| /* |
| * Copyright 2017-present Open Networking Foundation |
| * |
| * 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 org.onosproject.ofagent.impl; |
| |
| import io.netty.buffer.ByteBuf; |
| import io.netty.channel.ChannelHandlerContext; |
| import io.netty.handler.codec.ByteToMessageDecoder; |
| import org.projectfloodlight.openflow.protocol.OFFactories; |
| import org.projectfloodlight.openflow.protocol.OFMessage; |
| import org.projectfloodlight.openflow.protocol.OFMessageReader; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.List; |
| |
| /** |
| * Decodes inbound byte buffer from OpenFlow channel to OFMessage. |
| */ |
| public final class OFMessageDecoder extends ByteToMessageDecoder { |
| |
| private final Logger log = LoggerFactory.getLogger(getClass()); |
| private final OFMessageReader<OFMessage> reader = OFFactories.getGenericReader(); |
| |
| @Override |
| protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) |
| throws Exception { |
| if (!ctx.channel().isActive()) { |
| return; |
| } |
| |
| try { |
| OFMessage message = reader.readFrom(in); |
| out.add(message); |
| } catch (Throwable cause) { |
| log.error("Failed decode OF message for {}", cause.getMessage()); |
| } |
| } |
| } |