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.ClientLocalHistory;
  16 import org.opendaylight.controller.cluster.databroker.actors.dds.DataStoreClient;
  17 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  18 import org.opendaylight.mdsal.dom.spi.shard.DOMDataTreeShardProducer;
  19 import org.opendaylight.mdsal.dom.spi.shard.DOMDataTreeShardWriteTransaction;
  20
  21 /**
  22  * Proxy producer implementation that creates transactions that forward all calls to {@link DataStoreClient}.
  23  */
  24 class ShardProxyProducer implements DOMDataTreeShardProducer {
  25     private final DOMDataTreeIdentifier shardRoot;
  26     private final Collection<DOMDataTreeIdentifier> prefixes;
  27     private final ClientLocalHistory history;
  28     private DistributedShardModificationFactory modificationFactory;
  29
  30     ShardProxyProducer(final DOMDataTreeIdentifier shardRoot,
  31                        final Collection<DOMDataTreeIdentifier> prefixes,
  32                        final DataStoreClient client,
  33                        final DistributedShardModificationFactory modificationFactory) {
  34         this.shardRoot = Preconditions.checkNotNull(shardRoot);
  35         this.prefixes = ImmutableList.copyOf(Preconditions.checkNotNull(prefixes));
  36         this.modificationFactory = Preconditions.checkNotNull(modificationFactory);
  37         history = Preconditions.checkNotNull(client).createLocalHistory();
  38     }
  39
  40     @Nonnull
  41     @Override
  42     public Collection<DOMDataTreeIdentifier> getPrefixes() {
  43         return prefixes;
  44     }
  45
  46     @Override
  47     public DOMDataTreeShardWriteTransaction createTransaction() {
  48         return new ShardProxyTransaction(shardRoot, prefixes,
  49                 modificationFactory.createModification(history.createTransaction()));
  50     }
  51
  52     DistributedShardModificationFactory getModificationFactory() {
  53         return modificationFactory;
  54     }
  55
  56     void setModificationFactory(final DistributedShardModificationFactory modificationFactory) {
  57         this.modificationFactory = Preconditions.checkNotNull(modificationFactory);
  58     }
  59 }
  60