001
014
015 package com.liferay.portal.kernel.messaging;
016
017 import com.liferay.portal.kernel.cache.Lifecycle;
018 import com.liferay.portal.kernel.cache.ThreadLocalCacheManager;
019 import com.liferay.portal.kernel.concurrent.ThreadPoolExecutor;
020 import com.liferay.portal.kernel.log.Log;
021 import com.liferay.portal.kernel.log.LogFactoryUtil;
022 import com.liferay.portal.kernel.util.CentralizedThreadLocal;
023
024 import java.util.Set;
025
026
034 public class SerialDestination extends BaseAsyncDestination {
035
036 public SerialDestination() {
037 super();
038
039 setWorkersCoreSize(_WORKERS_CORE_SIZE);
040 setWorkersMaxSize(_WORKERS_MAX_SIZE);
041 }
042
043
046 public SerialDestination(String name) {
047 super(name, _WORKERS_CORE_SIZE, _WORKERS_MAX_SIZE);
048 }
049
050 @Override
051 protected void dispatch(
052 final Set<MessageListener> messageListeners, final Message message) {
053
054 final Thread currentThread = Thread.currentThread();
055
056 ThreadPoolExecutor threadPoolExecutor = getThreadPoolExecutor();
057
058 Runnable runnable = new MessageRunnable(message) {
059
060 @Override
061 public void run() {
062 try {
063 populateThreadLocalsFromMessage(message);
064
065 for (MessageListener messageListener : messageListeners) {
066 try {
067 messageListener.receive(message);
068 }
069 catch (MessageListenerException mle) {
070 _log.error(
071 "Unable to process message " + message, mle);
072 }
073 }
074 }
075 finally {
076 if (Thread.currentThread() != currentThread) {
077 ThreadLocalCacheManager.clearAll(Lifecycle.REQUEST);
078
079 CentralizedThreadLocal.clearShortLivedThreadLocals();
080 }
081 }
082 }
083
084 };
085
086 threadPoolExecutor.execute(runnable);
087 }
088
089 private static final int _WORKERS_CORE_SIZE = 1;
090
091 private static final int _WORKERS_MAX_SIZE = 1;
092
093 private static Log _log = LogFactoryUtil.getLog(SerialDestination.class);
094
095 }