openflowjava/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 import java.util.ArrayList;
  13 import java.util.List;
  14 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
  15 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.augments.rev150225.RateQueuePropertyBuilder;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.PortNumber;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.QueueId;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.QueueProperties;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetQueueConfigOutput;
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetQueueConfigOutputBuilder;
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.get.config.reply.Queues;
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.get.config.reply.QueuesBuilder;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.property.header.QueueProperty;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.queue.property.header.QueuePropertyBuilder;
  26
  27 /**
  28  * Translates QueueGetConfigReply messages (OpenFlow v1.0).
  29  *
  30  * @author michal.polkorab
  31  */
  32 public class OF10QueueGetConfigReplyMessageFactory implements OFDeserializer<GetQueueConfigOutput> {
  33
  34     private static final byte PADDING_IN_QUEUE_GET_CONFIG_REPLY_HEADER = 6;
  35     private static final byte PADDING_IN_PACKET_QUEUE_HEADER = 2;
  36     private static final byte PADDING_IN_QUEUE_PROPERTY_HEADER = 4;
  37     private static final byte PADDING_IN_RATE_QUEUE_PROPERTY = 6;
  38     private static final byte PACKET_QUEUE_HEADER_LENGTH = 8;
  39
  40     @Override
  41     public GetQueueConfigOutput deserialize(ByteBuf rawMessage) {
  42         GetQueueConfigOutputBuilder builder = new GetQueueConfigOutputBuilder();
  43         builder.setVersion((short) EncodeConstants.OF10_VERSION_ID);
  44         builder.setXid(rawMessage.readUnsignedInt());
  45         builder.setPort(new PortNumber((long) rawMessage.readUnsignedShort()));
  46         rawMessage.skipBytes(PADDING_IN_QUEUE_GET_CONFIG_REPLY_HEADER);
  47         builder.setQueues(createQueuesList(rawMessage));
  48         return builder.build();
  49     }
  50
  51     private static List<Queues> createQueuesList(ByteBuf input) {
  52         List<Queues> queuesList = new ArrayList<>();
  53         while (input.readableBytes() > 0) {
  54             QueuesBuilder queueBuilder = new QueuesBuilder();
  55             queueBuilder.setQueueId(new QueueId(input.readUnsignedInt()));
  56             int length = input.readUnsignedShort();
  57             input.skipBytes(PADDING_IN_PACKET_QUEUE_HEADER);
  58             queueBuilder.setQueueProperty(createPropertiesList(input, length - PACKET_QUEUE_HEADER_LENGTH));
  59             queuesList.add(queueBuilder.build());
  60         }
  61         return queuesList;
  62     }
  63
  64     private static List<QueueProperty> createPropertiesList(ByteBuf input, int length) {
  65         int propertiesLength = length;
  66         List<QueueProperty> propertiesList = new ArrayList<>();
  67         while (propertiesLength > 0) {
  68             QueuePropertyBuilder propertiesBuilder = new QueuePropertyBuilder();
  69             QueueProperties property = QueueProperties.forValue(input.readUnsignedShort());
  70             propertiesBuilder.setProperty(property);
  71             propertiesLength -= input.readUnsignedShort();
  72             input.skipBytes(PADDING_IN_QUEUE_PROPERTY_HEADER);
  73             if (property.equals(QueueProperties.OFPQTMINRATE)) {
  74                 propertiesBuilder.addAugmentation(new RateQueuePropertyBuilder()
  75                     .setRate(input.readUnsignedShort())
  76                     .build());
  77                 input.skipBytes(PADDING_IN_RATE_QUEUE_PROPERTY);
  78             }
  79             propertiesList.add(propertiesBuilder.build());
  80         }
  81         return propertiesList;
  82     }
  83 }