning up all the generated files:"
-	@rm -fv minio minio.test cover.out
 	@find . -name '*.test' | xargs rm -fv
-	@rm -rf isa-l
 	@rm -rf build
 	@rm -rf release

appveyor.yml

@@ -22,7 +22,7 @@ install:
 
 # to run your custom scripts instead of automatic MSBuild
 build_script:
-  - go test -race .
+  - go test -race github.com/minio/minio/cmd...
   - go test -race github.com/minio/minio/pkg...
   - go test -coverprofile=coverage.txt -covermode=atomic
   - go run buildscripts/gen-ldflags.go > temp.txt

buildscripts/gen-ldflags.go

@@ -28,11 +28,11 @@ import (
 
 func genLDFlags(version string) string {
 	var ldflagsStr string
-	ldflagsStr = "-X main.minioVersion=" + version
+	ldflagsStr = "-X github.com/minio/minio/cmd.Version=" + version
-	ldflagsStr += " -X main.minioReleaseTag=" + releaseTag(version)
+	ldflagsStr += " -X github.com/minio/minio/cmd.ReleaseTag=" + releaseTag(version)
-	ldflagsStr += " -X main.minioCommitID=" + commitID()
+	ldflagsStr += " -X github.com/minio/minio/cmd.CommitID=" + commitID()
-	ldflagsStr += " -X main.minioShortCommitID=" + commitID()[:12]
+	ldflagsStr += " -X github.com/minio/minio/cmd.ShortCommitID=" + commitID()[:12]
-	ldflagsStr += " -X main.minioGOPATH=" + os.Getenv("GOPATH")
+	ldflagsStr += " -X github.com/minio/minio/cmd.GOPATH=" + os.Getenv("GOPATH")
 	return ldflagsStr
 }
 

cmd/access-key.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"crypto/rand"

cmd/api-datatypes.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/xml"

cmd/api-errors.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/xml"

cmd/api-headers.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"
@@ -44,7 +44,7 @@ func generateRequestID() []byte {
 func setCommonHeaders(w http.ResponseWriter) {
 	// Set unique request ID for each reply.
 	w.Header().Set("X-Amz-Request-Id", string(generateRequestID()))
-	w.Header().Set("Server", ("Minio/" + minioReleaseTag + " (" + runtime.GOOS + "; " + runtime.GOARCH + ")"))
+	w.Header().Set("Server", ("Minio/" + ReleaseTag + " (" + runtime.GOOS + "; " + runtime.GOARCH + ")"))
 	w.Header().Set("Accept-Ranges", "bytes")
 }
 

cmd/api-headers_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"testing"

cmd/api-resources.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"net/url"

cmd/api-response-multipart.go

@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-// File carries any specific responses constructed/necessary in
+// Package cmd file carries any specific responses constructed/necessary in
 // multipart operations.
-package main
+package cmd
 
 import "net/http"
 

cmd/api-response.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/xml"

cmd/api-router.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import router "github.com/gorilla/mux"
 

cmd/auth-handler.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/auth-handler_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/benchmark-utils_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/bucket-handlers-listobjects.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"net/http"

cmd/bucket-handlers.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/xml"

cmd/bucket-notification-datatypes.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/xml"

cmd/bucket-notification-handlers.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/bucket-notification-handlers_test.go

@@ -1,4 +1,4 @@
-package main
+package cmd
 
 import (
 	"bytes"

cmd/bucket-notification-utils.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "strings"
 

cmd/bucket-notification-utils_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "testing"
 

cmd/bucket-policy-handlers.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/bucket-policy-handlers_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/bucket-policy-migrate.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/bucket-policy-parser.go

@@ -14,9 +14,9 @@
  * limitations under the License.
  */
 
-// This file implements AWS Access Policy Language parser in
+// Package cmd This file implements AWS Access Policy Language parser in
 // accordance with http://docs.aws.amazon.com/AmazonS3/latest/dev/access-policy-language-overview.html
-package main
+package cmd
 
 import (
 	"encoding/json"

cmd/bucket-policy-parser_test.go

@@ -13,7 +13,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-package main
+package cmd
 
 import (
 	"bytes"

cmd/bucket-policy.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/build-constants.go

