Modify fatalIf, startup and update message logging code (#5780)

Use a common logging framework to log fatalIf, startup, Info and Update
messages.

cmd/common-main.go

@@ -34,9 +34,9 @@ func checkUpdate(mode string) {
 	// Its OK to ignore any errors during doUpdate() here.
 	if updateMsg, _, currentReleaseTime, latestReleaseTime, err := getUpdateInfo(2*time.Second, mode); err == nil {
 		if globalInplaceUpdateDisabled {
-			logger.Println(updateMsg)
+			logger.StartupMessage(updateMsg)
 		} else {
-			logger.Println(prepareUpdateMessage("Run `minio update`", latestReleaseTime.Sub(currentReleaseTime)))
+			logger.StartupMessage(prepareUpdateMessage("Run `minio update`", latestReleaseTime.Sub(currentReleaseTime)))
 		}
 	}
 }
@@ -48,7 +48,7 @@ func initConfig() {
 		logger.FatalIf(loadConfig(), "Unable to load config version: '%s'.", serverConfigVersion)
 	} else {
 		logger.FatalIf(newConfig(), "Unable to initialize minio config for the first time.")
-		logger.Println("Created minio configuration file successfully at " + getConfigDir())
+		logger.Info("Created minio configuration file successfully at " + getConfigDir())
 	}
 }
 

cmd/config-migrate.go

@@ -30,7 +30,7 @@ import (
 )
 
 // DO NOT EDIT following message template, please open a github issue to discuss instead.
-var configMigrateMSGTemplate = "Configuration file %s migrated from version '%s' to '%s' successfully.\n"
+var configMigrateMSGTemplate = "Configuration file %s migrated from version '%s' to '%s' successfully."
 
 // Migrates all config versions from "1" to "18".
 func migrateConfig() error {
@@ -195,7 +195,7 @@ func purgeV1() error {
 	}
 
 	os.RemoveAll(configFile)
-	logger.Println("Removed unsupported config version ‘1’.")
+	logger.Info("Removed unsupported config version ‘1’.")
 	return nil
 }
 
@@ -253,7 +253,7 @@ func migrateV2ToV3() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv2.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv2.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv2.Version, srvConfig.Version)
 	return nil
 }
 
@@ -291,7 +291,7 @@ func migrateV3ToV4() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv3.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv3.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv3.Version, srvConfig.Version)
 	return nil
 }
 
@@ -332,7 +332,7 @@ func migrateV4ToV5() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv4.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv4.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv4.Version, srvConfig.Version)
 	return nil
 }
 
@@ -421,7 +421,7 @@ func migrateV5ToV6() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv5.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv5.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv5.Version, srvConfig.Version)
 	return nil
 }
 
@@ -477,7 +477,7 @@ func migrateV6ToV7() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv6.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv6.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv6.Version, srvConfig.Version)
 	return nil
 }
 
@@ -540,7 +540,7 @@ func migrateV7ToV8() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv7.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv7.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv7.Version, srvConfig.Version)
 	return nil
 }
 
@@ -610,7 +610,7 @@ func migrateV8ToV9() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv8.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv8.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv8.Version, srvConfig.Version)
 	return nil
 }
 
@@ -678,7 +678,7 @@ func migrateV9ToV10() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv9.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv9.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv9.Version, srvConfig.Version)
 	return nil
 }
 
@@ -749,7 +749,7 @@ func migrateV10ToV11() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv10.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv10.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv10.Version, srvConfig.Version)
 	return nil
 }
 
@@ -847,7 +847,7 @@ func migrateV11ToV12() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv11.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv11.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv11.Version, srvConfig.Version)
 	return nil
 }
 
@@ -927,7 +927,7 @@ func migrateV12ToV13() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv12.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv12.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv12.Version, srvConfig.Version)
 	return nil
 }
 
@@ -1012,7 +1012,7 @@ func migrateV13ToV14() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv13.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv13.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv13.Version, srvConfig.Version)
 	return nil
 }
 
