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