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;
10 import static org.junit.Assert.assertEquals;
11 import static org.junit.Assert.assertNotNull;
12 import static org.junit.Assert.assertTrue;
13 import static org.junit.Assert.fail;
14 import static org.mockito.ArgumentMatchers.any;
15 import static org.mockito.ArgumentMatchers.anyBoolean;
16 import static org.mockito.ArgumentMatchers.eq;
17 import static org.mockito.Mockito.atLeastOnce;
18 import static org.mockito.Mockito.doNothing;
19 import static org.mockito.Mockito.doReturn;
20 import static org.mockito.Mockito.inOrder;
21 import static org.mockito.Mockito.mock;
22 import static org.mockito.Mockito.never;
23 import static org.mockito.Mockito.reset;
24 import static org.mockito.Mockito.verify;
25 import static org.mockito.Mockito.verifyNoMoreInteractions;
26 import static org.opendaylight.controller.cluster.datastore.ShardDataTreeMocking.coordinatedCanCommit;
27 import static org.opendaylight.controller.cluster.datastore.ShardDataTreeMocking.coordinatedCommit;
28 import static org.opendaylight.controller.cluster.datastore.ShardDataTreeMocking.coordinatedPreCommit;
29 import static org.opendaylight.controller.cluster.datastore.ShardDataTreeMocking.immediate3PhaseCommit;
30 import static org.opendaylight.controller.cluster.datastore.ShardDataTreeMocking.immediateCanCommit;
31 import static org.opendaylight.controller.cluster.datastore.ShardDataTreeMocking.immediateCommit;
32 import static org.opendaylight.controller.cluster.datastore.ShardDataTreeMocking.immediatePayloadReplication;
33 import static org.opendaylight.controller.cluster.datastore.ShardDataTreeMocking.immediatePreCommit;
35 import com.google.common.base.Ticker;
36 import com.google.common.primitives.UnsignedLong;
37 import com.google.common.util.concurrent.FutureCallback;
38 import java.math.BigInteger;
39 import java.util.ArrayList;
40 import java.util.Collection;
41 import java.util.HashMap;
42 import java.util.List;
44 import java.util.Optional;
45 import java.util.function.Consumer;
46 import org.junit.Before;
47 import org.junit.Test;
48 import org.mockito.ArgumentCaptor;
49 import org.mockito.InOrder;
50 import org.mockito.Mockito;
51 import org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats;
52 import org.opendaylight.controller.cluster.datastore.persisted.CommitTransactionPayload;
53 import org.opendaylight.controller.md.cluster.datastore.model.CarsModel;
54 import org.opendaylight.controller.md.cluster.datastore.model.PeopleModel;
55 import org.opendaylight.controller.md.cluster.datastore.model.SchemaContextHelper;
56 import org.opendaylight.mdsal.dom.api.DOMDataTreeChangeListener;
57 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
58 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
59 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
60 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidate;
61 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeCandidates;
62 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeModification;
63 import org.opendaylight.yangtools.yang.data.api.schema.tree.DataTreeSnapshot;
64 import org.opendaylight.yangtools.yang.data.api.schema.tree.ModificationType;
65 import org.opendaylight.yangtools.yang.data.api.schema.tree.TreeType;
66 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
68 public class ShardDataTreeTest extends AbstractTest {
69 private static final DatastoreContext DATASTORE_CONTEXT = DatastoreContext.newBuilder().build();
71 private final Shard mockShard = Mockito.mock(Shard.class);
72 private ShardDataTree shardDataTree;
73 private SchemaContext fullSchema;
77 doReturn(Ticker.systemTicker()).when(mockShard).ticker();
