openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/factories/OF10QueueGetConfigReplyMessageFactory.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.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.RateQueueProperty;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev131002.RateQueuePropertyBuilder;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortNumber;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.QueueId;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.QueueProperties;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetQueueConfigOutput;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetQueueConfigOutputBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.get.config.reply.Queues;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.get.config.reply.QueuesBuilder;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.property.header.QueueProperty;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.property.header.QueuePropertyBuilder;
  28
  29 /**
  30  * Translates QueueGetConfigReply messages (OpenFlow v1.0)
  31  * @author michal.polkorab
  32  */
  33 public class OF10QueueGetConfigReplyMessageFactory implements OFDeserializer<GetQueueConfigOutput> {
  34
  35     private static final byte PADDING_IN_QUEUE_GET_CONFIG_REPLY_HEADER = 6;
  36     private static final byte PADDING_IN_PACKET_QUEUE_HEADER = 2;
  37     private static final byte PADDING_IN_QUEUE_PROPERTY_HEADER = 4;
  38     private static final byte PADDING_IN_RATE_QUEUE_PROPERTY = 6;
  39     private static final byte PACKET_QUEUE_HEADER_LENGTH = 8;
  40
  41     private static OF10QueueGetConfigReplyMessageFactory instance;
  42
  43     private OF10QueueGetConfigReplyMessageFactory() {
  44         // singleton
  45     }
  46
  47     /**
  48      *
  49      * @return singleton factory
  50      */
  51     public static synchronized OF10QueueGetConfigReplyMessageFactory getInstance(){
  52
  53         if(instance == null){
  54             instance = new OF10QueueGetConfigReplyMessageFactory();
  55         }
  56         return instance;
  57     }
  58
  59     @Override
  60     public GetQueueConfigOutput bufferToMessage(ByteBuf rawMessage, short version) {
  61         GetQueueConfigOutputBuilder builder = new GetQueueConfigOutputBuilder();
  62         builder.setVersion(version);
  63         builder.setXid((rawMessage.readUnsignedInt()));
  64         builder.setPort(new PortNumber((long) rawMessage.readUnsignedShort()));
  65         rawMessage.skipBytes(PADDING_IN_QUEUE_GET_CONFIG_REPLY_HEADER);
  66         builder.setQueues(createQueuesList(rawMessage));
  67         return builder.build();
  68     }
  69
  70     private static List<Queues> createQueuesList(ByteBuf input){
  71         List<Queues> queuesList = new ArrayList<>();
  72         while (input.readableBytes() > 0) {
  73             QueuesBuilder queueBuilder = new QueuesBuilder();
  74             queueBuilder.setQueueId(new QueueId(input.readUnsignedInt()));
  75             int length = input.readUnsignedShort();
  76             input.skipBytes(PADDING_IN_PACKET_QUEUE_HEADER);
  77             queueBuilder.setQueueProperty(createPropertiesList(input, length - PACKET_QUEUE_HEADER_LENGTH));
  78             queuesList.add(queueBuilder.build());
  79         }
  80         return queuesList;
  81     }
  82
  83     private static List<QueueProperty> createPropertiesList(ByteBuf input, int length){
  84         int propertiesLength = length;
  85         List<QueueProperty> propertiesList = new ArrayList<>();
  86         while (propertiesLength > 0) {
  87             QueuePropertyBuilder propertiesBuilder = new QueuePropertyBuilder();
  88             QueueProperties property = QueueProperties.forValue(input.readUnsignedShort());
  89             propertiesBuilder.setProperty(property);
  90             propertiesLength -= input.readUnsignedShort();
  91             input.skipBytes(PADDING_IN_QUEUE_PROPERTY_HEADER);
  92             if (property.equals(QueueProperties.OFPQTMINRATE)) {
  93                 RateQueuePropertyBuilder rateBuilder = new RateQueuePropertyBuilder();
  94                 rateBuilder.setRate(input.readUnsignedShort());
  95                 propertiesBuilder.addAugmentation(RateQueueProperty.class, rateBuilder.build());
  96                 input.skipBytes(PADDING_IN_RATE_QUEUE_PROPERTY);
  97             }
  98             propertiesList.add(propertiesBuilder.build());
  99         }
 100         return propertiesList;
 101     }
 102 }