pcep/pcc-mock/src/main/java/org/opendaylight/protocol/pcep/pcc/mock/protocol/PCCDispatcherImpl.java

   1 /*
   2  * Copyright (c) 2015 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
   9 package org.opendaylight.protocol.pcep.pcc.mock.protocol;
  10
  11 import io.netty.bootstrap.Bootstrap;
  12 import io.netty.channel.ChannelHandlerContext;
  13 import io.netty.channel.ChannelInboundHandlerAdapter;
  14 import io.netty.channel.ChannelInitializer;
  15 import io.netty.channel.ChannelOption;
  16 import io.netty.channel.EventLoopGroup;
  17 import io.netty.channel.epoll.Epoll;
  18 import io.netty.channel.epoll.EpollChannelOption;
  19 import io.netty.channel.epoll.EpollEventLoopGroup;
  20 import io.netty.channel.epoll.EpollMode;
  21 import io.netty.channel.epoll.EpollSocketChannel;
  22 import io.netty.channel.nio.NioEventLoopGroup;
  23 import io.netty.channel.socket.SocketChannel;
  24 import io.netty.channel.socket.nio.NioSocketChannel;
  25 import io.netty.util.concurrent.Future;
  26 import java.net.InetSocketAddress;
  27 import java.util.concurrent.ExecutionException;
  28 import org.eclipse.jdt.annotation.NonNull;
  29 import org.opendaylight.protocol.concepts.KeyMapping;
  30 import org.opendaylight.protocol.pcep.MessageRegistry;
  31 import org.opendaylight.protocol.pcep.PCEPPeerProposal;
  32 import org.opendaylight.protocol.pcep.PCEPSession;
  33 import org.opendaylight.protocol.pcep.PCEPSessionListenerFactory;
  34 import org.opendaylight.protocol.pcep.PCEPSessionNegotiatorFactory;
  35 import org.opendaylight.protocol.pcep.PCEPSessionNegotiatorFactoryDependencies;
  36 import org.opendaylight.protocol.pcep.impl.PCEPHandlerFactory;
  37 import org.opendaylight.protocol.pcep.pcc.mock.api.PCCDispatcher;
  38 import org.opendaylight.yangtools.yang.common.Uint64;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 public final class PCCDispatcherImpl implements PCCDispatcher, AutoCloseable {
  43
  44     private static final Logger LOG = LoggerFactory.getLogger(PCCDispatcherImpl.class);
  45
  46     private static final int CONNECT_TIMEOUT = 2000;
  47
  48     private final PCEPHandlerFactory factory;
  49     private final EventLoopGroup workerGroup;
  50
  51     public PCCDispatcherImpl(final @NonNull MessageRegistry registry) {
  52         if (Epoll.isAvailable()) {
  53             workerGroup = new EpollEventLoopGroup();
  54         } else {
  55             workerGroup = new NioEventLoopGroup();
  56         }
  57         factory = new PCEPHandlerFactory(registry);
  58     }
  59
  60     @Override
  61     public Future<PCEPSession> createClient(final InetSocketAddress remoteAddress, final long reconnectTime,
  62             final PCEPSessionListenerFactory listenerFactory, final PCEPSessionNegotiatorFactory negotiatorFactory,
  63             final KeyMapping keys, final InetSocketAddress localAddress) {
  64         return createClient(remoteAddress, reconnectTime, listenerFactory, negotiatorFactory, keys, localAddress,
  65             Uint64.ONE);
  66     }
  67
  68     @Override
  69     @SuppressWarnings("unchecked")
  70     public Future<PCEPSession> createClient(final InetSocketAddress remoteAddress, final long reconnectTime,
  71             final PCEPSessionListenerFactory listenerFactory, final PCEPSessionNegotiatorFactory negotiatorFactory,
  72             final KeyMapping keys, final InetSocketAddress localAddress, final Uint64 dbVersion) {
  73         final Bootstrap b = new Bootstrap();
  74         b.group(workerGroup);
  75         b.localAddress(localAddress);
  76         setChannelFactory(b, keys);
  77         b.option(ChannelOption.SO_KEEPALIVE, true);
  78         b.option(ChannelOption.SO_REUSEADDR, true);
  79         b.option(ChannelOption.RCVBUF_ALLOCATOR, new io.netty.channel.FixedRecvByteBufAllocator(1));
  80         final long retryTimer = reconnectTime == -1 ? 0 : reconnectTime;
  81         final PCCReconnectPromise promise =
  82                 new PCCReconnectPromise(remoteAddress, (int) retryTimer, CONNECT_TIMEOUT, b);
  83         final ChannelInitializer<SocketChannel> channelInitializer = new ChannelInitializer<>() {
  84             @Override
  85             protected void initChannel(final SocketChannel ch) {
  86                 ch.pipeline().addLast(factory.getDecoders());
  87                 ch.pipeline().addLast("negotiator", negotiatorFactory.getSessionNegotiator(
  88                         new PCEPSessionNegotiatorFactoryDependencies() {
  89                             @Override
  90                             public PCEPSessionListenerFactory getListenerFactory() {
  91                                 return listenerFactory;
  92                             }
  93
  94                             @Override
  95                             public PCEPPeerProposal getPeerProposal() {
  96                                 return new PCCPeerProposal(dbVersion);
  97                             }
  98                         }, ch, promise));
  99                 ch.pipeline().addLast(factory.getEncoders());
 100                 ch.pipeline().addLast(new ChannelInboundHandlerAdapter() {
 101                     @Override
 102                     public void channelInactive(final ChannelHandlerContext ctx) {
 103                         if (promise.isCancelled()) {
 104                             return;
 105                         }
 106
 107                         if (!promise.isInitialConnectFinished()) {
 108                             LOG.debug("Connection to {} was dropped during negotiation, reattempting", remoteAddress);
 109                             return;
 110                         }
 111                         LOG.debug("Reconnecting after connection to {} was dropped", remoteAddress);
 112                         PCCDispatcherImpl.this.createClient(
 113                                 remoteAddress,
 114                                 reconnectTime,
 115                                 listenerFactory,
 116                                 negotiatorFactory,
 117                                 keys,
 118                                 localAddress,
 119                                 dbVersion);
 120                     }
 121                 });
 122             }
 123         };
 124         b.handler(channelInitializer);
 125         promise.connect();
 126         return promise;
 127     }
 128
 129     private static void setChannelFactory(final Bootstrap bootstrap, final KeyMapping keys) {
 130         if (Epoll.isAvailable()) {
 131             bootstrap.channel(EpollSocketChannel.class);
 132             bootstrap.option(EpollChannelOption.EPOLL_MODE, EpollMode.LEVEL_TRIGGERED);
 133         } else {
 134             bootstrap.channel(NioSocketChannel.class);
 135         }
 136         if (!keys.isEmpty()) {
 137             if (Epoll.isAvailable()) {
 138                 bootstrap.option(EpollChannelOption.TCP_MD5SIG, keys.asMap());
 139             } else {
 140                 throw new UnsupportedOperationException(Epoll.unavailabilityCause().getCause());
 141             }
 142         }
 143     }
 144
 145     @Override
 146     public void close() {
 147         try {
 148             workerGroup.shutdownGracefully().get();
 149         } catch (final InterruptedException | ExecutionException e) {
 150             LOG.warn("Failed to properly close dispatcher.", e);
 151         }
 152     }
 153 }