openflowjava/openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/serialization/factories/PacketInMessageFactory.java

   1 /*
   2  * Copyright (c) 2015 NetIDE Consortium 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.serialization.factories;
   9
  10 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  11 import io.netty.buffer.ByteBuf;
  12 import java.util.Objects;
  13 import org.opendaylight.openflowjava.protocol.api.extensibility.OFSerializer;
  14 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistry;
  15 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistryInjector;
  16 import org.opendaylight.openflowjava.protocol.api.keys.MessageTypeKey;
  17 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  18 import org.opendaylight.openflowjava.util.ByteBufUtils;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.grouping.Match;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessage;
  21
  22 /**
  23  * Translates PacketIn messages.
  24  */
  25 public class PacketInMessageFactory implements OFSerializer<PacketInMessage>, SerializerRegistryInjector {
  26     private static final byte PADDING = 2;
  27     private static final byte MESSAGE_TYPE = 10;
  28     private SerializerRegistry registry;
  29
  30     @Override
  31     @SuppressFBWarnings("UWF_FIELD_NOT_INITIALIZED_IN_CONSTRUCTOR") // FB doesn't recognize Objects.requireNonNull
  32     public void serialize(final PacketInMessage message, final ByteBuf outBuffer) {
  33         Objects.requireNonNull(registry);
  34
  35         ByteBufUtils.writeOFHeader(MESSAGE_TYPE, message, outBuffer, EncodeConstants.EMPTY_LENGTH);
  36         outBuffer.writeInt(message.getBufferId().intValue());
  37         outBuffer.writeShort(message.getTotalLen().intValue());
  38         outBuffer.writeByte(message.getReason().getIntValue());
  39         outBuffer.writeByte(message.getTableId().getValue().byteValue());
  40         outBuffer.writeLong(message.getCookie().longValue());
  41         OFSerializer<Match> matchSerializer = registry.getSerializer(
  42                 new MessageTypeKey<>(message.getVersion(), Match.class));
  43         matchSerializer.serialize(message.getMatch(), outBuffer);
  44         outBuffer.writeZero(PADDING);
  45
  46         byte[] data = message.getData();
  47
  48         if (data != null) {
  49             outBuffer.writeBytes(data);
  50         }
  51         ByteBufUtils.updateOFHeaderLength(outBuffer);
  52     }
  53
  54     @Override
  55     public void injectSerializerRegistry(final SerializerRegistry serializerRegistry) {
  56         this.registry = serializerRegistry;
  57     }
  58 }