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 org.apache.camel.Processor;
020 import org.apache.camel.impl.DefaultConsumer;
021 import org.apache.commons.logging.Log;
022 import org.apache.commons.logging.LogFactory;
023 import org.jivesoftware.smack.Chat;
024 import org.jivesoftware.smack.MessageListener;
025 import org.jivesoftware.smack.PacketListener;
026 import org.jivesoftware.smack.SmackConfiguration;
027 import org.jivesoftware.smack.XMPPConnection;
028 import org.jivesoftware.smack.packet.Message;
029 import org.jivesoftware.smack.packet.Packet;
030 import org.jivesoftware.smackx.muc.DiscussionHistory;
031 import org.jivesoftware.smackx.muc.MultiUserChat;
032
033 /**
034 * A {@link org.apache.camel.Consumer Consumer} which listens to XMPP packets
035 *
036 * @version $Revision: 759035 $
037 */
038 public class XmppConsumer extends DefaultConsumer<XmppExchange> implements PacketListener, MessageListener {
039 private static final transient Log LOG = LogFactory.getLog(XmppConsumer.class);
040 private final XmppEndpoint endpoint;
041 private MultiUserChat muc;
042 private XMPPConnection connection;
043
044 public XmppConsumer(XmppEndpoint endpoint, Processor processor) {
045 super(endpoint, processor);
046 this.endpoint = endpoint;
047 }
048
049 @Override
050 protected void doStart() throws Exception {
051 connection = endpoint.createConnection();
052
053 if (endpoint.getRoom() == null) {
054 Chat privateChat = connection.getChatManager().createChat(endpoint.getParticipant(), this);
055 if (LOG.isInfoEnabled()) {
056 LOG.info("Open private chat to: " + privateChat.getParticipant());
057 }
058 } else {
059 muc = new MultiUserChat(connection, endpoint.resolveRoom(connection));
060 muc.addMessageListener(this);
061 DiscussionHistory history = new DiscussionHistory();
062 history.setMaxChars(0); // we do not want any historical messages
063
064 muc.join(endpoint.getNickname(), null, history, SmackConfiguration.getPacketReplyTimeout());
065 if (LOG.isInfoEnabled()) {
066 LOG.info("Joined room: " + muc.getRoom() + " as: " + endpoint.getNickname());
067 }
068 }
069
070 super.doStart();
071 }
072
073 @Override
074 protected void doStop() throws Exception {
075 super.doStop();
076 if (muc != null) {
077 if (LOG.isInfoEnabled()) {
078 LOG.info("Leaving room: " + muc.getRoom());
079 }
080 muc.removeMessageListener(this);
081 muc.leave();
082 muc = null;
083 }
084 if (connection != null) {
085 if (LOG.isDebugEnabled()) {
086 LOG.debug("Disconnecting from: " + XmppEndpoint.getConnectionMessage(connection));
087 }
088 connection.disconnect();
089 connection = null;
090 }
091 }
092
093 public void processPacket(Packet packet) {
094 Message message = (Message)packet;
095
096 if (LOG.isDebugEnabled()) {
097 LOG.debug("Recieved XMPP message: " + message.getBody());
098 }
099
100 XmppExchange exchange = endpoint.createExchange(message);
101 try {
102 getProcessor().process(exchange);
103 if (muc != null) {
104 // must invoke nextMessage to consume the response from the server
105 // otherwise the client local queue will fill up (CAMEL-1467)
106 muc.nextMessage();
107 }
108 } catch (Exception e) {
109 LOG.error("Error while processing XMPP message", e);
110 }
111 }
112
113 public void processMessage(Chat chat, Message message) {
114 processPacket(message);
115 }
116
117 }