@@ -1101,7 +1101,7 @@ func migrateV14ToV15() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv14.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv14.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv14.Version, srvConfig.Version)
 	return nil
 }
 
@@ -1191,7 +1191,7 @@ func migrateV15ToV16() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv15.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv15.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv15.Version, srvConfig.Version)
 	return nil
 }
 
@@ -1312,7 +1312,7 @@ func migrateV16ToV17() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv16.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv16.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv16.Version, srvConfig.Version)
 	return nil
 }
 
@@ -1416,7 +1416,7 @@ func migrateV17ToV18() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv17.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv17.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv17.Version, srvConfig.Version)
 	return nil
 }
 
@@ -1522,7 +1522,7 @@ func migrateV18ToV19() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv18.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv18.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv18.Version, srvConfig.Version)
 	return nil
 }
 
@@ -1627,7 +1627,7 @@ func migrateV19ToV20() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv19.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv19.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv19.Version, srvConfig.Version)
 	return nil
 }
 
@@ -1731,7 +1731,7 @@ func migrateV20ToV21() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv20.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv20.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv20.Version, srvConfig.Version)
 	return nil
 }
 
@@ -1835,7 +1835,7 @@ func migrateV21ToV22() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv21.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv21.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv21.Version, srvConfig.Version)
 	return nil
 }
 
@@ -1948,6 +1948,6 @@ func migrateV22ToV23() error {
 		return fmt.Errorf("Failed to migrate config from ‘%s’ to ‘%s’. %v", cv22.Version, srvConfig.Version, err)
 	}
 
-	logger.Printf(configMigrateMSGTemplate, configFile, cv22.Version, srvConfig.Version)
+	logger.Info(configMigrateMSGTemplate, configFile, cv22.Version, srvConfig.Version)
 	return nil
 }

cmd/gateway-main.go

@@ -209,7 +209,7 @@ func StartGateway(ctx *cli.Context, gw Gateway) {
 
 		// Print a warning message if gateway is not ready for production before the startup banner.
 		if !gw.Production() {
-			logger.Println(colorYellow("\n               *** Warning: Not Ready for Production ***"))
+			logger.StartupMessage(colorYellow("\n               *** Warning: Not Ready for Production ***"))
 		}
 
 		// Print gateway startup message.

cmd/gateway-startup-msg.go

@@ -56,12 +56,12 @@ func printGatewayCommonMsg(apiEndpoints []string) {
 
 	apiEndpointStr := strings.Join(apiEndpoints, "  ")
 	// Colorize the message and print.
-	logger.Println(colorBlue("\nEndpoint: ") + colorBold(fmt.Sprintf(getFormatStr(len(apiEndpointStr), 1), apiEndpointStr)))
-	logger.Println(colorBlue("AccessKey: ") + colorBold(fmt.Sprintf("%s ", cred.AccessKey)))
-	logger.Println(colorBlue("SecretKey: ") + colorBold(fmt.Sprintf("%s ", cred.SecretKey)))
+	logger.StartupMessage(colorBlue("\nEndpoint: ") + colorBold(fmt.Sprintf(getFormatStr(len(apiEndpointStr), 1), apiEndpointStr)))
+	logger.StartupMessage(colorBlue("AccessKey: ") + colorBold(fmt.Sprintf("%s ", cred.AccessKey)))
+	logger.StartupMessage(colorBlue("SecretKey: ") + colorBold(fmt.Sprintf("%s ", cred.SecretKey)))
 
 	if globalIsBrowserEnabled {
-		logger.Println(colorBlue("\nBrowser Access:"))
-		logger.Println(fmt.Sprintf(getFormatStr(len(apiEndpointStr), 3), apiEndpointStr))
+		logger.StartupMessage(colorBlue("\nBrowser Access:"))
+		logger.StartupMessage(fmt.Sprintf(getFormatStr(len(apiEndpointStr), 3), apiEndpointStr))
 	}
 }

cmd/gateway/sia/gateway-sia.go

@@ -163,9 +163,9 @@ func (g *Sia) NewGatewayLayer(creds auth.Credentials) (minio.ObjectLayer, error)
 	colorBlue := color.New(color.FgBlue).SprintfFunc()
 	colorBold := color.New(color.Bold).SprintFunc()
 
