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.mqtt;
018
019import java.io.IOException;
020import java.net.Socket;
021import java.net.URI;
022import java.net.URISyntaxException;
023import java.net.UnknownHostException;
024import java.util.HashMap;
025import java.util.Map;
026
027import javax.net.ServerSocketFactory;
028import javax.net.SocketFactory;
029import org.apache.activemq.broker.BrokerContext;
030import org.apache.activemq.broker.BrokerService;
031import org.apache.activemq.broker.BrokerServiceAware;
032import org.apache.activemq.transport.MutexTransport;
033import org.apache.activemq.transport.Transport;
034import org.apache.activemq.transport.nio.NIOTransportFactory;
035import org.apache.activemq.transport.tcp.TcpTransport;
036import org.apache.activemq.transport.tcp.TcpTransportServer;
037import org.apache.activemq.util.IntrospectionSupport;
038import org.apache.activemq.wireformat.WireFormat;
039
040/**
041 * A <a href="http://mqtt.org/">MQTT</a> over NIO transport factory
042 */
043public class MQTTNIOTransportFactory extends NIOTransportFactory implements BrokerServiceAware {
044
045    private BrokerContext brokerContext = null;
046
047    protected String getDefaultWireFormatType() {
048        return "mqtt";
049    }
050
051    protected TcpTransportServer createTcpTransportServer(URI location, ServerSocketFactory serverSocketFactory) throws IOException, URISyntaxException {
052        return new TcpTransportServer(this, location, serverSocketFactory) {
053            protected Transport createTransport(Socket socket, WireFormat format) throws IOException {
054                return new MQTTNIOTransport(format, socket);
055            }
056        };
057    }
058
059    protected TcpTransport createTcpTransport(WireFormat wf, SocketFactory socketFactory, URI location, URI localLocation) throws UnknownHostException, IOException {
060        return new MQTTNIOTransport(wf, socketFactory, location, localLocation);
061    }
062
063    @SuppressWarnings("rawtypes")
064    @Override
065    public Transport serverConfigure(Transport transport, WireFormat format, HashMap options) throws Exception {
066        transport = super.serverConfigure(transport, format, options);
067
068        MutexTransport mutex = transport.narrow(MutexTransport.class);
069        if (mutex != null) {
070            mutex.setSyncOnCommand(true);
071        }
072
073        return transport;
074    }
075
076    @SuppressWarnings("rawtypes")
077    public Transport compositeConfigure(Transport transport, WireFormat format, Map options) {
078        transport = new MQTTTransportFilter(transport, format, brokerContext);
079        IntrospectionSupport.setProperties(transport, options);
080        return super.compositeConfigure(transport, format, options);
081    }
082
083    public void setBrokerService(BrokerService brokerService) {
084        this.brokerContext = brokerService.getBrokerContext();
085    }
086
087    protected Transport createInactivityMonitor(Transport transport, WireFormat format) {
088        MQTTInactivityMonitor monitor = new MQTTInactivityMonitor(transport, format);
089        MQTTTransportFilter filter = transport.narrow(MQTTTransportFilter.class);
090        filter.setInactivityMonitor(monitor);
091        return monitor;
092    }
093
094}
095