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.util.AbstractChannelInitializer;
  21 import org.opendaylight.protocol.framework.AbstractDispatcher;
  22 import org.opendaylight.protocol.framework.ReconnectStrategy;
  23 import org.opendaylight.protocol.framework.ReconnectStrategyFactory;
  24 import org.opendaylight.protocol.framework.SessionListenerFactory;
  25 import org.slf4j.Logger;
  26 import org.slf4j.LoggerFactory;
  27
  28 import com.google.common.base.Optional;
  29
  30 public class NetconfClientDispatcher extends AbstractDispatcher<NetconfClientSession, NetconfClientSessionListener> implements Closeable {
  31
  32     private static final Logger logger = LoggerFactory.getLogger(NetconfClientDispatcher.class);
  33
  34     private final NetconfClientSessionNegotiatorFactory negotatorFactory;
  35     private final HashedWheelTimer timer;
  36
  37     public NetconfClientDispatcher(EventLoopGroup bossGroup, EventLoopGroup workerGroup, long clientConnectionTimeoutMillis) {
  38         super(bossGroup, workerGroup);
  39         timer = new HashedWheelTimer();
  40         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer, Optional.<String>absent(), clientConnectionTimeoutMillis);
  41     }
  42
  43     public NetconfClientDispatcher(EventLoopGroup bossGroup, EventLoopGroup workerGroup, String additionalHeader, long connectionTimeoutMillis) {
  44         super(bossGroup, workerGroup);
  45         timer = new HashedWheelTimer();
  46         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer, Optional.of(additionalHeader), connectionTimeoutMillis);
  47     }
  48
  49     public Future<NetconfClientSession> createClient(InetSocketAddress address,
  50             final NetconfClientSessionListener sessionListener, ReconnectStrategy strat) {
  51
  52         return super.createClient(address, strat, new PipelineInitializer<NetconfClientSession>() {
  53
  54             @Override
  55             public void initializeChannel(final SocketChannel ch, final Promise<NetconfClientSession> promise) {
  56                 initialize(ch, promise);
  57             }
  58
  59             private void initialize(SocketChannel ch, Promise<NetconfClientSession> promise) {
  60                 new ClientChannelInitializer( negotatorFactory, sessionListener).initialize(ch, promise);
  61             }
  62         });
  63     }
  64
  65     public Future<Void> createReconnectingClient(final InetSocketAddress address,
  66             final NetconfClientSessionListener listener,
  67             final ReconnectStrategyFactory connectStrategyFactory, final ReconnectStrategy reestablishStrategy) {
  68         final ClientChannelInitializer init = new ClientChannelInitializer(negotatorFactory, listener);
  69
  70         return super.createReconnectingClient(address, connectStrategyFactory, reestablishStrategy,
  71                 new PipelineInitializer<NetconfClientSession>() {
  72             @Override
  73             public void initializeChannel(final SocketChannel ch, final Promise<NetconfClientSession> promise) {
  74                 init.initialize(ch, promise);
  75             }
  76         });
  77     }
  78
  79     private static class ClientChannelInitializer extends AbstractChannelInitializer<NetconfClientSession> {
  80
  81         private final NetconfClientSessionNegotiatorFactory negotiatorFactory;
  82         private final NetconfClientSessionListener sessionListener;
  83
  84         private ClientChannelInitializer(NetconfClientSessionNegotiatorFactory negotiatorFactory,
  85                 NetconfClientSessionListener sessionListener) {
  86             this.negotiatorFactory = negotiatorFactory;
  87             this.sessionListener = sessionListener;
  88         }
  89
  90         @Override
  91         protected void initializeAfterDecoder(SocketChannel ch, Promise<NetconfClientSession> promise) {
  92             ch.pipeline().addLast("negotiator", negotiatorFactory.getSessionNegotiator(
  93                     new SessionListenerFactory<NetconfClientSessionListener>() {
  94                         @Override
  95                         public NetconfClientSessionListener getSessionListener() {
  96                             return sessionListener;
  97                         }
  98                     }, ch, promise));
  99         }
 100     }
 101
 102     @Override
 103     public void close() {
 104         try {
 105             timer.stop();
 106         } catch (Exception e) {
 107             logger.debug("Ignoring exception while closing {}", timer, e);
 108         }
 109     }
 110 }