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ActiveMQ example source code file (DurableConduitBridge.java)
The ActiveMQ DurableConduitBridge.java source code/** * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You under the Apache License, Version 2.0 * (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.apache.activemq.network; import java.io.IOException; import java.util.Iterator; import org.apache.activemq.command.ActiveMQDestination; import org.apache.activemq.command.ConsumerId; import org.apache.activemq.command.ConsumerInfo; import org.apache.activemq.filter.DestinationFilter; import org.apache.activemq.transport.Transport; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Consolidates subscriptions * * */ public class DurableConduitBridge extends ConduitBridge { private static final Logger LOG = LoggerFactory.getLogger(DurableConduitBridge.class); /** * Constructor * * @param configuration * * @param localBroker * @param remoteBroker */ public DurableConduitBridge(NetworkBridgeConfiguration configuration, Transport localBroker, Transport remoteBroker) { super(configuration, localBroker, remoteBroker); } /** * Subscriptions for these destinations are always created * */ protected void setupStaticDestinations() { super.setupStaticDestinations(); ActiveMQDestination[] dests = configuration.isDynamicOnly() ? null : durableDestinations; if (dests != null) { for (int i = 0; i < dests.length; i++) { ActiveMQDestination dest = dests[i]; if (isPermissableDestination(dest) && !doesConsumerExist(dest)) { DemandSubscription sub = createDemandSubscription(dest); if (dest.isTopic()) { sub.getLocalInfo().setSubscriptionName(getSubscriberName(dest)); } try { addSubscription(sub); } catch (IOException e) { LOG.error("Failed to add static destination " + dest, e); } if (LOG.isTraceEnabled()) { LOG.trace("Forwarding messages for durable destination: " + dest); } } } } } protected DemandSubscription createDemandSubscription(ConsumerInfo info) throws IOException { if (addToAlreadyInterestedConsumers(info)) { return null; // don't want this subscription added } //add our original id to ourselves info.addNetworkConsumerId(info.getConsumerId()); if (info.isDurable()) { // set the subscriber name to something reproducible info.setSubscriptionName(getSubscriberName(info.getDestination())); // and override the consumerId with something unique so that it won't // be removed if the durable subscriber (at the other end) goes away info.setConsumerId(new ConsumerId(localSessionInfo.getSessionId(), consumerIdGenerator .getNextSequenceId())); } info.setSelector(null); return doCreateDemandSubscription(info); } protected String getSubscriberName(ActiveMQDestination dest) { String subscriberName = DURABLE_SUB_PREFIX + configuration.getBrokerName() + "_" + dest.getPhysicalName(); return subscriberName; } protected boolean doesConsumerExist(ActiveMQDestination dest) { DestinationFilter filter = DestinationFilter.parseFilter(dest); for (Iterator i = subscriptionMapByLocalId.values().iterator(); i.hasNext();) { DemandSubscription ds = (DemandSubscription)i.next(); if (filter.matches(ds.getLocalInfo().getDestination())) { return true; } } return false; } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ DurableConduitBridge.java source code file: |
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