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.api.NetconfSession;
  21 import org.opendaylight.controller.netconf.util.AbstractChannelInitializer;
  22 import org.opendaylight.controller.netconf.util.handler.ssh.SshHandler;
  23 import org.opendaylight.controller.netconf.util.handler.ssh.authentication.AuthenticationHandler;
  24 import org.opendaylight.controller.netconf.util.handler.ssh.client.Invoker;
  25 import org.opendaylight.protocol.framework.ReconnectStrategy;
  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     private static final class NetconfSshClientInitializer extends AbstractChannelInitializer {
  66
  67         private final AuthenticationHandler authenticationHandler;
  68         private final NetconfClientSessionNegotiatorFactory negotiatorFactory;
  69         private final NetconfClientSessionListener sessionListener;
  70
  71         public NetconfSshClientInitializer(AuthenticationHandler authHandler,
  72                 NetconfClientSessionNegotiatorFactory negotiatorFactory,
  73                 final NetconfClientSessionListener sessionListener) {
  74             this.authenticationHandler = authHandler;
  75             this.negotiatorFactory = negotiatorFactory;
  76             this.sessionListener = sessionListener;
  77         }
  78
  79         @Override
  80         public void initialize(SocketChannel ch, Promise<? extends NetconfSession> promise) {
  81             try {
  82                 Invoker invoker = Invoker.subsystem("netconf");
  83                 ch.pipeline().addFirst(new SshHandler(authenticationHandler, invoker));
  84                 super.initialize(ch,promise);
  85             } catch (IOException e) {
  86                 throw new RuntimeException(e);
  87             }
  88         }
  89
  90         @Override
  91         protected void initializeAfterDecoder(SocketChannel ch, Promise<? extends NetconfSession> promise) {
  92             ch.pipeline().addLast("negotiator", negotiatorFactory.getSessionNegotiator(new SessionListenerFactory<NetconfClientSessionListener>() {
  93                 @Override
  94                 public NetconfClientSessionListener getSessionListener() {
  95                     return sessionListener;
  96                 }
  97             }, ch, promise));
  98
  99         }
 100     }
 101 }