Remove timestamps from fastboot-app-server

Author: kzys

fastboot.js

@@ -8,28 +8,49 @@ const FastBootAppServer = require('fastboot-app-server');
 // because fastboot-app-server uses cluster, but it might change in future
 const cluster = require('cluster');
 
-function writeAppInitializedWhenReady() {
+class LoggerWithoutTimestamp {
+    constructor() {
+        this.prefix = cluster.isMaster ? 'master' : 'worker';
+    }
+    writeLine() {
+        this._write('info', Array.prototype.slice.apply(arguments));
+    }
+
+    writeError() {
+        this._write('error', Array.prototype.slice.apply(arguments));
+    }
+
+    _write(level, args) {
+        args[0] = `[${level}][${this.prefix}] ${args[0]}`
+        console.log.apply(console, args)
+    }
+}
+
+function writeAppInitializedWhenReady(logger) {
     let timeout;
 
     timeout = setInterval(function() {
-        console.log('waiting backend');
+        logger.writeLine('waiting backend');
         if (fs.existsSync('/tmp/backend-initialized')) {
-            console.log('backend is up. let heroku know the app is ready');
+            logger.writeLine('backend is up. let heroku know the app is ready');
             fs.writeFileSync('/tmp/app-initialized', 'hello');
             clearInterval(timeout);
         } else {
-            console.log('backend is still not up');
+            logger.writeLine('backend is still not up');
         }
     }, 1000);
 }
 
+var logger = new LoggerWithoutTimestamp();
+
 let server = new FastBootAppServer({
     distPath: 'dist',
     port: 9000,
+    ui: logger
 });
 
 if (!cluster.isWorker) {
-    writeAppInitializedWhenReady();
+    writeAppInitializedWhenReady(logger);
 }
 
 server.start();