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.collect.ImmutableMap;
41 import com.google.common.util.concurrent.Uninterruptibles;
42 import java.io.ByteArrayOutputStream;
43 import java.io.ObjectOutputStream;
44 import java.time.Duration;
45 import java.util.ArrayList;
46 import java.util.Arrays;
47 import java.util.Collections;
48 import java.util.HashMap;
49 import java.util.List;
51 import java.util.Optional;
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(), Optional.empty());
344 doReturn(true).when(mockSupport).handleSnapshotMessage(same(captureSnapshotReply), any(ActorRef.class));
345 mockRaftActor.handleCommand(captureSnapshotReply);
347 SaveSnapshotSuccess saveSnapshotSuccess = new SaveSnapshotSuccess(new SnapshotMetadata("", 0L, 0L));
348 doReturn(true).when(mockSupport).handleSnapshotMessage(same(saveSnapshotSuccess), any(ActorRef.class));
349 mockRaftActor.handleCommand(saveSnapshotSuccess);
351 SaveSnapshotFailure saveSnapshotFailure = new SaveSnapshotFailure(new SnapshotMetadata("", 0L, 0L),
353 doReturn(true).when(mockSupport).handleSnapshotMessage(same(saveSnapshotFailure), any(ActorRef.class));
354 mockRaftActor.handleCommand(saveSnapshotFailure);
356 doReturn(true).when(mockSupport).handleSnapshotMessage(same(RaftActorSnapshotMessageSupport.COMMIT_SNAPSHOT),
357 any(ActorRef.class));
358 mockRaftActor.handleCommand(RaftActorSnapshotMessageSupport.COMMIT_SNAPSHOT);
360 doReturn(true).when(mockSupport).handleSnapshotMessage(same(GetSnapshot.INSTANCE), any(ActorRef.class));
361 mockRaftActor.handleCommand(GetSnapshot.INSTANCE);
363 verify(mockSupport).handleSnapshotMessage(same(applySnapshot), any(ActorRef.class));
364 verify(mockSupport).handleSnapshotMessage(same(captureSnapshotReply), any(ActorRef.class));
365 verify(mockSupport).handleSnapshotMessage(same(saveSnapshotSuccess), any(ActorRef.class));
366 verify(mockSupport).handleSnapshotMessage(same(saveSnapshotFailure), any(ActorRef.class));
367 verify(mockSupport).handleSnapshotMessage(same(RaftActorSnapshotMessageSupport.COMMIT_SNAPSHOT),
368 any(ActorRef.class));
369 verify(mockSupport).handleSnapshotMessage(same(GetSnapshot.INSTANCE), any(ActorRef.class));
372 @SuppressWarnings("unchecked")
374 public void testApplyJournalEntriesCallsDataPersistence() throws Exception {
375 String persistenceId = factory.generateActorId("leader-");
377 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
379 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
381 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
383 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
384 Collections.<String, String>emptyMap(), config, dataPersistenceProvider), persistenceId);
386 MockRaftActor mockRaftActor = mockActorRef.underlyingActor();
388 mockRaftActor.waitForInitializeBehaviorComplete();
390 mockRaftActor.waitUntilLeader();
392 mockRaftActor.handleCommand(new ApplyJournalEntries(10));
394 verify(dataPersistenceProvider).persistAsync(any(ApplyJournalEntries.class), any(Procedure.class));
398 public void testApplyState() {
399 String persistenceId = factory.generateActorId("leader-");
401 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
403 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
405 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
407 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
408 Collections.<String, String>emptyMap(), config, dataPersistenceProvider), persistenceId);
410 MockRaftActor mockRaftActor = mockActorRef.underlyingActor();
412 mockRaftActor.waitForInitializeBehaviorComplete();
414 ReplicatedLogEntry entry = new SimpleReplicatedLogEntry(5, 1, new MockRaftActorContext.MockPayload("F"));
416 final Identifier id = new MockIdentifier("apply-state");
417 mockRaftActor.getRaftActorContext().getApplyStateConsumer().accept(new ApplyState(mockActorRef, id, entry));
419 verify(mockRaftActor.actorDelegate).applyState(eq(mockActorRef), eq(id), any());
423 public void testRaftRoleChangeNotifierWhenRaftActorHasNoPeers() throws Exception {
424 ActorRef notifierActor = factory.createActor(MessageCollectorActor.props());
425 MessageCollectorActor.waitUntilReady(notifierActor);
427 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
428 long heartBeatInterval = 100;
429 config.setHeartBeatInterval(FiniteDuration.create(heartBeatInterval, TimeUnit.MILLISECONDS));
430 config.setElectionTimeoutFactor(20);
432 String persistenceId = factory.generateActorId("notifier-");
434 final TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder()
435 .id(persistenceId).config(config).roleChangeNotifier(notifierActor).dataPersistenceProvider(
436 createProvider()).props().withDispatcher(Dispatchers.DefaultDispatcherId()),
439 List<RoleChanged> matches = MessageCollectorActor.expectMatching(notifierActor, RoleChanged.class, 3);
442 // check if the notifier got a role change from null to Follower
443 RoleChanged raftRoleChanged = matches.get(0);
444 assertEquals(persistenceId, raftRoleChanged.getMemberId());
445 assertNull(raftRoleChanged.getOldRole());
446 assertEquals(RaftState.Follower.name(), raftRoleChanged.getNewRole());
448 // check if the notifier got a role change from Follower to Candidate
449 raftRoleChanged = matches.get(1);
450 assertEquals(persistenceId, raftRoleChanged.getMemberId());
451 assertEquals(RaftState.Follower.name(), raftRoleChanged.getOldRole());
452 assertEquals(RaftState.Candidate.name(), raftRoleChanged.getNewRole());
454 // check if the notifier got a role change from Candidate to Leader
455 raftRoleChanged = matches.get(2);
456 assertEquals(persistenceId, raftRoleChanged.getMemberId());
457 assertEquals(RaftState.Candidate.name(), raftRoleChanged.getOldRole());
458 assertEquals(RaftState.Leader.name(), raftRoleChanged.getNewRole());
460 LeaderStateChanged leaderStateChange = MessageCollectorActor.expectFirstMatching(
461 notifierActor, LeaderStateChanged.class);
463 assertEquals(raftRoleChanged.getMemberId(), leaderStateChange.getLeaderId());
464 assertEquals(MockRaftActor.PAYLOAD_VERSION, leaderStateChange.getLeaderPayloadVersion());
466 MessageCollectorActor.clearMessages(notifierActor);
