openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/factories/EchoReplyMessageFactory.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 org.opendaylight.openflowjava.protocol.impl.deserialization.OFDeserializer;\r
   7 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoOutput;\r
   8 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.protocol.rev130731.EchoOutputBuilder;\r
   9 \r
  10 /**\r
  11  * Translates EchoReply messages\r
  12  * @author michal.polkorab\r
  13  * @author timotej.kubas\r
  14  */\r
  15 public class EchoReplyMessageFactory implements OFDeserializer<EchoOutput> {\r
  16 \r
  17     private static EchoReplyMessageFactory instance;\r
  18 \r
  19     private EchoReplyMessageFactory() {\r
  20         // do nothing, just singleton\r
  21     }\r
  22     \r
  23     /**\r
  24      * @return singleton factory\r
  25      */\r
  26     public static synchronized EchoReplyMessageFactory getInstance() {\r
  27         if (instance == null) {\r
  28             instance = new EchoReplyMessageFactory();\r
  29         }\r
  30         return instance;\r
  31     }\r
  32     \r
  33     @Override\r
  34     public EchoOutput bufferToMessage(ByteBuf rawMessage, short version) {\r
  35         EchoOutputBuilder builder = new EchoOutputBuilder();\r
  36         builder.setVersion(version);\r
  37         builder.setXid(rawMessage.readUnsignedInt());\r
  38         int remainingBytes = rawMessage.readableBytes();\r
  39         if (remainingBytes > 0) {\r
  40             builder.setData(rawMessage.readBytes(remainingBytes).array());\r
  41         }\r
  42         return builder.build();\r
  43     }\r
  44 \r
  45 }\r