| /* |
| * Copyright 2014 gitblit.com. |
| * |
| * Licensed 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 com.gitblit.wicket; |
| |
| import java.io.IOException; |
| import java.net.URL; |
| import java.util.Enumeration; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.Set; |
| import java.util.TreeSet; |
| |
| import org.apache.wicket.WicketRuntimeException; |
| import org.apache.wicket.application.IClassResolver; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import ro.fortsoft.pf4j.PluginState; |
| import ro.fortsoft.pf4j.PluginWrapper; |
| |
| import com.gitblit.manager.IPluginManager; |
| |
| /** |
| * Resolves plugin classes and resources. |
| */ |
| public class PluginClassResolver implements IClassResolver { |
| private static final Logger logger = LoggerFactory.getLogger(PluginClassResolver.class); |
| |
| private final IClassResolver coreResolver; |
| private final IPluginManager pluginManager; |
| |
| public PluginClassResolver(IClassResolver coreResolver, IPluginManager pluginManager) { |
| this.coreResolver = coreResolver; |
| this.pluginManager = pluginManager; |
| } |
| |
| @Override |
| public Class<?> resolveClass(final String className) throws ClassNotFoundException { |
| boolean debugEnabled = logger.isDebugEnabled(); |
| |
| for (PluginWrapper plugin : pluginManager.getPlugins()) { |
| if (PluginState.STARTED != plugin.getPluginState()) { |
| // ignore this plugin |
| continue; |
| } |
| |
| try { |
| return plugin.getPluginClassLoader().loadClass(className); |
| } catch (ClassNotFoundException cnfx) { |
| if (debugEnabled) { |
| logger.debug("ClassResolver '{}' cannot find class: '{}'", plugin.getPluginId(), className); |
| } |
| } |
| } |
| |
| return coreResolver.resolveClass(className); |
| } |
| |
| @Override |
| public Iterator<URL> getResources(final String name) { |
| Set<URL> urls = new TreeSet<URL>(new UrlExternalFormComparator()); |
| |
| for (PluginWrapper plugin : pluginManager.getPlugins()) { |
| if (PluginState.STARTED != plugin.getPluginState()) { |
| // ignore this plugin |
| continue; |
| } |
| |
| Iterator<URL> it = getResources(name, plugin); |
| while (it.hasNext()) { |
| URL url = it.next(); |
| urls.add(url); |
| } |
| } |
| |
| Iterator<URL> it = coreResolver.getResources(name); |
| while (it.hasNext()) { |
| URL url = it.next(); |
| urls.add(url); |
| } |
| return urls.iterator(); |
| } |
| |
| protected Iterator<URL> getResources(String name, PluginWrapper plugin) { |
| HashSet<URL> loadedFiles = new HashSet<URL>(); |
| try { |
| // Try the classloader for the wicket jar/bundle |
| Enumeration<URL> resources = plugin.getPluginClassLoader().getResources(name); |
| loadResources(resources, loadedFiles); |
| } catch (IOException e) { |
| throw new WicketRuntimeException(e); |
| } |
| |
| return loadedFiles.iterator(); |
| } |
| |
| private void loadResources(Enumeration<URL> resources, Set<URL> loadedFiles) { |
| if (resources != null) { |
| while (resources.hasMoreElements()) { |
| final URL url = resources.nextElement(); |
| if (!loadedFiles.contains(url)) { |
| loadedFiles.add(url); |
| } |
| } |
| } |
| } |
| } |