package org.opendaylight.controller.cluster.raft.behaviors;
import akka.actor.ActorRef;
-import akka.actor.ActorSystem;
import akka.actor.Props;
import akka.testkit.JavaTestKit;
+import com.google.common.base.Optional;
import com.google.protobuf.ByteString;
import org.junit.Assert;
import org.junit.Test;
import org.opendaylight.controller.cluster.raft.DefaultConfigParamsImpl;
import org.opendaylight.controller.cluster.raft.FollowerLogInformation;
-import org.opendaylight.controller.cluster.raft.FollowerLogInformationImpl;
import org.opendaylight.controller.cluster.raft.MockRaftActorContext;
import org.opendaylight.controller.cluster.raft.RaftActorContext;
import org.opendaylight.controller.cluster.raft.RaftState;
import org.opendaylight.controller.cluster.raft.ReplicatedLogImplEntry;
import org.opendaylight.controller.cluster.raft.SerializationUtils;
+import org.opendaylight.controller.cluster.raft.base.messages.ApplyLogEntries;
import org.opendaylight.controller.cluster.raft.base.messages.ApplyState;
+import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshot;
+import org.opendaylight.controller.cluster.raft.base.messages.InitiateInstallSnapshot;
import org.opendaylight.controller.cluster.raft.base.messages.Replicate;
import org.opendaylight.controller.cluster.raft.base.messages.SendHeartBeat;
import org.opendaylight.controller.cluster.raft.base.messages.SendInstallSnapshot;
import org.opendaylight.controller.cluster.raft.messages.AppendEntries;
+import org.opendaylight.controller.cluster.raft.messages.AppendEntriesReply;
import org.opendaylight.controller.cluster.raft.messages.InstallSnapshot;
import org.opendaylight.controller.cluster.raft.messages.InstallSnapshotReply;
+import org.opendaylight.controller.cluster.raft.messages.RequestVoteReply;
import org.opendaylight.controller.cluster.raft.utils.DoNothingActor;
+import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
+import org.opendaylight.controller.protobuff.messages.cluster.raft.AppendEntriesMessages;
import org.opendaylight.controller.protobuff.messages.cluster.raft.InstallSnapshotMessages;
+import scala.concurrent.duration.FiniteDuration;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.ObjectOutputStream;
import java.util.HashMap;
+import java.util.List;
import java.util.Map;
-import java.util.concurrent.atomic.AtomicLong;
+import java.util.concurrent.TimeUnit;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
// handle message should return the Leader state when it receives an
// unknown message
- RaftState state = leader.handleMessage(senderActor, "foo");
- Assert.assertEquals(RaftState.Leader, state);
+ RaftActorBehavior behavior = leader.handleMessage(senderActor, "foo");
+ Assert.assertTrue(behavior instanceof Leader);
}};
}
ActorRef followerActor = getTestActor();
- MockRaftActorContext actorContext =
- (MockRaftActorContext) createActorContext();
+ MockRaftActorContext actorContext = (MockRaftActorContext) createActorContext();
- Map<String, String> peerAddresses = new HashMap();
+ Map<String, String> peerAddresses = new HashMap<>();
peerAddresses.put(followerActor.path().toString(),
followerActor.path().toString());
MockRaftActorContext actorContext =
(MockRaftActorContext) createActorContext();
- Map<String, String> peerAddresses = new HashMap();
+ Map<String, String> peerAddresses = new HashMap<>();
peerAddresses.put(followerActor.path().toString(),
followerActor.path().toString());
actorContext.setPeerAddresses(peerAddresses);
Leader leader = new Leader(actorContext);
- RaftState raftState = leader
+ RaftActorBehavior raftBehavior = leader
.handleMessage(senderActor, new Replicate(null, null,
new MockRaftActorContext.MockReplicatedLogEntry(1,
100,
));
// State should not change
- assertEquals(RaftState.Leader, raftState);
+ assertTrue(raftBehavior instanceof Leader);
final String out =
new ExpectMsg<String>(duration("1 seconds"), "match hint") {
}.get(); // this extracts the received message
assertEquals("match", out);
-
}
-
-
};
}};
}
actorContext.getReplicatedLog().removeFrom(0);
- actorContext.getReplicatedLog().append(new ReplicatedLogImplEntry(0, 1,
- new MockRaftActorContext.MockPayload("foo")));
-
- ReplicatedLogImplEntry entry =
- new ReplicatedLogImplEntry(1, 1,
- new MockRaftActorContext.MockPayload("foo"));
-
- actorContext.getReplicatedLog().append(entry);
+ actorContext.setReplicatedLog(
+ new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 2, 1)
+ .build());
Leader leader = new Leader(actorContext);
- RaftState raftState = leader
- .handleMessage(senderActor, new Replicate(null, "state-id",entry));
+ RaftActorBehavior raftBehavior = leader
+ .handleMessage(senderActor, new Replicate(null, "state-id",actorContext.getReplicatedLog().get(1)));
// State should not change
- assertEquals(RaftState.Leader, raftState);
+ assertTrue(raftBehavior instanceof Leader);
assertEquals(1, actorContext.getCommitIndex());
}
@Test
- public void testSendInstallSnapshot() {
