2 * Copyright (c) 2014, 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.raft;
10 import static org.awaitility.Awaitility.await;
11 import static org.junit.Assert.assertEquals;
12 import static org.junit.Assert.assertNotNull;
13 import static org.junit.Assert.assertNotSame;
14 import static org.junit.Assert.assertNull;
15 import static org.junit.Assert.assertSame;
16 import static org.junit.Assert.assertTrue;
17 import static org.mockito.ArgumentMatchers.any;
18 import static org.mockito.ArgumentMatchers.eq;
19 import static org.mockito.ArgumentMatchers.same;
20 import static org.mockito.Mockito.doReturn;
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.timeout;
25 import static org.mockito.Mockito.verify;
27 import akka.actor.ActorRef;
28 import akka.actor.PoisonPill;
29 import akka.actor.Status.Failure;
30 import akka.actor.Terminated;
31 import akka.dispatch.Dispatchers;
32 import akka.japi.Procedure;
33 import akka.persistence.SaveSnapshotFailure;
34 import akka.persistence.SaveSnapshotSuccess;
35 import akka.persistence.SnapshotMetadata;
36 import akka.persistence.SnapshotOffer;
37 import akka.protobuf.ByteString;
38 import akka.testkit.TestActorRef;
39 import akka.testkit.javadsl.TestKit;
40 import com.google.common.base.Optional;
41 import com.google.common.collect.ImmutableMap;
42 import com.google.common.util.concurrent.Uninterruptibles;
43 import java.io.ByteArrayOutputStream;
44 import java.io.ObjectOutputStream;
45 import java.time.Duration;
46 import java.util.ArrayList;
47 import java.util.Arrays;
48 import java.util.Collections;
49 import java.util.HashMap;
50 import java.util.List;
52 import java.util.concurrent.ExecutorService;
53 import java.util.concurrent.Executors;
54 import java.util.concurrent.TimeUnit;
55 import java.util.concurrent.TimeoutException;
56 import org.junit.After;
57 import org.junit.Before;
58 import org.junit.Test;
59 import org.mockito.ArgumentCaptor;
60 import org.opendaylight.controller.cluster.DataPersistenceProvider;
61 import org.opendaylight.controller.cluster.NonPersistentDataProvider;
62 import org.opendaylight.controller.cluster.PersistentDataProvider;
63 import org.opendaylight.controller.cluster.notifications.LeaderStateChanged;
64 import org.opendaylight.controller.cluster.notifications.RoleChanged;
65 import org.opendaylight.controller.cluster.raft.AbstractRaftActorIntegrationTest.TestPersist;
66 import org.opendaylight.controller.cluster.raft.AbstractRaftActorIntegrationTest.TestRaftActor;
67 import org.opendaylight.controller.cluster.raft.MockRaftActor.MockSnapshotState;
68 import org.opendaylight.controller.cluster.raft.MockRaftActorContext.MockPayload;
69 import org.opendaylight.controller.cluster.raft.base.messages.ApplySnapshot;
70 import org.opendaylight.controller.cluster.raft.base.messages.ApplyState;
71 import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshotReply;
72 import org.opendaylight.controller.cluster.raft.base.messages.LeaderTransitioning;
73 import org.opendaylight.controller.cluster.raft.base.messages.SendHeartBeat;
74 import org.opendaylight.controller.cluster.raft.base.messages.SwitchBehavior;
75 import org.opendaylight.controller.cluster.raft.behaviors.Follower;
76 import org.opendaylight.controller.cluster.raft.behaviors.Leader;
77 import org.opendaylight.controller.cluster.raft.behaviors.RaftActorBehavior;
78 import org.opendaylight.controller.cluster.raft.client.messages.GetSnapshot;
79 import org.opendaylight.controller.cluster.raft.client.messages.GetSnapshotReply;
80 import org.opendaylight.controller.cluster.raft.messages.AppendEntries;
81 import org.opendaylight.controller.cluster.raft.messages.AppendEntriesReply;
82 import org.opendaylight.controller.cluster.raft.persisted.ApplyJournalEntries;
83 import org.opendaylight.controller.cluster.raft.persisted.ByteState;
84 import org.opendaylight.controller.cluster.raft.persisted.DeleteEntries;
85 import org.opendaylight.controller.cluster.raft.persisted.EmptyState;
86 import org.opendaylight.controller.cluster.raft.persisted.ServerConfigurationPayload;
87 import org.opendaylight.controller.cluster.raft.persisted.ServerInfo;
88 import org.opendaylight.controller.cluster.raft.persisted.SimpleReplicatedLogEntry;
89 import org.opendaylight.controller.cluster.raft.persisted.Snapshot;
90 import org.opendaylight.controller.cluster.raft.persisted.UpdateElectionTerm;
91 import org.opendaylight.controller.cluster.raft.policy.DisableElectionsRaftPolicy;
92 import org.opendaylight.controller.cluster.raft.utils.InMemoryJournal;
93 import org.opendaylight.controller.cluster.raft.utils.InMemorySnapshotStore;
94 import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
95 import org.opendaylight.yangtools.concepts.Identifier;
96 import org.slf4j.Logger;
97 import org.slf4j.LoggerFactory;
98 import scala.concurrent.duration.FiniteDuration;
100 public class RaftActorTest extends AbstractActorTest {
102 static final Logger TEST_LOG = LoggerFactory.getLogger(RaftActorTest.class);
104 private TestActorFactory factory;
107 public void setUp() {
108 factory = new TestActorFactory(getSystem());
112 public void tearDown() {
114 InMemoryJournal.clear();
115 InMemorySnapshotStore.clear();
119 public void testConstruction() {
120 new RaftActorTestKit(getSystem(), "testConstruction").waitUntilLeader();
124 public void testFindLeaderWhenLeaderIsSelf() {
125 RaftActorTestKit kit = new RaftActorTestKit(getSystem(), "testFindLeader");
126 kit.waitUntilLeader();
131 public void testRaftActorRecoveryWithPersistenceEnabled() {
132 TEST_LOG.info("testRaftActorRecoveryWithPersistenceEnabled starting");
134 TestKit kit = new TestKit(getSystem());
135 String persistenceId = factory.generateActorId("follower-");
137 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
139 // Set the heartbeat interval high to essentially disable election otherwise the test
140 // may fail if the actor is switched to Leader and the commitIndex is set to the last
142 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
144 ImmutableMap<String, String> peerAddresses = ImmutableMap.<String, String>builder()
145 .put("member1", "address").build();
146 ActorRef followerActor = factory.createActor(MockRaftActor.props(persistenceId,
147 peerAddresses, config), persistenceId);
149 kit.watch(followerActor);
151 List<ReplicatedLogEntry> snapshotUnappliedEntries = new ArrayList<>();
152 ReplicatedLogEntry entry1 = new SimpleReplicatedLogEntry(4, 1, new MockRaftActorContext.MockPayload("E"));
153 snapshotUnappliedEntries.add(entry1);
155 int lastAppliedDuringSnapshotCapture = 3;
156 int lastIndexDuringSnapshotCapture = 4;
158 // 4 messages as part of snapshot, which are applied to state
159 MockSnapshotState snapshotState = new MockSnapshotState(Arrays.asList(
160 new MockRaftActorContext.MockPayload("A"),
161 new MockRaftActorContext.MockPayload("B"),
162 new MockRaftActorContext.MockPayload("C"),
163 new MockRaftActorContext.MockPayload("D")));
165 Snapshot snapshot = Snapshot.create(snapshotState, snapshotUnappliedEntries, lastIndexDuringSnapshotCapture, 1,
166 lastAppliedDuringSnapshotCapture, 1, -1, null, null);
167 InMemorySnapshotStore.addSnapshot(persistenceId, snapshot);
169 // add more entries after snapshot is taken
