* @watchFile support for event scheduler

* Better/cleaner overall BBS shutdown WIP

core/bbs.js

@@ -5,22 +5,22 @@
 //SegfaultHandler.registerHandler('enigma-bbs-segfault.log');
 
 //	ENiGMA½
-let conf		= require('./config.js');
-let logger		= require('./logger.js');
-let miscUtil	= require('./misc_util.js');
-let database	= require('./database.js');
-let clientConns	= require('./client_connections.js');
+const conf			= require('./config.js');
+const logger		= require('./logger.js');
+const database		= require('./database.js');
+const clientConns	= require('./client_connections.js');
 
-let paths		= require('path');
-let async		= require('async');
-let util		= require('util');
-let _			= require('lodash');
-let assert		= require('assert');
-let mkdirs		= require('fs-extra').mkdirs;
+const async			= require('async');
+const util			= require('util');
+const _				= require('lodash');
+const mkdirs		= require('fs-extra').mkdirs;
 
 //	our main entry point
 exports.bbsMain	= bbsMain;
 
+//	object with various services we want to de-init/shutdown cleanly if possible
+const initServices = {};
+
 function bbsMain() {
 	async.waterfall(
 		[
@@ -84,6 +84,34 @@ function bbsMain() {
 	);
 }
 
+function shutdownSystem() {
+	logger.log.info('Process interrupted, shutting down...');
+
+	async.series(
+		[
+			function closeConnections(callback) {
+				const activeConnections = clientConns.getActiveConnections();
+				let i = activeConnections.length;
+				while(i--) {
+					activeConnections[i].term.write('\n\nServer is shutting down NOW! Disconnecting...\n\n');
+					clientConns.removeClient(activeConnections[i]);
+				}
+				callback(null);
+			},
+			function stopEventScheduler(callback) {
+				if(initServices.eventScheduler) {
+					return initServices.eventScheduler.shutdown(callback);
+				} else {
+					return callback(null);
+				}
+			} 
+		],
+		() => {
+			process.exit();
+		}
+	);
+}
+
 function initialize(cb) {
 	async.series(
 		[
@@ -102,18 +130,7 @@ function initialize(cb) {
 			function basicInit(callback) {
 				logger.init();
 
-				process.on('SIGINT', function onSigInt() {
-					logger.log.info('Process interrupted, shutting down...');
-
-					var activeConnections = clientConns.getActiveConnections();
-					var i = activeConnections.length;
-					while(i--) {
-						activeConnections[i].term.write('\n\nServer is shutting down NOW! Disconnecting...\n\n');
-						clientConns.removeClient(activeConnections[i]);
-					}
-					
-					process.exit();
-				});
+				process.on('SIGINT', shutdownSystem);
 			
 				//	Init some extensions
 				require('string-format').extend(String.prototype, require('./string_util.js').stringFormatExtensions);
@@ -172,7 +189,10 @@ function initialize(cb) {
 			},
 			function readyEventScheduler(callback) {
 				const EventSchedulerModule = require('./event_scheduler.js').EventSchedulerModule;
-				EventSchedulerModule.loadAndStart(callback);
+				EventSchedulerModule.loadAndStart( (err, modInst) => {
+					initServices.eventScheduler = modInst;
+					return callback(err);
+				});
 			}
 		],
 		function onComplete(err) {

core/event_scheduler.js

@@ -10,6 +10,7 @@ const _						= require('lodash');
 const later					= require('later');
 const path					= require('path');
 const pty					= require('ptyw.js');
+const gaze					= require('gaze');
 
 exports.getModule				= EventSchedulerModule;
 exports.EventSchedulerModule	= EventSchedulerModule;	//	allow for loadAndStart
@@ -102,8 +103,8 @@ class ScheduledEvent {
 		}	
 	}
 
-	executeAction(cb) {
-		Log.info( { eventName : this.name, action : this.action }, 'Executing scheduled event action...');
+	executeAction(reason, cb) {
+		Log.info( { eventName : this.name, action : this.action, reason : reason }, 'Executing scheduled event action...');
 
 		if('method' === this.action.type) {
 			const modulePath = path.join(__dirname, '../', this.action.location);	//	enigma-bbs base + supplied location (path/file.js')
@@ -158,14 +159,14 @@ function EventSchedulerModule(options) {
 	const self = this;
 	this.runningActions = new Set();
 	
-	this.performAction = function(schedEvent) {
+	this.performAction = function(schedEvent, reason) {
 		if(self.runningActions.has(schedEvent.name)) {
 			return;	//	already running
 		} 
 		
 		self.runningActions.add(schedEvent.name);
 
-		schedEvent.executeAction( () => {
+		schedEvent.executeAction(reason, () => {
 			self.runningActions.delete(schedEvent.name);
 		});		
 	};
@@ -187,14 +188,14 @@ EventSchedulerModule.loadAndStart = function(cb) {
 		
 		const modInst = new mod.getModule();
 		modInst.startup( err => {
-			return cb(err);
+			return cb(err, modInst);
 		});		
 	});
 };
 
 EventSchedulerModule.prototype.startup = function(cb) {
 	
-	this.eventTimers = [];
+	this.eventTimers	= [];
 	const self = this;
 	
 	if(this.moduleConfig && _.has(this.moduleConfig, 'events')) {
@@ -219,11 +220,20 @@ EventSchedulerModule.prototype.startup = function(cb) {
 
 			if(schedEvent.schedule.sched) {			
 				this.eventTimers.push(later.setInterval( () => {
-					self.performAction(schedEvent);	
+					self.performAction(schedEvent, 'Schedule');	
 				}, schedEvent.schedule.sched));
 			}
-			
-			//	:TODO: handle watchfile -> performAction
+
+			if(schedEvent.schedule.watchFile) {				
+				gaze(schedEvent.schedule.watchFile, (err, watcher) => {
+					//	:TODO: should track watched files & stop watching @ shutdown
+					watcher.on('all', (watchEvent, watchedPath) => {
+						if(schedEvent.schedule.watchFile === watchedPath) {
+							self.performAction(schedEvent, `Watch file: ${watchedPath}`);
+						}
+					});
+				});
+			}
 		});
 	}
 	
@@ -234,6 +244,6 @@ EventSchedulerModule.prototype.shutdown = function(cb) {
 	if(this.eventTimers) {
 		this.eventTimers.forEach( et => et.clear() );
 	}
-	
+		
 	cb(null);
 };