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ActiveMQ example source code file (CompositeDemandForwardingBridge.java)
The ActiveMQ CompositeDemandForwardingBridge.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 org.apache.activemq.command.BrokerId; import org.apache.activemq.command.BrokerInfo; import org.apache.activemq.command.Command; import org.apache.activemq.command.ConsumerInfo; import org.apache.activemq.command.Endpoint; import org.apache.activemq.command.NetworkBridgeFilter; import org.apache.activemq.transport.Transport; import org.apache.activemq.util.ServiceSupport; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * A demand forwarding bridge which works with multicast style transports where * a single Transport could be communicating with multiple remote brokers * * @org.apache.xbean.XBean * * */ public class CompositeDemandForwardingBridge extends DemandForwardingBridgeSupport { private static final Logger LOG = LoggerFactory.getLogger(CompositeDemandForwardingBridge.class); protected final BrokerId remoteBrokerPath[] = new BrokerId[] {null}; protected Object brokerInfoMutex = new Object(); public CompositeDemandForwardingBridge(NetworkBridgeConfiguration configuration, Transport localBroker, Transport remoteBroker) { super(configuration, localBroker, remoteBroker); remoteBrokerName = remoteBroker.toString(); remoteBrokerNameKnownLatch.countDown(); } protected void serviceRemoteBrokerInfo(Command command) throws IOException { synchronized (brokerInfoMutex) { BrokerInfo remoteBrokerInfo = (BrokerInfo)command; BrokerId remoteBrokerId = remoteBrokerInfo.getBrokerId(); // lets associate the incoming endpoint with a broker ID so we can // refer to it later Endpoint from = command.getFrom(); if (from == null) { LOG.warn("Incoming command does not have a from endpoint: " + command); } else { from.setBrokerInfo(remoteBrokerInfo); } if (localBrokerId != null) { if (localBrokerId.equals(remoteBrokerId)) { LOG.info("Disconnecting loop back connection."); // waitStarted(); ServiceSupport.dispose(this); } } if (!disposed.get()) { triggerLocalStartBridge(); } } } protected void addRemoteBrokerToBrokerPath(ConsumerInfo info) throws IOException { info.setBrokerPath(appendToBrokerPath(info.getBrokerPath(), getFromBrokerId(info))); } /** * Returns the broker ID that the command came from */ protected BrokerId getFromBrokerId(Command command) throws IOException { BrokerId answer = null; Endpoint from = command.getFrom(); if (from == null) { LOG.warn("Incoming command does not have a from endpoint: " + command); } else { answer = from.getBrokerId(); } if (answer != null) { return answer; } else { throw new IOException("No broker ID is available for endpoint: " + from + " from command: " + command); } } protected void serviceLocalBrokerInfo(Command command) throws InterruptedException { // TODO is there much we can do here? } protected NetworkBridgeFilter createNetworkBridgeFilter(ConsumerInfo info) throws IOException { return new NetworkBridgeFilter(getFromBrokerId(info), configuration.getNetworkTTL()); } protected BrokerId[] getRemoteBrokerPath() { return remoteBrokerPath; } } Other ActiveMQ examples (source code examples)Here is a short list of links related to this ActiveMQ CompositeDemandForwardingBridge.java source code file: |
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