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 */
017package org.apache.activemq.plugin;
018
019import java.util.ArrayList;
020import java.util.StringTokenizer;
021import java.util.regex.Pattern;
022
023import org.apache.activemq.broker.Broker;
024import org.apache.activemq.broker.BrokerPlugin;
025import org.slf4j.Logger;
026import org.slf4j.LoggerFactory;
027
028/**
029 * @org.apache.xbean.XBean element="discardingDLQBrokerPlugin"
030 * @version 1.0
031 */
032public class DiscardingDLQBrokerPlugin implements BrokerPlugin {
033
034    public DiscardingDLQBrokerPlugin() {
035    }
036
037    public static Logger log = LoggerFactory.getLogger(DiscardingDLQBrokerPlugin.class);
038    private boolean dropTemporaryTopics = true;
039    private boolean dropTemporaryQueues = true;
040    private boolean dropAll = true;
041    private String dropOnly;
042    private int reportInterval = 1000;
043
044    /**
045     * Installs the plugin into the intercepter chain of the broker, returning the new
046     * intercepted broker to use.
047     *
048     * @param broker Broker
049     *
050     * @return Broker
051     *
052     * @throws Exception
053     */
054    @Override
055    public Broker installPlugin(Broker broker) throws Exception {
056        log.info("Installing Discarding Dead Letter Queue broker plugin[dropAll={}; dropTemporaryTopics={}; dropTemporaryQueues={}; dropOnly={}; reportInterval={}]", new Object[]{
057                isDropAll(), isDropTemporaryTopics(), isDropTemporaryQueues(), getDropOnly(), reportInterval
058        });
059        DiscardingDLQBroker cb = new DiscardingDLQBroker(broker);
060        cb.setDropAll(isDropAll());
061        cb.setDropTemporaryQueues(isDropTemporaryQueues());
062        cb.setDropTemporaryTopics(isDropTemporaryTopics());
063        cb.setDestFilter(getDestFilter());
064        cb.setReportInterval(getReportInterval());
065        return cb;
066    }
067
068    public boolean isDropAll() {
069        return dropAll;
070    }
071
072    public boolean isDropTemporaryQueues() {
073        return dropTemporaryQueues;
074    }
075
076    public boolean isDropTemporaryTopics() {
077        return dropTemporaryTopics;
078    }
079
080    public String getDropOnly() {
081        return dropOnly;
082    }
083
084    public int getReportInterval() {
085        return reportInterval;
086    }
087
088    public void setDropTemporaryTopics(boolean dropTemporaryTopics) {
089        this.dropTemporaryTopics = dropTemporaryTopics;
090    }
091
092    public void setDropTemporaryQueues(boolean dropTemporaryQueues) {
093        this.dropTemporaryQueues = dropTemporaryQueues;
094    }
095
096    public void setDropAll(boolean dropAll) {
097        this.dropAll = dropAll;
098    }
099
100    public void setDropOnly(String dropOnly) {
101        this.dropOnly = dropOnly;
102    }
103
104    public void setReportInterval(int reportInterval) {
105        this.reportInterval = reportInterval;
106    }
107
108    public Pattern[] getDestFilter() {
109        if (getDropOnly()==null) return null;
110        ArrayList<Pattern> list = new ArrayList<Pattern>();
111        StringTokenizer t = new StringTokenizer(getDropOnly()," ");
112        while (t.hasMoreTokens()) {
113            String s = t.nextToken();
114            if (s!=null && s.trim().length()>0) list.add(Pattern.compile(s));
115        }
116        if (list.size()==0) return null;
117        return list.toArray(new Pattern[0]);
118    }
119}