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 package org.opendaylight.openflowplugin.impl.protocol.deserialization.multipart;
   9
  10 import static org.opendaylight.yangtools.yang.common.netty.ByteBufUtils.readUint16;
  11 import static org.opendaylight.yangtools.yang.common.netty.ByteBufUtils.readUint32;
  12
  13 import io.netty.buffer.ByteBuf;
  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.Action;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.ActionKey;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.statistics.rev131111.multipart.reply.multipart.reply.body.MultipartReplyGroupDescBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.BucketId;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupId;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupTypes;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.BucketsBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.Bucket;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.BucketBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.buckets.BucketKey;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.desc.stats.reply.GroupDescStats;
  32 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.desc.stats.reply.GroupDescStatsBuilder;
  33 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.group.desc.stats.reply.GroupDescStatsKey;
  34 import org.opendaylight.yang.gen.v1.urn.opendaylight.multipart.types.rev170112.multipart.reply.MultipartReplyBody;
  35 import org.opendaylight.yangtools.yang.binding.util.BindingMap;
  36 import org.opendaylight.yangtools.yang.common.Uint32;
  37
  38 public class MultipartReplyGroupDescDeserializer implements OFDeserializer<MultipartReplyBody>,
  39         DeserializerRegistryInjector {
  40
  41     private static final byte PADDING_IN_GROUP_DESC_HEADER = 1;
  42     private static final byte PADDING_IN_BUCKETS_HEADER = 4;
  43     private static final byte GROUP_DESC_HEADER_LENGTH = 8;
  44     private static final byte BUCKETS_HEADER_LENGTH = 16;
  45     private DeserializerRegistry registry;
  46
  47     @Override
  48     public MultipartReplyBody deserialize(final ByteBuf message) {
  49         final MultipartReplyGroupDescBuilder builder = new MultipartReplyGroupDescBuilder();
  50         final var items =  BindingMap.<GroupDescStatsKey, GroupDescStats>orderedBuilder();
  51
  52         while (message.readableBytes() > 0) {
  53             final int itemLength = message.readUnsignedShort();
  54
  55             final GroupDescStatsBuilder itemBuilder = new GroupDescStatsBuilder()
  56                     .setGroupType(GroupTypes.forValue(message.readUnsignedByte()));
  57
  58             message.skipBytes(PADDING_IN_GROUP_DESC_HEADER);
  59             itemBuilder.setGroupId(new GroupId(readUint32(message)));
  60
  61             final var subItems = BindingMap.<BucketKey, Bucket>orderedBuilder();
  62             int actualLength = GROUP_DESC_HEADER_LENGTH;
  63
  64             long bucketKey = 0;
  65             while (actualLength < itemLength) {
  66                 final int bucketsLength = message.readUnsignedShort();
  67
  68                 final BucketBuilder bucketBuilder = new BucketBuilder()
  69                         .setBucketId(new BucketId(Uint32.valueOf(bucketKey)))
  70                         .setWeight(readUint16(message))
  71                         .setWatchPort(readUint32(message))
  72                         .setWatchGroup(readUint32(message));
  73
  74                 message.skipBytes(PADDING_IN_BUCKETS_HEADER);
  75                 final var actions = BindingMap.<ActionKey, Action>orderedBuilder();
  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.OF_VERSION_1_3, message, registry,
  85                                     ActionPath.GROUP_DESC_STATS_UPDATED_BUCKET_ACTION))
  86                             .build());
  87
  88                     offset++;
  89                 }
  90
  91                 subItems.add(bucketBuilder.setAction(actions.build()).build());
  92                 bucketKey++;
  93                 actualLength += bucketsLength;
  94             }
  95
  96             items.add(itemBuilder.setBuckets(new BucketsBuilder().setBucket(subItems.build()).build()).build());
  97         }
  98
  99         return builder.setGroupDescStats(items.build()).build();
 100     }
 101
 102     @Override
 103     public void injectDeserializerRegistry(final DeserializerRegistry deserializerRegistry) {
 104         registry = deserializerRegistry;
 105     }
 106
 107 }