2 * Copyright (c) 2015 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.cluster.datastore.entityownership;
10 import static org.junit.Assert.assertEquals;
11 import static org.junit.Assert.assertNull;
12 import static org.junit.Assert.assertThat;
13 import static org.junit.Assert.assertTrue;
14 import static org.mockito.AdditionalMatchers.or;
15 import static org.mockito.Mockito.atMost;
16 import static org.mockito.Mockito.doNothing;
17 import static org.mockito.Mockito.reset;
18 import static org.mockito.Mockito.timeout;
19 import static org.mockito.Mockito.verify;
20 import static org.opendaylight.controller.cluster.datastore.MemberNode.verifyRaftState;
21 import static org.opendaylight.controller.cluster.datastore.entityownership.AbstractEntityOwnershipTest.ownershipChange;
22 import static org.opendaylight.controller.cluster.datastore.entityownership.DistributedEntityOwnershipService.ENTITY_OWNERSHIP_SHARD_NAME;
23 import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.CANDIDATE_NAME_NODE_ID;
24 import static org.opendaylight.controller.cluster.datastore.entityownership.EntityOwnersModel.entityPath;
25 import akka.actor.Status.Failure;
26 import akka.actor.Status.Success;
27 import akka.cluster.Cluster;
28 import akka.testkit.JavaTestKit;
29 import com.google.common.base.Function;
30 import com.google.common.base.Optional;
31 import com.google.common.base.Stopwatch;
32 import com.google.common.collect.Iterables;
33 import com.google.common.util.concurrent.Uninterruptibles;
34 import java.util.ArrayList;
35 import java.util.Arrays;
36 import java.util.Collection;
37 import java.util.List;
38 import java.util.concurrent.TimeUnit;
39 import org.junit.After;
40 import org.junit.Before;
41 import org.junit.Test;
42 import org.mockito.ArgumentCaptor;
43 import org.mockito.Mock;
44 import org.mockito.Mockito;
45 import org.mockito.MockitoAnnotations;
46 import org.opendaylight.controller.cluster.datastore.DatastoreContext;
47 import org.opendaylight.controller.cluster.datastore.DistributedDataStore;
48 import org.opendaylight.controller.cluster.datastore.MemberNode;
49 import org.opendaylight.controller.cluster.datastore.MemberNode.RaftStateVerifier;
50 import org.opendaylight.controller.cluster.datastore.entityownership.selectionstrategy.EntityOwnerSelectionStrategyConfig;
51 import org.opendaylight.controller.cluster.datastore.messages.AddShardReplica;
52 import org.opendaylight.controller.cluster.raft.client.messages.OnDemandRaftState;
53 import org.opendaylight.controller.cluster.raft.utils.InMemoryJournal;
54 import org.opendaylight.controller.cluster.raft.utils.InMemorySnapshotStore;
55 import org.opendaylight.controller.md.cluster.datastore.model.SchemaContextHelper;
56 import org.opendaylight.controller.md.sal.common.api.clustering.CandidateAlreadyRegisteredException;
57 import org.opendaylight.controller.md.sal.common.api.clustering.Entity;
58 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipCandidateRegistration;
59 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipChange;
60 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipListener;
61 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipService;
62 import org.opendaylight.controller.md.sal.common.api.clustering.EntityOwnershipState;
63 import org.opendaylight.yang.gen.v1.urn.opendaylight.params.xml.ns.yang.controller.md.sal.clustering.entity.owners.rev150804.entity.owners.entity.type.entity.Candidate;
64 import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
65 import org.opendaylight.yangtools.yang.data.api.schema.MapEntryNode;
66 import org.opendaylight.yangtools.yang.data.api.schema.MapNode;
67 import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
68 import org.opendaylight.yangtools.yang.model.api.SchemaContext;
71 * End-to-end integration tests for the entity ownership functionality.
