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  * Translates FeaturesReply messages\r
  15  * @author michal.polkorab\r
  16  * @author timotej.kubas\r
  17  */\r
  18 public class FeaturesReplyMessageFactory implements OFDeserializer<GetFeaturesOutput>{\r
  19     \r
  20     private static final byte PADDING_IN_FEATURES_REPLY_HEADER = 2;\r
  21     \r
  22     private static FeaturesReplyMessageFactory instance;\r
  23 \r
  24     private FeaturesReplyMessageFactory() {\r
  25         // do nothing, just singleton\r
  26     }\r
  27     \r
  28     /**\r
  29      * @return singleton factory\r
  30      */\r
  31     public static synchronized FeaturesReplyMessageFactory getInstance() {\r
  32         if (instance == null) {\r
  33             instance = new FeaturesReplyMessageFactory();\r
  34         }\r
  35         return instance;\r
  36     }\r
  37     \r
  38     @Override\r
  39     public GetFeaturesOutput bufferToMessage(ByteBuf rawMessage, short version) {\r
  40         GetFeaturesOutputBuilder builder = new GetFeaturesOutputBuilder();\r
  41         builder.setVersion(version);\r
  42         builder.setXid(rawMessage.readUnsignedInt());\r
  43         byte[] datapathId = new byte[Long.SIZE/Byte.SIZE];\r
  44         rawMessage.readBytes(datapathId);\r
  45         builder.setDatapathId(new BigInteger(datapathId));\r
  46         builder.setBuffers(rawMessage.readUnsignedInt());\r
  47         builder.setTables(rawMessage.readUnsignedByte());\r
  48         builder.setAuxiliaryId(rawMessage.readUnsignedByte());\r
  49         rawMessage.skipBytes(PADDING_IN_FEATURES_REPLY_HEADER);\r
  50         builder.setCapabilities(createCapabilities(rawMessage.readUnsignedInt()));\r
  51         builder.setReserved(rawMessage.readUnsignedInt());\r
  52         return builder.build();\r
  53     }\r
  54 \r
  55     private static Capabilities createCapabilities(long input) {\r
  56         final Boolean FLOW_STATS = (input & (1 << 0)) != 0;\r
  57         final Boolean TABLE_STATS = (input & (1 << 1)) != 0;\r
  58         final Boolean PORT_STATS = (input & (1 << 2)) != 0;\r
  59         final Boolean GROUP_STATS = (input & (1 << 3)) != 0;\r
  60         final Boolean IP_REASM = (input & (1 << 5)) != 0;\r
  61         final Boolean QUEUE_STATS = (input & (1 << 6)) != 0;\r
  62         final Boolean PORT_BLOCKED = (input & (1 << 8)) != 0;\r
  63         return new Capabilities(FLOW_STATS, GROUP_STATS, IP_REASM,\r
  64                 PORT_BLOCKED, PORT_STATS, QUEUE_STATS, TABLE_STATS);\r
  65     }\r
  66 \r
  67 }\r