2 * Copyright (c) 2015 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.controller.cluster.datastore.utils;
10 import static org.junit.Assert.assertEquals;
11 import static org.junit.Assert.assertFalse;
12 import static org.junit.Assert.fail;
14 import com.google.common.util.concurrent.Uninterruptibles;
15 import java.util.ArrayList;
16 import java.util.Arrays;
17 import java.util.Collection;
18 import java.util.HashSet;
19 import java.util.List;
20 import java.util.Optional;
22 import java.util.concurrent.CountDownLatch;
23 import java.util.concurrent.TimeUnit;
24 import javax.annotation.Nonnull;
25 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
26 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
27 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier.PathArgument;
28 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
29 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNodeContainer;
30 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
32 public class MockDataTreeChangeListener implements DOMDataTreeChangeListener {
34 private final List<DataTreeCandidate> changeList = new ArrayList<>();
36 private volatile CountDownLatch changeLatch;
37 private int expChangeEventCount;
39 public MockDataTreeChangeListener(final int expChangeEventCount) {
40 reset(expChangeEventCount);
43 public void reset(final int newExpChangeEventCount) {
44 changeLatch = new CountDownLatch(newExpChangeEventCount);
45 this.expChangeEventCount = newExpChangeEventCount;
46 synchronized (changeList) {
52 public void onDataTreeChanged(@Nonnull final Collection<DataTreeCandidate> changes) {
53 if (changeLatch.getCount() > 0) {
54 synchronized (changeList) {
55 changeList.addAll(changes);
57 changeLatch.countDown();
61 @SuppressWarnings({ "unchecked", "rawtypes" })
62 public void waitForChangeEvents(final YangInstanceIdentifier... expPaths) {
63 boolean done = Uninterruptibles.awaitUninterruptibly(changeLatch, 5, TimeUnit.SECONDS);
65 fail(String.format("Missing change notifications. Expected: %d. Actual: %d",
66 expChangeEventCount, expChangeEventCount - changeLatch.getCount()));
69 for (int i = 0; i < expPaths.length; i++) {
70 final DataTreeCandidate candidate = changeList.get(i);
71 final Optional<NormalizedNode<?, ?>> maybeDataAfter = candidate.getRootNode().getDataAfter();
72 if (!maybeDataAfter.isPresent()) {
73 fail(String.format("Change %d does not contain data after. Actual: %s", i + 1,
74 candidate.getRootNode()));
77 final NormalizedNode<?, ?> dataAfter = maybeDataAfter.get();
78 final Optional<YangInstanceIdentifier> relativePath = expPaths[i].relativeTo(candidate.getRootPath());
79 if (!relativePath.isPresent()) {
80 assertEquals(String.format("Change %d does not contain %s. Actual: %s", i + 1, expPaths[i],
81 dataAfter), expPaths[i].getLastPathArgument(), dataAfter.getIdentifier());
83 NormalizedNode<?, ?> nextChild = dataAfter;
84 for (PathArgument pathArg: relativePath.get().getPathArguments()) {
85 boolean found = false;
86 if (nextChild instanceof NormalizedNodeContainer) {
87 Optional<NormalizedNode<?, ?>> maybeChild = ((NormalizedNodeContainer)nextChild)
89 if (maybeChild.isPresent()) {
91 nextChild = maybeChild.get();
96 fail(String.format("Change %d does not contain %s. Actual: %s", i + 1, expPaths[i], dataAfter));
103 public void verifyNotifiedData(final YangInstanceIdentifier... paths) {
104 Set<YangInstanceIdentifier> pathSet = new HashSet<>(Arrays.asList(paths));
105 synchronized (changeList) {
106 for (DataTreeCandidate c : changeList) {
107 pathSet.remove(c.getRootPath());
111 if (!pathSet.isEmpty()) {
112 fail(pathSet + " not present in " + changeList);
116 public void expectNoMoreChanges(final String assertMsg) {
117 Uninterruptibles.sleepUninterruptibly(500, TimeUnit.MILLISECONDS);
118 synchronized (changeList) {
119 assertEquals(assertMsg, expChangeEventCount, changeList.size());
123 public void verifyNoNotifiedData(final YangInstanceIdentifier... paths) {
124 Set<YangInstanceIdentifier> pathSet = new HashSet<>(Arrays.asList(paths));
125 synchronized (changeList) {
126 for (DataTreeCandidate c : changeList) {
127 assertFalse("Unexpected " + c.getRootPath() + " present in DataTreeCandidate",
128 pathSet.contains(c.getRootPath()));