Add logger command - also migrate from old config to newer config

api-signature.go

@@ -105,17 +105,17 @@ func initSignatureV4(req *http.Request) (*fs.Signature, *probe.Error) {
 	if err != nil {
 		return nil, err.Trace()
 	}
-	authConfig, err := loadAuthConfig()
+	config, err := loadConfigV2()
 	if err != nil {
 		return nil, err.Trace()
 	}
 	authFields := strings.Split(strings.TrimSpace(authHeaderValue), ",")
 	signedHeaders := strings.Split(strings.Split(strings.TrimSpace(authFields[1]), "=")[1], ";")
 	signature := strings.Split(strings.TrimSpace(authFields[2]), "=")[1]
-	if authConfig.AccessKeyID == accessKeyID {
+	if config.Credentials.AccessKeyID == accessKeyID {
 		signature := &fs.Signature{
-			AccessKeyID:     authConfig.AccessKeyID,
-			SecretAccessKey: authConfig.SecretAccessKey,
+			AccessKeyID:     config.Credentials.AccessKeyID,
+			SecretAccessKey: config.Credentials.SecretAccessKey,
 			Signature:       signature,
 			SignedHeaders:   signedHeaders,
 			Request:         req,
@@ -210,14 +210,14 @@ func initPostPresignedPolicyV4(formValues map[string]string) (*fs.Signature, *pr
 	if !isValidAccessKey(accessKeyID) {
 		return nil, probe.NewError(errAccessKeyIDInvalid)
 	}
-	authConfig, perr := loadAuthConfig()
+	config, perr := loadConfigV2()
 	if perr != nil {
 		return nil, perr.Trace()
 	}
-	if authConfig.AccessKeyID == accessKeyID {
+	if config.Credentials.AccessKeyID == accessKeyID {
 		signature := &fs.Signature{
-			AccessKeyID:     authConfig.AccessKeyID,
-			SecretAccessKey: authConfig.SecretAccessKey,
+			AccessKeyID:     config.Credentials.AccessKeyID,
+			SecretAccessKey: config.Credentials.SecretAccessKey,
 			Signature:       formValues["X-Amz-Signature"],
 			PresignedPolicy: formValues["Policy"],
 		}
@@ -236,16 +236,16 @@ func initPresignedSignatureV4(req *http.Request) (*fs.Signature, *probe.Error) {
 	if !isValidAccessKey(accessKeyID) {
 		return nil, probe.NewError(errAccessKeyIDInvalid)
 	}
-	authConfig, err := loadAuthConfig()
+	config, err := loadConfigV2()
 	if err != nil {
 		return nil, err.Trace()
 	}
 	signedHeaders := strings.Split(strings.TrimSpace(req.URL.Query().Get("X-Amz-SignedHeaders")), ";")
 	signature := strings.TrimSpace(req.URL.Query().Get("X-Amz-Signature"))
-	if authConfig.AccessKeyID == accessKeyID {
+	if config.Credentials.AccessKeyID == accessKeyID {
 		signature := &fs.Signature{
-			AccessKeyID:     authConfig.AccessKeyID,
-			SecretAccessKey: authConfig.SecretAccessKey,
+			AccessKeyID:     config.Credentials.AccessKeyID,
+			SecretAccessKey: config.Credentials.SecretAccessKey,
 			Signature:       signature,
 			SignedHeaders:   signedHeaders,
 			Presigned:       true,