@@ -1,5 +1,5 @@
 /*
- * Minio Cloud Storage, (C) 2015 Minio, Inc.
+ * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -14,20 +14,20 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 // DO NOT EDIT THIS FILE DIRECTLY. These are build-time constants
 // set through ‘buildscripts/gen-ldflags.go’.
 var (
-	// minioGOPATH - GOPATH value at the time of build.
+	// GOPATH - GOPATH value at the time of build.
-	minioGOPATH = ""
+	GOPATH = ""
 
-	// minioVersion - version time.RFC3339.
+	// Version - version time.RFC3339.
-	minioVersion = "DEVELOPMENT.GOGET"
+	Version = "DEVELOPMENT.GOGET"
-	// minioReleaseTag - release tag in TAG.%Y-%m-%dT%H-%M-%SZ.
+	// ReleaseTag - release tag in TAG.%Y-%m-%dT%H-%M-%SZ.
-	minioReleaseTag = "DEVELOPMENT.GOGET"
+	ReleaseTag = "DEVELOPMENT.GOGET"
-	// minioCommitID - latest commit id.
+	// CommitID - latest commit id.
-	minioCommitID = "DEVELOPMENT.GOGET"
+	CommitID = "DEVELOPMENT.GOGET"
-	// minioShortCommitID - first 12 characters from minioCommitID.
+	// ShortCommitID - first 12 characters from CommitID.
-	minioShortCommitID = minioCommitID[:12]
+	ShortCommitID = CommitID[:12]
 )

cmd/certs.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"os"

cmd/certs_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"os"

cmd/checkport.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"fmt"

cmd/checkport_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"fmt"

cmd/commands.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "github.com/minio/cli"
 

cmd/config-migrate.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"errors"

cmd/config-old.go

@@ -1,4 +1,4 @@
-package main
+package cmd
 
 import (
 	"os"

cmd/config-v6.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"os"

cmd/config.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"os"

cmd/control-main.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"fmt"

cmd/crossdomain-xml-handler.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "net/http"
 

cmd/damerau-levenshtein.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"math"

cmd/damerau-levenshtein_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"math"

cmd/erasure-createfile.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/hex"

cmd/erasure-createfile_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/erasure-healfile.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "encoding/hex"
 

cmd/erasure-healfile_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/erasure-readfile.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/hex"

cmd/erasure-readfile_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/erasure-utils.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/erasure-utils_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/erasure_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/event-notifier.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/event-notifier_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "testing"
 

cmd/faulty-disk_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 // Simulates disk returning errFaultyDisk on all methods of StorageAPI
 // interface after successCount number of successes.

cmd/format-config-v1.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/json"

cmd/format-config-v1_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/fs-createfile.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "io"
 

cmd/fs-v1-errors.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "errors"
 

cmd/fs-v1-metadata.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/json"
@@ -98,7 +98,7 @@ func newFSMetaV1() (fsMeta fsMetaV1) {
 	fsMeta = fsMetaV1{}
 	fsMeta.Version = "1.0.0"
 	fsMeta.Format = "fs"
-	fsMeta.Minio.Release = minioReleaseTag
+	fsMeta.Minio.Release = ReleaseTag
 	return fsMeta
 }
 

cmd/fs-v1-metadata_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"os"

cmd/fs-v1-multipart-common.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/json"

cmd/fs-v1-multipart.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"crypto/md5"

cmd/fs-v1.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"crypto/md5"

cmd/fs-v1_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"os"

cmd/generic-handlers.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"net/http"

cmd/globals.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"github.com/fatih/color"

cmd/handler-utils.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"io"

cmd/handler-utils_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/host-to-ip.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"net"

cmd/host-to-ip_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "testing"
 