468 MockRaftActor raftActor = raftActorRef.underlyingActor();
469 final String newLeaderId = "new-leader";
470 final short newLeaderVersion = 6;
471 Follower follower = new Follower(raftActor.getRaftActorContext()) {
473 public RaftActorBehavior handleMessage(final ActorRef sender, final Object message) {
474 setLeaderId(newLeaderId);
475 setLeaderPayloadVersion(newLeaderVersion);
480 raftActor.newBehavior(follower);
482 leaderStateChange = MessageCollectorActor.expectFirstMatching(notifierActor, LeaderStateChanged.class);
483 assertEquals(persistenceId, leaderStateChange.getMemberId());
484 assertEquals(null, leaderStateChange.getLeaderId());
486 raftRoleChanged = MessageCollectorActor.expectFirstMatching(notifierActor, RoleChanged.class);
487 assertEquals(RaftState.Leader.name(), raftRoleChanged.getOldRole());
488 assertEquals(RaftState.Follower.name(), raftRoleChanged.getNewRole());
490 MessageCollectorActor.clearMessages(notifierActor);
492 raftActor.handleCommand("any");
494 leaderStateChange = MessageCollectorActor.expectFirstMatching(notifierActor, LeaderStateChanged.class);
495 assertEquals(persistenceId, leaderStateChange.getMemberId());
496 assertEquals(newLeaderId, leaderStateChange.getLeaderId());
497 assertEquals(newLeaderVersion, leaderStateChange.getLeaderPayloadVersion());
499 MessageCollectorActor.clearMessages(notifierActor);
501 raftActor.handleCommand("any");
503 Uninterruptibles.sleepUninterruptibly(505, TimeUnit.MILLISECONDS);
504 leaderStateChange = MessageCollectorActor.getFirstMatching(notifierActor, LeaderStateChanged.class);
505 assertNull(leaderStateChange);
509 public void testRaftRoleChangeNotifierWhenRaftActorHasPeers() throws Exception {
510 ActorRef notifierActor = factory.createActor(MessageCollectorActor.props());
511 MessageCollectorActor.waitUntilReady(notifierActor);
513 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
514 long heartBeatInterval = 100;
515 config.setHeartBeatInterval(FiniteDuration.create(heartBeatInterval, TimeUnit.MILLISECONDS));
516 config.setElectionTimeoutFactor(1);
518 String persistenceId = factory.generateActorId("notifier-");
520 factory.createActor(MockRaftActor.builder().id(persistenceId)
521 .peerAddresses(ImmutableMap.of("leader", "fake/path"))
522 .config(config).roleChangeNotifier(notifierActor).props());
524 List<RoleChanged> matches = null;
525 for (int i = 0; i < 5000 / heartBeatInterval; i++) {
526 matches = MessageCollectorActor.getAllMatching(notifierActor, RoleChanged.class);
527 assertNotNull(matches);
528 if (matches.size() == 3) {
531 Uninterruptibles.sleepUninterruptibly(heartBeatInterval, TimeUnit.MILLISECONDS);
534 assertNotNull(matches);
535 assertEquals(2, matches.size());
537 // check if the notifier got a role change from null to Follower
538 RoleChanged raftRoleChanged = matches.get(0);
539 assertEquals(persistenceId, raftRoleChanged.getMemberId());
540 assertNull(raftRoleChanged.getOldRole());
541 assertEquals(RaftState.Follower.name(), raftRoleChanged.getNewRole());
543 // check if the notifier got a role change from Follower to Candidate
544 raftRoleChanged = matches.get(1);
545 assertEquals(persistenceId, raftRoleChanged.getMemberId());
546 assertEquals(RaftState.Follower.name(), raftRoleChanged.getOldRole());
547 assertEquals(RaftState.Candidate.name(), raftRoleChanged.getNewRole());
551 public void testFakeSnapshotsForLeaderWithInRealSnapshots() throws Exception {
552 final String persistenceId = factory.generateActorId("leader-");
553 final String follower1Id = factory.generateActorId("follower-");
555 ActorRef followerActor1 = factory.createActor(MessageCollectorActor.props());
557 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
558 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
559 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
561 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
563 Map<String, String> peerAddresses = new HashMap<>();
564 peerAddresses.put(follower1Id, followerActor1.path().toString());
566 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
567 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
569 MockRaftActor leaderActor = mockActorRef.underlyingActor();
571 leaderActor.getRaftActorContext().setCommitIndex(4);
572 leaderActor.getRaftActorContext().setLastApplied(4);
573 leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
575 leaderActor.waitForInitializeBehaviorComplete();
577 // create 8 entries in the log - 0 to 4 are applied and will get picked up as part of the capture snapshot
579 Leader leader = new Leader(leaderActor.getRaftActorContext());
580 leaderActor.setCurrentBehavior(leader);
581 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
583 MockRaftActorContext.MockReplicatedLogBuilder logBuilder = new MockRaftActorContext.MockReplicatedLogBuilder();
584 leaderActor.getRaftActorContext().setReplicatedLog(logBuilder.createEntries(0, 8, 1).build());
586 assertEquals(8, leaderActor.getReplicatedLog().size());
588 leaderActor.getRaftActorContext().getSnapshotManager().capture(
589 new SimpleReplicatedLogEntry(6, 1, new MockRaftActorContext.MockPayload("x")), 4);
591 verify(leaderActor.snapshotCohortDelegate).createSnapshot(any(), any());
593 assertEquals(8, leaderActor.getReplicatedLog().size());
595 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
596 //fake snapshot on index 5
597 leaderActor.handleCommand(new AppendEntriesReply(follower1Id, 1, true, 5, 1, (short)0));
599 assertEquals(8, leaderActor.getReplicatedLog().size());
601 //fake snapshot on index 6
602 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
603 leaderActor.handleCommand(new AppendEntriesReply(follower1Id, 1, true, 6, 1, (short)0));
604 assertEquals(8, leaderActor.getReplicatedLog().size());
606 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
608 assertEquals(8, leaderActor.getReplicatedLog().size());
610 MockSnapshotState snapshotState = new MockSnapshotState(Arrays.asList(
611 new MockRaftActorContext.MockPayload("foo-0"),
612 new MockRaftActorContext.MockPayload("foo-1"),
613 new MockRaftActorContext.MockPayload("foo-2"),
614 new MockRaftActorContext.MockPayload("foo-3"),
