001    /**
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    package org.apache.camel.component.controlbus;
018    
019    import java.util.Map;
020    import java.util.concurrent.ExecutorService;
021    
022    import org.apache.camel.Endpoint;
023    import org.apache.camel.impl.UriEndpointComponent;
024    
025    /**
026     * The <a href="http://camel.apache.org/controlbus.html">control bus</a> component.
027     */
028    public class ControlBusComponent extends UriEndpointComponent {
029    
030        private ExecutorService executorService;
031    
032        public ControlBusComponent() {
033            super(ControlBusEndpoint.class);
034        }
035    
036        @Override
037        protected Endpoint createEndpoint(String uri, String remaining, Map<String, Object> parameters) throws Exception {
038            ControlBusEndpoint answer = new ControlBusEndpoint(uri, this);
039    
040            // does the control bus use a language
041            if (remaining != null && remaining.startsWith("language:")) {
042                String lan = remaining.substring(9);
043                if (lan != null) {
044                    answer.setLanguage(getCamelContext().resolveLanguage(lan));
045                } else {
046                    throw new IllegalArgumentException("Language must be configured in endpoint uri: " + uri);
047                }
048            }
049    
050            setProperties(answer, parameters);
051            return answer;
052        }
053    
054        synchronized ExecutorService getExecutorService() {
055            if (executorService == null) {
056                executorService = getCamelContext().getExecutorServiceManager().newDefaultThreadPool(this, "ControlBus");
057            }
058            return executorService;
059        }
060    
061        @Override
062        protected void doStop() throws Exception {
063            if (executorService != null) {
064                getCamelContext().getExecutorServiceManager().shutdownNow(executorService);
065                executorService = null;
066            }
067            super.doStop();
068        }
069    }