- new LeaderTestKit(getSystem()) {{
+ public void testSendAppendEntriesOnAnInProgressInstallSnapshot() throws Exception {
+ new JavaTestKit(getSystem()) {{
+ ActorRef followerActor = getSystem().actorOf(Props.create(MessageCollectorActor.class));
- new Within(duration("1 seconds")) {
- protected void run() {
- ActorRef followerActor = getTestActor();
+ Map<String, String> peerAddresses = new HashMap<>();
+ peerAddresses.put(followerActor.path().toString(),
+ followerActor.path().toString());
- Map<String, String> peerAddresses = new HashMap();
- peerAddresses.put(followerActor.path().toString(),
- followerActor.path().toString());
+ MockRaftActorContext actorContext =
+ (MockRaftActorContext) createActorContext(leaderActor);
+ actorContext.setPeerAddresses(peerAddresses);
+ Map<String, String> leadersSnapshot = new HashMap<>();
+ leadersSnapshot.put("1", "A");
+ leadersSnapshot.put("2", "B");
+ leadersSnapshot.put("3", "C");
- MockRaftActorContext actorContext =
- (MockRaftActorContext) createActorContext(getRef());
- actorContext.setPeerAddresses(peerAddresses);
+ //clears leaders log
+ actorContext.getReplicatedLog().removeFrom(0);
+ final int followersLastIndex = 2;
+ final int snapshotIndex = 3;
+ final int newEntryIndex = 4;
+ final int snapshotTerm = 1;
+ final int currentTerm = 2;
- Map<String, String> leadersSnapshot = new HashMap<>();
- leadersSnapshot.put("1", "A");
- leadersSnapshot.put("2", "B");
- leadersSnapshot.put("3", "C");
+ // set the snapshot variables in replicatedlog
+ actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex);
+ actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm);
+ actorContext.setCommitIndex(followersLastIndex);
+ //set follower timeout to 2 mins, helps during debugging
+ actorContext.setConfigParams(new MockConfigParamsImpl(120000L, 10));
- //clears leaders log
- actorContext.getReplicatedLog().removeFrom(0);
+ MockLeader leader = new MockLeader(actorContext);
- final int followersLastIndex = 2;
- final int snapshotIndex = 3;
- final int newEntryIndex = 4;
- final int snapshotTerm = 1;
- final int currentTerm = 2;
-
- // set the snapshot variables in replicatedlog
- actorContext.getReplicatedLog().setSnapshot(
- toByteString(leadersSnapshot));
- actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex);
- actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm);
-
- MockLeader leader = new MockLeader(actorContext);
- // set the follower info in leader
- leader.addToFollowerToLog(followerActor.path().toString(), followersLastIndex, -1);
-
- // new entry
- ReplicatedLogImplEntry entry =
- new ReplicatedLogImplEntry(newEntryIndex, currentTerm,
- new MockRaftActorContext.MockPayload("D"));
-
- // this should invoke a sendinstallsnapshot as followersLastIndex < snapshotIndex
- RaftState raftState = leader.handleMessage(
- senderActor, new Replicate(null, "state-id", entry));
-
- assertEquals(RaftState.Leader, raftState);
-
- // we might receive some heartbeat messages, so wait till we SendInstallSnapshot
- Boolean[] matches = new ReceiveWhile<Boolean>(Boolean.class, duration("2 seconds")) {
- @Override
- protected Boolean match(Object o) throws Exception {
- if (o instanceof SendInstallSnapshot) {
- return true;
- }
- return false;
- }
- }.get();
+ // new entry
+ ReplicatedLogImplEntry entry =
+ new ReplicatedLogImplEntry(newEntryIndex, currentTerm,
+ new MockRaftActorContext.MockPayload("D"));
- boolean sendInstallSnapshotReceived = false;
- for (Boolean b: matches) {
- sendInstallSnapshotReceived = b | sendInstallSnapshotReceived;
- }
+ //update follower timestamp
+ leader.markFollowerActive(followerActor.path().toString());
+
+ ByteString bs = toByteString(leadersSnapshot);
+ leader.setSnapshot(Optional.of(bs));
+ leader.createFollowerToSnapshot(followerActor.path().toString(), bs);
+
+ //send first chunk and no InstallSnapshotReply received yet
+ leader.getFollowerToSnapshot().getNextChunk();
+ leader.getFollowerToSnapshot().incrementChunkIndex();
+
+ leader.handleMessage(leaderActor, new SendHeartBeat());
+
+ AppendEntriesMessages.AppendEntries aeproto = (AppendEntriesMessages.AppendEntries)MessageCollectorActor.getFirstMatching(
+ followerActor, AppendEntries.SERIALIZABLE_CLASS);
+
+ assertNotNull("AppendEntries should be sent even if InstallSnapshotReply is not " +
+ "received", aeproto);
+
+ AppendEntries ae = (AppendEntries) SerializationUtils.fromSerializable(aeproto);
- assertTrue(sendInstallSnapshotReceived);
+ assertTrue("AppendEntries should be sent with empty entries", ae.getEntries().isEmpty());
+ //InstallSnapshotReply received
+ leader.getFollowerToSnapshot().markSendStatus(true);
+
+ leader.handleMessage(senderActor, new SendHeartBeat());
+
+ InstallSnapshotMessages.InstallSnapshot isproto = (InstallSnapshotMessages.InstallSnapshot)
+ MessageCollectorActor.getFirstMatching(followerActor,
+ InstallSnapshot.SERIALIZABLE_CLASS);
+
+ assertNotNull("Installsnapshot should get called for sending the next chunk of snapshot",
