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
9 package org.opendaylight.controller.md.sal.dom.broker.impl;
11 import com.google.common.base.Preconditions;
12 import com.google.common.base.Supplier;
13 import com.google.common.util.concurrent.Futures;
14 import com.google.common.util.concurrent.ListenableFuture;
15 import com.google.common.util.concurrent.ListeningExecutorService;
16 import java.util.Collection;
18 import java.util.concurrent.RejectedExecutionException;
19 import org.opendaylight.controller.md.sal.common.api.data.LogicalDatastoreType;
20 import org.opendaylight.controller.md.sal.common.api.data.TransactionCommitFailedException;
21 import org.opendaylight.controller.md.sal.dom.api.DOMDataWriteTransaction;
22 import org.opendaylight.controller.sal.core.spi.data.DOMStore;
23 import org.opendaylight.controller.sal.core.spi.data.DOMStoreThreePhaseCommitCohort;
24 import org.opendaylight.yangtools.util.DurationStatisticsTracker;
25 import org.slf4j.Logger;
26 import org.slf4j.LoggerFactory;
29 * Implementation of blocking three phase commit coordinator, which which
30 * supports coordination on multiple {@link DOMStoreThreePhaseCommitCohort}.
33 * This implementation does not support cancellation of commit,
36 * In order to advance to next phase of three phase commit all subtasks of
37 * previous step must be finish.
40 * This executor does not have an upper bound on subtask timeout.
43 public class SerializedDOMDataBroker extends AbstractDOMDataBroker {
44 private static final Logger LOG = LoggerFactory.getLogger(SerializedDOMDataBroker.class);
45 private final DurationStatisticsTracker commitStatsTracker = DurationStatisticsTracker.createConcurrent();
46 private final ListeningExecutorService executor;
49 * Construct DOMDataCommitCoordinator which uses supplied executor to
50 * process commit coordinations.
52 * @param datastores data stores
53 * @param executor executor service
55 public SerializedDOMDataBroker(final Map<LogicalDatastoreType, DOMStore> datastores,
56 final ListeningExecutorService executor) {
58 this.executor = Preconditions.checkNotNull(executor, "executor must not be null.");
61 public DurationStatisticsTracker getCommitStatsTracker() {
62 return commitStatsTracker;
66 protected <T> ListenableFuture<T> commit(final DOMDataWriteTransaction transaction,
67 final Collection<DOMStoreThreePhaseCommitCohort> cohorts, final Supplier<T> futureValueSupplier) {
68 Preconditions.checkArgument(transaction != null, "Transaction must not be null.");
69 Preconditions.checkArgument(cohorts != null, "Cohorts must not be null.");
70 LOG.debug("Tx: {} is submitted for execution.", transaction.getIdentifier());
72 ListenableFuture<T> commitFuture;
74 commitFuture = executor.submit(new CommitCoordinationTask<>(transaction, cohorts, commitStatsTracker,
75 futureValueSupplier));
76 } catch (RejectedExecutionException e) {
77 LOG.error("The commit executor {} queue is full - submit task was rejected. \n", executor, e);
78 commitFuture = Futures.immediateFailedFuture(new TransactionCommitFailedException(
79 "Could not submit the commit task - the commit queue capacity has been exceeded.", e));