auth-config.go

@@ -1,127 +0,0 @@
-/*
- * Minio Cloud Storage, (C) 2015 Minio, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package main
-
-import (
-	"os"
-	"os/user"
-	"path/filepath"
-
-	"github.com/minio/minio-xl/pkg/probe"
-	"github.com/minio/minio-xl/pkg/quick"
-)
-
-// AuthConfig auth keys
-type AuthConfig struct {
-	Version         string `json:"version"`
-	AccessKeyID     string `json:"accessKeyId"`
-	SecretAccessKey string `json:"secretAccessKey"`
-}
-
-// getAuthConfigPath get users config path
-func getAuthConfigPath() (string, *probe.Error) {
-	if customConfigPath != "" {
-		return customConfigPath, nil
-	}
-	u, err := user.Current()
-	if err != nil {
-		return "", probe.NewError(err)
-	}
-	authConfigPath := filepath.Join(u.HomeDir, ".minio")
-	return authConfigPath, nil
-}
-
-// createAuthConfigPath create users config path
-func createAuthConfigPath() *probe.Error {
-	authConfigPath, err := getAuthConfigPath()
-	if err != nil {
-		return err.Trace()
-	}
-	if err := os.MkdirAll(authConfigPath, 0700); err != nil {
-		return probe.NewError(err)
-	}
-	return nil
-}
-
-// isAuthConfigFileExists is auth config file exists?
-func isAuthConfigFileExists() bool {
-	if _, err := os.Stat(mustGetAuthConfigFile()); err != nil {
-		if os.IsNotExist(err) {
-			return false
-		}
-		panic(err)
-	}
-	return true
-}
-
-// mustGetAuthConfigFile always get users config file, if not panic
-func mustGetAuthConfigFile() string {
-	authConfigFile, err := getAuthConfigFile()
-	if err != nil {
-		panic(err)
-	}
-	return authConfigFile
-}
-
-// getAuthConfigFile get users config file
-func getAuthConfigFile() (string, *probe.Error) {
-	authConfigPath, err := getAuthConfigPath()
-	if err != nil {
-		return "", err.Trace()
-	}
-	return filepath.Join(authConfigPath, "fsUsers.json"), nil
-}
-
-// customConfigPath for custom config path only for testing purposes
-var customConfigPath string
-
-// saveAuthConfig save auth config
-func saveAuthConfig(a *AuthConfig) *probe.Error {
-	authConfigFile, err := getAuthConfigFile()
-	if err != nil {
-		return err.Trace()
-	}
-	qc, err := quick.New(a)
-	if err != nil {
-		return err.Trace()
-	}
-	if err := qc.Save(authConfigFile); err != nil {
-		return err.Trace()
-	}
-	return nil
-}
-
-// loadAuthConfig load auth config
-func loadAuthConfig() (*AuthConfig, *probe.Error) {
-	authConfigFile, err := getAuthConfigFile()
-	if err != nil {
-		return nil, err.Trace()
-	}
-	if _, err := os.Stat(authConfigFile); err != nil {
-		return nil, probe.NewError(err)
-	}
-	a := &AuthConfig{}
-	a.Version = "1"
-	qc, err := quick.New(a)
-	if err != nil {
-		return nil, err.Trace()
-	}
-	if err := qc.Load(authConfigFile); err != nil {
-		return nil, err.Trace()
-	}
-	return qc.Data().(*AuthConfig), nil
-}

config-logger-main.go

@@ -0,0 +1,78 @@
+/*
+ * Minio Cloud Storage, (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import "github.com/minio/cli"
+
+// Configure logger
+var configLoggerCmd = cli.Command{
+	Name:   "logger",
+	Usage:  "Configure logger.",
+	Action: mainConfigLogger,
+	CustomHelpTemplate: `NAME:
+   minio config {{.Name}} - {{.Usage}}
+
+USAGE:
+   minio config {{.Name}}
+
+`,
+}
+
+func mainConfigLogger(ctx *cli.Context) {
+	if !ctx.Args().Present() || ctx.Args().First() == "help" {
+		cli.ShowCommandHelpAndExit(ctx, "logger", 1) // last argument is exit code
+	}
+	if ctx.Args().Get(0) == "mongo" {
+		enableLog2Mongo(ctx.Args().Tail())
+	}
+	if ctx.Args().Get(0) == "syslog" {
+		enableLog2Syslog(ctx.Args().Tail())
+	}
+	if ctx.Args().Get(0) == "file" {
+		enableLog2File(ctx.Args().Tail())
+	}
+}
+
+func enableLog2Mongo(args cli.Args) {
+	config, err := loadConfigV2()
+	fatalIf(err.Trace(), "Unable to load config", nil)
+
+	config.MongoLogger.Addr = args.Get(0)
+	config.MongoLogger.DB = args.Get(1)
+	config.MongoLogger.Collection = args.Get(2)
+
+	err = saveConfig(config)
+	fatalIf(err.Trace(), "Unable to save config.", nil)
+}
+
+func enableLog2Syslog(args cli.Args) {
+	config, err := loadConfigV2()
+	fatalIf(err.Trace(), "Unable to load config.", nil)
+
+	config.SyslogLogger.Addr = args.Get(0)
+	config.SyslogLogger.Network = args.Get(1)
+	err = saveConfig(config)
+	fatalIf(err.Trace(), "Unable to save config.", nil)
+}
+
+func enableLog2File(args cli.Args) {
+	config, err := loadConfigV2()
+	fatalIf(err.Trace(), "Unable to load config.", nil)
+	config.FileLogger.Filename = args.Get(0)
+	err = saveConfig(config)
+	fatalIf(err.Trace(), "Unable to save config.", nil)
+}

