openflowjava/openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/core/TcpChannelInitializer.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.group.DefaultChannelGroup;
  13 import io.netty.channel.socket.SocketChannel;
  14 import io.netty.handler.ssl.SslHandler;
  15 import io.netty.util.concurrent.Future;
  16 import java.net.InetAddress;
  17 import java.util.Arrays;
  18 import java.util.Iterator;
  19 import java.util.List;
  20 import java.util.concurrent.TimeUnit;
  21 import javax.net.ssl.SSLEngine;
  22 import org.opendaylight.openflowjava.protocol.impl.core.connection.ConnectionAdapterFactory;
  23 import org.opendaylight.openflowjava.protocol.impl.core.connection.ConnectionAdapterFactoryImpl;
  24 import org.opendaylight.openflowjava.protocol.impl.core.connection.ConnectionFacade;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 /**
  29  * Initializes TCP / TLS channel.
  30  * @author michal.polkorab
  31  */
  32 public class TcpChannelInitializer extends ProtocolChannelInitializer<SocketChannel> {
  33
  34     private static final Logger LOG = LoggerFactory.getLogger(TcpChannelInitializer.class);
  35     private final DefaultChannelGroup allChannels;
  36     private final ConnectionAdapterFactory connectionAdapterFactory;
  37
  38     /**
  39      * Default constructor.
  40      */
  41     public TcpChannelInitializer() {
  42         this(new DefaultChannelGroup("netty-receiver", null), new ConnectionAdapterFactoryImpl());
  43     }
  44
  45     /**
  46      * Testing constructor.
  47      */
  48     protected TcpChannelInitializer(final DefaultChannelGroup channelGroup,
  49             final ConnectionAdapterFactory connAdaptorFactory) {
  50         allChannels = channelGroup;
  51         connectionAdapterFactory = connAdaptorFactory;
  52     }
  53
  54     @Override
  55     @SuppressWarnings("checkstyle:IllegalCatch")
  56     protected void initChannel(final SocketChannel ch) {
  57         if (ch.remoteAddress() != null) {
  58             final InetAddress switchAddress = ch.remoteAddress().getAddress();
  59             final int port = ch.localAddress().getPort();
  60             final int remotePort = ch.remoteAddress().getPort();
  61             LOG.debug("Incoming connection from (remote address): {}:{} --> :{}",
  62                 switchAddress.toString(), remotePort, port);
  63
  64             if (!getSwitchConnectionHandler().accept(switchAddress)) {
  65                 ch.disconnect();
  66                 LOG.debug("Incoming connection rejected");
  67                 return;
  68             }
  69         }
  70         LOG.debug("Incoming connection accepted - building pipeline");
  71         allChannels.add(ch);
  72         ConnectionFacade connectionFacade = null;
  73         connectionFacade = connectionAdapterFactory.createConnectionFacade(ch, null, useBarrier());
  74         try {
  75             LOG.debug("Calling OF plugin: {}", getSwitchConnectionHandler());
  76             getSwitchConnectionHandler().onSwitchConnected(connectionFacade);
  77             connectionFacade.checkListeners();
  78             ch.pipeline().addLast(PipelineHandlers.IDLE_HANDLER.name(),
  79                     new IdleHandler(getSwitchIdleTimeout(), TimeUnit.MILLISECONDS));
  80             boolean tlsPresent = false;
  81
  82             // If this channel is configured to support SSL it will only support SSL
  83             if (getTlsConfiguration() != null) {
  84                 tlsPresent = true;
  85                 final SslContextFactory sslFactory = new SslContextFactory(getTlsConfiguration());
  86                 final SSLEngine engine = sslFactory.getServerContext().createSSLEngine();
  87                 engine.setNeedClientAuth(true);
  88                 engine.setUseClientMode(false);
  89                 List<String> suitesList = getTlsConfiguration().getCipherSuites();
  90                 if (suitesList != null && !suitesList.isEmpty()) {
  91                     LOG.debug("Requested Cipher Suites are: {}", suitesList);
  92                     String[] suites = suitesList.toArray(new String[suitesList.size()]);
  93                     engine.setEnabledCipherSuites(suites);
  94                     LOG.debug("Cipher suites enabled in SSLEngine are: {}",
  95                             Arrays.toString(engine.getEnabledCipherSuites()));
  96                 }
  97                 final SslHandler ssl = new SslHandler(engine);
  98                 final Future<Channel> handshakeFuture = ssl.handshakeFuture();
  99                 final ConnectionFacade finalConnectionFacade = connectionFacade;
 100                 handshakeFuture.addListener(future -> finalConnectionFacade.fireConnectionReadyNotification());
 101                 ch.pipeline().addLast(PipelineHandlers.SSL_HANDLER.name(), ssl);
 102             }
 103             ch.pipeline().addLast(PipelineHandlers.OF_FRAME_DECODER.name(),
 104                     new OFFrameDecoder(connectionFacade, tlsPresent));
 105             ch.pipeline().addLast(PipelineHandlers.OF_VERSION_DETECTOR.name(), new OFVersionDetector());
 106             final OFDecoder ofDecoder = new OFDecoder();
 107             ofDecoder.setDeserializationFactory(getDeserializationFactory());
 108             ch.pipeline().addLast(PipelineHandlers.OF_DECODER.name(), ofDecoder);
 109             final OFEncoder ofEncoder = new OFEncoder();
 110             ofEncoder.setSerializationFactory(getSerializationFactory());
 111             ch.pipeline().addLast(PipelineHandlers.OF_ENCODER.name(), ofEncoder);
 112             ch.pipeline().addLast(PipelineHandlers.DELEGATING_INBOUND_HANDLER.name(),
 113                     new DelegatingInboundHandler(connectionFacade));
 114             if (!tlsPresent) {
 115                 connectionFacade.fireConnectionReadyNotification();
 116             }
 117         } catch (RuntimeException e) {
 118             LOG.warn("Failed to initialize channel", e);
 119             ch.close();
 120         }
 121     }
 122
 123     /**
 124      * Returns the connection iterator.
 125      *
 126      * @return iterator through active connections
 127      */
 128     public Iterator<Channel> getConnectionIterator() {
 129         return allChannels.iterator();
 130     }
 131
 132     /**
 133      * Returns the number of active channels.
 134      *
 135      * @return amount of active channels
 136      */
 137     public int size() {
 138         return allChannels.size();
 139     }
 140 }