dom/mdsal-dom-inmemory-datastore/src/main/java/org/opendaylight/mdsal/dom/store/inmemory/ShardPreCommitCoordinationTask.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
  10 package org.opendaylight.mdsal.dom.store.inmemory;
  11
  12 import com.google.common.util.concurrent.ListenableFuture;
  13 import java.util.Collection;
  14 import java.util.concurrent.Callable;
  15 import java.util.concurrent.ExecutionException;
  16 import org.opendaylight.mdsal.common.api.TransactionCommitFailedException;
  17 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
  18 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
  19 import org.slf4j.Logger;
  20 import org.slf4j.LoggerFactory;
  21
  22 class ShardPreCommitCoordinationTask implements Callable<Void>{
  23
  24     private static final Logger LOG = LoggerFactory.getLogger(ShardPreCommitCoordinationTask.class);
  25
  26     private final DOMDataTreeIdentifier rootShardPrefix;
  27     private final Collection<DOMStoreThreePhaseCommitCohort> cohorts;
  28
  29     ShardPreCommitCoordinationTask(final DOMDataTreeIdentifier rootShardPrefix,
  30                                        final Collection<DOMStoreThreePhaseCommitCohort> cohorts) {
  31         this.rootShardPrefix = rootShardPrefix;
  32         this.cohorts = cohorts;
  33     }
  34
  35     @Override
  36     public Void call() throws TransactionCommitFailedException {
  37
  38         try {
  39             LOG.debug("Shard {}, preCommit started", rootShardPrefix);
  40             preCommitBlocking();
  41
  42             return null;
  43         } catch (TransactionCommitFailedException e) {
  44             LOG.warn("Shard: {} Submit Error during phase {}, starting Abort", rootShardPrefix, e);
  45             //FIXME abort here
  46             throw e;
  47         }
  48     }
  49
  50     void preCommitBlocking() throws TransactionCommitFailedException {
  51         for (final ListenableFuture<?> preCommit : preCommitAll()) {
  52             try {
  53                 preCommit.get();
  54             } catch (InterruptedException | ExecutionException e) {
  55                 throw new TransactionCommitFailedException("PreCommit failed", e);
  56             }
  57         }
  58     }
  59
  60     private ListenableFuture<?>[] preCommitAll() {
  61         final ListenableFuture<?>[] ops = new ListenableFuture<?>[cohorts.size()];
  62         int i = 0;
  63         for (final DOMStoreThreePhaseCommitCohort cohort : cohorts) {
  64             ops[i++] = cohort.preCommit();
  65         }
  66         return ops;
  67     }
  68
  69 }