issue #478 - hot-swapping of plugins

.gitignore

@@ -1,7 +1,3 @@
-#################
-## npm
-#################
-
 npm-debug.log
 node_modules/
 sftp-config.json
@@ -9,12 +5,10 @@ config.json
 public/src/nodebb.min.js
 public/config.json
 public/css/*.css
-public/themes/*
-!/public/themes/vanilla
-!/public/themes/cerulean
-!/public/themes/modern
 *.sublime-project
 *.sublime-workspace
-plugins/*
 .project
 *.swp
+Vagrantfile
+.vagrant
+provision.sh

src/plugins.js

@@ -17,8 +17,31 @@ var fs = require('fs'),
 			if (this.initialized) return;
 			if (global.env === 'development') winston.info('[plugins] Initializing plugins system');
 
+			this.reload(function(err) {
+				if (err) {
+					if (global.env === 'development') winston.info('[plugins] NodeBB encountered a problem while loading plugins', err.message);
+					return;
+				}
+
+				if (global.env === 'development') winston.info('[plugins] Plugins OK');
+
+				plugins.initialized = true;
+				plugins.readyEvent.emit('ready');
+			});
+		},
+		ready: function(callback) {
+			if (!this.initialized) this.readyEvent.once('ready', callback);
+			else callback();
+		},
+		initialized: false,
+		reload: function(callback) {
 			var _self = this;
 
+			// Resetting all local plugin data
+			this.loadedHooks = {};
+			this.staticDirs = {};
+			this.cssFiles.length = 0;
+
 			// Read the list of activated plugins and require their libraries
 			async.waterfall([
 				function(next) {
@@ -47,23 +70,8 @@ var fs = require('fs'),
 
 					next();
 				}
-			], function(err) {
+			], callback);
-				if (err) {
-					if (global.env === 'development') winston.info('[plugins] NodeBB encountered a problem while loading plugins', err.message);
-					return;
-				}
-
-				if (global.env === 'development') winston.info('[plugins] Plugins OK');
-
-				_self.initialized = true;
-				_self.readyEvent.emit('ready');
-			});
 		},
-		ready: function(callback) {
-			if (!this.initialized) this.readyEvent.once('ready', callback);
-			else callback();
-		},
-		initialized: false,
 		loadPlugin: function(pluginPath, callback) {
 			var _self = this;
 
@@ -80,16 +88,25 @@ var fs = require('fs'),
 
 							fs.exists(libraryPath, function(exists) {
 								if (exists) {
+									if (!_self.libraries[pluginData.id]) {
 										_self.libraries[pluginData.id] = require(libraryPath);
+									}
 
+									// Register hooks for this plugin
 									if (pluginData.hooks && Array.isArray(pluginData.hooks) && pluginData.hooks.length > 0) {
 										async.each(pluginData.hooks, function(hook, next) {
 											_self.registerHook(pluginData.id, hook, next);
 										}, next);
 									}
+								} else {
+									winston.warn('[plugins.reload] Library not found for plugin: ' + pluginData.id);
+									next();
 								}
 							});
-						} else next();
+						} else {
+							winston.warn('[plugins.reload] Library not found for plugin: ' + pluginData.id);
+							next();
+						}
 					},
 					function(next) {
 						// Static Directories for Plugins

src/routes/plugins.js

@@ -0,0 +1,25 @@
+var	nconf = require('nconf'),
+	path = require('path'),
+	fs = require('fs'),
+	Plugins = require('../plugins'),
+
+	PluginRoutes = function(app) {
+		// Static Assets
+		app.get('/plugins/:id/*', function(req, res) {
+			var	relPath = req.url.replace('/plugins/' + req.params.id, '');
+			if (Plugins.staticDirs[req.params.id]) {
+				var	fullPath = path.join(Plugins.staticDirs[req.params.id], relPath);
+				fs.exists(fullPath, function(exists) {
+					if (exists) {
+						res.sendfile(fullPath);
+					} else {
+						res.redirect('/404');
+					}
+				})
+			} else {
+				res.redirect('/404');
+			}
+		});
+	};
+
+module.exports = PluginRoutes;

src/webserver.js

@@ -151,19 +151,6 @@ var express = require('express'),
 			},
 			function(next) {
 				async.parallel([
-					function(next) {
-						// Static Directories for NodeBB Plugins
-						plugins.ready(function () {
-							for (d in plugins.staticDirs) {
-								app.use(nconf.get('relative_path') + '/plugins/' + d, express.static(plugins.staticDirs[d]));
-								if (process.env.NODE_ENV === 'development') {
-									winston.info('Static directory routed for plugin: ' + d);
-								}
-							}
-
-							next();
-						});
-					},
 					function(next) {
 						// Theme configuration
 						RDB.hmget('config', 'theme:type', 'theme:id', 'theme:staticDir', 'theme:templates', function(err, themeData) {
@@ -701,6 +688,9 @@ var express = require('express'),
 			});
 		});
 
+		// Other routes
+		require('./routes/plugins')(app);
+
 		// Debug routes
 		if (process.env.NODE_ENV === 'development') {
 			require('./routes/debug')(app);