config-main.go

@@ -0,0 +1,53 @@
+/*
+ * Minio Cloud Storage, (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import "github.com/minio/cli"
+
+//   Configure minio server
+//
+//   ----
+//   NOTE: that the configure command only writes values to the config file.
+//   It does not use any configuration values from the environment variables.
+//   ----
+//
+var configCmd = cli.Command{
+	Name:   "config",
+	Usage:  "Collection of config management commands.",
+	Action: mainConfig,
+	Subcommands: []cli.Command{
+		configLoggerCmd,
+		configVersionCmd,
+	},
+	CustomHelpTemplate: `NAME:
+  {{.Name}} - {{.Usage}}
+
+USAGE:
+  {{.Name}} {{if .Flags}}[global flags] {{end}}command{{if .Flags}} [command flags]{{end}} [arguments...]
+
+COMMANDS:
+  {{range .Commands}}{{ .Name }}{{ "\t" }}{{.Usage}}
+  {{end}}
+`,
+}
+
+// mainConfig is the handle for "minio config" command. provides sub-commands which write configuration data in json format to config file.
+func mainConfig(ctx *cli.Context) {
+	if !ctx.Args().Present() || ctx.Args().First() == "help" {
+		cli.ShowAppHelp(ctx)
+	}
+}

config-version-main.go

@@ -0,0 +1,64 @@
+/*
+ * Minio Cloud Storage, (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"encoding/json"
+
+	"github.com/minio/cli"
+	"github.com/minio/minio-xl/pkg/probe"
+)
+
+// Print config version.
+var configVersionCmd = cli.Command{
+	Name:   "version",
+	Usage:  "Print config version.",
+	Action: mainConfigVersion,
+	CustomHelpTemplate: `NAME:
+   minio config {{.Name}} - {{.Usage}}
+
+USAGE:
+   minio config {{.Name}}
+
+`,
+}
+
+func mainConfigVersion(ctx *cli.Context) {
+	if ctx.Args().First() == "help" {
+		cli.ShowCommandHelpAndExit(ctx, "version", 1) // last argument is exit code
+	}
+
+	config, err := loadConfigV2()
+	fatalIf(err.Trace(), "Unable to load config", nil)
+
+	// convert interface{} back to its original struct
+	newConf := config
+	type Version struct {
+		Value string `json:"value"`
+	}
+	if globalJSONFlag {
+		tB, e := json.Marshal(
+			struct {
+				Version Version `json:"version"`
+			}{Version: Version{newConf.Version}},
+		)
+		fatalIf(probe.NewError(e), "Unable to construct version string.", nil)
+		Println(string(tB))
+		return
+	}
+	Println(newConf.Version)
+}

flags.go

@@ -28,6 +28,12 @@ var (
 		Usage: "ADDRESS:PORT for cloud storage access.",
 	}
 
+	loggerFlag = cli.StringFlag{
+		Name:  "logger",
+		Value: "none",
+		Usage: "Choose type of logging. Available options are [‘file’, ‘mongo’, ‘syslog’]",
+	}
+
 	accessLogFlag = cli.BoolFlag{
 		Name:  "enable-accesslog",
 		Hide:  true,

logger-file-hook.go

@@ -0,0 +1,54 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/Sirupsen/logrus"
+	"github.com/minio/minio-xl/pkg/probe"
+)
+
+type localFile struct {
+	*os.File
+}
+
+func log2File(filename string) *probe.Error {
+	fileHook, e := newFile(filename)
+	if e != nil {
+		return probe.NewError(e)
+	}
+	log.Hooks.Add(fileHook)                 // Add a local file hook.
+	log.Formatter = &logrus.JSONFormatter{} // JSON formatted log.
+	log.Level = logrus.InfoLevel            // Minimum log level.
+	return nil
+}
+
+func newFile(filename string) (*localFile, error) {
+	file, err := os.OpenFile(filename, os.O_CREATE|os.O_APPEND|os.O_WRONLY, 0600)
+	if err != nil {
+		return nil, err
+	}
+	return &localFile{file}, nil
+}
+
+func (l *localFile) Fire(entry *logrus.Entry) error {
+	line, err := entry.String()
+	if err != nil {
+		return fmt.Errorf("Unable to read entry, %v", err)
+	}
+	l.File.Write([]byte(line + "\n"))
+	l.File.Sync()
+	return nil
+}
+
+// Levels -
+func (l *localFile) Levels() []logrus.Level {
+	return []logrus.Level{
+		logrus.PanicLevel,
+		logrus.FatalLevel,
+		logrus.ErrorLevel,
+		logrus.WarnLevel,
+		logrus.InfoLevel,
+		logrus.DebugLevel,
+	}
+}

