openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/action/OF13SetFieldActionDeserializer.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.action;
  10
  11 import io.netty.buffer.ByteBuf;
  12
  13 import java.util.ArrayList;
  14 import java.util.List;
  15
  16 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistry;
  17 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistryInjector;
  18 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
  19 import org.opendaylight.openflowjava.protocol.api.keys.MatchEntryDeserializerKey;
  20 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev150225.OxmFieldsAction;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev150225.OxmFieldsActionBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.SetField;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.grouping.Action;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.grouping.ActionBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.ActionBase;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntry;
  28
  29 /**
  30  * @author michal.polkorab
  31  *
  32  */
  33 public class OF13SetFieldActionDeserializer extends AbstractActionDeserializer
  34         implements DeserializerRegistryInjector {
  35
  36     private DeserializerRegistry registry;
  37
  38     @Override
  39     public Action deserialize(ByteBuf input) {
  40         ActionBuilder builder = new ActionBuilder();
  41         builder.setType(getType());
  42         int startIndex = input.readerIndex();
  43         input.skipBytes(2 * EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
  44         OxmFieldsActionBuilder matchEntries = new OxmFieldsActionBuilder();
  45         int oxmClass = input.getUnsignedShort(input.readerIndex());
  46         // get oxm_field & hasMask byte and extract the field value
  47         int oxmField = input.getUnsignedByte(input.readerIndex()
  48                 + EncodeConstants.SIZE_OF_SHORT_IN_BYTES) >>> 1;
  49         MatchEntryDeserializerKey key = new MatchEntryDeserializerKey(EncodeConstants.OF13_VERSION_ID,
  50                 oxmClass, oxmField);
  51         if (oxmClass == EncodeConstants.EXPERIMENTER_VALUE) {
  52             long expId = input.getUnsignedInt(input.readerIndex() + EncodeConstants.SIZE_OF_SHORT_IN_BYTES
  53                     + 2 * EncodeConstants.SIZE_OF_BYTE_IN_BYTES);
  54             key.setExperimenterId(expId);
  55         }
  56         OFDeserializer<MatchEntry> matchDeserializer = registry.getDeserializer(key);
  57         List<MatchEntry> entry = new ArrayList<>();
  58         entry.add(matchDeserializer.deserialize(input));
  59         matchEntries.setMatchEntry(entry);
  60         builder.addAugmentation(OxmFieldsAction.class, matchEntries.build());
  61         int paddingRemainder = (input.readerIndex() - startIndex) % EncodeConstants.PADDING;
  62         if (paddingRemainder != 0) {
  63             input.skipBytes(EncodeConstants.PADDING - paddingRemainder);
  64         }
  65         return builder.build();
  66     }
  67
  68     @Override
  69     protected Class<? extends ActionBase> getType() {
  70         return SetField.class;
  71     }
  72
  73     @Override
  74     public void injectDeserializerRegistry(DeserializerRegistry deserializerRegistry) {
  75         this.registry = deserializerRegistry;
  76     }
  77
  78 }