2 * Copyright (c) 2015 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.controller.cluster.datastore;
10 import com.google.common.base.MoreObjects;
11 import com.google.common.base.Preconditions;
12 import javax.annotation.concurrent.NotThreadSafe;
13 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
16 * Abstract base for transactions running on SharrdDataTree.
18 * @param <T> Backing transaction type.
21 abstract class AbstractShardDataTreeTransaction<T extends DataTreeSnapshot> {
22 private final T snapshot;
23 private final String id;
24 private boolean closed;
26 protected AbstractShardDataTreeTransaction(final String id, final T snapshot) {
27 this.snapshot = Preconditions.checkNotNull(snapshot);
28 this.id = Preconditions.checkNotNull(id);
35 final T getSnapshot() {
39 final boolean isClosed() {
44 * Close this transaction and mark it as closed, allowing idempotent invocations.
46 * @return True if the transaction got closed by this method invocation.
48 protected final boolean close() {
58 public final String toString() {
59 return MoreObjects.toStringHelper(this).add("id", id).add("closed", closed).add("snapshot", snapshot).toString();
62 abstract void abort();