--- /dev/null
+/*
+ * Copyright (c) 2014 Cisco 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 akka.japi.Procedure;
+import akka.persistence.SnapshotSelectionCriteria;
+import com.google.protobuf.ByteString;
+import org.opendaylight.controller.cluster.DataPersistenceProvider;
+import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshot;
+import org.opendaylight.controller.cluster.raft.base.messages.SendInstallSnapshot;
+import org.opendaylight.controller.cluster.raft.behaviors.RaftActorBehavior;
+import org.slf4j.Logger;
+
+public class SnapshotManager implements SnapshotState {
+
+
+ private final SnapshotState IDLE = new Idle();
+ private final SnapshotState CAPTURING = new Capturing();
+ private final SnapshotState PERSISTING = new Persisting();
+ private final SnapshotState CREATING = new Creating();
+
+ private final Logger LOG;
+ private final RaftActorContext context;
+ private final LastAppliedTermInformationReader lastAppliedTermInformationReader =
+ new LastAppliedTermInformationReader();
+ private final ReplicatedToAllTermInformationReader replicatedToAllTermInformationReader =
+ new ReplicatedToAllTermInformationReader();
+
+
+ private SnapshotState currentState = IDLE;
+ private CaptureSnapshot captureSnapshot;
+
+ public SnapshotManager(RaftActorContext context, Logger logger) {
+ this.context = context;
+ this.LOG = logger;
+ }
+
+ @Override
+ public boolean isCapturing() {
+ return currentState.isCapturing();
+ }
+
+ @Override
+ public void captureToInstall(ReplicatedLogEntry lastLogEntry, long replicatedToAllIndex) {
+ currentState.captureToInstall(lastLogEntry, replicatedToAllIndex);
+ }
+
+ @Override
+ public void capture(ReplicatedLogEntry lastLogEntry, long replicatedToAllIndex) {
+ currentState.capture(lastLogEntry, replicatedToAllIndex);
+ }
+
+ @Override
+ public void create(Procedure<Void> callback) {
+ currentState.create(callback);
+ }
+
+ @Override
+ public void persist(DataPersistenceProvider persistenceProvider, byte[] snapshotBytes, RaftActorBehavior currentBehavior) {
+ currentState.persist(persistenceProvider, snapshotBytes, currentBehavior);
+ }
+
+ @Override
+ public void commit(DataPersistenceProvider persistenceProvider, long sequenceNumber) {
+ currentState.commit(persistenceProvider, sequenceNumber);
+ }
+
+ @Override
+ public void rollback() {
+ currentState.rollback();
+ }
+
+ @Override
+ public long trimLog(long desiredTrimIndex) {
+ return currentState.trimLog(desiredTrimIndex);
+ }
+
+ private boolean hasFollowers(){
+ return context.getPeerAddresses().keySet().size() > 0;
+ }
+
+ private String persistenceId(){
+ return context.getId();
+ }
+
+ private class AbstractSnapshotState implements SnapshotState {
+
+ @Override
+ public boolean isCapturing() {
+ return false;
+ }
+
+ @Override
+ public void capture(ReplicatedLogEntry lastLogEntry, long replicatedToAllIndex) {
+ LOG.debug("capture should not be called in state {}", this);
+ }
+
+ @Override
+ public void captureToInstall(ReplicatedLogEntry lastLogEntry, long replicatedToAllIndex) {
+ LOG.debug("captureToInstall should not be called in state {}", this);
+ }
+
+ @Override
+ public void create(Procedure<Void> callback) {
+ LOG.debug("create should not be called in state {}", this);
+ }
+
+ @Override
+ public void persist(DataPersistenceProvider persistenceProvider, byte[] snapshotBytes, RaftActorBehavior currentBehavior) {
+ LOG.debug("persist should not be called in state {}", this);
+ }
+
+ @Override
+ public void commit(DataPersistenceProvider persistenceProvider, long sequenceNumber) {
+ LOG.debug("commit should not be called in state {}", this);
+ }
+
+ @Override
+ public void rollback() {
+ LOG.debug("rollback should not be called in state {}", this);
+ }
+
+ @Override
+ public long trimLog(long desiredTrimIndex) {
+ LOG.debug("trimLog should not be called in state {}", this);
+ return -1;
+ }
+
+ protected long doTrimLog(long desiredTrimIndex){
+ // we would want to keep the lastApplied as its used while capturing snapshots
+ long lastApplied = context.getLastApplied();
+ long tempMin = Math.min(desiredTrimIndex, (lastApplied > -1 ? lastApplied - 1 : -1));
+
+ if (tempMin > -1 && context.getReplicatedLog().isPresent(tempMin)) {
+ LOG.debug("{}: fakeSnapshot purging log to {} for term {}", persistenceId(), tempMin,
+ context.getTermInformation().getCurrentTerm());
+
+ //use the term of the temp-min, since we check for isPresent, entry will not be null
+ ReplicatedLogEntry entry = context.getReplicatedLog().get(tempMin);
+ context.getReplicatedLog().snapshotPreCommit(tempMin, entry.getTerm());
+ context.getReplicatedLog().snapshotCommit();
+ return tempMin;
+ }
+
+ return -1;
+ }
+ }
+
+ private class Idle extends AbstractSnapshotState {
+
+ private void capture(ReplicatedLogEntry lastLogEntry, long replicatedToAllIndex, boolean toInstall) {
+ TermInformationReader lastAppliedTermInfoReader =
+ lastAppliedTermInformationReader.init(context.getReplicatedLog(), context.getLastApplied(),
+ lastLogEntry, hasFollowers());
+
+ long lastAppliedIndex = lastAppliedTermInfoReader.getIndex();
+ long lastAppliedTerm = lastAppliedTermInfoReader.getTerm();
+
+ TermInformationReader replicatedToAllTermInfoReader =
+ replicatedToAllTermInformationReader.init(context.getReplicatedLog(), replicatedToAllIndex);
+
+ long newReplicatedToAllIndex = replicatedToAllTermInfoReader.getIndex();
+ long newReplicatedToAllTerm = replicatedToAllTermInfoReader.getTerm();
+
+ // send a CaptureSnapshot to self to make the expensive operation async.