-	logger.Println(colorBlue("\nSia Gateway Configuration:"))
-	logger.Println(colorBlue("  Sia Daemon API Address:") + colorBold(fmt.Sprintf(" %s\n", sia.Address)))
-	logger.Println(colorBlue("  Sia Temp Directory:") + colorBold(fmt.Sprintf(" %s\n", sia.TempDir)))
+	logger.StartupMessage(colorBlue("\nSia Gateway Configuration:"))
+	logger.StartupMessage(colorBlue("  Sia Daemon API Address:") + colorBold(fmt.Sprintf(" %s\n", sia.Address)))
+	logger.StartupMessage(colorBlue("  Sia Temp Directory:") + colorBold(fmt.Sprintf(" %s\n", sia.TempDir)))
 	return sia, nil
 }
 

cmd/logger/logger.go

@@ -45,7 +45,8 @@ type Level int8
 
 // Enumerated level types
 const (
-	Error Level = iota + 1
+	Information Level = iota + 1
+	Error
 	Fatal
 )
 
@@ -61,6 +62,8 @@ var matchingFuncNames = [...]string{
 func (level Level) String() string {
 	var lvlStr string
 	switch level {
+	case Information:
+		lvlStr = "INFO"
 	case Error:
 		lvlStr = "ERROR"
 	case Fatal:
@@ -69,9 +72,26 @@ func (level Level) String() string {
 	return lvlStr
 }
 
+// Console interface describes the methods that needs to be implemented to satisfy the interface requirements.
+type Console interface {
+	json(msg string, args ...interface{})
+	quiet(msg string, args ...interface{})
+	pretty(msg string, args ...interface{})
+}
+
+func consoleLog(console Console, msg string, args ...interface{}) {
+	if jsonFlag {
+		console.json(msg, args...)
+	} else if quiet {
+		console.quiet(msg, args...)
+	} else {
+		console.pretty(msg, args...)
+	}
+}
+
 type traceEntry struct {
-	Message   string            `json:"message"`
-	Source    []string          `json:"source"`
+	Message   string            `json:"message,omitempty"`
+	Source    []string          `json:"source,omitempty"`
 	Variables map[string]string `json:"variables,omitempty"`
 }
 type args struct {
@@ -81,18 +101,18 @@ type args struct {
 
 type api struct {
 	Name string `json:"name,omitempty"`
-	Args args   `json:"args,omitempty"`
+	Args *args  `json:"args,omitempty"`
 }
 
 type logEntry struct {
-	Level      string     `json:"level"`
-	Time       string     `json:"time"`
-	API        api        `json:"api,omitempty"`
-	RemoteHost string     `json:"remotehost,omitempty"`
-	RequestID  string     `json:"requestID,omitempty"`
-	UserAgent  string     `json:"userAgent,omitempty"`
-	Cause      string     `json:"cause,omitempty"`
-	Trace      traceEntry `json:"error"`
+	Level      string      `json:"level"`
+	Time       string      `json:"time"`
+	API        *api        `json:"api,omitempty"`
+	RemoteHost string      `json:"remotehost,omitempty"`
+	RequestID  string      `json:"requestID,omitempty"`
+	UserAgent  string      `json:"userAgent,omitempty"`
+	Message    string      `json:"message,omitempty"`
+	Trace      *traceEntry `json:"error,omitempty"`
 }
 
 // quiet: Hide startup messages if enabled
@@ -112,20 +132,6 @@ func EnableJSON() {
 	quiet = true
 }
 
-// Println - wrapper to console.Println() with quiet flag.
-func Println(args ...interface{}) {
-	if !quiet {
-		console.Println(args...)
-	}
-}
-
-// Printf - wrapper to console.Printf() with quiet flag.
-func Printf(format string, args ...interface{}) {
-	if !quiet {
-		console.Printf(format, args...)
-	}
-}
-
 // Init sets the trimStrings to possible GOPATHs
 // and GOROOT directories. Also append github.com/minio/minio
 // This is done to clean up the filename, when stack trace is
@@ -171,6 +177,17 @@ func trimTrace(f string) string {
 	return filepath.FromSlash(f)
 }
 
