/*
* Copyright (c) 2015 Brocade Communications Systems, Inc. and others. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 which accompanies this distribution,
* and is available at http://www.eclipse.org/legal/epl-v10.html
*/
package org.opendaylight.controller.cluster.raft;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor.assertNoneMatching;
import static org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor.clearMessages;
import static org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor.expectFirstMatching;
import static org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor.expectMatching;
import akka.actor.ActorRef;
import akka.actor.Props;
import akka.actor.UntypedActor;
import akka.dispatch.Dispatchers;
import akka.testkit.JavaTestKit;
import akka.testkit.TestActorRef;
import com.google.common.base.Optional;
import com.google.common.base.Stopwatch;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Maps;
import com.google.common.collect.Sets;
import com.google.common.io.ByteSource;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import org.apache.commons.lang3.SerializationUtils;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.opendaylight.controller.cluster.NonPersistentDataProvider;
import org.opendaylight.controller.cluster.raft.base.messages.ApplySnapshot;
import org.opendaylight.controller.cluster.raft.base.messages.ApplyState;
import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshotReply;
import org.opendaylight.controller.cluster.raft.base.messages.InitiateCaptureSnapshot;
import org.opendaylight.controller.cluster.raft.base.messages.TimeoutNow;
import org.opendaylight.controller.cluster.raft.behaviors.AbstractLeader;
import org.opendaylight.controller.cluster.raft.behaviors.Follower;
import org.opendaylight.controller.cluster.raft.behaviors.Leader;
import org.opendaylight.controller.cluster.raft.behaviors.RaftActorBehavior;
import org.opendaylight.controller.cluster.raft.messages.AddServer;
import org.opendaylight.controller.cluster.raft.messages.AddServerReply;
import org.opendaylight.controller.cluster.raft.messages.AppendEntries;
import org.opendaylight.controller.cluster.raft.messages.ChangeServersVotingStatus;
import org.opendaylight.controller.cluster.raft.messages.InstallSnapshot;
import org.opendaylight.controller.cluster.raft.messages.RemoveServer;
import org.opendaylight.controller.cluster.raft.messages.RemoveServerReply;
import org.opendaylight.controller.cluster.raft.messages.RequestVote;
import org.opendaylight.controller.cluster.raft.messages.ServerChangeReply;
import org.opendaylight.controller.cluster.raft.messages.ServerChangeStatus;
import org.opendaylight.controller.cluster.raft.messages.ServerRemoved;
import org.opendaylight.controller.cluster.raft.messages.UnInitializedFollowerSnapshotReply;
import org.opendaylight.controller.cluster.raft.persisted.ApplyJournalEntries;
import org.opendaylight.controller.cluster.raft.persisted.ByteState;
import org.opendaylight.controller.cluster.raft.persisted.ServerConfigurationPayload;
import org.opendaylight.controller.cluster.raft.persisted.ServerInfo;
import org.opendaylight.controller.cluster.raft.persisted.SimpleReplicatedLogEntry;
import org.opendaylight.controller.cluster.raft.persisted.UpdateElectionTerm;
import org.opendaylight.controller.cluster.raft.policy.DisableElectionsRaftPolicy;
import org.opendaylight.controller.cluster.raft.utils.ForwardMessageToBehaviorActor;
import org.opendaylight.controller.cluster.raft.utils.InMemoryJournal;
import org.opendaylight.controller.cluster.raft.utils.InMemorySnapshotStore;
import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import scala.concurrent.duration.FiniteDuration;
/**
* Unit tests for RaftActorServerConfigurationSupport.
*
* @author Thomas Pantelis
*/
public class RaftActorServerConfigurationSupportTest extends AbstractActorTest {
static final String LEADER_ID = "leader";
static final String FOLLOWER_ID = "follower";
static final String FOLLOWER_ID2 = "follower2";
static final String NEW_SERVER_ID = "new-server";
static final String NEW_SERVER_ID2 = "new-server2";
private static final Logger LOG = LoggerFactory.getLogger(RaftActorServerConfigurationSupportTest.class);
private static final Class<?> COMMIT_MESSAGE_CLASS = RaftActorSnapshotMessageSupport.COMMIT_SNAPSHOT.getClass();
private static final boolean NO_PERSISTENCE = false;
private static final boolean PERSISTENT = true;
private final TestActorFactory actorFactory = new TestActorFactory(getSystem());
private final TestActorRef<ForwardMessageToBehaviorActor> followerActor = actorFactory.createTestActor(
Props.create(ForwardMessageToBehaviorActor.class).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(FOLLOWER_ID));
private TestActorRef<MockNewFollowerRaftActor> newFollowerRaftActor;
private TestActorRef<MessageCollectorActor> newFollowerCollectorActor;
private RaftActorContext newFollowerActorContext;
private final JavaTestKit testKit = new JavaTestKit(getSystem());
@Before
public void setup() {
InMemoryJournal.clear();
InMemorySnapshotStore.clear();
}
@SuppressWarnings("checkstyle:IllegalCatch")
private void setupNewFollower() {
DefaultConfigParamsImpl configParams = newFollowerConfigParams();
newFollowerCollectorActor = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(NEW_SERVER_ID + "Collector"));
newFollowerRaftActor = actorFactory.createTestActor(MockNewFollowerRaftActor.props(
configParams, newFollowerCollectorActor).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(NEW_SERVER_ID));
try {
newFollowerActorContext = newFollowerRaftActor.underlyingActor().getRaftActorContext();
} catch (Exception e) {
newFollowerActorContext = newFollowerRaftActor.underlyingActor().getRaftActorContext();
}
}
private static DefaultConfigParamsImpl newFollowerConfigParams() {
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(100, TimeUnit.MILLISECONDS));
configParams.setElectionTimeoutFactor(100000);
configParams.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
return configParams;
}
@After
public void tearDown() throws Exception {
actorFactory.close();
}
@Test
public void testAddServerWithExistingFollower() throws Exception {
LOG.info("testAddServerWithExistingFollower starting");
setupNewFollower();
RaftActorContextImpl followerActorContext = newFollowerContext(FOLLOWER_ID, followerActor);
followerActorContext.setReplicatedLog(new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(
0, 3, 1).build());
followerActorContext.setCommitIndex(2);
followerActorContext.setLastApplied(2);
Follower follower = new Follower(followerActorContext);
followerActor.underlyingActor().setBehavior(follower);
followerActorContext.setCurrentBehavior(follower);
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.of(FOLLOWER_ID, followerActor.path().toString()),
followerActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
// Expect initial heartbeat from the leader.
expectFirstMatching(followerActor, AppendEntries.class);
clearMessages(followerActor);
MockLeaderRaftActor leaderRaftActor = leaderActor.underlyingActor();
final TestActorRef<MessageCollectorActor> leaderCollectorActor = newLeaderCollectorActor(leaderRaftActor);
leaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true), testKit.getRef());
// Leader should install snapshot - capture and verify ApplySnapshot contents
ApplySnapshot applySnapshot = expectFirstMatching(newFollowerCollectorActor, ApplySnapshot.class);
List<Object> snapshotState = MockRaftActor.fromState(applySnapshot.getSnapshot().getState());
assertEquals("Snapshot state", snapshotState, leaderRaftActor.getState());
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, addServerReply.getStatus());
assertEquals("getLeaderHint", LEADER_ID, addServerReply.getLeaderHint().get());
// Verify ServerConfigurationPayload entry in leader's log
expectFirstMatching(leaderCollectorActor, ApplyState.class);
RaftActorContext leaderActorContext = leaderRaftActor.getRaftActorContext();
assertEquals("Leader journal last index", 3, leaderActorContext.getReplicatedLog().lastIndex());
assertEquals("Leader commit index", 3, leaderActorContext.getCommitIndex());
assertEquals("Leader last applied index", 3, leaderActorContext.getLastApplied());
verifyServerConfigurationPayloadEntry(leaderActorContext.getReplicatedLog(), votingServer(LEADER_ID),
votingServer(FOLLOWER_ID), votingServer(NEW_SERVER_ID));
// Verify ServerConfigurationPayload entry in both followers
expectFirstMatching(followerActor, ApplyState.class);
assertEquals("Follower journal last index", 3, followerActorContext.getReplicatedLog().lastIndex());
verifyServerConfigurationPayloadEntry(followerActorContext.getReplicatedLog(), votingServer(LEADER_ID),
votingServer(FOLLOWER_ID), votingServer(NEW_SERVER_ID));
expectFirstMatching(newFollowerCollectorActor, ApplyState.class);
assertEquals("New follower journal last index", 3, newFollowerActorContext.getReplicatedLog().lastIndex());
verifyServerConfigurationPayloadEntry(newFollowerActorContext.getReplicatedLog(), votingServer(LEADER_ID),
votingServer(FOLLOWER_ID), votingServer(NEW_SERVER_ID));
// Verify new server config was applied in both followers
assertEquals("Follower peers", Sets.newHashSet(LEADER_ID, NEW_SERVER_ID), followerActorContext.getPeerIds());
assertEquals("New follower peers", Sets.newHashSet(LEADER_ID, FOLLOWER_ID),
newFollowerActorContext.getPeerIds());
assertEquals("Follower commit index", 3, followerActorContext.getCommitIndex());
assertEquals("Follower last applied index", 3, followerActorContext.getLastApplied());
assertEquals("New follower commit index", 3, newFollowerActorContext.getCommitIndex());
assertEquals("New follower last applied index", 3, newFollowerActorContext.getLastApplied());
assertEquals("Leader persisted ReplicatedLogImplEntry entries", 0,
InMemoryJournal.get(LEADER_ID, SimpleReplicatedLogEntry.class).size());
assertEquals("Leader persisted ServerConfigurationPayload entries", 1,
InMemoryJournal.get(LEADER_ID, ServerConfigurationPayload.class).size());
assertEquals("New follower persisted ReplicatedLogImplEntry entries", 0,
InMemoryJournal.get(NEW_SERVER_ID, SimpleReplicatedLogEntry.class).size());
assertEquals("New follower persisted ServerConfigurationPayload entries", 1,
InMemoryJournal.get(NEW_SERVER_ID, ServerConfigurationPayload.class).size());
LOG.info("testAddServerWithExistingFollower ending");
}
@Test
public void testAddServerWithNoExistingFollower() throws Exception {
