| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package org.apache.myfaces.extensions.scripting.jsf.startup; |
| |
| import org.apache.myfaces.extensions.scripting.core.api.Plugin; |
| import org.apache.myfaces.extensions.scripting.core.api.WeavingContext; |
| import org.apache.myfaces.extensions.scripting.core.monitor.ResourceMonitor; |
| import org.apache.myfaces.extensions.scripting.jsf.adapters.MyFacesSPI; |
| import org.apache.myfaces.webapp.StartupListener; |
| |
| import javax.servlet.ServletContext; |
| import javax.servlet.ServletContextEvent; |
| import java.io.IOException; |
| import java.util.LinkedList; |
| import java.util.List; |
| import java.util.ServiceLoader; |
| import java.util.logging.Logger; |
| |
| /** |
| * @author Werner Punz (latest modification by $Author$) |
| * @version $Revision$ $Date$ |
| * <p/> |
| * serves the startup process |
| * the chainloader hooks itself into the myfaces init process |
| * and is responsible for startup of the daemon the |
| * initial scan and compile |
| */ |
| |
| public class StartupServletContextPluginChainLoader implements StartupListener |
| { |
| static final Logger _log = Logger.getLogger(StartupServletContextPluginChainLoader.class.getName()); |
| Plugin[] _plugins = new Plugin[]{}; |
| |
| public StartupServletContextPluginChainLoader() |
| { |
| ServiceLoader<Plugin> pluginLoader |
| = ServiceLoader.load(Plugin.class); |
| List<Plugin> plugins = new LinkedList<Plugin>(); |
| for (Plugin plugin : pluginLoader) |
| { |
| plugins.add(plugin); |
| } |
| _plugins = plugins.toArray(new Plugin[plugins.size()]); |
| } |
| |
| public void preInit(ServletContextEvent servletContextEvent) |
| { |
| ServletContext servletContext = servletContextEvent.getServletContext(); |
| try |
| { |
| startup(servletContext); |
| |
| for (Plugin plugin : _plugins) |
| { |
| plugin.preInit(servletContextEvent); |
| } |
| } |
| catch (IOException e) |
| { |
| _log.severe("[EXT-SCRIPTING] Engine startup failed terminating ext-scripting"); |
| } |
| |
| } |
| |
| public static void startup(ServletContext servletContext) throws IOException |
| { |
| if(ResourceMonitor.getInstance() != null && ResourceMonitor.getInstance().isAlive()) return; |
| |
| WeavingContext context = WeavingContext.getInstance(); |
| _log.info("[EXT-SCRIPTING] Instantiating StartupServletContextPluginChainLoader"); |
| context.initEngines(); |
| _log.info("[EXT-SCRIPTING] Loading configuration"); |
| context.getConfiguration().init(servletContext); |
| _log.info("[EXT-SCRIPTING] Loading Scripting end"); |
| _log.info("[EXT-SCRIPTING] initializing startup daemon"); |
| ResourceMonitor.init(servletContext); |
| _log.info("[EXT-SCRIPTING] initializing startup daemon end"); |
| _log.info("[EXT-SCRIPTING] Initial Scan and compile"); |
| //the initial scan should happen synchronsously |
| ResourceMonitor.getInstance().performMonitoringTask(); |
| _log.info("[EXT-SCRIPTING] Starting Change Monitor"); |
| ResourceMonitor.getInstance().start(); |
| _log.info("[EXT-SCRIPTING] Startup done"); |
| _log.info("[EXT-SCRIPTING] init the chain loader for class loading"); |
| //TODO make this more generic depending on the implementation |
| MyFacesSPI.getInstance().registerClassloadingExtension(servletContext); |
| _log.info("[EXT-SCRIPTING] registering the JSF Implementation"); |
| WeavingContext.getInstance().setImplementation(MyFacesSPI.getInstance()); |
| } |
| |
| public void postInit(ServletContextEvent evt) |
| { |
| //tell the system that the startup phase is done |
| WeavingContext.getInstance().markPostInit(); |
| for (Plugin plugin : _plugins) |
| { |
| plugin.postInit(evt); |
| } |
| } |
| |
| public void preDestroy(ServletContextEvent evt) |
| { |
| for (Plugin plugin : _plugins) |
| { |
| plugin.preDestroy(evt); |
| } |
| } |
| |
| public void postDestroy(ServletContextEvent evt) |
| { |
| //context is destroyed we have to shut down our daemon as well, by giving it |
| //a hint to shutdown |
| ResourceMonitor.getInstance().setRunning(false); |
| for (Plugin plugin : _plugins) |
| { |
| plugin.postDestroy(evt); |
| } |
| } |
| } |