73 * @author Thomas Pantelis
75 public class DistributedEntityOwnershipIntegrationTest {
76 private static final String MODULE_SHARDS_CONFIG = "module-shards-default.conf";
77 private static final String MODULE_SHARDS_MEMBER_1_CONFIG = "module-shards-default-member-1.conf";
78 private static final String ENTITY_TYPE1 = "entityType1";
79 private static final String ENTITY_TYPE2 = "entityType2";
80 private static final Entity ENTITY1 = new Entity(ENTITY_TYPE1, "entity1");
81 private static final Entity ENTITY1_2 = new Entity(ENTITY_TYPE2, "entity1");
82 private static final Entity ENTITY2 = new Entity(ENTITY_TYPE1, "entity2");
83 private static final Entity ENTITY3 = new Entity(ENTITY_TYPE1, "entity3");
84 private static final Entity ENTITY4 = new Entity(ENTITY_TYPE1, "entity4");
85 private static final SchemaContext SCHEMA_CONTEXT = SchemaContextHelper.entityOwners();
87 private final DatastoreContext.Builder leaderDatastoreContextBuilder =
88 DatastoreContext.newBuilder().shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(5).
89 shardIsolatedLeaderCheckIntervalInMillis(1000000);
91 private final DatastoreContext.Builder followerDatastoreContextBuilder =
92 DatastoreContext.newBuilder().shardHeartbeatIntervalInMillis(100).shardElectionTimeoutFactor(10000);
94 private final List<MemberNode> memberNodes = new ArrayList<>();
97 private EntityOwnershipListener leaderMockListener;
100 private EntityOwnershipListener leaderMockListener2;
103 private EntityOwnershipListener follower1MockListener;
106 private EntityOwnershipListener follower2MockListener;
109 public void setUp() {
110 MockitoAnnotations.initMocks(this);
111 InMemoryJournal.clear();
112 InMemorySnapshotStore.clear();
116 public void tearDown() {
117 for(MemberNode m: memberNodes) {
122 private DistributedEntityOwnershipService newOwnershipService(DistributedDataStore datastore) {
123 DistributedEntityOwnershipService service = new DistributedEntityOwnershipService(datastore,
124 EntityOwnerSelectionStrategyConfig.newBuilder().build());
130 public void testFunctionalityWithThreeNodes() throws Exception {
131 String name = "test";
132 MemberNode leaderNode = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name ).
133 moduleShardsConfig(MODULE_SHARDS_CONFIG).schemaContext(SCHEMA_CONTEXT).createOperDatastore(false).
134 datastoreContextBuilder(leaderDatastoreContextBuilder).build();
136 MemberNode follower1Node = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name ).
137 moduleShardsConfig(MODULE_SHARDS_CONFIG).schemaContext(SCHEMA_CONTEXT).createOperDatastore(false).
138 datastoreContextBuilder(followerDatastoreContextBuilder).build();
140 MemberNode follower2Node = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name ).
141 moduleShardsConfig(MODULE_SHARDS_CONFIG).schemaContext(SCHEMA_CONTEXT).createOperDatastore(false).
142 datastoreContextBuilder(followerDatastoreContextBuilder).build();
144 DistributedDataStore leaderDistributedDataStore = leaderNode.configDataStore();
146 leaderDistributedDataStore.waitTillReady();
147 follower1Node.configDataStore().waitTillReady();
148 follower2Node.configDataStore().waitTillReady();
150 EntityOwnershipService leaderEntityOwnershipService = newOwnershipService(leaderDistributedDataStore);
151 EntityOwnershipService follower1EntityOwnershipService = newOwnershipService(follower1Node.configDataStore());
152 EntityOwnershipService follower2EntityOwnershipService = newOwnershipService(follower2Node.configDataStore());
154 leaderNode.kit().waitUntilLeader(leaderNode.configDataStore().getActorContext(), ENTITY_OWNERSHIP_SHARD_NAME);
156 leaderEntityOwnershipService.registerListener(ENTITY_TYPE1, leaderMockListener);
157 leaderEntityOwnershipService.registerListener(ENTITY_TYPE2, leaderMockListener2);
158 follower1EntityOwnershipService.registerListener(ENTITY_TYPE1, follower1MockListener);
160 // Register leader candidate for entity1 and verify it becomes owner
162 leaderEntityOwnershipService.registerCandidate(ENTITY1);
163 verify(leaderMockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY1, false, true, true));
164 verify(follower1MockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY1, false, false, true));