615 new MockRaftActorContext.MockPayload("foo-4")));
617 leaderActor.getRaftActorContext().getSnapshotManager().persist(snapshotState, Optional.empty(),
618 Runtime.getRuntime().totalMemory());
620 assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
622 // The commit is needed to complete the snapshot creation process
623 leaderActor.getRaftActorContext().getSnapshotManager().commit(-1, -1);
625 // capture snapshot reply should remove the snapshotted entries only
626 assertEquals(3, leaderActor.getReplicatedLog().size());
627 assertEquals(7, leaderActor.getReplicatedLog().lastIndex());
629 // add another non-replicated entry
630 leaderActor.getReplicatedLog().append(
631 new SimpleReplicatedLogEntry(8, 1, new MockRaftActorContext.MockPayload("foo-8")));
633 //fake snapshot on index 7, since lastApplied = 7 , we would keep the last applied
634 leaderActor.handleCommand(new AppendEntriesReply(follower1Id, 1, true, 7, 1, (short)0));
635 assertEquals(2, leaderActor.getReplicatedLog().size());
636 assertEquals(8, leaderActor.getReplicatedLog().lastIndex());
640 public void testFakeSnapshotsForFollowerWithInRealSnapshots() throws Exception {
641 final String persistenceId = factory.generateActorId("follower-");
642 final String leaderId = factory.generateActorId("leader-");
644 ActorRef leaderActor1 = factory.createActor(MessageCollectorActor.props());
646 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
647 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
648 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
650 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
652 Map<String, String> peerAddresses = new HashMap<>();
653 peerAddresses.put(leaderId, leaderActor1.path().toString());
655 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
656 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
658 MockRaftActor followerActor = mockActorRef.underlyingActor();
659 followerActor.getRaftActorContext().setCommitIndex(4);
660 followerActor.getRaftActorContext().setLastApplied(4);
661 followerActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
663 followerActor.waitForInitializeBehaviorComplete();
666 Follower follower = new Follower(followerActor.getRaftActorContext());
667 followerActor.setCurrentBehavior(follower);
668 assertEquals(RaftState.Follower, followerActor.getCurrentBehavior().state());
670 // create 6 entries in the log - 0 to 4 are applied and will get picked up as part of the capture snapshot
671 MockRaftActorContext.MockReplicatedLogBuilder logBuilder = new MockRaftActorContext.MockReplicatedLogBuilder();
672 followerActor.getRaftActorContext().setReplicatedLog(logBuilder.createEntries(0, 6, 1).build());
674 // log has indices 0-5
675 assertEquals(6, followerActor.getReplicatedLog().size());
678 followerActor.getRaftActorContext().getSnapshotManager().capture(
679 new SimpleReplicatedLogEntry(5, 1, new MockRaftActorContext.MockPayload("D")), 4);
681 verify(followerActor.snapshotCohortDelegate).createSnapshot(any(), any());
683 assertEquals(6, followerActor.getReplicatedLog().size());
685 //fake snapshot on index 6
686 List<ReplicatedLogEntry> entries = Arrays.asList(
687 (ReplicatedLogEntry) new SimpleReplicatedLogEntry(6, 1, new MockRaftActorContext.MockPayload("foo-6")));
688 followerActor.handleCommand(new AppendEntries(1, leaderId, 5, 1, entries, 5, 5, (short)0));
689 assertEquals(7, followerActor.getReplicatedLog().size());
691 //fake snapshot on index 7
692 assertEquals(RaftState.Follower, followerActor.getCurrentBehavior().state());
694 entries = Arrays.asList((ReplicatedLogEntry) new SimpleReplicatedLogEntry(7, 1,
695 new MockRaftActorContext.MockPayload("foo-7")));
696 followerActor.handleCommand(new AppendEntries(1, leaderId, 6, 1, entries, 6, 6, (short) 0));
697 assertEquals(8, followerActor.getReplicatedLog().size());
699 assertEquals(RaftState.Follower, followerActor.getCurrentBehavior().state());
702 ByteString snapshotBytes = fromObject(Arrays.asList(
703 new MockRaftActorContext.MockPayload("foo-0"),
704 new MockRaftActorContext.MockPayload("foo-1"),
705 new MockRaftActorContext.MockPayload("foo-2"),
706 new MockRaftActorContext.MockPayload("foo-3"),
707 new MockRaftActorContext.MockPayload("foo-4")));
708 followerActor.handleCommand(new CaptureSnapshotReply(ByteState.of(snapshotBytes.toByteArray()),
710 assertTrue(followerActor.getRaftActorContext().getSnapshotManager().isCapturing());
712 // The commit is needed to complete the snapshot creation process
713 followerActor.getRaftActorContext().getSnapshotManager().commit(-1, -1);
715 // capture snapshot reply should remove the snapshotted entries only till replicatedToAllIndex
716 assertEquals(3, followerActor.getReplicatedLog().size()); //indexes 5,6,7 left in the log
717 assertEquals(7, followerActor.getReplicatedLog().lastIndex());
719 entries = Arrays.asList((ReplicatedLogEntry) new SimpleReplicatedLogEntry(8, 1,
720 new MockRaftActorContext.MockPayload("foo-7")));
721 // send an additional entry 8 with leaderCommit = 7
722 followerActor.handleCommand(new AppendEntries(1, leaderId, 7, 1, entries, 7, 7, (short) 0));
724 // 7 and 8, as lastapplied is 7
725 assertEquals(2, followerActor.getReplicatedLog().size());
729 public void testFakeSnapshotsForLeaderWithInInitiateSnapshots() throws Exception {
730 final String persistenceId = factory.generateActorId("leader-");
731 final String follower1Id = factory.generateActorId("follower-");
732 final String follower2Id = factory.generateActorId("follower-");
734 final ActorRef followerActor1 = factory.createActor(MessageCollectorActor.props(), follower1Id);
735 final ActorRef followerActor2 = factory.createActor(MessageCollectorActor.props(), follower2Id);
737 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
738 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
739 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
741 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
743 Map<String, String> peerAddresses = new HashMap<>();
744 peerAddresses.put(follower1Id, followerActor1.path().toString());
745 peerAddresses.put(follower2Id, followerActor2.path().toString());
747 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
