ControlBusComponent.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.component.controlbus;

import java.util.Map;
import java.util.concurrent.ExecutorService;

import org.apache.camel.Endpoint;
import org.apache.camel.impl.UriEndpointComponent;

/**
 * The <a href="http://camel.apache.org/controlbus.html">Control Bus component</a> allows sending messages to a control-bus endpoint to control the lifecycle of routes.
 */
public class ControlBusComponent extends UriEndpointComponent {

    private ExecutorService executorService;

    public ControlBusComponent() {
        super(ControlBusEndpoint.class);
    }

    @Override
    protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
        ControlBusEndpoint answer = new ControlBusEndpoint(uri, this);

        // does the control bus use a language
        if (remaining != null && remaining.startsWith("language:")) {
            String lan = remaining.substring(9);
            answer.setLanguage(getCamelContext().resolveLanguage(lan));
        }

        setProperties(answer, parameters);
        return answer;
    }

    synchronized ExecutorService getExecutorService() {
        if (executorService == null) {
            executorService = getCamelContext().getExecutorServiceManager().newDefaultThreadPool(this, "ControlBus");
        }
        return executorService;
    }

    @Override
    protected void doStop() throws Exception {
        if (executorService != null) {
            getCamelContext().getExecutorServiceManager().shutdownNow(executorService);
            executorService = null;
        }
        super.doStop();
    }
}