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.irc;
018    
019    import java.net.URI;
020    import java.util.HashMap;
021    import java.util.Map;
022    
023    import org.apache.camel.CamelContext;
024    import org.apache.camel.RuntimeCamelException;
025    import org.apache.camel.impl.DefaultComponent;
026    import org.apache.camel.util.IntrospectionSupport;
027    import org.apache.commons.logging.Log;
028    import org.apache.commons.logging.LogFactory;
029    
030    import org.schwering.irc.lib.IRCConnection;
031    
032    /**
033     * Defines the <a href="http://activemq.apache.org/camel/irc.html">IRC Component</a>
034     * 
035     * @version $Revision:$
036     */
037    public class IrcComponent extends DefaultComponent<IrcExchange> {
038        private static final transient Log LOG = LogFactory.getLog(IrcComponent.class);
039        private IrcConfiguration configuration;
040        private final Map<String, IRCConnection> connectionCache = new HashMap<String, IRCConnection>();
041    
042        public IrcComponent() {
043            configuration = new IrcConfiguration();
044        }
045    
046        public IrcComponent(IrcConfiguration configuration) {
047            this.configuration = configuration;
048        }
049    
050        public IrcComponent(CamelContext context) {
051            super(context);
052            configuration = new IrcConfiguration();
053        }
054    
055        public static IrcComponent ircComponent() {
056            return new IrcComponent();
057        }
058    
059        protected IrcEndpoint createEndpoint(String uri, String remaining, Map parameters) throws Exception {
060            IrcConfiguration config = getConfiguration().copy();
061            config.configure(new URI(uri));
062    
063            // lets make sure we copy the configuration as each endpoint can
064            // customize its own version
065            final IrcEndpoint endpoint = new IrcEndpoint(uri, this, config);
066    
067            IntrospectionSupport.setProperties(endpoint.getConfiguration(), parameters);
068            return endpoint;
069        }
070    
071        public IrcConfiguration getConfiguration() {
072            return configuration;
073        }
074    
075        public void setConfiguration(IrcConfiguration configuration) {
076            this.configuration = configuration;
077        }
078    
079        public synchronized IRCConnection getIRCConnection(IrcConfiguration configuration) {
080            final IRCConnection connection;
081            if (connectionCache.containsKey(configuration.getCacheKey())) {
082                if (LOG.isDebugEnabled()) {
083                    LOG.debug("Returning Cached Connection to " + configuration.getHostname() + " " + configuration.getTarget());
084                }
085                connection = connectionCache.get(configuration.getCacheKey());
086            } else {
087                connection = createConnection(configuration);
088                connectionCache.put(configuration.getCacheKey(), connection);
089            }
090            return connection;
091        }
092    
093        protected IRCConnection createConnection(IrcConfiguration configuration) {
094            LOG.debug("Creating Connection to " + configuration.getHostname() + " destination: " + configuration.getTarget() + " nick: " + configuration.getNickname() + " user: "
095                      + configuration.getUsername());
096    
097            final IRCConnection conn = new IRCConnection(configuration.getHostname(), configuration.getPorts(), configuration.getPassword(), configuration.getNickname(), configuration.getUsername(),
098                                                         configuration.getRealname());
099            conn.setEncoding("UTF-8");
100            // conn.setDaemon(true);
101            conn.setColors(configuration.isColors());
102            conn.setPong(true);
103    
104            try {
105                conn.connect();
106            } catch (Exception e) {
107                LOG.error("Failed to connect: " + e, e);
108    
109                // TODO use checked exceptions?
110                throw new RuntimeCamelException(e);
111            }
112            return conn;
113        }
114    
115        public void closeConnection(String key, IRCConnection connection) {
116            try {
117                connection.doQuit();
118                connection.close();
119            } catch (Exception e) {
120                e.printStackTrace();
121            }
122        }
123    
124        @Override
125        protected synchronized void doStop() throws Exception {
126            // lets use a copy so we can clear the connections eagerly in case of
127            // exceptions
128            Map<String, IRCConnection> map = new HashMap<String, IRCConnection>(connectionCache);
129            connectionCache.clear();
130            for (Map.Entry<String, IRCConnection> entry : map.entrySet()) {
131                closeConnection(entry.getKey(), entry.getValue());
132            }
133            super.doStop();
134        }
135    }