Merge branch 'feature/pm2-integration' into dev

Author: gocreating

configs/templates/Procfile

@@ -1 +1 @@
-web: npm start
+web: npm run pm2

gulpfile.js

@@ -215,6 +215,7 @@ gulp.task('deploy', function(cb) {
         'rm -rf ./configs',
         'mkdir configs',
         'cp -r ../configs/project ./configs/',
+        'cp ../configs/templates/Procfile ./',
         'cp ../package.json ./',
         'cp -r ../build ./',
       ], './.deploy', cbSeries);

package.json

@@ -10,6 +10,7 @@
     "build": "gulp build",
     "mocha": "mocha specs/index.js --timeout 10000",
     "start": "node build/server/server.js",
+    "pm2": "node ./build/server/pm2Entry.js",
     "android": "npm run native-run-android && npm run native-watch-css",
     "native-run-android": "node ./node_modules/react-native/local-cli/cli.js run-android",
     "native-watch-css": "./node_modules/react-native-css/bin/react-native-css -i ./src/native/styles/index.scss -o ./src/native/styles/index.js --watch",
@@ -107,6 +108,7 @@
     "object-assign": "^4.1.0",
     "passport": "^0.3.2",
     "passport-jwt": "^2.0.0",
+    "pm2": "^2.0.18",
     "react": "^15.3.2",
     "react-bootstrap": "^0.30.5",
     "react-dom": "^15.0.2",

src/server/pm2Entry.js

@@ -0,0 +1,40 @@
+// ref: <http://pm2.keymetrics.io/docs/usage/use-pm2-with-cloud-providers/>
+var pm2 = require('pm2');
+
+var instances = process.env.WEB_CONCURRENCY || -1; // Set by Heroku or -1 to scale to max cpu core -1
+var maxMemory = process.env.WEB_MEMORY || 512;    // " " "
+
+pm2.connect(function() {
+  pm2.start({
+    script: './build/server/server.js',
+    name: 'production-app',     // ----> THESE ATTRIBUTES ARE OPTIONAL:
+    exec_mode: 'cluster',            // ----> https://github.com/Unitech/PM2/blob/master/ADVANCED_README.md#schema
+    instances: instances,
+    max_memory_restart: maxMemory + 'M',   // Auto restart if process taking more than XXmo
+    env: {                            // If needed declare some environment variables
+      NODE_ENV: 'production',
+      AWESOME_SERVICE_API_TOKEN: 'xxx',
+    },
+  }, function(err) {
+    if (err) {
+      return console.error(
+        'Error while launching applications',
+        err.stack || err
+      );
+    }
+    console.log('PM2 and application has been succesfully started');
+
+    // Display logs in standard output
+    pm2.launchBus(function(err, bus) {
+      console.log('[PM2] Log streaming started');
+
+      bus.on('log:out', function(packet) {
+        console.log('[App:%s] %s', packet.process.name, packet.data);
+      });
+
+      bus.on('log:err', function(packet) {
+        console.error('[App:%s][Err] %s', packet.process.name, packet.data);
+      });
+    });
+  });
+});