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 io.netty.bootstrap.Bootstrap;
  11 import io.netty.bootstrap.ServerBootstrap;
  12 import io.netty.channel.ChannelFuture;
  13 import io.netty.channel.ChannelOption;
  14 import io.netty.channel.EventLoopGroup;
  15 import io.netty.channel.socket.SocketChannel;
  16 import io.netty.util.concurrent.Future;
  17 import io.netty.util.concurrent.Promise;
  18 import java.net.InetSocketAddress;
  19 import org.opendaylight.protocol.bgp.parser.spi.MessageRegistry;
  20 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPDispatcher;
  21 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPPeerRegistry;
  22 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPSessionValidator;
  23 import org.opendaylight.protocol.bgp.rib.spi.BGPSessionListener;
  24 import org.opendaylight.protocol.framework.AbstractDispatcher;
  25 import org.opendaylight.protocol.framework.ReconnectStrategy;
  26 import org.opendaylight.protocol.framework.ReconnectStrategyFactory;
  27 import org.opendaylight.tcpmd5.api.KeyMapping;
  28 import org.opendaylight.tcpmd5.netty.MD5ChannelFactory;
  29 import org.opendaylight.tcpmd5.netty.MD5ChannelOption;
  30 import org.opendaylight.tcpmd5.netty.MD5ServerChannelFactory;
  31 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.AsNumber;
  32
  33 /**
  34  * Implementation of BGPDispatcher.
  35  */
  36 public final class BGPDispatcherImpl extends AbstractDispatcher<BGPSessionImpl, BGPSessionListener> implements BGPDispatcher, AutoCloseable {
  37     private final MD5ServerChannelFactory<?> scf;
  38     private final MD5ChannelFactory<?> cf;
  39     private final BGPHandlerFactory hf;
  40     private KeyMapping keys;
  41     private static final String NEGOTIATOR = "negotiator";
  42
  43     public BGPDispatcherImpl(final MessageRegistry messageRegistry, final EventLoopGroup bossGroup, final EventLoopGroup workerGroup) {
  44         this(messageRegistry, bossGroup, workerGroup, null, null);
  45     }
  46
  47     public BGPDispatcherImpl(final MessageRegistry messageRegistry, final EventLoopGroup bossGroup, final EventLoopGroup workerGroup, final MD5ChannelFactory<?> cf, final MD5ServerChannelFactory<?> scf) {
  48         super(bossGroup, workerGroup);
  49         this.hf = new BGPHandlerFactory(messageRegistry);
  50         this.cf = cf;
  51         this.scf = scf;
  52     }
  53
  54     @Override
  55     public synchronized Future<BGPSessionImpl> createClient(final InetSocketAddress address,
  56         final AsNumber remoteAs, final BGPPeerRegistry listener, final ReconnectStrategy strategy) {
  57         final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(remoteAs, listener);
  58         return super.createClient(address, strategy, new PipelineInitializer<BGPSessionImpl>() {
  59             @Override
  60             public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
  61                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
  62                 ch.pipeline().addLast(NEGOTIATOR, snf.getSessionNegotiator(null, ch, promise));
  63                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
  64             }
  65         });
  66     }
  67
  68     @Override
  69     public Future<Void> createReconnectingClient(final InetSocketAddress address,
  70         final AsNumber remoteAs, final BGPPeerRegistry listener, final ReconnectStrategyFactory connectStrategyFactory,
  71         final ReconnectStrategyFactory reestablishStrategyFactory) {
  72         return this.createReconnectingClient(address, remoteAs, listener, connectStrategyFactory, reestablishStrategyFactory,
  73             null);
  74     }
  75
  76     @Override
  77     public void close() {
  78     }
  79
  80     @Override
  81     public synchronized Future<Void> createReconnectingClient(final InetSocketAddress address,
  82         final AsNumber remoteAs, final BGPPeerRegistry peerRegistry, final ReconnectStrategyFactory connectStrategyFactory,
  83         final ReconnectStrategyFactory reestablishStrategyFactory, final KeyMapping keys) {
  84         final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(remoteAs, peerRegistry);
  85
  86         this.keys = keys;
  87         final Future<Void> ret = super.createReconnectingClient(address, connectStrategyFactory, reestablishStrategyFactory.createReconnectStrategy(), new PipelineInitializer<BGPSessionImpl>() {
  88             @Override
  89             public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
  90                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
  91                 ch.pipeline().addLast(NEGOTIATOR, snf.getSessionNegotiator(null, ch, promise));
  92                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
  93             }
  94         });
  95         this.keys = null;
  96
  97         return ret;
  98     }
  99
 100     @Override
 101     public ChannelFuture createServer(final BGPPeerRegistry registry, final InetSocketAddress address, final BGPSessionValidator sessionValidator) {
 102         return this.createServer(registry, address, sessionValidator, null);
 103     }
 104
 105     @Override
 106     public ChannelFuture createServer(final BGPPeerRegistry registry, final InetSocketAddress address, final BGPSessionValidator sessionValidator, final KeyMapping keys) {
 107         final BGPServerSessionNegotiatorFactory snf = new BGPServerSessionNegotiatorFactory(sessionValidator, registry);
 108
 109         this.keys = keys;
 110         final ChannelFuture ret = super.createServer(address, new PipelineInitializer<BGPSessionImpl>() {
 111             @Override
 112             public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
 113                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
 114                 ch.pipeline().addLast(NEGOTIATOR, snf.getSessionNegotiator(null, ch, promise));
 115                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
 116             }
 117         });
 118         this.keys = null;
 119
 120         return ret;
 121     }
 122
 123     @Override
 124     protected void customizeBootstrap(final Bootstrap b) {
 125         if (this.keys != null && !this.keys.isEmpty()) {
 126             if (this.cf == null) {
 127                 throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
 128             }
 129             b.channelFactory(this.cf);
 130             b.option(MD5ChannelOption.TCP_MD5SIG, this.keys);
 131             // Make sure we are doing round-robin processing
 132             b.option(ChannelOption.MAX_MESSAGES_PER_READ, 1);
 133         }
 134     }
 135
 136     @Override
 137     protected void customizeBootstrap(final ServerBootstrap b) {
 138         if (this.keys != null && !this.keys.isEmpty()) {
 139             if (this.scf == null) {
 140                 throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
 141             }
 142             b.channelFactory(this.scf);
 143             b.option(MD5ChannelOption.TCP_MD5SIG, this.keys);
 144             // Make sure we are doing round-robin processing
 145             b.childOption(ChannelOption.MAX_MESSAGES_PER_READ, 1);
 146         }
 147     }
 148
 149 }