logger-syslog-hook.go

@@ -33,8 +33,8 @@ type syslogHook struct {
 	syslogRaddr   string
 }
 
-func log2Syslog(network, raddr string, priority syslog.Priority, tag string) *probe.Error {
-	syslogHook, e := newSyslog(network, raddr, priority, tag)
+func log2Syslog(network, raddr string) *probe.Error {
+	syslogHook, e := newSyslog(network, raddr, syslog.LOG_ERR, "MINIO")
 	if e != nil {
 		return probe.NewError(e)
 	}
@@ -44,9 +44,7 @@ func log2Syslog(network, raddr string, priority syslog.Priority, tag string) *pr
 	return nil
 }
 
-// newSyslog - Creates a hook to be added to an instance of logger. This is called with
-// `hook, err := NewSyslogHook("udp", "localhost:514", syslog.LOG_DEBUG, "")`
-// `if err == nil { log.Hooks.Add(hook) }`
+// newSyslog - Creates a hook to be added to an instance of logger.
 func newSyslog(network, raddr string, priority syslog.Priority, tag string) (*syslogHook, error) {
 	w, err := syslog.Dial(network, raddr, priority, tag)
 	return &syslogHook{w, network, raddr}, err

main.go

@@ -22,33 +22,11 @@ import (
 	"os/user"
 	"runtime"
 	"strconv"
-	"time"
 
 	"github.com/dustin/go-humanize"
 	"github.com/minio/cli"
 )
 
-// serverConfig - http server config
-type serverConfig struct {
-	/// HTTP server options
-	Address   string // Address:Port listening
-	AccessLog bool   // Enable access log handler
-	Anonymous bool   // No signature turn off
-
-	/// FS options
-	Path        string        // Path to export for cloud storage
-	MinFreeDisk int64         // Minimum free disk space for filesystem
-	Expiry      time.Duration // Set auto expiry for filesystem
-
-	// TLS service
-	TLS      bool   // TLS on when certs are specified
-	CertFile string // Domain certificate
-	KeyFile  string // Domain key
-
-	/// Advanced HTTP server options
-	RateLimit int // Ratelimited server of incoming connections
-}
-
 func init() {
 	// Check for the environment early on and gracefuly report.
 	_, err := user.Current()
@@ -64,6 +42,11 @@ func init() {
 	checkGolangRuntimeVersion()
 }
 
+func migrate() {
+	// Migrate config file
+	migrateConfig()
+}
+
 // Tries to get os/arch/platform specific information
 // Returns a map of current os/arch/platform/memstats
 func getSystemData() map[string]string {
@@ -101,6 +84,7 @@ func findClosestCommands(command string) []string {
 func registerApp() *cli.App {
 	// register all commands
 	registerCommand(serverCmd)
+	registerCommand(configCmd)
 	registerCommand(versionCmd)
 	registerCommand(updateCmd)
 
@@ -166,6 +150,7 @@ func main() {
 	app := registerApp()
 	app.Before = func(c *cli.Context) error {
 		globalJSONFlag = c.GlobalBool("json")
+		migrate()
 		return nil
 	}
 	app.ExtraInfo = func() map[string]string {

routers.go

@@ -54,7 +54,7 @@ func registerCloudStorageAPI(mux *router.Router, a CloudStorageAPI) {
 }
 
