opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/sharding/DistributedShardModificationContext.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 org.opendaylight.controller.cluster.databroker.actors.dds.ClientTransaction;
  12 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  13 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteCursor;
  14 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
  15
  16 /**
  17  * The context for a single shards modification, keeps a ClientTransaction so it can route requests correctly.
  18  */
  19 @Deprecated(forRemoval = true)
  20 public class DistributedShardModificationContext {
  21
  22     private final ClientTransaction transaction;
  23     private final DOMDataTreeIdentifier identifier;
  24     private DOMDataTreeWriteCursor cursor;
  25
  26     public DistributedShardModificationContext(final ClientTransaction transaction,
  27                                                final DOMDataTreeIdentifier identifier) {
  28         this.transaction = transaction;
  29         this.identifier = identifier;
  30     }
  31
  32     public DOMDataTreeIdentifier getIdentifier() {
  33         return identifier;
  34     }
  35
  36     DOMDataTreeWriteCursor cursor() {
  37         if (cursor == null) {
  38             cursor = transaction.openCursor();
  39         }
  40
  41         return cursor;
  42     }
  43
  44     DOMStoreThreePhaseCommitCohort ready() {
  45         if (cursor != null) {
  46             cursor.close();
  47             cursor = null;
  48         }
  49
  50         return transaction.ready();
  51     }
  52
  53     void closeCursor() {
  54         if (cursor != null) {
  55             cursor.close();
  56             cursor = null;
  57         }
  58     }
  59
  60 }