2 * Copyright (c) 2014 Cisco Systems, Inc. and others. All rights reserved.
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
8 package org.opendaylight.mdsal.dom.broker;
10 import static java.util.Objects.requireNonNull;
12 import com.google.common.util.concurrent.FluentFuture;
13 import com.google.common.util.concurrent.Futures;
14 import com.google.common.util.concurrent.ListenableFuture;
16 import java.util.concurrent.Executor;
17 import java.util.concurrent.RejectedExecutionException;
18 import org.opendaylight.mdsal.common.api.CommitInfo;
19 import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
20 import org.opendaylight.mdsal.common.api.TransactionCommitFailedException;
21 import org.opendaylight.mdsal.dom.api.DOMDataTreeWriteTransaction;
22 import org.opendaylight.mdsal.dom.broker.CommitCoordinationTask.WithTracker;
23 import org.opendaylight.mdsal.dom.spi.store.DOMStore;
24 import org.opendaylight.mdsal.dom.spi.store.DOMStoreThreePhaseCommitCohort;
25 import org.opendaylight.yangtools.util.DurationStatisticsTracker;
26 import org.opendaylight.yangtools.util.concurrent.FluentFutures;
27 import org.slf4j.Logger;
28 import org.slf4j.LoggerFactory;
31 * Implementation of blocking three phase commit coordinator, which which supports coordination on multiple
32 * {@link DOMStoreThreePhaseCommitCohort}. This implementation does not support cancellation of commit.
35 * In order to advance to next phase of three phase commit all subtasks of previous step must be finish.
38 * This executor does not have an upper bound on subtask timeout.
40 public final class SerializedDOMDataBroker extends AbstractDOMDataBroker {
41 private static final Logger LOG = LoggerFactory.getLogger(SerializedDOMDataBroker.class);
43 private final DurationStatisticsTracker commitStatsTracker = DurationStatisticsTracker.createConcurrent();
44 private final Executor executor;
47 * Construct DOMDataCommitCoordinator which uses supplied executor to
48 * process commit coordinations.
50 * @param datastores the Map of backing DOMStore instances
51 * @param executor the Executor to use
53 public SerializedDOMDataBroker(final Map<LogicalDatastoreType, DOMStore> datastores, final Executor executor) {
55 this.executor = requireNonNull(executor, "executor must not be null.");
58 public DurationStatisticsTracker getCommitStatsTracker() {
59 return commitStatsTracker;
63 protected FluentFuture<CommitInfo> commit(final DOMDataTreeWriteTransaction transaction,
64 final DOMStoreThreePhaseCommitCohort cohort) {
65 LOG.debug("Tx: {} is submitted for execution.", transaction.getIdentifier());
67 final ListenableFuture<CommitInfo> future;
69 // FIXME: use FluentFutures.submit() once it is available
70 future = Futures.submit(new WithTracker(transaction, cohort, commitStatsTracker), executor);
71 } catch (RejectedExecutionException e) {
72 LOG.error("The commit executor's queue is full - submit task was rejected. \n{}", executor, e);
73 return FluentFutures.immediateFailedFluentFuture(new TransactionCommitFailedException(
74 "Could not submit the commit task - the commit queue capacity has been exceeded.", e));
77 return FluentFuture.from(future);