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.mina;
018    
019    import java.net.SocketAddress;
020    
021    import org.apache.camel.Exchange;
022    import org.apache.camel.impl.DefaultProducer;
023    import org.apache.commons.logging.Log;
024    import org.apache.commons.logging.LogFactory;
025    import org.apache.mina.common.ConnectFuture;
026    import org.apache.mina.common.IoConnector;
027    import org.apache.mina.common.IoHandler;
028    import org.apache.mina.common.IoHandlerAdapter;
029    import org.apache.mina.common.IoSession;
030    
031    /**
032     * A {@link Producer} implementation for MINA
033     * 
034     * @version $Revision: 563665 $
035     */
036    public class MinaProducer extends DefaultProducer {
037        private static final transient Log LOG = LogFactory.getLog(MinaProducer.class);
038        private IoSession session;
039        private MinaEndpoint endpoint;
040    
041        public MinaProducer(MinaEndpoint endpoint) {
042            super(endpoint);
043            this.endpoint = endpoint;
044        }
045    
046        public void process(Exchange exchange) {
047            if (session == null) {
048                throw new IllegalStateException("Not started yet!");
049            }
050            Object body = exchange.getIn().getBody();
051            if (body == null) {
052                LOG.warn("No payload for exchange: " + exchange);
053            } else {
054                session.write(body);
055            }
056        }
057    
058        @Override
059        protected void doStart() throws Exception {
060            SocketAddress address = endpoint.getAddress();
061            IoConnector connector = endpoint.getConnector();
062            if (LOG.isDebugEnabled()) {
063                LOG.debug("Creating connector to address: " + address + " using connector: " + connector);
064            }
065            IoHandler ioHandler = new IoHandlerAdapter() {
066                @Override
067                public void messageReceived(IoSession ioSession, Object object) throws Exception {
068                    super.messageReceived(ioSession, object);
069                    /** TODO */
070                }
071            };
072            ConnectFuture future = connector.connect(address, ioHandler, endpoint.getConfig());
073            future.join();
074            session = future.getSession();
075        }
076    
077        @Override
078        protected void doStop() throws Exception {
079            if (session != null) {
080                session.close().join(2000);
081            }
082        }
083    }