LOG.info("testAddServerWithNoExistingFollower starting");
setupNewFollower();
RaftActorContext initialActorContext = new MockRaftActorContext();
initialActorContext.setCommitIndex(1);
initialActorContext.setLastApplied(1);
initialActorContext.setReplicatedLog(new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(
0, 2, 1).build());
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.<String, String>of(),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
MockLeaderRaftActor leaderRaftActor = leaderActor.underlyingActor();
final RaftActorContext leaderActorContext = leaderRaftActor.getRaftActorContext();
final TestActorRef<MessageCollectorActor> leaderCollectorActor = newLeaderCollectorActor(leaderRaftActor);
leaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true), testKit.getRef());
// Leader should install snapshot - capture and verify ApplySnapshot contents
ApplySnapshot applySnapshot = expectFirstMatching(newFollowerCollectorActor, ApplySnapshot.class);
List<Object> snapshotState = MockRaftActor.fromState(applySnapshot.getSnapshot().getState());
assertEquals("Snapshot state", snapshotState, leaderRaftActor.getState());
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, addServerReply.getStatus());
assertEquals("getLeaderHint", LEADER_ID, addServerReply.getLeaderHint().get());
// Verify ServerConfigurationPayload entry in leader's log
expectFirstMatching(leaderCollectorActor, ApplyState.class);
assertEquals("Leader journal last index", 2, leaderActorContext.getReplicatedLog().lastIndex());
assertEquals("Leader commit index", 2, leaderActorContext.getCommitIndex());
assertEquals("Leader last applied index", 2, leaderActorContext.getLastApplied());
verifyServerConfigurationPayloadEntry(leaderActorContext.getReplicatedLog(), votingServer(LEADER_ID),
votingServer(NEW_SERVER_ID));
// Verify ServerConfigurationPayload entry in the new follower
expectFirstMatching(newFollowerCollectorActor, ApplyState.class);
assertEquals("New follower journal last index", 2, newFollowerActorContext.getReplicatedLog().lastIndex());
verifyServerConfigurationPayloadEntry(newFollowerActorContext.getReplicatedLog(), votingServer(LEADER_ID),
votingServer(NEW_SERVER_ID));
// Verify new server config was applied in the new follower
assertEquals("New follower peers", Sets.newHashSet(LEADER_ID), newFollowerActorContext.getPeerIds());
LOG.info("testAddServerWithNoExistingFollower ending");
}
@Test
public void testAddServersAsNonVoting() throws Exception {
LOG.info("testAddServersAsNonVoting starting");
setupNewFollower();
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.<String, String>of(),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
MockLeaderRaftActor leaderRaftActor = leaderActor.underlyingActor();
final RaftActorContext leaderActorContext = leaderRaftActor.getRaftActorContext();
final TestActorRef<MessageCollectorActor> leaderCollectorActor = newLeaderCollectorActor(leaderRaftActor);
leaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), false), testKit.getRef());
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, addServerReply.getStatus());
assertEquals("getLeaderHint", LEADER_ID, addServerReply.getLeaderHint().get());
// Verify ServerConfigurationPayload entry in leader's log
expectFirstMatching(leaderCollectorActor, ApplyState.class);
assertEquals("Leader journal last index", 0, leaderActorContext.getReplicatedLog().lastIndex());
assertEquals("Leader commit index", 0, leaderActorContext.getCommitIndex());
assertEquals("Leader last applied index", 0, leaderActorContext.getLastApplied());
verifyServerConfigurationPayloadEntry(leaderActorContext.getReplicatedLog(), votingServer(LEADER_ID),
nonVotingServer(NEW_SERVER_ID));
// Verify ServerConfigurationPayload entry in the new follower
expectFirstMatching(newFollowerCollectorActor, ApplyState.class);
assertEquals("New follower journal last index", 0, newFollowerActorContext.getReplicatedLog().lastIndex());
verifyServerConfigurationPayloadEntry(newFollowerActorContext.getReplicatedLog(), votingServer(LEADER_ID),
nonVotingServer(NEW_SERVER_ID));
// Verify new server config was applied in the new follower
assertEquals("New follower peers", Sets.newHashSet(LEADER_ID), newFollowerActorContext.getPeerIds());
assertNoneMatching(newFollowerCollectorActor, InstallSnapshot.class, 500);
// Add another non-voting server.
clearMessages(leaderCollectorActor);
RaftActorContext follower2ActorContext = newFollowerContext(NEW_SERVER_ID2, followerActor);
Follower newFollower2 = new Follower(follower2ActorContext);
followerActor.underlyingActor().setBehavior(newFollower2);
leaderActor.tell(new AddServer(NEW_SERVER_ID2, followerActor.path().toString(), false), testKit.getRef());
addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, addServerReply.getStatus());
assertEquals("getLeaderHint", java.util.Optional.of(LEADER_ID), addServerReply.getLeaderHint());
expectFirstMatching(leaderCollectorActor, ApplyState.class);
assertEquals("Leader journal last index", 1, leaderActorContext.getReplicatedLog().lastIndex());
assertEquals("Leader commit index", 1, leaderActorContext.getCommitIndex());
assertEquals("Leader last applied index", 1, leaderActorContext.getLastApplied());
verifyServerConfigurationPayloadEntry(leaderActorContext.getReplicatedLog(),
votingServer(LEADER_ID), nonVotingServer(NEW_SERVER_ID), nonVotingServer(NEW_SERVER_ID2));
LOG.info("testAddServersAsNonVoting ending");
}
@Test
public void testAddServerWithOperationInProgress() throws Exception {
LOG.info("testAddServerWithOperationInProgress starting");
setupNewFollower();
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.<String, String>of(),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
MockLeaderRaftActor leaderRaftActor = leaderActor.underlyingActor();
final RaftActorContext leaderActorContext = leaderRaftActor.getRaftActorContext();
final TestActorRef<MessageCollectorActor> leaderCollectorActor = newLeaderCollectorActor(leaderRaftActor);
RaftActorContext follower2ActorContext = newFollowerContext(NEW_SERVER_ID2, followerActor);
Follower newFollower2 = new Follower(follower2ActorContext);
followerActor.underlyingActor().setBehavior(newFollower2);
MockNewFollowerRaftActor newFollowerRaftActorInstance = newFollowerRaftActor.underlyingActor();
newFollowerRaftActorInstance.setDropMessageOfType(InstallSnapshot.class);
leaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true), testKit.getRef());
// Wait for leader's install snapshot and capture it
InstallSnapshot installSnapshot = expectFirstMatching(newFollowerCollectorActor, InstallSnapshot.class);
// Send a second AddServer - should get queued
JavaTestKit testKit2 = new JavaTestKit(getSystem());
leaderActor.tell(new AddServer(NEW_SERVER_ID2, followerActor.path().toString(), false), testKit2.getRef());
// Continue the first AddServer
newFollowerRaftActorInstance.setDropMessageOfType(null);
newFollowerRaftActor.tell(installSnapshot, leaderActor);
// Verify both complete successfully
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, addServerReply.getStatus());
addServerReply = testKit2.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, addServerReply.getStatus());
// Verify ServerConfigurationPayload entries in leader's log
expectMatching(leaderCollectorActor, ApplyState.class, 2);
assertEquals("Leader journal last index", 1, leaderActorContext.getReplicatedLog().lastIndex());
assertEquals("Leader commit index", 1, leaderActorContext.getCommitIndex());
assertEquals("Leader last applied index", 1, leaderActorContext.getLastApplied());
verifyServerConfigurationPayloadEntry(leaderActorContext.getReplicatedLog(),
votingServer(LEADER_ID), votingServer(NEW_SERVER_ID), nonVotingServer(NEW_SERVER_ID2));
// Verify ServerConfigurationPayload entry in the new follower
expectMatching(newFollowerCollectorActor, ApplyState.class, 2);
assertEquals("New follower peers", Sets.newHashSet(LEADER_ID, NEW_SERVER_ID2),
newFollowerActorContext.getPeerIds());
LOG.info("testAddServerWithOperationInProgress ending");
}
@Test
public void testAddServerWithPriorSnapshotInProgress() throws Exception {
LOG.info("testAddServerWithPriorSnapshotInProgress starting");
setupNewFollower();
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.<String, String>of(),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
MockLeaderRaftActor leaderRaftActor = leaderActor.underlyingActor();
final RaftActorContext leaderActorContext = leaderRaftActor.getRaftActorContext();
TestActorRef<MessageCollectorActor> leaderCollectorActor = newLeaderCollectorActor(leaderRaftActor);
// Drop commit message for now to delay snapshot completion
leaderRaftActor.setDropMessageOfType(String.class);
leaderActor.tell(new InitiateCaptureSnapshot(), leaderActor);
Object commitMsg = expectFirstMatching(leaderCollectorActor, COMMIT_MESSAGE_CLASS);
leaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true), testKit.getRef());
leaderRaftActor.setDropMessageOfType(null);
leaderActor.tell(commitMsg, leaderActor);
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, addServerReply.getStatus());
assertEquals("getLeaderHint", LEADER_ID, addServerReply.getLeaderHint().get());
expectFirstMatching(newFollowerCollectorActor, ApplySnapshot.class);
// Verify ServerConfigurationPayload entry in leader's log
expectFirstMatching(leaderCollectorActor, ApplyState.class);
assertEquals("Leader journal last index", 0, leaderActorContext.getReplicatedLog().lastIndex());
assertEquals("Leader commit index", 0, leaderActorContext.getCommitIndex());
assertEquals("Leader last applied index", 0, leaderActorContext.getLastApplied());
verifyServerConfigurationPayloadEntry(leaderActorContext.getReplicatedLog(), votingServer(LEADER_ID),
votingServer(NEW_SERVER_ID));
LOG.info("testAddServerWithPriorSnapshotInProgress ending");
}
@Test
public void testAddServerWithPriorSnapshotCompleteTimeout() throws Exception {
LOG.info("testAddServerWithPriorSnapshotCompleteTimeout starting");
setupNewFollower();
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.<String, String>of(),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
MockLeaderRaftActor leaderRaftActor = leaderActor.underlyingActor();
RaftActorContext leaderActorContext = leaderRaftActor.getRaftActorContext();
((DefaultConfigParamsImpl)leaderActorContext.getConfigParams()).setElectionTimeoutFactor(1);
// Drop commit message so the snapshot doesn't complete.