170 List<ReplicatedLogEntry> entries = new ArrayList<>();
171 ReplicatedLogEntry entry2 = new SimpleReplicatedLogEntry(5, 1, new MockRaftActorContext.MockPayload("F", 2));
172 ReplicatedLogEntry entry3 = new SimpleReplicatedLogEntry(6, 1, new MockRaftActorContext.MockPayload("G", 3));
173 ReplicatedLogEntry entry4 = new SimpleReplicatedLogEntry(7, 1, new MockRaftActorContext.MockPayload("H", 4));
178 final int lastAppliedToState = 5;
179 final int lastIndex = 7;
181 InMemoryJournal.addEntry(persistenceId, 5, entry2);
182 // 2 entries are applied to state besides the 4 entries in snapshot
183 InMemoryJournal.addEntry(persistenceId, 6, new ApplyJournalEntries(lastAppliedToState));
184 InMemoryJournal.addEntry(persistenceId, 7, entry3);
185 InMemoryJournal.addEntry(persistenceId, 8, entry4);
188 followerActor.tell(PoisonPill.getInstance(), null);
189 kit.expectMsgClass(Duration.ofSeconds(5), Terminated.class);
191 kit.unwatch(followerActor);
193 //reinstate the actor
194 TestActorRef<MockRaftActor> ref = factory.createTestActor(
195 MockRaftActor.props(persistenceId, peerAddresses, config));
197 MockRaftActor mockRaftActor = ref.underlyingActor();
199 mockRaftActor.waitForRecoveryComplete();
201 RaftActorContext context = mockRaftActor.getRaftActorContext();
202 assertEquals("Journal log size", snapshotUnappliedEntries.size() + entries.size(),
203 context.getReplicatedLog().size());
204 assertEquals("Journal data size", 10, context.getReplicatedLog().dataSize());
205 assertEquals("Last index", lastIndex, context.getReplicatedLog().lastIndex());
206 assertEquals("Last applied", lastAppliedToState, context.getLastApplied());
207 assertEquals("Commit index", lastAppliedToState, context.getCommitIndex());
208 assertEquals("Recovered state size", 6, mockRaftActor.getState().size());
210 mockRaftActor.waitForInitializeBehaviorComplete();
212 assertEquals("getRaftState", RaftState.Follower, mockRaftActor.getRaftState());
214 TEST_LOG.info("testRaftActorRecoveryWithPersistenceEnabled ending");
218 public void testRaftActorRecoveryWithPersistenceDisabled() {
219 String persistenceId = factory.generateActorId("follower-");
221 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
223 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
225 TestActorRef<MockRaftActor> ref = factory.createTestActor(MockRaftActor.props(persistenceId,
226 ImmutableMap.<String, String>builder().put("member1", "address").build(),
227 config, createProvider()), persistenceId);
229 MockRaftActor mockRaftActor = ref.underlyingActor();
231 mockRaftActor.waitForRecoveryComplete();
233 mockRaftActor.waitForInitializeBehaviorComplete();
235 assertEquals("getRaftState", RaftState.Follower, mockRaftActor.getRaftState());
239 public void testUpdateElectionTermPersistedWithPersistenceDisabled() {
240 final TestKit kit = new TestKit(getSystem());
241 String persistenceId = factory.generateActorId("follower-");
242 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
243 config.setHeartBeatInterval(new FiniteDuration(100, TimeUnit.MILLISECONDS));
244 config.setElectionTimeoutFactor(1);
246 InMemoryJournal.addWriteMessagesCompleteLatch(persistenceId, 1);
248 TestActorRef<MockRaftActor> ref = factory.createTestActor(MockRaftActor.props(persistenceId,
249 ImmutableMap.<String, String>builder().put("member1", "address").build(),
250 config, createProvider())
251 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
253 InMemoryJournal.waitForWriteMessagesComplete(persistenceId);
254 List<UpdateElectionTerm> entries = InMemoryJournal.get(persistenceId, UpdateElectionTerm.class);
255 assertEquals("UpdateElectionTerm entries", 1, entries.size());
256 final UpdateElectionTerm updateEntry = entries.get(0);
258 factory.killActor(ref, kit);
260 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
261 ref = factory.createTestActor(MockRaftActor.props(persistenceId,
262 ImmutableMap.<String, String>builder().put("member1", "address").build(), config,
263 createProvider()).withDispatcher(Dispatchers.DefaultDispatcherId()),
264 factory.generateActorId("follower-"));
266 MockRaftActor actor = ref.underlyingActor();
267 actor.waitForRecoveryComplete();
269 RaftActorContext newContext = actor.getRaftActorContext();
270 assertEquals("electionTerm", updateEntry.getCurrentTerm(),
271 newContext.getTermInformation().getCurrentTerm());
272 assertEquals("votedFor", updateEntry.getVotedFor(), newContext.getTermInformation().getVotedFor());
274 entries = InMemoryJournal.get(persistenceId, UpdateElectionTerm.class);
275 assertEquals("UpdateElectionTerm entries", 1, entries.size());
279 public void testRaftActorForwardsToRaftActorRecoverySupport() {
280 String persistenceId = factory.generateActorId("leader-");
282 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
284 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
286 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
287 Collections.<String, String>emptyMap(), config), persistenceId);
289 MockRaftActor mockRaftActor = mockActorRef.underlyingActor();
291 // Wait for akka's recovery to complete so it doesn't interfere.
292 mockRaftActor.waitForRecoveryComplete();
294 RaftActorRecoverySupport mockSupport = mock(RaftActorRecoverySupport.class);
295 mockRaftActor.setRaftActorRecoverySupport(mockSupport);
297 Snapshot snapshot = Snapshot.create(ByteState.of(new byte[]{1}),
298 Collections.<ReplicatedLogEntry>emptyList(), 3, 1, 3, 1, -1, null, null);
299 SnapshotOffer snapshotOffer = new SnapshotOffer(new SnapshotMetadata("test", 6, 12345), snapshot);
300 mockRaftActor.handleRecover(snapshotOffer);
302 ReplicatedLogEntry logEntry = new SimpleReplicatedLogEntry(1, 1, new MockRaftActorContext.MockPayload("1", 5));
303 mockRaftActor.handleRecover(logEntry);
305 ApplyJournalEntries applyJournalEntries = new ApplyJournalEntries(2);
306 mockRaftActor.handleRecover(applyJournalEntries);
308 DeleteEntries deleteEntries = new DeleteEntries(1);
309 mockRaftActor.handleRecover(deleteEntries);
311 UpdateElectionTerm updateElectionTerm = new UpdateElectionTerm(5, "member2");
312 mockRaftActor.handleRecover(updateElectionTerm);
314 verify(mockSupport).handleRecoveryMessage(same(snapshotOffer), any(PersistentDataProvider.class));
315 verify(mockSupport).handleRecoveryMessage(same(logEntry), any(PersistentDataProvider.class));
316 verify(mockSupport).handleRecoveryMessage(same(applyJournalEntries), any(PersistentDataProvider.class));
317 verify(mockSupport).handleRecoveryMessage(same(deleteEntries), any(PersistentDataProvider.class));
318 verify(mockSupport).handleRecoveryMessage(same(updateElectionTerm), any(PersistentDataProvider.class));
322 public void testRaftActorForwardsToRaftActorSnapshotMessageSupport() {
323 String persistenceId = factory.generateActorId("leader-");
325 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
327 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
329 RaftActorSnapshotMessageSupport mockSupport = mock(RaftActorSnapshotMessageSupport.class);
331 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
332 .config(config).snapshotMessageSupport(mockSupport).props());
334 MockRaftActor mockRaftActor = mockActorRef.underlyingActor();
336 // Wait for akka's recovery to complete so it doesn't interfere.
