openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/factories/QueueGetConfigReplyMessageFactory.java

   1 /*
   2  * Copyright (c) 2013 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.openflowjava.protocol.impl.deserialization.factories;
  10
  11 import io.netty.buffer.ByteBuf;
  12
  13 import java.util.ArrayList;
  14 import java.util.List;
  15
  16 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistry;
  17 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistryInjector;
  18 import org.opendaylight.openflowjava.protocol.api.extensibility.MessageCodeKey;
  19 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
  20 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.RateQueueProperty;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.RateQueuePropertyBuilder;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortNumber;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.QueueId;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.QueueProperties;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetQueueConfigOutput;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetQueueConfigOutputBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.get.config.reply.Queues;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.get.config.reply.QueuesBuilder;
  30 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.property.header.QueueProperty;
  31 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.property.header.QueuePropertyBuilder;
  32
  33 /**
  34  * Translates QueueGetConfigReply messages
  35  * @author timotej.kubas
  36  * @author michal.polkorab
  37  */
  38 public class QueueGetConfigReplyMessageFactory implements OFDeserializer<GetQueueConfigOutput>,
  39         DeserializerRegistryInjector {
  40
  41     private static final byte PADDING_IN_QUEUE_GET_CONFIG_REPLY_HEADER = 4;
  42     private static final byte PADDING_IN_PACKET_QUEUE_HEADER = 6;
  43     private static final byte PADDING_IN_QUEUE_PROPERTY_HEADER = 4;
  44     private static final int PADDING_IN_RATE_QUEUE_PROPERTY = 6;
  45     private static final byte PACKET_QUEUE_LENGTH = 16;
  46     private static final byte QUEUE_PROP_HEADER_SIZE = 8;
  47     private DeserializerRegistry registry;
  48
  49     @Override
  50     public GetQueueConfigOutput deserialize(ByteBuf rawMessage) {
  51         GetQueueConfigOutputBuilder builder = new GetQueueConfigOutputBuilder();
  52         builder.setVersion((short) EncodeConstants.OF13_VERSION_ID);
  53         builder.setXid((rawMessage.readUnsignedInt()));
  54         builder.setPort(new PortNumber(rawMessage.readUnsignedInt()));
  55         rawMessage.skipBytes(PADDING_IN_QUEUE_GET_CONFIG_REPLY_HEADER);
  56         builder.setQueues(createQueuesList(rawMessage));
  57         return builder.build();
  58     }
  59
  60     private List<Queues> createQueuesList(ByteBuf input){
  61         List<Queues> queuesList = new ArrayList<>();
  62         while (input.readableBytes() > 0) {
  63             QueuesBuilder queueBuilder = new QueuesBuilder();
  64             queueBuilder.setQueueId(new QueueId(input.readUnsignedInt()));
  65             queueBuilder.setPort(new PortNumber(input.readUnsignedInt()));
  66             int length = input.readUnsignedShort();
  67             input.skipBytes(PADDING_IN_PACKET_QUEUE_HEADER);
  68             queueBuilder.setQueueProperty(createPropertiesList(input, length - PACKET_QUEUE_LENGTH));
  69             queuesList.add(queueBuilder.build());
  70         }
  71         return queuesList;
  72     }
  73
  74     private List<QueueProperty> createPropertiesList(ByteBuf input, int length){
  75         int propertiesLength = length;
  76         List<QueueProperty> propertiesList = new ArrayList<>();
  77         while (propertiesLength > 0) {
  78             QueuePropertyBuilder propertiesBuilder = new QueuePropertyBuilder();
  79             QueueProperties property = QueueProperties.forValue(input.readUnsignedShort());
  80             propertiesBuilder.setProperty(property);
  81             int currentPropertyLength = input.readUnsignedShort();
  82             propertiesLength -= currentPropertyLength;
  83             input.skipBytes(PADDING_IN_QUEUE_PROPERTY_HEADER);
  84             if (property.equals(QueueProperties.OFPQTMINRATE) || property.equals(QueueProperties.OFPQTMAXRATE)) {
  85                 RateQueuePropertyBuilder rateBuilder = new RateQueuePropertyBuilder();
  86                 rateBuilder.setRate(input.readUnsignedShort());
  87                 propertiesBuilder.addAugmentation(RateQueueProperty.class, rateBuilder.build());
  88                 input.skipBytes(PADDING_IN_RATE_QUEUE_PROPERTY);
  89             } else if (property.equals(QueueProperties.OFPQTEXPERIMENTER)) {
  90                 // return index to property start, so that the experimenter properties are deserialized
  91                 // correctly - as whole ofp_queue_prop_experimenter property
  92                 input.readerIndex(input.readerIndex() - 2 * EncodeConstants.SIZE_OF_SHORT_IN_BYTES
  93                         - PADDING_IN_QUEUE_PROPERTY_HEADER);
  94                 OFDeserializer<QueueProperty> deserializer = registry.getDeserializer(
  95                         new MessageCodeKey(EncodeConstants.OF13_VERSION_ID,
  96                                 EncodeConstants.EXPERIMENTER_VALUE, QueueProperty.class));
  97                 QueueProperty expProp = deserializer.deserialize(input.slice(input.readerIndex(),
  98                         currentPropertyLength - QUEUE_PROP_HEADER_SIZE));
  99                 propertiesList.add(expProp);
 100                 continue;
 101             }
 102             propertiesList.add(propertiesBuilder.build());
 103         }
 104         return propertiesList;
 105     }
 106
 107     @Override
 108     public void injectDeserializerRegistry(DeserializerRegistry deserializerRegistry) {
 109         this.registry = deserializerRegistry;
 110     }
 111
 112 }