165 reset(leaderMockListener, follower1MockListener);
167 verifyGetOwnershipState(leaderEntityOwnershipService, ENTITY1, true, true);
168 verifyGetOwnershipState(follower1EntityOwnershipService, ENTITY1, false, true);
170 // Register leader candidate for entity1_2 (same id, different type) and verify it becomes owner
172 leaderEntityOwnershipService.registerCandidate(ENTITY1_2);
173 verify(leaderMockListener2, timeout(5000)).ownershipChanged(ownershipChange(ENTITY1_2, false, true, true));
174 verify(leaderMockListener, timeout(300).never()).ownershipChanged(ownershipChange(ENTITY1_2));
175 reset(leaderMockListener2);
177 // Register follower1 candidate for entity1 and verify it gets added but doesn't become owner
179 follower1EntityOwnershipService.registerCandidate(ENTITY1);
180 verifyCandidates(leaderDistributedDataStore, ENTITY1, "member-1", "member-2");
181 verifyOwner(leaderDistributedDataStore, ENTITY1, "member-1");
182 verify(leaderMockListener, timeout(300).never()).ownershipChanged(ownershipChange(ENTITY1));
183 verify(follower1MockListener, timeout(300).never()).ownershipChanged(ownershipChange(ENTITY1));
185 // Register follower1 candidate for entity2 and verify it becomes owner
187 EntityOwnershipCandidateRegistration follower1Entity2Reg = follower1EntityOwnershipService.registerCandidate(ENTITY2);
188 verify(follower1MockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY2, false, true, true));
189 verify(leaderMockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY2, false, false, true));
190 reset(leaderMockListener, follower1MockListener);
192 // Register follower2 candidate for entity2 and verify it gets added but doesn't become owner
194 follower2EntityOwnershipService.registerListener(ENTITY_TYPE1, follower2MockListener);
195 follower2EntityOwnershipService.registerCandidate(ENTITY2);
196 verifyCandidates(leaderDistributedDataStore, ENTITY2, "member-2", "member-3");
197 verifyOwner(leaderDistributedDataStore, ENTITY2, "member-2");
199 // Unregister follower1 candidate for entity2 and verify follower2 becomes owner
201 follower1Entity2Reg.close();
202 verifyCandidates(leaderDistributedDataStore, ENTITY2, "member-3");
203 verifyOwner(leaderDistributedDataStore, ENTITY2, "member-3");
204 verify(follower1MockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY2, true, false, true));
205 verify(leaderMockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY2, false, false, true));
207 // Depending on timing, follower2MockListener could get ownershipChanged with "false, false, true" if
208 // if the original ownership change with "member-2 is replicated to follower2 after the listener is
210 Uninterruptibles.sleepUninterruptibly(500, TimeUnit.MILLISECONDS);
211 verify(follower2MockListener, atMost(1)).ownershipChanged(ownershipChange(ENTITY2, false, false, true));
212 verify(follower2MockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY2, false, true, true));
214 // Register follower1 candidate for entity3 and verify it becomes owner
216 follower1EntityOwnershipService.registerCandidate(ENTITY3);
217 verifyOwner(leaderDistributedDataStore, ENTITY3, "member-2");
218 verify(follower1MockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY3, false, true, true));
219 verify(follower2MockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY3, false, false, true));
220 verify(leaderMockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY3, false, false, true));
222 // Register follower2 candidate for entity4 and verify it becomes owner
224 follower2EntityOwnershipService.registerCandidate(ENTITY4);
225 verifyOwner(leaderDistributedDataStore, ENTITY4, "member-3");
226 verify(follower2MockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY4, false, true, true));
227 verify(follower1MockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY4, false, false, true));
228 verify(leaderMockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY4, false, false, true));
229 reset(follower1MockListener, follower2MockListener);
231 // Register follower1 candidate for entity4 and verify it gets added but doesn't become owner
233 follower1EntityOwnershipService.registerCandidate(ENTITY4);
