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 java.util.concurrent.atomic.AtomicLong;
  15 import javax.annotation.Nonnull;
  16 import org.opendaylight.controller.cluster.databroker.actors.dds.ClientLocalHistory;
  17 import org.opendaylight.controller.cluster.databroker.actors.dds.DataStoreClient;
  18 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  19 import org.opendaylight.mdsal.dom.spi.shard.DOMDataTreeShardProducer;
  20 import org.opendaylight.mdsal.dom.spi.shard.DOMDataTreeShardWriteTransaction;
  21 import org.opendaylight.mdsal.dom.store.inmemory.InMemoryDOMDataTreeShard;
  22 import org.slf4j.Logger;
  23 import org.slf4j.LoggerFactory;
  24
  25 /**
  26  * Proxy producer implementation that creates transactions that forward all calls to {@link DataStoreClient}.
  27  */
  28 class ShardProxyProducer implements DOMDataTreeShardProducer {
  29
  30     private static final Logger LOG = LoggerFactory.getLogger(InMemoryDOMDataTreeShard.class);
  31     private static final AtomicLong COUNTER = new AtomicLong();
  32
  33     private final DOMDataTreeIdentifier shardRoot;
  34     private final Collection<DOMDataTreeIdentifier> prefixes;
  35     private final ClientLocalHistory history;
  36     private DistributedShardModificationFactory modificationFactory;
  37
  38     ShardProxyProducer(final DOMDataTreeIdentifier shardRoot,
  39                        final Collection<DOMDataTreeIdentifier> prefixes,
  40                        final DataStoreClient client,
  41                        final DistributedShardModificationFactory modificationFactory) {
  42         this.shardRoot = Preconditions.checkNotNull(shardRoot);
  43         this.prefixes = ImmutableList.copyOf(Preconditions.checkNotNull(prefixes));
  44         this.modificationFactory = Preconditions.checkNotNull(modificationFactory);
  45         history = Preconditions.checkNotNull(client).createLocalHistory();
  46     }
  47
  48     @Nonnull
  49     @Override
  50     public Collection<DOMDataTreeIdentifier> getPrefixes() {
  51         return prefixes;
  52     }
  53
  54     @Override
  55     public DOMDataTreeShardWriteTransaction createTransaction() {
  56         return new ShardProxyTransaction(shardRoot, prefixes,
  57                 modificationFactory.createModification(history.createTransaction()));
  58     }
  59
  60     DistributedShardModificationFactory getModificationFactory() {
  61         return modificationFactory;
  62     }
  63
  64     void setModificationFactory(final DistributedShardModificationFactory modificationFactory) {
  65         this.modificationFactory = Preconditions.checkNotNull(modificationFactory);
  66     }
  67 }
  68