+ isproto);
+
+ InstallSnapshot is = (InstallSnapshot) SerializationUtils.fromSerializable(isproto);
+
+ assertEquals(snapshotIndex, is.getLastIncludedIndex());
+
+ }};
+ }
+
+ @Test
+ public void testSendAppendEntriesSnapshotScenario() {
+ new JavaTestKit(getSystem()) {{
+
+ ActorRef followerActor = getTestActor();
+
+ Map<String, String> peerAddresses = new HashMap<>();
+ peerAddresses.put(followerActor.path().toString(),
+ followerActor.path().toString());
+
+ MockRaftActorContext actorContext =
+ (MockRaftActorContext) createActorContext(getRef());
+ actorContext.setPeerAddresses(peerAddresses);
+
+ Map<String, String> leadersSnapshot = new HashMap<>();
+ leadersSnapshot.put("1", "A");
+ leadersSnapshot.put("2", "B");
+ leadersSnapshot.put("3", "C");
+
+ //clears leaders log
+ actorContext.getReplicatedLog().removeFrom(0);
+
+ final int followersLastIndex = 2;
+ final int snapshotIndex = 3;
+ final int newEntryIndex = 4;
+ final int snapshotTerm = 1;
+ final int currentTerm = 2;
+
+ // set the snapshot variables in replicatedlog
+ actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex);
+ actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm);
+ actorContext.setCommitIndex(followersLastIndex);
+
+ Leader leader = new Leader(actorContext);
+
+ // new entry
+ ReplicatedLogImplEntry entry =
+ new ReplicatedLogImplEntry(newEntryIndex, currentTerm,
+ new MockRaftActorContext.MockPayload("D"));
+
+ //update follower timestamp
+ leader.markFollowerActive(followerActor.path().toString());
+
+ // this should invoke a sendinstallsnapshot as followersLastIndex < snapshotIndex
+ RaftActorBehavior raftBehavior = leader.handleMessage(
+ senderActor, new Replicate(null, "state-id", entry));
+
+ assertTrue(raftBehavior instanceof Leader);
+
+ // we might receive some heartbeat messages, so wait till we InitiateInstallSnapshot
+ Boolean[] matches = new ReceiveWhile<Boolean>(Boolean.class, duration("2 seconds")) {
+ @Override
+ protected Boolean match(Object o) throws Exception {
+ if (o instanceof InitiateInstallSnapshot) {
+ return true;
+ }
+ return false;
}
- };
+ }.get();
+
+ boolean initiateInitiateInstallSnapshot = false;
+ for (Boolean b: matches) {
+ initiateInitiateInstallSnapshot = b | initiateInitiateInstallSnapshot;
+ }
+
+ assertTrue(initiateInitiateInstallSnapshot);
}};
}
@Test
- public void testInstallSnapshot() {
- new LeaderTestKit(getSystem()) {{
+ public void testInitiateInstallSnapshot() throws Exception {
+ new JavaTestKit(getSystem()) {{
- new Within(duration("1 seconds")) {
- protected void run() {
- ActorRef followerActor = getTestActor();
+ ActorRef leaderActor = getSystem().actorOf(Props.create(MessageCollectorActor.class));
- Map<String, String> peerAddresses = new HashMap();
- peerAddresses.put(followerActor.path().toString(),
- followerActor.path().toString());
+ ActorRef followerActor = getTestActor();
- MockRaftActorContext actorContext =
- (MockRaftActorContext) createActorContext();
- actorContext.setPeerAddresses(peerAddresses);
+ Map<String, String> peerAddresses = new HashMap<>();
+ peerAddresses.put(followerActor.path().toString(),
+ followerActor.path().toString());
- Map<String, String> leadersSnapshot = new HashMap<>();
- leadersSnapshot.put("1", "A");
- leadersSnapshot.put("2", "B");
- leadersSnapshot.put("3", "C");
+ MockRaftActorContext actorContext =
+ (MockRaftActorContext) createActorContext(leaderActor);
+ actorContext.setPeerAddresses(peerAddresses);
- //clears leaders log
- actorContext.getReplicatedLog().removeFrom(0);
+ Map<String, String> leadersSnapshot = new HashMap<>();
+ leadersSnapshot.put("1", "A");
+ leadersSnapshot.put("2", "B");
+ leadersSnapshot.put("3", "C");
- final int followersLastIndex = 2;
- final int snapshotIndex = 3;
- final int newEntryIndex = 4;
- final int snapshotTerm = 1;
- final int currentTerm = 2;
+ //clears leaders log
+ actorContext.getReplicatedLog().removeFrom(0);
- // set the snapshot variables in replicatedlog
- actorContext.getReplicatedLog().setSnapshot(toByteString(leadersSnapshot));
- actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex);
- actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm);
+ final int followersLastIndex = 2;
+ final int snapshotIndex = 3;
+ final int newEntryIndex = 4;
+ final int snapshotTerm = 1;
+ final int currentTerm = 2;
- actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString());
+ // set the snapshot variables in replicatedlog
+ actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex);
+ actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm);
+ actorContext.setLastApplied(3);
+ actorContext.setCommitIndex(followersLastIndex);
- MockLeader leader = new MockLeader(actorContext);
- // set the follower info in leader
- leader.addToFollowerToLog(followerActor.path().toString(), followersLastIndex, -1);
+ Leader leader = new Leader(actorContext);
+ // set the snapshot as absent and check if capture-snapshot is invoked.