78 doReturn(mock(ShardStats.class)).when(mockShard).getShardMBean();
79 doReturn(DATASTORE_CONTEXT).when(mockShard).getDatastoreContext();
81 fullSchema = SchemaContextHelper.full();
83 shardDataTree = new ShardDataTree(mockShard, fullSchema, TreeType.OPERATIONAL);
87 public void testWrite() {
88 modify(false, true, true);
92 public void testMerge() {
93 modify(true, true, true);
96 private void modify(final boolean merge, final boolean expectedCarsPresent, final boolean expectedPeoplePresent) {
97 immediatePayloadReplication(shardDataTree, mockShard);
99 assertEquals(fullSchema, shardDataTree.getSchemaContext());
101 final ReadWriteShardDataTreeTransaction transaction =
102 shardDataTree.newReadWriteTransaction(nextTransactionId());
104 final DataTreeModification snapshot = transaction.getSnapshot();
106 assertNotNull(snapshot);
109 snapshot.merge(CarsModel.BASE_PATH, CarsModel.create());
110 snapshot.merge(PeopleModel.BASE_PATH, PeopleModel.create());
112 snapshot.write(CarsModel.BASE_PATH, CarsModel.create());
113 snapshot.write(PeopleModel.BASE_PATH, PeopleModel.create());
116 final ShardDataTreeCohort cohort = shardDataTree.finishTransaction(transaction, Optional.empty());
118 immediateCanCommit(cohort);
119 immediatePreCommit(cohort);
120 immediateCommit(cohort);
122 final ReadOnlyShardDataTreeTransaction readOnlyShardDataTreeTransaction =
123 shardDataTree.newReadOnlyTransaction(nextTransactionId());
125 final DataTreeSnapshot snapshot1 = readOnlyShardDataTreeTransaction.getSnapshot();
127 final Optional<NormalizedNode<?, ?>> optional = snapshot1.readNode(CarsModel.BASE_PATH);
129 assertEquals(expectedCarsPresent, optional.isPresent());
131 final Optional<NormalizedNode<?, ?>> optional1 = snapshot1.readNode(PeopleModel.BASE_PATH);
133 assertEquals(expectedPeoplePresent, optional1.isPresent());
137 public void bug4359AddRemoveCarOnce() {
138 immediatePayloadReplication(shardDataTree, mockShard);
140 final List<DataTreeCandidate> candidates = new ArrayList<>();
141 candidates.add(addCar(shardDataTree));
142 candidates.add(removeCar(shardDataTree));
144 final NormalizedNode<?, ?> expected = getCars(shardDataTree);
146 applyCandidates(shardDataTree, candidates);
148 final NormalizedNode<?, ?> actual = getCars(shardDataTree);
150 assertEquals(expected, actual);
154 public void bug4359AddRemoveCarTwice() {
155 immediatePayloadReplication(shardDataTree, mockShard);
157 final List<DataTreeCandidate> candidates = new ArrayList<>();
158 candidates.add(addCar(shardDataTree));
159 candidates.add(removeCar(shardDataTree));
160 candidates.add(addCar(shardDataTree));
161 candidates.add(removeCar(shardDataTree));
163 final NormalizedNode<?, ?> expected = getCars(shardDataTree);
165 applyCandidates(shardDataTree, candidates);
167 final NormalizedNode<?, ?> actual = getCars(shardDataTree);
169 assertEquals(expected, actual);
173 public void testListenerNotifiedOnApplySnapshot() throws Exception {
174 immediatePayloadReplication(shardDataTree, mockShard);
176 DOMDataTreeChangeListener listener = mock(DOMDataTreeChangeListener.class);
177 shardDataTree.registerTreeChangeListener(CarsModel.CAR_LIST_PATH.node(CarsModel.CAR_QNAME), listener,
178 Optional.empty(), noop -> { });
180 addCar(shardDataTree, "optima");
182 verifyOnDataTreeChanged(listener, dtc -> {
183 assertEquals("getModificationType", ModificationType.WRITE, dtc.getRootNode().getModificationType());
184 assertEquals("getRootPath", CarsModel.newCarPath("optima"), dtc.getRootPath());
187 addCar(shardDataTree, "sportage");
189 verifyOnDataTreeChanged(listener, dtc -> {
190 assertEquals("getModificationType", ModificationType.WRITE, dtc.getRootNode().getModificationType());
