org.apache.zookeeper.server.ZooKeeperCriticalThread Maven / Gradle / Ivy
/*
* 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.zookeeper.server;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Represents critical thread. When there is an uncaught exception thrown by the
* thread this will exit the system.
*/
public class ZooKeeperCriticalThread extends ZooKeeperThread {
private static final Logger LOG = LoggerFactory.getLogger(ZooKeeperCriticalThread.class);
private final ZooKeeperServerListener listener;
public ZooKeeperCriticalThread(String threadName, ZooKeeperServerListener listener) {
super(threadName);
this.listener = listener;
}
/**
* This will be used by the uncaught exception handler and make the system
* exit.
*
* @param threadName
* - thread name
* @param e
* - exception object
*/
@Override
protected void handleException(String threadName, Throwable e) {
LOG.error("Severe unrecoverable error, from thread : {}", threadName, e);
listener.notifyStopping(threadName, ExitCode.UNEXPECTED_ERROR.getValue());
ServerMetrics.getMetrics().UNRECOVERABLE_ERROR_COUNT.add(1);
}
}