opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/databroker/actors/dds/ClientTransactionCommitCohort.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.collect.ImmutableList;
  11 import com.google.common.util.concurrent.ListenableFuture;
  12 import java.util.Collection;
  13 import java.util.List;
  14
  15 final class ClientTransactionCommitCohort extends AbstractTransactionCommitCohort {
  16     private final List<AbstractProxyTransaction> proxies;
  17
  18     ClientTransactionCommitCohort(final Collection<AbstractProxyTransaction> proxies) {
  19         this.proxies = ImmutableList.copyOf(proxies);
  20     }
  21
  22     @Override
  23     public ListenableFuture<Boolean> canCommit() {
  24         /*
  25          * Issue the request to commit for all participants. We will track the results and report them.
  26          */
  27         final VotingFuture<Boolean> ret = new VotingFuture<>(Boolean.TRUE, proxies.size());
  28         for (AbstractProxyTransaction proxy : proxies) {
  29             proxy.canCommit(ret);
  30         }
  31
  32         return ret;
  33     }
  34
  35     @Override
  36     public ListenableFuture<Void> preCommit() {
  37         final VotingFuture<Void> ret = new VotingFuture<>(null, proxies.size());
  38         for (AbstractProxyTransaction proxy : proxies) {
  39             proxy.preCommit(ret);
  40         }
  41
  42         return ret;
  43     }
  44
  45     @Override
  46     public ListenableFuture<Void> commit() {
  47         final VotingFuture<Void> ret = new VotingFuture<>(null, proxies.size());
  48         for (AbstractProxyTransaction proxy : proxies) {
  49             proxy.doCommit(ret);
  50         }
  51
  52         return ret;
  53     }
  54
  55     @Override
  56     public ListenableFuture<Void> abort() {
  57         final VotingFuture<Void> ret = new VotingFuture<>(null, proxies.size());
  58         for (AbstractProxyTransaction proxy : proxies) {
  59             proxy.abort(ret);
  60         }
  61
  62         return ret;
  63     }
  64 }