leaderRaftActor.setDropMessageOfType(COMMIT_MESSAGE_CLASS);
leaderActor.tell(new InitiateCaptureSnapshot(), leaderActor);
leaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true), testKit.getRef());
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.TIMEOUT, addServerReply.getStatus());
assertEquals("Leader peers size", 0, leaderActorContext.getPeerIds().size());
LOG.info("testAddServerWithPriorSnapshotCompleteTimeout ending");
}
@Test
public void testAddServerWithLeaderChangeBeforePriorSnapshotComplete() throws Exception {
LOG.info("testAddServerWithLeaderChangeBeforePriorSnapshotComplete starting");
setupNewFollower();
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.<String, String>of(),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
MockLeaderRaftActor leaderRaftActor = leaderActor.underlyingActor();
RaftActorContext leaderActorContext = leaderRaftActor.getRaftActorContext();
((DefaultConfigParamsImpl)leaderActorContext.getConfigParams()).setElectionTimeoutFactor(100);
final TestActorRef<MessageCollectorActor> leaderCollectorActor = newLeaderCollectorActor(leaderRaftActor);
// Drop the commit message so the snapshot doesn't complete yet.
leaderRaftActor.setDropMessageOfType(COMMIT_MESSAGE_CLASS);
leaderActor.tell(new InitiateCaptureSnapshot(), leaderActor);
leaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true), testKit.getRef());
Object commitMsg = expectFirstMatching(leaderCollectorActor, COMMIT_MESSAGE_CLASS);
// Change the leader behavior to follower
leaderActor.tell(new Follower(leaderActorContext), leaderActor);
// Drop CaptureSnapshotReply in case install snapshot is incorrectly initiated after the prior
// snapshot completes. This will prevent the invalid snapshot from completing and fail the
// isCapturing assertion below.
leaderRaftActor.setDropMessageOfType(CaptureSnapshotReply.class);
// Complete the prior snapshot - this should be a no-op b/c it's no longer the leader
leaderActor.tell(commitMsg, leaderActor);
leaderActor.tell(new RaftActorServerConfigurationSupport.ServerOperationTimeout(NEW_SERVER_ID), leaderActor);
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.NO_LEADER, addServerReply.getStatus());
assertEquals("Leader peers size", 0, leaderActorContext.getPeerIds().size());
assertEquals("isCapturing", false, leaderActorContext.getSnapshotManager().isCapturing());
LOG.info("testAddServerWithLeaderChangeBeforePriorSnapshotComplete ending");
}
@Test
public void testAddServerWithLeaderChangeDuringInstallSnapshot() throws Exception {
LOG.info("testAddServerWithLeaderChangeDuringInstallSnapshot starting");
setupNewFollower();
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.<String, String>of(),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
MockLeaderRaftActor leaderRaftActor = leaderActor.underlyingActor();
RaftActorContext leaderActorContext = leaderRaftActor.getRaftActorContext();
((DefaultConfigParamsImpl)leaderActorContext.getConfigParams()).setElectionTimeoutFactor(8);
TestActorRef<MessageCollectorActor> leaderCollectorActor = newLeaderCollectorActor(leaderRaftActor);
// Drop the UnInitializedFollowerSnapshotReply to delay it.
leaderRaftActor.setDropMessageOfType(UnInitializedFollowerSnapshotReply.class);
leaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true), testKit.getRef());
final UnInitializedFollowerSnapshotReply snapshotReply = expectFirstMatching(leaderCollectorActor,
UnInitializedFollowerSnapshotReply.class);
// Prevent election timeout when the leader switches to follower
((DefaultConfigParamsImpl)leaderActorContext.getConfigParams()).setElectionTimeoutFactor(100);
// Change the leader behavior to follower
leaderActor.tell(new Follower(leaderActorContext), leaderActor);
// Send the captured UnInitializedFollowerSnapshotReply - should be a no-op
leaderRaftActor.setDropMessageOfType(null);
leaderActor.tell(snapshotReply, leaderActor);
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.NO_LEADER, addServerReply.getStatus());
assertEquals("Leader peers size", 0, leaderActorContext.getPeerIds().size());
LOG.info("testAddServerWithLeaderChangeDuringInstallSnapshot ending");
}
@Test
public void testAddServerWithInstallSnapshotTimeout() throws Exception {
LOG.info("testAddServerWithInstallSnapshotTimeout starting");
setupNewFollower();
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.<String, String>of(),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
MockLeaderRaftActor leaderRaftActor = leaderActor.underlyingActor();
RaftActorContext leaderActorContext = leaderRaftActor.getRaftActorContext();
((DefaultConfigParamsImpl)leaderActorContext.getConfigParams()).setElectionTimeoutFactor(1);
// Drop the InstallSnapshot message so it times out
newFollowerRaftActor.underlyingActor().setDropMessageOfType(InstallSnapshot.class);
leaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true), testKit.getRef());
leaderActor.tell(new UnInitializedFollowerSnapshotReply("bogus"), leaderActor);
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.TIMEOUT, addServerReply.getStatus());
assertEquals("Leader peers size", 0, leaderActorContext.getPeerIds().size());
assertEquals("Leader followers size", 0,
((AbstractLeader)leaderRaftActor.getCurrentBehavior()).getFollowerIds().size());
LOG.info("testAddServerWithInstallSnapshotTimeout ending");
}
@Test
public void testAddServerWithNoLeader() {
LOG.info("testAddServerWithNoLeader starting");
setupNewFollower();
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
TestActorRef<MockRaftActor> noLeaderActor = actorFactory.createTestActor(
MockRaftActor.builder().id(LEADER_ID).peerAddresses(ImmutableMap.of(FOLLOWER_ID,
followerActor.path().toString())).config(configParams).persistent(Optional.of(false))
.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
noLeaderActor.underlyingActor().waitForInitializeBehaviorComplete();
noLeaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true),
testKit.getRef());
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.NO_LEADER, addServerReply.getStatus());
LOG.info("testAddServerWithNoLeader ending");
}
@Test
public void testAddServerWithNoConsensusReached() {
LOG.info("testAddServerWithNoConsensusReached starting");
setupNewFollower();
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.<String, String>of(),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
MockLeaderRaftActor leaderRaftActor = leaderActor.underlyingActor();
final RaftActorContext leaderActorContext = leaderRaftActor.getRaftActorContext();
final TestActorRef<MessageCollectorActor> leaderCollectorActor = newLeaderCollectorActor(leaderRaftActor);
// Drop UnInitializedFollowerSnapshotReply initially
leaderRaftActor.setDropMessageOfType(UnInitializedFollowerSnapshotReply.class);
MockNewFollowerRaftActor newFollowerRaftActorInstance = newFollowerRaftActor.underlyingActor();
newFollowerCollectorActor = newCollectorActor(newFollowerRaftActorInstance, NEW_SERVER_ID);
// Drop AppendEntries to the new follower so consensus isn't reached
newFollowerRaftActorInstance.setDropMessageOfType(AppendEntries.class);
leaderActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true), testKit.getRef());
// Capture the UnInitializedFollowerSnapshotReply
Object snapshotReply = expectFirstMatching(leaderCollectorActor, UnInitializedFollowerSnapshotReply.class);
// Send the UnInitializedFollowerSnapshotReply to resume the first request
leaderRaftActor.setDropMessageOfType(null);
leaderActor.tell(snapshotReply, leaderActor);
expectFirstMatching(newFollowerCollectorActor, AppendEntries.class);
// Send a second AddServer
leaderActor.tell(new AddServer(NEW_SERVER_ID2, "", false), testKit.getRef());
// The first AddServer should succeed with OK even though consensus wasn't reached
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, addServerReply.getStatus());
assertEquals("getLeaderHint", LEADER_ID, addServerReply.getLeaderHint().get());
// Verify ServerConfigurationPayload entry in leader's log
verifyServerConfigurationPayloadEntry(leaderActorContext.getReplicatedLog(), votingServer(LEADER_ID),
votingServer(NEW_SERVER_ID));
// The second AddServer should fail since consensus wasn't reached for the first
addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.PRIOR_REQUEST_CONSENSUS_TIMEOUT, addServerReply.getStatus());
// Re-send the second AddServer - should also fail
leaderActor.tell(new AddServer(NEW_SERVER_ID2, "", false), testKit.getRef());
addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.PRIOR_REQUEST_CONSENSUS_TIMEOUT, addServerReply.getStatus());
LOG.info("testAddServerWithNoConsensusReached ending");
}
@Test
public void testAddServerWithExistingServer() {
LOG.info("testAddServerWithExistingServer starting");
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.of(FOLLOWER_ID, followerActor.path().toString()),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
leaderActor.tell(new AddServer(FOLLOWER_ID, followerActor.path().toString(), true), testKit.getRef());
AddServerReply addServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), AddServerReply.class);
assertEquals("getStatus", ServerChangeStatus.ALREADY_EXISTS, addServerReply.getStatus());
LOG.info("testAddServerWithExistingServer ending");
}
@Test
public void testAddServerForwardedToLeader() {
LOG.info("testAddServerForwardedToLeader starting");
setupNewFollower();
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
TestActorRef<MessageCollectorActor> leaderActor = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
TestActorRef<MockRaftActor> followerRaftActor = actorFactory.createTestActor(
MockRaftActor.builder().id(FOLLOWER_ID).peerAddresses(ImmutableMap.of(LEADER_ID,
leaderActor.path().toString())).config(configParams).persistent(Optional.of(false))
.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(FOLLOWER_ID));
followerRaftActor.underlyingActor().waitForInitializeBehaviorComplete();
followerRaftActor.tell(new AppendEntries(1, LEADER_ID, 0, 1, Collections.<ReplicatedLogEntry>emptyList(),
-1, -1, (short)0), leaderActor);
followerRaftActor.tell(new AddServer(NEW_SERVER_ID, newFollowerRaftActor.path().toString(), true),
testKit.getRef());
expectFirstMatching(leaderActor, AddServer.class);
LOG.info("testAddServerForwardedToLeader ending");
}
@Test
public void testOnApplyState() {
LOG.info("testOnApplyState starting");
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
TestActorRef<MockRaftActor> noLeaderActor = actorFactory.createTestActor(
MockRaftActor.builder().id(LEADER_ID).peerAddresses(ImmutableMap.of(FOLLOWER_ID,
followerActor.path().toString())).config(configParams).persistent(Optional.of(false))
.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
RaftActorServerConfigurationSupport support = new RaftActorServerConfigurationSupport(
noLeaderActor.underlyingActor());
ReplicatedLogEntry serverConfigEntry = new SimpleReplicatedLogEntry(1, 1,
new ServerConfigurationPayload(Collections.<ServerInfo>emptyList()));
boolean handled = support.handleMessage(new ApplyState(null, null, serverConfigEntry), ActorRef.noSender());
assertEquals("Message handled", true, handled);
ReplicatedLogEntry nonServerConfigEntry = new SimpleReplicatedLogEntry(1, 1,
new MockRaftActorContext.MockPayload("1"));
handled = support.handleMessage(new ApplyState(null, null, nonServerConfigEntry), ActorRef.noSender());
assertEquals("Message handled", false, handled);
LOG.info("testOnApplyState ending");
}
@Test
public void testRemoveServerWithNoLeader() {
LOG.info("testRemoveServerWithNoLeader starting");
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
TestActorRef<MockRaftActor> leaderActor = actorFactory.createTestActor(
MockRaftActor.builder().id(LEADER_ID).peerAddresses(ImmutableMap.of(FOLLOWER_ID,
followerActor.path().toString())).config(configParams).persistent(Optional.of(false))
.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
leaderActor.underlyingActor().waitForInitializeBehaviorComplete();
leaderActor.tell(new RemoveServer(FOLLOWER_ID), testKit.getRef());
RemoveServerReply removeServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"),
RemoveServerReply.class);
assertEquals("getStatus", ServerChangeStatus.NO_LEADER, removeServerReply.getStatus());
LOG.info("testRemoveServerWithNoLeader ending");
}
@Test
public void testRemoveServerNonExistentServer() {
LOG.info("testRemoveServerNonExistentServer starting");
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.of(FOLLOWER_ID, followerActor.path().toString()),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
leaderActor.tell(new RemoveServer(NEW_SERVER_ID), testKit.getRef());
RemoveServerReply removeServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"),
RemoveServerReply.class);
assertEquals("getStatus", ServerChangeStatus.DOES_NOT_EXIST, removeServerReply.getStatus());
LOG.info("testRemoveServerNonExistentServer ending");
}
@Test
public void testRemoveServerForwardToLeader() {
LOG.info("testRemoveServerForwardToLeader starting");
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
TestActorRef<MessageCollectorActor> leaderActor = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
TestActorRef<MockRaftActor> followerRaftActor = actorFactory.createTestActor(
MockRaftActor.builder().id(FOLLOWER_ID).peerAddresses(ImmutableMap.of(LEADER_ID,
leaderActor.path().toString())).config(configParams).persistent(Optional.of(false))
.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(FOLLOWER_ID));
followerRaftActor.underlyingActor().waitForInitializeBehaviorComplete();
followerRaftActor.tell(new AppendEntries(1, LEADER_ID, 0, 1, Collections.<ReplicatedLogEntry>emptyList(),
-1, -1, (short)0), leaderActor);
followerRaftActor.tell(new RemoveServer(FOLLOWER_ID), testKit.getRef());
expectFirstMatching(leaderActor, RemoveServer.class);
LOG.info("testRemoveServerForwardToLeader ending");
}
@Test
public void testRemoveServer() throws Exception {
LOG.info("testRemoveServer starting");
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
configParams.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
final String follower1ActorId = actorFactory.generateActorId(FOLLOWER_ID);
final String follower1ActorPath = actorFactory.createTestActorPath(follower1ActorId);
final String follower2ActorId = actorFactory.generateActorId(FOLLOWER_ID2);
final String follower2ActorPath = actorFactory.createTestActorPath(follower2ActorId);
RaftActorContext initialActorContext = new MockRaftActorContext();
final String downNodeId = "downNode";
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(MockLeaderRaftActor.props(
ImmutableMap.of(FOLLOWER_ID, follower1ActorPath, FOLLOWER_ID2, follower2ActorPath, downNodeId, ""),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
final TestActorRef<MessageCollectorActor> leaderCollector =
newLeaderCollectorActor(leaderActor.underlyingActor());
TestActorRef<MessageCollectorActor> follower1Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
final TestActorRef<CollectingMockRaftActor> follower1Actor = actorFactory.createTestActor(
CollectingMockRaftActor.props(FOLLOWER_ID, ImmutableMap.of(LEADER_ID, leaderActor.path().toString(),
FOLLOWER_ID2, follower2ActorPath, downNodeId, ""), configParams, NO_PERSISTENCE,
follower1Collector).withDispatcher(Dispatchers.DefaultDispatcherId()), follower1ActorId);
TestActorRef<MessageCollectorActor> follower2Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
final TestActorRef<CollectingMockRaftActor> follower2Actor = actorFactory.createTestActor(
CollectingMockRaftActor.props(FOLLOWER_ID2, ImmutableMap.of(LEADER_ID, leaderActor.path().toString(),
FOLLOWER_ID, follower1ActorPath, downNodeId, ""), configParams, NO_PERSISTENCE,
follower2Collector).withDispatcher(Dispatchers.DefaultDispatcherId()), follower2ActorId);
leaderActor.underlyingActor().waitForInitializeBehaviorComplete();
follower1Actor.underlyingActor().waitForInitializeBehaviorComplete();
follower2Actor.underlyingActor().waitForInitializeBehaviorComplete();
leaderActor.tell(new RemoveServer(FOLLOWER_ID), testKit.getRef());
RemoveServerReply removeServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"),
RemoveServerReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, removeServerReply.getStatus());
ApplyState applyState = MessageCollectorActor.expectFirstMatching(leaderCollector, ApplyState.class);
assertEquals(0L, applyState.getReplicatedLogEntry().getIndex());