 // getNewCloudStorageAPI instantiate a new CloudStorageAPI
-func getNewCloudStorageAPI(conf serverConfig) CloudStorageAPI {
+func getNewCloudStorageAPI(conf cloudServerConfig) CloudStorageAPI {
 	fs, err := fs.New()
 	fatalIf(err.Trace(), "Instantiating filesystem failed.", nil)
 

server-config.go

@@ -0,0 +1,218 @@
+/*
+ * Minio Cloud Storage, (C) 2015 Minio, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package main
+
+import (
+	"errors"
+	"os"
+	"os/user"
+	"path/filepath"
+
+	"github.com/minio/minio-xl/pkg/probe"
+	"github.com/minio/minio-xl/pkg/quick"
+)
+
+// configV1
+type configV1 struct {
+	Version         string `json:"version"`
+	AccessKeyID     string `json:"accessKeyId"`
+	SecretAccessKey string `json:"secretAccessKey"`
+}
+
+// configV2
+type configV2 struct {
+	Version     string `json:"version"`
+	Credentials struct {
+		AccessKeyID     string `json:"accessKeyId"`
+		SecretAccessKey string `json:"secretAccessKey"`
+	} `json:"credentials"`
+	MongoLogger struct {
+		Addr       string `json:"addr"`
+		DB         string `json:"db"`
+		Collection string `json:"collection"`
+	} `json:"mongoLogger"`
+	SyslogLogger struct {
+		Network string `json:"network"`
+		Addr    string `json:"addr"`
+	} `json:"syslogLogger"`
+	FileLogger struct {
+		Filename string `json:"filename"`
+	} `json:"fileLogger"`
+}
+
+// getConfigPath get users config path
+func getConfigPath() (string, *probe.Error) {
+	if customConfigPath != "" {
+		return customConfigPath, nil
+	}
+	u, err := user.Current()
+	if err != nil {
+		return "", probe.NewError(err)
+	}
+	configPath := filepath.Join(u.HomeDir, ".minio")
+	return configPath, nil
+}
+
+// createConfigPath create users config path
+func createConfigPath() *probe.Error {
+	configPath, err := getConfigPath()
+	if err != nil {
+		return err.Trace()
+	}
+	if err := os.MkdirAll(configPath, 0700); err != nil {
+		return probe.NewError(err)
+	}
+	return nil
+}
+
+// isAuthConfigFileExists is auth config file exists?
+func isConfigFileExists() bool {
+	if _, err := os.Stat(mustGetConfigFile()); err != nil {
+		if os.IsNotExist(err) {
+			return false
+		}
+		panic(err)
+	}
+	return true
+}
+
+// mustGetConfigFile always get users config file, if not panic
+func mustGetConfigFile() string {
+	configFile, err := getConfigFile()
+	if err != nil {
+		panic(err)
+	}
+	return configFile
+}
+
+// getConfigFile get users config file
+func getConfigFile() (string, *probe.Error) {
+	configPath, err := getConfigPath()
+	if err != nil {
+		return "", err.Trace()
+	}
+	return filepath.Join(configPath, "config.json"), nil
+}
+
+// configPath for custom config path only for testing purposes
+var customConfigPath string
+
+// saveConfig save config
+func saveConfig(a *configV2) *probe.Error {
+	configFile, err := getConfigFile()
+	if err != nil {
+		return err.Trace()
+	}
+	qc, err := quick.New(a)
+	if err != nil {
+		return err.Trace()
+	}
+	if err := qc.Save(configFile); err != nil {
+		return err.Trace()
+	}
+	return nil
+}
+
+// loadConfigV2 load config
+func loadConfigV2() (*configV2, *probe.Error) {
+	configFile, err := getConfigFile()
+	if err != nil {
+		return nil, err.Trace()
+	}
+	if _, err := os.Stat(configFile); err != nil {
+		return nil, probe.NewError(err)
+	}
+	a := &configV2{}
+	a.Version = "2"
+	qc, err := quick.New(a)
+	if err != nil {
+		return nil, err.Trace()
+	}
+	if err := qc.Load(configFile); err != nil {
+		return nil, err.Trace()
+	}
+	return qc.Data().(*configV2), nil
+}
+
+// loadConfigV1 load config
+func loadConfigV1() (*configV1, *probe.Error) {
+	configPath, err := getConfigPath()
+	if err != nil {
+		return nil, err.Trace()
+	}
+	configFile := filepath.Join(configPath, "fsUsers.json")
+	if _, err := os.Stat(configFile); err != nil {
+		return nil, probe.NewError(err)
+	}
+	a := &configV1{}
+	a.Version = "1"
+	qc, err := quick.New(a)
+	if err != nil {
+		return nil, err.Trace()
+	}
+	if err := qc.Load(configFile); err != nil {
+		return nil, err.Trace()
+	}
+	return qc.Data().(*configV1), nil
+}
+
+func newConfigV2() *configV2 {
+	config := &configV2{}
+	config.Version = "2"
+	config.Credentials.AccessKeyID = ""
+	config.Credentials.SecretAccessKey = ""
+	config.MongoLogger.Addr = ""
+	config.MongoLogger.DB = ""
+	config.MongoLogger.Collection = ""
+	config.SyslogLogger.Network = ""
+	config.SyslogLogger.Addr = ""
+	config.FileLogger.Filename = ""
+	return config
+}
+
+func migrateConfig() {
+	migrateV1ToV2()
+}
+
+func migrateV1ToV2() {
+	cv1, err := loadConfigV1()
+	if err != nil {
+		if os.IsNotExist(err.ToGoError()) {
+			return
+		}
+	}
+	fatalIf(err.Trace(), "Unable to load config version ‘1’.", nil)
+
+	if cv1.Version != "1" {
+		fatalIf(probe.NewError(errors.New("")), "Invalid version loaded ‘"+cv1.Version+"’.", nil)
+	}
+
+	cv2 := newConfigV2()
+	cv2.Credentials.AccessKeyID = cv1.AccessKeyID
+	cv2.Credentials.SecretAccessKey = cv1.SecretAccessKey
+	err = saveConfig(cv2)
+	fatalIf(err.Trace(), "Unable to save config version ‘2’.", nil)
+
+	Println("Migration from version ‘1’ to ‘2’ completed successfully.")
+
+	/// Purge old fsUsers.json file
+	configPath, err := getConfigPath()
+	fatalIf(err.Trace(), "Unable to retrieve config path.", nil)
+
+	configFile := filepath.Join(configPath, "fsUsers.json")
+	os.RemoveAll(configFile)
+}

