2 * Copyright (c) 2017 Brocade Communications 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.controller.clustering.it.provider;
10 import com.google.common.base.Verify;
11 import com.google.common.util.concurrent.FluentFuture;
12 import java.util.Collection;
13 import java.util.Optional;
14 import org.opendaylight.mdsal.common.api.DataValidationFailedException;
15 import org.opendaylight.mdsal.common.api.PostCanCommitStep;
16 import org.opendaylight.mdsal.dom.api.DOMDataTreeCandidate;
17 import org.opendaylight.mdsal.dom.api.DOMDataTreeCommitCohort;
18 import org.opendaylight.mdsal.dom.api.DOMDataTreeIdentifier;
19 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.config.sal.clustering.it.car.rev140818.Cars;
20 import org.opendaylight.yangtools.util.concurrent.FluentFutures;
21 import org.opendaylight.yangtools.yang.common.QName;
22 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.NodeIdentifier;
23 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerChild;
24 import org.opendaylight.yangtools.yang.data.api.schema.DataContainerNode;
25 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
26 import org.opendaylight.yangtools.yang.data.tree.api.DataTreeCandidateNode;
27 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
32 * Example implementation of a DOMDataTreeCommitCohort that validates car entry data.
34 * @author Thomas Pantelis
36 public final class CarEntryDataTreeCommitCohort implements DOMDataTreeCommitCohort {
37 private static final Logger LOG = LoggerFactory.getLogger(CarEntryDataTreeCommitCohort.class);
39 private static final QName YEAR_QNAME = QName.create(Cars.QNAME, "year").intern();
40 private static final NodeIdentifier YEAR_NODE_ID = new NodeIdentifier(YEAR_QNAME);
43 public FluentFuture<PostCanCommitStep> canCommit(final Object txId, final SchemaContext ctx,
44 final Collection<DOMDataTreeCandidate> candidates) {
46 for (DOMDataTreeCandidate candidate : candidates) {
47 // Simple data validation - verify the year, if present, is >= 1990
49 final DataTreeCandidateNode rootNode = candidate.getRootNode();
50 final Optional<NormalizedNode> dataAfter = rootNode.getDataAfter();
52 LOG.info("In canCommit: modificationType: {}, dataBefore: {}, dataAfter: {}",
53 rootNode.getModificationType(), rootNode.getDataBefore(), dataAfter);
55 // Note: we don't want to process DELETE modifications but we don't need to explicitly check the
56 // ModificationType because dataAfter will not be present. Also dataAfter *should* always contain a
57 // MapEntryNode but we verify anyway.
58 if (dataAfter.isPresent()) {
59 final NormalizedNode normalizedNode = dataAfter.orElseThrow();
60 Verify.verify(normalizedNode instanceof DataContainerNode,
61 "Expected type DataContainerNode, actual was %s", normalizedNode.getClass());
62 DataContainerNode entryNode = (DataContainerNode) normalizedNode;
63 final Optional<DataContainerChild> possibleYear = entryNode.findChildByArg(YEAR_NODE_ID);
64 if (possibleYear.isPresent()) {
65 final Number year = (Number) possibleYear.orElseThrow().body();
67 LOG.info("year is {}", year);
69 if (year.longValue() < 1990) {
70 return FluentFutures.immediateFailedFluentFuture(new DataValidationFailedException(
71 DOMDataTreeIdentifier.class, candidate.getRootPath(),
72 String.format("Invalid year %d - year must be >= 1990", year)));
78 // Return the noop PostCanCommitStep as we're only validating input data and not participating in the
79 // remaining 3PC stages (pre-commit and commit).
80 return PostCanCommitStep.NOOP_SUCCESSFUL_FUTURE;