+func getSource() string {
+	pc, file, lineNumber, ok := runtime.Caller(5)
+	if ok {
+		// Clean up the common prefixes
+		file = trimTrace(file)
+		_, funcName := filepath.Split(runtime.FuncForPC(pc).Name())
+		return fmt.Sprintf("%v:%v:%v()", file, lineNumber, funcName)
+	}
+	return ""
+}
+
 // getTrace method - creates and returns stack trace
 func getTrace(traceLevel int) []string {
 	var trace []string
@@ -203,57 +220,6 @@ func getTrace(traceLevel int) []string {
 	return trace
 }
 
-func logIf(level Level, err error, msg string,
-	data ...interface{}) {
-	if err == nil {
-		return
-	}
-	// Get the cause for the Error
-	cause := err.Error()
-	// Get full stack trace
-	trace := getTrace(3)
-	// Get time
-	timeOfError := time.Now().UTC().Format(time.RFC3339Nano)
-	// Output the formatted log message at console
-	var output string
-	message := fmt.Sprintf(msg, data...)
-	if jsonFlag {
-		logJSON, err := json.Marshal(&logEntry{
-			Level: level.String(),
-			Time:  timeOfError,
-			Cause: cause,
-			Trace: traceEntry{Source: trace, Message: message},
-		})
-		if err != nil {
-			panic("json marshal of logEntry failed: " + err.Error())
-		}
-		output = string(logJSON)
-	} else {
-		// Add a sequence number and formatting for each stack trace
-		// No formatting is required for the first entry
-		trace[0] = "1: " + trace[0]
-		for i, element := range trace[1:] {
-			trace[i+1] = fmt.Sprintf("%8v: %s", i+2, element)
-		}
-		errMsg := fmt.Sprintf("[%s] [%s] %s (%s)",
-			timeOfError, level.String(), message, cause)
-
-		output = fmt.Sprintf("\nTrace: %s\n%s",
-			strings.Join(trace, "\n"),
-			colorRed(colorBold(errMsg)))
-	}
-	fmt.Println(output)
-
-	if level == Fatal {
-		os.Exit(1)
-	}
-}
-
-// FatalIf :
-func FatalIf(err error, msg string, data ...interface{}) {
-	logIf(Fatal, err, msg, data...)
-}
-
 // LogIf :
 func LogIf(ctx context.Context, err error) {
 	if err == nil {
@@ -289,8 +255,8 @@ func LogIf(ctx context.Context, err error) {
 			RequestID:  req.RequestID,
 			UserAgent:  req.UserAgent,
 			Time:       time.Now().UTC().Format(time.RFC3339Nano),
-			API:        api{Name: API, Args: args{Bucket: req.BucketName, Object: req.ObjectName}},
-			Trace:      traceEntry{Message: message, Source: trace, Variables: tags},
+			API:        &api{Name: API, Args: &args{Bucket: req.BucketName, Object: req.ObjectName}},
+			Trace:      &traceEntry{Message: message, Source: trace, Variables: tags},
 		})
 		if err != nil {
 			panic(err)
@@ -348,3 +314,93 @@ func LogIf(ctx context.Context, err error) {
 	}
 	fmt.Println(output)
 }
+
+// FatalIf :
+func FatalIf(err error, msg string, data ...interface{}) {
+	if err != nil {
+		if msg != "" {
+			consoleLog(fatalMessage, msg, data...)
+		} else {
+			consoleLog(fatalMessage, err.Error())
+		}
+	}
+}
+
+var fatalMessage fatalMsg
+
+type fatalMsg struct {
+}
+
+func (f fatalMsg) json(msg string, args ...interface{}) {
+	logJSON, err := json.Marshal(&logEntry{
+		Level: Fatal.String(),
+		Time:  time.Now().UTC().Format(time.RFC3339Nano),
+		Trace: &traceEntry{Message: fmt.Sprintf(msg, args...), Source: []string{getSource()}},
+	})
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(string(logJSON))
+	os.Exit(1)
+
+}
+
+func (f fatalMsg) quiet(msg string, args ...interface{}) {
+	f.pretty(msg, args...)
+}
+
+func (f fatalMsg) pretty(msg string, args ...interface{}) {
+	errMsg := fmt.Sprintf(msg, args...)
+	fmt.Println(colorRed(colorBold("Error: " + errMsg)))
+	os.Exit(1)
+}
+
+var info infoMsg
+
+type infoMsg struct {
+}
+
+func (i infoMsg) json(msg string, args ...interface{}) {
+	logJSON, err := json.Marshal(&logEntry{
+		Level:   Information.String(),
+		Message: fmt.Sprintf(msg, args...),
+		Time:    time.Now().UTC().Format(time.RFC3339Nano),
+	})
+	if err != nil {
+		panic(err)
+	}
+	fmt.Println(string(logJSON))
+}
+
+func (i infoMsg) quiet(msg string, args ...interface{}) {
+	i.pretty(msg, args...)
+}
+
+func (i infoMsg) pretty(msg string, args ...interface{}) {
+	console.Printf(msg, args...)
+}
+
+// Info :
+func Info(msg string, data ...interface{}) {
+	consoleLog(info, msg+"\n", data...)
+}
+
+var startupMessage startUpMsg
+
+type startUpMsg struct {
+}
+
+func (s startUpMsg) json(msg string, args ...interface{}) {
+}
+
+func (s startUpMsg) quiet(msg string, args ...interface{}) {
+}
+
+func (s startUpMsg) pretty(msg string, args ...interface{}) {
+	console.Printf(msg, args...)
+}
+
+// StartupMessage :
+func StartupMessage(msg string, data ...interface{}) {
+	consoleLog(startupMessage, msg+"\n", data...)
+}

