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.transport.peer;
018
019import java.io.IOException;
020import java.net.URI;
021import java.net.URISyntaxException;
022import java.util.HashMap;
023import java.util.Map;
024import java.util.concurrent.ConcurrentHashMap;
025
026import org.apache.activemq.broker.BrokerFactoryHandler;
027import org.apache.activemq.broker.BrokerService;
028import org.apache.activemq.broker.TransportConnector;
029import org.apache.activemq.transport.Transport;
030import org.apache.activemq.transport.TransportFactory;
031import org.apache.activemq.transport.TransportServer;
032import org.apache.activemq.transport.vm.VMTransportFactory;
033import org.apache.activemq.util.IOExceptionSupport;
034import org.apache.activemq.util.IdGenerator;
035import org.apache.activemq.util.IntrospectionSupport;
036import org.apache.activemq.util.URISupport;
037
038public class PeerTransportFactory extends TransportFactory {
039
040    public static final ConcurrentHashMap BROKERS = new ConcurrentHashMap();
041    public static final ConcurrentHashMap CONNECTORS = new ConcurrentHashMap();
042    public static final ConcurrentHashMap SERVERS = new ConcurrentHashMap();
043    private static final IdGenerator ID_GENERATOR = new IdGenerator("peer-");
044
045    public Transport doConnect(URI location) throws Exception {
046        VMTransportFactory vmTransportFactory = createTransportFactory(location);
047        return vmTransportFactory.doConnect(location);
048    }
049
050    public Transport doCompositeConnect(URI location) throws Exception {
051        VMTransportFactory vmTransportFactory = createTransportFactory(location);
052        return vmTransportFactory.doCompositeConnect(location);
053    }
054
055    /**
056     * @param location
057     * @return the converted URI
058     * @throws URISyntaxException
059     */
060    private VMTransportFactory createTransportFactory(URI location) throws IOException {
061        try {
062            String group = location.getHost();
063            String broker = URISupport.stripPrefix(location.getPath(), "/");
064
065            if (group == null) {
066                group = "default";
067            }
068            if (broker == null || broker.length() == 0) {
069                broker = ID_GENERATOR.generateSanitizedId();
070            }
071
072            final Map<String, String> brokerOptions = new HashMap<String, String>(URISupport.parseParameters(location));
073            if (!brokerOptions.containsKey("persistent")) {
074                brokerOptions.put("persistent", "false");
075            }
076
077            final URI finalLocation = new URI("vm://" + broker);
078            final String finalBroker = broker;
079            final String finalGroup = group;
080            VMTransportFactory rc = new VMTransportFactory() {
081                public Transport doConnect(URI ignore) throws Exception {
082                    return super.doConnect(finalLocation);
083                };
084
085                public Transport doCompositeConnect(URI ignore) throws Exception {
086                    return super.doCompositeConnect(finalLocation);
087                };
088            };
089            rc.setBrokerFactoryHandler(new BrokerFactoryHandler() {
090                public BrokerService createBroker(URI brokerURI) throws Exception {
091                    BrokerService service = new BrokerService();
092                    IntrospectionSupport.setProperties(service, brokerOptions);
093                    service.setBrokerName(finalBroker);
094                    TransportConnector c = service.addConnector("tcp://0.0.0.0:0");
095                    c.setDiscoveryUri(new URI("multicast://default?group=" + finalGroup));
096                    service.addNetworkConnector("multicast://default?group=" + finalGroup);
097                    return service;
098                }
099            });
100            return rc;
101
102        } catch (URISyntaxException e) {
103            throw IOExceptionSupport.create(e);
104        }
105    }
106
107    public TransportServer doBind(URI location) throws IOException {
108        throw new IOException("This protocol does not support being bound.");
109    }
110
111}