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 import io.netty.bootstrap.Bootstrap;
  12 import io.netty.bootstrap.ServerBootstrap;
  13 import io.netty.channel.ChannelFuture;
  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 import java.net.InetSocketAddress;
  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 final Timer timer;
  43     private KeyMapping keys;
  44
  45     public BGPDispatcherImpl(final MessageRegistry messageRegistry, final Timer timer, final EventLoopGroup bossGroup,
  46             final EventLoopGroup workerGroup) {
  47         this(messageRegistry, timer, bossGroup, workerGroup, null, null);
  48     }
  49
  50     public BGPDispatcherImpl(final MessageRegistry messageRegistry, final Timer timer, final EventLoopGroup bossGroup,
  51             final EventLoopGroup workerGroup, final MD5ChannelFactory<?> cf, final MD5ServerChannelFactory<?> scf) {
  52         super(bossGroup, workerGroup);
  53         this.timer = Preconditions.checkNotNull(timer);
  54         this.hf = new BGPHandlerFactory(messageRegistry);
  55         this.cf = cf;
  56         this.scf = scf;
  57     }
  58
  59     @Override
  60     public synchronized Future<BGPSessionImpl> createClient(final InetSocketAddress address,
  61             final AsNumber remoteAs, final BGPPeerRegistry listener, final ReconnectStrategy strategy) {
  62         final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(this.timer, remoteAs, listener);
  63         return super.createClient(address, strategy, new PipelineInitializer<BGPSessionImpl>() {
  64             @Override
  65             public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
  66                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
  67                 ch.pipeline().addLast("negotiator", snf.getSessionNegotiator(null, ch, promise));
  68                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
  69             }
  70         });
  71     }
  72
  73     @Override
  74     public Future<Void> createReconnectingClient(final InetSocketAddress address,
  75             final AsNumber remoteAs, final BGPPeerRegistry listener, final ReconnectStrategyFactory connectStrategyFactory,
  76             final ReconnectStrategyFactory reestablishStrategyFactory) {
  77         return this.createReconnectingClient(address, remoteAs, listener, connectStrategyFactory, reestablishStrategyFactory,
  78                 null);
  79     }
  80
  81     @Override
  82     public void close() {
  83     }
  84
  85     @Override
  86     public synchronized Future<Void> createReconnectingClient(final InetSocketAddress address,
  87             final AsNumber remoteAs, final BGPPeerRegistry peerRegistry, final ReconnectStrategyFactory connectStrategyFactory,
  88             final ReconnectStrategyFactory reestablishStrategyFactory, final KeyMapping keys) {
  89         final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(this.timer, remoteAs, peerRegistry);
  90
  91         this.keys = keys;
  92         final Future<Void> ret = super.createReconnectingClient(address, connectStrategyFactory,
  93                 reestablishStrategyFactory.createReconnectStrategy(), new PipelineInitializer<BGPSessionImpl>() {
  94                     @Override
  95                     public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
  96                         ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
  97                         ch.pipeline().addLast("negotiator", snf.getSessionNegotiator(null, ch, promise));
  98                         ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
  99                     }
 100                 });
 101         this.keys = null;
 102
 103         return ret;
 104     }
 105
 106     @Override
 107     public ChannelFuture createServer(final BGPPeerRegistry registry, final InetSocketAddress address, final BGPSessionValidator sessionValidator) {
 108         return this.createServer(registry, address, sessionValidator, null);
 109     }
 110
 111     @Override
 112     public ChannelFuture createServer(final BGPPeerRegistry registry, final InetSocketAddress address, final BGPSessionValidator sessionValidator, final KeyMapping keys) {
 113         final BGPServerSessionNegotiatorFactory snf = new BGPServerSessionNegotiatorFactory(this.timer, sessionValidator, registry);
 114
 115         this.keys = keys;
 116         final ChannelFuture ret = super.createServer(address, new PipelineInitializer<BGPSessionImpl>() {
 117             @Override
 118             public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
 119                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
 120                 ch.pipeline().addLast("negotiator", snf.getSessionNegotiator(null, ch, promise));
 121                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
 122             }
 123         });
 124         this.keys = null;
 125
 126         return ret;
 127     }
 128
 129     @Override
 130     protected void customizeBootstrap(final Bootstrap b) {
 131         if (keys != null && !keys.isEmpty()) {
 132             if (cf == null) {
 133                 throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
 134             }
 135             b.channelFactory(cf);
 136             b.option(MD5ChannelOption.TCP_MD5SIG, keys);
 137         }
 138     }
 139
 140     @Override
 141     protected void customizeBootstrap(final ServerBootstrap b) {
 142         if (keys != null && !keys.isEmpty()) {
 143             if (scf == null) {
 144                 throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
 145             }
 146             b.channelFactory(scf);
 147             b.option(MD5ChannelOption.TCP_MD5SIG, keys);
 148         }
 149     }
 150
 151 }