alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

ActiveMQ example source code file (PeerTransportFactory.java)

This example ActiveMQ source code file (PeerTransportFactory.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

brokerfactoryhandler, brokerservice, concurrenthashmap, concurrenthashmap, exception, exception, idgenerator, io, ioexception, net, network, string, string, threading, threads, transport, uri, util, vmtransportfactory, vmtransportfactory

The ActiveMQ PeerTransportFactory.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.transport.peer;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.activemq.broker.BrokerFactoryHandler;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.transport.Transport;
import org.apache.activemq.transport.TransportFactory;
import org.apache.activemq.transport.TransportServer;
import org.apache.activemq.transport.vm.VMTransportFactory;
import org.apache.activemq.util.IOExceptionSupport;
import org.apache.activemq.util.IdGenerator;
import org.apache.activemq.util.IntrospectionSupport;
import org.apache.activemq.util.URISupport;

public class PeerTransportFactory extends TransportFactory {

    public static final ConcurrentHashMap BROKERS = new ConcurrentHashMap();
    public static final ConcurrentHashMap CONNECTORS = new ConcurrentHashMap();
    public static final ConcurrentHashMap SERVERS = new ConcurrentHashMap();
    private static final IdGenerator ID_GENERATOR = new IdGenerator("peer-");

    public Transport doConnect(URI location) throws Exception {
        VMTransportFactory vmTransportFactory = createTransportFactory(location);
        return vmTransportFactory.doConnect(location);
    }

    public Transport doCompositeConnect(URI location) throws Exception {
        VMTransportFactory vmTransportFactory = createTransportFactory(location);
        return vmTransportFactory.doCompositeConnect(location);
    }

    /**
     * @param location
     * @return the converted URI
     * @throws URISyntaxException
     */
    private VMTransportFactory createTransportFactory(URI location) throws IOException {
        try {
            String group = location.getHost();
            String broker = URISupport.stripPrefix(location.getPath(), "/");

            if (group == null) {
                group = "default";
            }
            if (broker == null || broker.length() == 0) {
                broker = ID_GENERATOR.generateSanitizedId();
            }

            final Map<String, String> brokerOptions = new HashMap(URISupport.parseParameters(location));
            if (!brokerOptions.containsKey("persistent")) {
                brokerOptions.put("persistent", "false");
            }

            final URI finalLocation = new URI("vm://" + broker);
            final String finalBroker = broker;
            final String finalGroup = group;
            VMTransportFactory rc = new VMTransportFactory() {
                public Transport doConnect(URI ignore) throws Exception {
                    return super.doConnect(finalLocation);
                };

                public Transport doCompositeConnect(URI ignore) throws Exception {
                    return super.doCompositeConnect(finalLocation);
                };
            };
            rc.setBrokerFactoryHandler(new BrokerFactoryHandler() {
                public BrokerService createBroker(URI brokerURI) throws Exception {
                    BrokerService service = new BrokerService();
                    IntrospectionSupport.setProperties(service, brokerOptions);
                    service.setBrokerName(finalBroker);
                    TransportConnector c = service.addConnector("tcp://0.0.0.0:0");
                    c.setDiscoveryUri(new URI("multicast://default?group=" + finalGroup));
                    service.addNetworkConnector("multicast://default?group=" + finalGroup);
                    return service;
                }
            });
            return rc;

        } catch (URISyntaxException e) {
            throw IOExceptionSupport.create(e);
        }
    }

    public TransportServer doBind(URI location) throws IOException {
        throw new IOException("This protocol does not support being bound.");
    }

}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ PeerTransportFactory.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.