337 mockRaftActor.waitForRecoveryComplete();
339 ApplySnapshot applySnapshot = new ApplySnapshot(mock(Snapshot.class));
340 doReturn(true).when(mockSupport).handleSnapshotMessage(same(applySnapshot), any(ActorRef.class));
341 mockRaftActor.handleCommand(applySnapshot);
343 CaptureSnapshotReply captureSnapshotReply = new CaptureSnapshotReply(ByteState.empty(),
344 java.util.Optional.empty());
345 doReturn(true).when(mockSupport).handleSnapshotMessage(same(captureSnapshotReply), any(ActorRef.class));
346 mockRaftActor.handleCommand(captureSnapshotReply);
348 SaveSnapshotSuccess saveSnapshotSuccess = new SaveSnapshotSuccess(new SnapshotMetadata("", 0L, 0L));
349 doReturn(true).when(mockSupport).handleSnapshotMessage(same(saveSnapshotSuccess), any(ActorRef.class));
350 mockRaftActor.handleCommand(saveSnapshotSuccess);
352 SaveSnapshotFailure saveSnapshotFailure = new SaveSnapshotFailure(new SnapshotMetadata("", 0L, 0L),
354 doReturn(true).when(mockSupport).handleSnapshotMessage(same(saveSnapshotFailure), any(ActorRef.class));
355 mockRaftActor.handleCommand(saveSnapshotFailure);
357 doReturn(true).when(mockSupport).handleSnapshotMessage(same(RaftActorSnapshotMessageSupport.COMMIT_SNAPSHOT),
358 any(ActorRef.class));
359 mockRaftActor.handleCommand(RaftActorSnapshotMessageSupport.COMMIT_SNAPSHOT);
361 doReturn(true).when(mockSupport).handleSnapshotMessage(same(GetSnapshot.INSTANCE), any(ActorRef.class));
362 mockRaftActor.handleCommand(GetSnapshot.INSTANCE);
364 verify(mockSupport).handleSnapshotMessage(same(applySnapshot), any(ActorRef.class));
365 verify(mockSupport).handleSnapshotMessage(same(captureSnapshotReply), any(ActorRef.class));
366 verify(mockSupport).handleSnapshotMessage(same(saveSnapshotSuccess), any(ActorRef.class));
367 verify(mockSupport).handleSnapshotMessage(same(saveSnapshotFailure), any(ActorRef.class));
368 verify(mockSupport).handleSnapshotMessage(same(RaftActorSnapshotMessageSupport.COMMIT_SNAPSHOT),
369 any(ActorRef.class));
370 verify(mockSupport).handleSnapshotMessage(same(GetSnapshot.INSTANCE), any(ActorRef.class));
373 @SuppressWarnings("unchecked")
375 public void testApplyJournalEntriesCallsDataPersistence() throws Exception {
376 String persistenceId = factory.generateActorId("leader-");
378 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
380 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
382 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
384 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
385 Collections.<String, String>emptyMap(), config, dataPersistenceProvider), persistenceId);
387 MockRaftActor mockRaftActor = mockActorRef.underlyingActor();
389 mockRaftActor.waitForInitializeBehaviorComplete();
391 mockRaftActor.waitUntilLeader();
393 mockRaftActor.onReceiveCommand(new ApplyJournalEntries(10));
395 verify(dataPersistenceProvider).persistAsync(any(ApplyJournalEntries.class), any(Procedure.class));
399 public void testApplyState() {
400 String persistenceId = factory.generateActorId("leader-");
402 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
404 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
406 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
408 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
409 Collections.<String, String>emptyMap(), config, dataPersistenceProvider), persistenceId);
411 MockRaftActor mockRaftActor = mockActorRef.underlyingActor();
413 mockRaftActor.waitForInitializeBehaviorComplete();
415 ReplicatedLogEntry entry = new SimpleReplicatedLogEntry(5, 1, new MockRaftActorContext.MockPayload("F"));
417 final Identifier id = new MockIdentifier("apply-state");
418 mockRaftActor.getRaftActorContext().getApplyStateConsumer().accept(new ApplyState(mockActorRef, id, entry));
420 verify(mockRaftActor.actorDelegate).applyState(eq(mockActorRef), eq(id), any());
424 public void testRaftRoleChangeNotifierWhenRaftActorHasNoPeers() throws Exception {
425 ActorRef notifierActor = factory.createActor(MessageCollectorActor.props());
426 MessageCollectorActor.waitUntilReady(notifierActor);
428 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
429 long heartBeatInterval = 100;
430 config.setHeartBeatInterval(FiniteDuration.create(heartBeatInterval, TimeUnit.MILLISECONDS));
431 config.setElectionTimeoutFactor(20);
433 String persistenceId = factory.generateActorId("notifier-");
435 final TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder()
436 .id(persistenceId).config(config).roleChangeNotifier(notifierActor).dataPersistenceProvider(
437 createProvider()).props().withDispatcher(Dispatchers.DefaultDispatcherId()),
440 List<RoleChanged> matches = MessageCollectorActor.expectMatching(notifierActor, RoleChanged.class, 3);
443 // check if the notifier got a role change from null to Follower
444 RoleChanged raftRoleChanged = matches.get(0);
445 assertEquals(persistenceId, raftRoleChanged.getMemberId());
446 assertNull(raftRoleChanged.getOldRole());
447 assertEquals(RaftState.Follower.name(), raftRoleChanged.getNewRole());
449 // check if the notifier got a role change from Follower to Candidate
450 raftRoleChanged = matches.get(1);
451 assertEquals(persistenceId, raftRoleChanged.getMemberId());
452 assertEquals(RaftState.Follower.name(), raftRoleChanged.getOldRole());
453 assertEquals(RaftState.Candidate.name(), raftRoleChanged.getNewRole());
455 // check if the notifier got a role change from Candidate to Leader
456 raftRoleChanged = matches.get(2);
457 assertEquals(persistenceId, raftRoleChanged.getMemberId());
458 assertEquals(RaftState.Candidate.name(), raftRoleChanged.getOldRole());
459 assertEquals(RaftState.Leader.name(), raftRoleChanged.getNewRole());
461 LeaderStateChanged leaderStateChange = MessageCollectorActor.expectFirstMatching(
462 notifierActor, LeaderStateChanged.class);
464 assertEquals(raftRoleChanged.getMemberId(), leaderStateChange.getLeaderId());
465 assertEquals(MockRaftActor.PAYLOAD_VERSION, leaderStateChange.getLeaderPayloadVersion());
467 MessageCollectorActor.clearMessages(notifierActor);
469 MockRaftActor raftActor = raftActorRef.underlyingActor();
470 final String newLeaderId = "new-leader";
471 final short newLeaderVersion = 6;
472 Follower follower = new Follower(raftActor.getRaftActorContext()) {
474 public RaftActorBehavior handleMessage(final ActorRef sender, final Object message) {
475 setLeaderId(newLeaderId);
476 setLeaderPayloadVersion(newLeaderVersion);
481 raftActor.newBehavior(follower);
483 leaderStateChange = MessageCollectorActor.expectFirstMatching(notifierActor, LeaderStateChanged.class);
484 assertEquals(persistenceId, leaderStateChange.getMemberId());
485 assertEquals(null, leaderStateChange.getLeaderId());
487 raftRoleChanged = MessageCollectorActor.expectFirstMatching(notifierActor, RoleChanged.class);
488 assertEquals(RaftState.Leader.name(), raftRoleChanged.getOldRole());
489 assertEquals(RaftState.Follower.name(), raftRoleChanged.getNewRole());
491 MessageCollectorActor.clearMessages(notifierActor);
493 raftActor.handleCommand("any");
495 leaderStateChange = MessageCollectorActor.expectFirstMatching(notifierActor, LeaderStateChanged.class);
496 assertEquals(persistenceId, leaderStateChange.getMemberId());
497 assertEquals(newLeaderId, leaderStateChange.getLeaderId());
498 assertEquals(newLeaderVersion, leaderStateChange.getLeaderPayloadVersion());
500 MessageCollectorActor.clearMessages(notifierActor);
502 raftActor.handleCommand("any");
504 Uninterruptibles.sleepUninterruptibly(505, TimeUnit.MILLISECONDS);
505 leaderStateChange = MessageCollectorActor.getFirstMatching(notifierActor, LeaderStateChanged.class);
506 assertNull(leaderStateChange);