748 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
750 MockRaftActor leaderActor = mockActorRef.underlyingActor();
751 leaderActor.getRaftActorContext().setCommitIndex(9);
752 leaderActor.getRaftActorContext().setLastApplied(9);
753 leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
755 leaderActor.waitForInitializeBehaviorComplete();
757 Leader leader = new Leader(leaderActor.getRaftActorContext());
758 leaderActor.setCurrentBehavior(leader);
759 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
761 // create 5 entries in the log
762 MockRaftActorContext.MockReplicatedLogBuilder logBuilder = new MockRaftActorContext.MockReplicatedLogBuilder();
763 leaderActor.getRaftActorContext().setReplicatedLog(logBuilder.createEntries(5, 10, 1).build());
765 //set the snapshot index to 4 , 0 to 4 are snapshotted
766 leaderActor.getRaftActorContext().getReplicatedLog().setSnapshotIndex(4);
767 //setting replicatedToAllIndex = 9, for the log to clear
768 leader.setReplicatedToAllIndex(9);
769 assertEquals(5, leaderActor.getReplicatedLog().size());
770 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
772 leaderActor.handleCommand(new AppendEntriesReply(follower1Id, 1, true, 9, 1, (short) 0));
773 assertEquals(5, leaderActor.getReplicatedLog().size());
774 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
776 // set the 2nd follower nextIndex to 1 which has been snapshotted
777 leaderActor.handleCommand(new AppendEntriesReply(follower2Id, 1, true, 0, 1, (short)0));
778 assertEquals(5, leaderActor.getReplicatedLog().size());
779 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
781 // simulate a real snapshot
782 leaderActor.handleCommand(SendHeartBeat.INSTANCE);
783 assertEquals(5, leaderActor.getReplicatedLog().size());
784 assertEquals(String.format("expected to be Leader but was %s. Current Leader = %s ",
785 leaderActor.getCurrentBehavior().state(), leaderActor.getLeaderId()),
786 RaftState.Leader, leaderActor.getCurrentBehavior().state());
789 //reply from a slow follower does not initiate a fake snapshot
790 leaderActor.handleCommand(new AppendEntriesReply(follower2Id, 1, true, 9, 1, (short)0));
791 assertEquals("Fake snapshot should not happen when Initiate is in progress", 5,
792 leaderActor.getReplicatedLog().size());
794 ByteString snapshotBytes = fromObject(Arrays.asList(
795 new MockRaftActorContext.MockPayload("foo-0"),
796 new MockRaftActorContext.MockPayload("foo-1"),
797 new MockRaftActorContext.MockPayload("foo-2"),
798 new MockRaftActorContext.MockPayload("foo-3"),
799 new MockRaftActorContext.MockPayload("foo-4")));
800 leaderActor.handleCommand(new CaptureSnapshotReply(ByteState.of(snapshotBytes.toByteArray()),
802 assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
804 assertEquals("Real snapshot didn't clear the log till replicatedToAllIndex", 0,
805 leaderActor.getReplicatedLog().size());
807 //reply from a slow follower after should not raise errors
808 leaderActor.handleCommand(new AppendEntriesReply(follower2Id, 1, true, 5, 1, (short) 0));
809 assertEquals(0, leaderActor.getReplicatedLog().size());
813 public void testRealSnapshotWhenReplicatedToAllIndexMinusOne() throws Exception {
814 String persistenceId = factory.generateActorId("leader-");
815 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
816 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
817 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
818 config.setSnapshotBatchCount(5);
820 DataPersistenceProvider dataPersistenceProvider = createProvider();
822 Map<String, String> peerAddresses = ImmutableMap.<String, String>builder().put("member1", "address").build();
824 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
825 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
827 MockRaftActor leaderActor = mockActorRef.underlyingActor();
828 leaderActor.getRaftActorContext().setCommitIndex(3);
829 leaderActor.getRaftActorContext().setLastApplied(3);
830 leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
832 leaderActor.waitForInitializeBehaviorComplete();
833 for (int i = 0; i < 4; i++) {
834 leaderActor.getReplicatedLog().append(new SimpleReplicatedLogEntry(i, 1,
835 new MockRaftActorContext.MockPayload("A")));
838 Leader leader = new Leader(leaderActor.getRaftActorContext());
839 leaderActor.setCurrentBehavior(leader);
840 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
842 // Simulate an install snaphost to a follower.
843 leaderActor.getRaftActorContext().getSnapshotManager().captureToInstall(
844 leaderActor.getReplicatedLog().last(), -1, "member1");
846 // Now send a CaptureSnapshotReply
847 mockActorRef.tell(new CaptureSnapshotReply(ByteState.of(fromObject("foo").toByteArray()),
848 Optional.empty()), mockActorRef);
850 // Trimming log in this scenario is a no-op
851 assertEquals(-1, leaderActor.getReplicatedLog().getSnapshotIndex());
852 assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
853 assertEquals(-1, leader.getReplicatedToAllIndex());
857 public void testRealSnapshotWhenReplicatedToAllIndexNotInReplicatedLog() throws Exception {
858 String persistenceId = factory.generateActorId("leader-");
859 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
860 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
861 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
862 config.setSnapshotBatchCount(5);
864 DataPersistenceProvider dataPersistenceProvider = createProvider();
866 Map<String, String> peerAddresses = ImmutableMap.<String, String>builder().put("member1", "address").build();
868 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
869 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
871 MockRaftActor leaderActor = mockActorRef.underlyingActor();
872 leaderActor.getRaftActorContext().setCommitIndex(3);
873 leaderActor.getRaftActorContext().setLastApplied(3);
874 leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
875 leaderActor.getReplicatedLog().setSnapshotIndex(3);
877 leaderActor.waitForInitializeBehaviorComplete();
878 Leader leader = new Leader(leaderActor.getRaftActorContext());
879 leaderActor.setCurrentBehavior(leader);
