opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/ShardedDOMStoreTransactionChain.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;
   9
  10 import com.google.common.base.Preconditions;
  11 import org.opendaylight.controller.cluster.databroker.actors.dds.ClientLocalHistory;
  12 import org.opendaylight.controller.cluster.databroker.actors.dds.ClientTransaction;
  13 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadTransaction;
  14 import org.opendaylight.controller.sal.core.spi.data.DOMStoreReadWriteTransaction;
  15 import org.opendaylight.controller.sal.core.spi.data.DOMStoreTransactionChain;
  16 import org.opendaylight.controller.sal.core.spi.data.DOMStoreWriteTransaction;
  17
  18 /**
  19  * Implementation of {@link DOMStoreTransactionChain} backed by a {@link ClientLocalHistory}. It wraps
  20  * {@link ClientTransaction} into proxies like {@link ShardedDOMStoreReadTransaction} to provide isolation.
  21  *
  22  * @author Robert Varga
  23  */
  24 final class ShardedDOMStoreTransactionChain implements DOMStoreTransactionChain {
  25     private final ClientLocalHistory history;
  26
  27     ShardedDOMStoreTransactionChain(final ClientLocalHistory history) {
  28         this.history = Preconditions.checkNotNull(history);
  29     }
  30
  31     @Override
  32     public DOMStoreReadTransaction newReadOnlyTransaction() {
  33         return new ShardedDOMStoreReadTransaction(history.createTransaction());
  34     }
  35
  36     @Override
  37     public DOMStoreReadWriteTransaction newReadWriteTransaction() {
  38         return new ShardedDOMStoreReadWriteTransaction(history.createTransaction());
  39     }
  40
  41     @Override
  42     public DOMStoreWriteTransaction newWriteOnlyTransaction() {
  43         return new ShardedDOMStoreWriteTransaction(history.createTransaction());
  44     }
  45
  46     @Override
  47     public void close() {
  48         history.close();
  49     }
  50 }