510 public void testRaftRoleChangeNotifierWhenRaftActorHasPeers() throws Exception {
511 ActorRef notifierActor = factory.createActor(MessageCollectorActor.props());
512 MessageCollectorActor.waitUntilReady(notifierActor);
514 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
515 long heartBeatInterval = 100;
516 config.setHeartBeatInterval(FiniteDuration.create(heartBeatInterval, TimeUnit.MILLISECONDS));
517 config.setElectionTimeoutFactor(1);
519 String persistenceId = factory.generateActorId("notifier-");
521 factory.createActor(MockRaftActor.builder().id(persistenceId)
522 .peerAddresses(ImmutableMap.of("leader", "fake/path"))
523 .config(config).roleChangeNotifier(notifierActor).props());
525 List<RoleChanged> matches = null;
526 for (int i = 0; i < 5000 / heartBeatInterval; i++) {
527 matches = MessageCollectorActor.getAllMatching(notifierActor, RoleChanged.class);
528 assertNotNull(matches);
529 if (matches.size() == 3) {
532 Uninterruptibles.sleepUninterruptibly(heartBeatInterval, TimeUnit.MILLISECONDS);
535 assertNotNull(matches);
536 assertEquals(2, matches.size());
538 // check if the notifier got a role change from null to Follower
539 RoleChanged raftRoleChanged = matches.get(0);
540 assertEquals(persistenceId, raftRoleChanged.getMemberId());
541 assertNull(raftRoleChanged.getOldRole());
542 assertEquals(RaftState.Follower.name(), raftRoleChanged.getNewRole());
544 // check if the notifier got a role change from Follower to Candidate
545 raftRoleChanged = matches.get(1);
546 assertEquals(persistenceId, raftRoleChanged.getMemberId());
547 assertEquals(RaftState.Follower.name(), raftRoleChanged.getOldRole());
548 assertEquals(RaftState.Candidate.name(), raftRoleChanged.getNewRole());
552 public void testFakeSnapshotsForLeaderWithInRealSnapshots() throws Exception {
553 final String persistenceId = factory.generateActorId("leader-");
554 final String follower1Id = factory.generateActorId("follower-");
556 ActorRef followerActor1 = factory.createActor(MessageCollectorActor.props());
558 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
559 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
560 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
562 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
564 Map<String, String> peerAddresses = new HashMap<>();
565 peerAddresses.put(follower1Id, followerActor1.path().toString());
567 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
568 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
570 MockRaftActor leaderActor = mockActorRef.underlyingActor();
572 leaderActor.getRaftActorContext().setCommitIndex(4);
573 leaderActor.getRaftActorContext().setLastApplied(4);
574 leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
576 leaderActor.waitForInitializeBehaviorComplete();
578 // create 8 entries in the log - 0 to 4 are applied and will get picked up as part of the capture snapshot
580 Leader leader = new Leader(leaderActor.getRaftActorContext());
581 leaderActor.setCurrentBehavior(leader);
582 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
584 MockRaftActorContext.MockReplicatedLogBuilder logBuilder = new MockRaftActorContext.MockReplicatedLogBuilder();
585 leaderActor.getRaftActorContext().setReplicatedLog(logBuilder.createEntries(0, 8, 1).build());
587 assertEquals(8, leaderActor.getReplicatedLog().size());
589 leaderActor.getRaftActorContext().getSnapshotManager().capture(
590 new SimpleReplicatedLogEntry(6, 1, new MockRaftActorContext.MockPayload("x")), 4);
592 verify(leaderActor.snapshotCohortDelegate).createSnapshot(any(), any());
594 assertEquals(8, leaderActor.getReplicatedLog().size());
596 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
597 //fake snapshot on index 5
598 leaderActor.onReceiveCommand(new AppendEntriesReply(follower1Id, 1, true, 5, 1, (short)0));
600 assertEquals(8, leaderActor.getReplicatedLog().size());
602 //fake snapshot on index 6
603 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
604 leaderActor.onReceiveCommand(new AppendEntriesReply(follower1Id, 1, true, 6, 1, (short)0));
605 assertEquals(8, leaderActor.getReplicatedLog().size());
607 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
609 assertEquals(8, leaderActor.getReplicatedLog().size());
611 MockSnapshotState snapshotState = new MockSnapshotState(Arrays.asList(
612 new MockRaftActorContext.MockPayload("foo-0"),
613 new MockRaftActorContext.MockPayload("foo-1"),
614 new MockRaftActorContext.MockPayload("foo-2"),
615 new MockRaftActorContext.MockPayload("foo-3"),
616 new MockRaftActorContext.MockPayload("foo-4")));
618 leaderActor.getRaftActorContext().getSnapshotManager().persist(snapshotState, java.util.Optional.empty(),
619 Runtime.getRuntime().totalMemory());
621 assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
623 // The commit is needed to complete the snapshot creation process
624 leaderActor.getRaftActorContext().getSnapshotManager().commit(-1, -1);
626 // capture snapshot reply should remove the snapshotted entries only
627 assertEquals(3, leaderActor.getReplicatedLog().size());
628 assertEquals(7, leaderActor.getReplicatedLog().lastIndex());
630 // add another non-replicated entry
631 leaderActor.getReplicatedLog().append(
632 new SimpleReplicatedLogEntry(8, 1, new MockRaftActorContext.MockPayload("foo-8")));
634 //fake snapshot on index 7, since lastApplied = 7 , we would keep the last applied
635 leaderActor.onReceiveCommand(new AppendEntriesReply(follower1Id, 1, true, 7, 1, (short)0));
636 assertEquals(2, leaderActor.getReplicatedLog().size());
637 assertEquals(8, leaderActor.getReplicatedLog().lastIndex());
641 public void testFakeSnapshotsForFollowerWithInRealSnapshots() throws Exception {
642 final String persistenceId = factory.generateActorId("follower-");
643 final String leaderId = factory.generateActorId("leader-");
645 ActorRef leaderActor1 = factory.createActor(MessageCollectorActor.props());
647 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
648 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
649 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
651 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
653 Map<String, String> peerAddresses = new HashMap<>();
654 peerAddresses.put(leaderId, leaderActor1.path().toString());
656 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
657 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
659 MockRaftActor followerActor = mockActorRef.underlyingActor();
660 followerActor.getRaftActorContext().setCommitIndex(4);
661 followerActor.getRaftActorContext().setLastApplied(4);
662 followerActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
664 followerActor.waitForInitializeBehaviorComplete();
667 Follower follower = new Follower(followerActor.getRaftActorContext());
668 followerActor.setCurrentBehavior(follower);
669 assertEquals(RaftState.Follower, followerActor.getCurrentBehavior().state());
671 // create 6 entries in the log - 0 to 4 are applied and will get picked up as part of the capture snapshot
672 MockRaftActorContext.MockReplicatedLogBuilder logBuilder = new MockRaftActorContext.MockReplicatedLogBuilder();
673 followerActor.getRaftActorContext().setReplicatedLog(logBuilder.createEntries(0, 6, 1).build());
675 // log has indices 0-5
676 assertEquals(6, followerActor.getReplicatedLog().size());
679 followerActor.getRaftActorContext().getSnapshotManager().capture(
680 new SimpleReplicatedLogEntry(5, 1, new MockRaftActorContext.MockPayload("D")), 4);
682 verify(followerActor.snapshotCohortDelegate).createSnapshot(any(), any());
684 assertEquals(6, followerActor.getReplicatedLog().size());
686 //fake snapshot on index 6
