| /* |
| * 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.servlet; |
| |
| import org.apache.myfaces.extensions.scripting.api.ScriptingConst; |
| import org.apache.myfaces.extensions.scripting.core.util.ClassUtils; |
| import org.apache.myfaces.extensions.scripting.core.util.WeavingContext; |
| import org.apache.myfaces.extensions.scripting.refresh.RefreshContext; |
| import org.apache.myfaces.webapp.StartupListener; |
| |
| import javax.servlet.ServletContext; |
| import javax.servlet.ServletContextEvent; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicInteger; |
| import java.util.logging.Logger; |
| |
| /** |
| * Note, since MyFaces 1.2.8 we have a startup and shutdown event system |
| * which allows us to to hook event listener on servlet level before JSF is initialized |
| * and after it is destroyed (and of course in the phases in between) |
| * <p/> |
| * We use this to start our scripting engine and to hook in our class loading |
| * facilities before MyFaces performs its startup routines. |
| * |
| * @author Werner Punz |
| */ |
| public class StartupServletContextPluginChainLoader implements StartupListener { |
| final Logger _log = Logger.getLogger(this.getClass().getName()); |
| |
| public void preInit(ServletContextEvent servletContextEvent) { |
| |
| _log.info("[EXT-SCRIPTING] Instantiating StartupServletContextPluginChainLoader"); |
| |
| ServletContext servletContext = servletContextEvent.getServletContext(); |
| if (servletContext == null) return; |
| |
| servletContext.setAttribute(ScriptingConst.CTX_ATTR_REQUEST_CNT, new AtomicInteger(0)); |
| servletContext.setAttribute(ScriptingConst.CTX_ATTR_STARTUP, new AtomicBoolean(Boolean.TRUE)); |
| |
| initContext(servletContext); |
| initChainLoader(servletContext); |
| String initialCompileAndScan = (String) servletContext.getInitParameter(ScriptingConst.INIT_PARAM_INITIAL_COMPILE); |
| if(WeavingContext.isScriptingEnabled() && WeavingContext.getConfiguration().isInitialCompile()) { |
| initCompileAndScan(); |
| } else if(!WeavingContext.getConfiguration().isInitialCompile()) { |
| WeavingContext.getWeaver().markAsFullyRecompiled(); |
| } |
| } |
| |
| private void initCompileAndScan() { |
| if (WeavingContext.isScriptingEnabled()) { |
| _log.info("[EXT-SCRIPTING] Compiling all sources for the first time"); |
| //WeavingContext.getWeaver().postStartupActions(); |
| WeavingContext.getWeaver().fullRecompile(); |
| } |
| } |
| |
| /** |
| * initializes our custom chain loader which gets plugged into |
| * the MyFaces loading part for classes! |
| * |
| * @param servletContext the servlet context to be passed down |
| * @return the custom chain loader for loading our classes over our classloaders |
| */ |
| private CustomChainLoader initChainLoader(ServletContext servletContext) { |
| CustomChainLoader loader = new CustomChainLoader(servletContext); |
| ClassUtils.addClassLoadingExtension(loader, true); |
| return loader; |
| } |
| |
| /** |
| * initializes the central config storage! |
| * |
| * @param servletContext the applications servlet context |
| */ |
| private void initContext(ServletContext servletContext) { |
| WeavingContext.startup(servletContext); |
| } |
| |
| public void postInit(ServletContextEvent evt) { |
| //tell the system that the startup phase is done |
| WeavingContext.getWeaver().fullClassScan(); |
| evt.getServletContext().setAttribute(ScriptingConst.CTX_ATTR_STARTUP, new AtomicBoolean(Boolean.FALSE)); |
| } |
| |
| public void preDestroy(ServletContextEvent 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 |
| |
| //TODO this is probably not needed because we run in a daemon thread anyway |
| //so the servlet should not have a problem to shut it down externally |
| RefreshContext rContext = (RefreshContext) evt.getServletContext().getAttribute("RefreshContext"); |
| rContext.getDaemon().setRunning(false); |
| } |
| |
| } |