+ captureSnapshot = new CaptureSnapshot(lastLogEntry.getIndex(),
+ lastLogEntry.getTerm(), lastAppliedIndex, lastAppliedTerm,
+ newReplicatedToAllIndex, newReplicatedToAllTerm, toInstall);
+
+ SnapshotManager.this.currentState = CAPTURING;
+
+ LOG.info("{}: Initiating snapshot capture {}: {}", persistenceId(), toInstall ? "to install" : "",
+ captureSnapshot);
+
+ context.getActor().tell(captureSnapshot, context.getActor());
+ }
+
+ @Override
+ public void capture(ReplicatedLogEntry lastLogEntry, long replicatedToAllIndex) {
+ capture(lastLogEntry, replicatedToAllIndex, false);
+ }
+
+ @Override
+ public void captureToInstall(ReplicatedLogEntry lastLogEntry, long replicatedToAllIndex) {
+ capture(lastLogEntry, replicatedToAllIndex, true);
+ }
+
+ @Override
+ public String toString() {
+ return "Idle";
+ }
+
+ @Override
+ public long trimLog(long desiredTrimIndex) {
+ return doTrimLog(desiredTrimIndex);
+ }
+ }
+
+ private class Capturing extends AbstractSnapshotState {
+
+ @Override
+ public boolean isCapturing() {
+ return true;
+ }
+
+ @Override
+ public void create(Procedure<Void> callback) {
+ try {
+ callback.apply(null);
+ SnapshotManager.this.currentState = CREATING;
+ } catch (Exception e) {
+ LOG.error("Unexpected error occurred", e);
+ }
+ }
+
+ @Override
+ public String toString() {
+ return "Capturing";
+ }
+
+ }
+
+ private class Creating extends AbstractSnapshotState {
+
+ @Override
+ public boolean isCapturing() {
+ return true;
+ }
+
+ @Override
+ public void persist(DataPersistenceProvider persistenceProvider, byte[] snapshotBytes,
+ RaftActorBehavior currentBehavior) {
+ // create a snapshot object from the state provided and save it
+ // when snapshot is saved async, SaveSnapshotSuccess is raised.
+
+ Snapshot sn = Snapshot.create(snapshotBytes,
+ context.getReplicatedLog().getFrom(captureSnapshot.getLastAppliedIndex() + 1),
+ captureSnapshot.getLastIndex(), captureSnapshot.getLastTerm(),
+ captureSnapshot.getLastAppliedIndex(), captureSnapshot.getLastAppliedTerm());
+
+ persistenceProvider.saveSnapshot(sn);
+
+ LOG.info("{}: Persisting of snapshot done:{}", persistenceId(), sn.getLogMessage());
+
+ long dataThreshold = Runtime.getRuntime().totalMemory() *
+ context.getConfigParams().getSnapshotDataThresholdPercentage() / 100;
+ if (context.getReplicatedLog().dataSize() > dataThreshold) {
+ // if memory is less, clear the log based on lastApplied.
+ // this could/should only happen if one of the followers is down
+ // as normally we keep removing from the log when its replicated to all.
+ context.getReplicatedLog().snapshotPreCommit(captureSnapshot.getLastAppliedIndex(),
+ captureSnapshot.getLastAppliedTerm());
+
+ currentBehavior.setReplicatedToAllIndex(captureSnapshot.getReplicatedToAllIndex());
+ } else if(captureSnapshot.getReplicatedToAllIndex() != -1){
+ // clear the log based on replicatedToAllIndex
+ context.getReplicatedLog().snapshotPreCommit(captureSnapshot.getReplicatedToAllIndex(),
+ captureSnapshot.getReplicatedToAllTerm());
+
+ currentBehavior.setReplicatedToAllIndex(captureSnapshot.getReplicatedToAllIndex());
+ } else {
+ // The replicatedToAllIndex was not found in the log
+ // This means that replicatedToAllIndex never moved beyond -1 or that it is already in the snapshot.
