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