/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.camel.component.xmpp;
import org.apache.camel.Exchange;
import org.apache.camel.RuntimeExchangeException;
import org.apache.camel.impl.DefaultProducer;
import org.jivesoftware.smack.SmackConfiguration;
import org.jivesoftware.smack.XMPPConnection;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smackx.muc.DiscussionHistory;
import org.jivesoftware.smackx.muc.MultiUserChat;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @version
*/
public class XmppGroupChatProducer extends DefaultProducer {
private static final Logger LOG = LoggerFactory.getLogger(XmppGroupChatProducer.class);
private final XmppEndpoint endpoint;
private XMPPConnection connection;
private MultiUserChat chat;
private String room;
public XmppGroupChatProducer(XmppEndpoint endpoint) throws XMPPException {
super(endpoint);
this.endpoint = endpoint;
}
public void process(Exchange exchange) {
if (connection == null) {
try {
connection = endpoint.createConnection();
} catch (XMPPException e) {
throw new RuntimeExchangeException("Could not connect to XMPP server.", exchange, e);
}
}
if (chat == null) {
try {
initializeChat();
} catch (Exception e) {
throw new RuntimeExchangeException("Could not initialize XMPP chat.", exchange, e);
}
}
Message message = chat.createMessage();
message.setTo(room);
message.setFrom(endpoint.getUser());
endpoint.getBinding().populateXmppMessage(message, exchange);
try {
// make sure we are connected
if (!connection.isConnected()) {
this.reconnect();
}
if (LOG.isDebugEnabled()) {
LOG.debug("Sending XMPP message: {}", message.getBody());
}
chat.sendMessage(message);
// must invoke nextMessage to consume the response from the server
// otherwise the client local queue will fill up (CAMEL-1467)
chat.pollMessage();
} catch (XMPPException e) {
throw new RuntimeExchangeException("Could not send XMPP message: " + message, exchange, e);
}
}
private synchronized void reconnect() throws XMPPException {
if (!connection.isConnected()) {
if (LOG.isDebugEnabled()) {
LOG.debug("Reconnecting to: {}", XmppEndpoint.getConnectionMessage(connection));
}
connection.connect();
}
}
@Override
protected void doStart() throws Exception {
if (connection == null) {
try {
connection = endpoint.createConnection();
} catch (XMPPException e) {
if (endpoint.isTestConnectionOnStartup()) {
throw new RuntimeException("Could not connect to XMPP server: " + endpoint.getConnectionDescription(), e);
} else {
LOG.warn("Could not connect to XMPP server. {} Producer will attempt lazy connection when needed.", XmppEndpoint.getXmppExceptionLogMessage(e));
}
}
}
if (chat == null && connection != null) {
initializeChat();
}
super.doStart();
}
protected synchronized void initializeChat() throws XMPPException {
if (chat == null) {
room = endpoint.resolveRoom(connection);
chat = new MultiUserChat(connection, room);
DiscussionHistory history = new DiscussionHistory();
history.setMaxChars(0); // we do not want any historical messages
chat.join(endpoint.getNickname(), null, history, SmackConfiguration.getPacketReplyTimeout());
if (LOG.isInfoEnabled()) {
LOG.info("Joined room: {} as: {}", room, endpoint.getNickname());
}
}
}
@Override
protected void doStop() throws Exception {
if (chat != null) {
LOG.info("Leaving room: {}", room);
chat.leave();
}
chat = null;
if (connection != null && connection.isConnected()) {
connection.disconnect();
}
connection = null;
super.doStop();
}
// Properties
// -------------------------------------------------------------------------
public String getRoom() {
return room;
}
}