opendaylight/md-sal/sal-akka-raft/src/test/java/org/opendaylight/controller/cluster/raft/RaftActorTest.java

   1 /*
   2  * Copyright (c) 2014, 2015 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8
   9 package org.opendaylight.controller.cluster.raft;
  10
  11 import static org.junit.Assert.assertArrayEquals;
  12 import static org.junit.Assert.assertEquals;
  13 import static org.junit.Assert.assertNotNull;
  14 import static org.junit.Assert.assertNotSame;
  15 import static org.junit.Assert.assertNull;
  16 import static org.junit.Assert.assertSame;
  17 import static org.junit.Assert.assertTrue;
  18 import static org.mockito.Matchers.any;
  19 import static org.mockito.Matchers.anyObject;
  20 import static org.mockito.Matchers.eq;
  21 import static org.mockito.Matchers.same;
  22 import static org.mockito.Mockito.doReturn;
  23 import static org.mockito.Mockito.mock;
  24 import static org.mockito.Mockito.never;
  25 import static org.mockito.Mockito.reset;
  26 import static org.mockito.Mockito.timeout;
  27 import static org.mockito.Mockito.verify;
  28 import akka.actor.ActorRef;
  29 import akka.actor.PoisonPill;
  30 import akka.actor.Props;
  31 import akka.actor.Status.Failure;
  32 import akka.actor.Terminated;
  33 import akka.dispatch.Dispatchers;
  34 import akka.japi.Procedure;
  35 import akka.persistence.SaveSnapshotFailure;
  36 import akka.persistence.SaveSnapshotSuccess;
  37 import akka.persistence.SnapshotMetadata;
  38 import akka.persistence.SnapshotOffer;
  39 import akka.testkit.JavaTestKit;
  40 import akka.testkit.TestActorRef;
  41 import com.google.common.base.Optional;
  42 import com.google.common.collect.ImmutableMap;
  43 import com.google.common.util.concurrent.Uninterruptibles;
  44 import com.google.protobuf.ByteString;
  45 import java.io.ByteArrayOutputStream;
  46 import java.io.ObjectOutputStream;
  47 import java.util.ArrayList;
  48 import java.util.Arrays;
  49 import java.util.Collections;
  50 import java.util.HashMap;
  51 import java.util.List;
  52 import java.util.Map;
  53 import java.util.concurrent.TimeUnit;
  54 import java.util.concurrent.TimeoutException;
  55 import org.apache.commons.lang3.SerializationUtils;
  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.MockRaftActorContext.MockPayload;
  66 import org.opendaylight.controller.cluster.raft.ServerConfigurationPayload.ServerInfo;
  67 import org.opendaylight.controller.cluster.raft.base.messages.ApplyJournalEntries;
  68 import org.opendaylight.controller.cluster.raft.base.messages.ApplyLogEntries;
  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.CaptureSnapshot;
  72 import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshotReply;
  73 import org.opendaylight.controller.cluster.raft.base.messages.DeleteEntries;
  74 import org.opendaylight.controller.cluster.raft.base.messages.LeaderTransitioning;
  75 import org.opendaylight.controller.cluster.raft.base.messages.SendHeartBeat;
  76 import org.opendaylight.controller.cluster.raft.base.messages.SwitchBehavior;
  77 import org.opendaylight.controller.cluster.raft.base.messages.UpdateElectionTerm;
  78 import org.opendaylight.controller.cluster.raft.behaviors.Follower;
  79 import org.opendaylight.controller.cluster.raft.behaviors.Leader;
  80 import org.opendaylight.controller.cluster.raft.behaviors.RaftActorBehavior;
  81 import org.opendaylight.controller.cluster.raft.client.messages.GetSnapshot;
  82 import org.opendaylight.controller.cluster.raft.client.messages.GetSnapshotReply;
  83 import org.opendaylight.controller.cluster.raft.messages.AppendEntries;
  84 import org.opendaylight.controller.cluster.raft.messages.AppendEntriesReply;
  85 import org.opendaylight.controller.cluster.raft.policy.DisableElectionsRaftPolicy;
  86 import org.opendaylight.controller.cluster.raft.utils.InMemoryJournal;
  87 import org.opendaylight.controller.cluster.raft.utils.InMemorySnapshotStore;
  88 import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
  89 import org.slf4j.Logger;
  90 import org.slf4j.LoggerFactory;
  91 import scala.concurrent.duration.Duration;
  92 import scala.concurrent.duration.FiniteDuration;
  93
  94 public class RaftActorTest extends AbstractActorTest {
  95
  96     static final Logger TEST_LOG = LoggerFactory.getLogger(RaftActorTest.class);
  97
  98     private TestActorFactory factory;
  99
 100     @Before
 101     public void setUp(){
 102         factory = new TestActorFactory(getSystem());
 103     }
 104
 105     @After
 106     public void tearDown() throws Exception {
 107         factory.close();
 108         InMemoryJournal.clear();
 109         InMemorySnapshotStore.clear();
 110     }
 111
 112     @Test
 113     public void testConstruction() {
 114         new RaftActorTestKit(getSystem(), "testConstruction").waitUntilLeader();
 115     }
 116
 117     @Test
 118     public void testFindLeaderWhenLeaderIsSelf(){
 119         RaftActorTestKit kit = new RaftActorTestKit(getSystem(), "testFindLeader");
 120         kit.waitUntilLeader();
 121     }
 122
 123
 124     @Test
 125     public void testRaftActorRecoveryWithPersistenceEnabled() throws Exception {
 126         TEST_LOG.info("testRaftActorRecoveryWithPersistenceEnabled starting");
 127
 128         new JavaTestKit(getSystem()) {{
 129             String persistenceId = factory.generateActorId("follower-");
 130
 131             DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 132
 133             // Set the heartbeat interval high to essentially disable election otherwise the test
 134             // may fail if the actor is switched to Leader and the commitIndex is set to the last
 135             // log entry.
 136             config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 137
 138             ImmutableMap<String, String> peerAddresses = ImmutableMap.<String, String>builder().put("member1", "address").build();
 139             ActorRef followerActor = factory.createActor(MockRaftActor.props(persistenceId,
 140                     peerAddresses, config), persistenceId);
 141
 142             watch(followerActor);
 143
 144             List<ReplicatedLogEntry> snapshotUnappliedEntries = new ArrayList<>();
 145             ReplicatedLogEntry entry1 = new MockRaftActorContext.MockReplicatedLogEntry(1, 4,
 146                     new MockRaftActorContext.MockPayload("E"));
 147             snapshotUnappliedEntries.add(entry1);
 148
 149             int lastAppliedDuringSnapshotCapture = 3;
 150             int lastIndexDuringSnapshotCapture = 4;
 151
 152             // 4 messages as part of snapshot, which are applied to state
 153             ByteString snapshotBytes = fromObject(Arrays.asList(
 154                     new MockRaftActorContext.MockPayload("A"),
 155                     new MockRaftActorContext.MockPayload("B"),
 156                     new MockRaftActorContext.MockPayload("C"),
 157                     new MockRaftActorContext.MockPayload("D")));
 158
 159             Snapshot snapshot = Snapshot.create(snapshotBytes.toByteArray(),
 160                     snapshotUnappliedEntries, lastIndexDuringSnapshotCapture, 1,
 161                     lastAppliedDuringSnapshotCapture, 1);
 162             InMemorySnapshotStore.addSnapshot(persistenceId, snapshot);
 163
 164             // add more entries after snapshot is taken
 165             List<ReplicatedLogEntry> entries = new ArrayList<>();
 166             ReplicatedLogEntry entry2 = new MockRaftActorContext.MockReplicatedLogEntry(1, 5,
 167                     new MockRaftActorContext.MockPayload("F", 2));
 168             ReplicatedLogEntry entry3 = new MockRaftActorContext.MockReplicatedLogEntry(1, 6,
 169                     new MockRaftActorContext.MockPayload("G", 3));
 170             ReplicatedLogEntry entry4 = new MockRaftActorContext.MockReplicatedLogEntry(1, 7,
 171                     new MockRaftActorContext.MockPayload("H", 4));
 172             entries.add(entry2);
 173             entries.add(entry3);
 174             entries.add(entry4);
 175
 176             int lastAppliedToState = 5;
 177             int lastIndex = 7;
 178
 179             InMemoryJournal.addEntry(persistenceId, 5, entry2);
 180             // 2 entries are applied to state besides the 4 entries in snapshot
 181             InMemoryJournal.addEntry(persistenceId, 6, new ApplyJournalEntries(lastAppliedToState));
 182             InMemoryJournal.addEntry(persistenceId, 7, entry3);
 183             InMemoryJournal.addEntry(persistenceId, 8, entry4);
 184
 185             // kill the actor
 186             followerActor.tell(PoisonPill.getInstance(), null);
 187             expectMsgClass(duration("5 seconds"), Terminated.class);
 188
 189             unwatch(followerActor);
 190
 191             //reinstate the actor
 192             TestActorRef<MockRaftActor> ref = factory.createTestActor(