verifyServerConfigurationPayloadEntry(leaderActor.underlyingActor().getRaftActorContext().getReplicatedLog(),
votingServer(LEADER_ID), votingServer(FOLLOWER_ID2), votingServer(downNodeId));
applyState = MessageCollectorActor.expectFirstMatching(follower2Collector, ApplyState.class);
assertEquals(0L, applyState.getReplicatedLogEntry().getIndex());
verifyServerConfigurationPayloadEntry(leaderActor.underlyingActor().getRaftActorContext().getReplicatedLog(),
votingServer(LEADER_ID), votingServer(FOLLOWER_ID2), votingServer(downNodeId));
RaftActorBehavior currentBehavior = leaderActor.underlyingActor().getCurrentBehavior();
assertTrue("Expected Leader", currentBehavior instanceof Leader);
assertEquals("Follower ids size", 2, ((Leader)currentBehavior).getFollowerIds().size());
MessageCollectorActor.expectFirstMatching(follower1Collector, ServerRemoved.class);
LOG.info("testRemoveServer ending");
}
@Test
public void testRemoveServerLeader() {
LOG.info("testRemoveServerLeader starting");
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
configParams.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
final String followerActorId = actorFactory.generateActorId(FOLLOWER_ID);
final String followerActorPath = actorFactory.createTestActorPath(followerActorId);
RaftActorContext initialActorContext = new MockRaftActorContext();
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.of(FOLLOWER_ID, followerActorPath),
initialActorContext).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
final TestActorRef<MessageCollectorActor> leaderCollector =
newLeaderCollectorActor(leaderActor.underlyingActor());
final TestActorRef<MessageCollectorActor> followerCollector =
actorFactory.createTestActor(MessageCollectorActor.props()
.withDispatcher(Dispatchers.DefaultDispatcherId()), actorFactory.generateActorId("collector"));
actorFactory.createTestActor(
CollectingMockRaftActor.props(FOLLOWER_ID, ImmutableMap.of(LEADER_ID, leaderActor.path().toString()),
configParams, NO_PERSISTENCE, followerCollector)
.withDispatcher(Dispatchers.DefaultDispatcherId()),
followerActorId);
leaderActor.tell(new RemoveServer(LEADER_ID), testKit.getRef());
RemoveServerReply removeServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"),
RemoveServerReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, removeServerReply.getStatus());
final ApplyState applyState = MessageCollectorActor.expectFirstMatching(followerCollector, ApplyState.class);
assertEquals(0L, applyState.getReplicatedLogEntry().getIndex());
verifyServerConfigurationPayloadEntry(leaderActor.underlyingActor().getRaftActorContext().getReplicatedLog(),
votingServer(FOLLOWER_ID));
MessageCollectorActor.expectFirstMatching(leaderCollector, ServerRemoved.class);
LOG.info("testRemoveServerLeader ending");
}
@Test
public void testRemoveServerLeaderWithNoFollowers() {
LOG.info("testRemoveServerLeaderWithNoFollowers starting");
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(Collections.<String, String>emptyMap(),
new MockRaftActorContext()).withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(LEADER_ID));
leaderActor.tell(new RemoveServer(LEADER_ID), testKit.getRef());
RemoveServerReply removeServerReply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"),
RemoveServerReply.class);
assertEquals("getStatus", ServerChangeStatus.NOT_SUPPORTED, removeServerReply.getStatus());
LOG.info("testRemoveServerLeaderWithNoFollowers ending");
}
@Test
public void testChangeServersVotingStatus() {
LOG.info("testChangeServersVotingStatus starting");
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(1, TimeUnit.DAYS));
configParams.setCustomRaftPolicyImplementationClass(DisableElectionsRaftPolicy.class.getName());
final String follower1ActorId = actorFactory.generateActorId(FOLLOWER_ID);
final String follower1ActorPath = actorFactory.createTestActorPath(follower1ActorId);
final String follower2ActorId = actorFactory.generateActorId(FOLLOWER_ID2);
final String follower2ActorPath = actorFactory.createTestActorPath(follower2ActorId);
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.of(FOLLOWER_ID, follower1ActorPath,
FOLLOWER_ID2, follower2ActorPath), new MockRaftActorContext())
.withDispatcher(Dispatchers.DefaultDispatcherId()), actorFactory.generateActorId(LEADER_ID));
TestActorRef<MessageCollectorActor> leaderCollector = newLeaderCollectorActor(leaderActor.underlyingActor());
TestActorRef<MessageCollectorActor> follower1Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
final TestActorRef<CollectingMockRaftActor> follower1RaftActor = actorFactory.createTestActor(
CollectingMockRaftActor.props(FOLLOWER_ID, ImmutableMap.of(LEADER_ID, leaderActor.path().toString(),
FOLLOWER_ID2, follower2ActorPath), configParams, NO_PERSISTENCE, follower1Collector)
.withDispatcher(Dispatchers.DefaultDispatcherId()), follower1ActorId);
TestActorRef<MessageCollectorActor> follower2Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
final TestActorRef<CollectingMockRaftActor> follower2RaftActor = actorFactory.createTestActor(
CollectingMockRaftActor.props(FOLLOWER_ID2, ImmutableMap.of(LEADER_ID, leaderActor.path().toString(),
FOLLOWER_ID, follower1ActorPath), configParams, NO_PERSISTENCE, follower2Collector)
.withDispatcher(Dispatchers.DefaultDispatcherId()), follower2ActorId);
// Send first ChangeServersVotingStatus message
leaderActor.tell(new ChangeServersVotingStatus(ImmutableMap.of(FOLLOWER_ID, false, FOLLOWER_ID2, false)),
testKit.getRef());
ServerChangeReply reply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), ServerChangeReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, reply.getStatus());
final ApplyState applyState = MessageCollectorActor.expectFirstMatching(leaderCollector, ApplyState.class);
assertEquals(0L, applyState.getReplicatedLogEntry().getIndex());
verifyServerConfigurationPayloadEntry(leaderActor.underlyingActor().getRaftActorContext().getReplicatedLog(),
votingServer(LEADER_ID), nonVotingServer(FOLLOWER_ID), nonVotingServer(FOLLOWER_ID2));
MessageCollectorActor.expectFirstMatching(follower1Collector, ApplyState.class);
verifyServerConfigurationPayloadEntry(follower1RaftActor.underlyingActor().getRaftActorContext()
.getReplicatedLog(), votingServer(LEADER_ID), nonVotingServer(FOLLOWER_ID),
nonVotingServer(FOLLOWER_ID2));
MessageCollectorActor.expectFirstMatching(follower2Collector, ApplyState.class);
verifyServerConfigurationPayloadEntry(follower2RaftActor.underlyingActor().getRaftActorContext()
.getReplicatedLog(), votingServer(LEADER_ID), nonVotingServer(FOLLOWER_ID),
nonVotingServer(FOLLOWER_ID2));
MessageCollectorActor.clearMessages(leaderCollector);
MessageCollectorActor.clearMessages(follower1Collector);
MessageCollectorActor.clearMessages(follower2Collector);
// Send second ChangeServersVotingStatus message
leaderActor.tell(new ChangeServersVotingStatus(ImmutableMap.of(FOLLOWER_ID, true)), testKit.getRef());
reply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), ServerChangeReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, reply.getStatus());
MessageCollectorActor.expectFirstMatching(leaderCollector, ApplyState.class);
verifyServerConfigurationPayloadEntry(leaderActor.underlyingActor().getRaftActorContext().getReplicatedLog(),
votingServer(LEADER_ID), votingServer(FOLLOWER_ID), nonVotingServer(FOLLOWER_ID2));
MessageCollectorActor.expectFirstMatching(follower1Collector, ApplyState.class);
verifyServerConfigurationPayloadEntry(follower1RaftActor.underlyingActor().getRaftActorContext()
.getReplicatedLog(), votingServer(LEADER_ID), votingServer(FOLLOWER_ID), nonVotingServer(FOLLOWER_ID2));
MessageCollectorActor.expectFirstMatching(follower2Collector, ApplyState.class);
verifyServerConfigurationPayloadEntry(follower2RaftActor.underlyingActor().getRaftActorContext()
.getReplicatedLog(), votingServer(LEADER_ID), votingServer(FOLLOWER_ID), nonVotingServer(FOLLOWER_ID2));
LOG.info("testChangeServersVotingStatus ending");
}
@Test
public void testChangeLeaderToNonVoting() {
LOG.info("testChangeLeaderToNonVoting starting");
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(500, TimeUnit.MILLISECONDS));
final String follower1ActorId = actorFactory.generateActorId(FOLLOWER_ID);
