openflowjava/openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/factories/OF10PacketInMessageFactory.java

   1 /*
   2  * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.openflowjava.protocol.impl.deserialization.factories;
   9
  10 import static org.opendaylight.yangtools.yang.common.netty.ByteBufUtils.readUint16;
  11 import static org.opendaylight.yangtools.yang.common.netty.ByteBufUtils.readUint32;
  12
  13 import io.netty.buffer.ByteBuf;
  14 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
  15 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PacketInReason;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessage;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessageBuilder;
  19
  20 /**
  21  * Translates PacketIn messages (OpenFlow v1.0).
  22  *
  23  * @author michal.polkorab
  24  */
  25 public class OF10PacketInMessageFactory implements OFDeserializer<PacketInMessage> {
  26
  27     private static final byte PADDING_IN_PACKET_IN_HEADER = 1;
  28
  29     @Override
  30     public PacketInMessage deserialize(final ByteBuf rawMessage) {
  31         PacketInMessageBuilder builder = new PacketInMessageBuilder()
  32                 .setVersion(EncodeConstants.OF_VERSION_1_0)
  33                 .setXid(readUint32(rawMessage))
  34                 .setBufferId(readUint32(rawMessage))
  35                 .setTotalLen(readUint16(rawMessage))
  36                 .setInPort(readUint16(rawMessage))
  37                 .setReason(PacketInReason.forValue(rawMessage.readUnsignedByte()));
  38         rawMessage.skipBytes(PADDING_IN_PACKET_IN_HEADER);
  39         int remainingBytes = rawMessage.readableBytes();
  40         if (remainingBytes > 0) {
  41             final byte[] buf = new byte[remainingBytes];
  42             rawMessage.readBytes(buf);
  43             builder.setData(buf);
  44         }
  45         return builder.build();
  46     }
  47 }