opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/sharding/ShardProxyProducer.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.sharding;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.collect.ImmutableList;
  13 import java.util.Collection;
  14 import org.opendaylight.controller.cluster.databroker.actors.dds.ClientLocalHistory;
  15 import org.opendaylight.controller.cluster.databroker.actors.dds.DataStoreClient;
  16 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  17 import org.opendaylight.mdsal.dom.spi.shard.DOMDataTreeShardProducer;
  18 import org.opendaylight.mdsal.dom.spi.shard.DOMDataTreeShardWriteTransaction;
  19
  20 /**
  21  * Proxy producer implementation that creates transactions that forward all calls to {@link DataStoreClient}.
  22  */
  23 class ShardProxyProducer implements DOMDataTreeShardProducer {
  24     private final DOMDataTreeIdentifier shardRoot;
  25     private final Collection<DOMDataTreeIdentifier> prefixes;
  26     private final ClientLocalHistory history;
  27     private DistributedShardModificationFactory modificationFactory;
  28
  29     ShardProxyProducer(final DOMDataTreeIdentifier shardRoot,
  30                        final Collection<DOMDataTreeIdentifier> prefixes,
  31                        final DataStoreClient client,
  32                        final DistributedShardModificationFactory modificationFactory) {
  33         this.shardRoot = requireNonNull(shardRoot);
  34         this.prefixes = ImmutableList.copyOf(prefixes);
  35         this.modificationFactory = requireNonNull(modificationFactory);
  36         history = requireNonNull(client).createLocalHistory();
  37     }
  38
  39     @Override
  40     public Collection<DOMDataTreeIdentifier> getPrefixes() {
  41         return prefixes;
  42     }
  43
  44     @Override
  45     public DOMDataTreeShardWriteTransaction createTransaction() {
  46         return new ShardProxyTransaction(shardRoot, prefixes,
  47                 modificationFactory.createModification(history.createTransaction()));
  48     }
  49
  50     DistributedShardModificationFactory getModificationFactory() {
  51         return modificationFactory;
  52     }
  53
  54     void setModificationFactory(final DistributedShardModificationFactory modificationFactory) {
  55         this.modificationFactory = requireNonNull(modificationFactory);
  56     }
  57 }