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.plugin; 018 019 import org.apache.activemq.broker.Broker; 020 import org.apache.activemq.broker.BrokerPlugin; 021 import org.slf4j.Logger; 022 import org.slf4j.LoggerFactory; 023 024 /** 025 * A StatisticsBrokerPlugin 026 * You can retrieve a Map Message for a Destination - or 027 * Broker containing statistics as key-value pairs The message must contain a 028 * replyTo Destination - else its ignored 029 * To retrieve stats on the broker send a empty message to ActiveMQ.Statistics.Broker (Queue or Topic) 030 * With a replyTo set to the destination you want the stats returned to. 031 * To retrieve stats for a destination - e.g. foo - send an empty message to ActiveMQ.Statistics.Destination.foo 032 * - this works with wildcards to - you get a message for each wildcard match on the replyTo destination. 033 * The stats message is a MapMessage populated with statistics for the target 034 * @org.apache.xbean.XBean element="statisticsBrokerPlugin" 035 * 036 */ 037 public class StatisticsBrokerPlugin implements BrokerPlugin { 038 private static Logger LOG = LoggerFactory.getLogger(StatisticsBrokerPlugin.class); 039 /** 040 * @param broker 041 * @return the plug-in 042 * @throws Exception 043 * @see org.apache.activemq.broker.BrokerPlugin#installPlugin(org.apache.activemq.broker.Broker) 044 */ 045 public Broker installPlugin(Broker broker) throws Exception { 046 StatisticsBroker answer = new StatisticsBroker(broker); 047 LOG.info("Installing StaticsBroker"); 048 return answer; 049 } 050 }