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.BucketId;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupTypes;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.BucketsBuilder;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.Bucket;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.BucketBuilder;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.BucketKey;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.desc.stats.reply.GroupDescStats;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.desc.stats.reply.GroupDescStatsBuilder;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.desc.stats.reply.GroupDescStatsKey;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.multipart.types.rev170112.multipart.reply.MultipartReplyBody;
  34
  35 public class MultipartReplyGroupDescDeserializer implements OFDeserializer<MultipartReplyBody>,
  36         DeserializerRegistryInjector {
  37
  38     private static final byte PADDING_IN_GROUP_DESC_HEADER = 1;
  39     private static final byte PADDING_IN_BUCKETS_HEADER = 4;
  40     private static final byte GROUP_DESC_HEADER_LENGTH = 8;
  41     private static final byte BUCKETS_HEADER_LENGTH = 16;
  42     private DeserializerRegistry registry;
  43
  44     @Override
  45     public MultipartReplyBody deserialize(ByteBuf message) {
  46         final MultipartReplyGroupDescBuilder builder = new MultipartReplyGroupDescBuilder();
  47         final List<GroupDescStats> items = new ArrayList<>();
  48
  49         while (message.readableBytes() > 0) {
  50             final int itemLength = message.readUnsignedShort();
  51
  52             final GroupDescStatsBuilder itemBuilder = new GroupDescStatsBuilder()
  53                     .setGroupType(GroupTypes.forValue(message.readUnsignedByte()));
  54
  55             message.skipBytes(PADDING_IN_GROUP_DESC_HEADER);
  56             itemBuilder.setGroupId(new GroupId(message.readUnsignedInt()));
  57             itemBuilder.withKey(new GroupDescStatsKey(itemBuilder.getGroupId()));
  58
  59             final List<Bucket> subItems = new ArrayList<>();
  60             int actualLength = GROUP_DESC_HEADER_LENGTH;
  61
  62             long bucketKey = 0;
  63             while (actualLength < itemLength) {
  64                 final int bucketsLength = message.readUnsignedShort();
  65
  66                 final BucketBuilder bucketBuilder = new BucketBuilder()
  67                         .setBucketId(new BucketId(bucketKey))
  68                         .withKey(new BucketKey(new BucketId(bucketKey)))
  69                         .setWeight(message.readUnsignedShort())
  70                         .setWatchPort(message.readUnsignedInt())
  71                         .setWatchGroup(message.readUnsignedInt());
  72
  73                 message.skipBytes(PADDING_IN_BUCKETS_HEADER);
  74                 final List<org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list
  75                         .Action> actions = new ArrayList<>();
  76                 final int startIndex = message.readerIndex();
  77                 final int bucketLength = bucketsLength - BUCKETS_HEADER_LENGTH;
  78                 int offset = 0;
  79
  80                 while (message.readerIndex() - startIndex < bucketLength) {
  81                     actions.add(new ActionBuilder()
  82                             .withKey(new ActionKey(offset))
  83                             .setOrder(offset)
  84                             .setAction(ActionUtil.readAction(EncodeConstants.OF13_VERSION_ID, message, registry,
  85                                     ActionPath.GROUP_DESC_STATS_UPDATED_BUCKET_ACTION))
  86                             .build());
  87
  88                     offset++;
  89                 }
  90
  91                 bucketBuilder.setAction(actions);
  92                 subItems.add(bucketBuilder.build());
  93                 bucketKey++;
  94                 actualLength += bucketsLength;
  95             }
  96
  97             items.add(itemBuilder
  98                     .setBuckets(new BucketsBuilder()
  99                             .setBucket(subItems)
 100                             .build())
 101                     .build());
 102         }
 103
 104         return builder
 105                 .setGroupDescStats(items)
 106                 .build();
 107     }
 108
 109     @Override
 110     public void injectDeserializerRegistry(DeserializerRegistry deserializerRegistry) {
 111         registry = deserializerRegistry;
 112     }
 113
 114 }