final String follower1ActorPath = actorFactory.createTestActorPath(follower1ActorId);
final String follower2ActorId = actorFactory.generateActorId(FOLLOWER_ID2);
final String follower2ActorPath = actorFactory.createTestActorPath(follower2ActorId);
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.of(FOLLOWER_ID, follower1ActorPath,
FOLLOWER_ID2, follower2ActorPath), new MockRaftActorContext())
.withDispatcher(Dispatchers.DefaultDispatcherId()), actorFactory.generateActorId(LEADER_ID));
TestActorRef<MessageCollectorActor> leaderCollector = newLeaderCollectorActor(leaderActor.underlyingActor());
TestActorRef<MessageCollectorActor> follower1Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
final TestActorRef<CollectingMockRaftActor> follower1RaftActor = actorFactory.createTestActor(
CollectingMockRaftActor.props(FOLLOWER_ID, ImmutableMap.of(LEADER_ID, leaderActor.path().toString(),
FOLLOWER_ID2, follower2ActorPath), configParams, NO_PERSISTENCE, follower1Collector)
.withDispatcher(Dispatchers.DefaultDispatcherId()), follower1ActorId);
TestActorRef<MessageCollectorActor> follower2Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
final TestActorRef<CollectingMockRaftActor> follower2RaftActor = actorFactory.createTestActor(
CollectingMockRaftActor.props(FOLLOWER_ID2, ImmutableMap.of(LEADER_ID, leaderActor.path().toString(),
FOLLOWER_ID, follower1ActorPath), configParams, NO_PERSISTENCE, follower2Collector)
.withDispatcher(Dispatchers.DefaultDispatcherId()), follower2ActorId);
// Send ChangeServersVotingStatus message
leaderActor.tell(new ChangeServersVotingStatus(ImmutableMap.of(LEADER_ID, false)), testKit.getRef());
ServerChangeReply reply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), ServerChangeReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, reply.getStatus());
MessageCollectorActor.expectFirstMatching(leaderCollector, ApplyState.class);
verifyServerConfigurationPayloadEntry(leaderActor.underlyingActor().getRaftActorContext().getReplicatedLog(),
nonVotingServer(LEADER_ID), votingServer(FOLLOWER_ID), votingServer(FOLLOWER_ID2));
MessageCollectorActor.expectFirstMatching(follower1Collector, ApplyState.class);
verifyServerConfigurationPayloadEntry(follower1RaftActor.underlyingActor().getRaftActorContext()
.getReplicatedLog(), nonVotingServer(LEADER_ID), votingServer(FOLLOWER_ID), votingServer(FOLLOWER_ID2));
MessageCollectorActor.expectFirstMatching(follower2Collector, ApplyState.class);
verifyServerConfigurationPayloadEntry(follower2RaftActor.underlyingActor().getRaftActorContext()
.getReplicatedLog(), nonVotingServer(LEADER_ID), votingServer(FOLLOWER_ID), votingServer(FOLLOWER_ID2));
verifyRaftState(RaftState.Leader, follower1RaftActor.underlyingActor(), follower2RaftActor.underlyingActor());
verifyRaftState(RaftState.Follower, leaderActor.underlyingActor());
MessageCollectorActor.expectMatching(leaderCollector, AppendEntries.class, 2);
LOG.info("testChangeLeaderToNonVoting ending");
}
@Test
public void testChangeLeaderToNonVotingInSingleNode() {
LOG.info("testChangeLeaderToNonVotingInSingleNode starting");
TestActorRef<MockLeaderRaftActor> leaderActor = actorFactory.createTestActor(
MockLeaderRaftActor.props(ImmutableMap.of(), new MockRaftActorContext())
.withDispatcher(Dispatchers.DefaultDispatcherId()), actorFactory.generateActorId(LEADER_ID));
leaderActor.tell(new ChangeServersVotingStatus(ImmutableMap.of(LEADER_ID, false)), testKit.getRef());
ServerChangeReply reply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), ServerChangeReply.class);
assertEquals("getStatus", ServerChangeStatus.INVALID_REQUEST, reply.getStatus());
LOG.info("testChangeLeaderToNonVotingInSingleNode ending");
}
@Test
public void testChangeToVotingWithNoLeader() {
LOG.info("testChangeToVotingWithNoLeader starting");
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(100, TimeUnit.MILLISECONDS));
configParams.setElectionTimeoutFactor(5);
final String node1ID = "node1";
final String node2ID = "node2";
// Set up a persisted ServerConfigurationPayload. Initially node1 and node2 will come up as non-voting.
// via the server config. The server config will also contain 2 voting peers that are down (ie no
// actors created).
ServerConfigurationPayload persistedServerConfig = new ServerConfigurationPayload(Arrays.asList(
new ServerInfo(node1ID, false), new ServerInfo(node2ID, false),
new ServerInfo("downNode1", true), new ServerInfo("downNode2", true)));
SimpleReplicatedLogEntry persistedServerConfigEntry = new SimpleReplicatedLogEntry(0, 1, persistedServerConfig);
InMemoryJournal.addEntry(node1ID, 1, new UpdateElectionTerm(1, "downNode1"));
InMemoryJournal.addEntry(node1ID, 2, persistedServerConfigEntry);
InMemoryJournal.addEntry(node1ID, 3, new ApplyJournalEntries(0));
InMemoryJournal.addEntry(node2ID, 1, new UpdateElectionTerm(1, "downNode2"));
InMemoryJournal.addEntry(node2ID, 2, persistedServerConfigEntry);
InMemoryJournal.addEntry(node2ID, 3, new ApplyJournalEntries(0));
TestActorRef<MessageCollectorActor> node1Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
TestActorRef<CollectingMockRaftActor> node1RaftActorRef = actorFactory.createTestActor(
CollectingMockRaftActor.props(node1ID, ImmutableMap.<String, String>of(), configParams,
PERSISTENT, node1Collector).withDispatcher(Dispatchers.DefaultDispatcherId()), node1ID);
CollectingMockRaftActor node1RaftActor = node1RaftActorRef.underlyingActor();
TestActorRef<MessageCollectorActor> node2Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
TestActorRef<CollectingMockRaftActor> node2RaftActorRef = actorFactory.createTestActor(
CollectingMockRaftActor.props(node2ID, ImmutableMap.<String, String>of(), configParams,
PERSISTENT, node2Collector).withDispatcher(Dispatchers.DefaultDispatcherId()), node2ID);
CollectingMockRaftActor node2RaftActor = node2RaftActorRef.underlyingActor();
node1RaftActor.waitForInitializeBehaviorComplete();
node2RaftActor.waitForInitializeBehaviorComplete();
// Verify the intended server config was loaded and applied.
verifyServerConfigurationPayloadEntry(node1RaftActor.getRaftActorContext().getReplicatedLog(),
nonVotingServer(node1ID), nonVotingServer(node2ID), votingServer("downNode1"),
votingServer("downNode2"));
assertEquals("isVotingMember", false, node1RaftActor.getRaftActorContext().isVotingMember());
assertEquals("getRaftState", RaftState.Follower, node1RaftActor.getRaftState());
assertEquals("getLeaderId", null, node1RaftActor.getLeaderId());
verifyServerConfigurationPayloadEntry(node2RaftActor.getRaftActorContext().getReplicatedLog(),
nonVotingServer(node1ID), nonVotingServer(node2ID), votingServer("downNode1"),
votingServer("downNode2"));
assertEquals("isVotingMember", false, node2RaftActor.getRaftActorContext().isVotingMember());
// For the test, we send a ChangeServersVotingStatus message to node1 to flip the voting states for
// each server, ie node1 and node2 to voting and the 2 down nodes to non-voting. This should cause
// node1 to try to elect itself as leader in order to apply the new server config. Since the 2
// down nodes are switched to non-voting, node1 should only need a vote from node2.
// First send the message such that node1 has no peer address for node2 - should fail.
ChangeServersVotingStatus changeServers = new ChangeServersVotingStatus(ImmutableMap.of(node1ID, true,
node2ID, true, "downNode1", false, "downNode2", false));
node1RaftActorRef.tell(changeServers, testKit.getRef());
ServerChangeReply reply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), ServerChangeReply.class);
assertEquals("getStatus", ServerChangeStatus.NO_LEADER, reply.getStatus());
assertEquals("getRaftState", RaftState.Follower, node1RaftActor.getRaftState());
// Send an AppendEntries so node1 has a leaderId
long term = node1RaftActor.getRaftActorContext().getTermInformation().getCurrentTerm();
node1RaftActorRef.tell(new AppendEntries(term, "downNode1", -1L, -1L,
Collections.<ReplicatedLogEntry>emptyList(), 0, -1, (short)1), ActorRef.noSender());
// Wait for the ElectionTimeout to clear the leaderId. The leaderId must be null so on the next
// ChangeServersVotingStatus message, it will try to elect a leader.