server-main.go

@@ -63,8 +63,29 @@ EXAMPLES:
 `,
 }
 
+// cloudServerConfig - http server config
+type cloudServerConfig struct {
+	/// HTTP server options
+	Address   string // Address:Port listening
+	AccessLog bool   // Enable access log handler
+	Anonymous bool   // No signature turn off
+
+	/// FS options
+	Path        string        // Path to export for cloud storage
+	MinFreeDisk int64         // Minimum free disk space for filesystem
+	Expiry      time.Duration // Set auto expiry for filesystem
+
+	// TLS service
+	TLS      bool   // TLS on when certs are specified
+	CertFile string // Domain certificate
+	KeyFile  string // Domain key
+
+	/// Advanced HTTP server options
+	RateLimit int // Ratelimited server of incoming connections
+}
+
 // configureAPIServer configure a new server instance
-func configureAPIServer(conf serverConfig) (*http.Server, *probe.Error) {
+func configureAPIServer(conf cloudServerConfig) (*http.Server, *probe.Error) {
 	// Minio server config
 	apiServer := &http.Server{
 		Addr:           conf.Address,
@@ -118,7 +139,7 @@ func configureAPIServer(conf serverConfig) (*http.Server, *probe.Error) {
 }
 
 // startServer starts an s3 compatible cloud storage server
-func startServer(conf serverConfig) *probe.Error {
+func startServer(conf cloudServerConfig) *probe.Error {
 	apiServer, err := configureAPIServer(conf)
 	if err != nil {
 		return err.Trace()
@@ -148,19 +169,19 @@ func parsePercentToInt(s string, bitSize int) (int64, *probe.Error) {
 	return p, nil
 }
 
-func getAuth() (*AuthConfig, *probe.Error) {
-	if err := createAuthConfigPath(); err != nil {
+func getAuth() (*configV2, *probe.Error) {
+	if err := createConfigPath(); err != nil {
 		return nil, err.Trace()
 	}
-	config, err := loadAuthConfig()
+	config, err := loadConfigV2()
 	if err != nil {
 		if os.IsNotExist(err.ToGoError()) {
 			// Initialize new config, since config file doesn't exist yet
-			config := &AuthConfig{}
-			config.Version = "1"
-			config.AccessKeyID = string(mustGenerateAccessKeyID())
-			config.SecretAccessKey = string(mustGenerateSecretAccessKey())
-			if err := saveAuthConfig(config); err != nil {
+			config := &configV2{}
+			config.Version = "2"
+			config.Credentials.AccessKeyID = string(mustGenerateAccessKeyID())
+			config.Credentials.SecretAccessKey = string(mustGenerateSecretAccessKey())
+			if err := saveConfig(config); err != nil {
 				return nil, err.Trace()
 			}
 			return config, nil
@@ -171,13 +192,13 @@ func getAuth() (*AuthConfig, *probe.Error) {
 }
 
