openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/action/OF13SetFieldActionDeserializer.java

   1 /*\r
   2  * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved.\r
   3  *\r
   4  * This program and the accompanying materials are made available under the\r
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,\r
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html\r
   7  */\r
   8 \r
   9 package org.opendaylight.openflowjava.protocol.impl.deserialization.action;\r
  10 \r
  11 import io.netty.buffer.ByteBuf;\r
  12 \r
  13 import java.util.ArrayList;\r
  14 import java.util.List;\r
  15 \r
  16 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistry;\r
  17 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistryInjector;\r
  18 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;\r
  19 import org.opendaylight.openflowjava.protocol.api.extensibility.keys.MatchEntryDeserializerKey;\r
  20 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;\r
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.OxmFieldsAction;\r
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.OxmFieldsActionBuilder;\r
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.SetField;\r
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.grouping.Action;\r
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.grouping.ActionBuilder;\r
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.ActionBase;\r
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.oxm.fields.grouping.MatchEntries;\r
  28 \r
  29 /**\r
  30  * @author michal.polkorab\r
  31  *\r
  32  */\r
  33 public class OF13SetFieldActionDeserializer extends AbstractActionDeserializer\r
  34         implements DeserializerRegistryInjector {\r
  35 \r
  36     private DeserializerRegistry registry;\r
  37 \r
  38     @Override\r
  39     public Action deserialize(ByteBuf input) {\r
  40         ActionBuilder builder = new ActionBuilder();\r
  41         builder.setType(getType());\r
  42         int startIndex = input.readerIndex();\r
  43         input.skipBytes(2 * EncodeConstants.SIZE_OF_SHORT_IN_BYTES);\r
  44         OxmFieldsActionBuilder matchEntries = new OxmFieldsActionBuilder();\r
  45         int oxmClass = input.getUnsignedShort(input.readerIndex());\r
  46         // get oxm_field & hasMask byte and extract the field value\r
  47         int oxmField = input.getUnsignedByte(input.readerIndex()\r
  48                 + EncodeConstants.SIZE_OF_SHORT_IN_BYTES) >>> 1;\r
  49         MatchEntryDeserializerKey key = new MatchEntryDeserializerKey(EncodeConstants.OF13_VERSION_ID,\r
  50                 oxmClass, oxmField);\r
  51         if (oxmClass == EncodeConstants.EXPERIMENTER_VALUE) {\r
  52             long expId = input.getUnsignedInt(input.readerIndex() + EncodeConstants.SIZE_OF_SHORT_IN_BYTES\r
  53                     + 2 * EncodeConstants.SIZE_OF_BYTE_IN_BYTES);\r
  54             key.setExperimenterId(expId);\r
  55         }\r
  56         OFDeserializer<MatchEntries> matchDeserializer = registry.getDeserializer(key);\r
  57         List<MatchEntries> entry = new ArrayList<>();\r
  58         entry.add(matchDeserializer.deserialize(input));\r
  59         matchEntries.setMatchEntries(entry);\r
  60         builder.addAugmentation(OxmFieldsAction.class, matchEntries.build());\r
  61         int paddingRemainder = (input.readerIndex() - startIndex) % EncodeConstants.PADDING;\r
  62         if (paddingRemainder != 0) {\r
  63             input.skipBytes(EncodeConstants.PADDING - paddingRemainder);\r
  64         }\r
  65         return builder.build();\r
  66     }\r
  67 \r
  68     @Override\r
  69     protected Class<? extends ActionBase> getType() {\r
  70         return SetField.class;\r
  71     }\r
  72 \r
  73     @Override\r
  74     public void injectDeserializerRegistry(DeserializerRegistry deserializerRegistry) {\r
  75         this.registry = deserializerRegistry;\r
  76     }\r
  77 \r
  78 }\r