191 assertEquals("getRootPath", CarsModel.newCarPath("sportage"), dtc.getRootPath());
194 ShardDataTree newDataTree = new ShardDataTree(mockShard, fullSchema, TreeType.OPERATIONAL);
195 immediatePayloadReplication(newDataTree, mockShard);
196 addCar(newDataTree, "optima");
197 addCar(newDataTree, "murano");
199 shardDataTree.applySnapshot(newDataTree.takeStateSnapshot());
201 Map<YangInstanceIdentifier, ModificationType> expChanges = new HashMap<>();
202 expChanges.put(CarsModel.newCarPath("optima"), ModificationType.WRITE);
203 expChanges.put(CarsModel.newCarPath("murano"), ModificationType.WRITE);
204 expChanges.put(CarsModel.newCarPath("sportage"), ModificationType.DELETE);
205 verifyOnDataTreeChanged(listener, dtc -> {
206 ModificationType expType = expChanges.remove(dtc.getRootPath());
207 assertNotNull("Got unexpected change for " + dtc.getRootPath(), expType);
208 assertEquals("getModificationType", expType, dtc.getRootNode().getModificationType());
211 if (!expChanges.isEmpty()) {
212 fail("Missing change notifications: " + expChanges);
217 public void testPipelinedTransactionsWithCoordinatedCommits() throws Exception {
218 final ShardDataTreeCohort cohort1 = newShardDataTreeCohort(snapshot ->
219 snapshot.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()));
221 final ShardDataTreeCohort cohort2 = newShardDataTreeCohort(snapshot ->
222 snapshot.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()));
224 NormalizedNode<?, ?> peopleNode = PeopleModel.create();
225 final ShardDataTreeCohort cohort3 = newShardDataTreeCohort(snapshot ->
226 snapshot.write(PeopleModel.BASE_PATH, peopleNode));
228 YangInstanceIdentifier carPath = CarsModel.newCarPath("optima");
229 MapEntryNode carNode = CarsModel.newCarEntry("optima", new BigInteger("100"));
230 final ShardDataTreeCohort cohort4 = newShardDataTreeCohort(snapshot -> snapshot.write(carPath, carNode));
232 immediateCanCommit(cohort1);
233 final FutureCallback<Void> canCommitCallback2 = coordinatedCanCommit(cohort2);
234 final FutureCallback<Void> canCommitCallback3 = coordinatedCanCommit(cohort3);
235 final FutureCallback<Void> canCommitCallback4 = coordinatedCanCommit(cohort4);
237 final FutureCallback<DataTreeCandidate> preCommitCallback1 = coordinatedPreCommit(cohort1);
238 verify(preCommitCallback1).onSuccess(cohort1.getCandidate());
239 verify(canCommitCallback2).onSuccess(null);
241 final FutureCallback<DataTreeCandidate> preCommitCallback2 = coordinatedPreCommit(cohort2);
242 verify(preCommitCallback2).onSuccess(cohort2.getCandidate());
243 verify(canCommitCallback3).onSuccess(null);
245 final FutureCallback<DataTreeCandidate> preCommitCallback3 = coordinatedPreCommit(cohort3);
246 verify(preCommitCallback3).onSuccess(cohort3.getCandidate());
247 verify(canCommitCallback4).onSuccess(null);
249 final FutureCallback<DataTreeCandidate> preCommitCallback4 = coordinatedPreCommit(cohort4);
250 verify(preCommitCallback4).onSuccess(cohort4.getCandidate());
252 final FutureCallback<UnsignedLong> commitCallback2 = coordinatedCommit(cohort2);
253 verify(mockShard, never()).persistPayload(eq(cohort1.getIdentifier()), any(CommitTransactionPayload.class),
255 verifyNoMoreInteractions(commitCallback2);
257 final FutureCallback<UnsignedLong> commitCallback4 = coordinatedCommit(cohort4);
258 verify(mockShard, never()).persistPayload(eq(cohort4.getIdentifier()), any(CommitTransactionPayload.class),
260 verifyNoMoreInteractions(commitCallback4);
262 final FutureCallback<UnsignedLong> commitCallback1 = coordinatedCommit(cohort1);
263 InOrder inOrder = inOrder(mockShard);
264 inOrder.verify(mockShard).persistPayload(eq(cohort1.getIdentifier()), any(CommitTransactionPayload.class),
