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.xmpp;
018    
019    import java.util.Iterator;
020    
021    import org.apache.camel.Processor;
022    import org.apache.camel.impl.DefaultConsumer;
023    import org.apache.commons.logging.Log;
024    import org.apache.commons.logging.LogFactory;
025    
026    import org.jivesoftware.smack.PacketListener;
027    import org.jivesoftware.smack.packet.Message;
028    import org.jivesoftware.smack.packet.Packet;
029    import org.jivesoftware.smack.packet.RosterPacket;
030    
031    /**
032     * A {@link Consumer} which listens to XMPP packets
033     * 
034     * @version $Revision: 563665 $
035     */
036    public class XmppConsumer extends DefaultConsumer<XmppExchange> implements PacketListener {
037        private static final transient Log LOG = LogFactory.getLog(XmppConsumer.class);
038        private final XmppEndpoint endpoint;
039    
040        public XmppConsumer(XmppEndpoint endpoint, Processor processor) {
041            super(endpoint, processor);
042            this.endpoint = endpoint;
043        }
044    
045        @Override
046        protected void doStart() throws Exception {
047            super.doStart();
048            endpoint.getConnection().addPacketListener(this, endpoint.getFilter());
049        }
050    
051        @Override
052        protected void doStop() throws Exception {
053            endpoint.getConnection().removePacketListener(this);
054            super.doStop();
055        }
056    
057        public void processPacket(Packet packet) {
058    
059            if (packet instanceof Message) {
060                Message message = (Message)packet;
061                if (LOG.isDebugEnabled()) {
062                    LOG.debug("<<<< message: " + message.getBody());
063                }
064                XmppExchange exchange = endpoint.createExchange(message);
065                try {
066                    getProcessor().process(exchange);
067                } catch (Exception e) {
068                    // TODO: what should we do when a processing failure occurs??
069                    e.printStackTrace();
070                }
071            } else if (packet instanceof RosterPacket) {
072                RosterPacket rosterPacket = (RosterPacket)packet;
073                if (LOG.isDebugEnabled()) {
074                    LOG.debug("Roster packet with : " + rosterPacket.getRosterItemCount() + " item(s)");
075                    Iterator rosterItems = rosterPacket.getRosterItems();
076                    while (rosterItems.hasNext()) {
077                        Object item = rosterItems.next();
078                        LOG.debug("Roster item: " + item);
079                    }
080                }
081            } else {
082                if (LOG.isDebugEnabled()) {
083                    LOG.debug("<<<< ignored packet: " + packet);
084                }
085    
086            }
087        }
088    }