687 List<ReplicatedLogEntry> entries = Arrays.asList(
688 (ReplicatedLogEntry) new SimpleReplicatedLogEntry(6, 1, new MockRaftActorContext.MockPayload("foo-6")));
689 followerActor.onReceiveCommand(new AppendEntries(1, leaderId, 5, 1, entries, 5, 5, (short)0));
690 assertEquals(7, followerActor.getReplicatedLog().size());
692 //fake snapshot on index 7
693 assertEquals(RaftState.Follower, followerActor.getCurrentBehavior().state());
695 entries = Arrays.asList((ReplicatedLogEntry) new SimpleReplicatedLogEntry(7, 1,
696 new MockRaftActorContext.MockPayload("foo-7")));
697 followerActor.onReceiveCommand(new AppendEntries(1, leaderId, 6, 1, entries, 6, 6, (short) 0));
698 assertEquals(8, followerActor.getReplicatedLog().size());
700 assertEquals(RaftState.Follower, followerActor.getCurrentBehavior().state());
703 ByteString snapshotBytes = fromObject(Arrays.asList(
704 new MockRaftActorContext.MockPayload("foo-0"),
705 new MockRaftActorContext.MockPayload("foo-1"),
706 new MockRaftActorContext.MockPayload("foo-2"),
707 new MockRaftActorContext.MockPayload("foo-3"),
708 new MockRaftActorContext.MockPayload("foo-4")));
709 followerActor.onReceiveCommand(new CaptureSnapshotReply(ByteState.of(snapshotBytes.toByteArray()),
710 java.util.Optional.empty()));
711 assertTrue(followerActor.getRaftActorContext().getSnapshotManager().isCapturing());
713 // The commit is needed to complete the snapshot creation process
714 followerActor.getRaftActorContext().getSnapshotManager().commit(-1, -1);
716 // capture snapshot reply should remove the snapshotted entries only till replicatedToAllIndex
717 assertEquals(3, followerActor.getReplicatedLog().size()); //indexes 5,6,7 left in the log
718 assertEquals(7, followerActor.getReplicatedLog().lastIndex());
720 entries = Arrays.asList((ReplicatedLogEntry) new SimpleReplicatedLogEntry(8, 1,
721 new MockRaftActorContext.MockPayload("foo-7")));
722 // send an additional entry 8 with leaderCommit = 7
723 followerActor.onReceiveCommand(new AppendEntries(1, leaderId, 7, 1, entries, 7, 7, (short) 0));
725 // 7 and 8, as lastapplied is 7
726 assertEquals(2, followerActor.getReplicatedLog().size());
730 public void testFakeSnapshotsForLeaderWithInInitiateSnapshots() throws Exception {
731 final String persistenceId = factory.generateActorId("leader-");
732 final String follower1Id = factory.generateActorId("follower-");
733 final String follower2Id = factory.generateActorId("follower-");
735 final ActorRef followerActor1 = factory.createActor(MessageCollectorActor.props(), follower1Id);
736 final ActorRef followerActor2 = factory.createActor(MessageCollectorActor.props(), follower2Id);
738 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
739 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
740 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
742 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
744 Map<String, String> peerAddresses = new HashMap<>();
745 peerAddresses.put(follower1Id, followerActor1.path().toString());
746 peerAddresses.put(follower2Id, followerActor2.path().toString());
748 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
749 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
751 MockRaftActor leaderActor = mockActorRef.underlyingActor();
752 leaderActor.getRaftActorContext().setCommitIndex(9);
753 leaderActor.getRaftActorContext().setLastApplied(9);
754 leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
756 leaderActor.waitForInitializeBehaviorComplete();
758 Leader leader = new Leader(leaderActor.getRaftActorContext());
759 leaderActor.setCurrentBehavior(leader);
760 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
762 // create 5 entries in the log
763 MockRaftActorContext.MockReplicatedLogBuilder logBuilder = new MockRaftActorContext.MockReplicatedLogBuilder();
764 leaderActor.getRaftActorContext().setReplicatedLog(logBuilder.createEntries(5, 10, 1).build());
766 //set the snapshot index to 4 , 0 to 4 are snapshotted
767 leaderActor.getRaftActorContext().getReplicatedLog().setSnapshotIndex(4);
768 //setting replicatedToAllIndex = 9, for the log to clear
769 leader.setReplicatedToAllIndex(9);
770 assertEquals(5, leaderActor.getReplicatedLog().size());
771 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
773 leaderActor.onReceiveCommand(new AppendEntriesReply(follower1Id, 1, true, 9, 1, (short) 0));
774 assertEquals(5, leaderActor.getReplicatedLog().size());
775 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
777 // set the 2nd follower nextIndex to 1 which has been snapshotted
778 leaderActor.onReceiveCommand(new AppendEntriesReply(follower2Id, 1, true, 0, 1, (short)0));
779 assertEquals(5, leaderActor.getReplicatedLog().size());
780 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
782 // simulate a real snapshot
783 leaderActor.onReceiveCommand(SendHeartBeat.INSTANCE);
784 assertEquals(5, leaderActor.getReplicatedLog().size());
785 assertEquals(String.format("expected to be Leader but was %s. Current Leader = %s ",
786 leaderActor.getCurrentBehavior().state(), leaderActor.getLeaderId()),
787 RaftState.Leader, leaderActor.getCurrentBehavior().state());
790 //reply from a slow follower does not initiate a fake snapshot
791 leaderActor.onReceiveCommand(new AppendEntriesReply(follower2Id, 1, true, 9, 1, (short)0));
792 assertEquals("Fake snapshot should not happen when Initiate is in progress", 5,
793 leaderActor.getReplicatedLog().size());
795 ByteString snapshotBytes = fromObject(Arrays.asList(
796 new MockRaftActorContext.MockPayload("foo-0"),
797 new MockRaftActorContext.MockPayload("foo-1"),
798 new MockRaftActorContext.MockPayload("foo-2"),
799 new MockRaftActorContext.MockPayload("foo-3"),
800 new MockRaftActorContext.MockPayload("foo-4")));
801 leaderActor.onReceiveCommand(new CaptureSnapshotReply(ByteState.of(snapshotBytes.toByteArray()),
802 java.util.Optional.empty()));
803 assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
805 assertEquals("Real snapshot didn't clear the log till replicatedToAllIndex", 0,
806 leaderActor.getReplicatedLog().size());
808 //reply from a slow follower after should not raise errors
809 leaderActor.onReceiveCommand(new AppendEntriesReply(follower2Id, 1, true, 5, 1, (short) 0));
810 assertEquals(0, leaderActor.getReplicatedLog().size());
814 public void testRealSnapshotWhenReplicatedToAllIndexMinusOne() throws Exception {
815 String persistenceId = factory.generateActorId("leader-");
816 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
817 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
818 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
819 config.setSnapshotBatchCount(5);
821 DataPersistenceProvider dataPersistenceProvider = createProvider();
823 Map<String, String> peerAddresses = ImmutableMap.<String, String>builder().put("member1", "address").build();
825 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
826 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
828 MockRaftActor leaderActor = mockActorRef.underlyingActor();
829 leaderActor.getRaftActorContext().setCommitIndex(3);
830 leaderActor.getRaftActorContext().setLastApplied(3);
831 leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
833 leaderActor.waitForInitializeBehaviorComplete();
834 for (int i = 0; i < 4; i++) {
835 leaderActor.getReplicatedLog().append(new SimpleReplicatedLogEntry(i, 1,
836 new MockRaftActorContext.MockPayload("A")));
839 Leader leader = new Leader(leaderActor.getRaftActorContext());
840 leaderActor.setCurrentBehavior(leader);
841 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
843 // Simulate an install snaphost to a follower.