cmd/prepare-storage.go

@@ -22,7 +22,6 @@ import (
 	"os"
 	"time"
 
-	"github.com/minio/mc/pkg/console"
 	"github.com/minio/minio/cmd/logger"
 )
 
@@ -218,11 +217,11 @@ func waitForFormatXL(ctx context.Context, firstDisk bool, endpoints EndpointList
 				switch err {
 				case errNotFirstDisk:
 					// Fresh setup, wait for first server to be up.
-					console.Println("Waiting for the first server to format the disks.")
+					logger.Info("Waiting for the first server to format the disks.")
 					continue
 				case errXLReadQuorum:
 					// no quorum available continue to wait for minimum number of servers.
-					console.Printf("Waiting for a minimum of %d disks to come online (elapsed %s)\n", len(endpoints)/2, getElapsedTime())
+					logger.Info("Waiting for a minimum of %d disks to come online (elapsed %s)\n", len(endpoints)/2, getElapsedTime())
 					continue
 				case errXLV3ThisEmpty:
 					// need to wait for this error to be healed, so continue.

cmd/server-startup-msg.go

@@ -115,17 +115,17 @@ func printServerCommonMsg(apiEndpoints []string) {
 	apiEndpointStr := strings.Join(apiEndpoints, "  ")
 
 	// Colorize the message and print.
-	logger.Println(colorBlue("Endpoint: ") + colorBold(fmt.Sprintf(getFormatStr(len(apiEndpointStr), 1), apiEndpointStr)))
-	logger.Println(colorBlue("AccessKey: ") + colorBold(fmt.Sprintf("%s ", cred.AccessKey)))
-	logger.Println(colorBlue("SecretKey: ") + colorBold(fmt.Sprintf("%s ", cred.SecretKey)))
+	logger.StartupMessage(colorBlue("Endpoint: ") + colorBold(fmt.Sprintf(getFormatStr(len(apiEndpointStr), 1), apiEndpointStr)))
+	logger.StartupMessage(colorBlue("AccessKey: ") + colorBold(fmt.Sprintf("%s ", cred.AccessKey)))
+	logger.StartupMessage(colorBlue("SecretKey: ") + colorBold(fmt.Sprintf("%s ", cred.SecretKey)))
 	if region != "" {
-		logger.Println(colorBlue("Region: ") + colorBold(fmt.Sprintf(getFormatStr(len(region), 3), region)))
+		logger.StartupMessage(colorBlue("Region: ") + colorBold(fmt.Sprintf(getFormatStr(len(region), 3), region)))
 	}
 	printEventNotifiers()
 