266 inOrder.verify(mockShard).persistPayload(eq(cohort2.getIdentifier()), any(CommitTransactionPayload.class),
268 verifyNoMoreInteractions(commitCallback1);
269 verifyNoMoreInteractions(commitCallback2);
271 final FutureCallback<UnsignedLong> commitCallback3 = coordinatedCommit(cohort3);
272 inOrder = inOrder(mockShard);
273 inOrder.verify(mockShard).persistPayload(eq(cohort3.getIdentifier()), any(CommitTransactionPayload.class),
275 inOrder.verify(mockShard).persistPayload(eq(cohort4.getIdentifier()), any(CommitTransactionPayload.class),
277 verifyNoMoreInteractions(commitCallback3);
278 verifyNoMoreInteractions(commitCallback4);
280 final ShardDataTreeCohort cohort5 = newShardDataTreeCohort(snapshot ->
281 snapshot.merge(CarsModel.BASE_PATH, CarsModel.emptyContainer()));
282 final FutureCallback<Void> canCommitCallback5 = coordinatedCanCommit(cohort5);
284 // The payload instance doesn't matter - it just needs to be of type CommitTransactionPayload.
285 CommitTransactionPayload mockPayload = CommitTransactionPayload.create(nextTransactionId(),
286 cohort1.getCandidate());
287 shardDataTree.applyReplicatedPayload(cohort1.getIdentifier(), mockPayload);
288 shardDataTree.applyReplicatedPayload(cohort2.getIdentifier(), mockPayload);
289 shardDataTree.applyReplicatedPayload(cohort3.getIdentifier(), mockPayload);
290 shardDataTree.applyReplicatedPayload(cohort4.getIdentifier(), mockPayload);
292 inOrder = inOrder(commitCallback1, commitCallback2, commitCallback3, commitCallback4);
293 inOrder.verify(commitCallback1).onSuccess(any(UnsignedLong.class));
294 inOrder.verify(commitCallback2).onSuccess(any(UnsignedLong.class));
295 inOrder.verify(commitCallback3).onSuccess(any(UnsignedLong.class));
296 inOrder.verify(commitCallback4).onSuccess(any(UnsignedLong.class));
298 verify(canCommitCallback5).onSuccess(null);
300 final DataTreeSnapshot snapshot =
301 shardDataTree.newReadOnlyTransaction(nextTransactionId()).getSnapshot();
302 Optional<NormalizedNode<?, ?>> optional = snapshot.readNode(carPath);
303 assertTrue("Car node present", optional.isPresent());
304 assertEquals("Car node", carNode, optional.get());
306 optional = snapshot.readNode(PeopleModel.BASE_PATH);
307 assertTrue("People node present", optional.isPresent());
308 assertEquals("People node", peopleNode, optional.get());
312 public void testPipelinedTransactionsWithImmediateCommits() throws Exception {
313 final ShardDataTreeCohort cohort1 = newShardDataTreeCohort(snapshot ->
314 snapshot.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()));
316 final ShardDataTreeCohort cohort2 = newShardDataTreeCohort(snapshot ->
317 snapshot.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()));
319 YangInstanceIdentifier carPath = CarsModel.newCarPath("optima");
320 MapEntryNode carNode = CarsModel.newCarEntry("optima", new BigInteger("100"));
321 final ShardDataTreeCohort cohort3 = newShardDataTreeCohort(snapshot -> snapshot.write(carPath, carNode));
323 final FutureCallback<UnsignedLong> commitCallback2 = immediate3PhaseCommit(cohort2);
324 final FutureCallback<UnsignedLong> commitCallback3 = immediate3PhaseCommit(cohort3);
325 final FutureCallback<UnsignedLong> commitCallback1 = immediate3PhaseCommit(cohort1);
327 InOrder inOrder = inOrder(mockShard);
328 inOrder.verify(mockShard).persistPayload(eq(cohort1.getIdentifier()), any(CommitTransactionPayload.class),
330 inOrder.verify(mockShard).persistPayload(eq(cohort2.getIdentifier()), any(CommitTransactionPayload.class),
332 inOrder.verify(mockShard).persistPayload(eq(cohort3.getIdentifier()), any(CommitTransactionPayload.class),
335 // The payload instance doesn't matter - it just needs to be of type CommitTransactionPayload.