844 leaderActor.getRaftActorContext().getSnapshotManager().captureToInstall(
845 leaderActor.getReplicatedLog().last(), -1, "member1");
847 // Now send a CaptureSnapshotReply
848 mockActorRef.tell(new CaptureSnapshotReply(ByteState.of(fromObject("foo").toByteArray()),
849 java.util.Optional.empty()), mockActorRef);
851 // Trimming log in this scenario is a no-op
852 assertEquals(-1, leaderActor.getReplicatedLog().getSnapshotIndex());
853 assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
854 assertEquals(-1, leader.getReplicatedToAllIndex());
858 public void testRealSnapshotWhenReplicatedToAllIndexNotInReplicatedLog() throws Exception {
859 String persistenceId = factory.generateActorId("leader-");
860 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
861 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
862 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
863 config.setSnapshotBatchCount(5);
865 DataPersistenceProvider dataPersistenceProvider = createProvider();
867 Map<String, String> peerAddresses = ImmutableMap.<String, String>builder().put("member1", "address").build();
869 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
870 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
872 MockRaftActor leaderActor = mockActorRef.underlyingActor();
873 leaderActor.getRaftActorContext().setCommitIndex(3);
874 leaderActor.getRaftActorContext().setLastApplied(3);
875 leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
876 leaderActor.getReplicatedLog().setSnapshotIndex(3);
878 leaderActor.waitForInitializeBehaviorComplete();
879 Leader leader = new Leader(leaderActor.getRaftActorContext());
880 leaderActor.setCurrentBehavior(leader);
881 leader.setReplicatedToAllIndex(3);
882 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
884 // Persist another entry (this will cause a CaptureSnapshot to be triggered
885 leaderActor.persistData(mockActorRef, new MockIdentifier("x"),
886 new MockRaftActorContext.MockPayload("duh"), false);
888 // Now send a CaptureSnapshotReply
889 mockActorRef.tell(new CaptureSnapshotReply(ByteState.of(fromObject("foo").toByteArray()),
890 java.util.Optional.empty()), mockActorRef);
892 // Trimming log in this scenario is a no-op
893 assertEquals(3, leaderActor.getReplicatedLog().getSnapshotIndex());
894 assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
895 assertEquals(3, leader.getReplicatedToAllIndex());
898 private static DataPersistenceProvider createProvider() {
899 return new NonPersistentDataProvider(Runnable::run);
903 public void testSwitchBehavior() {
904 String persistenceId = factory.generateActorId("leader-");
905 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
906 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
907 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
908 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
909 config.setSnapshotBatchCount(5);
911 DataPersistenceProvider dataPersistenceProvider = createProvider();
913 Map<String, String> peerAddresses = ImmutableMap.<String, String>builder().build();
915 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
916 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
918 MockRaftActor leaderActor = mockActorRef.underlyingActor();
920 leaderActor.waitForRecoveryComplete();
922 leaderActor.handleCommand(new SwitchBehavior(RaftState.Follower, 100));
924 assertEquals(100, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
925 assertEquals(RaftState.Follower, leaderActor.getCurrentBehavior().state());
927 leaderActor.handleCommand(new SwitchBehavior(RaftState.Leader, 110));
929 assertEquals(110, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
930 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
932 leaderActor.handleCommand(new SwitchBehavior(RaftState.Candidate, 125));
934 assertEquals(110, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
935 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
937 leaderActor.handleCommand(new SwitchBehavior(RaftState.IsolatedLeader, 125));
939 assertEquals(110, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
940 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
943 public static ByteString fromObject(final Object snapshot) throws Exception {
944 ByteArrayOutputStream bos = null;
945 ObjectOutputStream os = null;
947 bos = new ByteArrayOutputStream();
948 os = new ObjectOutputStream(bos);
949 os.writeObject(snapshot);
950 byte[] snapshotBytes = bos.toByteArray();
951 return ByteString.copyFrom(snapshotBytes);
964 public void testUpdateConfigParam() {
965 DefaultConfigParamsImpl emptyConfig = new DefaultConfigParamsImpl();
966 String persistenceId = factory.generateActorId("follower-");
967 ImmutableMap<String, String> peerAddresses =
968 ImmutableMap.<String, String>builder().put("member1", "address").build();
969 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
971 TestActorRef<MockRaftActor> actorRef = factory.createTestActor(
972 MockRaftActor.props(persistenceId, peerAddresses, emptyConfig, dataPersistenceProvider), persistenceId);
973 MockRaftActor mockRaftActor = actorRef.underlyingActor();
974 mockRaftActor.waitForInitializeBehaviorComplete();
976 RaftActorBehavior behavior = mockRaftActor.getCurrentBehavior();
977 mockRaftActor.updateConfigParams(emptyConfig);
978 assertSame("Same Behavior", behavior, mockRaftActor.getCurrentBehavior());
979 assertEquals("Behavior State", RaftState.Follower,
980 mockRaftActor.getCurrentBehavior().state());
982 DefaultConfigParamsImpl disableConfig = new DefaultConfigParamsImpl();
983 disableConfig.setCustomRaftPolicyImplementationClass(
984 "org.opendaylight.controller.cluster.raft.policy.DisableElectionsRaftPolicy");
985 mockRaftActor.updateConfigParams(disableConfig);
986 assertNotSame("Different Behavior", behavior, mockRaftActor.getCurrentBehavior());
987 assertEquals("Behavior State", RaftState.Follower,
988 mockRaftActor.getCurrentBehavior().state());
990 behavior = mockRaftActor.getCurrentBehavior();
991 mockRaftActor.updateConfigParams(disableConfig);
992 assertSame("Same Behavior", behavior, mockRaftActor.getCurrentBehavior());
993 assertEquals("Behavior State", RaftState.Follower,
994 mockRaftActor.getCurrentBehavior().state());
996 DefaultConfigParamsImpl defaultConfig = new DefaultConfigParamsImpl();
997 defaultConfig.setCustomRaftPolicyImplementationClass(
998 "org.opendaylight.controller.cluster.raft.policy.DefaultRaftPolicy");
999 mockRaftActor.updateConfigParams(defaultConfig);
1000 assertNotSame("Different Behavior", behavior, mockRaftActor.getCurrentBehavior());
1001 assertEquals("Behavior State", RaftState.Follower,
1002 mockRaftActor.getCurrentBehavior().state());
1004 behavior = mockRaftActor.getCurrentBehavior();
1005 mockRaftActor.updateConfigParams(defaultConfig);
1006 assertSame("Same Behavior", behavior, mockRaftActor.getCurrentBehavior());
1007 assertEquals("Behavior State", RaftState.Follower,
1008 mockRaftActor.getCurrentBehavior().state());
1012 public void testGetSnapshot() {
1013 TEST_LOG.info("testGetSnapshot starting");
1015 final TestKit kit = new TestKit(getSystem());
1017 String persistenceId = factory.generateActorId("test-actor-");
1018 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1019 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1023 InMemoryJournal.addEntry(persistenceId, seqN++, new UpdateElectionTerm(term, "member-1"));
1024 InMemoryJournal.addEntry(persistenceId, seqN++, new SimpleReplicatedLogEntry(0, term,
1025 new MockRaftActorContext.MockPayload("A")));
1026 InMemoryJournal.addEntry(persistenceId, seqN++, new SimpleReplicatedLogEntry(1, term,
1027 new MockRaftActorContext.MockPayload("B")));
1028 InMemoryJournal.addEntry(persistenceId, seqN++, new ApplyJournalEntries(1));
1029 InMemoryJournal.addEntry(persistenceId, seqN++, new SimpleReplicatedLogEntry(2, term,
1030 new MockRaftActorContext.MockPayload("C")));
1032 TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
1033 ImmutableMap.<String, String>builder().put("member1", "address").build(), config)
1034 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1035 MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1037 mockRaftActor.waitForRecoveryComplete();
1039 mockRaftActor.snapshotCohortDelegate = mock(RaftActorSnapshotCohort.class);
1041 raftActorRef.tell(GetSnapshot.INSTANCE, kit.getRef());
1043 ArgumentCaptor<ActorRef> replyActor = ArgumentCaptor.forClass(ActorRef.class);
1044 verify(mockRaftActor.snapshotCohortDelegate, timeout(5000)).createSnapshot(replyActor.capture(),
1045 eq(java.util.Optional.empty()));
1047 byte[] stateSnapshot = new byte[]{1,2,3};
1048 replyActor.getValue().tell(new CaptureSnapshotReply(ByteState.of(stateSnapshot), java.util.Optional.empty()),
1049 ActorRef.noSender());
1051 GetSnapshotReply reply = kit.expectMsgClass(GetSnapshotReply.class);
1053 assertEquals("getId", persistenceId, reply.getId());
1054 Snapshot replySnapshot = reply.getSnapshot();
1055 assertEquals("getElectionTerm", term, replySnapshot.getElectionTerm());
1056 assertEquals("getElectionVotedFor", "member-1", replySnapshot.getElectionVotedFor());
1057 assertEquals("getLastAppliedIndex", 1L, replySnapshot.getLastAppliedIndex());
1058 assertEquals("getLastAppliedTerm", term, replySnapshot.getLastAppliedTerm());
1059 assertEquals("getLastIndex", 2L, replySnapshot.getLastIndex());
1060 assertEquals("getLastTerm", term, replySnapshot.getLastTerm());
1061 assertEquals("getState", ByteState.of(stateSnapshot), replySnapshot.getState());
1062 assertEquals("getUnAppliedEntries size", 1, replySnapshot.getUnAppliedEntries().size());
1063 assertEquals("UnApplied entry index ", 2L, replySnapshot.getUnAppliedEntries().get(0).getIndex());
1065 // Test with timeout
1067 mockRaftActor.getSnapshotMessageSupport().setSnapshotReplyActorTimeout(
1068 FiniteDuration.create(200, TimeUnit.MILLISECONDS));
1069 reset(mockRaftActor.snapshotCohortDelegate);
1071 raftActorRef.tell(GetSnapshot.INSTANCE, kit.getRef());
1072 Failure failure = kit.expectMsgClass(akka.actor.Status.Failure.class);
1073 assertEquals("Failure cause type", TimeoutException.class, failure.cause().getClass());
1075 mockRaftActor.getSnapshotMessageSupport().setSnapshotReplyActorTimeout(
1076 FiniteDuration.create(30, TimeUnit.SECONDS));
1078 // Test with persistence disabled.
