org.apache.flink.runtime.util.ExecutorThreadFactory Maven / Gradle / Ivy
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* 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.flink.runtime.util;
import java.util.concurrent.ThreadFactory;
import java.util.concurrent.atomic.AtomicInteger;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class ExecutorThreadFactory implements ThreadFactory {
private static final Logger LOG = LoggerFactory.getLogger(ExecutorThreadFactory.class);
private static final String THREAD_NAME_PREFIX = "Flink Executor Thread - ";
private static final AtomicInteger COUNTER = new AtomicInteger(1);
private static final ThreadGroup THREAD_GROUP = new ThreadGroup("Flink Executor Threads");
private static final Thread.UncaughtExceptionHandler EXCEPTION_HANDLER = new LoggingExceptionHander();
public static final ExecutorThreadFactory INSTANCE = new ExecutorThreadFactory();
// --------------------------------------------------------------------------------------------
private ExecutorThreadFactory() {}
public Thread newThread(Runnable target) {
Thread t = new Thread(THREAD_GROUP, target, THREAD_NAME_PREFIX + COUNTER.getAndIncrement());
t.setDaemon(true);
t.setUncaughtExceptionHandler(EXCEPTION_HANDLER);
return t;
}
// --------------------------------------------------------------------------------------------
private static final class LoggingExceptionHander implements Thread.UncaughtExceptionHandler {
@Override
public void uncaughtException(Thread t, Throwable e) {
if (LOG.isErrorEnabled()) {
LOG.error("Thread '" + t.getName() + "' produced an uncaught exception.", e);
}
}
}
}