001    /** 
002     * 
003     * Copyright 2004 Protique Ltd
004     * 
005     * Licensed under the Apache License, Version 2.0 (the "License"); 
006     * you may not use this file except in compliance with the License. 
007     * 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     **/
018    package org.activemq.transport;
019    
020    /**
021     * A listener of services being added or removed from a nework
022     *
023     * @version $Revision: 1.1.1.1 $
024     */
025    public interface DiscoveryListener {
026    
027        /**
028         * A service has started
029         * @param event
030         */
031        public void addService(DiscoveryEvent event);
032    
033        /**
034         * A service has stopped
035         * @param event
036         */
037        public void removeService(DiscoveryEvent event);
038    }