001
014
015 package com.liferay.portal.kernel.messaging;
016
017 import com.liferay.portal.kernel.cache.thread.local.Lifecycle;
018 import com.liferay.portal.kernel.cache.thread.local.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 setWorkersCoreSize(_WORKERS_CORE_SIZE);
038 setWorkersMaxSize(_WORKERS_MAX_SIZE);
039 }
040
041 @Override
042 protected void dispatch(
043 final Set<MessageListener> messageListeners, final Message message) {
044
045 final Thread currentThread = Thread.currentThread();
046
047 ThreadPoolExecutor threadPoolExecutor = getThreadPoolExecutor();
048
049 Runnable runnable = new MessageRunnable(message) {
050
051 @Override
052 public void run() {
053 try {
054 populateThreadLocalsFromMessage(message);
055
056 for (MessageListener messageListener : messageListeners) {
057 try {
058 messageListener.receive(message);
059 }
060 catch (MessageListenerException mle) {
061 _log.error(
062 "Unable to process message " + message, mle);
063 }
064 }
065 }
066 finally {
067 if (Thread.currentThread() != currentThread) {
068 ThreadLocalCacheManager.clearAll(Lifecycle.REQUEST);
069
070 CentralizedThreadLocal.clearShortLivedThreadLocals();
071 }
072 }
073 }
074
075 };
076
077 threadPoolExecutor.execute(runnable);
078 }
079
080 private static final int _WORKERS_CORE_SIZE = 1;
081
082 private static final int _WORKERS_MAX_SIZE = 1;
083
084 private static final Log _log = LogFactoryUtil.getLog(
085 SerialDestination.class);
086
087 }