+ leader.setSnapshot(Optional.<ByteString>absent());
- // new entry
- ReplicatedLogImplEntry entry =
- new ReplicatedLogImplEntry(newEntryIndex, currentTerm,
- new MockRaftActorContext.MockPayload("D"));
+ // new entry
+ ReplicatedLogImplEntry entry =
+ new ReplicatedLogImplEntry(newEntryIndex, currentTerm,
+ new MockRaftActorContext.MockPayload("D"));
+ actorContext.getReplicatedLog().append(entry);
- RaftState raftState = leader.handleMessage(senderActor, new SendInstallSnapshot());
+ // this should invoke a sendinstallsnapshot as followersLastIndex < snapshotIndex
+ RaftActorBehavior raftBehavior = leader.handleMessage(
+ leaderActor, new InitiateInstallSnapshot());
- assertEquals(RaftState.Leader, raftState);
+ CaptureSnapshot cs = (CaptureSnapshot) MessageCollectorActor.
+ getFirstMatching(leaderActor, CaptureSnapshot.class);
- // check if installsnapshot gets called with the correct values.
- final String out =
- new ExpectMsg<String>(duration("1 seconds"), "match hint") {
- // do not put code outside this method, will run afterwards
- protected String match(Object in) {
- if (in instanceof InstallSnapshotMessages.InstallSnapshot) {
- InstallSnapshot is = (InstallSnapshot)
- SerializationUtils.fromSerializable(in);
- if (is.getData() == null) {
- return "InstallSnapshot data is null";
- }
- if (is.getLastIncludedIndex() != snapshotIndex) {
- return is.getLastIncludedIndex() + "!=" + snapshotIndex;
- }
- if (is.getLastIncludedTerm() != snapshotTerm) {
- return is.getLastIncludedTerm() + "!=" + snapshotTerm;
- }
- if (is.getTerm() == currentTerm) {
- return is.getTerm() + "!=" + currentTerm;
- }
+ assertNotNull(cs);
- return "match";
+ assertTrue(cs.isInstallSnapshotInitiated());
+ assertEquals(3, cs.getLastAppliedIndex());
+ assertEquals(1, cs.getLastAppliedTerm());
+ assertEquals(4, cs.getLastIndex());
+ assertEquals(2, cs.getLastTerm());
+ }};
+ }
- } else {
- return "message mismatch:" + in.getClass();
- }
+ @Test
+ public void testInstallSnapshot() {
+ new JavaTestKit(getSystem()) {{
+
+ ActorRef followerActor = getTestActor();
+
+ Map<String, String> peerAddresses = new HashMap<>();
+ peerAddresses.put(followerActor.path().toString(),
+ followerActor.path().toString());
+
+ MockRaftActorContext actorContext =
+ (MockRaftActorContext) createActorContext();
+ actorContext.setPeerAddresses(peerAddresses);
+
+
+ Map<String, String> leadersSnapshot = new HashMap<>();
+ leadersSnapshot.put("1", "A");
+ leadersSnapshot.put("2", "B");
+ leadersSnapshot.put("3", "C");
+
+ //clears leaders log
+ actorContext.getReplicatedLog().removeFrom(0);
+
+ final int followersLastIndex = 2;
+ final int snapshotIndex = 3;
+ final int newEntryIndex = 4;
+ final int snapshotTerm = 1;
+ final int currentTerm = 2;
+
+ // set the snapshot variables in replicatedlog
+ actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex);
+ actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm);
+ actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString());
+ actorContext.setCommitIndex(followersLastIndex);
+
+ Leader leader = new Leader(actorContext);
+
+ // new entry
+ ReplicatedLogImplEntry entry =
+ new ReplicatedLogImplEntry(newEntryIndex, currentTerm,
+ new MockRaftActorContext.MockPayload("D"));
+
+ RaftActorBehavior raftBehavior = leader.handleMessage(senderActor,
+ new SendInstallSnapshot(toByteString(leadersSnapshot)));
+
+ assertTrue(raftBehavior instanceof Leader);
+
+ // check if installsnapshot gets called with the correct values.
