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 io.netty.buffer.ByteBuf; import io.netty.channel.ChannelHandlerContext; import io.netty.handler.codec.MessageToByteEncoder; import org.opendaylight.openflowjava.protocol.impl.serialization.SerializationFactory; import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.OfHeader; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Transforms OpenFlow Protocol messages to POJOs * @author michal.polkorab * @author timotej.kubas */ public class OFEncoder extends MessageToByteEncoder<OfHeader> { private static final Logger LOGGER = LoggerFactory.getLogger(OFEncoder.class); /** Constructor of class */ public OFEncoder() { LOGGER.trace("Creating OF13Encoder"); } @Override protected void encode(ChannelHandlerContext ctx, OfHeader msg, ByteBuf out) throws Exception { LOGGER.trace("Encoding"); try { SerializationFactory.messageToBuffer(msg.getVersion(), out, msg); } catch (Exception e) { LOGGER.error("Message serialization failed"); LOGGER.error(e.getMessage(), e); out.clear(); return; } if (out.readableBytes() > 0) { out.retain(); ctx.writeAndFlush(out); } else { LOGGER.warn("Translated buffer is empty"); } } }