336 CommitTransactionPayload mockPayload = CommitTransactionPayload.create(nextTransactionId(),
337 cohort1.getCandidate());
338 shardDataTree.applyReplicatedPayload(cohort1.getIdentifier(), mockPayload);
339 shardDataTree.applyReplicatedPayload(cohort2.getIdentifier(), mockPayload);
340 shardDataTree.applyReplicatedPayload(cohort3.getIdentifier(), mockPayload);
342 inOrder = inOrder(commitCallback1, commitCallback2, commitCallback3);
343 inOrder.verify(commitCallback1).onSuccess(any(UnsignedLong.class));
344 inOrder.verify(commitCallback2).onSuccess(any(UnsignedLong.class));
345 inOrder.verify(commitCallback3).onSuccess(any(UnsignedLong.class));
347 final DataTreeSnapshot snapshot =
348 shardDataTree.newReadOnlyTransaction(nextTransactionId()).getSnapshot();
349 Optional<NormalizedNode<?, ?>> optional = snapshot.readNode(carPath);
350 assertTrue("Car node present", optional.isPresent());
351 assertEquals("Car node", carNode, optional.get());
355 public void testPipelinedTransactionsWithImmediateReplication() {
356 immediatePayloadReplication(shardDataTree, mockShard);
358 final ShardDataTreeCohort cohort1 = newShardDataTreeCohort(snapshot ->
359 snapshot.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()));
361 final ShardDataTreeCohort cohort2 = newShardDataTreeCohort(snapshot ->
362 snapshot.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()));
364 YangInstanceIdentifier carPath = CarsModel.newCarPath("optima");
365 MapEntryNode carNode = CarsModel.newCarEntry("optima", new BigInteger("100"));
366 final ShardDataTreeCohort cohort3 = newShardDataTreeCohort(snapshot -> snapshot.write(carPath, carNode));
368 final FutureCallback<UnsignedLong> commitCallback1 = immediate3PhaseCommit(cohort1);
369 final FutureCallback<UnsignedLong> commitCallback2 = immediate3PhaseCommit(cohort2);
370 final FutureCallback<UnsignedLong> commitCallback3 = immediate3PhaseCommit(cohort3);
372 InOrder inOrder = inOrder(commitCallback1, commitCallback2, commitCallback3);
373 inOrder.verify(commitCallback1).onSuccess(any(UnsignedLong.class));
374 inOrder.verify(commitCallback2).onSuccess(any(UnsignedLong.class));
375 inOrder.verify(commitCallback3).onSuccess(any(UnsignedLong.class));
377 final DataTreeSnapshot snapshot = shardDataTree.newReadOnlyTransaction(nextTransactionId()).getSnapshot();
378 Optional<NormalizedNode<?, ?>> optional = snapshot.readNode(CarsModel.BASE_PATH);
379 assertTrue("Car node present", optional.isPresent());
382 @SuppressWarnings("unchecked")
384 public void testAbortWithPendingCommits() throws Exception {
385 final ShardDataTreeCohort cohort1 = newShardDataTreeCohort(snapshot ->
386 snapshot.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()));
388 final ShardDataTreeCohort cohort2 = newShardDataTreeCohort(snapshot ->
389 snapshot.write(PeopleModel.BASE_PATH, PeopleModel.create()));
391 final ShardDataTreeCohort cohort3 = newShardDataTreeCohort(snapshot ->
392 snapshot.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()));
394 YangInstanceIdentifier carPath = CarsModel.newCarPath("optima");
395 MapEntryNode carNode = CarsModel.newCarEntry("optima", new BigInteger("100"));
396 final ShardDataTreeCohort cohort4 = newShardDataTreeCohort(snapshot -> snapshot.write(carPath, carNode));
398 coordinatedCanCommit(cohort2);
399 immediateCanCommit(cohort1);
400 coordinatedCanCommit(cohort3);
