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         if(WriteData.SERIALIZABLE_CLASS.equals(message.getClass())) {
  57             writeData(transaction, WriteData.fromSerializable(message, getSchemaContext()));
  58         } else if(MergeData.SERIALIZABLE_CLASS.equals(message.getClass())) {
  59             mergeData(transaction, MergeData.fromSerializable(message, getSchemaContext()));
  60         } else if(DeleteData.SERIALIZABLE_CLASS.equals(message.getClass())) {
  61             deleteData(transaction, DeleteData.fromSerializable(message));
  62         } else if(ReadyTransaction.SERIALIZABLE_CLASS.equals(message.getClass())) {
  63             readyTransaction(transaction, new ReadyTransaction());
  64         } else if (message instanceof GetCompositedModification) {
  65             // This is here for testing only
  66             getSender().tell(new GetCompositeModificationReply(
  67                     new ImmutableCompositeModification(modification)), getSelf());
  68         } else {
  69             super.handleReceive(message);
  70         }
  71     }
  72
  73     private void writeData(DOMStoreWriteTransaction transaction, WriteData message) {
  74         modification.addModification(
  75                 new WriteModification(message.getPath(), message.getData(), getSchemaContext()));
  76         if(LOG.isDebugEnabled()) {
  77             LOG.debug("writeData at path : " + message.getPath().toString());
  78         }
  79         try {
  80             transaction.write(message.getPath(), message.getData());
  81             getSender().tell(new WriteDataReply().toSerializable(), getSelf());
  82         }catch(Exception e){
  83             getSender().tell(new akka.actor.Status.Failure(e), getSelf());
  84         }
  85     }
  86
  87     private void mergeData(DOMStoreWriteTransaction transaction, MergeData message) {
  88         modification.addModification(
  89                 new MergeModification(message.getPath(), message.getData(), getSchemaContext()));
  90         if(LOG.isDebugEnabled()) {
  91             LOG.debug("mergeData at path : " + message.getPath().toString());
  92         }
  93         try {
  94             transaction.merge(message.getPath(), message.getData());
  95             getSender().tell(new MergeDataReply().toSerializable(), getSelf());
  96         }catch(Exception e){
  97             getSender().tell(new akka.actor.Status.Failure(e), getSelf());
  98         }
  99     }
 100
 101     private void deleteData(DOMStoreWriteTransaction transaction, DeleteData message) {
 102         if(LOG.isDebugEnabled()) {
 103             LOG.debug("deleteData at path : " + message.getPath().toString());
 104         }
 105         modification.addModification(new DeleteModification(message.getPath()));
 106         try {
 107             transaction.delete(message.getPath());
 108             getSender().tell(new DeleteDataReply().toSerializable(), getSelf());
 109         }catch(Exception e){
 110             getSender().tell(new akka.actor.Status.Failure(e), getSelf());
 111         }
 112     }
 113
 114     private void readyTransaction(DOMStoreWriteTransaction transaction, ReadyTransaction message) {
 115         DOMStoreThreePhaseCommitCohort cohort =  transaction.ready();
 116
 117         getShardActor().forward(new ForwardedReadyTransaction(getTransactionID(), cohort, modification),
 118                 getContext());
 119     }
 120
 121     // These classes are in here for test purposes only
 122
 123     static class GetCompositedModification {
 124     }
 125
 126     static class GetCompositeModificationReply {
 127         private final CompositeModification modification;
 128
 129
 130         GetCompositeModificationReply(CompositeModification modification) {
 131             this.modification = modification;
 132         }
 133
 134         public CompositeModification getModification() {
 135             return modification;
 136         }
 137     }
 138 }