openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/factories/PacketInMessageFactory.java

   1 package org.opendaylight.openflowjava.protocol.impl.deserialization.factories;\r
   2 \r
   3 import io.netty.buffer.ByteBuf;\r
   4 \r
   5 import java.math.BigInteger;\r
   6 \r
   7 import org.opendaylight.openflowjava.protocol.impl.deserialization.OFDeserializer;\r
   8 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.TableId;\r
   9 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessage;\r
  10 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.PacketInMessageBuilder;\r
  11 \r
  12 /**\r
  13  * @author michal.polkorab\r
  14  * @author timotej.kubas\r
  15  */\r
  16 public class PacketInMessageFactory implements OFDeserializer<PacketInMessage> {\r
  17 \r
  18     private static PacketInMessageFactory instance;\r
  19     private static final byte PADDING_IN_PACKET_IN_HEADER = 2;\r
  20     \r
  21     private PacketInMessageFactory() {\r
  22         // Singleton\r
  23     }\r
  24     \r
  25     /**\r
  26      * @return singleton factory\r
  27      */\r
  28     public static PacketInMessageFactory getInstance(){\r
  29         if(instance == null){\r
  30             instance = new PacketInMessageFactory();\r
  31         }\r
  32         \r
  33         return instance;\r
  34     }\r
  35 \r
  36     @Override\r
  37     public PacketInMessage bufferToMessage(ByteBuf rawMessage, short version) {\r
  38         PacketInMessageBuilder pimb = new PacketInMessageBuilder();\r
  39         pimb.setVersion(version);\r
  40         pimb.setXid(rawMessage.readUnsignedInt());\r
  41         pimb.setBufferId(rawMessage.readUnsignedInt());\r
  42         pimb.setTotalLen(rawMessage.readUnsignedShort());\r
  43         pimb.setReason(rawMessage.readUnsignedByte());\r
  44         pimb.setTableId(new TableId((long)rawMessage.readUnsignedByte()));\r
  45         \r
  46         byte[] cookie = new byte[8];\r
  47         rawMessage.readBytes(cookie);\r
  48         pimb.setCookie(new BigInteger(cookie));\r
  49         // TODO - implement match factories to finish this factory \r
  50         rawMessage.skipBytes(PADDING_IN_PACKET_IN_HEADER);\r
  51         \r
  52         pimb.setData(rawMessage.readBytes(rawMessage.readableBytes()).array());\r
  53         \r
  54         return pimb.build();\r
  55     }\r
  56 }\r