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.management;
019    
020    import javax.jms.Message;
021    
022    /**
023     * A simple interface to allow statistics gathering to be easily switched out
024     * for performance reasons.
025     *
026     * @version $Revision: 1.1.1.1 $
027     */
028    public interface JMSDestinationStats {
029        /**
030         * On startup sets the pending message count
031         *
032         * @param count
033         */
034        public void setPendingMessageCountOnStartup(long count);
035    
036        /**
037         * On a message send to this destination, update the producing stats
038         *
039         * @param message
040         */
041        public void onMessageSend(Message message);
042    
043        /**
044         * On a consume from this destination, updates the consumed states
045         */
046        public void onMessageAck();
047    }