Refactored Autoload

Autoload now uses kernel events to watch files on disk. This greatly increases performance and reliability. Autoload will also watch user.json files for changes and reload the users data.

src/clientManager.js

@@ -13,7 +13,7 @@ function ClientManager() {
 	if(!/^win/.test(process.platform)) {
 		process.on('SIGHUP', function() {
 			console.log("Received 'SIGHUP'. Reloading Users.");
-			self.loadUsers();
+			self.reloadUsers();
 		});
 	}
 }
@@ -55,9 +55,35 @@ ClientManager.prototype.loadUser = function(name) {
 			name,
 			json
 		));
-		console.log(
-			"User '" + name + "' loaded."
-		);
+		console.log("User '%s' loaded.", name);
+	}
+};
+
+ClientManager.prototype.reloadUsers = function() {
+	var users = this.getUsers();
+	for (var i in users) {
+		this.reloadUser(users[i]);
+	}
+};
+
+ClientManager.prototype.reloadUser = function(name) {
+	var client = this.findClient(name);
+	if (client) {
+		try {
+			var json = fs.readFileSync(
+				Helper.HOME + "/users/" + name + "/user.json",
+				"utf-8"
+			);
+			json = JSON.parse(json);
+		} catch(e) {
+			console.log(e);
+			return;
+		}
+		if (!json) {
+			return;
+		}
+		client.config = json;
+		console.log("User '%s' reloaded.", name);
 	}
 };
 
@@ -117,34 +143,66 @@ ClientManager.prototype.removeUser = function(name) {
 	return true;
 };
 
+ClientManager.prototype.watchUser = function(name) {
+	var self = this;
+	var client = this.findClient(name);
+	if(!client || client.watcher) {
+		return;
+	}
+	var path = Helper.HOME + "/users/" + client.name + "/user.json";
+	var lastReload = Date.now();
+	client.watcher = fs.watch(path, {persistent: false}, function(event, filename) {
+		switch (event) {
+		case "change":
+			// user.json modified
+			if(Date.now() - lastReload > 50) {
+				self.reloadUser(client.name);
+				lastReload = Date.now();
+			}
+			break;
+		default:
+			break;
+		}
+	});
+};
+
 ClientManager.prototype.autoload = function(sockets) {
 	var self = this;
-	var loaded = ["erming"];
-	setInterval(function() {
-		var loaded = _.pluck(
-			self.clients,
-			"name"
-		);
 
-		var added = _.difference(self.getUsers(), loaded);
-		_.each(added, function(name) {
-			self.loadUser(name);
-		});
-
-		var removed = _.difference(loaded, self.getUsers());
-		_.each(removed, function(name) {
-			var client = _.find(
-				self.clients, {
-					name: name
-				}
-			);
-			if (client) {
-				client.quit();
-				self.clients = _.without(self.clients, client);
-				console.log(
-					"User '" + name + "' disconnected."
-				);
+	// Listen to new users being added/removed
+	fs.watch(Helper.HOME + "/users/", { persistent: false }, function(event, filename) {
+		switch (event) {
+		case "rename":
+			if(filename === null) {
+				// User removed.
+				var removed = _(self.clients)
+							.pluck('name')
+							.difference(self.getUsers())
+							.value();
+				_.each(removed, function(name) {
+					var client = self.findClient(name);
+					if (client) {
+						client.quit();
+						if(client.watcher) {
+							client.watcher.close();
+						}
+						self.clients = _.without(self.clients, client);
+						console.log("User '%s' disconnected.", name);
+					}
+				});
+			} else {
+				// User created.
+				self.loadUser(filename);
+				self.watchUser(filename);
 			}
-		});
-	}, 1000);
+			break;
+		default:
+			break;
+		}
+	});
+
+	// Listen to user modification
+	_.each(this.clients, function(client) {
+		self.watchUser(client.name);
+	});
 };