openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/protocol/deserialization/multipart/MultipartReplyGroupDescDeserializer.java

   1 /*
   2  * Copyright (c) 2017 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.deserialization.multipart;
  10
  11 import io.netty.buffer.ByteBuf;
  12 import java.util.ArrayList;
  13 import java.util.List;
  14 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistry;
  15 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistryInjector;
  16 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
  17 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  18 import org.opendaylight.openflowplugin.extension.api.path.ActionPath;
  19 import org.opendaylight.openflowplugin.impl.protocol.deserialization.util.ActionUtil;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionKey;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.multipart.reply.multipart.reply.body.MultipartReplyGroupDescBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupTypes;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.BucketsBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.Bucket;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.BucketBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.desc.stats.reply.GroupDescStats;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.desc.stats.reply.GroupDescStatsBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.multipart.types.rev170112.multipart.reply.MultipartReplyBody;
  31
  32 public class MultipartReplyGroupDescDeserializer implements OFDeserializer<MultipartReplyBody>, DeserializerRegistryInjector {
  33
  34     private static final byte PADDING_IN_GROUP_DESC_HEADER = 1;
  35     private static final byte PADDING_IN_BUCKETS_HEADER = 4;
  36     private static final byte GROUP_DESC_HEADER_LENGTH = 8;
  37     private static final byte BUCKETS_HEADER_LENGTH = 16;
  38     private DeserializerRegistry registry;
  39
  40     @Override
  41     public MultipartReplyBody deserialize(ByteBuf message) {
  42         final MultipartReplyGroupDescBuilder builder = new MultipartReplyGroupDescBuilder();
  43         final List<GroupDescStats> items = new ArrayList<>();
  44
  45         while (message.readableBytes() > 0) {
  46             final int itemLength = message.readUnsignedShort();
  47
  48             final GroupDescStatsBuilder itemBuilder = new GroupDescStatsBuilder()
  49                 .setGroupType(GroupTypes.forValue(message.readUnsignedByte()));
  50
  51             message.skipBytes(PADDING_IN_GROUP_DESC_HEADER);
  52             itemBuilder.setGroupId(new GroupId(message.readUnsignedInt()));
  53
  54             final List<Bucket> subItems = new ArrayList<>();
  55             int actualLength = GROUP_DESC_HEADER_LENGTH;
  56
  57             while (actualLength < itemLength) {
  58                 final int bucketsLength = message.readUnsignedShort();
  59
  60                 final BucketBuilder bucketBuilder = new BucketBuilder()
  61                     .setWeight(message.readUnsignedShort())
  62                     .setWatchPort(message.readUnsignedInt())
  63                     .setWatchGroup(message.readUnsignedInt());
  64
  65                 message.skipBytes(PADDING_IN_BUCKETS_HEADER);
  66
  67                 if (message.readableBytes() > 0) {
  68                     final List<org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list
  69                         .Action> actions = new ArrayList<>();
  70                     final int startIndex = message.readerIndex();
  71                     final int bucketLength = bucketsLength - BUCKETS_HEADER_LENGTH;
  72                     int offset = 0;
  73
  74                     while ((message.readerIndex() - startIndex) < bucketLength) {
  75                         actions.add(new ActionBuilder()
  76                                 .setKey(new ActionKey(offset))
  77                                 .setOrder(offset)
  78                                 .setAction(ActionUtil.readAction(EncodeConstants.OF13_VERSION_ID, message, registry,
  79                                         ActionPath.GROUPDESCSTATSUPDATED_GROUPDESCSTATS_BUCKETS_BUCKET_ACTION))
  80                                 .build());
  81
  82                         offset++;
  83                     }
  84
  85                     bucketBuilder.setAction(actions);
  86                 }
  87
  88                 subItems.add(bucketBuilder.build());
  89                 actualLength += bucketsLength;
  90             }
  91
  92             items.add(itemBuilder
  93                     .setBuckets(new BucketsBuilder()
  94                         .setBucket(subItems)
  95                         .build())
  96                     .build());
  97         }
  98
  99         return builder
 100             .setGroupDescStats(items)
 101             .build();
 102     }
 103
 104     @Override
 105     public void injectDeserializerRegistry(DeserializerRegistry deserializerRegistry) {
 106         registry = deserializerRegistry;
 107     }
 108
 109 }