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.impl.deserialization.OFDeserializer;
  17 import org.opendaylight.openflowjava.protocol.impl.util.EncodeConstants;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.ExperimenterQueuePropertyBuilder;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.RateQueueProperty;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.RateQueuePropertyBuilder;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortNumber;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.QueueId;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.QueueProperties;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetQueueConfigOutput;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetQueueConfigOutputBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.get.config.reply.Queues;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.get.config.reply.QueuesBuilder;
  28 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.property.header.QueueProperty;
  29 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.property.header.QueuePropertyBuilder;
  30
  31 /**
  32  * Translates QueueGetConfigReply messages
  33  * @author timotej.kubas
  34  * @author michal.polkorab
  35  */
  36 public class QueueGetConfigReplyMessageFactory implements OFDeserializer<GetQueueConfigOutput> {
  37
  38     private static final byte PADDING_IN_QUEUE_GET_CONFIG_REPLY_HEADER = 4;
  39     private static final byte PADDING_IN_PACKET_QUEUE_HEADER = 6;
  40     private static final byte PADDING_IN_QUEUE_PROPERTY_HEADER = 4;
  41     private static final int PADDING_IN_RATE_QUEUE_PROPERTY = 6;
  42     private static final int PADDING_IN_EXPERIMENTER_QUEUE_PROPERTY = 4;
  43     private static final byte PACKET_QUEUE_LENGTH = 16;
  44
  45     private static QueueGetConfigReplyMessageFactory instance;
  46
  47     private QueueGetConfigReplyMessageFactory() {
  48         // singleton
  49     }
  50
  51     /**
  52      *
  53      * @return singleton factory
  54      */
  55     public static synchronized QueueGetConfigReplyMessageFactory getInstance(){
  56
  57         if(instance == null){
  58             instance = new QueueGetConfigReplyMessageFactory();
  59         }
  60         return instance;
  61     }
  62
  63     @Override
  64     public GetQueueConfigOutput bufferToMessage(ByteBuf rawMessage, short version) {
  65         GetQueueConfigOutputBuilder builder = new GetQueueConfigOutputBuilder();
  66         builder.setVersion(version);
  67         builder.setXid((rawMessage.readUnsignedInt()));
  68         builder.setPort(new PortNumber(rawMessage.readUnsignedInt()));
  69         rawMessage.skipBytes(PADDING_IN_QUEUE_GET_CONFIG_REPLY_HEADER);
  70         builder.setQueues(createQueuesList(rawMessage));
  71         return builder.build();
  72     }
  73
  74     private static List<Queues> createQueuesList(ByteBuf input){
  75         List<Queues> queuesList = new ArrayList<>();
  76         while (input.readableBytes() > 0) {
  77             QueuesBuilder queueBuilder = new QueuesBuilder();
  78             queueBuilder.setQueueId(new QueueId(input.readUnsignedInt()));
  79             queueBuilder.setPort(new PortNumber(input.readUnsignedInt()));
  80             int length = input.readUnsignedShort();
  81             input.skipBytes(PADDING_IN_PACKET_QUEUE_HEADER);
  82             queueBuilder.setQueueProperty(createPropertiesList(input, length - PACKET_QUEUE_LENGTH));
  83             queuesList.add(queueBuilder.build());
  84         }
  85         return queuesList;
  86     }
  87
  88     private static List<QueueProperty> createPropertiesList(ByteBuf input, int length){
  89         int propertiesLength = length;
  90         List<QueueProperty> propertiesList = new ArrayList<>();
  91         while (propertiesLength > 0) {
  92             QueuePropertyBuilder propertiesBuilder = new QueuePropertyBuilder();
  93             QueueProperties property = QueueProperties.forValue(input.readUnsignedShort());
  94             propertiesBuilder.setProperty(property);
  95             int currentPropertyLength = input.readUnsignedShort();
  96             propertiesLength -= currentPropertyLength;
  97             input.skipBytes(PADDING_IN_QUEUE_PROPERTY_HEADER);
  98             if (property.equals(QueueProperties.OFPQTMINRATE) || property.equals(QueueProperties.OFPQTMAXRATE)) {
  99                 RateQueuePropertyBuilder rateBuilder = new RateQueuePropertyBuilder();
 100                 rateBuilder.setRate(input.readUnsignedShort());
 101                 propertiesBuilder.addAugmentation(RateQueueProperty.class, rateBuilder.build());
 102                 input.skipBytes(PADDING_IN_RATE_QUEUE_PROPERTY);
 103             } else if (property.equals(QueueProperties.OFPQTEXPERIMENTER)) {
 104                 ExperimenterQueuePropertyBuilder expBuilder = new ExperimenterQueuePropertyBuilder();
 105                 expBuilder.setExperimenter(input.readUnsignedInt());
 106                 input.skipBytes(PADDING_IN_EXPERIMENTER_QUEUE_PROPERTY);
 107                 expBuilder.setData(input.readBytes(currentPropertyLength
 108                         - EncodeConstants.SIZE_OF_INT_IN_BYTES - PADDING_IN_EXPERIMENTER_QUEUE_PROPERTY).array());
 109                 propertiesBuilder.addAugmentation(RateQueueProperty.class, expBuilder.build());
 110             }
 111             propertiesList.add(propertiesBuilder.build());
 112         }
 113         return propertiesList;
 114     }
 115
 116 }