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

   1 /* Copyright (C)2013 Pantheon Technologies, s.r.o. All rights reserved. */\r
   2 package org.opendaylight.openflowjava.protocol.impl.deserialization.factories;\r
   3 \r
   4 import io.netty.buffer.ByteBuf;\r
   5 \r
   6 import java.math.BigInteger;\r
   7 \r
   8 import org.opendaylight.openflowjava.protocol.impl.deserialization.OFDeserializer;\r
   9 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.types.rev130731.Capabilities;\r
  10 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutput;\r
  11 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.GetFeaturesOutputBuilder;\r
  12 \r
  13 /**\r
  14  * @author michal.polkorab\r
  15  *\r
  16  */\r
  17 public class FeaturesReplyMessageFactory implements OFDeserializer<GetFeaturesOutput>{\r
  18     \r
  19     private static final byte PADDING_IN_FEATURES_REPLY_HEADER = 2;\r
  20     \r
  21     private static FeaturesReplyMessageFactory instance;\r
  22 \r
  23     private FeaturesReplyMessageFactory() {\r
  24         // do nothing, just singleton\r
  25     }\r
  26     \r
  27     /**\r
  28      * @return singleton factory\r
  29      */\r
  30     public static synchronized FeaturesReplyMessageFactory getInstance() {\r
  31         if (instance == null) {\r
  32             instance = new FeaturesReplyMessageFactory();\r
  33         }\r
  34         return instance;\r
  35     }\r
  36     \r
  37     @Override\r
  38     public GetFeaturesOutput bufferToMessage(ByteBuf rawMessage, short version) {\r
  39         GetFeaturesOutputBuilder builder = new GetFeaturesOutputBuilder();\r
  40         builder.setVersion(version);\r
  41         builder.setXid(rawMessage.readUnsignedInt());\r
  42         byte[] datapathId = new byte[Long.SIZE/Byte.SIZE];\r
  43         rawMessage.readBytes(datapathId);\r
  44         builder.setDatapathId(new BigInteger(datapathId));\r
  45         builder.setBuffers(rawMessage.readUnsignedInt());\r
  46         builder.setTables(rawMessage.readUnsignedByte());\r
  47         builder.setAuxiliaryId(rawMessage.readUnsignedByte());\r
  48         rawMessage.skipBytes(PADDING_IN_FEATURES_REPLY_HEADER);\r
  49         builder.setCapabilities(createCapabilities(rawMessage.readUnsignedInt()));\r
  50         builder.setReserved(rawMessage.readUnsignedInt());\r
  51         return builder.build();\r
  52     }\r
  53 \r
  54     private static Capabilities createCapabilities(long input) {\r
  55         final Boolean FLOW_STATS = (input & (1 << 0)) != 0;\r
  56         final Boolean TABLE_STATS = (input & (1 << 1)) != 0;\r
  57         final Boolean PORT_STATS = (input & (1 << 2)) != 0;\r
  58         final Boolean GROUP_STATS = (input & (1 << 3)) != 0;\r
  59         final Boolean IP_REASM = (input & (1 << 5)) != 0;\r
  60         final Boolean QUEUE_STATS = (input & (1 << 6)) != 0;\r
  61         final Boolean PORT_BLOCKED = (input & (1 << 8)) != 0;\r
  62         return new Capabilities(FLOW_STATS, GROUP_STATS, IP_REASM,\r
  63                 PORT_BLOCKED, PORT_STATS, QUEUE_STATS, TABLE_STATS);\r
  64     }\r
  65 \r
  66 }\r