880 leader.setReplicatedToAllIndex(3);
881 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
883 // Persist another entry (this will cause a CaptureSnapshot to be triggered
884 leaderActor.persistData(mockActorRef, new MockIdentifier("x"),
885 new MockRaftActorContext.MockPayload("duh"), false);
887 // Now send a CaptureSnapshotReply
888 mockActorRef.tell(new CaptureSnapshotReply(ByteState.of(fromObject("foo").toByteArray()),
889 Optional.empty()), mockActorRef);
891 // Trimming log in this scenario is a no-op
892 assertEquals(3, leaderActor.getReplicatedLog().getSnapshotIndex());
893 assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
894 assertEquals(3, leader.getReplicatedToAllIndex());
897 private static DataPersistenceProvider createProvider() {
898 return new NonPersistentDataProvider(Runnable::run);
902 public void testSwitchBehavior() {
903 String persistenceId = factory.generateActorId("leader-");
904 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
905 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
906 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
907 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
908 config.setSnapshotBatchCount(5);
910 DataPersistenceProvider dataPersistenceProvider = createProvider();
912 Map<String, String> peerAddresses = ImmutableMap.<String, String>builder().build();
914 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
915 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
917 MockRaftActor leaderActor = mockActorRef.underlyingActor();
919 leaderActor.waitForRecoveryComplete();
921 leaderActor.handleCommand(new SwitchBehavior(RaftState.Follower, 100));
923 assertEquals(100, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
924 assertEquals(RaftState.Follower, leaderActor.getCurrentBehavior().state());
926 leaderActor.handleCommand(new SwitchBehavior(RaftState.Leader, 110));
928 assertEquals(110, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
929 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
931 leaderActor.handleCommand(new SwitchBehavior(RaftState.Candidate, 125));
933 assertEquals(110, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
934 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
936 leaderActor.handleCommand(new SwitchBehavior(RaftState.IsolatedLeader, 125));
938 assertEquals(110, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
939 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
942 public static ByteString fromObject(final Object snapshot) throws Exception {
943 ByteArrayOutputStream bos = null;
944 ObjectOutputStream os = null;
946 bos = new ByteArrayOutputStream();
947 os = new ObjectOutputStream(bos);
948 os.writeObject(snapshot);
949 byte[] snapshotBytes = bos.toByteArray();
950 return ByteString.copyFrom(snapshotBytes);
963 public void testUpdateConfigParam() {
964 DefaultConfigParamsImpl emptyConfig = new DefaultConfigParamsImpl();
965 String persistenceId = factory.generateActorId("follower-");
966 ImmutableMap<String, String> peerAddresses =
967 ImmutableMap.<String, String>builder().put("member1", "address").build();
968 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
970 TestActorRef<MockRaftActor> actorRef = factory.createTestActor(
971 MockRaftActor.props(persistenceId, peerAddresses, emptyConfig, dataPersistenceProvider), persistenceId);
972 MockRaftActor mockRaftActor = actorRef.underlyingActor();
973 mockRaftActor.waitForInitializeBehaviorComplete();
975 RaftActorBehavior behavior = mockRaftActor.getCurrentBehavior();
976 mockRaftActor.updateConfigParams(emptyConfig);
977 assertSame("Same Behavior", behavior, mockRaftActor.getCurrentBehavior());
978 assertEquals("Behavior State", RaftState.Follower,
979 mockRaftActor.getCurrentBehavior().state());
981 DefaultConfigParamsImpl disableConfig = new DefaultConfigParamsImpl();
982 disableConfig.setCustomRaftPolicyImplementationClass(
983 "org.opendaylight.controller.cluster.raft.policy.DisableElectionsRaftPolicy");
984 mockRaftActor.updateConfigParams(disableConfig);
985 assertNotSame("Different Behavior", behavior, mockRaftActor.getCurrentBehavior());
986 assertEquals("Behavior State", RaftState.Follower,
987 mockRaftActor.getCurrentBehavior().state());
989 behavior = mockRaftActor.getCurrentBehavior();
990 mockRaftActor.updateConfigParams(disableConfig);
991 assertSame("Same Behavior", behavior, mockRaftActor.getCurrentBehavior());
992 assertEquals("Behavior State", RaftState.Follower,
993 mockRaftActor.getCurrentBehavior().state());
995 DefaultConfigParamsImpl defaultConfig = new DefaultConfigParamsImpl();
996 defaultConfig.setCustomRaftPolicyImplementationClass(
997 "org.opendaylight.controller.cluster.raft.policy.DefaultRaftPolicy");
998 mockRaftActor.updateConfigParams(defaultConfig);
999 assertNotSame("Different Behavior", behavior, mockRaftActor.getCurrentBehavior());
1000 assertEquals("Behavior State", RaftState.Follower,
1001 mockRaftActor.getCurrentBehavior().state());
1003 behavior = mockRaftActor.getCurrentBehavior();
1004 mockRaftActor.updateConfigParams(defaultConfig);
1005 assertSame("Same Behavior", behavior, mockRaftActor.getCurrentBehavior());
1006 assertEquals("Behavior State", RaftState.Follower,
1007 mockRaftActor.getCurrentBehavior().state());
1011 public void testGetSnapshot() {
1012 TEST_LOG.info("testGetSnapshot starting");
1014 final TestKit kit = new TestKit(getSystem());
1016 String persistenceId = factory.generateActorId("test-actor-");
1017 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1018 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1022 InMemoryJournal.addEntry(persistenceId, seqN++, new UpdateElectionTerm(term, "member-1"));
1023 InMemoryJournal.addEntry(persistenceId, seqN++, new SimpleReplicatedLogEntry(0, term,
1024 new MockRaftActorContext.MockPayload("A")));
1025 InMemoryJournal.addEntry(persistenceId, seqN++, new SimpleReplicatedLogEntry(1, term,
1026 new MockRaftActorContext.MockPayload("B")));
1027 InMemoryJournal.addEntry(persistenceId, seqN++, new ApplyJournalEntries(1));
1028 InMemoryJournal.addEntry(persistenceId, seqN++, new SimpleReplicatedLogEntry(2, term,
1029 new MockRaftActorContext.MockPayload("C")));
