netconf/netconf-client/src/main/java/org/opendaylight/netconf/client/SshClientChannelInitializer.java

   1 /*
   2  * Copyright (c) 2014 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 package org.opendaylight.netconf.client;
   9
  10 import io.netty.channel.Channel;
  11 import io.netty.util.concurrent.Promise;
  12 import java.io.IOException;
  13 import org.opendaylight.netconf.nettyutil.AbstractChannelInitializer;
  14 import org.opendaylight.netconf.nettyutil.handler.ssh.authentication.AuthenticationHandler;
  15 import org.opendaylight.netconf.nettyutil.handler.ssh.client.AsyncSshHandler;
  16
  17 final class SshClientChannelInitializer extends AbstractChannelInitializer<NetconfClientSession> {
  18
  19     private final AuthenticationHandler authenticationHandler;
  20     private final NetconfClientSessionNegotiatorFactory negotiatorFactory;
  21     private final NetconfClientSessionListener sessionListener;
  22
  23     SshClientChannelInitializer(final AuthenticationHandler authHandler,
  24                                 final NetconfClientSessionNegotiatorFactory negotiatorFactory,
  25                                 final NetconfClientSessionListener sessionListener) {
  26         this.authenticationHandler = authHandler;
  27         this.negotiatorFactory = negotiatorFactory;
  28         this.sessionListener = sessionListener;
  29     }
  30
  31     @Override
  32     public void initialize(final Channel ch, final Promise<NetconfClientSession> promise) {
  33         try {
  34             // ssh handler has to be the first handler in pipeline
  35             ch.pipeline().addFirst(AsyncSshHandler.createForNetconfSubsystem(authenticationHandler, promise));
  36             super.initialize(ch, promise);
  37         } catch (final IOException e) {
  38             throw new RuntimeException(e);
  39         }
  40     }
  41
  42     @Override
  43     protected void initializeSessionNegotiator(final Channel ch,
  44                                                final Promise<NetconfClientSession> promise) {
  45         ch.pipeline().addAfter(NETCONF_MESSAGE_DECODER, AbstractChannelInitializer.NETCONF_SESSION_NEGOTIATOR,
  46                 negotiatorFactory.getSessionNegotiator(() -> sessionListener, ch, promise));
  47     }
  48 }