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.activemq.transport.discovery.multicast;
018    
019    import java.io.IOException;
020    import java.net.URI;
021    import java.util.Map;
022    
023    import org.apache.activemq.transport.discovery.DiscoveryAgent;
024    import org.apache.activemq.transport.discovery.DiscoveryAgentFactory;
025    import org.apache.activemq.util.IOExceptionSupport;
026    import org.apache.activemq.util.IntrospectionSupport;
027    import org.apache.activemq.util.URISupport;
028    import org.slf4j.Logger;
029    import org.slf4j.LoggerFactory;
030    
031    public class MulticastDiscoveryAgentFactory extends DiscoveryAgentFactory {
032            
033              private static final Logger LOG = LoggerFactory.getLogger(MulticastDiscoveryAgentFactory.class); 
034    
035        
036        protected DiscoveryAgent doCreateDiscoveryAgent(URI uri) throws IOException {
037            try {
038                    
039                      if (LOG.isTraceEnabled()) {      
040                   LOG.trace("doCreateDiscoveryAgent: uri = " + uri.toString());               
041                }
042                
043                MulticastDiscoveryAgent mda = new MulticastDiscoveryAgent();          
044                
045                mda.setDiscoveryURI(uri);            
046                            
047                // allow MDA's params to be set via query arguments  
048                // (e.g., multicast://default?group=foo             
049                Map options = URISupport.parseParameters(uri);         
050                IntrospectionSupport.setProperties(mda, options);
051                
052                return mda;
053                
054            } catch (Throwable e) {
055                throw IOExceptionSupport.create("Could not create discovery agent: " + uri, e);
056            }
057        }
058    }