AbstractRaftActorIntegrationTest.verifyRaftState(node1RaftActorRef,
rs -> assertEquals("getLeader", null, rs.getLeader()));
// Update node2's peer address and send the message again
node1RaftActor.setPeerAddress(node2ID, node2RaftActorRef.path().toString());
node1RaftActorRef.tell(changeServers, testKit.getRef());
reply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), ServerChangeReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, reply.getStatus());
ApplyJournalEntries apply = MessageCollectorActor.expectFirstMatching(node1Collector,
ApplyJournalEntries.class);
assertEquals("getToIndex", 1, apply.getToIndex());
verifyServerConfigurationPayloadEntry(node1RaftActor.getRaftActorContext().getReplicatedLog(),
votingServer(node1ID), votingServer(node2ID), nonVotingServer("downNode1"),
nonVotingServer("downNode2"));
assertEquals("isVotingMember", true, node1RaftActor.getRaftActorContext().isVotingMember());
assertEquals("getRaftState", RaftState.Leader, node1RaftActor.getRaftState());
apply = MessageCollectorActor.expectFirstMatching(node2Collector, ApplyJournalEntries.class);
assertEquals("getToIndex", 1, apply.getToIndex());
verifyServerConfigurationPayloadEntry(node2RaftActor.getRaftActorContext().getReplicatedLog(),
votingServer(node1ID), votingServer(node2ID), nonVotingServer("downNode1"),
nonVotingServer("downNode2"));
assertEquals("isVotingMember", true, node2RaftActor.getRaftActorContext().isVotingMember());
assertEquals("getRaftState", RaftState.Follower, node2RaftActor.getRaftState());
LOG.info("testChangeToVotingWithNoLeader ending");
}
@Test
public void testChangeToVotingWithNoLeaderAndElectionTimeout() {
LOG.info("testChangeToVotingWithNoLeaderAndElectionTimeout starting");
final String node1ID = "node1";
final String node2ID = "node2";
final PeerAddressResolver peerAddressResolver = peerId -> peerId.equals(node1ID)
? actorFactory.createTestActorPath(node1ID) : peerId.equals(node2ID)
? actorFactory.createTestActorPath(node2ID) : null;
ServerConfigurationPayload persistedServerConfig = new ServerConfigurationPayload(Arrays.asList(
new ServerInfo(node1ID, false), new ServerInfo(node2ID, true)));
SimpleReplicatedLogEntry persistedServerConfigEntry = new SimpleReplicatedLogEntry(0, 1, persistedServerConfig);
InMemoryJournal.addEntry(node1ID, 1, new UpdateElectionTerm(1, "node1"));
InMemoryJournal.addEntry(node1ID, 2, persistedServerConfigEntry);
InMemoryJournal.addEntry(node2ID, 1, new UpdateElectionTerm(1, "node1"));
InMemoryJournal.addEntry(node2ID, 2, persistedServerConfigEntry);
DefaultConfigParamsImpl configParams1 = new DefaultConfigParamsImpl();
configParams1.setHeartBeatInterval(new FiniteDuration(100, TimeUnit.MILLISECONDS));
configParams1.setElectionTimeoutFactor(1);
configParams1.setPeerAddressResolver(peerAddressResolver);
TestActorRef<MessageCollectorActor> node1Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
TestActorRef<CollectingMockRaftActor> node1RaftActorRef = actorFactory.createTestActor(
CollectingMockRaftActor.props(node1ID, ImmutableMap.<String, String>of(), configParams1,
PERSISTENT, node1Collector).withDispatcher(Dispatchers.DefaultDispatcherId()), node1ID);
final CollectingMockRaftActor node1RaftActor = node1RaftActorRef.underlyingActor();
DefaultConfigParamsImpl configParams2 = new DefaultConfigParamsImpl();
configParams2.setElectionTimeoutFactor(1000000);
configParams2.setPeerAddressResolver(peerAddressResolver);
TestActorRef<MessageCollectorActor> node2Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
TestActorRef<CollectingMockRaftActor> node2RaftActorRef = actorFactory.createTestActor(
CollectingMockRaftActor.props(node2ID, ImmutableMap.<String, String>of(), configParams2,
PERSISTENT, node2Collector).withDispatcher(Dispatchers.DefaultDispatcherId()), node2ID);
CollectingMockRaftActor node2RaftActor = node2RaftActorRef.underlyingActor();
// Send a ChangeServersVotingStatus message to node1 to change mode1 to voting. This should cause
// node1 to try to elect itself as leader in order to apply the new server config. But we'll drop
// RequestVote messages in node2 which should cause node1 to time out and revert back to the previous
// server config and fail with NO_LEADER. Note that node1 shouldn't forward the request to node2 b/c
// node2 was previously voting.
node2RaftActor.setDropMessageOfType(RequestVote.class);
ChangeServersVotingStatus changeServers = new ChangeServersVotingStatus(ImmutableMap.of(node1ID, true));
node1RaftActorRef.tell(changeServers, testKit.getRef());
ServerChangeReply reply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), ServerChangeReply.class);
assertEquals("getStatus", ServerChangeStatus.NO_LEADER, reply.getStatus());
assertEquals("Server config", Sets.newHashSet(nonVotingServer(node1ID), votingServer(node2ID)),
Sets.newHashSet(node1RaftActor.getRaftActorContext().getPeerServerInfo(true).getServerConfig()));
assertEquals("getRaftState", RaftState.Follower, node1RaftActor.getRaftState());
LOG.info("testChangeToVotingWithNoLeaderAndElectionTimeout ending");
}
@Test
public void testChangeToVotingWithNoLeaderAndForwardedToOtherNodeAfterElectionTimeout() {
LOG.info("testChangeToVotingWithNoLeaderAndForwardedToOtherNodeAfterElectionTimeout starting");
final String node1ID = "node1";
final String node2ID = "node2";
final PeerAddressResolver peerAddressResolver = peerId -> peerId.equals(node1ID)
? actorFactory.createTestActorPath(node1ID) : peerId.equals(node2ID)
? actorFactory.createTestActorPath(node2ID) : null;
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(100, TimeUnit.MILLISECONDS));
configParams.setElectionTimeoutFactor(3);
configParams.setPeerAddressResolver(peerAddressResolver);
ServerConfigurationPayload persistedServerConfig = new ServerConfigurationPayload(Arrays.asList(
new ServerInfo(node1ID, false), new ServerInfo(node2ID, false)));
SimpleReplicatedLogEntry persistedServerConfigEntry = new SimpleReplicatedLogEntry(0, 1, persistedServerConfig);
InMemoryJournal.addEntry(node1ID, 1, new UpdateElectionTerm(1, "node1"));
InMemoryJournal.addEntry(node1ID, 2, persistedServerConfigEntry);
InMemoryJournal.addEntry(node2ID, 1, new UpdateElectionTerm(1, "node1"));
InMemoryJournal.addEntry(node2ID, 2, persistedServerConfigEntry);
InMemoryJournal.addEntry(node2ID, 3, new SimpleReplicatedLogEntry(1, 1,
new MockRaftActorContext.MockPayload("2")));
InMemoryJournal.addEntry(node2ID, 4, new ApplyJournalEntries(1));
TestActorRef<MessageCollectorActor> node1Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
TestActorRef<CollectingMockRaftActor> node1RaftActorRef = actorFactory.createTestActor(
CollectingMockRaftActor.props(node1ID, ImmutableMap.<String, String>of(), configParams,
PERSISTENT, node1Collector).withDispatcher(Dispatchers.DefaultDispatcherId()), node1ID);
final CollectingMockRaftActor node1RaftActor = node1RaftActorRef.underlyingActor();
TestActorRef<MessageCollectorActor> node2Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
TestActorRef<CollectingMockRaftActor> node2RaftActorRef = actorFactory.createTestActor(
CollectingMockRaftActor.props(node2ID, ImmutableMap.<String, String>of(), configParams,
PERSISTENT, node2Collector).withDispatcher(Dispatchers.DefaultDispatcherId()), node2ID);
final CollectingMockRaftActor node2RaftActor = node2RaftActorRef.underlyingActor();
// Send a ChangeServersVotingStatus message to node1 to change mode1 to voting. This should cause
// node1 to try to elect itself as leader in order to apply the new server config. However node1's log
// is behind node2's so node2 should not grant node1's vote. This should cause node1 to time out and
// forward the request to node2.
ChangeServersVotingStatus changeServers = new ChangeServersVotingStatus(
ImmutableMap.of(node1ID, true, node2ID, true));
node1RaftActorRef.tell(changeServers, testKit.getRef());
ServerChangeReply reply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), ServerChangeReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, reply.getStatus());
MessageCollectorActor.expectFirstMatching(node2Collector, ApplyJournalEntries.class);
verifyServerConfigurationPayloadEntry(node2RaftActor.getRaftActorContext().getReplicatedLog(),
votingServer(node1ID), votingServer(node2ID));
assertEquals("getRaftState", RaftState.Leader, node2RaftActor.getRaftState());
MessageCollectorActor.expectFirstMatching(node1Collector, ApplyJournalEntries.class);
verifyServerConfigurationPayloadEntry(node1RaftActor.getRaftActorContext().getReplicatedLog(),
votingServer(node1ID), votingServer(node2ID));
assertEquals("isVotingMember", true, node1RaftActor.getRaftActorContext().isVotingMember());
assertEquals("getRaftState", RaftState.Follower, node1RaftActor.getRaftState());
LOG.info("testChangeToVotingWithNoLeaderAndForwardedToOtherNodeAfterElectionTimeout ending");
}
@Test
public void testChangeToVotingWithNoLeaderAndOtherLeaderElected() {
LOG.info("testChangeToVotingWithNoLeaderAndOtherLeaderElected starting");
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(100, TimeUnit.MILLISECONDS));
configParams.setElectionTimeoutFactor(100000);
final String node1ID = "node1";
final String node2ID = "node2";
configParams.setPeerAddressResolver(peerId -> peerId.equals(node1ID)
? actorFactory.createTestActorPath(node1ID) : peerId.equals(node2ID)
? actorFactory.createTestActorPath(node2ID) : null);
ServerConfigurationPayload persistedServerConfig = new ServerConfigurationPayload(Arrays.asList(
new ServerInfo(node1ID, false), new ServerInfo(node2ID, true)));
SimpleReplicatedLogEntry persistedServerConfigEntry = new SimpleReplicatedLogEntry(0, 1, persistedServerConfig);
InMemoryJournal.addEntry(node1ID, 1, new UpdateElectionTerm(1, "node1"));
InMemoryJournal.addEntry(node1ID, 2, persistedServerConfigEntry);
InMemoryJournal.addEntry(node2ID, 1, new UpdateElectionTerm(1, "node1"));
InMemoryJournal.addEntry(node2ID, 2, persistedServerConfigEntry);
TestActorRef<MessageCollectorActor> node1Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
TestActorRef<CollectingMockRaftActor> node1RaftActorRef = actorFactory.createTestActor(
CollectingMockRaftActor.props(node1ID, ImmutableMap.<String, String>of(), configParams,
PERSISTENT, node1Collector).withDispatcher(Dispatchers.DefaultDispatcherId()), node1ID);
final CollectingMockRaftActor node1RaftActor = node1RaftActorRef.underlyingActor();
TestActorRef<MessageCollectorActor> node2Collector = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId("collector"));
TestActorRef<CollectingMockRaftActor> node2RaftActorRef = actorFactory.createTestActor(
CollectingMockRaftActor.props(node2ID, ImmutableMap.<String, String>of(), configParams,
PERSISTENT, node2Collector).withDispatcher(Dispatchers.DefaultDispatcherId()), node2ID);
CollectingMockRaftActor node2RaftActor = node2RaftActorRef.underlyingActor();
// Send a ChangeServersVotingStatus message to node1 to change node1 to voting. This should cause
// node1 to try to elect itself as leader in order to apply the new server config. But we'll drop
// RequestVote messages in node2 and make it the leader so node1 should forward the server change
// request to node2 when node2 is elected.
