added komodo debug.log truncate on herd start

main.js

@@ -31,19 +31,18 @@ if (os.platform() === 'linux') {
 
 // GUI APP settings and starting gui on address http://120.0.0.1:17777
 var shepherd = require('./routes/shepherd'),
-    guiapp = express();
+		guiapp = express(),
+		appConfig = shepherd.loadLocalConfig(); // load app config
 
 guiapp.use(function(req, res, next) {
-        res.header("Access-Control-Allow-Origin", "http://127.0.0.1:17777");
-        res.header("Access-Control-Allow-Headers", "X-Requested-With");
-        res.header("Access-Control-Allow-Credentials", "true");
-        res.header("Access-Control-Allow-Headers", "Content-Type");
-        res.header("Access-Control-Allow-Methods", "PUT, GET, POST, DELETE, OPTIONS");
+	res.header('Access-Control-Allow-Origin', 'http://127.0.0.1:' + appConfig.iguanaAppPort);
+	res.header('Access-Control-Allow-Headers', 'X-Requested-With');
+	res.header('Access-Control-Allow-Credentials', 'true');
+	res.header('Access-Control-Allow-Headers', 'Content-Type');
+	res.header('Access-Control-Allow-Methods', 'PUT, GET, POST, DELETE, OPTIONS'); // TODO: limit allowed methods
 	next();
 });
 
-var appConfig = shepherd.loadLocalConfig(); // load app config
-
 // preload.js
 const _setImmediate = setImmediate,
 			_clearImmediate = clearImmediate;
@@ -69,7 +68,6 @@ guiapp.get('/', function (req, res) {
 
 var guipath = path.join(__dirname, '/gui');
 guiapp.use('/gui', express.static(guipath));
-
 guiapp.use('/shepherd', shepherd);
 
 /*if (cluster.isMaster && process.env.NODE_ENV !== "development") {
@@ -84,18 +82,19 @@ console.log(cluster)
 	console.log('guiapp listening on port ' + appConfig.iguanaAppPort + '!');
 });*/
 
-var server = require('http').createServer(guiapp);
-var io = require('socket.io').listen(server);
+var server = require('http').createServer(guiapp),
+		io = require('socket.io').listen(server);
+		
 server.listen(appConfig.iguanaAppPort, function() {
 	console.log('guiapp and sockets.io are listening on port ' + appConfig.iguanaAppPort + '!');  
 });
 
-io.set('origins', 'http://127.0.0.1:17777');
+io.set('origins', 'http://127.0.0.1:17777'); // set origin
 
 io.on('connection', function(client) {
 	console.log('EDEX GUI is connected...');
 
-  client.on('event', function(data) {
+	client.on('event', function(data) { // listen for client requests
 		console.log(data);
 	});
 	client.on('disconnect', function(data) {
@@ -107,7 +106,7 @@ io.on('connection', function(client) {
 	});  
 });
 
-shepherd.setIO(io);
+shepherd.setIO(io); // pass sockets object to shepherd router
 
 //io.emit('an event sent to all connected clients');
 

routes/shepherd.js

@@ -1048,9 +1048,8 @@ shepherd.readDebugLog = function(fileLocation, lastNLines) {
 						_fs.readFile(fileLocation, 'utf-8', function(err, data) {
 					    if (err) throw err;
 
-					    // TODO: truncate komodod debug.log on app start
-					    var lines = data.trim().split('\n');
-					    var lastLine = lines.slice(lines.length - lastNLines, lines.length).join('\n');
+					    var lines = data.trim().split('\n'),
+					    		lastLine = lines.slice(lines.length - lastNLines, lines.length).join('\n');
 					    resolve(lastLine);
 						});
 	        }
@@ -1156,6 +1155,9 @@ function herder(flock, data) {
     console.log('komodod flock selected...');
     console.log('selected data: ' + data);
 
+    // truncate debug.log
+    fs.unlink(komodoDir + '/debug.log');
+
     pm2.connect(true, function(err) { // start up pm2 god
       if (err) {
         console.error(err);