 type accessKeys struct {
-	*AuthConfig
+	*configV2
 }
 
 func (a accessKeys) String() string {
 	magenta := color.New(color.FgMagenta, color.Bold).SprintFunc()
 	white := color.New(color.FgWhite, color.Bold).SprintfFunc()
-	return fmt.Sprint(magenta("AccessKey: ") + white(a.AccessKeyID) + "  " + magenta("SecretKey: ") + white(a.SecretAccessKey))
+	return fmt.Sprint(magenta("AccessKey: ") + white(a.Credentials.AccessKeyID) + "  " + magenta("SecretKey: ") + white(a.Credentials.SecretAccessKey))
 }
 
 // JSON - json formatted output
@@ -205,13 +226,13 @@ func fetchAuth() *probe.Error {
 		Println("\nTo configure Minio Client.")
 		if runtime.GOOS == "windows" {
 			Println("\n\tDownload https://dl.minio.io:9000/updates/2015/Oct/" + runtime.GOOS + "-" + runtime.GOARCH + "/mc.exe")
-			Println("\t$ mc.exe config host add localhost:9000 " + conf.AccessKeyID + " " + conf.SecretAccessKey)
+			Println("\t$ mc.exe config host add localhost:9000 " + conf.Credentials.AccessKeyID + " " + conf.Credentials.SecretAccessKey)
 			Println("\t$ mc.exe mb localhost/photobucket")
 			Println("\t$ mc.exe cp C:\\Photos... localhost/photobucket")
 		} else {
 			Println("\n\t$ wget https://dl.minio.io:9000/updates/2015/Oct/" + runtime.GOOS + "-" + runtime.GOARCH + "/mc")
 			Println("\t$ chmod 755 mc")
-			Println("\t$ ./mc config host add localhost:9000 " + conf.AccessKeyID + " " + conf.SecretAccessKey)
+			Println("\t$ ./mc config host add localhost:9000 " + conf.Credentials.AccessKeyID + " " + conf.Credentials.SecretAccessKey)
 			Println("\t$ ./mc mb localhost/photobucket")
 			Println("\t$ ./mc cp ~/Photos... localhost/photobucket")
 		}
@@ -287,7 +308,7 @@ func serverMain(c *cli.Context) {
 		fatalIf(probe.NewError(err), "Unable to validate the path", nil)
 	}
 	tls := (certFile != "" && keyFile != "")
-	apiServerConfig := serverConfig{
+	apiServerConfig := cloudServerConfig{
 		Address:     c.GlobalString("address"),
 		AccessLog:   c.GlobalBool("enable-accesslog"),
 		Anonymous:   c.GlobalBool("anonymous"),

server_fs_test.go

@@ -70,24 +70,24 @@ func (s *MyAPIFSCacheSuite) SetUpSuite(c *C) {
 	secretAccessKey, perr := generateSecretAccessKey()
 	c.Assert(perr, IsNil)
 
-	authConf := &AuthConfig{}
-	authConf.AccessKeyID = string(accessKeyID)
-	authConf.SecretAccessKey = string(secretAccessKey)
+	conf := newConfigV2()
+	conf.Credentials.AccessKeyID = string(accessKeyID)
+	conf.Credentials.SecretAccessKey = string(secretAccessKey)
 	s.accessKeyID = string(accessKeyID)
 	s.secretAccessKey = string(secretAccessKey)
 
 	// do this only once here
 	customConfigPath = root
 
-	perr = saveAuthConfig(authConf)
+	perr = saveConfig(conf)
 	c.Assert(perr, IsNil)
 
-	server := serverConfig{
+	cloudServer := cloudServerConfig{
 		Path:        fsroot,
 		MinFreeDisk: 0,
 		Anonymous:   false,
 	}
-	cloudStorageAPI := getNewCloudStorageAPI(server)
+	cloudStorageAPI := getNewCloudStorageAPI(cloudServer)
 	httpHandler := getCloudStorageAPIHandler(cloudStorageAPI)
 	testAPIFSCacheServer = httptest.NewServer(httpHandler)
 }