 193                     MockRaftActor.props(persistenceId, peerAddresses, config));
 194
 195             MockRaftActor mockRaftActor = ref.underlyingActor();
 196
 197             mockRaftActor.waitForRecoveryComplete();
 198
 199             RaftActorContext context = mockRaftActor.getRaftActorContext();
 200             assertEquals("Journal log size", snapshotUnappliedEntries.size() + entries.size(),
 201                     context.getReplicatedLog().size());
 202             assertEquals("Journal data size", 10, context.getReplicatedLog().dataSize());
 203             assertEquals("Last index", lastIndex, context.getReplicatedLog().lastIndex());
 204             assertEquals("Last applied", lastAppliedToState, context.getLastApplied());
 205             assertEquals("Commit index", lastAppliedToState, context.getCommitIndex());
 206             assertEquals("Recovered state size", 6, mockRaftActor.getState().size());
 207
 208             mockRaftActor.waitForInitializeBehaviorComplete();
 209
 210             assertEquals("getRaftState", RaftState.Follower, mockRaftActor.getRaftState());
 211         }};
 212
 213         TEST_LOG.info("testRaftActorRecoveryWithPersistenceEnabled ending");
 214     }
 215
 216     @Test
 217     public void testRaftActorRecoveryWithPersistenceDisabled() throws Exception {
 218         new JavaTestKit(getSystem()) {{
 219             String persistenceId = factory.generateActorId("follower-");
 220
 221             DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 222
 223             config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 224
 225             TestActorRef<MockRaftActor> ref = factory.createTestActor(MockRaftActor.props(persistenceId,
 226                     ImmutableMap.<String, String>builder().put("member1", "address").build(),
 227                     config, new NonPersistentDataProvider()), persistenceId);
 228
 229             MockRaftActor mockRaftActor = ref.underlyingActor();
 230
 231             mockRaftActor.waitForRecoveryComplete();
 232
 233             mockRaftActor.waitForInitializeBehaviorComplete();
 234
 235             assertEquals("getRaftState", RaftState.Follower, mockRaftActor.getRaftState());
 236         }};
 237     }
 238
 239     @Test
 240     public void testUpdateElectionTermPersistedWithPersistenceDisabled() throws Exception {
 241         new JavaTestKit(getSystem()) {{
 242             String persistenceId = factory.generateActorId("follower-");
 243             DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 244             config.setHeartBeatInterval(new FiniteDuration(100, TimeUnit.MILLISECONDS));
 245             config.setElectionTimeoutFactor(1);
 246
 247             InMemoryJournal.addWriteMessagesCompleteLatch(persistenceId, 1);
 248
 249             TestActorRef<MockRaftActor> ref = factory.createTestActor(MockRaftActor.props(persistenceId,
 250                     ImmutableMap.<String, String>builder().put("member1", "address").build(),
 251                     config, new NonPersistentDataProvider()).
 252                             withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
 253
 254             InMemoryJournal.waitForWriteMessagesComplete(persistenceId);
 255             List<UpdateElectionTerm> entries = InMemoryJournal.get(persistenceId, UpdateElectionTerm.class);
 256             assertEquals("UpdateElectionTerm entries", 1, entries.size());
 257             UpdateElectionTerm updateEntry = entries.get(0);
 258
 259             factory.killActor(ref, this);
 260
 261             config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 262             ref = factory.createTestActor(MockRaftActor.props(persistenceId,
 263                     ImmutableMap.<String, String>builder().put("member1", "address").build(), config,
 264                     new NonPersistentDataProvider()).
 265                             withDispatcher(Dispatchers.DefaultDispatcherId()),
 266                             factory.generateActorId("follower-"));
 267
 268             MockRaftActor actor = ref.underlyingActor();
 269             actor.waitForRecoveryComplete();
 270
 271             RaftActorContext newContext = actor.getRaftActorContext();
 272             assertEquals("electionTerm", updateEntry.getCurrentTerm(),
 273                     newContext.getTermInformation().getCurrentTerm());
 274             assertEquals("votedFor", updateEntry.getVotedFor(), newContext.getTermInformation().getVotedFor());
 275
 276             entries = InMemoryJournal.get(persistenceId, UpdateElectionTerm.class);
 277             assertEquals("UpdateElectionTerm entries", 1, entries.size());
 278         }};
 279     }
 280
 281     @Test
 282     public void testRaftActorForwardsToRaftActorRecoverySupport() {
 283         String persistenceId = factory.generateActorId("leader-");
 284
 285         DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 286
 287         config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 288
 289         TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
 290                 Collections.<String, String>emptyMap(), config), persistenceId);
 291
 292         MockRaftActor mockRaftActor = mockActorRef.underlyingActor();
 293
 294         // Wait for akka's recovery to complete so it doesn't interfere.
 295         mockRaftActor.waitForRecoveryComplete();
 296
 297         RaftActorRecoverySupport mockSupport = mock(RaftActorRecoverySupport.class);
 298         mockRaftActor.setRaftActorRecoverySupport(mockSupport );
 299
 300         Snapshot snapshot = Snapshot.create(new byte[]{1}, Collections.<ReplicatedLogEntry>emptyList(), 3, 1, 3, 1);
 301         SnapshotOffer snapshotOffer = new SnapshotOffer(new SnapshotMetadata("test", 6, 12345), snapshot);
 302         mockRaftActor.handleRecover(snapshotOffer);
 303
 304         MockRaftActorContext.MockReplicatedLogEntry logEntry = new MockRaftActorContext.MockReplicatedLogEntry(1,
 305                 1, new MockRaftActorContext.MockPayload("1", 5));
 306         mockRaftActor.handleRecover(logEntry);
 307
 308         ApplyJournalEntries applyJournalEntries = new ApplyJournalEntries(2);
 309         mockRaftActor.handleRecover(applyJournalEntries);
 310
 311         ApplyLogEntries applyLogEntries = new ApplyLogEntries(0);
 312         mockRaftActor.handleRecover(applyLogEntries);
 313
 314         DeleteEntries deleteEntries = new DeleteEntries(1);
 315         mockRaftActor.handleRecover(deleteEntries);
 316
 317         org.opendaylight.controller.cluster.raft.RaftActor.DeleteEntries deprecatedDeleteEntries =
 318                 new org.opendaylight.controller.cluster.raft.RaftActor.DeleteEntries(1);
 319         mockRaftActor.handleRecover(deprecatedDeleteEntries);
 320
 321         UpdateElectionTerm updateElectionTerm = new UpdateElectionTerm(5, "member2");
 322         mockRaftActor.handleRecover(updateElectionTerm);
 323
 324         org.opendaylight.controller.cluster.raft.RaftActor.UpdateElectionTerm deprecatedUpdateElectionTerm =
 325                 new org.opendaylight.controller.cluster.raft.RaftActor.UpdateElectionTerm(6, "member3");
 326         mockRaftActor.handleRecover(deprecatedUpdateElectionTerm);
 327
 328         verify(mockSupport).handleRecoveryMessage(same(snapshotOffer), any(PersistentDataProvider.class));
 329         verify(mockSupport).handleRecoveryMessage(same(logEntry), any(PersistentDataProvider.class));
 330         verify(mockSupport).handleRecoveryMessage(same(applyJournalEntries), any(PersistentDataProvider.class));
 331         verify(mockSupport).handleRecoveryMessage(same(applyLogEntries), any(PersistentDataProvider.class));
 332         verify(mockSupport).handleRecoveryMessage(same(deleteEntries), any(PersistentDataProvider.class));
 333         verify(mockSupport).handleRecoveryMessage(same(deprecatedDeleteEntries), any(PersistentDataProvider.class));
 334         verify(mockSupport).handleRecoveryMessage(same(updateElectionTerm), any(PersistentDataProvider.class));
 335         verify(mockSupport).handleRecoveryMessage(same(deprecatedUpdateElectionTerm), any(PersistentDataProvider.class));
 336     }
 337
 338     @Test
 339     public void testRaftActorForwardsToRaftActorSnapshotMessageSupport() {
 340         String persistenceId = factory.generateActorId("leader-");
 341
 342         DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 343
 344         config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 345
 346         RaftActorSnapshotMessageSupport mockSupport = mock(RaftActorSnapshotMessageSupport.class);
 347
 348         TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId).
 349                 config(config).snapshotMessageSupport(mockSupport).props());
 350
 351         MockRaftActor mockRaftActor = mockActorRef.underlyingActor();
 352
 353         // Wait for akka's recovery to complete so it doesn't interfere.