cmd/httprange.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"fmt"

cmd/httprange_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "testing"
 

cmd/leak-detect_test.go

@@ -5,7 +5,7 @@
 // Package leaktest provides tools to detect leaked goroutines in tests.
 // To use it, call "defer leaktest.AfterTest(t)()" at the beginning of each
 // test that may use goroutines.
-package main
+package cmd
 
 import (
 	"runtime"

cmd/logger-console-hook.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"io/ioutil"

cmd/logger-file-hook.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"fmt"

cmd/logger-syslog-hook_nix.go

@@ -16,7 +16,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"fmt"

cmd/logger-syslog-hook_windows.go

@@ -16,7 +16,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 type syslogLogger struct {
 	Enable bool   `json:"enable"`

cmd/logger.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bufio"
@@ -56,7 +56,7 @@ func stackInfo() string {
 	stackBuf.ReadFrom(rawStack)
 
 	// Strip GOPATH of the build system and return.
-	return strings.Replace(stackBuf.String(), minioGOPATH+"/src/", "", -1)
+	return strings.Replace(stackBuf.String(), GOPATH+"/src/", "", -1)
 }
 
 // errorIf synonymous with fatalIf but doesn't exit on error != nil

cmd/logger_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/main.go

@@ -0,0 +1,193 @@
+/*
+ * Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"sort"
+
+	"github.com/minio/cli"
+	"github.com/minio/mc/pkg/console"
+	"github.com/pkg/profile"
+)
+
+var (
+	// global flags for minio.
+	minioFlags = []cli.Flag{
+		cli.BoolFlag{
+			Name:  "help, h",
+			Usage: "Show help.",
+		},
+	}
+)
+
+// Help template for minio.
+var minioHelpTemplate = `NAME:
+  {{.Name}} - {{.Usage}}
+
+DESCRIPTION:
+  {{.Description}}
+
+USAGE:
+  minio {{if .Flags}}[flags] {{end}}command{{if .Flags}}{{end}} [arguments...]
+
+COMMANDS:
+  {{range .Commands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}}
+  {{end}}{{if .Flags}}
+FLAGS:
+  {{range .Flags}}{{.}}
+  {{end}}{{end}}
+VERSION:
+  ` + Version +
+	`{{ "\n"}}`
+
+// init - check the environment before main starts
+func init() {
+	// Check if minio was compiled using a supported version of Golang.
+	checkGoVersion()
+
+	// Set global trace flag.
+	globalTrace = os.Getenv("MINIO_TRACE") == "1"
+}
+
+func migrate() {
+	// Migrate config file
+	migrateConfig()
+
+	// Migrate other configs here.
+}
+
+func enableLoggers() {
+	// Enable all loggers here.
+	enableConsoleLogger()
+	enableFileLogger()
+	// Add your logger here.
+}
+
+func findClosestCommands(command string) []string {
+	var closestCommands []string
+	for _, value := range commandsTree.PrefixMatch(command) {
+		closestCommands = append(closestCommands, value.(string))
+	}
+	sort.Strings(closestCommands)
+	// Suggest other close commands - allow missed, wrongly added and
+	// even transposed characters
+	for _, value := range commandsTree.walk(commandsTree.root) {
+		if sort.SearchStrings(closestCommands, value.(string)) < len(closestCommands) {
+			continue
+		}
+		// 2 is arbitrary and represents the max
+		// allowed number of typed errors
+		if DamerauLevenshteinDistance(command, value.(string)) < 2 {
+			closestCommands = append(closestCommands, value.(string))
+		}
+	}
+	return closestCommands
+}
+
+func registerApp() *cli.App {
+	// Register all commands.
+	registerCommand(serverCmd)
+	registerCommand(versionCmd)
+	registerCommand(updateCmd)
+	registerCommand(controlCmd)
+
+	// Set up app.
+	app := cli.NewApp()
+	app.Name = "Minio"
+	app.Author = "Minio.io"
+	app.Usage = "Cloud Storage Server."
+	app.Description = `Minio is an Amazon S3 compatible object storage server. Use it to store photos, videos, VMs, containers, log files, or any blob of data as objects.`
+	app.Flags = append(minioFlags, globalFlags...)
+	app.Commands = commands
+	app.CustomAppHelpTemplate = minioHelpTemplate
