MainLifecycleStrategy.java

/**
 * 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.camel.main;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicBoolean;

import org.apache.camel.CamelContext;
import org.apache.camel.support.LifecycleStrategySupport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * A {@link org.apache.camel.spi.LifecycleStrategy} to trigger shutdown of the Main JVM
 * when {@link CamelContext} is stopped from JMX or its stop method is invoked from Java code.
 */
public class MainLifecycleStrategy extends LifecycleStrategySupport {

    private static final Logger LOG = LoggerFactory.getLogger(MainLifecycleStrategy.class);
    private final AtomicBoolean completed;
    private final CountDownLatch latch;

    public MainLifecycleStrategy(AtomicBoolean completed, CountDownLatch latch) {
        this.completed = completed;
        this.latch = latch;
    }

    @Override
    public void onContextStop(CamelContext context) {
        LOG.info("CamelContext: {} has been shutdown, triggering shutdown of the JVM.", context.getName());
        // trigger stopping the Main
        completed.set(true);
        latch.countDown();
    }
}