1080 mockRaftActor.setPersistence(false);
1081 reset(mockRaftActor.snapshotCohortDelegate);
1083 raftActorRef.tell(GetSnapshot.INSTANCE, kit.getRef());
1084 reply = kit.expectMsgClass(GetSnapshotReply.class);
1085 verify(mockRaftActor.snapshotCohortDelegate, never()).createSnapshot(any(), any());
1087 assertEquals("getId", persistenceId, reply.getId());
1088 replySnapshot = reply.getSnapshot();
1089 assertEquals("getElectionTerm", term, replySnapshot.getElectionTerm());
1090 assertEquals("getElectionVotedFor", "member-1", replySnapshot.getElectionVotedFor());
1091 assertEquals("getLastAppliedIndex", -1L, replySnapshot.getLastAppliedIndex());
1092 assertEquals("getLastAppliedTerm", -1L, replySnapshot.getLastAppliedTerm());
1093 assertEquals("getLastIndex", -1L, replySnapshot.getLastIndex());
1094 assertEquals("getLastTerm", -1L, replySnapshot.getLastTerm());
1095 assertEquals("getState type", EmptyState.INSTANCE, replySnapshot.getState());
1096 assertEquals("getUnAppliedEntries size", 0, replySnapshot.getUnAppliedEntries().size());
1098 TEST_LOG.info("testGetSnapshot ending");
1102 public void testRestoreFromSnapshot() {
1103 TEST_LOG.info("testRestoreFromSnapshot starting");
1105 String persistenceId = factory.generateActorId("test-actor-");
1106 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1107 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1109 List<ReplicatedLogEntry> snapshotUnappliedEntries = new ArrayList<>();
1110 snapshotUnappliedEntries.add(new SimpleReplicatedLogEntry(4, 1, new MockRaftActorContext.MockPayload("E")));
1112 int snapshotLastApplied = 3;
1113 int snapshotLastIndex = 4;
1115 MockSnapshotState snapshotState = new MockSnapshotState(Arrays.asList(
1116 new MockRaftActorContext.MockPayload("A"),
1117 new MockRaftActorContext.MockPayload("B"),
1118 new MockRaftActorContext.MockPayload("C"),
1119 new MockRaftActorContext.MockPayload("D")));
1121 Snapshot snapshot = Snapshot.create(snapshotState, snapshotUnappliedEntries,
1122 snapshotLastIndex, 1, snapshotLastApplied, 1, 1, "member-1", null);
1124 InMemorySnapshotStore.addSnapshotSavedLatch(persistenceId);
1126 TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
1127 .config(config).restoreFromSnapshot(snapshot).props()
1128 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1129 MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1131 mockRaftActor.waitForRecoveryComplete();
1133 Snapshot savedSnapshot = InMemorySnapshotStore.waitForSavedSnapshot(persistenceId, Snapshot.class);
1134 assertEquals("getElectionTerm", snapshot.getElectionTerm(), savedSnapshot.getElectionTerm());
1135 assertEquals("getElectionVotedFor", snapshot.getElectionVotedFor(), savedSnapshot.getElectionVotedFor());
1136 assertEquals("getLastAppliedIndex", snapshot.getLastAppliedIndex(), savedSnapshot.getLastAppliedIndex());
1137 assertEquals("getLastAppliedTerm", snapshot.getLastAppliedTerm(), savedSnapshot.getLastAppliedTerm());
1138 assertEquals("getLastIndex", snapshot.getLastIndex(), savedSnapshot.getLastIndex());
1139 assertEquals("getLastTerm", snapshot.getLastTerm(), savedSnapshot.getLastTerm());
1140 assertEquals("getState", snapshot.getState(), savedSnapshot.getState());
1141 assertEquals("getUnAppliedEntries", snapshot.getUnAppliedEntries(), savedSnapshot.getUnAppliedEntries());
1143 verify(mockRaftActor.snapshotCohortDelegate, timeout(5000)).applySnapshot(any(Snapshot.State.class));
1145 RaftActorContext context = mockRaftActor.getRaftActorContext();
1146 assertEquals("Journal log size", 1, context.getReplicatedLog().size());
1147 assertEquals("Last index", snapshotLastIndex, context.getReplicatedLog().lastIndex());
1148 assertEquals("Last applied", snapshotLastApplied, context.getLastApplied());
1149 assertEquals("Commit index", snapshotLastApplied, context.getCommitIndex());
1150 assertEquals("Recovered state", snapshotState.getState(), mockRaftActor.getState());
1151 assertEquals("Current term", 1L, context.getTermInformation().getCurrentTerm());
1152 assertEquals("Voted for", "member-1", context.getTermInformation().getVotedFor());
1154 // Test with data persistence disabled
1156 snapshot = Snapshot.create(EmptyState.INSTANCE, Collections.<ReplicatedLogEntry>emptyList(),
1157 -1, -1, -1, -1, 5, "member-1", null);
1159 persistenceId = factory.generateActorId("test-actor-");
1161 raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
1162 .config(config).restoreFromSnapshot(snapshot)
1163 .persistent(Optional.of(Boolean.FALSE)).props()
1164 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1165 mockRaftActor = raftActorRef.underlyingActor();
1167 mockRaftActor.waitForRecoveryComplete();
1168 assertEquals("snapshot committed", true,
1169 Uninterruptibles.awaitUninterruptibly(mockRaftActor.snapshotCommitted, 5, TimeUnit.SECONDS));
1171 context = mockRaftActor.getRaftActorContext();
1172 assertEquals("Current term", 5L, context.getTermInformation().getCurrentTerm());
1173 assertEquals("Voted for", "member-1", context.getTermInformation().getVotedFor());
1175 TEST_LOG.info("testRestoreFromSnapshot ending");
1179 public void testRestoreFromSnapshotWithRecoveredData() throws Exception {
1180 TEST_LOG.info("testRestoreFromSnapshotWithRecoveredData starting");
1182 String persistenceId = factory.generateActorId("test-actor-");
1183 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1184 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1186 List<MockPayload> state = Arrays.asList(new MockRaftActorContext.MockPayload("A"));
1187 Snapshot snapshot = Snapshot.create(ByteState.of(fromObject(state).toByteArray()),
1188 Arrays.<ReplicatedLogEntry>asList(), 5, 2, 5, 2, 2, "member-1", null);
1190 InMemoryJournal.addEntry(persistenceId, 1, new SimpleReplicatedLogEntry(0, 1,
1191 new MockRaftActorContext.MockPayload("B")));
1193 TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
1194 .config(config).restoreFromSnapshot(snapshot).props()
1195 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1196 MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1198 mockRaftActor.waitForRecoveryComplete();
1200 Uninterruptibles.sleepUninterruptibly(500, TimeUnit.MILLISECONDS);
1201 verify(mockRaftActor.snapshotCohortDelegate, never()).applySnapshot(any(Snapshot.State.class));
1203 RaftActorContext context = mockRaftActor.getRaftActorContext();
1204 assertEquals("Journal log size", 1, context.getReplicatedLog().size());
1205 assertEquals("Last index", 0, context.getReplicatedLog().lastIndex());
1206 assertEquals("Last applied", -1, context.getLastApplied());
1207 assertEquals("Commit index", -1, context.getCommitIndex());
1208 assertEquals("Current term", 0, context.getTermInformation().getCurrentTerm());
1209 assertEquals("Voted for", null, context.getTermInformation().getVotedFor());
1211 TEST_LOG.info("testRestoreFromSnapshotWithRecoveredData ending");
1215 public void testNonVotingOnRecovery() {
1216 TEST_LOG.info("testNonVotingOnRecovery starting");
1218 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1219 config.setElectionTimeoutFactor(1);
1220 config.setHeartBeatInterval(FiniteDuration.create(1, TimeUnit.MILLISECONDS));
1222 String persistenceId = factory.generateActorId("test-actor-");
1223 InMemoryJournal.addEntry(persistenceId, 1, new SimpleReplicatedLogEntry(0, 1,
1224 new ServerConfigurationPayload(Arrays.asList(new ServerInfo(persistenceId, false)))));
1226 TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
1227 .config(config).props().withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1228 MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1230 mockRaftActor.waitForInitializeBehaviorComplete();
1232 // Sleep a bit and verify it didn't get an election timeout and schedule an election.