 354         mockRaftActor.waitForRecoveryComplete();
 355
 356         ApplySnapshot applySnapshot = new ApplySnapshot(mock(Snapshot.class));
 357         doReturn(true).when(mockSupport).handleSnapshotMessage(same(applySnapshot), any(ActorRef.class));
 358         mockRaftActor.handleCommand(applySnapshot);
 359
 360         CaptureSnapshot captureSnapshot = new CaptureSnapshot(1, 1, 1, 1, 0, 1, null);
 361         doReturn(true).when(mockSupport).handleSnapshotMessage(same(captureSnapshot), any(ActorRef.class));
 362         mockRaftActor.handleCommand(captureSnapshot);
 363
 364         CaptureSnapshotReply captureSnapshotReply = new CaptureSnapshotReply(new byte[0]);
 365         doReturn(true).when(mockSupport).handleSnapshotMessage(same(captureSnapshotReply), any(ActorRef.class));
 366         mockRaftActor.handleCommand(captureSnapshotReply);
 367
 368         SaveSnapshotSuccess saveSnapshotSuccess = new SaveSnapshotSuccess(mock(SnapshotMetadata.class));
 369         doReturn(true).when(mockSupport).handleSnapshotMessage(same(saveSnapshotSuccess), any(ActorRef.class));
 370         mockRaftActor.handleCommand(saveSnapshotSuccess);
 371
 372         SaveSnapshotFailure saveSnapshotFailure = new SaveSnapshotFailure(mock(SnapshotMetadata.class), new Throwable());
 373         doReturn(true).when(mockSupport).handleSnapshotMessage(same(saveSnapshotFailure), any(ActorRef.class));
 374         mockRaftActor.handleCommand(saveSnapshotFailure);
 375
 376         doReturn(true).when(mockSupport).handleSnapshotMessage(same(RaftActorSnapshotMessageSupport.COMMIT_SNAPSHOT),
 377                 any(ActorRef.class));
 378         mockRaftActor.handleCommand(RaftActorSnapshotMessageSupport.COMMIT_SNAPSHOT);
 379
 380         doReturn(true).when(mockSupport).handleSnapshotMessage(same(GetSnapshot.INSTANCE), any(ActorRef.class));
 381         mockRaftActor.handleCommand(GetSnapshot.INSTANCE);
 382
 383         verify(mockSupport).handleSnapshotMessage(same(applySnapshot), any(ActorRef.class));
 384         verify(mockSupport).handleSnapshotMessage(same(captureSnapshot), any(ActorRef.class));
 385         verify(mockSupport).handleSnapshotMessage(same(captureSnapshotReply), any(ActorRef.class));
 386         verify(mockSupport).handleSnapshotMessage(same(saveSnapshotSuccess), any(ActorRef.class));
 387         verify(mockSupport).handleSnapshotMessage(same(saveSnapshotFailure), any(ActorRef.class));
 388         verify(mockSupport).handleSnapshotMessage(same(RaftActorSnapshotMessageSupport.COMMIT_SNAPSHOT),
 389                 any(ActorRef.class));
 390         verify(mockSupport).handleSnapshotMessage(same(GetSnapshot.INSTANCE), any(ActorRef.class));
 391     }
 392
 393     @Test
 394     public void testApplyJournalEntriesCallsDataPersistence() throws Exception {
 395         new JavaTestKit(getSystem()) {
 396             {
 397                 String persistenceId = factory.generateActorId("leader-");
 398
 399                 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 400
 401                 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 402
 403                 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
 404
 405                 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
 406                         Collections.<String, String>emptyMap(), config, dataPersistenceProvider), persistenceId);
 407
 408                 MockRaftActor mockRaftActor = mockActorRef.underlyingActor();
 409
 410                 mockRaftActor.waitForInitializeBehaviorComplete();
 411
 412                 mockRaftActor.waitUntilLeader();
 413
 414                 mockRaftActor.onReceiveCommand(new ApplyJournalEntries(10));
 415
 416                 verify(dataPersistenceProvider).persist(any(ApplyJournalEntries.class), any(Procedure.class));
 417
 418             }
 419
 420         };
 421     }
 422
 423     @Test
 424     public void testApplyState() throws Exception {
 425
 426         new JavaTestKit(getSystem()) {
 427             {
 428                 String persistenceId = factory.generateActorId("leader-");
 429
 430                 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 431
 432                 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 433
 434                 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
 435
 436                 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
 437                         Collections.<String, String>emptyMap(), config, dataPersistenceProvider), persistenceId);
 438
 439                 MockRaftActor mockRaftActor = mockActorRef.underlyingActor();
 440
 441                 mockRaftActor.waitForInitializeBehaviorComplete();
 442
 443                 ReplicatedLogEntry entry = new MockRaftActorContext.MockReplicatedLogEntry(1, 5,
 444                         new MockRaftActorContext.MockPayload("F"));
 445
 446                 mockRaftActor.onReceiveCommand(new ApplyState(mockActorRef, "apply-state", entry));
 447
 448                 verify(mockRaftActor.actorDelegate).applyState(eq(mockActorRef), eq("apply-state"), anyObject());
 449
 450             }
 451         };
 452     }
 453
 454     @Test
 455     public void testRaftRoleChangeNotifierWhenRaftActorHasNoPeers() throws Exception {
 456         new JavaTestKit(getSystem()) {{
 457             TestActorRef<MessageCollectorActor> notifierActor = factory.createTestActor(
 458                     Props.create(MessageCollectorActor.class));
 459             MessageCollectorActor.waitUntilReady(notifierActor);
 460
 461             DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 462             long heartBeatInterval = 100;
 463             config.setHeartBeatInterval(FiniteDuration.create(heartBeatInterval, TimeUnit.MILLISECONDS));
 464             config.setElectionTimeoutFactor(20);
 465
 466             String persistenceId = factory.generateActorId("notifier-");
 467
 468             TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId).
 469                     config(config).roleChangeNotifier(notifierActor).dataPersistenceProvider(
 470                             new NonPersistentDataProvider()).props().withDispatcher(Dispatchers.DefaultDispatcherId()),
 471                             persistenceId);
 472
 473             List<RoleChanged> matches =  MessageCollectorActor.expectMatching(notifierActor, RoleChanged.class, 3);
 474
 475
 476             // check if the notifier got a role change from null to Follower
 477             RoleChanged raftRoleChanged = matches.get(0);
 478             assertEquals(persistenceId, raftRoleChanged.getMemberId());
 479             assertNull(raftRoleChanged.getOldRole());
 480             assertEquals(RaftState.Follower.name(), raftRoleChanged.getNewRole());
 481
 482             // check if the notifier got a role change from Follower to Candidate
 483             raftRoleChanged = matches.get(1);
 484             assertEquals(persistenceId, raftRoleChanged.getMemberId());
 485             assertEquals(RaftState.Follower.name(), raftRoleChanged.getOldRole());
 486             assertEquals(RaftState.Candidate.name(), raftRoleChanged.getNewRole());
 487
 488             // check if the notifier got a role change from Candidate to Leader
 489             raftRoleChanged = matches.get(2);
 490             assertEquals(persistenceId, raftRoleChanged.getMemberId());
 491             assertEquals(RaftState.Candidate.name(), raftRoleChanged.getOldRole());
 492             assertEquals(RaftState.Leader.name(), raftRoleChanged.getNewRole());
 493
 494             LeaderStateChanged leaderStateChange = MessageCollectorActor.expectFirstMatching(
 495                     notifierActor, LeaderStateChanged.class);
 496
 497             assertEquals(raftRoleChanged.getMemberId(), leaderStateChange.getLeaderId());
 498             assertEquals(MockRaftActor.PAYLOAD_VERSION, leaderStateChange.getLeaderPayloadVersion());
 499
 500             notifierActor.underlyingActor().clear();
 501
 502             MockRaftActor raftActor = raftActorRef.underlyingActor();
 503             final String newLeaderId = "new-leader";
 504             final short newLeaderVersion = 6;
 505             Follower follower = new Follower(raftActor.getRaftActorContext()) {
 506                 @Override
 507                 public RaftActorBehavior handleMessage(ActorRef sender, Object message) {
 508                     leaderId = newLeaderId;
 509                     setLeaderPayloadVersion(newLeaderVersion);
 510                     return this;
 511                 }
 512             };
 513
 514             raftActor.newBehavior(follower);
 515
 516             leaderStateChange = MessageCollectorActor.expectFirstMatching(notifierActor, LeaderStateChanged.class);
 517             assertEquals(persistenceId, leaderStateChange.getMemberId());
 518             assertEquals(null, leaderStateChange.getLeaderId());
 519
 520             raftRoleChanged = MessageCollectorActor.expectFirstMatching(notifierActor, RoleChanged.class);
 521             assertEquals(RaftState.Leader.name(), raftRoleChanged.getOldRole());
 522             assertEquals(RaftState.Follower.name(), raftRoleChanged.getNewRole());
 523
 524             notifierActor.underlyingActor().clear();
 525
 526             raftActor.handleCommand("any");
 527
 528             leaderStateChange = MessageCollectorActor.expectFirstMatching(notifierActor, LeaderStateChanged.class);
 529             assertEquals(persistenceId, leaderStateChange.getMemberId());
 530             assertEquals(newLeaderId, leaderStateChange.getLeaderId());
 531             assertEquals(newLeaderVersion, leaderStateChange.getLeaderPayloadVersion());
 532
 533             notifierActor.underlyingActor().clear();
 534
 535             raftActor.handleCommand("any");
 536
 537             Uninterruptibles.sleepUninterruptibly(505, TimeUnit.MILLISECONDS);
 538             leaderStateChange = MessageCollectorActor.getFirstMatching(notifierActor, LeaderStateChanged.class);
 539             assertNull(leaderStateChange);
 540         }};
 541     }
 542
 543     @Test
 544     public void testRaftRoleChangeNotifierWhenRaftActorHasPeers() throws Exception {
 545         new JavaTestKit(getSystem()) {{
 546             ActorRef notifierActor = factory.createActor(Props.create(MessageCollectorActor.class));
 547             MessageCollectorActor.waitUntilReady(notifierActor);
 548
 549             DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 550             long heartBeatInterval = 100;
 551             config.setHeartBeatInterval(FiniteDuration.create(heartBeatInterval, TimeUnit.MILLISECONDS));
 552             config.setElectionTimeoutFactor(1);
 553
 554             String persistenceId = factory.generateActorId("notifier-");
 555
 556             factory.createActor(MockRaftActor.builder().id(persistenceId).