401 coordinatedCanCommit(cohort4);
403 coordinatedPreCommit(cohort1);
404 coordinatedPreCommit(cohort2);
405 coordinatedPreCommit(cohort3);
407 FutureCallback<Void> mockAbortCallback = mock(FutureCallback.class);
408 doNothing().when(mockAbortCallback).onSuccess(null);
409 cohort2.abort(mockAbortCallback);
410 verify(mockAbortCallback).onSuccess(null);
412 coordinatedPreCommit(cohort4);
413 coordinatedCommit(cohort1);
414 coordinatedCommit(cohort3);
415 coordinatedCommit(cohort4);
417 InOrder inOrder = inOrder(mockShard);
418 inOrder.verify(mockShard).persistPayload(eq(cohort1.getIdentifier()), any(CommitTransactionPayload.class),
420 inOrder.verify(mockShard).persistPayload(eq(cohort3.getIdentifier()), any(CommitTransactionPayload.class),
422 inOrder.verify(mockShard).persistPayload(eq(cohort4.getIdentifier()), any(CommitTransactionPayload.class),
425 // The payload instance doesn't matter - it just needs to be of type CommitTransactionPayload.
426 CommitTransactionPayload mockPayload = CommitTransactionPayload.create(nextTransactionId(),
427 cohort1.getCandidate());
428 shardDataTree.applyReplicatedPayload(cohort1.getIdentifier(), mockPayload);
429 shardDataTree.applyReplicatedPayload(cohort3.getIdentifier(), mockPayload);
430 shardDataTree.applyReplicatedPayload(cohort4.getIdentifier(), mockPayload);
432 final DataTreeSnapshot snapshot =
433 shardDataTree.newReadOnlyTransaction(nextTransactionId()).getSnapshot();
434 Optional<NormalizedNode<?, ?>> optional = snapshot.readNode(carPath);
435 assertTrue("Car node present", optional.isPresent());
436 assertEquals("Car node", carNode, optional.get());
439 @SuppressWarnings("unchecked")
441 public void testAbortWithFailedRebase() {
442 immediatePayloadReplication(shardDataTree, mockShard);
444 final ShardDataTreeCohort cohort1 = newShardDataTreeCohort(snapshot ->
445 snapshot.write(CarsModel.BASE_PATH, CarsModel.emptyContainer()));
447 final ShardDataTreeCohort cohort2 = newShardDataTreeCohort(snapshot ->
448 snapshot.write(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode()));
450 NormalizedNode<?, ?> peopleNode = PeopleModel.create();
451 final ShardDataTreeCohort cohort3 = newShardDataTreeCohort(snapshot ->
452 snapshot.write(PeopleModel.BASE_PATH, peopleNode));
454 immediateCanCommit(cohort1);
455 FutureCallback<Void> canCommitCallback2 = coordinatedCanCommit(cohort2);
457 coordinatedPreCommit(cohort1);
458 verify(canCommitCallback2).onSuccess(null);
460 FutureCallback<Void> mockAbortCallback = mock(FutureCallback.class);
461 doNothing().when(mockAbortCallback).onSuccess(null);
462 cohort1.abort(mockAbortCallback);
463 verify(mockAbortCallback).onSuccess(null);
465 FutureCallback<DataTreeCandidate> preCommitCallback2 = coordinatedPreCommit(cohort2);
466 verify(preCommitCallback2).onFailure(any(Throwable.class));
468 immediateCanCommit(cohort3);
469 immediatePreCommit(cohort3);
470 immediateCommit(cohort3);
472 final DataTreeSnapshot snapshot =
473 shardDataTree.newReadOnlyTransaction(nextTransactionId()).getSnapshot();
474 Optional<NormalizedNode<?, ?>> optional = snapshot.readNode(PeopleModel.BASE_PATH);
475 assertTrue("People node present", optional.isPresent());
476 assertEquals("People node", peopleNode, optional.get());
479 private ShardDataTreeCohort newShardDataTreeCohort(final DataTreeOperation operation) {
