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

   1 /*
   2  * Copyright (c) 2015 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 package org.opendaylight.controller.cluster.datastore;
   9
  10 import akka.actor.ActorSelection;
  11 import java.util.Collection;
  12 import java.util.concurrent.atomic.AtomicLong;
  13 import org.opendaylight.controller.cluster.access.concepts.ClientIdentifier;
  14 import org.opendaylight.controller.cluster.access.concepts.LocalHistoryIdentifier;
  15 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
  16 import org.opendaylight.controller.cluster.datastore.messages.PrimaryShardInfo;
  17 import org.opendaylight.controller.cluster.datastore.utils.ActorContext;
  18 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  19 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
  20 import scala.concurrent.Future;
  21
  22 /**
  23  * An {@link AbstractTransactionContextFactory} which produces TransactionContext instances for single
  24  * transactions (ie not chained).
  25  */
  26 final class TransactionContextFactory extends AbstractTransactionContextFactory<LocalTransactionFactoryImpl> {
  27     private final AtomicLong nextHistory = new AtomicLong(1);
  28
  29     TransactionContextFactory(final ActorContext actorContext, final ClientIdentifier clientId) {
  30         super(actorContext, new LocalHistoryIdentifier(clientId, 0));
  31     }
  32
  33     @Override
  34     public void close() {
  35     }
  36
  37     @Override
  38     protected LocalTransactionFactoryImpl factoryForShard(final String shardName, final ActorSelection shardLeader,
  39             final DataTree dataTree) {
  40         return new LocalTransactionFactoryImpl(getActorContext(), shardLeader, dataTree);
  41     }
  42
  43     @Override
  44     protected Future<PrimaryShardInfo> findPrimaryShard(final String shardName, TransactionIdentifier txId) {
  45         return getActorContext().findPrimaryShardAsync(shardName);
  46     }
  47
  48     @Override
  49     protected <T> void onTransactionReady(final TransactionIdentifier transaction,
  50             final Collection<Future<T>> cohortFutures) {
  51         // Transactions are disconnected, this is a no-op
  52     }
  53
  54     DOMStoreTransactionChain createTransactionChain() {
  55         return new TransactionChainProxy(this, new LocalHistoryIdentifier(getHistoryId().getClientId(),
  56                 nextHistory.getAndIncrement()));
  57     }
  58
  59     @Override
  60     protected void onTransactionContextCreated(final TransactionIdentifier transactionId) {
  61     }
  62 }