1234 Uninterruptibles.sleepUninterruptibly(400, TimeUnit.MILLISECONDS);
1235 assertEquals("getRaftState", RaftState.Follower, mockRaftActor.getRaftState());
1237 TEST_LOG.info("testNonVotingOnRecovery ending");
1241 public void testLeaderTransitioning() {
1242 TEST_LOG.info("testLeaderTransitioning starting");
1244 ActorRef notifierActor = factory.createActor(MessageCollectorActor.props());
1246 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1247 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1249 String persistenceId = factory.generateActorId("test-actor-");
1251 TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
1252 .config(config).roleChangeNotifier(notifierActor).props()
1253 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1254 MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1256 mockRaftActor.waitForInitializeBehaviorComplete();
1258 raftActorRef.tell(new AppendEntries(1L, "leader", 0L, 1L, Collections.<ReplicatedLogEntry>emptyList(),
1259 0L, -1L, (short)1), ActorRef.noSender());
1260 LeaderStateChanged leaderStateChange = MessageCollectorActor.expectFirstMatching(
1261 notifierActor, LeaderStateChanged.class);
1262 assertEquals("getLeaderId", "leader", leaderStateChange.getLeaderId());
1264 MessageCollectorActor.clearMessages(notifierActor);
1266 raftActorRef.tell(new LeaderTransitioning("leader"), ActorRef.noSender());
1268 leaderStateChange = MessageCollectorActor.expectFirstMatching(notifierActor, LeaderStateChanged.class);
1269 assertEquals("getMemberId", persistenceId, leaderStateChange.getMemberId());
1270 assertEquals("getLeaderId", null, leaderStateChange.getLeaderId());
1272 TEST_LOG.info("testLeaderTransitioning ending");
1275 @SuppressWarnings({ "unchecked", "rawtypes" })
1277 public void testReplicateWithPersistencePending() throws Exception {
1278 final String leaderId = factory.generateActorId("leader-");
1279 final String followerId = factory.generateActorId("follower-");
1281 final ActorRef followerActor = factory.createActor(MessageCollectorActor.props());
1283 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1284 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
1285 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
1287 DataPersistenceProvider mockPersistenceProvider = mock(DataPersistenceProvider.class);
1288 doReturn(true).when(mockPersistenceProvider).isRecoveryApplicable();
1290 TestActorRef<MockRaftActor> leaderActorRef = factory.createTestActor(
1291 MockRaftActor.props(leaderId, ImmutableMap.of(followerId, followerActor.path().toString()), config,
1292 mockPersistenceProvider), leaderId);
1293 MockRaftActor leaderActor = leaderActorRef.underlyingActor();
1294 leaderActor.waitForInitializeBehaviorComplete();
1296 leaderActor.getRaftActorContext().getTermInformation().update(1, leaderId);
1298 Leader leader = new Leader(leaderActor.getRaftActorContext());
1299 leaderActor.setCurrentBehavior(leader);
1301 leaderActor.persistData(leaderActorRef, new MockIdentifier("1"), new MockRaftActorContext.MockPayload("1"),
1304 ReplicatedLogEntry logEntry = leaderActor.getReplicatedLog().get(0);
1305 assertNotNull("ReplicatedLogEntry not found", logEntry);
1306 assertEquals("isPersistencePending", true, logEntry.isPersistencePending());
1307 assertEquals("getCommitIndex", -1, leaderActor.getRaftActorContext().getCommitIndex());
1309 leaderActor.onReceiveCommand(new AppendEntriesReply(followerId, 1, true, 0, 1, (short)0));
1310 assertEquals("getCommitIndex", -1, leaderActor.getRaftActorContext().getCommitIndex());
1312 ArgumentCaptor<Procedure> callbackCaptor = ArgumentCaptor.forClass(Procedure.class);
1313 verify(mockPersistenceProvider).persistAsync(eq(logEntry), callbackCaptor.capture());
1315 callbackCaptor.getValue().apply(logEntry);
1317 assertEquals("getCommitIndex", 0, leaderActor.getRaftActorContext().getCommitIndex());
1318 assertEquals("getLastApplied", 0, leaderActor.getRaftActorContext().getLastApplied());
1322 public void testReplicateWithBatchHint() throws Exception {
1323 final String leaderId = factory.generateActorId("leader-");
1324 final String followerId = factory.generateActorId("follower-");
1326 final ActorRef followerActor = factory.createActor(MessageCollectorActor.props());
1328 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1329 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
1330 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
1332 TestActorRef<MockRaftActor> leaderActorRef = factory.createTestActor(
1333 MockRaftActor.props(leaderId, ImmutableMap.of(followerId, followerActor.path().toString()), config),
1335 MockRaftActor leaderActor = leaderActorRef.underlyingActor();
1336 leaderActor.waitForInitializeBehaviorComplete();
1338 leaderActor.getRaftActorContext().getTermInformation().update(1, leaderId);
1340 Leader leader = new Leader(leaderActor.getRaftActorContext());
1341 leaderActor.setCurrentBehavior(leader);
1343 MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class);
1344 MessageCollectorActor.clearMessages(followerActor);
1346 leaderActor.onReceiveCommand(new AppendEntriesReply(followerId, 1, true, -1, -1, (short)0));
1348 leaderActor.persistData(leaderActorRef, new MockIdentifier("1"), new MockPayload("1"), true);
1349 MessageCollectorActor.assertNoneMatching(followerActor, AppendEntries.class, 500);
1351 leaderActor.persistData(leaderActorRef, new MockIdentifier("2"), new MockPayload("2"), true);
1352 MessageCollectorActor.assertNoneMatching(followerActor, AppendEntries.class, 500);
1354 leaderActor.persistData(leaderActorRef, new MockIdentifier("3"), new MockPayload("3"), false);
1355 AppendEntries appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class);
1356 assertEquals("AppendEntries size", 3, appendEntries.getEntries().size());
1360 @SuppressWarnings("checkstyle:illegalcatch")
1361 public void testApplyStateRace() throws Exception {
1362 final String leaderId = factory.generateActorId("leader-");
1363 final String followerId = factory.generateActorId("follower-");
1365 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1366 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
1367 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1369 ActorRef mockFollowerActorRef = factory.createActor(MessageCollectorActor.props());
1371 TestRaftActor.Builder builder = TestRaftActor.newBuilder()
1373 .peerAddresses(ImmutableMap.of(followerId,
1374 mockFollowerActorRef.path().toString()))
1376 .collectorActor(factory.createActor(
1377 MessageCollectorActor.props(), factory.generateActorId(leaderId + "-collector")));
1379 TestActorRef<MockRaftActor> leaderActorRef = factory.createTestActor(
1380 builder.props(), leaderId);
1381 MockRaftActor leaderActor = leaderActorRef.underlyingActor();
1382 leaderActor.waitForInitializeBehaviorComplete();
1384 leaderActor.getRaftActorContext().getTermInformation().update(1, leaderId);
1385 Leader leader = new Leader(leaderActor.getRaftActorContext());
1386 leaderActor.setCurrentBehavior(leader);
1388 final ExecutorService executorService = Executors.newSingleThreadExecutor();
1390 leaderActor.setPersistence(new PersistentDataProvider(leaderActor) {
1392 public <T> void persistAsync(final T entry, final Procedure<T> procedure) {
1393 // needs to be executed from another thread to simulate the persistence actor calling this callback
1394 executorService.submit(() -> {
1396 procedure.apply(entry);
1397 } catch (Exception e) {
1398 TEST_LOG.info("Fail during async persist callback", e);
1400 }, "persistence-callback");
1404 leader.getFollower(followerId).setNextIndex(0);
1405 leader.getFollower(followerId).setMatchIndex(-1);
1407 // hitting this is flimsy so run multiple times to improve the chance of things
1408 // blowing up while breaking actor containment
1409 final TestPersist message =
1410 new TestPersist(leaderActorRef, new MockIdentifier("1"), new MockPayload("1"));
1411 for (int i = 0; i < 100; i++) {
1412 leaderActorRef.tell(message, null);
1414 AppendEntriesReply reply =
1415 new AppendEntriesReply(followerId, 1, true, i, 1, (short) 5);
1416 leaderActorRef.tell(reply, mockFollowerActorRef);
1419 await("Persistence callback.").atMost(5, TimeUnit.SECONDS).until(() -> leaderActor.getState().size() == 100);
1420 executorService.shutdown();