opendaylight/netconf/netconf-client/src/main/java/org/opendaylight/controller/netconf/client/NetconfClientDispatcher.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
   9 package org.opendaylight.controller.netconf.client;
  10
  11 import io.netty.channel.EventLoopGroup;
  12 import io.netty.channel.socket.SocketChannel;
  13 import io.netty.util.HashedWheelTimer;
  14 import io.netty.util.concurrent.Future;
  15 import io.netty.util.concurrent.Promise;
  16 import java.io.Closeable;
  17 import java.net.InetSocketAddress;
  18 import org.opendaylight.controller.netconf.api.NetconfMessage;
  19 import org.opendaylight.controller.netconf.api.NetconfSession;
  20 import org.opendaylight.controller.netconf.api.NetconfTerminationReason;
  21 import org.opendaylight.controller.netconf.util.AbstractChannelInitializer;
  22 import org.opendaylight.protocol.framework.AbstractDispatcher;
  23 import org.opendaylight.protocol.framework.ReconnectStrategy;
  24 import org.opendaylight.protocol.framework.SessionListener;
  25 import org.opendaylight.protocol.framework.SessionListenerFactory;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 public class NetconfClientDispatcher extends AbstractDispatcher<NetconfClientSession, NetconfClientSessionListener> implements Closeable {
  30
  31     private static final Logger logger = LoggerFactory.getLogger(NetconfClient.class);
  32
  33     private final NetconfClientSessionNegotiatorFactory negotatorFactory;
  34     private final HashedWheelTimer timer;
  35
  36     public NetconfClientDispatcher(EventLoopGroup bossGroup, EventLoopGroup workerGroup) {
  37         super(bossGroup, workerGroup);
  38         timer = new HashedWheelTimer();
  39         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer);
  40     }
  41
  42     public Future<NetconfClientSession> createClient(InetSocketAddress address,
  43             final NetconfClientSessionListener sessionListener, ReconnectStrategy strat) {
  44
  45         return super.createClient(address, strat, new PipelineInitializer<NetconfClientSession>() {
  46
  47             @Override
  48             public void initializeChannel(final SocketChannel ch, final Promise<NetconfClientSession> promise) {
  49                 initialize(ch, promise);
  50             }
  51
  52             private void initialize(SocketChannel ch, Promise<NetconfClientSession> promise) {
  53                 new ClientChannelInitializer( negotatorFactory, sessionListener).initialize(ch, promise);
  54             }
  55         });
  56     }
  57
  58     private static class ClientChannelInitializer extends AbstractChannelInitializer {
  59
  60         private final NetconfClientSessionNegotiatorFactory negotiatorFactory;
  61         private final NetconfClientSessionListener sessionListener;
  62
  63         private ClientChannelInitializer(NetconfClientSessionNegotiatorFactory negotiatorFactory,
  64                                             NetconfClientSessionListener sessionListener) {
  65             this.negotiatorFactory = negotiatorFactory;
  66             this.sessionListener = sessionListener;
  67         }
  68
  69         @Override
  70         public void initialize(SocketChannel ch, Promise<? extends NetconfSession> promise) {
  71                 super.initialize(ch,promise);
  72         }
  73
  74         @Override
  75         protected void initializeAfterDecoder(SocketChannel ch, Promise<? extends NetconfSession> promise) {
  76             ch.pipeline().addLast("negotiator", negotiatorFactory.getSessionNegotiator(new SessionListenerFactory() {
  77                 @Override
  78                 public SessionListener<NetconfMessage, NetconfClientSession, NetconfTerminationReason> getSessionListener() {
  79                     return sessionListener;
  80                 }
  81             }, ch, promise));
  82         }
  83
  84     }
  85     @Override
  86     public void close() {
  87         try {
  88             timer.stop();
  89         } catch (Exception e) {
  90             logger.debug("Ignoring exception while closing {}", timer, e);
  91         }
  92     }
  93 }