opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardWriteTransaction.java

   1 /*
   2  *
   3  *  Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   4  *
   5  *  This program and the accompanying materials are made available under the
   6  *  terms of the Eclipse Public License v1.0 which accompanies this distribution,
   7  *  and is available at http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  */
  10
  11 package org.opendaylight.controller.cluster.datastore;
  12
  13 import akka.actor.ActorRef;
  14 import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
  15 import org.opendaylight.controller.cluster.datastore.messages.DeleteData;
  16 import org.opendaylight.controller.cluster.datastore.messages.DeleteDataReply;
  17 import org.opendaylight.controller.cluster.datastore.messages.ForwardedReadyTransaction;
  18 import org.opendaylight.controller.cluster.datastore.messages.MergeData;
  19 import org.opendaylight.controller.cluster.datastore.messages.MergeDataReply;
  20 import org.opendaylight.controller.cluster.datastore.messages.ReadyTransaction;
  21 import org.opendaylight.controller.cluster.datastore.messages.WriteData;
  22 import org.opendaylight.controller.cluster.datastore.messages.WriteDataReply;
  23 import org.opendaylight.controller.cluster.datastore.modification.CompositeModification;
  24 import org.opendaylight.controller.cluster.datastore.modification.DeleteModification;
  25 import org.opendaylight.controller.cluster.datastore.modification.ImmutableCompositeModification;
  26 import org.opendaylight.controller.cluster.datastore.modification.MergeModification;
  27 import org.opendaylight.controller.cluster.datastore.modification.MutableCompositeModification;
  28 import org.opendaylight.controller.cluster.datastore.modification.WriteModification;
  29 import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
  30 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransaction;
  31 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
  32 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  33
  34 /**
  35  * @author: syedbahm
  36  * Date: 8/6/14
  37  */
  38 public class ShardWriteTransaction extends ShardTransaction {
  39
  40     private final MutableCompositeModification modification = new MutableCompositeModification();
  41     private final DOMStoreWriteTransaction transaction;
  42
  43     public ShardWriteTransaction(DOMStoreWriteTransaction transaction, ActorRef shardActor,
  44             SchemaContext schemaContext, ShardStats shardStats, String transactionID) {
  45         super(shardActor, schemaContext, shardStats, transactionID);
  46         this.transaction = transaction;
  47     }
  48
  49     @Override
  50     protected DOMStoreTransaction getDOMStoreTransaction() {
  51         return transaction;
  52     }
  53
  54     @Override
  55     public void handleReceive(Object message) throws Exception {
  56
  57         if (message instanceof WriteData) {
  58             writeData(transaction, (WriteData) message, !SERIALIZED_REPLY);
  59
  60         } else if (message instanceof MergeData) {
  61             mergeData(transaction, (MergeData) message, !SERIALIZED_REPLY);
  62
  63         } else if (message instanceof DeleteData) {
  64             deleteData(transaction, (DeleteData) message, !SERIALIZED_REPLY);
  65
  66         } else if (message instanceof ReadyTransaction) {
  67             readyTransaction(transaction, new ReadyTransaction(), !SERIALIZED_REPLY);
  68
  69         } else if(WriteData.SERIALIZABLE_CLASS.equals(message.getClass())) {
  70             writeData(transaction, WriteData.fromSerializable(message, getSchemaContext()), SERIALIZED_REPLY);
  71
  72         } else if(MergeData.SERIALIZABLE_CLASS.equals(message.getClass())) {
  73             mergeData(transaction, MergeData.fromSerializable(message, getSchemaContext()), SERIALIZED_REPLY);
  74
  75         } else if(DeleteData.SERIALIZABLE_CLASS.equals(message.getClass())) {
  76             deleteData(transaction, DeleteData.fromSerializable(message), SERIALIZED_REPLY);
  77
  78         } else if(ReadyTransaction.SERIALIZABLE_CLASS.equals(message.getClass())) {
  79             readyTransaction(transaction, new ReadyTransaction(), SERIALIZED_REPLY);
  80
  81         } else if (message instanceof GetCompositedModification) {
  82             // This is here for testing only
  83             getSender().tell(new GetCompositeModificationReply(
  84                     new ImmutableCompositeModification(modification)), getSelf());
  85         } else {
  86             super.handleReceive(message);
  87         }
  88     }
  89
  90     private void writeData(DOMStoreWriteTransaction transaction, WriteData message, boolean returnSerialized) {
  91         modification.addModification(
  92                 new WriteModification(message.getPath(), message.getData(), getSchemaContext()));
  93         if(LOG.isDebugEnabled()) {
  94             LOG.debug("writeData at path : " + message.getPath().toString());
  95         }
  96         try {
  97             transaction.write(message.getPath(), message.getData());
  98             WriteDataReply writeDataReply = new WriteDataReply();
  99             getSender().tell(returnSerialized ? writeDataReply.toSerializable() : writeDataReply,
 100                 getSelf());
 101         }catch(Exception e){
 102             getSender().tell(new akka.actor.Status.Failure(e), getSelf());
 103         }
 104     }
 105
 106     private void mergeData(DOMStoreWriteTransaction transaction, MergeData message, boolean returnSerialized) {
 107         modification.addModification(
 108                 new MergeModification(message.getPath(), message.getData(), getSchemaContext()));
 109         if(LOG.isDebugEnabled()) {
 110             LOG.debug("mergeData at path : " + message.getPath().toString());
 111         }
 112         try {
 113             transaction.merge(message.getPath(), message.getData());
 114             MergeDataReply mergeDataReply = new MergeDataReply();
 115             getSender().tell(returnSerialized ? mergeDataReply.toSerializable() : mergeDataReply ,
 116                 getSelf());
 117         }catch(Exception e){
 118             getSender().tell(new akka.actor.Status.Failure(e), getSelf());
 119         }
 120     }
 121
 122     private void deleteData(DOMStoreWriteTransaction transaction, DeleteData message, boolean returnSerialized) {
 123         if(LOG.isDebugEnabled()) {
 124             LOG.debug("deleteData at path : " + message.getPath().toString());
 125         }
 126         modification.addModification(new DeleteModification(message.getPath()));
 127         try {
 128             transaction.delete(message.getPath());
 129             DeleteDataReply deleteDataReply = new DeleteDataReply();
 130             getSender().tell(returnSerialized ? deleteDataReply.toSerializable() : deleteDataReply,
 131                 getSelf());
 132         }catch(Exception e){
 133             getSender().tell(new akka.actor.Status.Failure(e), getSelf());
 134         }
 135     }
 136
 137     private void readyTransaction(DOMStoreWriteTransaction transaction, ReadyTransaction message, boolean returnSerialized) {
 138         DOMStoreThreePhaseCommitCohort cohort =  transaction.ready();
 139
 140         getShardActor().forward(new ForwardedReadyTransaction(
 141             getTransactionID(), cohort, modification, returnSerialized),
 142                 getContext());
 143     }
 144
 145     // These classes are in here for test purposes only
 146
 147     static class GetCompositedModification {
 148     }
 149
 150     static class GetCompositeModificationReply {
 151         private final CompositeModification modification;
 152
 153
 154         GetCompositeModificationReply(CompositeModification modification) {
 155             this.modification = modification;
 156         }
 157
 158         public CompositeModification getModification() {
 159             return modification;
 160         }
 161     }
 162 }