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
  17 import java.io.Closeable;
  18 import java.net.InetSocketAddress;
  19
  20 import org.opendaylight.controller.netconf.api.NetconfMessage;
  21 import org.opendaylight.controller.netconf.api.NetconfSession;
  22 import org.opendaylight.controller.netconf.api.NetconfTerminationReason;
  23 import org.opendaylight.controller.netconf.util.AbstractChannelInitializer;
  24 import org.opendaylight.protocol.framework.AbstractDispatcher;
  25 import org.opendaylight.protocol.framework.ReconnectStrategy;
  26 import org.opendaylight.protocol.framework.SessionListener;
  27 import org.opendaylight.protocol.framework.SessionListenerFactory;
  28 import org.slf4j.Logger;
  29 import org.slf4j.LoggerFactory;
  30
  31 import com.google.common.base.Optional;
  32
  33 public class NetconfClientDispatcher extends AbstractDispatcher<NetconfClientSession, NetconfClientSessionListener> implements Closeable {
  34
  35     private static final Logger logger = LoggerFactory.getLogger(NetconfClient.class);
  36
  37     private final NetconfClientSessionNegotiatorFactory negotatorFactory;
  38     private final HashedWheelTimer timer;
  39
  40     public NetconfClientDispatcher(EventLoopGroup bossGroup, EventLoopGroup workerGroup) {
  41         super(bossGroup, workerGroup);
  42         timer = new HashedWheelTimer();
  43         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer, Optional.<String>absent());
  44     }
  45
  46     public NetconfClientDispatcher(EventLoopGroup bossGroup, EventLoopGroup workerGroup, String additionalHeader) {
  47         super(bossGroup, workerGroup);
  48         timer = new HashedWheelTimer();
  49         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer, Optional.of(additionalHeader));
  50     }
  51
  52     public Future<NetconfClientSession> createClient(InetSocketAddress address,
  53             final NetconfClientSessionListener sessionListener, ReconnectStrategy strat) {
  54
  55         return super.createClient(address, strat, new PipelineInitializer<NetconfClientSession>() {
  56
  57             @Override
  58             public void initializeChannel(final SocketChannel ch, final Promise<NetconfClientSession> promise) {
  59                 initialize(ch, promise);
  60             }
  61
  62             private void initialize(SocketChannel ch, Promise<NetconfClientSession> promise) {
  63                 new ClientChannelInitializer( negotatorFactory, sessionListener).initialize(ch, promise);
  64             }
  65         });
  66     }
  67
  68     private static class ClientChannelInitializer extends AbstractChannelInitializer {
  69
  70         private final NetconfClientSessionNegotiatorFactory negotiatorFactory;
  71         private final NetconfClientSessionListener sessionListener;
  72
  73         private ClientChannelInitializer(NetconfClientSessionNegotiatorFactory negotiatorFactory,
  74                                             NetconfClientSessionListener sessionListener) {
  75             this.negotiatorFactory = negotiatorFactory;
  76             this.sessionListener = sessionListener;
  77         }
  78
  79         @Override
  80         public void initialize(SocketChannel ch, Promise<? extends NetconfSession> promise) {
  81                 super.initialize(ch,promise);
  82         }
  83
  84         @Override
  85         protected void initializeAfterDecoder(SocketChannel ch, Promise<? extends NetconfSession> promise) {
  86             ch.pipeline().addLast("negotiator", negotiatorFactory.getSessionNegotiator(new SessionListenerFactory() {
  87                 @Override
  88                 public SessionListener<NetconfMessage, NetconfClientSession, NetconfTerminationReason> getSessionListener() {
  89                     return sessionListener;
  90                 }
  91             }, ch, promise));
  92         }
  93
  94     }
  95     @Override
  96     public void close() {
  97         try {
  98             timer.stop();
  99         } catch (Exception e) {
 100             logger.debug("Ignoring exception while closing {}", timer, e);
 101         }
 102     }
 103 }