| /** |
| * Copyright 2011, Big Switch Networks, Inc. |
| * Originally created by David Erickson, Stanford University |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| * not use this file except in compliance with the License. You may obtain |
| * a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| **/ |
| |
| package net.floodlightcontroller.core.internal; |
| |
| import java.util.List; |
| |
| import org.jboss.netty.buffer.ChannelBuffer; |
| import org.jboss.netty.buffer.ChannelBuffers; |
| import org.jboss.netty.channel.Channel; |
| import org.jboss.netty.channel.ChannelHandlerContext; |
| import org.jboss.netty.handler.codec.oneone.OneToOneEncoder; |
| import org.openflow.protocol.OFMessage; |
| |
| /** |
| * Encode an openflow message for output into a ChannelBuffer, for use in a |
| * netty pipeline |
| * @author readams |
| */ |
| public class OFMessageEncoder extends OneToOneEncoder { |
| |
| @Override |
| protected Object encode(ChannelHandlerContext ctx, Channel channel, |
| Object msg) throws Exception { |
| if (!( msg instanceof List)) |
| return msg; |
| |
| @SuppressWarnings("unchecked") |
| List<OFMessage> msglist = (List<OFMessage>)msg; |
| int size = 0; |
| for (OFMessage ofm : msglist) { |
| size += ofm.getLengthU(); |
| } |
| |
| ChannelBuffer buf = ChannelBuffers.buffer(size);; |
| for (OFMessage ofm : msglist) { |
| ofm.writeTo(buf); |
| } |
| return buf; |
| } |
| |
| } |