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

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. 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.controller.cluster.datastore;
  10
  11 import akka.actor.ActorRef;
  12 import akka.actor.Props;
  13 import akka.japi.Creator;
  14 import org.opendaylight.controller.cluster.datastore.messages.CloseTransactionChain;
  15 import org.opendaylight.controller.cluster.datastore.messages.CloseTransactionChainReply;
  16 import org.opendaylight.controller.cluster.datastore.messages.CreateTransaction;
  17 import org.opendaylight.controller.cluster.datastore.messages.CreateTransactionReply;
  18 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  19 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
  20
  21 /**
  22  * The ShardTransactionChain Actor represents a remote TransactionChain
  23  */
  24 public class ShardTransactionChain extends AbstractUntypedActor {
  25
  26     private final DOMStoreTransactionChain chain;
  27     private final SchemaContext schemaContext;
  28
  29     public ShardTransactionChain(DOMStoreTransactionChain chain, SchemaContext schemaContext) {
  30         this.chain = chain;
  31         this.schemaContext = schemaContext;
  32     }
  33
  34     @Override
  35     public void handleReceive(Object message) throws Exception {
  36         if (message.getClass().equals(CreateTransaction.SERIALIZABLE_CLASS)) {
  37             CreateTransaction createTransaction = CreateTransaction.fromSerializable( message);
  38             createTransaction(createTransaction);
  39         } else if (message.getClass().equals(CloseTransactionChain.SERIALIZABLE_CLASS)) {
  40             chain.close();
  41             getSender().tell(new CloseTransactionChainReply().toSerializable(), getSelf());
  42         }else{
  43             unknownMessage(message);
  44         }
  45     }
  46
  47     private ActorRef getShardActor(){
  48         return getContext().parent();
  49     }
  50
  51   private ActorRef createTypedTransactionActor(CreateTransaction createTransaction,String transactionId){
  52     if(createTransaction.getTransactionType()== TransactionProxy.TransactionType.READ_ONLY.ordinal()){
  53       return getContext().actorOf(
  54           ShardTransaction.props( chain.newReadOnlyTransaction(), getShardActor(), schemaContext), transactionId);
  55
  56     }else if (createTransaction.getTransactionType()== TransactionProxy.TransactionType.READ_WRITE.ordinal()){
  57       return getContext().actorOf(
  58           ShardTransaction.props( chain.newReadWriteTransaction(), getShardActor(), schemaContext), transactionId);
  59
  60
  61     }else if (createTransaction.getTransactionType()== TransactionProxy.TransactionType.WRITE_ONLY.ordinal()){
  62       return getContext().actorOf(
  63           ShardTransaction.props( chain.newWriteOnlyTransaction(), getShardActor(), schemaContext), transactionId);
  64     }else{
  65       throw new IllegalArgumentException ("CreateTransaction message has unidentified transaction type="+createTransaction.getTransactionType()) ;
  66     }
  67   }
  68
  69     private void createTransaction(CreateTransaction createTransaction) {
  70
  71         ActorRef transactionActor = createTypedTransactionActor(createTransaction, "shard-" + createTransaction.getTransactionId());
  72         getSender()
  73             .tell(new CreateTransactionReply(transactionActor.path().toString(),createTransaction.getTransactionId()).toSerializable(),
  74                 getSelf());
  75     }
  76
  77     public static Props props(final DOMStoreTransactionChain chain, final SchemaContext schemaContext) {
  78         return Props.create(new Creator<ShardTransactionChain>() {
  79
  80             @Override
  81             public ShardTransactionChain create() throws Exception {
  82                 return new ShardTransactionChain(chain, schemaContext);
  83             }
  84         });
  85     }
  86 }