2 * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved.
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
9 package org.opendaylight.openflowjava.protocol.impl.core;
11 import io.netty.channel.Channel;
12 import io.netty.channel.group.DefaultChannelGroup;
13 import io.netty.channel.socket.SocketChannel;
14 import io.netty.handler.ssl.SslHandler;
15 import io.netty.util.concurrent.Future;
16 import io.netty.util.concurrent.GenericFutureListener;
17 import java.net.InetAddress;
18 import java.util.Iterator;
19 import java.util.List;
20 import java.util.concurrent.TimeUnit;
21 import javax.net.ssl.SSLEngine;
22 import org.opendaylight.openflowjava.protocol.impl.core.connection.ConnectionAdapterFactory;
23 import org.opendaylight.openflowjava.protocol.impl.core.connection.ConnectionAdapterFactoryImpl;
24 import org.opendaylight.openflowjava.protocol.impl.core.connection.ConnectionFacade;
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
29 * Initializes TCP / TLS channel
30 * @author michal.polkorab
32 public class TcpChannelInitializer extends ProtocolChannelInitializer<SocketChannel> {
34 private static final Logger LOGGER = LoggerFactory
35 .getLogger(TcpChannelInitializer.class);
36 private final DefaultChannelGroup allChannels;
37 private final ConnectionAdapterFactory connectionAdapterFactory;
42 public TcpChannelInitializer() {
43 this( new DefaultChannelGroup("netty-receiver", null), new ConnectionAdapterFactoryImpl() );
50 protected TcpChannelInitializer( final DefaultChannelGroup channelGroup, final ConnectionAdapterFactory connAdaptorFactory ) {
51 allChannels = channelGroup ;
52 connectionAdapterFactory = connAdaptorFactory ;
56 protected void initChannel(final SocketChannel ch) {
57 if (ch.remoteAddress() != null) {
58 final InetAddress switchAddress = ch.remoteAddress().getAddress();
59 final int port = ch.localAddress().getPort();
60 final int remotePort = ch.remoteAddress().getPort();
61 LOGGER.debug("Incoming connection from (remote address): {}:{} --> :{}",
62 switchAddress.toString(), remotePort, port);
64 if (!getSwitchConnectionHandler().accept(switchAddress)) {
66 LOGGER.debug("Incoming connection rejected");
70 LOGGER.debug("Incoming connection accepted - building pipeline");
72 ConnectionFacade connectionFacade = null;
73 connectionFacade = connectionAdapterFactory.createConnectionFacade(ch, null, useBarrier());
75 LOGGER.debug("calling plugin: {}", getSwitchConnectionHandler());
76 getSwitchConnectionHandler().onSwitchConnected(connectionFacade);
77 connectionFacade.checkListeners();
78 ch.pipeline().addLast(PipelineHandlers.IDLE_HANDLER.name(), new IdleHandler(getSwitchIdleTimeout(), TimeUnit.MILLISECONDS));
79 boolean tlsPresent = false;
81 // If this channel is configured to support SSL it will only support SSL
82 if (getTlsConfiguration() != null) {
84 final SslContextFactory sslFactory = new SslContextFactory(getTlsConfiguration());
85 final SSLEngine engine = sslFactory.getServerContext().createSSLEngine();
86 engine.setNeedClientAuth(true);
87 engine.setUseClientMode(false);
88 List<String> suitesList = getTlsConfiguration().getCipherSuites();
89 if (suitesList != null && !suitesList.isEmpty()) {
90 LOGGER.debug("Requested Cipher Suites are: {}", suitesList);
91 String[] suites = suitesList.toArray(new String[suitesList.size()]);
92 engine.setEnabledCipherSuites(suites);
93 LOGGER.debug("Cipher suites enabled in SSLEngine are: {}", engine.getEnabledCipherSuites().toString());
95 final SslHandler ssl = new SslHandler(engine);
96 final Future<Channel> handshakeFuture = ssl.handshakeFuture();
97 final ConnectionFacade finalConnectionFacade = connectionFacade;
98 handshakeFuture.addListener(new GenericFutureListener<Future<? super Channel>>() {
100 public void operationComplete(final Future<? super Channel> future) throws Exception {
101 finalConnectionFacade.fireConnectionReadyNotification();
104 ch.pipeline().addLast(PipelineHandlers.SSL_HANDLER.name(), ssl);
106 ch.pipeline().addLast(PipelineHandlers.OF_FRAME_DECODER.name(),
107 new OFFrameDecoder(connectionFacade, tlsPresent));
108 ch.pipeline().addLast(PipelineHandlers.OF_VERSION_DETECTOR.name(), new OFVersionDetector());
109 final OFDecoder ofDecoder = new OFDecoder();
110 ofDecoder.setDeserializationFactory(getDeserializationFactory());
111 ch.pipeline().addLast(PipelineHandlers.OF_DECODER.name(), ofDecoder);
112 final OFEncoder ofEncoder = new OFEncoder();
113 ofEncoder.setSerializationFactory(getSerializationFactory());
114 ch.pipeline().addLast(PipelineHandlers.OF_ENCODER.name(), ofEncoder);
115 ch.pipeline().addLast(PipelineHandlers.DELEGATING_INBOUND_HANDLER.name(), new DelegatingInboundHandler(connectionFacade));
117 connectionFacade.fireConnectionReadyNotification();
119 } catch (final Exception e) {
120 LOGGER.warn("Failed to initialize channel", e);
126 * @return iterator through active connections
128 public Iterator<Channel> getConnectionIterator() {
129 return allChannels.iterator();
133 * @return amount of active channels
136 return allChannels.size();