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.DOMStoreReadWriteTransaction;
  19 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  20
  21 /**
  22  * The ShardTransactionChain Actor represents a remote TransactionChain
  23  */
  24 public class ShardTransactionChain extends AbstractUntypedActor {
  25
  26     private final DOMStoreTransactionChain chain;
  27
  28     public ShardTransactionChain(DOMStoreTransactionChain chain) {
  29         this.chain = chain;
  30     }
  31
  32     @Override
  33     public void handleReceive(Object message) throws Exception {
  34         if (message instanceof CreateTransaction) {
  35             CreateTransaction createTransaction = (CreateTransaction) message;
  36             createTransaction(createTransaction);
  37         } else if (message instanceof CloseTransactionChain) {
  38             chain.close();
  39             getSender().tell(new CloseTransactionChainReply(), getSelf());
  40         }
  41     }
  42
  43     private void createTransaction(CreateTransaction createTransaction) {
  44         DOMStoreReadWriteTransaction transaction =
  45             chain.newReadWriteTransaction();
  46         ActorRef transactionActor = getContext().actorOf(ShardTransaction
  47             .props(chain, transaction, getContext().parent()), "shard-" + createTransaction.getTransactionId());
  48         getSender()
  49             .tell(new CreateTransactionReply(transactionActor.path(), createTransaction.getTransactionId()),
  50                 getSelf());
  51     }
  52
  53     public static Props props(final DOMStoreTransactionChain chain) {
  54         return Props.create(new Creator<ShardTransactionChain>() {
  55
  56             @Override
  57             public ShardTransactionChain create() throws Exception {
  58                 return new ShardTransactionChain(chain);
  59             }
  60         });
  61     }
  62 }