+ final String out =
+ new ExpectMsg<String>(duration("1 seconds"), "match hint") {
+ // do not put code outside this method, will run afterwards
+ protected String match(Object in) {
+ if (in instanceof InstallSnapshotMessages.InstallSnapshot) {
+ InstallSnapshot is = (InstallSnapshot)
+ SerializationUtils.fromSerializable(in);
+ if (is.getData() == null) {
+ return "InstallSnapshot data is null";
+ }
+ if (is.getLastIncludedIndex() != snapshotIndex) {
+ return is.getLastIncludedIndex() + "!=" + snapshotIndex;
+ }
+ if (is.getLastIncludedTerm() != snapshotTerm) {
+ return is.getLastIncludedTerm() + "!=" + snapshotTerm;
+ }
+ if (is.getTerm() == currentTerm) {
+ return is.getTerm() + "!=" + currentTerm;
}
- }.get(); // this extracts the received message
- assertEquals("match", out);
- }
- };
+ return "match";
+
+ } else {
+ return "message mismatch:" + in.getClass();
+ }
+ }
+ }.get(); // this extracts the received message
+
+ assertEquals("match", out);
}};
}
@Test
public void testHandleInstallSnapshotReplyLastChunk() {
- new LeaderTestKit(getSystem()) {{
- new Within(duration("1 seconds")) {
- protected void run() {
- ActorRef followerActor = getTestActor();
+ new JavaTestKit(getSystem()) {{
- Map<String, String> peerAddresses = new HashMap();
- peerAddresses.put(followerActor.path().toString(),
- followerActor.path().toString());
+ ActorRef followerActor = getTestActor();
- MockRaftActorContext actorContext =
- (MockRaftActorContext) createActorContext();
- actorContext.setPeerAddresses(peerAddresses);
+ Map<String, String> peerAddresses = new HashMap<>();
+ peerAddresses.put(followerActor.path().toString(),
+ followerActor.path().toString());
- final int followersLastIndex = 2;
- final int snapshotIndex = 3;
- final int newEntryIndex = 4;
- final int snapshotTerm = 1;
- final int currentTerm = 2;
-
- MockLeader leader = new MockLeader(actorContext);
- // set the follower info in leader
- leader.addToFollowerToLog(followerActor.path().toString(), followersLastIndex, -1);
-
- Map<String, String> leadersSnapshot = new HashMap<>();
- leadersSnapshot.put("1", "A");
- leadersSnapshot.put("2", "B");
- leadersSnapshot.put("3", "C");
-
- // set the snapshot variables in replicatedlog
- actorContext.getReplicatedLog().setSnapshot(
- toByteString(leadersSnapshot));
- actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex);
- actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm);
- actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString());
-
- ByteString bs = toByteString(leadersSnapshot);
- leader.createFollowerToSnapshot(followerActor.path().toString(), bs);
- while(!leader.getFollowerToSnapshot().isLastChunk(leader.getFollowerToSnapshot().getChunkIndex())) {
- leader.getFollowerToSnapshot().getNextChunk();
- leader.getFollowerToSnapshot().incrementChunkIndex();
- }
+ final int followersLastIndex = 2;
+ final int snapshotIndex = 3;
+ final int newEntryIndex = 4;
+ final int snapshotTerm = 1;
+ final int currentTerm = 2;
- //clears leaders log
- actorContext.getReplicatedLog().removeFrom(0);
+ MockRaftActorContext actorContext =
+ (MockRaftActorContext) createActorContext();
+ actorContext.setPeerAddresses(peerAddresses);
+ actorContext.setCommitIndex(followersLastIndex);
- RaftState raftState = leader.handleMessage(senderActor,
- new InstallSnapshotReply(currentTerm, followerActor.path().toString(),
- leader.getFollowerToSnapshot().getChunkIndex(), true));
+ MockLeader leader = new MockLeader(actorContext);
- assertEquals(RaftState.Leader, raftState);
+ Map<String, String> leadersSnapshot = new HashMap<>();
+ leadersSnapshot.put("1", "A");
+ leadersSnapshot.put("2", "B");
+ leadersSnapshot.put("3", "C");
- assertEquals(leader.mapFollowerToSnapshot.size(), 0);
- assertEquals(leader.followerToLog.size(), 1);
- assertNotNull(leader.followerToLog.get(followerActor.path().toString()));
- FollowerLogInformation fli = leader.followerToLog.get(followerActor.path().toString());
- assertEquals(snapshotIndex, fli.getMatchIndex().get());
- assertEquals(snapshotIndex, fli.getMatchIndex().get());