 557                     peerAddresses(ImmutableMap.of("leader", "fake/path")).
 558                     config(config).roleChangeNotifier(notifierActor).props());
 559
 560             List<RoleChanged> matches =  null;
 561             for(int i = 0; i < 5000 / heartBeatInterval; i++) {
 562                 matches = MessageCollectorActor.getAllMatching(notifierActor, RoleChanged.class);
 563                 assertNotNull(matches);
 564                 if(matches.size() == 3) {
 565                     break;
 566                 }
 567                 Uninterruptibles.sleepUninterruptibly(heartBeatInterval, TimeUnit.MILLISECONDS);
 568             }
 569
 570             assertNotNull(matches);
 571             assertEquals(2, matches.size());
 572
 573             // check if the notifier got a role change from null to Follower
 574             RoleChanged raftRoleChanged = matches.get(0);
 575             assertEquals(persistenceId, raftRoleChanged.getMemberId());
 576             assertNull(raftRoleChanged.getOldRole());
 577             assertEquals(RaftState.Follower.name(), raftRoleChanged.getNewRole());
 578
 579             // check if the notifier got a role change from Follower to Candidate
 580             raftRoleChanged = matches.get(1);
 581             assertEquals(persistenceId, raftRoleChanged.getMemberId());
 582             assertEquals(RaftState.Follower.name(), raftRoleChanged.getOldRole());
 583             assertEquals(RaftState.Candidate.name(), raftRoleChanged.getNewRole());
 584
 585         }};
 586     }
 587
 588     @Test
 589     public void testFakeSnapshotsForLeaderWithInRealSnapshots() throws Exception {
 590         new JavaTestKit(getSystem()) {
 591             {
 592                 String persistenceId = factory.generateActorId("leader-");
 593                 String follower1Id = factory.generateActorId("follower-");
 594
 595                 ActorRef followerActor1 =
 596                         factory.createActor(Props.create(MessageCollectorActor.class));
 597
 598                 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 599                 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 600                 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
 601
 602                 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
 603
 604                 Map<String, String> peerAddresses = new HashMap<>();
 605                 peerAddresses.put(follower1Id, followerActor1.path().toString());
 606
 607                 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
 608                         MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
 609
 610                 MockRaftActor leaderActor = mockActorRef.underlyingActor();
 611
 612                 leaderActor.getRaftActorContext().setCommitIndex(4);
 613                 leaderActor.getRaftActorContext().setLastApplied(4);
 614                 leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
 615
 616                 leaderActor.waitForInitializeBehaviorComplete();
 617
 618                 // create 8 entries in the log - 0 to 4 are applied and will get picked up as part of the capture snapshot
 619
 620                 Leader leader = new Leader(leaderActor.getRaftActorContext());
 621                 leaderActor.setCurrentBehavior(leader);
 622                 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
 623
 624                 MockRaftActorContext.MockReplicatedLogBuilder logBuilder = new MockRaftActorContext.MockReplicatedLogBuilder();
 625                 leaderActor.getRaftActorContext().setReplicatedLog(logBuilder.createEntries(0, 8, 1).build());
 626
 627                 assertEquals(8, leaderActor.getReplicatedLog().size());
 628
 629                 leaderActor.getRaftActorContext().getSnapshotManager()
 630                         .capture(new MockRaftActorContext.MockReplicatedLogEntry(1, 6,
 631                                 new MockRaftActorContext.MockPayload("x")), 4);
 632
 633                 verify(leaderActor.snapshotCohortDelegate).createSnapshot(any(ActorRef.class));
 634
 635                 assertEquals(8, leaderActor.getReplicatedLog().size());
 636
 637                 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
 638                 //fake snapshot on index 5
 639                 leaderActor.onReceiveCommand(new AppendEntriesReply(follower1Id, 1, true, 5, 1, (short)0));
 640
 641                 assertEquals(8, leaderActor.getReplicatedLog().size());
 642
 643                 //fake snapshot on index 6
 644                 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
 645                 leaderActor.onReceiveCommand(new AppendEntriesReply(follower1Id, 1, true, 6, 1, (short)0));
 646                 assertEquals(8, leaderActor.getReplicatedLog().size());
 647
 648                 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
 649
 650                 assertEquals(8, leaderActor.getReplicatedLog().size());
 651
 652                 ByteString snapshotBytes = fromObject(Arrays.asList(
 653                         new MockRaftActorContext.MockPayload("foo-0"),
 654                         new MockRaftActorContext.MockPayload("foo-1"),
 655                         new MockRaftActorContext.MockPayload("foo-2"),
 656                         new MockRaftActorContext.MockPayload("foo-3"),
 657                         new MockRaftActorContext.MockPayload("foo-4")));
 658
 659                 leaderActor.getRaftActorContext().getSnapshotManager().persist(snapshotBytes.toByteArray(),
 660                         leader, Runtime.getRuntime().totalMemory());
 661
 662                 assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
 663
 664                 // The commit is needed to complete the snapshot creation process
 665                 leaderActor.getRaftActorContext().getSnapshotManager().commit(-1, leader);
 666
 667                 // capture snapshot reply should remove the snapshotted entries only
 668                 assertEquals(3, leaderActor.getReplicatedLog().size());
 669                 assertEquals(7, leaderActor.getReplicatedLog().lastIndex());
 670
 671                 // add another non-replicated entry
 672                 leaderActor.getReplicatedLog().append(
 673                         new ReplicatedLogImplEntry(8, 1, new MockRaftActorContext.MockPayload("foo-8")));
 674
 675                 //fake snapshot on index 7, since lastApplied = 7 , we would keep the last applied
 676                 leaderActor.onReceiveCommand(new AppendEntriesReply(follower1Id, 1, true, 7, 1, (short)0));
 677                 assertEquals(2, leaderActor.getReplicatedLog().size());
 678                 assertEquals(8, leaderActor.getReplicatedLog().lastIndex());
 679
 680             }
 681         };
 682     }
 683
 684     @Test
 685     public void testFakeSnapshotsForFollowerWithInRealSnapshots() throws Exception {
 686         new JavaTestKit(getSystem()) {
 687             {
 688                 String persistenceId = factory.generateActorId("follower-");
 689                 String leaderId = factory.generateActorId("leader-");
 690
 691
 692                 ActorRef leaderActor1 =
 693                         factory.createActor(Props.create(MessageCollectorActor.class));
 694
 695                 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 696                 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 697                 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
 698
 699                 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
 700
 701                 Map<String, String> peerAddresses = new HashMap<>();
 702                 peerAddresses.put(leaderId, leaderActor1.path().toString());
 703
 704                 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
 705                         MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
 706
 707                 MockRaftActor followerActor = mockActorRef.underlyingActor();
 708                 followerActor.getRaftActorContext().setCommitIndex(4);
 709                 followerActor.getRaftActorContext().setLastApplied(4);
 710                 followerActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
 711
 712                 followerActor.waitForInitializeBehaviorComplete();
 713
 714
 715                 Follower follower = new Follower(followerActor.getRaftActorContext());
 716                 followerActor.setCurrentBehavior(follower);
 717                 assertEquals(RaftState.Follower, followerActor.getCurrentBehavior().state());
 718
 719                 // create 6 entries in the log - 0 to 4 are applied and will get picked up as part of the capture snapshot
 720                 MockRaftActorContext.MockReplicatedLogBuilder logBuilder = new MockRaftActorContext.MockReplicatedLogBuilder();
 721                 followerActor.getRaftActorContext().setReplicatedLog(logBuilder.createEntries(0, 6, 1).build());
 722
 723                 // log has indices 0-5
 724                 assertEquals(6, followerActor.getReplicatedLog().size());
 725
 726                 //snapshot on 4
 727                 followerActor.getRaftActorContext().getSnapshotManager().capture(
 728                         new MockRaftActorContext.MockReplicatedLogEntry(1, 5,
 729                                 new MockRaftActorContext.MockPayload("D")), 4);
 730
 731                 verify(followerActor.snapshotCohortDelegate).createSnapshot(any(ActorRef.class));
 732
 733                 assertEquals(6, followerActor.getReplicatedLog().size());
 734
 735                 //fake snapshot on index 6
 736                 List<ReplicatedLogEntry> entries =
 737                         Arrays.asList(
 738                                 (ReplicatedLogEntry) new MockRaftActorContext.MockReplicatedLogEntry(1, 6,
 739                                         new MockRaftActorContext.MockPayload("foo-6"))
 740                         );