1031 TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
1032 ImmutableMap.<String, String>builder().put("member1", "address").build(), config)
1033 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1034 MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1036 mockRaftActor.waitForRecoveryComplete();
1038 mockRaftActor.snapshotCohortDelegate = mock(RaftActorSnapshotCohort.class);
1040 raftActorRef.tell(GetSnapshot.INSTANCE, kit.getRef());
1042 ArgumentCaptor<ActorRef> replyActor = ArgumentCaptor.forClass(ActorRef.class);
1043 verify(mockRaftActor.snapshotCohortDelegate, timeout(5000)).createSnapshot(replyActor.capture(),
1044 eq(Optional.empty()));
1046 byte[] stateSnapshot = new byte[]{1,2,3};
1047 replyActor.getValue().tell(new CaptureSnapshotReply(ByteState.of(stateSnapshot), Optional.empty()),
1048 ActorRef.noSender());
1050 GetSnapshotReply reply = kit.expectMsgClass(GetSnapshotReply.class);
1052 assertEquals("getId", persistenceId, reply.getId());
1053 Snapshot replySnapshot = reply.getSnapshot();
1054 assertEquals("getElectionTerm", term, replySnapshot.getElectionTerm());
1055 assertEquals("getElectionVotedFor", "member-1", replySnapshot.getElectionVotedFor());
1056 assertEquals("getLastAppliedIndex", 1L, replySnapshot.getLastAppliedIndex());
1057 assertEquals("getLastAppliedTerm", term, replySnapshot.getLastAppliedTerm());
1058 assertEquals("getLastIndex", 2L, replySnapshot.getLastIndex());
1059 assertEquals("getLastTerm", term, replySnapshot.getLastTerm());
1060 assertEquals("getState", ByteState.of(stateSnapshot), replySnapshot.getState());
1061 assertEquals("getUnAppliedEntries size", 1, replySnapshot.getUnAppliedEntries().size());
1062 assertEquals("UnApplied entry index ", 2L, replySnapshot.getUnAppliedEntries().get(0).getIndex());
1064 // Test with timeout
1066 mockRaftActor.getSnapshotMessageSupport().setSnapshotReplyActorTimeout(
1067 FiniteDuration.create(200, TimeUnit.MILLISECONDS));
1068 reset(mockRaftActor.snapshotCohortDelegate);
1070 raftActorRef.tell(GetSnapshot.INSTANCE, kit.getRef());
1071 Failure failure = kit.expectMsgClass(akka.actor.Status.Failure.class);
1072 assertEquals("Failure cause type", TimeoutException.class, failure.cause().getClass());
1074 mockRaftActor.getSnapshotMessageSupport().setSnapshotReplyActorTimeout(
1075 FiniteDuration.create(30, TimeUnit.SECONDS));
1077 // Test with persistence disabled.
1079 mockRaftActor.setPersistence(false);
1080 reset(mockRaftActor.snapshotCohortDelegate);
1082 raftActorRef.tell(GetSnapshot.INSTANCE, kit.getRef());
1083 reply = kit.expectMsgClass(GetSnapshotReply.class);
1084 verify(mockRaftActor.snapshotCohortDelegate, never()).createSnapshot(any(), any());
1086 assertEquals("getId", persistenceId, reply.getId());
1087 replySnapshot = reply.getSnapshot();
1088 assertEquals("getElectionTerm", term, replySnapshot.getElectionTerm());
1089 assertEquals("getElectionVotedFor", "member-1", replySnapshot.getElectionVotedFor());
1090 assertEquals("getLastAppliedIndex", -1L, replySnapshot.getLastAppliedIndex());
1091 assertEquals("getLastAppliedTerm", -1L, replySnapshot.getLastAppliedTerm());
1092 assertEquals("getLastIndex", -1L, replySnapshot.getLastIndex());
1093 assertEquals("getLastTerm", -1L, replySnapshot.getLastTerm());
1094 assertEquals("getState type", EmptyState.INSTANCE, replySnapshot.getState());
1095 assertEquals("getUnAppliedEntries size", 0, replySnapshot.getUnAppliedEntries().size());
1097 TEST_LOG.info("testGetSnapshot ending");
1101 public void testRestoreFromSnapshot() {
1102 TEST_LOG.info("testRestoreFromSnapshot starting");
1104 String persistenceId = factory.generateActorId("test-actor-");
1105 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1106 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1108 List<ReplicatedLogEntry> snapshotUnappliedEntries = new ArrayList<>();
1109 snapshotUnappliedEntries.add(new SimpleReplicatedLogEntry(4, 1, new MockRaftActorContext.MockPayload("E")));
1111 int snapshotLastApplied = 3;
1112 int snapshotLastIndex = 4;
1114 MockSnapshotState snapshotState = new MockSnapshotState(Arrays.asList(
1115 new MockRaftActorContext.MockPayload("A"),
1116 new MockRaftActorContext.MockPayload("B"),
1117 new MockRaftActorContext.MockPayload("C"),
1118 new MockRaftActorContext.MockPayload("D")));
1120 Snapshot snapshot = Snapshot.create(snapshotState, snapshotUnappliedEntries,
1121 snapshotLastIndex, 1, snapshotLastApplied, 1, 1, "member-1", null);
1123 InMemorySnapshotStore.addSnapshotSavedLatch(persistenceId);
1125 TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
1126 .config(config).restoreFromSnapshot(snapshot).props()
1127 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1128 MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1130 mockRaftActor.waitForRecoveryComplete();
1132 Snapshot savedSnapshot = InMemorySnapshotStore.waitForSavedSnapshot(persistenceId, Snapshot.class);
1133 assertEquals("getElectionTerm", snapshot.getElectionTerm(), savedSnapshot.getElectionTerm());
1134 assertEquals("getElectionVotedFor", snapshot.getElectionVotedFor(), savedSnapshot.getElectionVotedFor());
1135 assertEquals("getLastAppliedIndex", snapshot.getLastAppliedIndex(), savedSnapshot.getLastAppliedIndex());
1136 assertEquals("getLastAppliedTerm", snapshot.getLastAppliedTerm(), savedSnapshot.getLastAppliedTerm());
1137 assertEquals("getLastIndex", snapshot.getLastIndex(), savedSnapshot.getLastIndex());
1138 assertEquals("getLastTerm", snapshot.getLastTerm(), savedSnapshot.getLastTerm());
1139 assertEquals("getState", snapshot.getState(), savedSnapshot.getState());
1140 assertEquals("getUnAppliedEntries", snapshot.getUnAppliedEntries(), savedSnapshot.getUnAppliedEntries());
1142 verify(mockRaftActor.snapshotCohortDelegate, timeout(5000)).applySnapshot(any(Snapshot.State.class));
1144 RaftActorContext context = mockRaftActor.getRaftActorContext();
1145 assertEquals("Journal log size", 1, context.getReplicatedLog().size());
1146 assertEquals("Last index", snapshotLastIndex, context.getReplicatedLog().lastIndex());
1147 assertEquals("Last applied", snapshotLastApplied, context.getLastApplied());