- assertEquals(snapshotIndex + 1, fli.getNextIndex().get());
- }
- };
+ // set the snapshot variables in replicatedlog
+
+ actorContext.getReplicatedLog().setSnapshotIndex(snapshotIndex);
+ actorContext.getReplicatedLog().setSnapshotTerm(snapshotTerm);
+ actorContext.getTermInformation().update(currentTerm, leaderActor.path().toString());
+
+ ByteString bs = toByteString(leadersSnapshot);
+ leader.setSnapshot(Optional.of(bs));
+ leader.createFollowerToSnapshot(followerActor.path().toString(), bs);
+ while(!leader.getFollowerToSnapshot().isLastChunk(leader.getFollowerToSnapshot().getChunkIndex())) {
+ leader.getFollowerToSnapshot().getNextChunk();
+ leader.getFollowerToSnapshot().incrementChunkIndex();
+ }
+
+ //clears leaders log
+ actorContext.getReplicatedLog().removeFrom(0);
+
+ RaftActorBehavior raftBehavior = leader.handleMessage(senderActor,
+ new InstallSnapshotReply(currentTerm, followerActor.path().toString(),
+ leader.getFollowerToSnapshot().getChunkIndex(), true));
+
+ assertTrue(raftBehavior instanceof Leader);
+
+ assertEquals(leader.mapFollowerToSnapshot.size(), 0);
+ assertEquals(leader.followerToLog.size(), 1);
+ assertNotNull(leader.followerToLog.get(followerActor.path().toString()));
+ FollowerLogInformation fli = leader.followerToLog.get(followerActor.path().toString());
+ assertEquals(snapshotIndex, fli.getMatchIndex().get());
+ assertEquals(snapshotIndex, fli.getMatchIndex().get());
+ assertEquals(snapshotIndex + 1, fli.getNextIndex().get());
}};
}
return null;
}
- private static class LeaderTestKit extends JavaTestKit {
+ public static class ForwardMessageToBehaviorActor extends MessageCollectorActor {
+ private static AbstractRaftActorBehavior behavior;
- private LeaderTestKit(ActorSystem actorSystem) {
- super(actorSystem);
- }
+ public ForwardMessageToBehaviorActor(){
- protected void waitForLogMessage(final Class logLevel, ActorRef subject, String logMessage){
- // Wait for a specific log message to show up
- final boolean result =
- new JavaTestKit.EventFilter<Boolean>(logLevel
- ) {
- @Override
- protected Boolean run() {
- return true;
- }
- }.from(subject.path().toString())
- .message(logMessage)
- .occurrences(1).exec();
+ }
- Assert.assertEquals(true, result);
+ @Override public void onReceive(Object message) throws Exception {
+ super.onReceive(message);
+ behavior.handleMessage(sender(), message);
+ }
+ public static void setBehavior(AbstractRaftActorBehavior behavior){
+ ForwardMessageToBehaviorActor.behavior = behavior;
}
}
+ @Test
+ public void testLeaderCreatedWithCommitIndexLessThanLastIndex() throws Exception {
+ new JavaTestKit(getSystem()) {{
+
+ ActorRef leaderActor = getSystem().actorOf(Props.create(MessageCollectorActor.class));
+
+ MockRaftActorContext leaderActorContext =
+ new MockRaftActorContext("leader", getSystem(), leaderActor);
+
+ ActorRef followerActor = getSystem().actorOf(Props.create(ForwardMessageToBehaviorActor.class));
+
+ MockRaftActorContext followerActorContext =
+ new MockRaftActorContext("follower", getSystem(), followerActor);
+
+ Follower follower = new Follower(followerActorContext);
+
+ ForwardMessageToBehaviorActor.setBehavior(follower);
+
+ Map<String, String> peerAddresses = new HashMap<>();
+ peerAddresses.put(followerActor.path().toString(),
+ followerActor.path().toString());
+
+ leaderActorContext.setPeerAddresses(peerAddresses);
+
+ leaderActorContext.getReplicatedLog().removeFrom(0);
+
+ //create 3 entries
+ leaderActorContext.setReplicatedLog(
+ new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build());
+
+ leaderActorContext.setCommitIndex(1);
+
+ followerActorContext.getReplicatedLog().removeFrom(0);
+
+ // follower too has the exact same log entries and has the same commit index
+ followerActorContext.setReplicatedLog(
+ new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build());
+
+ followerActorContext.setCommitIndex(1);
+
+ Leader leader = new Leader(leaderActorContext);
+ leader.markFollowerActive(followerActor.path().toString());
+
+ leader.handleMessage(leaderActor, new SendHeartBeat());
+
