server: We should fail properly during server startup. (#2689)

Fixes #2688

cmd/server-main.go

@@ -388,28 +388,30 @@ func serverMain(c *cli.Context) {
 		return exitSuccess
 	})
 
-	// Prints the formatted startup message.
-	printStartupMessage(endPoints)
-
 	// Start server.
 	// Configure TLS if certs are available.
 	wait := make(chan struct{}, 1)
 	go func(tls bool, wait chan<- struct{}) {
-		if tls {
-			err = apiServer.ListenAndServeTLS(mustGetCertFile(), mustGetKeyFile())
-		} else {
-			// Fallback to http.
-			err = apiServer.ListenAndServe()
-		}
+		fatalIf(func() error {
+			defer func() {
 				wait <- struct{}{}
-
+			}()
+			if tls {
+				return apiServer.ListenAndServeTLS(mustGetCertFile(), mustGetKeyFile())
+			} // Fallback to http.
+			return apiServer.ListenAndServe()
+		}(), "Failed to start minio server.")
 	}(tls, wait)
+
+	// Wait for formatting of disks.
 	err = formatDisks(disks, ignoredDisks)
 	if err != nil {
 		// FIXME: call graceful exit
 		errorIf(err, "formatting storage disks failed")
 		return
 	}
+
+	// Once formatted, initialize object layer.
 	newObject, err := newObjectLayer(disks, ignoredDisks)
 	if err != nil {
 		// FIXME: call graceful exit
@@ -417,12 +419,13 @@ func serverMain(c *cli.Context) {
 		return
 	}
 
-	printEventNotifiers()
+	// Prints the formatted startup message.
+	printStartupMessage(endPoints)
 
 	objLayerMutex.Lock()
 	globalObjectAPI = newObject
 	objLayerMutex.Unlock()
-	<-wait
 
-	fatalIf(err, "Failed to start minio server.")
+	// Waits on the server.
+	<-wait
 }

cmd/server-startup-msg.go

@@ -60,6 +60,7 @@ func printServerCommonMsg(endPoints []string) {
 	console.Println(colorBlue("AccessKey: ") + colorBold(fmt.Sprintf("%s ", cred.AccessKeyID)))
 	console.Println(colorBlue("SecretKey: ") + colorBold(fmt.Sprintf("%s ", cred.SecretAccessKey)))
 	console.Println(colorBlue("Region: ") + colorBold(fmt.Sprintf(getFormatStr(len(region), 3), region)))
+	printEventNotifiers()
 
 	console.Println(colorBlue("\nBrowser Access:"))
 	console.Println(fmt.Sprintf(getFormatStr(len(endPointStr), 3), endPointStr))
@@ -71,12 +72,12 @@ func printEventNotifiers() {
 		// In case initEventNotifier() was not done or failed.
 		return
 	}
-	arnMsg := colorBlue("\nSQS ARNs: ")
+	arnMsg := colorBlue("SQS ARNs: ")
 	if len(globalEventNotifier.queueTargets) == 0 {
-		arnMsg += colorBold(fmt.Sprintf(getFormatStr(len("<none>"), 2), "<none>"))
+		arnMsg += colorBold(fmt.Sprintf(getFormatStr(len("<none>"), 1), "<none>"))
 	}
 	for queueArn := range globalEventNotifier.queueTargets {
-		arnMsg += colorBold(fmt.Sprintf(getFormatStr(len(queueArn), 2), queueArn))
+		arnMsg += colorBold(fmt.Sprintf(getFormatStr(len(queueArn), 1), queueArn))
 	}
 	console.Println(arnMsg)
 }