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
   9 package org.opendaylight.controller.cluster.sharding;
  10
  11 import com.google.common.base.Preconditions;
  12 import com.google.common.collect.ImmutableList;
  13 import java.util.Collection;
  14 import javax.annotation.Nonnull;
  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
  25     private final DOMDataTreeIdentifier shardRoot;
  26     private final Collection<DOMDataTreeIdentifier> prefixes;
  27     private final DataStoreClient client;
  28
  29     ShardProxyProducer(final DOMDataTreeIdentifier shardRoot, final Collection<DOMDataTreeIdentifier> prefixes,
  30                        final DataStoreClient client) {
  31         this.shardRoot = Preconditions.checkNotNull(shardRoot);
  32         this.prefixes = ImmutableList.copyOf(Preconditions.checkNotNull(prefixes));
  33         this.client = Preconditions.checkNotNull(client);
  34     }
  35
  36     @Nonnull
  37     @Override
  38     public Collection<DOMDataTreeIdentifier> getPrefixes() {
  39         return prefixes;
  40     }
  41
  42     @Override
  43     public DOMDataTreeShardWriteTransaction createTransaction() {
  44         return new ShardProxyTransaction(shardRoot, prefixes, client);
  45     }
  46 }
  47