openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/protocol/serialization/actions/SetFieldActionSerializer.java

   1 /*
   2  * Copyright (c) 2016 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.openflowplugin.impl.protocol.serialization.actions;
  10
  11 import io.netty.buffer.ByteBuf;
  12 import org.opendaylight.openflowjava.protocol.api.extensibility.HeaderSerializer;
  13 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistry;
  14 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistryInjector;
  15 import org.opendaylight.openflowjava.protocol.api.keys.MessageTypeKey;
  16 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  17 import org.opendaylight.openflowjava.protocol.impl.util.ActionConstants;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.Action;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.action.SetFieldCase;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.action.set.field._case.SetField;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.model.match.types.rev131026.Match;
  22
  23 public class SetFieldActionSerializer extends AbstractActionSerializer implements SerializerRegistryInjector {
  24     private SerializerRegistry registry;
  25
  26     @Override
  27     public void serialize(Action action, ByteBuf outBuffer) {
  28         // Serialize field type and save position
  29         final int startIndex = outBuffer.writerIndex();
  30         outBuffer.writeShort(getType());
  31         final int lengthIndex = outBuffer.writerIndex();
  32         outBuffer.writeShort(EncodeConstants.EMPTY_LENGTH);
  33
  34         // Serialize match (using small workaround with serializeHeader method to serialize only match entries)
  35         final SetField setField = SetFieldCase.class.cast(action).getSetField();
  36         final HeaderSerializer<Match> serializer = registry
  37                 .getSerializer(new MessageTypeKey<>(EncodeConstants.OF13_VERSION_ID, Match.class));
  38         serializer.serializeHeader(setField, outBuffer);
  39
  40         // Serialize padding based on match length
  41         int paddingRemainder = (outBuffer.writerIndex() - startIndex) % EncodeConstants.PADDING;
  42         if (paddingRemainder != 0) {
  43             outBuffer.writeZero(EncodeConstants.PADDING - paddingRemainder);
  44         }
  45         outBuffer.setShort(lengthIndex, outBuffer.writerIndex() - startIndex);
  46     }
  47
  48     @Override
  49     protected int getLength() {
  50         return ActionConstants.GENERAL_ACTION_LENGTH;
  51     }
  52
  53     @Override
  54     protected int getType() {
  55         return ActionConstants.SET_FIELD_CODE;
  56     }
  57
  58     @Override
  59     public void injectSerializerRegistry(SerializerRegistry serializerRegistry) {
  60         registry = serializerRegistry;
  61     }
  62 }