openflow-protocol-impl/src/main/java/org/opendaylight/openflowjava/protocol/impl/deserialization/instruction/AbstractInstructionDeserializer.java

   1 /*\r
   2  * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved.\r
   3  *\r
   4  * This program and the accompanying materials are made available under the\r
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,\r
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html\r
   7  */\r
   8 \r
   9 package org.opendaylight.openflowjava.protocol.impl.deserialization.instruction;\r
  10 \r
  11 import io.netty.buffer.ByteBuf;\r
  12 \r
  13 import org.opendaylight.openflowjava.protocol.api.extensibility.HeaderDeserializer;\r
  14 import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;\r
  15 import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;\r
  16 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.ApplyActions;\r
  17 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.ClearActions;\r
  18 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.GotoTable;\r
  19 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.Meter;\r
  20 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.WriteActions;\r
  21 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.WriteMetadata;\r
  22 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.instructions.grouping.Instruction;\r
  23 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.instructions.grouping.InstructionBuilder;\r
  24 \r
  25 /**\r
  26  * @author michal.polkorab\r
  27  *\r
  28  */\r
  29 public abstract class AbstractInstructionDeserializer implements OFDeserializer<Instruction>,\r
  30         HeaderDeserializer<Instruction> {\r
  31 \r
  32     @Override\r
  33     public Instruction deserializeHeader(ByteBuf rawMessage) {\r
  34         InstructionBuilder builder = processHeader(rawMessage);\r
  35         rawMessage.skipBytes(EncodeConstants.SIZE_OF_SHORT_IN_BYTES);\r
  36         return builder.build();\r
  37     }\r
  38 \r
  39     protected InstructionBuilder processHeader(ByteBuf input) {\r
  40         InstructionBuilder builder = new InstructionBuilder();\r
  41         int type = input.readUnsignedShort();\r
  42         switch (type) {\r
  43         case 1:\r
  44             builder.setType(GotoTable.class);\r
  45             break;\r
  46         case 2:\r
  47             builder.setType(WriteMetadata.class);\r
  48             break;\r
  49         case 3:\r
  50             builder.setType(WriteActions.class);\r
  51             break;\r
  52         case 4:\r
  53             builder.setType(ApplyActions.class);\r
  54             break;\r
  55         case 5:\r
  56             builder.setType(ClearActions.class);\r
  57             break;\r
  58         case 6:\r
  59             builder.setType(Meter.class);\r
  60             break;\r
  61         default:\r
  62             throw new IllegalStateException("Unknown instruction type received, type: " + type);\r
  63         }\r
  64         return builder;\r
  65     }\r
  66 }\r