1148 assertEquals("Commit index", snapshotLastApplied, context.getCommitIndex());
1149 assertEquals("Recovered state", snapshotState.getState(), mockRaftActor.getState());
1150 assertEquals("Current term", 1L, context.getTermInformation().getCurrentTerm());
1151 assertEquals("Voted for", "member-1", context.getTermInformation().getVotedFor());
1153 // Test with data persistence disabled
1155 snapshot = Snapshot.create(EmptyState.INSTANCE, Collections.<ReplicatedLogEntry>emptyList(),
1156 -1, -1, -1, -1, 5, "member-1", null);
1158 persistenceId = factory.generateActorId("test-actor-");
1160 raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
1161 .config(config).restoreFromSnapshot(snapshot)
1162 .persistent(Optional.of(Boolean.FALSE)).props()
1163 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1164 mockRaftActor = raftActorRef.underlyingActor();
1166 mockRaftActor.waitForRecoveryComplete();
1167 assertEquals("snapshot committed", true,
1168 Uninterruptibles.awaitUninterruptibly(mockRaftActor.snapshotCommitted, 5, TimeUnit.SECONDS));
1170 context = mockRaftActor.getRaftActorContext();
1171 assertEquals("Current term", 5L, context.getTermInformation().getCurrentTerm());
1172 assertEquals("Voted for", "member-1", context.getTermInformation().getVotedFor());
1174 TEST_LOG.info("testRestoreFromSnapshot ending");
1178 public void testRestoreFromSnapshotWithRecoveredData() throws Exception {
1179 TEST_LOG.info("testRestoreFromSnapshotWithRecoveredData starting");
1181 String persistenceId = factory.generateActorId("test-actor-");
1182 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1183 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1185 List<MockPayload> state = Arrays.asList(new MockRaftActorContext.MockPayload("A"));
1186 Snapshot snapshot = Snapshot.create(ByteState.of(fromObject(state).toByteArray()),
1187 Arrays.<ReplicatedLogEntry>asList(), 5, 2, 5, 2, 2, "member-1", null);
1189 InMemoryJournal.addEntry(persistenceId, 1, new SimpleReplicatedLogEntry(0, 1,
1190 new MockRaftActorContext.MockPayload("B")));
1192 TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
1193 .config(config).restoreFromSnapshot(snapshot).props()
1194 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1195 MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1197 mockRaftActor.waitForRecoveryComplete();
1199 Uninterruptibles.sleepUninterruptibly(500, TimeUnit.MILLISECONDS);
1200 verify(mockRaftActor.snapshotCohortDelegate, never()).applySnapshot(any(Snapshot.State.class));
1202 RaftActorContext context = mockRaftActor.getRaftActorContext();
1203 assertEquals("Journal log size", 1, context.getReplicatedLog().size());
1204 assertEquals("Last index", 0, context.getReplicatedLog().lastIndex());
1205 assertEquals("Last applied", -1, context.getLastApplied());
1206 assertEquals("Commit index", -1, context.getCommitIndex());
1207 assertEquals("Current term", 0, context.getTermInformation().getCurrentTerm());
1208 assertEquals("Voted for", null, context.getTermInformation().getVotedFor());
1210 TEST_LOG.info("testRestoreFromSnapshotWithRecoveredData ending");
1214 public void testNonVotingOnRecovery() {
1215 TEST_LOG.info("testNonVotingOnRecovery starting");
1217 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1218 config.setElectionTimeoutFactor(1);
1219 config.setHeartBeatInterval(FiniteDuration.create(1, TimeUnit.MILLISECONDS));
1221 String persistenceId = factory.generateActorId("test-actor-");
1222 InMemoryJournal.addEntry(persistenceId, 1, new SimpleReplicatedLogEntry(0, 1,
1223 new ServerConfigurationPayload(Arrays.asList(new ServerInfo(persistenceId, false)))));
1225 TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
1226 .config(config).props().withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1227 MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1229 mockRaftActor.waitForInitializeBehaviorComplete();
1231 // Sleep a bit and verify it didn't get an election timeout and schedule an election.
1233 Uninterruptibles.sleepUninterruptibly(400, TimeUnit.MILLISECONDS);
1234 assertEquals("getRaftState", RaftState.Follower, mockRaftActor.getRaftState());
1236 TEST_LOG.info("testNonVotingOnRecovery ending");
1240 public void testLeaderTransitioning() {
1241 TEST_LOG.info("testLeaderTransitioning starting");
1243 ActorRef notifierActor = factory.createActor(MessageCollectorActor.props());
1245 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1246 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1248 String persistenceId = factory.generateActorId("test-actor-");
1250 TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId)
1251 .config(config).roleChangeNotifier(notifierActor).props()
1252 .withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1253 MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1255 mockRaftActor.waitForInitializeBehaviorComplete();
1257 raftActorRef.tell(new AppendEntries(1L, "leader", 0L, 1L, Collections.<ReplicatedLogEntry>emptyList(),
1258 0L, -1L, (short)1), ActorRef.noSender());
1259 LeaderStateChanged leaderStateChange = MessageCollectorActor.expectFirstMatching(
1260 notifierActor, LeaderStateChanged.class);
1261 assertEquals("getLeaderId", "leader", leaderStateChange.getLeaderId());
1263 MessageCollectorActor.clearMessages(notifierActor);
1265 raftActorRef.tell(new LeaderTransitioning("leader"), ActorRef.noSender());
1267 leaderStateChange = MessageCollectorActor.expectFirstMatching(notifierActor, LeaderStateChanged.class);
1268 assertEquals("getMemberId", persistenceId, leaderStateChange.getMemberId());
1269 assertEquals("getLeaderId", null, leaderStateChange.getLeaderId());
1271 TEST_LOG.info("testLeaderTransitioning ending");
1274 @SuppressWarnings({ "unchecked", "rawtypes" })
1276 public void testReplicateWithPersistencePending() throws Exception {
1277 final String leaderId = factory.generateActorId("leader-");
1278 final String followerId = factory.generateActorId("follower-");
1280 final ActorRef followerActor = factory.createActor(MessageCollectorActor.props());
1282 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1283 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
