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 com.google.common.base.Optional;
  12 import io.netty.channel.EventLoopGroup;
  13 import io.netty.channel.socket.SocketChannel;
  14 import io.netty.util.HashedWheelTimer;
  15 import io.netty.util.concurrent.Future;
  16 import io.netty.util.concurrent.Promise;
  17 import org.opendaylight.controller.netconf.api.NetconfMessage;
  18 import org.opendaylight.controller.netconf.api.NetconfSession;
  19 import org.opendaylight.controller.netconf.api.NetconfTerminationReason;
  20 import org.opendaylight.controller.netconf.util.AbstractChannelInitializer;
  21 import org.opendaylight.protocol.framework.AbstractDispatcher;
  22 import org.opendaylight.protocol.framework.ReconnectStrategy;
  23 import org.opendaylight.protocol.framework.SessionListener;
  24 import org.opendaylight.protocol.framework.SessionListenerFactory;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 import java.io.Closeable;
  29 import java.net.InetSocketAddress;
  30
  31 public class NetconfClientDispatcher extends AbstractDispatcher<NetconfClientSession, NetconfClientSessionListener> implements Closeable {
  32
  33     private static final Logger logger = LoggerFactory.getLogger(NetconfClient.class);
  34
  35     private final NetconfClientSessionNegotiatorFactory negotatorFactory;
  36     private final HashedWheelTimer timer;
  37
  38     public NetconfClientDispatcher(EventLoopGroup bossGroup, EventLoopGroup workerGroup, long clientConnectionTimeoutMillis) {
  39         super(bossGroup, workerGroup);
  40         timer = new HashedWheelTimer();
  41         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer, Optional.<String>absent(), clientConnectionTimeoutMillis);
  42     }
  43
  44     public NetconfClientDispatcher(EventLoopGroup bossGroup, EventLoopGroup workerGroup, String additionalHeader, long connectionTimeoutMillis) {
  45         super(bossGroup, workerGroup);
  46         timer = new HashedWheelTimer();
  47         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer, Optional.of(additionalHeader), connectionTimeoutMillis);
  48     }
  49
  50     public Future<NetconfClientSession> createClient(InetSocketAddress address,
  51             final NetconfClientSessionListener sessionListener, ReconnectStrategy strat) {
  52
  53         return super.createClient(address, strat, new PipelineInitializer<NetconfClientSession>() {
  54
  55             @Override
  56             public void initializeChannel(final SocketChannel ch, final Promise<NetconfClientSession> promise) {
  57                 initialize(ch, promise);
  58             }
  59
  60             private void initialize(SocketChannel ch, Promise<NetconfClientSession> promise) {
  61                 new ClientChannelInitializer( negotatorFactory, sessionListener).initialize(ch, promise);
  62             }
  63         });
  64     }
  65
  66     private static class ClientChannelInitializer extends AbstractChannelInitializer {
  67
  68         private final NetconfClientSessionNegotiatorFactory negotiatorFactory;
  69         private final NetconfClientSessionListener sessionListener;
  70
  71         private ClientChannelInitializer(NetconfClientSessionNegotiatorFactory negotiatorFactory,
  72                                             NetconfClientSessionListener sessionListener) {
  73             this.negotiatorFactory = negotiatorFactory;
  74             this.sessionListener = sessionListener;
  75         }
  76
  77         @Override
  78         public void initialize(SocketChannel ch, Promise<? extends NetconfSession> promise) {
  79                 super.initialize(ch,promise);
  80         }
  81
  82         @Override
  83         protected void initializeAfterDecoder(SocketChannel ch, Promise<? extends NetconfSession> promise) {
  84             ch.pipeline().addLast("negotiator", negotiatorFactory.getSessionNegotiator(new SessionListenerFactory() {
  85                 @Override
  86                 public SessionListener<NetconfMessage, NetconfClientSession, NetconfTerminationReason> getSessionListener() {
  87                     return sessionListener;
  88                 }
  89             }, ch, promise));
  90         }
  91
  92     }
  93     @Override
  94     public void close() {
  95         try {
  96             timer.stop();
  97         } catch (Exception e) {
  98             logger.debug("Ignoring exception while closing {}", timer, e);
  99         }
 100     }
 101 }