bgp/rib-impl/src/main/java/org/opendaylight/protocol/bgp/rib/impl/BGPDispatcherImpl.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. 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 package org.opendaylight.protocol.bgp.rib.impl;
   9
  10 import com.google.common.base.Preconditions;
  11
  12 import io.netty.bootstrap.Bootstrap;
  13 import io.netty.bootstrap.ServerBootstrap;
  14 import io.netty.channel.EventLoopGroup;
  15 import io.netty.channel.socket.SocketChannel;
  16 import io.netty.util.Timer;
  17 import io.netty.util.concurrent.Future;
  18 import io.netty.util.concurrent.Promise;
  19
  20 import java.net.InetSocketAddress;
  21
  22 import org.opendaylight.bgpcep.tcpmd5.KeyMapping;
  23 import org.opendaylight.bgpcep.tcpmd5.netty.MD5ChannelFactory;
  24 import org.opendaylight.bgpcep.tcpmd5.netty.MD5ChannelOption;
  25 import org.opendaylight.bgpcep.tcpmd5.netty.MD5ServerChannelFactory;
  26 import org.opendaylight.protocol.bgp.parser.BGPSessionListener;
  27 import org.opendaylight.protocol.bgp.parser.spi.MessageRegistry;
  28 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPDispatcher;
  29 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPSessionPreferences;
  30 import org.opendaylight.protocol.framework.AbstractDispatcher;
  31 import org.opendaylight.protocol.framework.ReconnectStrategy;
  32 import org.opendaylight.protocol.framework.ReconnectStrategyFactory;
  33 import org.opendaylight.protocol.framework.SessionListenerFactory;
  34 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.AsNumber;
  35
  36 /**
  37  * Implementation of BGPDispatcher.
  38  */
  39 public final class BGPDispatcherImpl extends AbstractDispatcher<BGPSessionImpl, BGPSessionListener> implements BGPDispatcher, AutoCloseable {
  40     private final MD5ServerChannelFactory<?> scf;
  41     private final MD5ChannelFactory<?> cf;
  42     private final BGPHandlerFactory hf;
  43     private final Timer timer;
  44     private KeyMapping keys;
  45
  46     public BGPDispatcherImpl(final MessageRegistry messageRegistry, final Timer timer, final EventLoopGroup bossGroup,
  47             final EventLoopGroup workerGroup) {
  48         this(messageRegistry, timer, bossGroup, workerGroup, null, null);
  49     }
  50
  51     public BGPDispatcherImpl(final MessageRegistry messageRegistry, final Timer timer, final EventLoopGroup bossGroup,
  52             final EventLoopGroup workerGroup, final MD5ChannelFactory<?> cf, final MD5ServerChannelFactory<?> scf) {
  53         super(bossGroup, workerGroup);
  54         this.timer = Preconditions.checkNotNull(timer);
  55         this.hf = new BGPHandlerFactory(messageRegistry);
  56         this.cf = cf;
  57         this.scf = scf;
  58     }
  59
  60     @Override
  61     public synchronized Future<BGPSessionImpl> createClient(final InetSocketAddress address, final BGPSessionPreferences preferences,
  62             final AsNumber remoteAs, final BGPSessionListener listener, final ReconnectStrategy strategy) {
  63         final BGPSessionNegotiatorFactory snf = new BGPSessionNegotiatorFactory(this.timer, preferences, remoteAs);
  64         final SessionListenerFactory<BGPSessionListener> slf = new SessionListenerFactory<BGPSessionListener>() {
  65             @Override
  66             public BGPSessionListener getSessionListener() {
  67                 return listener;
  68             }
  69         };
  70         return super.createClient(address, strategy, new PipelineInitializer<BGPSessionImpl>() {
  71             @Override
  72             public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
  73                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
  74                 ch.pipeline().addLast("negotiator", snf.getSessionNegotiator(slf, ch, promise));
  75                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
  76             }
  77         });
  78     }
  79
  80     @Override
  81     public Future<Void> createReconnectingClient(final InetSocketAddress address, final BGPSessionPreferences preferences,
  82             final AsNumber remoteAs, final BGPSessionListener listener, final ReconnectStrategyFactory connectStrategyFactory,
  83             final ReconnectStrategyFactory reestablishStrategyFactory) {
  84         return this.createReconnectingClient(address, preferences, remoteAs, listener, connectStrategyFactory, reestablishStrategyFactory,
  85                 null);
  86     }
  87
  88     @Override
  89     public void close() {
  90     }
  91
  92     @Override
  93     public synchronized Future<Void> createReconnectingClient(final InetSocketAddress address, final BGPSessionPreferences preferences,
  94             final AsNumber remoteAs, final BGPSessionListener listener, final ReconnectStrategyFactory connectStrategyFactory,
  95             final ReconnectStrategyFactory reestablishStrategyFactory, final KeyMapping keys) {
  96         final BGPSessionNegotiatorFactory snf = new BGPSessionNegotiatorFactory(this.timer, preferences, remoteAs);
  97         final SessionListenerFactory<BGPSessionListener> slf = new SessionListenerFactory<BGPSessionListener>() {
  98             @Override
  99             public BGPSessionListener getSessionListener() {
 100                 return listener;
 101             }
 102         };
 103
 104         this.keys = keys;
 105         final Future<Void> ret = super.createReconnectingClient(address, connectStrategyFactory,
 106                 reestablishStrategyFactory.createReconnectStrategy(), new PipelineInitializer<BGPSessionImpl>() {
 107                     @Override
 108                     public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
 109                         ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
 110                         ch.pipeline().addLast("negotiator", snf.getSessionNegotiator(slf, ch, promise));
 111                         ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
 112                     }
 113                 });
 114         this.keys = null;
 115
 116         return ret;
 117     }
 118
 119     @Override
 120     protected void customizeBootstrap(final Bootstrap b) {
 121         if (keys != null && !keys.isEmpty()) {
 122             if (cf == null) {
 123                 throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
 124             }
 125             b.channelFactory(cf);
 126             b.option(MD5ChannelOption.TCP_MD5SIG, keys);
 127         }
 128     }
 129
 130     @Override
 131     protected void customizeBootstrap(final ServerBootstrap b) {
 132         if (keys != null && !keys.isEmpty()) {
 133             if (scf == null) {
 134                 throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
 135             }
 136             b.channelFactory(scf);
 137             b.option(MD5ChannelOption.TCP_MD5SIG, keys);
 138         }
 139     }
 140
 141 }