Hyunsun Moon | 90163ba | 2016-10-12 13:35:14 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | package org.onosproject.ofagent.impl; |
| 17 | |
| 18 | import io.netty.buffer.ByteBuf; |
| 19 | import io.netty.channel.ChannelHandlerContext; |
| 20 | import io.netty.handler.codec.ByteToMessageDecoder; |
Daniel Park | be6b673 | 2016-11-11 15:52:19 +0900 | [diff] [blame] | 21 | import org.projectfloodlight.openflow.protocol.OFFactories; |
| 22 | import org.projectfloodlight.openflow.protocol.OFMessage; |
| 23 | import org.projectfloodlight.openflow.protocol.OFMessageReader; |
Hyunsun Moon | 90163ba | 2016-10-12 13:35:14 -0700 | [diff] [blame] | 24 | import org.slf4j.Logger; |
| 25 | import org.slf4j.LoggerFactory; |
| 26 | |
| 27 | import java.util.List; |
| 28 | |
| 29 | /** |
| 30 | * Decodes inbound byte buffer from OpenFlow channel to OFMessage. |
| 31 | */ |
| 32 | public final class OFMessageDecoder extends ByteToMessageDecoder { |
| 33 | |
| 34 | private final Logger log = LoggerFactory.getLogger(getClass()); |
| 35 | |
| 36 | @Override |
| 37 | protected void decode(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) |
| 38 | throws Exception { |
Hyunsun Moon | 90163ba | 2016-10-12 13:35:14 -0700 | [diff] [blame] | 39 | |
Daniel Park | be6b673 | 2016-11-11 15:52:19 +0900 | [diff] [blame] | 40 | if (!ctx.channel().isActive()) { |
| 41 | return; |
| 42 | } |
| 43 | |
| 44 | try { |
| 45 | OFMessageReader<OFMessage> reader = OFFactories.getGenericReader(); |
| 46 | OFMessage message = reader.readFrom(in); |
| 47 | out.add(message); |
| 48 | } catch (Throwable cause) { |
| 49 | log.error("Exception occured while processing decoding because of {}", cause.getMessage()); |
| 50 | } |
| 51 | |
Hyunsun Moon | 90163ba | 2016-10-12 13:35:14 -0700 | [diff] [blame] | 52 | } |
| 53 | } |