+	app.CommandNotFound = func(ctx *cli.Context, command string) {
+		msg := fmt.Sprintf("‘%s’ is not a minio sub-command. See ‘minio --help’.", command)
+		closestCommands := findClosestCommands(command)
+		if len(closestCommands) > 0 {
+			msg += fmt.Sprintf("\n\nDid you mean one of these?\n")
+			for _, cmd := range closestCommands {
+				msg += fmt.Sprintf("        ‘%s’\n", cmd)
+			}
+		}
+		console.Fatalln(msg)
+	}
+	return app
+}
+
+func checkMainSyntax(c *cli.Context) {
+	configPath, err := getConfigPath()
+	if err != nil {
+		console.Fatalf("Unable to obtain user's home directory. \nError: %s\n", err)
+	}
+	if configPath == "" {
+		console.Fatalln("Config folder cannot be empty, please specify --config-dir <foldername>.")
+	}
+}
+
+// Main - main for minio server.
+func Main() {
+	app := registerApp()
+	app.Before = func(c *cli.Context) error {
+		// Sets new config folder.
+		setGlobalConfigPath(c.GlobalString("config-dir"))
+
+		// Valid input arguments to main.
+		checkMainSyntax(c)
+
+		// Migrate any old version of config / state files to newer format.
+		migrate()
+
+		// Initialize config.
+		err := initConfig()
+		fatalIf(err, "Unable to initialize minio config.")
+
+		// Enable all loggers by now.
+		enableLoggers()
+
+		// Set global quiet flag.
+		globalQuiet = c.Bool("quiet") || c.GlobalBool("quiet")
+
+		// Do not print update messages, if quiet flag is set.
+		if !globalQuiet {
+			// Do not print any errors in release update function.
+			noError := true
+			updateMsg := getReleaseUpdate(minioUpdateStableURL, noError)
+			if updateMsg.Update {
+				console.Println(updateMsg)
+			}
+		}
+
+		return nil
+	}
+
+	// Set ``MINIO_PROFILE_DIR`` to the directory where profiling information should be persisted
+	profileDir := os.Getenv("MINIO_PROFILE_DIR")
+	// Enable profiler if ``MINIO_PROFILER`` is set. Supported options are [cpu, mem, block].
+	switch os.Getenv("MINIO_PROFILER") {
+	case "cpu":
+		defer profile.Start(profile.CPUProfile, profile.ProfilePath(profileDir)).Stop()
+	case "mem":
+		defer profile.Start(profile.MemProfile, profile.ProfilePath(profileDir)).Stop()
+	case "block":
+		defer profile.Start(profile.BlockProfile, profile.ProfilePath(profileDir)).Stop()
+	}
+
+	// Run the app - exit on error.
+	app.RunAndExitOnError()
+}

cmd/main_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"testing"

cmd/namespace-lock.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"errors"

cmd/namespace-lock_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "testing"
 

cmd/notifiers.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"errors"

cmd/notifiers_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "testing"
 

cmd/notify-amqp.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"io/ioutil"

cmd/notify-elasticsearch.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"errors"

cmd/notify-redis.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"io/ioutil"

cmd/object-api-getobject_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/object-api-getobjectinfo_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/object-api-listobjects_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/object-api-multipart_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/object-api-putobject_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/object-common.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"path/filepath"

cmd/object-datatypes.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "time"
 

cmd/object-errors.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"errors"

cmd/object-handlers-common.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"net/http"

cmd/object-handlers.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"encoding/hex"

cmd/object-handlers_test.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import (
 	"bytes"

cmd/object-interface.go

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package main
+package cmd
 
 import "io"