openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/factories/OF10FlowRemovedMessageFactory.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.impl.deserialization.OFDeserializer;
  16 import org.opendaylight.openflowjava.protocol.impl.util.EncodeConstants;
  17 import org.opendaylight.openflowjava.protocol.impl.util.OF10MatchDeserializer;
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.FlowRemovedReason;
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FlowRemovedMessage;
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.FlowRemovedMessageBuilder;
  21
  22 /**
  23  * Translates FlowRemoved messages (OpenFlow v1.0)
  24  * @author michal.polkorab
  25  */
  26 public class OF10FlowRemovedMessageFactory implements OFDeserializer<FlowRemovedMessage> {
  27
  28     private static final byte PADDING_IN_FLOW_REMOVED_MESSAGE = 1;
  29     private static final byte PADDING_IN_FLOW_REMOVED_MESSAGE_2 = 2;
  30
  31
  32     private static OF10FlowRemovedMessageFactory instance;
  33
  34     private OF10FlowRemovedMessageFactory() {
  35         // singleton
  36     }
  37
  38     /**
  39      * @return singleton factory
  40      */
  41     public static synchronized OF10FlowRemovedMessageFactory getInstance(){
  42         if(instance == null){
  43             instance = new OF10FlowRemovedMessageFactory();
  44         }
  45         return instance;
  46     }
  47
  48     @Override
  49     public FlowRemovedMessage bufferToMessage(ByteBuf rawMessage, short version) {
  50         FlowRemovedMessageBuilder builder = new FlowRemovedMessageBuilder();
  51         builder.setVersion(version);
  52         builder.setXid(rawMessage.readUnsignedInt());
  53         builder.setMatchV10(OF10MatchDeserializer.createMatchV10(rawMessage));
  54         byte[] cookie = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
  55         rawMessage.readBytes(cookie);
  56         builder.setCookie(new BigInteger(1, cookie));
  57         builder.setPriority(rawMessage.readUnsignedShort());
  58         builder.setReason(FlowRemovedReason.forValue(rawMessage.readUnsignedByte()));
  59         rawMessage.skipBytes(PADDING_IN_FLOW_REMOVED_MESSAGE);
  60         builder.setDurationSec(rawMessage.readUnsignedInt());
  61         builder.setDurationNsec(rawMessage.readUnsignedInt());
  62         builder.setIdleTimeout(rawMessage.readUnsignedShort());
  63         rawMessage.skipBytes(PADDING_IN_FLOW_REMOVED_MESSAGE_2);
  64         byte[] packet_count = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
  65         rawMessage.readBytes(packet_count);
  66         builder.setPacketCount(new BigInteger(1, packet_count));
  67         byte[] byte_count = new byte[EncodeConstants.SIZE_OF_LONG_IN_BYTES];
  68         rawMessage.readBytes(byte_count);
  69         builder.setByteCount(new BigInteger(1, byte_count));
  70         return builder.build();
  71     }
  72
  73
  74 }