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 static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
  14 import org.opendaylight.mdsal.common.api.CommitInfo;
  15 import org.opendaylight.yangtools.yang.common.Empty;
  16
  17 /**
  18  * An {@link AbstractTransactionCommitCohort} implementation for transactions which contain a single proxy. Since there
  19  * is only one proxy,
  20  *
  21  * @author Robert Varga
  22  */
  23 final class DirectTransactionCommitCohort extends AbstractTransactionCommitCohort {
  24     private final AbstractProxyTransaction proxy;
  25
  26     DirectTransactionCommitCohort(final AbstractClientHistory parent, final TransactionIdentifier txId,
  27         final AbstractProxyTransaction proxy) {
  28         super(parent, txId);
  29         this.proxy = requireNonNull(proxy);
  30     }
  31
  32     @Override
  33     public ListenableFuture<Boolean> canCommit() {
  34         return proxy.directCommit();
  35     }
  36
  37     @Override
  38     public ListenableFuture<Empty> preCommit() {
  39         return EMPTY_FUTURE;
  40     }
  41
  42     @Override
  43     public ListenableFuture<Empty> abort() {
  44         complete();
  45         return EMPTY_FUTURE;
  46     }
  47
  48     @Override
  49     public ListenableFuture<CommitInfo> commit() {
  50         complete();
  51         return CommitInfo.emptyFluentFuture();
  52     }
  53 }