openflowplugin-impl/src/main/java/org/opendaylight/openflowplugin/impl/protocol/deserialization/messages/GroupMessageDeserializer.java

   1 /*
   2  * Copyright (c) 2016 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.messages;
  10
  11 import io.netty.buffer.ByteBuf;
  12 import java.util.ArrayList;
  13 import java.util.Comparator;
  14 import java.util.List;
  15 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistry;
  16 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistryInjector;
  17 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
  18 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  19 import org.opendaylight.openflowplugin.extension.api.path.ActionPath;
  20 import org.opendaylight.openflowplugin.impl.protocol.deserialization.util.ActionUtil;
  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.types.rev131018.GroupId;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupMessage;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.group.types.rev131018.GroupMessageBuilder;
  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.openflow.common.types.rev130731.GroupModCommand;
  31
  32 public class GroupMessageDeserializer implements OFDeserializer<GroupMessage>, DeserializerRegistryInjector {
  33
  34     private static final byte PADDING = 1;
  35     private static final byte PADDING_IN_BUCKETS_HEADER = 4;
  36     private static final byte BUCKETS_HEADER_LENGTH = 16;
  37
  38     private static final Comparator<Bucket> COMPARATOR = (bucket1, bucket2) -> {
  39         if (bucket1.getBucketId() == null || bucket2.getBucketId() == null) {
  40             return 0;
  41         }
  42         return bucket1.getBucketId().getValue().compareTo(bucket2.getBucketId().getValue());
  43     };
  44
  45     private DeserializerRegistry registry;
  46
  47     @Override
  48     public GroupMessage deserialize(ByteBuf message) {
  49         final GroupMessageBuilder builder = new GroupMessageBuilder()
  50             .setVersion((short) EncodeConstants.OF13_VERSION_ID)
  51             .setXid(message.readUnsignedInt())
  52             .setCommand(GroupModCommand.forValue(message.readUnsignedShort()));
  53
  54         builder.setGroupType(GroupTypes.forValue(message.readUnsignedByte()));
  55         message.skipBytes(PADDING);
  56         builder.setGroupId(new GroupId(message.readUnsignedInt()));
  57
  58         final List<Bucket> buckets = new ArrayList<>();
  59
  60         while (message.readableBytes() > 0) {
  61             final int length = message.readUnsignedShort();
  62
  63             final BucketBuilder bucket = new BucketBuilder()
  64                 .setWeight(message.readUnsignedShort())
  65                 .setWatchPort(message.readUnsignedInt())
  66                 .setWatchGroup(message.readUnsignedInt());
  67
  68             message.skipBytes(PADDING_IN_BUCKETS_HEADER);
  69
  70             if (message.readableBytes() > 0) {
  71                 final List<org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list
  72                     .Action> actions = new ArrayList<>();
  73                 final int startIndex = message.readerIndex();
  74                 final int bucketLength = length - BUCKETS_HEADER_LENGTH;
  75                 int offset = 0;
  76
  77                 while (message.readerIndex() - startIndex < bucketLength) {
  78                     actions.add(new ActionBuilder()
  79                         .withKey(new ActionKey(offset))
  80                         .setOrder(offset)
  81                         .setAction(ActionUtil.readAction(EncodeConstants.OF13_VERSION_ID, message, registry,
  82                                 ActionPath.GROUP_DESC_STATS_UPDATED_BUCKET_ACTION))
  83                         .build());
  84
  85                     offset++;
  86                 }
  87
  88                 bucket.setAction(actions);
  89             }
  90
  91             buckets.add(bucket.build());
  92         }
  93
  94         buckets.sort(COMPARATOR);
  95         return builder
  96             .setBuckets(new BucketsBuilder()
  97                 .setBucket(buckets)
  98                 .build())
  99             .build();
 100     }
 101
 102     @Override
 103     public void injectDeserializerRegistry(DeserializerRegistry deserializerRegistry) {
 104         registry = deserializerRegistry;
 105     }
 106
 107 }