openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/factories/FeaturesReplyMessageFactory.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.math.BigInteger;
  14
  15 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
  16 import org.opendaylight.openflowjava.protocol.impl.util.EncodeConstants;
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.Capabilities;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutputBuilder;
  20
  21 /**
  22  * Translates FeaturesReply messages
  23  * @author michal.polkorab
  24  * @author timotej.kubas
  25  */
  26 public class FeaturesReplyMessageFactory implements OFDeserializer<GetFeaturesOutput>{
  27
  28     private static final byte PADDING_IN_FEATURES_REPLY_HEADER = 2;
  29
  30     @Override
  31     public GetFeaturesOutput deserialize(ByteBuf rawMessage) {
  32         GetFeaturesOutputBuilder builder = new GetFeaturesOutputBuilder();
  33         builder.setVersion((short) EncodeConstants.OF13_VERSION_ID);
  34         builder.setXid(rawMessage.readUnsignedInt());
  35         byte[] datapathId = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
  36         rawMessage.readBytes(datapathId);
  37         builder.setDatapathId(new BigInteger(1, datapathId));
  38         builder.setBuffers(rawMessage.readUnsignedInt());
  39         builder.setTables(rawMessage.readUnsignedByte());
  40         builder.setAuxiliaryId(rawMessage.readUnsignedByte());
  41         rawMessage.skipBytes(PADDING_IN_FEATURES_REPLY_HEADER);
  42         builder.setCapabilities(createCapabilities(rawMessage.readUnsignedInt()));
  43         builder.setReserved(rawMessage.readUnsignedInt());
  44         return builder.build();
  45     }
  46
  47     private static Capabilities createCapabilities(long input) {
  48         final Boolean FLOW_STATS = (input & (1 << 0)) != 0;
  49         final Boolean TABLE_STATS = (input & (1 << 1)) != 0;
  50         final Boolean PORT_STATS = (input & (1 << 2)) != 0;
  51         final Boolean GROUP_STATS = (input & (1 << 3)) != 0;
  52         final Boolean IP_REASM = (input & (1 << 5)) != 0;
  53         final Boolean QUEUE_STATS = (input & (1 << 6)) != 0;
  54         final Boolean PORT_BLOCKED = (input & (1 << 8)) != 0;
  55         return new Capabilities(FLOW_STATS, GROUP_STATS, IP_REASM,
  56                 PORT_BLOCKED, PORT_STATS, QUEUE_STATS, TABLE_STATS);
  57     }
  58
  59 }