content: /**
   * 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.mqtt;
  
  import java.io.IOException;
  import java.net.Socket;
  import java.net.URI;
  import java.net.URISyntaxException;
  import java.net.UnknownHostException;
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.net.ServerSocketFactory;
  import javax.net.SocketFactory;
  
  import org.apache.activemq.broker.BrokerService;
  import org.apache.activemq.broker.BrokerServiceAware;
  import org.apache.activemq.transport.MutexTransport;
  import org.apache.activemq.transport.Transport;
  import org.apache.activemq.transport.nio.NIOTransportFactory;
  import org.apache.activemq.transport.tcp.TcpTransport;
  import org.apache.activemq.transport.tcp.TcpTransport.InitBuffer;
  import org.apache.activemq.transport.tcp.TcpTransportServer;
  import org.apache.activemq.util.IntrospectionSupport;
  import org.apache.activemq.wireformat.WireFormat;
  
  /**
   * A <a href="http://mqtt.org/">MQTT</a> over NIO transport factory
   */
  public class MQTTNIOTransportFactory extends NIOTransportFactory implements BrokerServiceAware {
  
      private BrokerService brokerService = null;
  
      @Override
      protected String getDefaultWireFormatType() {
          return "mqtt";
      }
  
      @Override
      protected TcpTransportServer createTcpTransportServer(URI location, ServerSocketFactory serverSocketFactory) throws IOException, URISyntaxException {
          TcpTransportServer result = new TcpTransportServer(this, location, serverSocketFactory) {
              @Override
              protected Transport createTransport(Socket socket, WireFormat format) throws IOException {
                  return new MQTTNIOTransport(format, socket);
              }
          };
          result.setAllowLinkStealing(true);
          return result;
      }
  
      @Override
      protected TcpTransport createTcpTransport(WireFormat wf, SocketFactory socketFactory, URI location, URI localLocation) throws UnknownHostException, IOException {
          return new MQTTNIOTransport(wf, socketFactory, location, localLocation);
      }
  
      @Override
      public TcpTransport createTransport(WireFormat wireFormat, Socket socket,
              InitBuffer initBuffer) throws IOException {
          return new MQTTNIOTransport(wireFormat, socket, initBuffer);
      }
  
      @SuppressWarnings("rawtypes")
      @Override
      public Transport serverConfigure(Transport transport, WireFormat format, HashMap options) throws Exception {
          transport = super.serverConfigure(transport, format, options);
  
          MutexTransport mutex = transport.narrow(MutexTransport.class);
          if (mutex != null) {
              mutex.setSyncOnCommand(true);
          }
  
          return transport;
      }
  
      @Override
      @SuppressWarnings("rawtypes")
      public Transport compositeConfigure(Transport transport, WireFormat format, Map options) {
          transport = new MQTTTransportFilter(transport, format, brokerService);
          IntrospectionSupport.setProperties(transport, options);
          return super.compositeConfigure(transport, format, options);
      }
  
      @Override
      public void setBrokerService(BrokerService brokerService) {
          this.brokerService = brokerService;
      }
  
      @Override
      protected Transport createInactivityMonitor(Transport transport, WireFormat format) {
          MQTTInactivityMonitor monitor = new MQTTInactivityMonitor(transport, format);
          MQTTTransportFilter filter = transport.narrow(MQTTTransportFilter.class);
          filter.setInactivityMonitor(monitor);
          return monitor;
      }
  }
  
  