+ AppendEntriesMessages.AppendEntries appendEntries =
+ (AppendEntriesMessages.AppendEntries) MessageCollectorActor
+ .getFirstMatching(followerActor, AppendEntriesMessages.AppendEntries.class);
+
+ assertNotNull(appendEntries);
+
+ assertEquals(1, appendEntries.getLeaderCommit());
+ assertEquals(1, appendEntries.getLogEntries(0).getIndex());
+ assertEquals(0, appendEntries.getPrevLogIndex());
+
+ AppendEntriesReply appendEntriesReply =
+ (AppendEntriesReply) MessageCollectorActor.getFirstMatching(
+ leaderActor, AppendEntriesReply.class);
+
+ assertNotNull(appendEntriesReply);
+
+ // follower returns its next index
+ assertEquals(2, appendEntriesReply.getLogLastIndex());
+ assertEquals(1, appendEntriesReply.getLogLastTerm());
+
+ }};
+ }
+
+
+ @Test
+ public void testLeaderCreatedWithCommitIndexLessThanFollowersCommitIndex() throws Exception {
+ new JavaTestKit(getSystem()) {{
+
+ ActorRef leaderActor = getSystem().actorOf(Props.create(MessageCollectorActor.class));
+
+ MockRaftActorContext leaderActorContext =
+ new MockRaftActorContext("leader", getSystem(), leaderActor);
+
+ ActorRef followerActor = getSystem().actorOf(
+ Props.create(ForwardMessageToBehaviorActor.class));
+
+ MockRaftActorContext followerActorContext =
+ new MockRaftActorContext("follower", getSystem(), followerActor);
+
+ Follower follower = new Follower(followerActorContext);
+
+ ForwardMessageToBehaviorActor.setBehavior(follower);
+
+ Map<String, String> peerAddresses = new HashMap<>();
+ peerAddresses.put(followerActor.path().toString(),
+ followerActor.path().toString());
+
+ leaderActorContext.setPeerAddresses(peerAddresses);
+
+ leaderActorContext.getReplicatedLog().removeFrom(0);
+
+ leaderActorContext.setReplicatedLog(
+ new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build());
+
+ leaderActorContext.setCommitIndex(1);
+
+ followerActorContext.getReplicatedLog().removeFrom(0);
+
+ followerActorContext.setReplicatedLog(
+ new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build());
+
+ // follower has the same log entries but its commit index > leaders commit index
+ followerActorContext.setCommitIndex(2);
+
+ Leader leader = new Leader(leaderActorContext);
+ leader.markFollowerActive(followerActor.path().toString());
+
+ leader.handleMessage(leaderActor, new SendHeartBeat());
+
+ AppendEntriesMessages.AppendEntries appendEntries =
+ (AppendEntriesMessages.AppendEntries) MessageCollectorActor
+ .getFirstMatching(followerActor, AppendEntriesMessages.AppendEntries.class);
+
+ assertNotNull(appendEntries);
+
+ assertEquals(1, appendEntries.getLeaderCommit());
+ assertEquals(1, appendEntries.getLogEntries(0).getIndex());
+ assertEquals(0, appendEntries.getPrevLogIndex());
+
+ AppendEntriesReply appendEntriesReply =
+ (AppendEntriesReply) MessageCollectorActor.getFirstMatching(
+ leaderActor, AppendEntriesReply.class);
+
+ assertNotNull(appendEntriesReply);
+
+ assertEquals(2, appendEntriesReply.getLogLastIndex());
+ assertEquals(1, appendEntriesReply.getLogLastTerm());
+
+ }};
+ }
+
+ @Test
+ public void testHandleAppendEntriesReplyFailure(){
+ new JavaTestKit(getSystem()) {
+ {
+
+ ActorRef leaderActor =
+ getSystem().actorOf(Props.create(MessageCollectorActor.class));
+
+ ActorRef followerActor =
+ getSystem().actorOf(Props.create(MessageCollectorActor.class));
+
+
+ MockRaftActorContext leaderActorContext =
+ new MockRaftActorContext("leader", getSystem(), leaderActor);
+
+ Map<String, String> peerAddresses = new HashMap<>();
+ peerAddresses.put("follower-1",
+ followerActor.path().toString());
+
+ leaderActorContext.setPeerAddresses(peerAddresses);
+
+ Leader leader = new Leader(leaderActorContext);
+
+ AppendEntriesReply reply = new AppendEntriesReply("follower-1", 1, false, 10, 1);
+
+ RaftActorBehavior raftActorBehavior = leader.handleAppendEntriesReply(followerActor, reply);
+
+ assertEquals(RaftState.Leader, raftActorBehavior.state());
+
+ }};
+ }
+
+ @Test
+ public void testHandleAppendEntriesReplySuccess() throws Exception {
+ new JavaTestKit(getSystem()) {
+ {
+
+ ActorRef leaderActor =
