opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/actors/dds/AbstractProxyHistory.java

   1 /*
   2  * Copyright (c) 2016 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.databroker.actors.dds;
   9
  10 import akka.actor.ActorRef;
  11 import com.google.common.base.Preconditions;
  12 import java.util.Optional;
  13 import org.opendaylight.controller.cluster.access.concepts.LocalHistoryIdentifier;
  14 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
  15 import org.opendaylight.yangtools.concepts.Identifiable;
  16 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTree;
  17
  18 /**
  19  * Per-connection representation of a local history.
  20  *
  21  * @author Robert Varga
  22  */
  23 abstract class AbstractProxyHistory implements Identifiable<LocalHistoryIdentifier> {
  24     // FIXME: this should really be ClientConnection
  25     private final DistributedDataStoreClientBehavior client;
  26     private final LocalHistoryIdentifier identifier;
  27
  28     AbstractProxyHistory(final DistributedDataStoreClientBehavior client, final LocalHistoryIdentifier identifier) {
  29         this.client = Preconditions.checkNotNull(client);
  30         this.identifier = Preconditions.checkNotNull(identifier);
  31     }
  32
  33     static AbstractProxyHistory create(final DistributedDataStoreClientBehavior client,
  34             final Optional<ShardBackendInfo> backendInfo, final LocalHistoryIdentifier identifier) {
  35         final Optional<DataTree> dataTree = backendInfo.flatMap(ShardBackendInfo::getDataTree);
  36         return dataTree.isPresent() ? new LocalProxyHistory(client, identifier, dataTree.get()) : new RemoteProxyHistory(client, identifier);
  37     }
  38
  39     @Override
  40     public LocalHistoryIdentifier getIdentifier() {
  41         return identifier;
  42     }
  43
  44     final ActorRef localActor() {
  45         return client.self();
  46     }
  47
  48     final AbstractProxyTransaction createTransactionProxy(final TransactionIdentifier txId) {
  49         return doCreateTransactionProxy(client, new TransactionIdentifier(identifier, txId.getTransactionId()));
  50     }
  51
  52     abstract AbstractProxyTransaction doCreateTransactionProxy(DistributedDataStoreClientBehavior client,
  53             TransactionIdentifier txId);
  54 }