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.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 BrokerService brokerService = null;
046
047    @Override
048    protected String getDefaultWireFormatType() {
049        return "mqtt";
050    }
051
052    @Override
053    protected TcpTransportServer createTcpTransportServer(URI location, ServerSocketFactory serverSocketFactory) throws IOException, URISyntaxException {
054        TcpTransportServer result = new TcpTransportServer(this, location, serverSocketFactory) {
055            @Override
056            protected Transport createTransport(Socket socket, WireFormat format) throws IOException {
057                return new MQTTNIOTransport(format, socket);
058            }
059        };
060        result.setAllowLinkStealing(true);
061        return result;
062    }
063
064    @Override
065    protected TcpTransport createTcpTransport(WireFormat wf, SocketFactory socketFactory, URI location, URI localLocation) throws UnknownHostException, IOException {
066        return new MQTTNIOTransport(wf, socketFactory, location, localLocation);
067    }
068
069    @SuppressWarnings("rawtypes")
070    @Override
071    public Transport serverConfigure(Transport transport, WireFormat format, HashMap options) throws Exception {
072        transport = super.serverConfigure(transport, format, options);
073
074        MutexTransport mutex = transport.narrow(MutexTransport.class);
075        if (mutex != null) {
076            mutex.setSyncOnCommand(true);
077        }
078
079        return transport;
080    }
081
082    @Override
083    @SuppressWarnings("rawtypes")
084    public Transport compositeConfigure(Transport transport, WireFormat format, Map options) {
085        transport = new MQTTTransportFilter(transport, format, brokerService);
086        IntrospectionSupport.setProperties(transport, options);
087        return super.compositeConfigure(transport, format, options);
088    }
089
090    @Override
091    public void setBrokerService(BrokerService brokerService) {
092        this.brokerService = brokerService;
093    }
094
095    @Override
096    protected Transport createInactivityMonitor(Transport transport, WireFormat format) {
097        MQTTInactivityMonitor monitor = new MQTTInactivityMonitor(transport, format);
098        MQTTTransportFilter filter = transport.narrow(MQTTTransportFilter.class);
099        filter.setInactivityMonitor(monitor);
100        return monitor;
101    }
102}
103