openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/core/PublishingChannelInitializer.java

   1 /*
   2  * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.openflowjava.protocol.impl.core;
  10
  11 import io.netty.channel.Channel;
  12 import io.netty.channel.ChannelInitializer;
  13 import io.netty.channel.group.DefaultChannelGroup;
  14 import io.netty.channel.socket.SocketChannel;
  15
  16 import java.net.InetAddress;
  17 import java.util.Iterator;
  18 import java.util.concurrent.TimeUnit;
  19
  20 import org.opendaylight.openflowjava.protocol.api.connection.SwitchConnectionHandler;
  21 import org.opendaylight.openflowjava.protocol.impl.connection.ConnectionAdapterFactory;
  22 import org.opendaylight.openflowjava.protocol.impl.connection.ConnectionFacade;
  23 import org.opendaylight.openflowjava.protocol.impl.core.TcpHandler.COMPONENT_NAMES;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 /**
  28  * Initializes the channel
  29  * @author michal.polkorab
  30  */
  31 public class PublishingChannelInitializer extends ChannelInitializer<SocketChannel> {
  32
  33     private static final Logger LOGGER = LoggerFactory
  34             .getLogger(PublishingChannelInitializer.class);
  35     private DefaultChannelGroup allChannels;
  36     private SwitchConnectionHandler switchConnectionHandler;
  37     private long switchIdleTimeout;
  38     private boolean encryption;
  39
  40     /**
  41      * default ctor
  42      */
  43     public PublishingChannelInitializer() {
  44         allChannels = new DefaultChannelGroup("netty-receiver", null);
  45     }
  46
  47     @Override
  48     protected void initChannel(SocketChannel ch) {
  49         InetAddress switchAddress = ch.remoteAddress().getAddress();
  50         int port = ch.localAddress().getPort();
  51         LOGGER.info("Incoming connection from (remote address): " + switchAddress.toString() + ":" + port);
  52         if (!switchConnectionHandler.accept(switchAddress)) {
  53             ch.disconnect();
  54             LOGGER.info("Incoming connection rejected");
  55             return;
  56         }
  57         LOGGER.info("Incoming connection accepted - building pipeline");
  58         allChannels.add(ch);
  59         ConnectionFacade connectionFacade = null;
  60         connectionFacade = ConnectionAdapterFactory.createConnectionFacade(ch);
  61         try {
  62             LOGGER.debug("calling plugin: "+switchConnectionHandler);
  63             switchConnectionHandler.onSwitchConnected(connectionFacade);
  64             connectionFacade.checkListeners();
  65             TlsDetector tlsDetector;
  66             ch.pipeline().addLast(COMPONENT_NAMES.IDLE_HANDLER.name(), new IdleHandler(switchIdleTimeout, 0, 0, TimeUnit.MILLISECONDS));
  67             if (encryption) {
  68                 tlsDetector =  new TlsDetector();
  69                 tlsDetector.setConnectionFacade(connectionFacade);
  70                 ch.pipeline().addLast(COMPONENT_NAMES.TLS_DETECTOR.name(), tlsDetector);
  71             }
  72             ch.pipeline().addLast(COMPONENT_NAMES.OF_FRAME_DECODER.name(), new OFFrameDecoder());
  73             ch.pipeline().addLast(COMPONENT_NAMES.OF_VERSION_DETECTOR.name(), new OFVersionDetector());
  74             ch.pipeline().addLast(COMPONENT_NAMES.OF_DECODER.name(), new OFDecoder());
  75             ch.pipeline().addLast(COMPONENT_NAMES.OF_ENCODER.name(), new OFEncoder());
  76             ch.pipeline().addLast(COMPONENT_NAMES.DELEGATING_INBOUND_HANDLER.name(), new DelegatingInboundHandler(connectionFacade));
  77             if (!encryption) {
  78                 connectionFacade.fireConnectionReadyNotification();
  79             }
  80         } catch (Exception e) {
  81             LOGGER.error(e.getMessage(), e);
  82             ch.close();
  83         }
  84     }
  85
  86     /**
  87      * @return iterator through active connections
  88      */
  89     public Iterator<Channel> getConnectionIterator() {
  90         return allChannels.iterator();
  91     }
  92
  93     /**
  94      * @return amount of active channels
  95      */
  96     public int size() {
  97         return allChannels.size();
  98     }
  99
 100     /**
 101      * @param switchConnectionHandler the switchConnectionHandler to set
 102      */
 103     public void setSwitchConnectionHandler(SwitchConnectionHandler switchConnectionHandler) {
 104         this.switchConnectionHandler = switchConnectionHandler;
 105     }
 106
 107     /**
 108      * @param switchIdleTimeout the switchIdleTimeout to set
 109      */
 110     public void setSwitchIdleTimeout(long switchIdleTimeout) {
 111         this.switchIdleTimeout = switchIdleTimeout;
 112     }
 113
 114     /**
 115      * @param tlsSupported
 116      */
 117     public void setEncryption(boolean tlsSupported) {
 118         encryption = tlsSupported;
 119     }
 120
 121 }