 741                 followerActor.onReceiveCommand(new AppendEntries(1, leaderId, 5, 1, entries, 5, 5, (short)0));
 742                 assertEquals(7, followerActor.getReplicatedLog().size());
 743
 744                 //fake snapshot on index 7
 745                 assertEquals(RaftState.Follower, followerActor.getCurrentBehavior().state());
 746
 747                 entries =
 748                         Arrays.asList(
 749                                 (ReplicatedLogEntry) new MockRaftActorContext.MockReplicatedLogEntry(1, 7,
 750                                         new MockRaftActorContext.MockPayload("foo-7"))
 751                         );
 752                 followerActor.onReceiveCommand(new AppendEntries(1, leaderId, 6, 1, entries, 6, 6, (short) 0));
 753                 assertEquals(8, followerActor.getReplicatedLog().size());
 754
 755                 assertEquals(RaftState.Follower, followerActor.getCurrentBehavior().state());
 756
 757
 758                 ByteString snapshotBytes = fromObject(Arrays.asList(
 759                         new MockRaftActorContext.MockPayload("foo-0"),
 760                         new MockRaftActorContext.MockPayload("foo-1"),
 761                         new MockRaftActorContext.MockPayload("foo-2"),
 762                         new MockRaftActorContext.MockPayload("foo-3"),
 763                         new MockRaftActorContext.MockPayload("foo-4")));
 764                 followerActor.onReceiveCommand(new CaptureSnapshotReply(snapshotBytes.toByteArray()));
 765                 assertTrue(followerActor.getRaftActorContext().getSnapshotManager().isCapturing());
 766
 767                 // The commit is needed to complete the snapshot creation process
 768                 followerActor.getRaftActorContext().getSnapshotManager().commit(-1, follower);
 769
 770                 // capture snapshot reply should remove the snapshotted entries only till replicatedToAllIndex
 771                 assertEquals(3, followerActor.getReplicatedLog().size()); //indexes 5,6,7 left in the log
 772                 assertEquals(7, followerActor.getReplicatedLog().lastIndex());
 773
 774                 entries =
 775                         Arrays.asList(
 776                                 (ReplicatedLogEntry) new MockRaftActorContext.MockReplicatedLogEntry(1, 8,
 777                                         new MockRaftActorContext.MockPayload("foo-7"))
 778                         );
 779                 // send an additional entry 8 with leaderCommit = 7
 780                 followerActor.onReceiveCommand(new AppendEntries(1, leaderId, 7, 1, entries, 7, 7, (short) 0));
 781
 782                 // 7 and 8, as lastapplied is 7
 783                 assertEquals(2, followerActor.getReplicatedLog().size());
 784
 785             }
 786         };
 787     }
 788
 789     @Test
 790     public void testFakeSnapshotsForLeaderWithInInitiateSnapshots() throws Exception {
 791         new JavaTestKit(getSystem()) {
 792             {
 793                 String persistenceId = factory.generateActorId("leader-");
 794                 String follower1Id = factory.generateActorId("follower-");
 795                 String follower2Id = factory.generateActorId("follower-");
 796
 797                 ActorRef followerActor1 =
 798                         factory.createActor(Props.create(MessageCollectorActor.class), follower1Id);
 799                 ActorRef followerActor2 =
 800                         factory.createActor(Props.create(MessageCollectorActor.class), follower2Id);
 801
 802                 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 803                 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 804                 config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
 805
 806                 DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
 807
 808                 Map<String, String> peerAddresses = new HashMap<>();
 809                 peerAddresses.put(follower1Id, followerActor1.path().toString());
 810                 peerAddresses.put(follower2Id, followerActor2.path().toString());
 811
 812                 TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
 813                         MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
 814
 815                 MockRaftActor leaderActor = mockActorRef.underlyingActor();
 816                 leaderActor.getRaftActorContext().setCommitIndex(9);
 817                 leaderActor.getRaftActorContext().setLastApplied(9);
 818                 leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
 819
 820                 leaderActor.waitForInitializeBehaviorComplete();
 821
 822                 Leader leader = new Leader(leaderActor.getRaftActorContext());
 823                 leaderActor.setCurrentBehavior(leader);
 824                 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
 825
 826                 // create 5 entries in the log
 827                 MockRaftActorContext.MockReplicatedLogBuilder logBuilder = new MockRaftActorContext.MockReplicatedLogBuilder();
 828                 leaderActor.getRaftActorContext().setReplicatedLog(logBuilder.createEntries(5, 10, 1).build());
 829
 830                 //set the snapshot index to 4 , 0 to 4 are snapshotted
 831                 leaderActor.getRaftActorContext().getReplicatedLog().setSnapshotIndex(4);
 832                 //setting replicatedToAllIndex = 9, for the log to clear
 833                 leader.setReplicatedToAllIndex(9);
 834                 assertEquals(5, leaderActor.getReplicatedLog().size());
 835                 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
 836
 837                 leaderActor.onReceiveCommand(new AppendEntriesReply(follower1Id, 1, true, 9, 1, (short) 0));
 838                 assertEquals(5, leaderActor.getReplicatedLog().size());
 839                 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
 840
 841                 // set the 2nd follower nextIndex to 1 which has been snapshotted
 842                 leaderActor.onReceiveCommand(new AppendEntriesReply(follower2Id, 1, true, 0, 1, (short)0));
 843                 assertEquals(5, leaderActor.getReplicatedLog().size());
 844                 assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
 845
 846                 // simulate a real snapshot
 847                 leaderActor.onReceiveCommand(new SendHeartBeat());
 848                 assertEquals(5, leaderActor.getReplicatedLog().size());
 849                 assertEquals(String.format("expected to be Leader but was %s. Current Leader = %s ",
 850                         leaderActor.getCurrentBehavior().state(), leaderActor.getLeaderId())
 851                         , RaftState.Leader, leaderActor.getCurrentBehavior().state());
 852
 853
 854                 //reply from a slow follower does not initiate a fake snapshot
 855                 leaderActor.onReceiveCommand(new AppendEntriesReply(follower2Id, 1, true, 9, 1, (short)0));
 856                 assertEquals("Fake snapshot should not happen when Initiate is in progress", 5, leaderActor.getReplicatedLog().size());
 857
 858                 ByteString snapshotBytes = fromObject(Arrays.asList(
 859                         new MockRaftActorContext.MockPayload("foo-0"),
 860                         new MockRaftActorContext.MockPayload("foo-1"),
 861                         new MockRaftActorContext.MockPayload("foo-2"),
 862                         new MockRaftActorContext.MockPayload("foo-3"),
 863                         new MockRaftActorContext.MockPayload("foo-4")));
 864                 leaderActor.onReceiveCommand(new CaptureSnapshotReply(snapshotBytes.toByteArray()));
 865                 assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
 866
 867                 assertEquals("Real snapshot didn't clear the log till replicatedToAllIndex", 0, leaderActor.getReplicatedLog().size());
 868
 869                 //reply from a slow follower after should not raise errors
 870                 leaderActor.onReceiveCommand(new AppendEntriesReply(follower2Id, 1, true, 5, 1, (short) 0));
 871                 assertEquals(0, leaderActor.getReplicatedLog().size());
 872             }
 873         };
 874     }
 875
 876     @Test
 877     public void testRealSnapshotWhenReplicatedToAllIndexMinusOne() throws Exception {
 878         new JavaTestKit(getSystem()) {{
 879             String persistenceId = factory.generateActorId("leader-");
 880             DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 881             config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 882             config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
 883             config.setSnapshotBatchCount(5);
 884
 885             DataPersistenceProvider dataPersistenceProvider = new NonPersistentDataProvider();
 886
 887             Map<String, String> peerAddresses = ImmutableMap.<String, String>builder().put("member1", "address").build();
 888
 889             TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
 890                     MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
 891
 892             MockRaftActor leaderActor = mockActorRef.underlyingActor();
 893             leaderActor.getRaftActorContext().setCommitIndex(3);
 894             leaderActor.getRaftActorContext().setLastApplied(3);
 895             leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
 896
 897             leaderActor.waitForInitializeBehaviorComplete();
 898             for(int i=0;i< 4;i++) {
 899                 leaderActor.getReplicatedLog()
 900                         .append(new MockRaftActorContext.MockReplicatedLogEntry(1, i,
 901                                 new MockRaftActorContext.MockPayload("A")));
 902             }
 903
 904             Leader leader = new Leader(leaderActor.getRaftActorContext());
 905             leaderActor.setCurrentBehavior(leader);
 906             assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
 907
 908             // Simulate an install snaphost to a follower.