 	if globalIsBrowserEnabled {
-		logger.Println(colorBlue("\nBrowser Access:"))
-		logger.Println(fmt.Sprintf(getFormatStr(len(apiEndpointStr), 3), apiEndpointStr))
+		logger.StartupMessage(colorBlue("\nBrowser Access:"))
+		logger.StartupMessage(fmt.Sprintf(getFormatStr(len(apiEndpointStr), 3), apiEndpointStr))
 	}
 }
 
@@ -141,7 +141,7 @@ func printEventNotifiers() {
 		arnMsg += colorBold(fmt.Sprintf(getFormatStr(len(arn), 1), arn))
 	}
 
-	logger.Println(arnMsg)
+	logger.StartupMessage(arnMsg)
 }
 
 // Prints startup message for command line access. Prints link to our documentation
@@ -151,24 +151,24 @@ func printCLIAccessMsg(endPoint string, alias string) {
 	cred := globalServerConfig.GetCredential()
 
 	// Configure 'mc', following block prints platform specific information for minio client.
-	logger.Println(colorBlue("\nCommand-line Access: ") + mcQuickStartGuide)
+	logger.StartupMessage(colorBlue("\nCommand-line Access: ") + mcQuickStartGuide)
 	if runtime.GOOS == globalWindowsOSName {
 		mcMessage := fmt.Sprintf("$ mc.exe config host add %s %s %s %s", alias, endPoint, cred.AccessKey, cred.SecretKey)
-		logger.Println(fmt.Sprintf(getFormatStr(len(mcMessage), 3), mcMessage))
+		logger.StartupMessage(fmt.Sprintf(getFormatStr(len(mcMessage), 3), mcMessage))
 	} else {
 		mcMessage := fmt.Sprintf("$ mc config host add %s %s %s %s", alias, endPoint, cred.AccessKey, cred.SecretKey)
-		logger.Println(fmt.Sprintf(getFormatStr(len(mcMessage), 3), mcMessage))
+		logger.StartupMessage(fmt.Sprintf(getFormatStr(len(mcMessage), 3), mcMessage))
 	}
 }
 
 // Prints startup message for Object API acces, prints link to our SDK documentation.
 func printObjectAPIMsg() {
-	logger.Println(colorBlue("\nObject API (Amazon S3 compatible):"))
-	logger.Println(colorBlue("   Go: ") + fmt.Sprintf(getFormatStr(len(goQuickStartGuide), 8), goQuickStartGuide))
-	logger.Println(colorBlue("   Java: ") + fmt.Sprintf(getFormatStr(len(javaQuickStartGuide), 6), javaQuickStartGuide))
-	logger.Println(colorBlue("   Python: ") + fmt.Sprintf(getFormatStr(len(pyQuickStartGuide), 4), pyQuickStartGuide))
-	logger.Println(colorBlue("   JavaScript: ") + jsQuickStartGuide)
-	logger.Println(colorBlue("   .NET: ") + fmt.Sprintf(getFormatStr(len(dotnetQuickStartGuide), 6), dotnetQuickStartGuide))
+	logger.StartupMessage(colorBlue("\nObject API (Amazon S3 compatible):"))
+	logger.StartupMessage(colorBlue("   Go: ") + fmt.Sprintf(getFormatStr(len(goQuickStartGuide), 8), goQuickStartGuide))
+	logger.StartupMessage(colorBlue("   Java: ") + fmt.Sprintf(getFormatStr(len(javaQuickStartGuide), 6), javaQuickStartGuide))
+	logger.StartupMessage(colorBlue("   Python: ") + fmt.Sprintf(getFormatStr(len(pyQuickStartGuide), 4), pyQuickStartGuide))
+	logger.StartupMessage(colorBlue("   JavaScript: ") + jsQuickStartGuide)
+	logger.StartupMessage(colorBlue("   .NET: ") + fmt.Sprintf(getFormatStr(len(dotnetQuickStartGuide), 6), dotnetQuickStartGuide))
 }
 