node2RaftActor.setDropMessageOfType(RequestVote.class);
ChangeServersVotingStatus changeServers = new ChangeServersVotingStatus(ImmutableMap.of(node1ID, true,
node2ID, true));
node1RaftActorRef.tell(changeServers, testKit.getRef());
MessageCollectorActor.expectFirstMatching(node2Collector, RequestVote.class);
node2RaftActorRef.tell(TimeoutNow.INSTANCE, ActorRef.noSender());
ServerChangeReply reply = testKit.expectMsgClass(JavaTestKit.duration("5 seconds"), ServerChangeReply.class);
assertEquals("getStatus", ServerChangeStatus.OK, reply.getStatus());
MessageCollectorActor.expectFirstMatching(node1Collector, ApplyJournalEntries.class);
verifyServerConfigurationPayloadEntry(node1RaftActor.getRaftActorContext().getReplicatedLog(),
votingServer(node1ID), votingServer(node2ID));
assertEquals("isVotingMember", true, node1RaftActor.getRaftActorContext().isVotingMember());
assertEquals("getRaftState", RaftState.Follower, node1RaftActor.getRaftState());
MessageCollectorActor.expectFirstMatching(node2Collector, ApplyJournalEntries.class);
verifyServerConfigurationPayloadEntry(node2RaftActor.getRaftActorContext().getReplicatedLog(),
votingServer(node1ID), votingServer(node2ID));
assertEquals("getRaftState", RaftState.Leader, node2RaftActor.getRaftState());
LOG.info("testChangeToVotingWithNoLeaderAndOtherLeaderElected ending");
}
private static void verifyRaftState(RaftState expState, RaftActor... raftActors) {
Stopwatch sw = Stopwatch.createStarted();
while (sw.elapsed(TimeUnit.SECONDS) <= 5) {
for (RaftActor raftActor : raftActors) {
if (raftActor.getRaftState() == expState) {
return;
}
}
}
fail("None of the RaftActors have state " + expState);
}
private static ServerInfo votingServer(String id) {
return new ServerInfo(id, true);
}
private static ServerInfo nonVotingServer(String id) {
return new ServerInfo(id, false);
}
private TestActorRef<MessageCollectorActor> newLeaderCollectorActor(MockLeaderRaftActor leaderRaftActor) {
return newCollectorActor(leaderRaftActor, LEADER_ID);
}
private TestActorRef<MessageCollectorActor> newCollectorActor(AbstractMockRaftActor raftActor, String id) {
TestActorRef<MessageCollectorActor> collectorActor = actorFactory.createTestActor(
MessageCollectorActor.props().withDispatcher(Dispatchers.DefaultDispatcherId()),
actorFactory.generateActorId(id + "Collector"));
raftActor.setCollectorActor(collectorActor);
return collectorActor;
}
private static void verifyServerConfigurationPayloadEntry(ReplicatedLog log, ServerInfo... expected) {
ReplicatedLogEntry logEntry = log.get(log.lastIndex());
assertEquals("Last log entry payload class", ServerConfigurationPayload.class, logEntry.getData().getClass());
ServerConfigurationPayload payload = (ServerConfigurationPayload)logEntry.getData();
assertEquals("Server config", Sets.newHashSet(expected), Sets.newHashSet(payload.getServerConfig()));
}
private static RaftActorContextImpl newFollowerContext(String id, TestActorRef<? extends UntypedActor> actor) {
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(100, TimeUnit.MILLISECONDS));
configParams.setElectionTimeoutFactor(100000);
NonPersistentDataProvider noPersistence = new NonPersistentDataProvider();
ElectionTermImpl termInfo = new ElectionTermImpl(noPersistence, id, LOG);
termInfo.update(1, LEADER_ID);
return new RaftActorContextImpl(actor, actor.underlyingActor().getContext(),
id, termInfo, -1, -1, ImmutableMap.of(LEADER_ID, ""), configParams,
noPersistence, applyState -> actor.tell(applyState, actor), LOG);
}
abstract static class AbstractMockRaftActor extends MockRaftActor {
private volatile TestActorRef<MessageCollectorActor> collectorActor;
private volatile Class<?> dropMessageOfType;
AbstractMockRaftActor(String id, Map<String, String> peerAddresses, Optional<ConfigParams> config,
boolean persistent, TestActorRef<MessageCollectorActor> collectorActor) {
super(builder().id(id).peerAddresses(peerAddresses).config(config.get())
.persistent(Optional.of(persistent)));
this.collectorActor = collectorActor;
}
void setDropMessageOfType(Class<?> dropMessageOfType) {
this.dropMessageOfType = dropMessageOfType;
}
void setCollectorActor(TestActorRef<MessageCollectorActor> collectorActor) {
this.collectorActor = collectorActor;
}
@Override
public void handleCommand(Object message) {
if (dropMessageOfType == null || !dropMessageOfType.equals(message.getClass())) {
super.handleCommand(message);
}
if (collectorActor != null) {
collectorActor.tell(message, getSender());
}
}
}
public static class CollectingMockRaftActor extends AbstractMockRaftActor {
CollectingMockRaftActor(String id, Map<String, String> peerAddresses, Optional<ConfigParams> config,
boolean persistent, TestActorRef<MessageCollectorActor> collectorActor) {
super(id, peerAddresses, config, persistent, collectorActor);
snapshotCohortDelegate = new RaftActorSnapshotCohort() {
@Override
public void createSnapshot(ActorRef actorRef, java.util.Optional<OutputStream> installSnapshotStream) {
actorRef.tell(new CaptureSnapshotReply(ByteState.empty(), installSnapshotStream), actorRef);
}
@Override
public void applySnapshot(
org.opendaylight.controller.cluster.raft.persisted.Snapshot.State snapshotState) {
}
@Override
public org.opendaylight.controller.cluster.raft.persisted.Snapshot.State deserializeSnapshot(
ByteSource snapshotBytes) {
throw new UnsupportedOperationException();
}
};
}
public static Props props(final String id, final Map<String, String> peerAddresses,
ConfigParams config, boolean persistent, TestActorRef<MessageCollectorActor> collectorActor) {
return Props.create(CollectingMockRaftActor.class, id, peerAddresses, Optional.of(config),
persistent, collectorActor);
}
}
public static class MockLeaderRaftActor extends AbstractMockRaftActor {
public MockLeaderRaftActor(Map<String, String> peerAddresses, ConfigParams config,
RaftActorContext fromContext) {
super(LEADER_ID, peerAddresses, Optional.of(config), NO_PERSISTENCE, null);
setPersistence(false);
RaftActorContext context = getRaftActorContext();
for (int i = 0; i < fromContext.getReplicatedLog().size(); i++) {
ReplicatedLogEntry entry = fromContext.getReplicatedLog().get(i);
getState().add(entry.getData());
context.getReplicatedLog().append(entry);
}
context.setCommitIndex(fromContext.getCommitIndex());
context.setLastApplied(fromContext.getLastApplied());
context.getTermInformation().update(fromContext.getTermInformation().getCurrentTerm(),
fromContext.getTermInformation().getVotedFor());
}
@Override
protected void initializeBehavior() {
changeCurrentBehavior(new Leader(getRaftActorContext()));
initializeBehaviorComplete.countDown();
}
@Override
@SuppressWarnings("checkstyle:IllegalCatch")
public void createSnapshot(ActorRef actorRef, java.util.Optional<OutputStream> installSnapshotStream) {
MockSnapshotState snapshotState = new MockSnapshotState(new ArrayList<>(getState()));
if (installSnapshotStream.isPresent()) {
SerializationUtils.serialize(snapshotState, installSnapshotStream.get());
}
actorRef.tell(new CaptureSnapshotReply(snapshotState, installSnapshotStream), actorRef);
}
static Props props(Map<String, String> peerAddresses, RaftActorContext fromContext) {
DefaultConfigParamsImpl configParams = new DefaultConfigParamsImpl();
configParams.setHeartBeatInterval(new FiniteDuration(100, TimeUnit.MILLISECONDS));
configParams.setElectionTimeoutFactor(10);
return Props.create(MockLeaderRaftActor.class, peerAddresses, configParams, fromContext);
}
}
public static class MockNewFollowerRaftActor extends AbstractMockRaftActor {
public MockNewFollowerRaftActor(ConfigParams config, TestActorRef<MessageCollectorActor> collectorActor) {
super(NEW_SERVER_ID, Maps.<String, String>newHashMap(), Optional.of(config), NO_PERSISTENCE,
collectorActor);
setPersistence(false);
}
static Props props(ConfigParams config, TestActorRef<MessageCollectorActor> collectorActor) {
return Props.create(MockNewFollowerRaftActor.class, config, collectorActor);
}
}
}