480 final ReadWriteShardDataTreeTransaction transaction =
481 shardDataTree.newReadWriteTransaction(nextTransactionId());
482 final DataTreeModification snapshot = transaction.getSnapshot();
483 operation.execute(snapshot);
484 return shardDataTree.finishTransaction(transaction, Optional.empty());
487 @SuppressWarnings({ "rawtypes", "unchecked" })
488 private static void verifyOnDataTreeChanged(final DOMDataTreeChangeListener listener,
489 final Consumer<DataTreeCandidate> callback) {
490 ArgumentCaptor<Collection> changes = ArgumentCaptor.forClass(Collection.class);
491 verify(listener, atLeastOnce()).onDataTreeChanged(changes.capture());
492 for (Collection list : changes.getAllValues()) {
493 for (Object dtc : list) {
494 callback.accept((DataTreeCandidate)dtc);
501 private static NormalizedNode<?, ?> getCars(final ShardDataTree shardDataTree) {
502 final ReadOnlyShardDataTreeTransaction readOnlyShardDataTreeTransaction =
503 shardDataTree.newReadOnlyTransaction(nextTransactionId());
504 final DataTreeSnapshot snapshot1 = readOnlyShardDataTreeTransaction.getSnapshot();
506 final Optional<NormalizedNode<?, ?>> optional = snapshot1.readNode(CarsModel.BASE_PATH);
508 assertTrue(optional.isPresent());
510 return optional.get();
513 private static DataTreeCandidate addCar(final ShardDataTree shardDataTree) {
514 return addCar(shardDataTree, "altima");
517 private static DataTreeCandidate addCar(final ShardDataTree shardDataTree, final String name) {
518 return doTransaction(shardDataTree, snapshot -> {
519 snapshot.merge(CarsModel.BASE_PATH, CarsModel.emptyContainer());
520 snapshot.merge(CarsModel.CAR_LIST_PATH, CarsModel.newCarMapNode());
521 snapshot.write(CarsModel.newCarPath(name), CarsModel.newCarEntry(name, new BigInteger("100")));
525 private static DataTreeCandidate removeCar(final ShardDataTree shardDataTree) {
526 return doTransaction(shardDataTree, snapshot -> snapshot.delete(CarsModel.newCarPath("altima")));
530 private interface DataTreeOperation {
531 void execute(DataTreeModification snapshot);
534 private static DataTreeCandidate doTransaction(final ShardDataTree shardDataTree,
535 final DataTreeOperation operation) {
536 final ReadWriteShardDataTreeTransaction transaction =
537 shardDataTree.newReadWriteTransaction(nextTransactionId());
538 final DataTreeModification snapshot = transaction.getSnapshot();
539 operation.execute(snapshot);
540 final ShardDataTreeCohort cohort = shardDataTree.finishTransaction(transaction, Optional.empty());
542 immediateCanCommit(cohort);
543 immediatePreCommit(cohort);
544 final DataTreeCandidate candidate = cohort.getCandidate();
545 immediateCommit(cohort);
550 private static DataTreeCandidate applyCandidates(final ShardDataTree shardDataTree,
551 final List<DataTreeCandidate> candidates) {
552 final ReadWriteShardDataTreeTransaction transaction =
553 shardDataTree.newReadWriteTransaction(nextTransactionId());
554 final DataTreeModification snapshot = transaction.getSnapshot();
555 for (final DataTreeCandidate candidateTip : candidates) {
556 DataTreeCandidates.applyToModification(snapshot, candidateTip);
558 final ShardDataTreeCohort cohort = shardDataTree.finishTransaction(transaction, Optional.empty());
560 immediateCanCommit(cohort);
561 immediatePreCommit(cohort);
562 final DataTreeCandidate candidate = cohort.getCandidate();
563 immediateCommit(cohort);