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