234 verifyCandidates(leaderDistributedDataStore, ENTITY4, "member-3", "member-2");
235 verifyOwner(leaderDistributedDataStore, ENTITY4, "member-3");
237 // Shutdown follower2 and verify it's owned entities (entity 2 & 4) get re-assigned
239 reset(leaderMockListener, follower1MockListener);
240 follower2Node.cleanup();
242 verify(follower1MockListener, timeout(15000).times(2)).ownershipChanged(or(ownershipChange(ENTITY4, false, true, true),
243 ownershipChange(ENTITY2, false, false, false)));
244 verify(leaderMockListener, timeout(15000).times(2)).ownershipChanged(or(ownershipChange(ENTITY4, false, false, true),
245 ownershipChange(ENTITY2, false, false, false)));
246 verifyOwner(leaderDistributedDataStore, ENTITY2, ""); // no other candidate
248 // Register leader candidate for entity2 and verify it becomes owner
250 EntityOwnershipCandidateRegistration leaderEntity2Reg = leaderEntityOwnershipService.registerCandidate(ENTITY2);
251 verify(leaderMockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY2, false, true, true));
252 verifyOwner(leaderDistributedDataStore, ENTITY2, "member-1");
254 // Unregister leader candidate for entity2 and verify the owner is cleared
256 leaderEntity2Reg.close();
257 verifyOwner(leaderDistributedDataStore, ENTITY2, "");
258 verify(leaderMockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY2, true, false, false));
259 verify(follower1MockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY2, false, false, false));
263 * Reproduces bug <a href="https://bugs.opendaylight.org/show_bug.cgi?id=4554">4554</a>
265 * @throws CandidateAlreadyRegisteredException
268 public void testCloseCandidateRegistrationInQuickSuccession() throws CandidateAlreadyRegisteredException {
269 String name = "testCloseCandidateRegistrationInQuickSuccession";
270 MemberNode leaderNode = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name ).
271 moduleShardsConfig(MODULE_SHARDS_CONFIG).schemaContext(SCHEMA_CONTEXT).createOperDatastore(false).
272 datastoreContextBuilder(leaderDatastoreContextBuilder).build();
274 MemberNode follower1Node = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name ).
275 moduleShardsConfig(MODULE_SHARDS_CONFIG).schemaContext(SCHEMA_CONTEXT).createOperDatastore(false).
276 datastoreContextBuilder(followerDatastoreContextBuilder).build();
278 MemberNode follower2Node = MemberNode.builder(memberNodes).akkaConfig("Member3").testName(name ).
279 moduleShardsConfig(MODULE_SHARDS_CONFIG).schemaContext(SCHEMA_CONTEXT).createOperDatastore(false).
280 datastoreContextBuilder(followerDatastoreContextBuilder).build();
282 DistributedDataStore leaderDistributedDataStore = leaderNode.configDataStore();
284 leaderDistributedDataStore.waitTillReady();
285 follower1Node.configDataStore().waitTillReady();
286 follower2Node.configDataStore().waitTillReady();
288 EntityOwnershipService leaderEntityOwnershipService = newOwnershipService(leaderDistributedDataStore);
289 EntityOwnershipService follower1EntityOwnershipService = newOwnershipService(follower1Node.configDataStore());
290 EntityOwnershipService follower2EntityOwnershipService = newOwnershipService(follower2Node.configDataStore());
292 leaderNode.kit().waitUntilLeader(leaderNode.configDataStore().getActorContext(), ENTITY_OWNERSHIP_SHARD_NAME);
294 leaderEntityOwnershipService.registerListener(ENTITY_TYPE1, leaderMockListener);
295 follower1EntityOwnershipService.registerListener(ENTITY_TYPE1, follower1MockListener);
296 follower2EntityOwnershipService.registerListener(ENTITY_TYPE1, follower2MockListener);
298 final EntityOwnershipCandidateRegistration candidate1 = leaderEntityOwnershipService.registerCandidate(ENTITY1);
299 final EntityOwnershipCandidateRegistration candidate2 = follower1EntityOwnershipService.registerCandidate(ENTITY1);
300 final EntityOwnershipCandidateRegistration candidate3 = follower2EntityOwnershipService.registerCandidate(ENTITY1);
302 verify(leaderMockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY1, false, true, true));
304 Mockito.reset(leaderMockListener);
310 ArgumentCaptor<EntityOwnershipChange> leaderChangeCaptor = ArgumentCaptor.forClass(EntityOwnershipChange.class);
