opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/actors/dds/DirectTransactionCommitCohort.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.actors.dds;
   9
  10 import com.google.common.base.Preconditions;
  11 import com.google.common.util.concurrent.ListenableFuture;
  12 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
  13
  14 /**
  15  * An {@link AbstractTransactionCommitCohort} implementation for transactions which contain a single proxy. Since there
  16  * is only one proxy,
  17  *
  18  * @author Robert Varga
  19  */
  20 final class DirectTransactionCommitCohort extends AbstractTransactionCommitCohort {
  21     private final AbstractProxyTransaction proxy;
  22
  23     DirectTransactionCommitCohort(final AbstractClientHistory parent, final TransactionIdentifier txId,
  24         final AbstractProxyTransaction proxy) {
  25         super(parent, txId);
  26         this.proxy = Preconditions.checkNotNull(proxy);
  27     }
  28
  29     @Override
  30     public ListenableFuture<Boolean> canCommit() {
  31         return proxy.directCommit();
  32     }
  33
  34     @Override
  35     public ListenableFuture<Void> preCommit() {
  36         return VOID_FUTURE;
  37     }
  38
  39     @Override
  40     public ListenableFuture<Void> abort() {
  41         complete();
  42         return VOID_FUTURE;
  43     }
  44
  45     @Override
  46     public ListenableFuture<Void> commit() {
  47         complete();
  48         return VOID_FUTURE;
  49     }
  50 }