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

   1 /*
   2  * Copyright (c) 2013 Pantheon Technologies s.r.o. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.openflowjava.protocol.impl.deserialization;
  10
  11 import java.util.HashMap;
  12 import java.util.Map;
  13
  14 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistry;
  15 import org.opendaylight.openflowjava.protocol.api.extensibility.DeserializerRegistryInjector;
  16 import org.opendaylight.openflowjava.protocol.api.extensibility.MessageCodeKey;
  17 import org.opendaylight.openflowjava.protocol.api.extensibility.OFGeneralDeserializer;
  18 import org.opendaylight.openflowjava.protocol.impl.util.ActionsDeserializer;
  19 import org.opendaylight.openflowjava.protocol.impl.util.EncodeConstants;
  20 import org.opendaylight.openflowjava.protocol.impl.util.InstructionsDeserializer;
  21 import org.opendaylight.openflowjava.protocol.impl.util.MatchDeserializer;
  22 import org.opendaylight.openflowjava.protocol.impl.util.OF10ActionsDeserializer;
  23 import org.opendaylight.openflowjava.protocol.impl.util.OF10MatchDeserializer;
  24 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.grouping.Action;
  25 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.instruction.rev130731.instructions.grouping.Instruction;
  26 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.match.grouping.Match;
  27 import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.oxm.rev130731.match.v10.grouping.MatchV10;
  28
  29 /**
  30  * Stores and registers deserializers
  31  * @author michal.polkorab
  32  */
  33 public class DeserializerRegistryImpl implements DeserializerRegistry {
  34
  35     private Map<MessageCodeKey, OFGeneralDeserializer> registry;
  36
  37     /**
  38      * Decoder table provisioning
  39      */
  40     @Override
  41     public void init() {
  42         registry = new HashMap<>();
  43         // register message deserializers
  44         MessageDerializerInitializer.registerMessageDeserializers(this);
  45
  46         // register common structure deserializers
  47         registerDeserializer(new MessageCodeKey(EncodeConstants.OF10_VERSION_ID,
  48                 EncodeConstants.EMPTY_VALUE, MatchV10.class), new OF10MatchDeserializer());
  49         registerDeserializer(new MessageCodeKey(EncodeConstants.OF10_VERSION_ID,
  50                 EncodeConstants.EMPTY_VALUE, Action.class), new OF10ActionsDeserializer());
  51         registerDeserializer(new MessageCodeKey(EncodeConstants.OF13_VERSION_ID,
  52                 EncodeConstants.EMPTY_VALUE, Match.class), new MatchDeserializer());
  53         registerDeserializer(new MessageCodeKey(EncodeConstants.OF13_VERSION_ID,
  54                 EncodeConstants.EMPTY_VALUE, Action.class), new ActionsDeserializer());
  55         registerDeserializer(new MessageCodeKey(EncodeConstants.OF13_VERSION_ID,
  56                 EncodeConstants.EMPTY_VALUE, Instruction.class), new InstructionsDeserializer());
  57
  58         // register match entry deserializers
  59         MatchEntryDeserializerInitializer.registerMatchEntryDeserializers(this);
  60     }
  61
  62     @Override
  63     @SuppressWarnings("unchecked")
  64     public <DESERIALIZER_TYPE extends OFGeneralDeserializer> DESERIALIZER_TYPE getDeserializer(
  65             MessageCodeKey key) {
  66         OFGeneralDeserializer deserializer = registry.get(key);
  67         if (deserializer == null) {
  68             throw new NullPointerException("Deserializer for key: " + key.toString()
  69                     + " was not found");
  70         }
  71         return (DESERIALIZER_TYPE) deserializer;
  72     }
  73
  74     @Override
  75     public void registerDeserializer(MessageCodeKey key,
  76             OFGeneralDeserializer deserializer) {
  77         if ((key == null) || (deserializer == null)) {
  78             throw new NullPointerException("MessageCodeKey or Deserializer is null");
  79         }
  80         if (deserializer instanceof DeserializerRegistryInjector) {
  81             ((DeserializerRegistryInjector) deserializer).injectDeserializerRegistry(this);
  82         }
  83         registry.put(key, deserializer);
  84     }
  85
  86 }