openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/core/TcpConnectionInitializer.java

   1 /*
   2  * Copyright (c) 2015 Pantheon Technologies 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
   9 package org.opendaylight.openflowjava.protocol.impl.core;
  10
  11 import io.netty.bootstrap.Bootstrap;
  12 import io.netty.channel.EventLoopGroup;
  13 import io.netty.channel.epoll.EpollSocketChannel;
  14 import io.netty.channel.socket.nio.NioSocketChannel;
  15 import org.opendaylight.openflowjava.protocol.api.connection.ThreadConfiguration;
  16 import org.slf4j.Logger;
  17 import org.slf4j.LoggerFactory;
  18
  19 import com.google.common.base.Preconditions;
  20 import com.google.common.util.concurrent.ListenableFuture;
  21 import com.google.common.util.concurrent.SettableFuture;
  22
  23 /**
  24  * Initializes (TCP) connection to device
  25  * @author martin.uhlir
  26  *
  27  */
  28 public class TcpConnectionInitializer implements ServerFacade,
  29         ConnectionInitializer {
  30
  31     private static final Logger LOG = LoggerFactory
  32             .getLogger(TcpConnectionInitializer.class);
  33     private EventLoopGroup workerGroup;
  34     private ThreadConfiguration threadConfig;
  35
  36     private TcpChannelInitializer channelInitializer;
  37     private Bootstrap b;
  38     private boolean isEpollEnabled;
  39
  40     /**
  41      * Constructor
  42      * @param workerGroup - shared worker group
  43      */
  44     public TcpConnectionInitializer(EventLoopGroup workerGroup, boolean isEpollEnabled) {
  45         Preconditions.checkNotNull(workerGroup, "WorkerGroup can't be null");
  46         this.workerGroup = workerGroup;
  47         this.isEpollEnabled = isEpollEnabled;
  48     }
  49
  50     @Override
  51     public void run() {
  52         b = new Bootstrap();
  53         if(isEpollEnabled) {
  54             b.group(workerGroup).channel(EpollSocketChannel.class)
  55                     .handler(channelInitializer);
  56         } else {
  57             b.group(workerGroup).channel(NioSocketChannel.class)
  58                     .handler(channelInitializer);
  59         }
  60     }
  61
  62     @Override
  63     public ListenableFuture<Boolean> shutdown() {
  64         final SettableFuture<Boolean> result = SettableFuture.create();
  65         workerGroup.shutdownGracefully();
  66         return result;
  67     }
  68
  69     @Override
  70     public ListenableFuture<Boolean> getIsOnlineFuture() {
  71         return null;
  72     }
  73
  74     @Override
  75     public void setThreadConfig(ThreadConfiguration threadConfig) {
  76         this.threadConfig = threadConfig;
  77     }
  78
  79     @Override
  80     public void initiateConnection(String host, int port) {
  81         try {
  82             b.connect(host, port).sync();
  83         } catch (InterruptedException e) {
  84             LOG.error("Unable to initiate connection", e);
  85         }
  86     }
  87
  88     /**
  89      * @param channelInitializer
  90      */
  91     public void setChannelInitializer(TcpChannelInitializer channelInitializer) {
  92         this.channelInitializer = channelInitializer;
  93     }
  94 }