netconf/netconf-netty-util/src/main/java/org/opendaylight/netconf/nettyutil/handler/ssh/client/NetconfClientSessionImpl.java

   1 /*
   2  * Copyright (c) 2019 PANTHEON.tech, s.r.o. 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.nettyutil.handler.ssh.client;
   9
  10 import com.google.common.annotations.Beta;
  11 import io.netty.channel.ChannelHandlerContext;
  12 import io.netty.channel.ChannelPipeline;
  13 import java.io.IOException;
  14 import org.opendaylight.netconf.shaded.sshd.client.ClientFactoryManager;
  15 import org.opendaylight.netconf.shaded.sshd.client.channel.ChannelSubsystem;
  16 import org.opendaylight.netconf.shaded.sshd.client.session.ClientSessionImpl;
  17 import org.opendaylight.netconf.shaded.sshd.common.io.IoSession;
  18
  19 /**
  20  * A {@link ClientSessionImpl} which additionally allows creation of NETCONF subsystem channel, which is routed to
  21  * a particular {@link ChannelHandlerContext}.
  22  */
  23 @Beta
  24 public final class NetconfClientSessionImpl extends ClientSessionImpl implements NettyAwareClientSession {
  25     public NetconfClientSessionImpl(final ClientFactoryManager client, final IoSession ioSession) throws Exception {
  26         super(client, ioSession);
  27     }
  28
  29     @Override
  30     public NettyAwareChannelSubsystem createSubsystemChannel(final String subsystem, final ChannelHandlerContext ctx)
  31             throws IOException {
  32         return registerSubsystem(new NettyAwareChannelSubsystem(subsystem, ctx));
  33     }
  34
  35     @Override
  36     public NettyPipelineAwareChannelSubsystem createSubsystemChannel(final String subsystem,
  37             final ChannelPipeline pipeline) throws IOException {
  38         return registerSubsystem(new NettyPipelineAwareChannelSubsystem(subsystem, pipeline));
  39     }
  40
  41     private <T extends ChannelSubsystem> T registerSubsystem(final T subsystem) throws IOException {
  42         final var service = getConnectionService();
  43         final var id = service.registerChannel(subsystem);
  44         if (log.isDebugEnabled()) {
  45             log.debug("createSubsystemChannel({})[{}] created id={}", this, subsystem.getSubsystem(), id);
  46         }
  47         return subsystem;
  48     }
  49 }