311 ArgumentCaptor<EntityOwnershipChange> follower1ChangeCaptor = ArgumentCaptor.forClass(EntityOwnershipChange.class);
312 ArgumentCaptor<EntityOwnershipChange> follower2ChangeCaptor = ArgumentCaptor.forClass(EntityOwnershipChange.class);
313 doNothing().when(leaderMockListener).ownershipChanged(leaderChangeCaptor.capture());
314 doNothing().when(follower1MockListener).ownershipChanged(follower1ChangeCaptor.capture());
315 doNothing().when(follower2MockListener).ownershipChanged(follower2ChangeCaptor.capture());
317 boolean passed = false;
318 for(int i=0;i<100;i++) {
319 Uninterruptibles.sleepUninterruptibly(50, TimeUnit.MILLISECONDS);
320 if(!leaderEntityOwnershipService.getOwnershipState(ENTITY1).get().hasOwner() &&
321 !follower1EntityOwnershipService.getOwnershipState(ENTITY1).get().hasOwner() &&
322 !follower2EntityOwnershipService.getOwnershipState(ENTITY1).get().hasOwner() &&
323 leaderChangeCaptor.getAllValues().size() > 0 && !leaderChangeCaptor.getValue().hasOwner() &&
324 leaderChangeCaptor.getAllValues().size() > 0 && !follower1ChangeCaptor.getValue().hasOwner() &&
325 leaderChangeCaptor.getAllValues().size() > 0 && !follower2ChangeCaptor.getValue().hasOwner()) {
331 assertTrue("No ownership change message was sent with hasOwner=false", passed);
335 * Tests bootstrapping the entity-ownership shard when there's no shards initially configured for local
336 * member. The entity-ownership shard is initially created as inactive (ie remains a follower), requiring
337 * an AddShardReplica request to join it to an existing leader.
340 public void testEntityOwnershipShardBootstrapping() throws Throwable {
341 String name = "testEntityOwnershipShardBootstrapping";
342 String moduleShardsConfig = MODULE_SHARDS_MEMBER_1_CONFIG;
343 MemberNode leaderNode = MemberNode.builder(memberNodes).akkaConfig("Member1").testName(name ).
344 moduleShardsConfig(moduleShardsConfig).schemaContext(SCHEMA_CONTEXT).createOperDatastore(false).
345 datastoreContextBuilder(leaderDatastoreContextBuilder).build();
347 DistributedDataStore leaderDistributedDataStore = leaderNode.configDataStore();
348 EntityOwnershipService leaderEntityOwnershipService = newOwnershipService(leaderDistributedDataStore);
350 leaderNode.kit().waitUntilLeader(leaderNode.configDataStore().getActorContext(), ENTITY_OWNERSHIP_SHARD_NAME);
352 MemberNode follower1Node = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name ).
353 moduleShardsConfig(moduleShardsConfig).schemaContext(SCHEMA_CONTEXT).createOperDatastore(false).
354 datastoreContextBuilder(followerDatastoreContextBuilder).build();
356 DistributedDataStore follower1DistributedDataStore = follower1Node.configDataStore();
357 follower1DistributedDataStore.waitTillReady();
359 leaderNode.waitForMembersUp("member-2");
360 follower1Node.waitForMembersUp("member-1");
362 EntityOwnershipService follower1EntityOwnershipService = newOwnershipService(follower1DistributedDataStore);
364 leaderEntityOwnershipService.registerListener(ENTITY_TYPE1, leaderMockListener);
366 // Register a candidate for follower1 - should get queued since follower1 has no leader
367 EntityOwnershipCandidateRegistration candidateReg = follower1EntityOwnershipService.registerCandidate(ENTITY1);
368 verify(leaderMockListener, timeout(300).never()).ownershipChanged(ownershipChange(ENTITY1));
370 // Add replica in follower1
371 AddShardReplica addReplica = new AddShardReplica(ENTITY_OWNERSHIP_SHARD_NAME);
372 follower1DistributedDataStore.getActorContext().getShardManager().tell(addReplica , follower1Node.kit().getRef());
373 Object reply = follower1Node.kit().expectMsgAnyClassOf(JavaTestKit.duration("5 sec"), Success.class, Failure.class);
374 if(reply instanceof Failure) {
375 throw new AssertionError("AddShardReplica failed", ((Failure)reply).cause());
378 // The queued candidate registration should proceed
379 verify(leaderMockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY1, false, false, true));
380 reset(leaderMockListener);
382 candidateReg.close();
383 verify(leaderMockListener, timeout(5000)).ownershipChanged(ownershipChange(ENTITY1, false, false, false));
384 reset(leaderMockListener);
386 // Restart follower1 and verify the entity ownership shard is re-instated by registering.
