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package com.sun.ejb.containers;
import com.sun.enterprise.deployment.xml.RuntimeTagNames;
import com.sun.enterprise.transaction.api.JavaEETransactionManager;
import javax.transaction.Status;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.Callable;
import java.util.concurrent.RunnableFuture;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.logging.Logger;
public class EjbThreadPoolExecutor extends ThreadPoolExecutor {
public EjbThreadPoolExecutor(int corePoolSize, int maximumPoolSize,
long keepAliveTime, BlockingQueue<Runnable> workQueue, String threadPoolName) {
super(corePoolSize, maximumPoolSize, keepAliveTime, TimeUnit.SECONDS, workQueue,
new ThreadFactoryImpl(threadPoolName));
}
/**
* Ensure that we give out our EjbFutureTask as opposed to JDK's FutureTask
* @param callable
* @return a RunnableFuture
*/
@Override
protected <T> RunnableFuture<T> newTaskFor(Callable<T> callable) {
if (callable instanceof EjbAsyncTask) {
return ((EjbAsyncTask) callable).getFutureTask();
}
return super.newTaskFor(callable);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder("EjbThreadPoolExecutor with ");
sb.append(RuntimeTagNames.THREAD_CORE_POOL_SIZE).append(" ").append(getCorePoolSize()).append(" ");
sb.append(RuntimeTagNames.THREAD_MAX_POOL_SIZE).append(" ").append(getMaximumPoolSize()).append(" ");
sb.append(RuntimeTagNames.THREAD_KEEP_ALIVE_SECONDS).append(" ").append(getKeepAliveTime(TimeUnit.SECONDS)).append(" ");
sb.append(RuntimeTagNames.THREAD_QUEUE_CAPACITY).append(" ").append(getQueue().remainingCapacity()).append(" ");
sb.append(RuntimeTagNames.ALLOW_CORE_THREAD_TIMEOUT).append(" ").append(allowsCoreThreadTimeOut()).append(" ");
return sb.toString();
}
@Override
protected void afterExecute(Runnable r, Throwable t) {
super.afterExecute(r, t);
try {
JavaEETransactionManager tm = EjbContainerUtilImpl.getInstance().getTransactionManager();
if (tm.getTransaction() != null) {
int st = tm.getStatus();
Logger logger = EjbContainerUtilImpl.getLogger();
logger.warning("NON-NULL TX IN AFTER_EXECUTE. TX STATUS: " + st);
if (st == Status.STATUS_ROLLEDBACK || st == Status.STATUS_COMMITTED ||
st == Status.STATUS_UNKNOWN) {
tm.clearThreadTx();
} else {
tm.rollback();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
private static class ThreadFactoryImpl implements ThreadFactory {
private AtomicInteger threadId = new AtomicInteger(0);
private String threadPoolName;
public ThreadFactoryImpl(String threadPoolName) {
this.threadPoolName = threadPoolName;
}
public Thread newThread(Runnable r) {
Thread th = new Thread(r, threadPoolName + threadId.incrementAndGet());
th.setDaemon(true);
th.setContextClassLoader(null); //Prevent any app classloader being set as CCL
return th;
}
}
}