dom/mdsal-dom-inmemory-datastore/src/main/java/org/opendaylight/mdsal/dom/store/inmemory/ShardSubmitCoordinationTask.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.mdsal.dom.store.inmemory;
  10
  11 import com.google.common.annotations.Beta;
  12 import com.google.common.base.Preconditions;
  13 import java.util.Collection;
  14 import java.util.concurrent.Callable;
  15 import org.opendaylight.mdsal.common.api.TransactionCommitFailedException;
  16 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  17 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
  18 import org.slf4j.Logger;
  19 import org.slf4j.LoggerFactory;
  20
  21 /**
  22  * Task that coordinates all phases of transaction submit from the provided {@link DOMStoreThreePhaseCommitCohort}'s.
  23  * Each phase will only be started once all cohorts have finished the previous phase.
  24  */
  25 @Beta
  26 public class ShardSubmitCoordinationTask implements Callable<Void> {
  27
  28     private static final Logger LOG = LoggerFactory.getLogger(ShardSubmitCoordinationTask.class);
  29
  30     private final DOMDataTreeIdentifier rootShardPrefix;
  31     private final ShardCanCommitCoordinationTask canCommitCoordinationTask;
  32     private final ShardPreCommitCoordinationTask preCommitCoordinationTask;
  33     private final ShardCommitCoordinationTask commitCoordinationTask;
  34     private final InmemoryDOMDataTreeShardWriteTransaction transaction;
  35
  36
  37     public ShardSubmitCoordinationTask(final DOMDataTreeIdentifier rootShardPrefix,
  38                                        final Collection<DOMStoreThreePhaseCommitCohort> cohorts,
  39                                        final InmemoryDOMDataTreeShardWriteTransaction transaction) {
  40         this.rootShardPrefix = Preconditions.checkNotNull(rootShardPrefix);
  41         this.transaction = transaction;
  42
  43         canCommitCoordinationTask = new ShardCanCommitCoordinationTask(rootShardPrefix, cohorts);
  44         preCommitCoordinationTask = new ShardPreCommitCoordinationTask(rootShardPrefix, cohorts);
  45         commitCoordinationTask = new ShardCommitCoordinationTask(rootShardPrefix, cohorts, transaction);
  46     }
  47
  48     @Override
  49     public Void call() throws TransactionCommitFailedException {
  50
  51         LOG.debug("Shard {}, tx{} CanCommit started", transaction.getIdentifier(), rootShardPrefix);
  52         canCommitCoordinationTask.canCommitBlocking();
  53
  54         LOG.debug("Shard {}, tx{} PreCommit started", transaction.getIdentifier(), rootShardPrefix);
  55         preCommitCoordinationTask.preCommitBlocking();
  56
  57         LOG.debug("Shard {}, tx{} commit started", transaction.getIdentifier(), rootShardPrefix);
  58         commitCoordinationTask.commitBlocking();
  59
  60         transaction.transactionCommited(transaction);
  61
  62         return null;
  63     }
  64 }