 // Get formatted disk/storage info message.
@@ -185,15 +185,14 @@ func getStorageInfoMsg(storageInfo StorageInfo) string {
 
 // Prints startup message of storage capacity and erasure information.
 func printStorageInfo(storageInfo StorageInfo) {
-	logger.Println(getStorageInfoMsg(storageInfo))
-	logger.Println()
+	logger.StartupMessage(getStorageInfoMsg(storageInfo) + "\n")
 }
 
 func printCacheStorageInfo(storageInfo StorageInfo) {
 	msg := fmt.Sprintf("%s %s Free, %s Total", colorBlue("Cache Capacity:"),
 		humanize.IBytes(uint64(storageInfo.Free)),
 		humanize.IBytes(uint64(storageInfo.Total)))
-	logger.Println(msg)
+	logger.StartupMessage(msg)
 }
 
 // Prints certificate expiry date warning
@@ -216,5 +215,5 @@ func getCertificateChainMsg(certs []*x509.Certificate) string {
 
 // Prints the certificate expiry message.
 func printCertificateMsg(certs []*x509.Certificate) {
-	logger.Println(getCertificateChainMsg(certs))
+	logger.StartupMessage(getCertificateChainMsg(certs))
 }

cmd/signals.go

@@ -68,14 +68,14 @@ func handleSignals() {
 			exit(err == nil && oerr == nil)
 		case osSignal := <-globalOSSignalCh:
 			stopHTTPTrace()
-			logger.Printf("Exiting on signal %v\n", osSignal)
+			logger.Info("Exiting on signal %v", osSignal)
 			exit(stopProcess())
 		case signal := <-globalServiceSignalCh:
 			switch signal {
 			case serviceStatus:
 				// Ignore this at the moment.
 			case serviceRestart:
-				logger.Println("Restarting on service signal")
+				logger.Info("Restarting on service signal")
 				err := globalHTTPServer.Shutdown()
 				logger.LogIf(context.Background(), err)
 				stopHTTPTrace()
@@ -84,7 +84,7 @@ func handleSignals() {
 
 				exit(err == nil && rerr == nil)
 			case serviceStop:
-				logger.Println("Stopping on service signal")
+				logger.Info("Stopping on service signal")
 				stopHTTPTrace()
 				exit(stopProcess())
 			}

cmd/update-main.go

@@ -501,27 +501,27 @@ func mainUpdate(ctx *cli.Context) {
 	minioMode := ""
 	updateMsg, sha256Hex, _, latestReleaseTime, err := getUpdateInfo(10*time.Second, minioMode)
 	if err != nil {
-		logger.Println(err)
+		logger.Info(err.Error())
 		os.Exit(-1)
 	}
 
 	// Nothing to update running the latest release.
 	if updateMsg == "" {
-		logger.Println(greenColorSprintf("You are already running the most recent version of ‘minio’."))
+		logger.Info(greenColorSprintf("You are already running the most recent version of ‘minio’."))
 		os.Exit(0)
 	}
 
-	logger.Println(updateMsg)
+	logger.Info(updateMsg)
 	// if the in-place update is disabled then we shouldn't ask the
 	// user to update the binaries.
 	if strings.Contains(updateMsg, minioReleaseURL) && !globalInplaceUpdateDisabled {
 		var successMsg string
 		successMsg, err = doUpdate(sha256Hex, latestReleaseTime, shouldUpdate(quiet, sha256Hex, latestReleaseTime))
 		if err != nil {
-			logger.Println(err)
+			logger.Info(err.Error())
 			os.Exit(-1)
 		}
-		logger.Println(successMsg)
+		logger.Info(successMsg)
 		os.Exit(1)
 	}
 }