 909             leaderActor.getRaftActorContext().getSnapshotManager().captureToInstall(
 910                     leaderActor.getReplicatedLog().last(), -1, "member1");
 911
 912             // Now send a CaptureSnapshotReply
 913             mockActorRef.tell(new CaptureSnapshotReply(fromObject("foo").toByteArray()), mockActorRef);
 914
 915             // Trimming log in this scenario is a no-op
 916             assertEquals(-1, leaderActor.getReplicatedLog().getSnapshotIndex());
 917             assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
 918             assertEquals(-1, leader.getReplicatedToAllIndex());
 919
 920         }};
 921     }
 922
 923     @Test
 924     public void testRealSnapshotWhenReplicatedToAllIndexNotInReplicatedLog() throws Exception {
 925         new JavaTestKit(getSystem()) {{
 926             String persistenceId = factory.generateActorId("leader-");
 927             DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 928             config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 929             config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
 930             config.setSnapshotBatchCount(5);
 931
 932             DataPersistenceProvider dataPersistenceProvider = new NonPersistentDataProvider();
 933
 934             Map<String, String> peerAddresses = ImmutableMap.<String, String>builder().put("member1", "address").build();
 935
 936             TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
 937                     MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
 938
 939             MockRaftActor leaderActor = mockActorRef.underlyingActor();
 940             leaderActor.getRaftActorContext().setCommitIndex(3);
 941             leaderActor.getRaftActorContext().setLastApplied(3);
 942             leaderActor.getRaftActorContext().getTermInformation().update(1, persistenceId);
 943             leaderActor.getReplicatedLog().setSnapshotIndex(3);
 944
 945             leaderActor.waitForInitializeBehaviorComplete();
 946             Leader leader = new Leader(leaderActor.getRaftActorContext());
 947             leaderActor.setCurrentBehavior(leader);
 948             leader.setReplicatedToAllIndex(3);
 949             assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
 950
 951             // Persist another entry (this will cause a CaptureSnapshot to be triggered
 952             leaderActor.persistData(mockActorRef, "x", new MockRaftActorContext.MockPayload("duh"));
 953
 954             // Now send a CaptureSnapshotReply
 955             mockActorRef.tell(new CaptureSnapshotReply(fromObject("foo").toByteArray()), mockActorRef);
 956
 957             // Trimming log in this scenario is a no-op
 958             assertEquals(3, leaderActor.getReplicatedLog().getSnapshotIndex());
 959             assertTrue(leaderActor.getRaftActorContext().getSnapshotManager().isCapturing());
 960             assertEquals(3, leader.getReplicatedToAllIndex());
 961
 962         }};
 963     }
 964
 965     @Test
 966     public void testRaftActorOnRecoverySnapshot() throws Exception {
 967         TEST_LOG.info("testRaftActorOnRecoverySnapshot");
 968
 969         new JavaTestKit(getSystem()) {{
 970                 String persistenceId = factory.generateActorId("follower-");
 971
 972                 DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
 973
 974                 // Set the heartbeat interval high to essentially disable election otherwise the test
 975                 // may fail if the actor is switched to Leader
 976                 config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
 977
 978                 ImmutableMap<String, String> peerAddresses = ImmutableMap.<String, String>builder().put("member1", "address").build();
 979
 980                 // Create mock ReplicatedLogEntry
 981                 ReplicatedLogEntry replLogEntry = new MockRaftActorContext.MockReplicatedLogEntry(1,1,
 982                         new MockRaftActorContext.MockPayload("F", 1));
 983
 984                 InMemoryJournal.addEntry(persistenceId, 1, replLogEntry);
 985
 986                 TestActorRef<MockRaftActor> ref = factory.createTestActor(
 987                         MockRaftActor.props(persistenceId, peerAddresses, config));
 988
 989                 MockRaftActor mockRaftActor = ref.underlyingActor();
 990
 991                 mockRaftActor.waitForRecoveryComplete();
 992
 993                 mockRaftActor.waitForInitializeBehaviorComplete();
 994
 995                 verify(mockRaftActor.snapshotCohortDelegate, timeout(5000)).createSnapshot(any(ActorRef.class));
 996             }};
 997     }
 998
 999     @Test
1000     public void testSwitchBehavior(){
1001         String persistenceId = factory.generateActorId("leader-");
1002         DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1003         config.setCustomRaftPolicyImplementationClass("org.opendaylight.controller.cluster.raft.policy.DisableElectionsRaftPolicy");
1004         config.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
1005         config.setIsolatedLeaderCheckInterval(new FiniteDuration(1, TimeUnit.DAYS));
1006         config.setSnapshotBatchCount(5);
1007
1008         DataPersistenceProvider dataPersistenceProvider = new NonPersistentDataProvider();
1009
1010         Map<String, String> peerAddresses = ImmutableMap.<String, String>builder().build();
1011
1012         TestActorRef<MockRaftActor> mockActorRef = factory.createTestActor(
1013                 MockRaftActor.props(persistenceId, peerAddresses, config, dataPersistenceProvider), persistenceId);
1014
1015         MockRaftActor leaderActor = mockActorRef.underlyingActor();
1016
1017         leaderActor.waitForRecoveryComplete();
1018
1019         leaderActor.handleCommand(new SwitchBehavior(RaftState.Follower, 100));
1020
1021         assertEquals(100, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
1022         assertEquals(RaftState.Follower, leaderActor.getCurrentBehavior().state());
1023
1024         leaderActor.handleCommand(new SwitchBehavior(RaftState.Leader, 110));
1025
1026         assertEquals(110, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
1027         assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
1028
1029         leaderActor.handleCommand(new SwitchBehavior(RaftState.Candidate, 125));
1030
1031         assertEquals(110, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
1032         assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
1033
1034         leaderActor.handleCommand(new SwitchBehavior(RaftState.IsolatedLeader, 125));
1035
1036         assertEquals(110, leaderActor.getRaftActorContext().getTermInformation().getCurrentTerm());
1037         assertEquals(RaftState.Leader, leaderActor.getCurrentBehavior().state());
1038     }
1039
1040     public static ByteString fromObject(Object snapshot) throws Exception {
1041         ByteArrayOutputStream b = null;
1042         ObjectOutputStream o = null;
1043         try {
1044             b = new ByteArrayOutputStream();
1045             o = new ObjectOutputStream(b);
1046             o.writeObject(snapshot);
1047             byte[] snapshotBytes = b.toByteArray();
1048             return ByteString.copyFrom(snapshotBytes);
1049         } finally {
1050             if (o != null) {
1051                 o.flush();
1052                 o.close();
1053             }
1054             if (b != null) {
1055                 b.close();
1056             }
1057         }
1058     }
1059
1060     @Test
1061     public void testUpdateConfigParam() throws Exception {
1062         DefaultConfigParamsImpl emptyConfig = new DefaultConfigParamsImpl();
1063         String persistenceId = factory.generateActorId("follower-");
1064         ImmutableMap<String, String> peerAddresses =
1065             ImmutableMap.<String, String>builder().put("member1", "address").build();
1066         DataPersistenceProvider dataPersistenceProvider = mock(DataPersistenceProvider.class);
1067
1068         TestActorRef<MockRaftActor> actorRef = factory.createTestActor(
1069                 MockRaftActor.props(persistenceId, peerAddresses, emptyConfig, dataPersistenceProvider), persistenceId);
1070         MockRaftActor mockRaftActor = actorRef.underlyingActor();
1071         mockRaftActor.waitForInitializeBehaviorComplete();
1072
1073         RaftActorBehavior behavior = mockRaftActor.getCurrentBehavior();
1074         mockRaftActor.updateConfigParams(emptyConfig);
1075         assertSame("Same Behavior", behavior, mockRaftActor.getCurrentBehavior());
1076         assertEquals("Behavior State", RaftState.Follower,
