Java tutorial
/* * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved. * * This program and the accompanying materials are made available under the * terms of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html */ package org.opendaylight.openflowjava.protocol.impl.core; import java.util.concurrent.TimeUnit; import io.netty.channel.ChannelHandlerContext; import io.netty.handler.timeout.IdleState; import io.netty.handler.timeout.IdleStateEvent; import io.netty.handler.timeout.IdleStateHandler; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.system.rev130927.SwitchIdleEventBuilder; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Detects idle state of switch and informs upper layers * @author michal.polkorab */ public class IdleHandler extends IdleStateHandler { private static final Logger LOGGER = LoggerFactory.getLogger(IdleHandler.class); /** * @param readerIdleTime * @param writerIdleTime * @param allIdleTime * @param unit */ public IdleHandler(long readerIdleTime, long writerIdleTime, long allIdleTime, TimeUnit unit) { super(readerIdleTime, writerIdleTime, allIdleTime, unit); } @Override protected void channelIdle(ChannelHandlerContext ctx, IdleStateEvent evt) throws Exception { if ((evt.state() == IdleState.READER_IDLE) && (evt.isFirst())) { LOGGER.debug("Switch idle"); SwitchIdleEventBuilder builder = new SwitchIdleEventBuilder(); builder.setInfo("Switch idle"); ctx.fireChannelRead(builder.build()); } } }