387 Cluster.get(leaderNode.kit().getSystem()).down(Cluster.get(follower1Node.kit().getSystem()).selfAddress());
388 follower1Node.cleanup();
390 follower1Node = MemberNode.builder(memberNodes).akkaConfig("Member2").testName(name ).
391 moduleShardsConfig(moduleShardsConfig).schemaContext(SCHEMA_CONTEXT).createOperDatastore(false).
392 datastoreContextBuilder(followerDatastoreContextBuilder).build();
393 follower1EntityOwnershipService = newOwnershipService(follower1Node.configDataStore());
395 follower1EntityOwnershipService.registerCandidate(ENTITY1);
396 verify(leaderMockListener, timeout(20000)).ownershipChanged(ownershipChange(ENTITY1, false, false, true));
398 verifyRaftState(follower1Node.configDataStore(), ENTITY_OWNERSHIP_SHARD_NAME, new RaftStateVerifier() {
400 public void verify(OnDemandRaftState raftState) {
401 assertNull("Custom RaftPolicy class name", raftState.getCustomRaftPolicyClassName());
402 assertEquals("Peer count", 1, raftState.getPeerAddresses().keySet().size());
403 assertThat("Peer Id", Iterables.<String>getLast(raftState.getPeerAddresses().keySet()),
404 org.hamcrest.CoreMatchers.containsString("member-1"));
409 private static void verifyGetOwnershipState(EntityOwnershipService service, Entity entity,
410 boolean isOwner, boolean hasOwner) {
411 Optional<EntityOwnershipState> state = service.getOwnershipState(entity);
412 assertEquals("getOwnershipState present", true, state.isPresent());
413 assertEquals("isOwner", isOwner, state.get().isOwner());
414 assertEquals("hasOwner", hasOwner, state.get().hasOwner());
417 private static void verifyCandidates(DistributedDataStore dataStore, Entity entity, String... expCandidates) throws Exception {
418 AssertionError lastError = null;
419 Stopwatch sw = Stopwatch.createStarted();
420 while(sw.elapsed(TimeUnit.MILLISECONDS) <= 5000) {
421 Optional<NormalizedNode<?, ?>> possible = dataStore.newReadOnlyTransaction().read(
422 entityPath(entity.getType(), entity.getId()).node(Candidate.QNAME)).get(5, TimeUnit.SECONDS);
424 assertEquals("Candidates not found for " + entity, true, possible.isPresent());
425 Collection<String> actual = new ArrayList<>();
426 for(MapEntryNode candidate: ((MapNode)possible.get()).getValue()) {
427 actual.add(candidate.getChild(CANDIDATE_NAME_NODE_ID).get().getValue().toString());
430 assertEquals("Candidates for " + entity, Arrays.asList(expCandidates), actual);
432 } catch (AssertionError e) {
434 Uninterruptibles.sleepUninterruptibly(300, TimeUnit.MILLISECONDS);
441 private static void verifyOwner(final DistributedDataStore dataStore, Entity entity, String expOwner) {
442 AbstractEntityOwnershipTest.verifyOwner(expOwner, entity.getType(), entity.getId(),
443 new Function<YangInstanceIdentifier, NormalizedNode<?,?>>() {
445 public NormalizedNode<?, ?> apply(YangInstanceIdentifier path) {
447 return dataStore.newReadOnlyTransaction().read(path).get(5, TimeUnit.SECONDS).get();
448 } catch (Exception e) {