1077             mockRaftActor.getCurrentBehavior().state());
1078
1079         DefaultConfigParamsImpl disableConfig = new DefaultConfigParamsImpl();
1080         disableConfig.setCustomRaftPolicyImplementationClass(
1081             "org.opendaylight.controller.cluster.raft.policy.DisableElectionsRaftPolicy");
1082         mockRaftActor.updateConfigParams(disableConfig);
1083         assertNotSame("Different Behavior", behavior, mockRaftActor.getCurrentBehavior());
1084         assertEquals("Behavior State", RaftState.Follower,
1085             mockRaftActor.getCurrentBehavior().state());
1086
1087         behavior = mockRaftActor.getCurrentBehavior();
1088         mockRaftActor.updateConfigParams(disableConfig);
1089         assertSame("Same Behavior", behavior, mockRaftActor.getCurrentBehavior());
1090         assertEquals("Behavior State", RaftState.Follower,
1091             mockRaftActor.getCurrentBehavior().state());
1092
1093         DefaultConfigParamsImpl defaultConfig = new DefaultConfigParamsImpl();
1094         defaultConfig.setCustomRaftPolicyImplementationClass(
1095             "org.opendaylight.controller.cluster.raft.policy.DefaultRaftPolicy");
1096         mockRaftActor.updateConfigParams(defaultConfig);
1097         assertNotSame("Different Behavior", behavior, mockRaftActor.getCurrentBehavior());
1098         assertEquals("Behavior State", RaftState.Follower,
1099             mockRaftActor.getCurrentBehavior().state());
1100
1101         behavior = mockRaftActor.getCurrentBehavior();
1102         mockRaftActor.updateConfigParams(defaultConfig);
1103         assertSame("Same Behavior", behavior, mockRaftActor.getCurrentBehavior());
1104         assertEquals("Behavior State", RaftState.Follower,
1105             mockRaftActor.getCurrentBehavior().state());
1106     }
1107
1108     @Test
1109     public void testGetSnapshot() throws Exception {
1110         TEST_LOG.info("testGetSnapshot starting");
1111
1112         JavaTestKit kit = new JavaTestKit(getSystem());
1113
1114         String persistenceId = factory.generateActorId("test-actor-");
1115         DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1116         config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1117
1118         long term = 3;
1119         long seqN = 1;
1120         InMemoryJournal.addEntry(persistenceId, seqN++, new UpdateElectionTerm(term, "member-1"));
1121         InMemoryJournal.addEntry(persistenceId, seqN++, new MockRaftActorContext.MockReplicatedLogEntry(term, 0,
1122                 new MockRaftActorContext.MockPayload("A")));
1123         InMemoryJournal.addEntry(persistenceId, seqN++, new MockRaftActorContext.MockReplicatedLogEntry(term, 1,
1124                 new MockRaftActorContext.MockPayload("B")));
1125         InMemoryJournal.addEntry(persistenceId, seqN++, new ApplyJournalEntries(1));
1126         InMemoryJournal.addEntry(persistenceId, seqN++, new MockRaftActorContext.MockReplicatedLogEntry(term, 2,
1127                 new MockRaftActorContext.MockPayload("C")));
1128
1129         TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.props(persistenceId,
1130                 ImmutableMap.<String, String>builder().put("member1", "address").build(), config).
1131                     withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1132         MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1133
1134         mockRaftActor.waitForRecoveryComplete();
1135
1136         // Wait for snapshot after recovery
1137         verify(mockRaftActor.snapshotCohortDelegate, timeout(5000)).createSnapshot(any(ActorRef.class));
1138
1139         mockRaftActor.snapshotCohortDelegate = mock(RaftActorSnapshotCohort.class);
1140
1141         raftActorRef.tell(GetSnapshot.INSTANCE, kit.getRef());
1142
1143         ArgumentCaptor<ActorRef> replyActor = ArgumentCaptor.forClass(ActorRef.class);
1144         verify(mockRaftActor.snapshotCohortDelegate, timeout(5000)).createSnapshot(replyActor.capture());
1145
1146         byte[] stateSnapshot = new byte[]{1,2,3};
1147         replyActor.getValue().tell(new CaptureSnapshotReply(stateSnapshot), ActorRef.noSender());
1148
1149         GetSnapshotReply reply = kit.expectMsgClass(GetSnapshotReply.class);
1150
1151         assertEquals("getId", persistenceId, reply.getId());
1152         Snapshot replySnapshot = SerializationUtils.deserialize(reply.getSnapshot());
1153         assertEquals("getElectionTerm", term, replySnapshot.getElectionTerm());
1154         assertEquals("getElectionVotedFor", "member-1", replySnapshot.getElectionVotedFor());
1155         assertEquals("getLastAppliedIndex", 1L, replySnapshot.getLastAppliedIndex());
1156         assertEquals("getLastAppliedTerm", term, replySnapshot.getLastAppliedTerm());
1157         assertEquals("getLastIndex", 2L, replySnapshot.getLastIndex());
1158         assertEquals("getLastTerm", term, replySnapshot.getLastTerm());
1159         assertArrayEquals("getState", stateSnapshot, replySnapshot.getState());
1160         assertEquals("getUnAppliedEntries size", 1, replySnapshot.getUnAppliedEntries().size());
1161         assertEquals("UnApplied entry index ", 2L, replySnapshot.getUnAppliedEntries().get(0).getIndex());
1162
1163         // Test with timeout
1164
1165         mockRaftActor.getSnapshotMessageSupport().setSnapshotReplyActorTimeout(Duration.create(200, TimeUnit.MILLISECONDS));
1166         reset(mockRaftActor.snapshotCohortDelegate);
1167
1168         raftActorRef.tell(GetSnapshot.INSTANCE, kit.getRef());
1169         Failure failure = kit.expectMsgClass(akka.actor.Status.Failure.class);
1170         assertEquals("Failure cause type", TimeoutException.class, failure.cause().getClass());
1171
1172         mockRaftActor.getSnapshotMessageSupport().setSnapshotReplyActorTimeout(Duration.create(30, TimeUnit.SECONDS));
1173
1174         // Test with persistence disabled.
1175
1176         mockRaftActor.setPersistence(false);
1177         reset(mockRaftActor.snapshotCohortDelegate);
1178
1179         raftActorRef.tell(GetSnapshot.INSTANCE, kit.getRef());
1180         reply = kit.expectMsgClass(GetSnapshotReply.class);
1181         verify(mockRaftActor.snapshotCohortDelegate, never()).createSnapshot(any(ActorRef.class));
1182
1183         assertEquals("getId", persistenceId, reply.getId());
1184         replySnapshot = SerializationUtils.deserialize(reply.getSnapshot());
1185         assertEquals("getElectionTerm", term, replySnapshot.getElectionTerm());
1186         assertEquals("getElectionVotedFor", "member-1", replySnapshot.getElectionVotedFor());
1187         assertEquals("getLastAppliedIndex", -1L, replySnapshot.getLastAppliedIndex());
1188         assertEquals("getLastAppliedTerm", -1L, replySnapshot.getLastAppliedTerm());
1189         assertEquals("getLastIndex", -1L, replySnapshot.getLastIndex());
1190         assertEquals("getLastTerm", -1L, replySnapshot.getLastTerm());
1191         assertEquals("getState length", 0, replySnapshot.getState().length);
1192         assertEquals("getUnAppliedEntries size", 0, replySnapshot.getUnAppliedEntries().size());
1193
1194         TEST_LOG.info("testGetSnapshot ending");
1195     }
1196
1197     @Test
1198     public void testRestoreFromSnapshot() throws Exception {
1199         TEST_LOG.info("testRestoreFromSnapshot starting");
1200
1201         String persistenceId = factory.generateActorId("test-actor-");
1202         DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1203         config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1204
1205         List<ReplicatedLogEntry> snapshotUnappliedEntries = new ArrayList<>();
1206         snapshotUnappliedEntries.add(new MockRaftActorContext.MockReplicatedLogEntry(1, 4,
1207                 new MockRaftActorContext.MockPayload("E")));
1208
1209         int snapshotLastApplied = 3;
1210         int snapshotLastIndex = 4;
1211
1212         List<MockPayload> state = Arrays.asList(
1213                 new MockRaftActorContext.MockPayload("A"),
1214                 new MockRaftActorContext.MockPayload("B"),
1215                 new MockRaftActorContext.MockPayload("C"),
1216                 new MockRaftActorContext.MockPayload("D"));
1217         ByteString stateBytes = fromObject(state);
1218
1219         Snapshot snapshot = Snapshot.create(stateBytes.toByteArray(), snapshotUnappliedEntries,
1220                 snapshotLastIndex, 1, snapshotLastApplied, 1, 1, "member-1");
1221
1222         InMemorySnapshotStore.addSnapshotSavedLatch(persistenceId);
1223
1224         TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId).
1225                 config(config).restoreFromSnapshot(SerializationUtils.serialize(snapshot)).props().
