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.exec;
018    
019    import org.apache.camel.Exchange;
020    import org.apache.camel.impl.DefaultProducer;
021    import org.apache.camel.util.ObjectHelper;
022    import org.apache.commons.logging.Log;
023    import org.apache.commons.logging.LogFactory;
024    
025    /**
026     * Exec producer.
027     * 
028     * @see {link Producer}
029     */
030    public class ExecProducer extends DefaultProducer {
031    
032        private final Log log;
033    
034        private final ExecEndpoint endpoint;
035    
036        public ExecProducer(ExecEndpoint endpoint) {
037            super(endpoint);
038            this.endpoint = endpoint;
039            this.log = LogFactory.getLog(ExecProducer.class);
040        }
041    
042        public void process(Exchange exchange) throws Exception {
043            ExecCommand execCommand = getBinding().readInput(exchange, endpoint);
044    
045            if (log.isInfoEnabled()) {
046                log.info("Executing " + execCommand);
047            }
048            ExecResult result = endpoint.getCommandExecutor().execute(execCommand);
049            ObjectHelper.notNull(result, "The command executor must return a not-null result");
050            if (log.isInfoEnabled()) {
051                log.info("The command " + execCommand + " had exit value " + result.getExitValue());
052            } else if (log.isErrorEnabled() && result.getExitValue() != 0) {
053                log.error("The command " + execCommand + " returned exit value " + result.getExitValue());
054            }
055            getBinding().writeOutput(exchange, result);
056        }
057    
058        private ExecBinding getBinding() {
059            return endpoint.getBinding();
060        }
061    }