opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/AbstractSslChannelInitializer.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.util;
  10
  11 import javax.net.ssl.SSLContext;
  12 import javax.net.ssl.SSLEngine;
  13
  14 import org.opendaylight.controller.netconf.api.NetconfMessage;
  15 import org.opendaylight.controller.netconf.api.NetconfSession;
  16 import org.opendaylight.controller.netconf.util.handler.FramingMechanismHandlerFactory;
  17 import org.opendaylight.controller.netconf.util.handler.NetconfMessageAggregator;
  18 import org.opendaylight.controller.netconf.util.messages.FramingMechanism;
  19 import org.opendaylight.controller.netconf.util.messages.NetconfMessageFactory;
  20 import org.opendaylight.protocol.framework.ProtocolHandlerFactory;
  21 import org.opendaylight.protocol.framework.ProtocolMessageDecoder;
  22 import org.opendaylight.protocol.framework.ProtocolMessageEncoder;
  23
  24 import com.google.common.base.Optional;
  25
  26 import io.netty.channel.ChannelHandler;
  27 import io.netty.channel.socket.SocketChannel;
  28 import io.netty.handler.ssl.SslHandler;
  29 import io.netty.util.concurrent.Promise;
  30
  31 public abstract class AbstractSslChannelInitializer extends AbstractChannelInitializer {
  32
  33     private final Optional<SSLContext> maybeContext;
  34     private final NetconfHandlerFactory handlerFactory;
  35
  36     public AbstractSslChannelInitializer(Optional<SSLContext> maybeContext) {
  37         this.maybeContext = maybeContext;
  38         this.handlerFactory = new NetconfHandlerFactory(new NetconfMessageFactory());
  39     }
  40
  41     @Override
  42     public void initialize(SocketChannel ch, Promise<? extends NetconfSession> promise) {
  43         if (maybeContext.isPresent()) {
  44             initSsl(ch);
  45         }
  46
  47         ch.pipeline().addLast("aggregator", new NetconfMessageAggregator(FramingMechanism.EOM));
  48         ch.pipeline().addLast(handlerFactory.getDecoders());
  49         initializeAfterDecoder(ch, promise);
  50         ch.pipeline().addLast("frameEncoder", FramingMechanismHandlerFactory.createHandler(FramingMechanism.EOM));
  51         ch.pipeline().addLast(handlerFactory.getEncoders());
  52     }
  53
  54     private void initSsl(SocketChannel ch) {
  55         SSLEngine sslEngine = maybeContext.get().createSSLEngine();
  56         initSslEngine(sslEngine);
  57         final SslHandler handler = new SslHandler(sslEngine);
  58         ch.pipeline().addLast("ssl", handler);
  59     }
  60
  61     protected abstract void initSslEngine(SSLEngine sslEngine);
  62
  63     private static final class NetconfHandlerFactory extends ProtocolHandlerFactory<NetconfMessage> {
  64
  65         public NetconfHandlerFactory(final NetconfMessageFactory msgFactory) {
  66             super(msgFactory);
  67         }
  68
  69         @Override
  70         public ChannelHandler[] getEncoders() {
  71             return new ChannelHandler[] { new ProtocolMessageEncoder(this.msgFactory) };
  72         }
  73
  74         @Override
  75         public ChannelHandler[] getDecoders() {
  76             return new ChannelHandler[] { new ProtocolMessageDecoder(this.msgFactory) };
  77         }
  78     }
  79 }