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;
029
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.TcpTransport.InitBuffer;
037import org.apache.activemq.transport.tcp.TcpTransportServer;
038import org.apache.activemq.util.IntrospectionSupport;
039import org.apache.activemq.wireformat.WireFormat;
040
041/**
042 * A <a href="http://mqtt.org/">MQTT</a> over NIO transport factory
043 */
044public class MQTTNIOTransportFactory extends NIOTransportFactory implements BrokerServiceAware {
045
046    private BrokerService brokerService = null;
047
048    @Override
049    protected String getDefaultWireFormatType() {
050        return "mqtt";
051    }
052
053    @Override
054    protected TcpTransportServer createTcpTransportServer(URI location, ServerSocketFactory serverSocketFactory) throws IOException, URISyntaxException {
055        TcpTransportServer result = new TcpTransportServer(this, location, serverSocketFactory) {
056            @Override
057            protected Transport createTransport(Socket socket, WireFormat format) throws IOException {
058                return new MQTTNIOTransport(format, socket);
059            }
060        };
061        result.setAllowLinkStealing(true);
062        return result;
063    }
064
065    @Override
066    protected TcpTransport createTcpTransport(WireFormat wf, SocketFactory socketFactory, URI location, URI localLocation) throws UnknownHostException, IOException {
067        return new MQTTNIOTransport(wf, socketFactory, location, localLocation);
068    }
069
070    @Override
071    public TcpTransport createTransport(WireFormat wireFormat, Socket socket,
072            InitBuffer initBuffer) throws IOException {
073        return new MQTTNIOTransport(wireFormat, socket, initBuffer);
074    }
075
076    @SuppressWarnings("rawtypes")
077    @Override
078    public Transport serverConfigure(Transport transport, WireFormat format, HashMap options) throws Exception {
079        transport = super.serverConfigure(transport, format, options);
080
081        MutexTransport mutex = transport.narrow(MutexTransport.class);
082        if (mutex != null) {
083            mutex.setSyncOnCommand(true);
084        }
085
086        return transport;
087    }
088
089    @Override
090    @SuppressWarnings("rawtypes")
091    public Transport compositeConfigure(Transport transport, WireFormat format, Map options) {
092        transport = new MQTTTransportFilter(transport, format, brokerService);
093        IntrospectionSupport.setProperties(transport, options);
094        return super.compositeConfigure(transport, format, options);
095    }
096
097    @Override
098    public void setBrokerService(BrokerService brokerService) {
099        this.brokerService = brokerService;
100    }
101
102    @Override
103    protected Transport createInactivityMonitor(Transport transport, WireFormat format) {
104        MQTTInactivityMonitor monitor = new MQTTInactivityMonitor(transport, format);
105        MQTTTransportFilter filter = transport.narrow(MQTTTransportFilter.class);
106        filter.setInactivityMonitor(monitor);
107        return monitor;
108    }
109}
110