opendaylight/netconf/netconf-client/src/main/java/org/opendaylight/controller/netconf/client/NetconfSshClientDispatcher.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.IOException;
  18 import java.net.InetSocketAddress;
  19
  20 import org.opendaylight.controller.netconf.util.AbstractChannelInitializer;
  21 import org.opendaylight.controller.netconf.util.handler.ssh.SshHandler;
  22 import org.opendaylight.controller.netconf.util.handler.ssh.authentication.AuthenticationHandler;
  23 import org.opendaylight.controller.netconf.util.handler.ssh.client.Invoker;
  24 import org.opendaylight.protocol.framework.ReconnectStrategy;
  25 import org.opendaylight.protocol.framework.ReconnectStrategyFactory;
  26 import org.opendaylight.protocol.framework.SessionListenerFactory;
  27
  28 import com.google.common.base.Optional;
  29
  30 public class NetconfSshClientDispatcher extends NetconfClientDispatcher {
  31
  32     private final AuthenticationHandler authHandler;
  33     private final HashedWheelTimer timer;
  34     private final NetconfClientSessionNegotiatorFactory negotatorFactory;
  35
  36     public NetconfSshClientDispatcher(AuthenticationHandler authHandler, EventLoopGroup bossGroup,
  37             EventLoopGroup workerGroup, long connectionTimeoutMillis) {
  38         super(bossGroup, workerGroup, connectionTimeoutMillis);
  39         this.authHandler = authHandler;
  40         this.timer = new HashedWheelTimer();
  41         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer, Optional.<String>absent(), connectionTimeoutMillis);
  42     }
  43
  44     public NetconfSshClientDispatcher(AuthenticationHandler authHandler, EventLoopGroup bossGroup,
  45             EventLoopGroup workerGroup, String additionalHeader, long socketTimeoutMillis) {
  46         super(bossGroup, workerGroup, additionalHeader, socketTimeoutMillis);
  47         this.authHandler = authHandler;
  48         this.timer = new HashedWheelTimer();
  49         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer, Optional.of(additionalHeader), socketTimeoutMillis);
  50     }
  51
  52     @Override
  53     public Future<NetconfClientSession> createClient(InetSocketAddress address,
  54             final NetconfClientSessionListener sessionListener, ReconnectStrategy strat) {
  55         return super.createClient(address, strat, new PipelineInitializer<NetconfClientSession>() {
  56
  57             @Override
  58             public void initializeChannel(SocketChannel arg0, Promise<NetconfClientSession> arg1) {
  59                 new NetconfSshClientInitializer(authHandler, negotatorFactory, sessionListener).initialize(arg0, arg1);
  60             }
  61
  62         });
  63     }
  64
  65     @Override
  66     public Future<Void> createReconnectingClient(final InetSocketAddress address,
  67             final NetconfClientSessionListener listener,
  68             final ReconnectStrategyFactory connectStrategyFactory, final ReconnectStrategy reestablishStrategy) {
  69         final NetconfSshClientInitializer init = new NetconfSshClientInitializer(authHandler, negotatorFactory, listener);
  70
  71         return super.createReconnectingClient(address, connectStrategyFactory, reestablishStrategy,
  72                 new PipelineInitializer<NetconfClientSession>() {
  73             @Override
  74             public void initializeChannel(final SocketChannel ch, final Promise<NetconfClientSession> promise) {
  75                 init.initialize(ch, promise);
  76             }
  77         });
  78     }
  79
  80     private static final class NetconfSshClientInitializer extends AbstractChannelInitializer<NetconfClientSession> {
  81
  82         private final AuthenticationHandler authenticationHandler;
  83         private final NetconfClientSessionNegotiatorFactory negotiatorFactory;
  84         private final NetconfClientSessionListener sessionListener;
  85
  86         public NetconfSshClientInitializer(AuthenticationHandler authHandler,
  87                 NetconfClientSessionNegotiatorFactory negotiatorFactory,
  88                 final NetconfClientSessionListener sessionListener) {
  89             this.authenticationHandler = authHandler;
  90             this.negotiatorFactory = negotiatorFactory;
  91             this.sessionListener = sessionListener;
  92         }
  93
  94         @Override
  95         public void initialize(SocketChannel ch, Promise<NetconfClientSession> promise) {
  96             try {
  97                 Invoker invoker = Invoker.subsystem("netconf");
  98                 ch.pipeline().addFirst(new SshHandler(authenticationHandler, invoker));
  99                 super.initialize(ch,promise);
 100             } catch (IOException e) {
 101                 throw new RuntimeException(e);
 102             }
 103         }
 104
 105         @Override
 106         protected void initializeAfterDecoder(SocketChannel ch, Promise<NetconfClientSession> promise) {
 107             ch.pipeline().addLast("negotiator", negotiatorFactory.getSessionNegotiator(new SessionListenerFactory<NetconfClientSessionListener>() {
 108                 @Override
 109                 public NetconfClientSessionListener getSessionListener() {
 110                     return sessionListener;
 111                 }
 112             }, ch, promise));
 113
 114         }
 115     }
 116 }