openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/serialization/action/OF13SetFieldActionSerializer.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.serialization.action;
  10
  11 import io.netty.buffer.ByteBuf;
  12
  13 import org.opendaylight.openflowjava.protocol.api.extensibility.HeaderSerializer;
  14 import org.opendaylight.openflowjava.protocol.api.extensibility.OFSerializer;
  15 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistry;
  16 import org.opendaylight.openflowjava.protocol.api.extensibility.SerializerRegistryInjector;
  17 import org.opendaylight.openflowjava.protocol.api.keys.MatchEntrySerializerKey;
  18 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.ExperimenterIdMatchEntry;
  20 import org.opendaylight.openflowjava.protocol.impl.util.ActionConstants;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.OxmFieldsAction;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.grouping.Action;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.ExperimenterClass;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntries;
  25
  26 /**
  27  * @author michal.polkorab
  28  *
  29  */
  30 public class OF13SetFieldActionSerializer implements OFSerializer<Action>,
  31         HeaderSerializer<Action>, SerializerRegistryInjector {
  32
  33     private SerializerRegistry registry;
  34
  35     @Override
  36     public void serialize(Action action, ByteBuf outBuffer) {
  37         int startIndex = outBuffer.writerIndex();
  38         outBuffer.writeShort(ActionConstants.SET_FIELD_CODE);
  39         int lengthIndex = outBuffer.writerIndex();
  40         outBuffer.writeShort(EncodeConstants.EMPTY_LENGTH);
  41         OxmFieldsAction oxmField = action.getAugmentation(OxmFieldsAction.class);
  42         MatchEntries entry = oxmField.getMatchEntries().get(0);
  43         MatchEntrySerializerKey<?, ?> key = new MatchEntrySerializerKey<>(
  44                 EncodeConstants.OF13_VERSION_ID, entry.getOxmClass(), entry.getOxmMatchField());
  45         if (entry.getOxmClass().equals(ExperimenterClass.class)) {
  46             key.setExperimenterId(entry.getAugmentation(ExperimenterIdMatchEntry.class)
  47                     .getExperimenter().getValue());
  48         } else {
  49             key.setExperimenterId(null);
  50         }
  51         OFSerializer<MatchEntries> serializer = registry.getSerializer(key);
  52         serializer.serialize(entry, outBuffer);
  53         int paddingRemainder = (outBuffer.writerIndex() - startIndex) % EncodeConstants.PADDING;
  54         if (paddingRemainder != 0) {
  55             outBuffer.writeZero(EncodeConstants.PADDING - paddingRemainder);
  56         }
  57         outBuffer.setShort(lengthIndex, outBuffer.writerIndex() - startIndex);
  58     }
  59
  60     @Override
  61     public void serializeHeader(Action input, ByteBuf outBuffer) {
  62         outBuffer.writeShort(ActionConstants.SET_FIELD_CODE);
  63         outBuffer.writeShort(ActionConstants.ACTION_IDS_LENGTH);
  64     }
  65
  66     @Override
  67     public void injectSerializerRegistry(SerializerRegistry serializerRegistry) {
  68         registry = serializerRegistry;
  69     }
  70
  71 }