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.Arrays;
021import java.util.List;
022
023import org.apache.activemq.broker.region.CompositeDestinationInterceptor;
024import org.apache.activemq.broker.region.DestinationInterceptor;
025import org.apache.activemq.broker.region.RegionBroker;
026import org.apache.activemq.broker.region.virtual.VirtualDestination;
027import org.apache.activemq.broker.region.virtual.VirtualDestinationInterceptor;
028
029public abstract class UpdateVirtualDestinationsTask implements Runnable {
030
031    private final AbstractRuntimeConfigurationBroker plugin;
032
033    public UpdateVirtualDestinationsTask(
034            AbstractRuntimeConfigurationBroker plugin) {
035        super();
036        this.plugin = plugin;
037    }
038
039    @Override
040    public void run() {
041
042        boolean updatedExistingInterceptor = false;
043        RegionBroker regionBroker = (RegionBroker) plugin.getBrokerService()
044                .getRegionBroker();
045
046        for (DestinationInterceptor destinationInterceptor : plugin
047                .getBrokerService().getDestinationInterceptors()) {
048            if (destinationInterceptor instanceof VirtualDestinationInterceptor) {
049                // update existing interceptor
050                final VirtualDestinationInterceptor virtualDestinationInterceptor = (VirtualDestinationInterceptor) destinationInterceptor;
051
052                virtualDestinationInterceptor
053                        .setVirtualDestinations(getVirtualDestinations());
054                plugin.info("applied updates to: "
055                        + virtualDestinationInterceptor);
056                updatedExistingInterceptor = true;
057            }
058        }
059
060        if (!updatedExistingInterceptor) {
061            // add
062            VirtualDestinationInterceptor virtualDestinationInterceptor = new VirtualDestinationInterceptor();
063            virtualDestinationInterceptor.setVirtualDestinations(getVirtualDestinations());
064
065            List<DestinationInterceptor> interceptorsList = new ArrayList<DestinationInterceptor>();
066            interceptorsList.addAll(Arrays.asList(plugin.getBrokerService()
067                    .getDestinationInterceptors()));
068            interceptorsList.add(virtualDestinationInterceptor);
069
070            DestinationInterceptor[] destinationInterceptors = interceptorsList
071                    .toArray(new DestinationInterceptor[] {});
072            plugin.getBrokerService().setDestinationInterceptors(
073                    destinationInterceptors);
074
075            ((CompositeDestinationInterceptor) regionBroker
076                    .getDestinationInterceptor())
077                    .setInterceptors(destinationInterceptors);
078            plugin.info("applied new: " + interceptorsList);
079        }
080        regionBroker.reapplyInterceptor();
081    }
082
083    protected abstract VirtualDestination[] getVirtualDestinations();
084}