+ getSystem().actorOf(Props.create(MessageCollectorActor.class));
+
+ ActorRef followerActor =
+ getSystem().actorOf(Props.create(MessageCollectorActor.class));
+
+
+ MockRaftActorContext leaderActorContext =
+ new MockRaftActorContext("leader", getSystem(), leaderActor);
+
+ leaderActorContext.setReplicatedLog(
+ new MockRaftActorContext.MockReplicatedLogBuilder().createEntries(0, 3, 1).build());
+
+ Map<String, String> peerAddresses = new HashMap<>();
+ peerAddresses.put("follower-1",
+ followerActor.path().toString());
+
+ leaderActorContext.setPeerAddresses(peerAddresses);
+ leaderActorContext.setCommitIndex(1);
+ leaderActorContext.setLastApplied(1);
+ leaderActorContext.getTermInformation().update(1, "leader");
+
+ Leader leader = new Leader(leaderActorContext);
+
+ AppendEntriesReply reply = new AppendEntriesReply("follower-1", 1, true, 2, 1);
+
+ RaftActorBehavior raftActorBehavior = leader.handleAppendEntriesReply(followerActor, reply);
+
+ assertEquals(RaftState.Leader, raftActorBehavior.state());
+
+ assertEquals(2, leaderActorContext.getCommitIndex());
+
+ ApplyLogEntries applyLogEntries =
+ (ApplyLogEntries) MessageCollectorActor.getFirstMatching(leaderActor,
+ ApplyLogEntries.class);
+
+ assertNotNull(applyLogEntries);
+
+ assertEquals(2, leaderActorContext.getLastApplied());
+
+ assertEquals(2, applyLogEntries.getToIndex());
+
+ List<Object> applyStateList = MessageCollectorActor.getAllMatching(leaderActor,
+ ApplyState.class);
+
+ assertEquals(1,applyStateList.size());
+
+ ApplyState applyState = (ApplyState) applyStateList.get(0);
+
+ assertEquals(2, applyState.getReplicatedLogEntry().getIndex());
+
+ }};
+ }
+
+ @Test
+ public void testHandleAppendEntriesReplyUnknownFollower(){
+ new JavaTestKit(getSystem()) {
+ {
+
+ ActorRef leaderActor =
+ getSystem().actorOf(Props.create(MessageCollectorActor.class));
+
+ MockRaftActorContext leaderActorContext =
+ new MockRaftActorContext("leader", getSystem(), leaderActor);
+
+ Leader leader = new Leader(leaderActorContext);
+
+ AppendEntriesReply reply = new AppendEntriesReply("follower-1", 1, false, 10, 1);
+
+ RaftActorBehavior raftActorBehavior = leader.handleAppendEntriesReply(getRef(), reply);
+
+ assertEquals(RaftState.Leader, raftActorBehavior.state());
+
+ }};
+ }
+
+ @Test
+ public void testHandleRequestVoteReply(){
+ new JavaTestKit(getSystem()) {
+ {
+
+ ActorRef leaderActor =
+ getSystem().actorOf(Props.create(MessageCollectorActor.class));
+
+ MockRaftActorContext leaderActorContext =
+ new MockRaftActorContext("leader", getSystem(), leaderActor);
+
+ Leader leader = new Leader(leaderActorContext);
+
+ RaftActorBehavior raftActorBehavior = leader.handleRequestVoteReply(getRef(), new RequestVoteReply(1, true));
+
+ assertEquals(RaftState.Leader, raftActorBehavior.state());
+
+ raftActorBehavior = leader.handleRequestVoteReply(getRef(), new RequestVoteReply(1, false));
+
+ assertEquals(RaftState.Leader, raftActorBehavior.state());
+
+
+ }};
+
+ }
+
class MockLeader extends Leader {
FollowerToSnapshot fts;
super(context);
}
- public void addToFollowerToLog(String followerId, long nextIndex, long matchIndex) {
- FollowerLogInformation followerLogInformation =
- new FollowerLogInformationImpl(followerId,
- new AtomicLong(nextIndex),
- new AtomicLong(matchIndex));
- followerToLog.put(followerId, followerLogInformation);
- }
-
public FollowerToSnapshot getFollowerToSnapshot() {
return fts;
}
}
}
+
+ private class MockConfigParamsImpl extends DefaultConfigParamsImpl {
+
+ private long electionTimeOutIntervalMillis;
+ private int snapshotChunkSize;
+
+ public MockConfigParamsImpl(long electionTimeOutIntervalMillis, int snapshotChunkSize) {
+ super();
+ this.electionTimeOutIntervalMillis = electionTimeOutIntervalMillis;
+ this.snapshotChunkSize = snapshotChunkSize;
+ }
+
+ @Override
+ public FiniteDuration getElectionTimeOutInterval() {
+ return new FiniteDuration(electionTimeOutIntervalMillis, TimeUnit.MILLISECONDS);
+ }
+
+ @Override
+ public int getSnapshotChunkSize() {
+ return snapshotChunkSize;
+ }
+ }
}
Code Review / controller.git / blobdiff