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.ChannelHandler;
  12 import io.netty.channel.EventLoopGroup;
  13 import io.netty.channel.socket.SocketChannel;
  14 import io.netty.util.HashedWheelTimer;
  15 import io.netty.util.concurrent.Future;
  16 import io.netty.util.concurrent.Promise;
  17
  18 import java.io.IOException;
  19 import java.net.InetSocketAddress;
  20
  21 import org.opendaylight.controller.netconf.api.NetconfMessage;
  22 import org.opendaylight.controller.netconf.api.NetconfSession;
  23 import org.opendaylight.controller.netconf.api.NetconfTerminationReason;
  24 import org.opendaylight.controller.netconf.util.AbstractChannelInitializer;
  25 import org.opendaylight.controller.netconf.util.handler.ssh.SshHandler;
  26 import org.opendaylight.controller.netconf.util.handler.ssh.authentication.AuthenticationHandler;
  27 import org.opendaylight.controller.netconf.util.handler.ssh.client.Invoker;
  28 import org.opendaylight.controller.netconf.util.messages.NetconfMessageFactory;
  29 import org.opendaylight.protocol.framework.ProtocolHandlerFactory;
  30 import org.opendaylight.protocol.framework.ProtocolMessageDecoder;
  31 import org.opendaylight.protocol.framework.ProtocolMessageEncoder;
  32 import org.opendaylight.protocol.framework.ReconnectStrategy;
  33 import org.opendaylight.protocol.framework.SessionListener;
  34 import org.opendaylight.protocol.framework.SessionListenerFactory;
  35
  36 import com.google.common.base.Optional;
  37
  38 public class NetconfSshClientDispatcher extends NetconfClientDispatcher {
  39
  40     private AuthenticationHandler authHandler;
  41     private HashedWheelTimer timer;
  42     private NetconfClientSessionNegotiatorFactory negotatorFactory;
  43
  44     public NetconfSshClientDispatcher(AuthenticationHandler authHandler, EventLoopGroup bossGroup,
  45             EventLoopGroup workerGroup) {
  46         super(bossGroup, workerGroup);
  47         this.authHandler = authHandler;
  48         this.timer = new HashedWheelTimer();
  49         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer, Optional.<String>absent());
  50     }
  51
  52     public NetconfSshClientDispatcher(AuthenticationHandler authHandler, EventLoopGroup bossGroup,
  53             EventLoopGroup workerGroup, String additionalHeader) {
  54         super(bossGroup, workerGroup, additionalHeader);
  55         this.authHandler = authHandler;
  56         this.timer = new HashedWheelTimer();
  57         this.negotatorFactory = new NetconfClientSessionNegotiatorFactory(timer, Optional.of(additionalHeader));
  58     }
  59
  60     public Future<NetconfClientSession> createClient(InetSocketAddress address,
  61             final NetconfClientSessionListener sessionListener, ReconnectStrategy strat) {
  62         return super.createClient(address, strat, new PipelineInitializer<NetconfClientSession>() {
  63
  64             @Override
  65             public void initializeChannel(SocketChannel arg0, Promise<NetconfClientSession> arg1) {
  66                 new NetconfSshClientInitializer(authHandler, negotatorFactory, sessionListener).initialize(arg0, arg1);
  67             }
  68
  69         });
  70     }
  71
  72     private static final class NetconfSshClientInitializer extends AbstractChannelInitializer {
  73
  74         private final NetconfHandlerFactory handlerFactory;
  75         private final AuthenticationHandler authenticationHandler;
  76         private final NetconfClientSessionNegotiatorFactory negotiatorFactory;
  77         private final NetconfClientSessionListener sessionListener;
  78
  79         public NetconfSshClientInitializer(AuthenticationHandler authHandler,
  80                 NetconfClientSessionNegotiatorFactory negotiatorFactory,
  81                 final NetconfClientSessionListener sessionListener) {
  82             this.handlerFactory = new NetconfHandlerFactory(new NetconfMessageFactory());
  83             this.authenticationHandler = authHandler;
  84             this.negotiatorFactory = negotiatorFactory;
  85             this.sessionListener = sessionListener;
  86         }
  87
  88         @Override
  89         public void initialize(SocketChannel ch, Promise<? extends NetconfSession> promise) {
  90             try {
  91                 Invoker invoker = Invoker.subsystem("netconf");
  92                 ch.pipeline().addFirst(new SshHandler(authenticationHandler, invoker));
  93                 super.initialize(ch,promise);
  94             } catch (IOException e) {
  95                 throw new RuntimeException(e);
  96             }
  97         }
  98
  99         @Override
 100         protected void initializeAfterDecoder(SocketChannel ch, Promise<? extends NetconfSession> promise) {
 101             ch.pipeline().addLast("negotiator", negotiatorFactory.getSessionNegotiator(new SessionListenerFactory() {
 102                 @Override
 103                 public SessionListener<NetconfMessage, NetconfClientSession, NetconfTerminationReason> getSessionListener() {
 104                     return sessionListener;
 105                 }
 106             }, ch, promise));
 107
 108         }
 109     }
 110
 111     private static final class NetconfHandlerFactory extends ProtocolHandlerFactory<NetconfMessage> {
 112
 113         public NetconfHandlerFactory(final NetconfMessageFactory msgFactory) {
 114             super(msgFactory);
 115         }
 116
 117         @Override
 118         public ChannelHandler[] getEncoders() {
 119             return new ChannelHandler[] { new ProtocolMessageEncoder(this.msgFactory) };
 120         }
 121
 122         @Override
 123         public ChannelHandler[] getDecoders() {
 124             return new ChannelHandler[] { new ProtocolMessageDecoder(this.msgFactory) };
 125         }
 126     }
 127 }