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.client.BGPClientSessionNegotiatorFactory;
  27 import org.opendaylight.protocol.bgp.rib.impl.server.BGPServerSessionNegotiatorFactory;
  28 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPDispatcher;
  29 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPPeerRegistry;
  30 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPServerDispatcher;
  31 import org.opendaylight.protocol.bgp.rib.impl.spi.BGPSessionValidator;
  32 import org.opendaylight.protocol.framework.AbstractDispatcher;
  33 import org.opendaylight.protocol.framework.ReconnectStrategy;
  34 import org.opendaylight.protocol.framework.ReconnectStrategyFactory;
  35 import org.opendaylight.yang.gen.v1.urn.ietf.params.xml.ns.yang.ietf.inet.types.rev100924.AsNumber;
  36
  37 /**
  38  * Implementation of BGPDispatcher.
  39  */
  40 public final class BGPDispatcherImpl extends AbstractDispatcher<BGPSessionImpl, BGPSessionListener> implements BGPDispatcher, BGPServerDispatcher, AutoCloseable {
  41     private final MD5ServerChannelFactory<?> scf;
  42     private final MD5ChannelFactory<?> cf;
  43     private final BGPHandlerFactory hf;
  44     private final Timer timer;
  45     private KeyMapping keys;
  46
  47     public BGPDispatcherImpl(final MessageRegistry messageRegistry, final Timer timer, final EventLoopGroup bossGroup,
  48             final EventLoopGroup workerGroup) {
  49         this(messageRegistry, timer, bossGroup, workerGroup, null, null);
  50     }
  51
  52     public BGPDispatcherImpl(final MessageRegistry messageRegistry, final Timer timer, final EventLoopGroup bossGroup,
  53             final EventLoopGroup workerGroup, final MD5ChannelFactory<?> cf, final MD5ServerChannelFactory<?> scf) {
  54         super(bossGroup, workerGroup);
  55         this.timer = Preconditions.checkNotNull(timer);
  56         this.hf = new BGPHandlerFactory(messageRegistry);
  57         this.cf = cf;
  58         this.scf = scf;
  59     }
  60
  61     @Override
  62     public synchronized Future<BGPSessionImpl> createClient(final InetSocketAddress address,
  63             final AsNumber remoteAs, final BGPPeerRegistry listener, final ReconnectStrategy strategy) {
  64         final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(this.timer, remoteAs, listener);
  65         return super.createClient(address, strategy, new PipelineInitializer<BGPSessionImpl>() {
  66             @Override
  67             public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
  68                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
  69                 ch.pipeline().addLast("negotiator", snf.getSessionNegotiator(null, ch, promise));
  70                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
  71             }
  72         });
  73     }
  74
  75     @Override
  76     public Future<Void> createReconnectingClient(final InetSocketAddress address,
  77             final AsNumber remoteAs, final BGPPeerRegistry listener, final ReconnectStrategyFactory connectStrategyFactory,
  78             final ReconnectStrategyFactory reestablishStrategyFactory) {
  79         return this.createReconnectingClient(address, remoteAs, listener, connectStrategyFactory, reestablishStrategyFactory,
  80                 null);
  81     }
  82
  83     @Override
  84     public void close() {
  85     }
  86
  87     @Override
  88     public synchronized Future<Void> createReconnectingClient(final InetSocketAddress address,
  89             final AsNumber remoteAs, final BGPPeerRegistry peerRegistry, final ReconnectStrategyFactory connectStrategyFactory,
  90             final ReconnectStrategyFactory reestablishStrategyFactory, final KeyMapping keys) {
  91         final BGPClientSessionNegotiatorFactory snf = new BGPClientSessionNegotiatorFactory(this.timer, remoteAs, peerRegistry);
  92
  93         this.keys = keys;
  94         final Future<Void> ret = super.createReconnectingClient(address, connectStrategyFactory,
  95                 reestablishStrategyFactory.createReconnectStrategy(), new PipelineInitializer<BGPSessionImpl>() {
  96                     @Override
  97                     public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
  98                         ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
  99                         ch.pipeline().addLast("negotiator", snf.getSessionNegotiator(null, ch, promise));
 100                         ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
 101                     }
 102                 });
 103         this.keys = null;
 104
 105         return ret;
 106     }
 107
 108     @Override
 109     public ChannelFuture createServer(final BGPPeerRegistry registry, final InetSocketAddress address, final BGPSessionValidator sessionValidator) {
 110         return this.createServer(registry, address, sessionValidator, null);
 111     }
 112
 113     @Override
 114     public ChannelFuture createServer(final BGPPeerRegistry registry, final InetSocketAddress address, final BGPSessionValidator sessionValidator, final KeyMapping keys) {
 115         final BGPServerSessionNegotiatorFactory snf = new BGPServerSessionNegotiatorFactory(this.timer, sessionValidator, registry);
 116
 117         this.keys = keys;
 118         final ChannelFuture ret = super.createServer(address, new PipelineInitializer<BGPSessionImpl>() {
 119             @Override
 120             public void initializeChannel(final SocketChannel ch, final Promise<BGPSessionImpl> promise) {
 121                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getDecoders());
 122                 ch.pipeline().addLast("negotiator", snf.getSessionNegotiator(null, ch, promise));
 123                 ch.pipeline().addLast(BGPDispatcherImpl.this.hf.getEncoders());
 124             }
 125         });
 126         this.keys = null;
 127
 128         return ret;
 129     }
 130
 131     @Override
 132     protected void customizeBootstrap(final Bootstrap b) {
 133         if (keys != null && !keys.isEmpty()) {
 134             if (cf == null) {
 135                 throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
 136             }
 137             b.channelFactory(cf);
 138             b.option(MD5ChannelOption.TCP_MD5SIG, keys);
 139         }
 140     }
 141
 142     @Override
 143     protected void customizeBootstrap(final ServerBootstrap b) {
 144         if (keys != null && !keys.isEmpty()) {
 145             if (scf == null) {
 146                 throw new UnsupportedOperationException("No key access instance available, cannot use key mapping");
 147             }
 148             b.channelFactory(scf);
 149             b.option(MD5ChannelOption.TCP_MD5SIG, keys);
 150         }
 151     }
 152
 153 }