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