1226                     withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1227         MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1228
1229         mockRaftActor.waitForRecoveryComplete();
1230
1231         Snapshot savedSnapshot = InMemorySnapshotStore.waitForSavedSnapshot(persistenceId, Snapshot.class);
1232         assertEquals("getElectionTerm", snapshot.getElectionTerm(), savedSnapshot.getElectionTerm());
1233         assertEquals("getElectionVotedFor", snapshot.getElectionVotedFor(), savedSnapshot.getElectionVotedFor());
1234         assertEquals("getLastAppliedIndex", snapshot.getLastAppliedIndex(), savedSnapshot.getLastAppliedIndex());
1235         assertEquals("getLastAppliedTerm", snapshot.getLastAppliedTerm(), savedSnapshot.getLastAppliedTerm());
1236         assertEquals("getLastIndex", snapshot.getLastIndex(), savedSnapshot.getLastIndex());
1237         assertEquals("getLastTerm", snapshot.getLastTerm(), savedSnapshot.getLastTerm());
1238         assertArrayEquals("getState", snapshot.getState(), savedSnapshot.getState());
1239         assertEquals("getUnAppliedEntries", snapshot.getUnAppliedEntries(), savedSnapshot.getUnAppliedEntries());
1240
1241         verify(mockRaftActor.snapshotCohortDelegate, timeout(5000)).applySnapshot(any(byte[].class));
1242
1243         RaftActorContext context = mockRaftActor.getRaftActorContext();
1244         assertEquals("Journal log size", 1, context.getReplicatedLog().size());
1245         assertEquals("Last index", snapshotLastIndex, context.getReplicatedLog().lastIndex());
1246         assertEquals("Last applied", snapshotLastApplied, context.getLastApplied());
1247         assertEquals("Commit index", snapshotLastApplied, context.getCommitIndex());
1248         assertEquals("Recovered state", state, mockRaftActor.getState());
1249         assertEquals("Current term", 1L, context.getTermInformation().getCurrentTerm());
1250         assertEquals("Voted for", "member-1", context.getTermInformation().getVotedFor());
1251
1252         // Test with data persistence disabled
1253
1254         snapshot = Snapshot.create(new byte[0], Collections.<ReplicatedLogEntry>emptyList(),
1255                 -1, -1, -1, -1, 5, "member-1");
1256
1257         persistenceId = factory.generateActorId("test-actor-");
1258
1259         raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId).
1260                 config(config).restoreFromSnapshot(SerializationUtils.serialize(snapshot)).
1261                 persistent(Optional.of(Boolean.FALSE)).props().
1262                     withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1263         mockRaftActor = raftActorRef.underlyingActor();
1264
1265         mockRaftActor.waitForRecoveryComplete();
1266         assertEquals("snapshot committed", true,
1267                 Uninterruptibles.awaitUninterruptibly(mockRaftActor.snapshotCommitted, 5, TimeUnit.SECONDS));
1268
1269         context = mockRaftActor.getRaftActorContext();
1270         assertEquals("Current term", 5L, context.getTermInformation().getCurrentTerm());
1271         assertEquals("Voted for", "member-1", context.getTermInformation().getVotedFor());
1272
1273         TEST_LOG.info("testRestoreFromSnapshot ending");
1274     }
1275
1276     @Test
1277     public void testRestoreFromSnapshotWithRecoveredData() throws Exception {
1278         TEST_LOG.info("testRestoreFromSnapshotWithRecoveredData starting");
1279
1280         String persistenceId = factory.generateActorId("test-actor-");
1281         DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1282         config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1283
1284         List<MockPayload> state = Arrays.asList(new MockRaftActorContext.MockPayload("A"));
1285         Snapshot snapshot = Snapshot.create(fromObject(state).toByteArray(), Arrays.<ReplicatedLogEntry>asList(),
1286                 5, 2, 5, 2, 2, "member-1");
1287
1288         InMemoryJournal.addEntry(persistenceId, 1, new MockRaftActorContext.MockReplicatedLogEntry(1, 0,
1289                 new MockRaftActorContext.MockPayload("B")));
1290
1291         TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId).
1292                 config(config).restoreFromSnapshot(SerializationUtils.serialize(snapshot)).props().
1293                     withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1294         MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1295
1296         mockRaftActor.waitForRecoveryComplete();
1297
1298         verify(mockRaftActor.snapshotCohortDelegate, timeout(500).never()).applySnapshot(any(byte[].class));
1299
1300         RaftActorContext context = mockRaftActor.getRaftActorContext();
1301         assertEquals("Journal log size", 1, context.getReplicatedLog().size());
1302         assertEquals("Last index", 0, context.getReplicatedLog().lastIndex());
1303         assertEquals("Last applied", -1, context.getLastApplied());
1304         assertEquals("Commit index", -1, context.getCommitIndex());
1305         assertEquals("Current term", 0, context.getTermInformation().getCurrentTerm());
1306         assertEquals("Voted for", null, context.getTermInformation().getVotedFor());
1307
1308         TEST_LOG.info("testRestoreFromSnapshotWithRecoveredData ending");
1309     }
1310
1311     @Test
1312     public void testNonVotingOnRecovery() throws Exception {
1313         TEST_LOG.info("testNonVotingOnRecovery starting");
1314
1315         DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1316         config.setElectionTimeoutFactor(1);
1317         config.setHeartBeatInterval(FiniteDuration.create(1, TimeUnit.MILLISECONDS));
1318
1319         String persistenceId = factory.generateActorId("test-actor-");
1320         InMemoryJournal.addEntry(persistenceId, 1,  new MockRaftActorContext.MockReplicatedLogEntry(1, 0,
1321                 new ServerConfigurationPayload(Arrays.asList(new ServerInfo(persistenceId, false)))));
1322
1323         TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId).
1324                 config(config).props().withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1325         MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1326
1327         mockRaftActor.waitForInitializeBehaviorComplete();
1328
1329         // Sleep a bit and verify it didn't get an election timeout and schedule an election.
1330
1331         Uninterruptibles.sleepUninterruptibly(400, TimeUnit.MILLISECONDS);
1332         assertEquals("getRaftState", RaftState.Follower, mockRaftActor.getRaftState());
1333
1334         TEST_LOG.info("testNonVotingOnRecovery ending");
1335     }
1336
1337     @Test
1338     public void testLeaderTransitioning() throws Exception {
1339         TEST_LOG.info("testLeaderTransitioning starting");
1340
1341         TestActorRef<MessageCollectorActor> notifierActor = factory.createTestActor(
1342                 Props.create(MessageCollectorActor.class));
1343
1344         DefaultConfigParamsImpl config = new DefaultConfigParamsImpl();
1345         config.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
1346
1347         String persistenceId = factory.generateActorId("test-actor-");
1348
1349         TestActorRef<MockRaftActor> raftActorRef = factory.createTestActor(MockRaftActor.builder().id(persistenceId).
1350                 config(config).roleChangeNotifier(notifierActor).props().withDispatcher(Dispatchers.DefaultDispatcherId()), persistenceId);
1351         MockRaftActor mockRaftActor = raftActorRef.underlyingActor();
1352
1353         mockRaftActor.waitForInitializeBehaviorComplete();
1354
1355         raftActorRef.tell(new AppendEntries(1L, "leader", 0L, 1L, Collections.<ReplicatedLogEntry>emptyList(),
1356                 0L, -1L, (short)1), ActorRef.noSender());
1357         LeaderStateChanged leaderStateChange = MessageCollectorActor.expectFirstMatching(
1358                 notifierActor, LeaderStateChanged.class);
1359         assertEquals("getLeaderId", "leader", leaderStateChange.getLeaderId());
1360
1361         MessageCollectorActor.clearMessages(notifierActor);
1362
1363         raftActorRef.tell(new LeaderTransitioning(), ActorRef.noSender());
1364
1365         leaderStateChange = MessageCollectorActor.expectFirstMatching(notifierActor, LeaderStateChanged.class);
1366         assertEquals("getMemberId", persistenceId, leaderStateChange.getMemberId());
1367         assertEquals("getLeaderId", null, leaderStateChange.getLeaderId());
1368
1369         TEST_LOG.info("testLeaderTransitioning ending");
1370     }
1371 }