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.common.action.rev150203.action.grouping.ActionChoice;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev150203.action.grouping.action.choice.SetFieldCaseBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev150203.action.grouping.action.choice.set.field._case.SetFieldActionBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev150203.actions.grouping.Action;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev150203.actions.grouping.ActionBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev150225.match.entries.grouping.MatchEntry;
  27
  28 /**
  29  * @author michal.polkorab
  30  *
  31  */
  32 public class OF13SetFieldActionDeserializer extends AbstractActionDeserializer
  33         implements DeserializerRegistryInjector {
  34
  35     private DeserializerRegistry registry;
  36
  37     @Override
  38     public Action deserialize(ByteBuf input) {
  39         org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev150203.actions.grouping.ActionBuilder builder = new ActionBuilder();
  40         int startIndex = input.readerIndex();
  41         input.skipBytes(2 * EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
  42         SetFieldCaseBuilder caseBuilder = new SetFieldCaseBuilder();
  43         SetFieldActionBuilder actionBuilder = new SetFieldActionBuilder();
  44         int oxmClass = input.getUnsignedShort(input.readerIndex());
  45         // get oxm_field & hasMask byte and extract the field value
  46         int oxmField = input.getUnsignedByte(input.readerIndex()
  47                 + EncodeConstants.SIZE_OF_SHORT_IN_BYTES) >>> 1;
  48         MatchEntryDeserializerKey key = new MatchEntryDeserializerKey(EncodeConstants.OF13_VERSION_ID,
  49                 oxmClass, oxmField);
  50         if (oxmClass == EncodeConstants.EXPERIMENTER_VALUE) {
  51             long expId = input.getUnsignedInt(input.readerIndex() + EncodeConstants.SIZE_OF_SHORT_IN_BYTES
  52                     + 2 * EncodeConstants.SIZE_OF_BYTE_IN_BYTES);
  53             key.setExperimenterId(expId);
  54         }
  55         OFDeserializer<MatchEntry> matchDeserializer = registry.getDeserializer(key);
  56         List<MatchEntry> entry = new ArrayList<>();
  57         entry.add(matchDeserializer.deserialize(input));
  58         actionBuilder.setMatchEntry(entry);
  59         caseBuilder.setSetFieldAction(actionBuilder.build());
  60         builder.setActionChoice(caseBuilder.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 ActionChoice getType() {
  70         return new SetFieldCaseBuilder().build();
  71     }
  72
  73     @Override
  74     public void injectDeserializerRegistry(DeserializerRegistry deserializerRegistry) {
  75         this.registry = deserializerRegistry;
  76     }
  77
  78 }