1284 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
1286 DataPersistenceProvider mockPersistenceProvider = mock(DataPersistenceProvider.class);
1287 doReturn(true).when(mockPersistenceProvider).isRecoveryApplicable();
1289 TestActorRef<MockRaftActor> leaderActorRef = factory.createTestActor(
1290 MockRaftActor.props(leaderId, ImmutableMap.of(followerId, followerActor.path().toString()), config,
1291 mockPersistenceProvider), leaderId);
1292 MockRaftActor leaderActor = leaderActorRef.underlyingActor();
1293 leaderActor.waitForInitializeBehaviorComplete();
1295 leaderActor.getRaftActorContext().getTermInformation().update(1, leaderId);
1297 Leader leader = new Leader(leaderActor.getRaftActorContext());
1298 leaderActor.setCurrentBehavior(leader);
1300 leaderActor.persistData(leaderActorRef, new MockIdentifier("1"), new MockRaftActorContext.MockPayload("1"),
1303 ReplicatedLogEntry logEntry = leaderActor.getReplicatedLog().get(0);
1304 assertNotNull("ReplicatedLogEntry not found", logEntry);
1305 assertEquals("isPersistencePending", true, logEntry.isPersistencePending());
1306 assertEquals("getCommitIndex", -1, leaderActor.getRaftActorContext().getCommitIndex());
1308 leaderActor.handleCommand(new AppendEntriesReply(followerId, 1, true, 0, 1, (short)0));
1309 assertEquals("getCommitIndex", -1, leaderActor.getRaftActorContext().getCommitIndex());
1311 ArgumentCaptor<Procedure> callbackCaptor = ArgumentCaptor.forClass(Procedure.class);
1312 verify(mockPersistenceProvider).persistAsync(eq(logEntry), callbackCaptor.capture());
1314 callbackCaptor.getValue().apply(logEntry);
1316 assertEquals("getCommitIndex", 0, leaderActor.getRaftActorContext().getCommitIndex());
1317 assertEquals("getLastApplied", 0, leaderActor.getRaftActorContext().getLastApplied());
1321 public void testReplicateWithBatchHint() throws Exception {
1322 final String leaderId = factory.generateActorId("leader-");
1323 final String followerId = factory.generateActorId("follower-");
1325 final ActorRef followerActor = factory.createActor(MessageCollectorActor.props());
1327 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1328 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
1329 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
1331 TestActorRef<MockRaftActor> leaderActorRef = factory.createTestActor(
1332 MockRaftActor.props(leaderId, ImmutableMap.of(followerId, followerActor.path().toString()), config),
1334 MockRaftActor leaderActor = leaderActorRef.underlyingActor();
1335 leaderActor.waitForInitializeBehaviorComplete();
1337 leaderActor.getRaftActorContext().getTermInformation().update(1, leaderId);
1339 Leader leader = new Leader(leaderActor.getRaftActorContext());
1340 leaderActor.setCurrentBehavior(leader);
1342 MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class);
1343 MessageCollectorActor.clearMessages(followerActor);
1345 leaderActor.handleCommand(new AppendEntriesReply(followerId, 1, true, -1, -1, (short)0));
1347 leaderActor.persistData(leaderActorRef, new MockIdentifier("1"), new MockPayload("1"), true);
1348 MessageCollectorActor.assertNoneMatching(followerActor, AppendEntries.class, 500);
1350 leaderActor.persistData(leaderActorRef, new MockIdentifier("2"), new MockPayload("2"), true);
1351 MessageCollectorActor.assertNoneMatching(followerActor, AppendEntries.class, 500);
1353 leaderActor.persistData(leaderActorRef, new MockIdentifier("3"), new MockPayload("3"), false);
1354 AppendEntries appendEntries = MessageCollectorActor.expectFirstMatching(followerActor, AppendEntries.class);
1355 assertEquals("AppendEntries size", 3, appendEntries.getEntries().size());
1359 @SuppressWarnings("checkstyle:illegalcatch")
1360 public void testApplyStateRace() throws Exception {
1361 final String leaderId = factory.generateActorId("leader-");
1362 final String followerId = factory.generateActorId("follower-");
1364 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1365 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
1366 config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1368 ActorRef mockFollowerActorRef = factory.createActor(MessageCollectorActor.props());
1370 TestRaftActor.Builder builder = TestRaftActor.newBuilder()
1372 .peerAddresses(ImmutableMap.of(followerId,
1373 mockFollowerActorRef.path().toString()))
1375 .collectorActor(factory.createActor(
1376 MessageCollectorActor.props(), factory.generateActorId(leaderId + "-collector")));
1378 TestActorRef<MockRaftActor> leaderActorRef = factory.createTestActor(
1379 builder.props(), leaderId);
1380 MockRaftActor leaderActor = leaderActorRef.underlyingActor();
1381 leaderActor.waitForInitializeBehaviorComplete();
1383 leaderActor.getRaftActorContext().getTermInformation().update(1, leaderId);
1384 Leader leader = new Leader(leaderActor.getRaftActorContext());
1385 leaderActor.setCurrentBehavior(leader);
1387 final ExecutorService executorService = Executors.newSingleThreadExecutor();
1389 leaderActor.setPersistence(new PersistentDataProvider(leaderActor) {
1391 public <T> void persistAsync(final T entry, final Procedure<T> procedure) {
1392 // needs to be executed from another thread to simulate the persistence actor calling this callback
1393 executorService.submit(() -> {
1395 procedure.apply(entry);
1396 } catch (Exception e) {
1397 TEST_LOG.info("Fail during async persist callback", e);
1399 }, "persistence-callback");
1403 leader.getFollower(followerId).setNextIndex(0);
1404 leader.getFollower(followerId).setMatchIndex(-1);
1406 // hitting this is flimsy so run multiple times to improve the chance of things
1407 // blowing up while breaking actor containment
1408 final TestPersist message =
1409 new TestPersist(leaderActorRef, new MockIdentifier("1"), new MockPayload("1"));
1410 for (int i = 0; i < 100; i++) {
1411 leaderActorRef.tell(message, null);
1413 AppendEntriesReply reply =
1414 new AppendEntriesReply(followerId, 1, true, i, 1, (short) 5);
1415 leaderActorRef.tell(reply, mockFollowerActorRef);
1418 await("Persistence callback.").atMost(5, TimeUnit.SECONDS).until(() -> leaderActor.getState().size() == 100);
1419 executorService.shutdown();