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
   9 package org.opendaylight.openflowjava.protocol.impl.deserialization.factories;
  10
  11 import io.netty.buffer.ByteBuf;
  12 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
  13 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  14 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PacketInReason;
  15 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessage;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessageBuilder;
  17
  18 /**
  19  * Translates PacketIn messages (OpenFlow v1.0)
  20  * @author michal.polkorab
  21  */
  22 public class OF10PacketInMessageFactory implements OFDeserializer<PacketInMessage> {
  23
  24     private static final byte PADDING_IN_PACKET_IN_HEADER = 1;
  25
  26     @Override
  27     public PacketInMessage deserialize(final ByteBuf rawMessage) {
  28         PacketInMessageBuilder builder = new PacketInMessageBuilder();
  29         builder.setVersion((short) EncodeConstants.OF10_VERSION_ID);
  30         builder.setXid(rawMessage.readUnsignedInt());
  31         builder.setBufferId(rawMessage.readUnsignedInt());
  32         builder.setTotalLen(rawMessage.readUnsignedShort());
  33         builder.setInPort(rawMessage.readUnsignedShort());
  34         builder.setReason(PacketInReason.forValue(rawMessage.readUnsignedByte()));
  35         rawMessage.skipBytes(PADDING_IN_PACKET_IN_HEADER);
  36         int remainingBytes = rawMessage.readableBytes();
  37         if (remainingBytes > 0) {
  38             final byte[] buf = new byte[remainingBytes];
  39             rawMessage.readBytes(buf);
  40             builder.setData(buf);
  41         }
  42         return builder.build();
  43     }
  44 }