| /** |
| * 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.wss4j.common.cache; |
| |
| import java.io.File; |
| import java.io.IOException; |
| import java.lang.reflect.Method; |
| import java.net.URL; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| import net.sf.ehcache.CacheException; |
| import net.sf.ehcache.CacheManager; |
| import net.sf.ehcache.config.CacheConfiguration; |
| import net.sf.ehcache.config.Configuration; |
| import net.sf.ehcache.config.ConfigurationFactory; |
| |
| import org.apache.wss4j.common.util.Loader; |
| |
| /** |
| * We need to reference count the EHCacheManager things |
| */ |
| public final class EHCacheManagerHolder { |
| private static final org.slf4j.Logger LOG = |
| org.slf4j.LoggerFactory.getLogger(EHCacheManagerHolder.class); |
| private static final ConcurrentHashMap<String, AtomicInteger> COUNTS |
| = new ConcurrentHashMap<String, AtomicInteger>(8, 0.75f, 2); |
| |
| private static Method cacheManagerCreateMethodNoArg; |
| private static Method createMethodURLArg; |
| private static Method cacheManagerCreateMethodConfigurationArg; |
| static { |
| // these methods are either completely available or absent (valid assumption from ehcache 2.5.0 to 2.7.2 so far) |
| try { |
| // from 2.5.2 |
| cacheManagerCreateMethodNoArg = CacheManager.class.getMethod("newInstance", (Class<?>[])null); |
| createMethodURLArg = CacheManager.class.getMethod("newInstance", URL.class); |
| cacheManagerCreateMethodConfigurationArg = CacheManager.class.getMethod("newInstance", Configuration.class); |
| } catch (NoSuchMethodException e) { |
| try { |
| // before 2.5.2 |
| cacheManagerCreateMethodNoArg = CacheManager.class.getMethod("create", (Class<?>[])null); |
| createMethodURLArg = CacheManager.class.getMethod("create", URL.class); |
| cacheManagerCreateMethodConfigurationArg = CacheManager.class.getMethod("create", Configuration.class); |
| } catch (Throwable t) { |
| // ignore |
| LOG.warn(t.getMessage()); |
| } |
| } |
| } |
| |
| private EHCacheManagerHolder() { |
| //utility |
| } |
| |
| |
| public static CacheConfiguration getCacheConfiguration(String key, |
| CacheManager cacheManager) { |
| CacheConfiguration cc = cacheManager.getConfiguration().getCacheConfigurations().get(key); |
| if (cc == null && key.contains("-")) { |
| cc = cacheManager.getConfiguration().getCacheConfigurations().get( |
| key.substring(0, key.lastIndexOf('-'))); |
| } |
| if (cc == null) { |
| cc = cacheManager.getConfiguration().getDefaultCacheConfiguration(); |
| } |
| if (cc == null) { |
| cc = new CacheConfiguration(); |
| } else { |
| cc = (CacheConfiguration)cc.clone(); |
| } |
| cc.setName(key); |
| return cc; |
| } |
| |
| public static synchronized CacheManager getCacheManager(String confName, URL configFileURL) { |
| CacheManager cacheManager = null; |
| if (configFileURL == null) { |
| //using the default |
| cacheManager = findDefaultCacheManager(confName); |
| } |
| if (cacheManager == null) { |
| if (configFileURL == null) { |
| cacheManager = createCacheManager(); |
| } else { |
| cacheManager = findDefaultCacheManager(confName, configFileURL); |
| } |
| } |
| AtomicInteger a = COUNTS.get(cacheManager.getName()); |
| if (a == null) { |
| COUNTS.putIfAbsent(cacheManager.getName(), new AtomicInteger()); |
| a = COUNTS.get(cacheManager.getName()); |
| } |
| a.incrementAndGet(); |
| // if (a.incrementAndGet() == 1) { |
| //System.out.println("Create!! " + cacheManager.getName()); |
| // } |
| return cacheManager; |
| } |
| |
| private static CacheManager findDefaultCacheManager(String confName) { |
| |
| String defaultConfigFile = "/wss4j-ehcache.xml"; |
| URL configFileURL = null; |
| try { |
| configFileURL = Loader.getResource(defaultConfigFile); |
| if (configFileURL == null) { |
| configFileURL = new URL(defaultConfigFile); |
| } |
| } catch (IOException e) { |
| // Do nothing |
| LOG.debug(e.getMessage()); |
| } |
| return findDefaultCacheManager(confName, configFileURL); |
| } |
| |
| private static CacheManager findDefaultCacheManager(String confName, URL configFileURL) { |
| try { |
| Configuration conf = ConfigurationFactory.parseConfiguration(configFileURL); |
| conf.setName(confName); |
| if ("java.io.tmpdir".equals(conf.getDiskStoreConfiguration().getOriginalPath())) { |
| String path = conf.getDiskStoreConfiguration().getPath() + File.separator |
| + confName; |
| conf.getDiskStoreConfiguration().setPath(path); |
| } |
| return createCacheManager(conf); |
| } catch (Throwable t) { |
| return null; |
| } |
| } |
| |
| |
| public static synchronized void releaseCacheManger(CacheManager cacheManager) { |
| AtomicInteger a = COUNTS.get(cacheManager.getName()); |
| if (a == null) { |
| return; |
| } |
| if (a.decrementAndGet() == 0) { |
| //System.out.println("Shutdown!! " + cacheManager.getName()); |
| cacheManager.shutdown(); |
| } |
| } |
| |
| static CacheManager createCacheManager() throws CacheException { |
| try { |
| return (CacheManager)cacheManagerCreateMethodNoArg.invoke(null, (Object[])null); |
| } catch (Exception e) { |
| throw new CacheException(e); |
| } |
| } |
| |
| static CacheManager createCacheManager(URL url) throws CacheException { |
| try { |
| return (CacheManager)createMethodURLArg.invoke(null, new Object[]{url}); |
| } catch (Exception e) { |
| throw new CacheException(e); |
| } |
| } |
| |
| static CacheManager createCacheManager(Configuration conf) throws CacheException { |
| try { |
| return (CacheManager)cacheManagerCreateMethodConfigurationArg.invoke(null, new Object[]{conf}); |
| } catch (Exception e) { |
| throw new CacheException(e); |
| } |
| } |
| } |