+ // In this scenario we may need to save the snapshot to the akka persistence
+ // snapshot for recovery but we do not need to do the replicated log trimming.
+ context.getReplicatedLog().snapshotPreCommit(context.getReplicatedLog().getSnapshotIndex(),
+ context.getReplicatedLog().getSnapshotTerm());
+ }
+
+ LOG.info("{}: Removed in-memory snapshotted entries, adjusted snaphsotIndex:{} " +
+ "and term:{}", persistenceId(), captureSnapshot.getLastAppliedIndex(),
+ captureSnapshot.getLastAppliedTerm());
+
+ if (context.getId().equals(currentBehavior.getLeaderId())
+ && captureSnapshot.isInstallSnapshotInitiated()) {
+ // this would be call straight to the leader and won't initiate in serialization
+ currentBehavior.handleMessage(context.getActor(), new SendInstallSnapshot(
+ ByteString.copyFrom(snapshotBytes)));
+ }
+
+ captureSnapshot = null;
+ SnapshotManager.this.currentState = PERSISTING;
+ }
+
+ @Override
+ public String toString() {
+ return "Creating";
+ }
+
+ }
+
+ private class Persisting extends AbstractSnapshotState {
+
+ @Override
+ public void commit(DataPersistenceProvider persistenceProvider, long sequenceNumber) {
+ context.getReplicatedLog().snapshotCommit();
+ persistenceProvider.deleteSnapshots(new SnapshotSelectionCriteria(
+ sequenceNumber - context.getConfigParams().getSnapshotBatchCount(), 43200000));
+
+ persistenceProvider.deleteMessages(sequenceNumber);
+
+ SnapshotManager.this.currentState = IDLE;
+ }
+
+ @Override
+ public void rollback() {
+ context.getReplicatedLog().snapshotRollback();
+
+ LOG.info("{}: Replicated Log rolled back. Snapshot will be attempted in the next cycle." +
+ "snapshotIndex:{}, snapshotTerm:{}, log-size:{}", persistenceId(),
+ context.getReplicatedLog().getSnapshotIndex(),
+ context.getReplicatedLog().getSnapshotTerm(),
+ context.getReplicatedLog().size());
+
+ SnapshotManager.this.currentState = IDLE;
+ }
+
+ @Override
+ public String toString() {
+ return "Persisting";
+ }
+
+ }
+
+ private static interface TermInformationReader {
+ long getIndex();
+ long getTerm();
+ }
+
+ private static class LastAppliedTermInformationReader implements TermInformationReader{
+ private long index;
+ private long term;
+
+ public LastAppliedTermInformationReader init(ReplicatedLog log, long originalIndex,
+ ReplicatedLogEntry lastLogEntry, boolean hasFollowers){
+ ReplicatedLogEntry entry = log.get(originalIndex);
+ this.index = -1L;
+ this.term = -1L;
+ if (!hasFollowers) {
+ if(lastLogEntry != null) {
+ index = lastLogEntry.getIndex();
+ term = lastLogEntry.getTerm();
+ }
+ } else if (entry != null) {
+ index = entry.getIndex();
+ term = entry.getTerm();
+ } else if(originalIndex == log.getSnapshotIndex()){
+ index = log.getSnapshotIndex();
+ term = log.getSnapshotTerm();
+ }
+ return this;
+ }
+
+ @Override
+ public long getIndex(){
+ return this.index;
+ }
+
+ @Override
+ public long getTerm(){
+ return this.term;
+ }
+ }
+
+ private static class ReplicatedToAllTermInformationReader implements TermInformationReader{
+ private long index;
+ private long term;
+
+ ReplicatedToAllTermInformationReader init(ReplicatedLog log, long originalIndex){
+ ReplicatedLogEntry entry = log.get(originalIndex);
+ this.index = -1L;
+ this.term = -1L;
+
+ if (entry != null) {
+ index = entry.getIndex();
+ term = entry.getTerm();
+ }
+
+ return this;
+ }
+
+ @Override
+ public long getIndex(){
+ return this.index;
+ }
+
+ @Override
+ public long getTerm(){
+ return this.term;
+ }
+ }
+}
--- /dev/null
+package org.opendaylight.controller.cluster.raft;
+
+import static junit.framework.TestCase.assertTrue;
+import static org.junit.Assert.assertEquals;
+import static org.mockito.Matchers.any;
+import static org.mockito.Matchers.anyLong;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+import akka.actor.ActorRef;
+import akka.japi.Procedure;
+import akka.persistence.SnapshotSelectionCriteria;
+import akka.testkit.TestActorRef;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+import org.opendaylight.controller.cluster.DataPersistenceProvider;
+import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshot;
+import org.opendaylight.controller.cluster.raft.base.messages.SendInstallSnapshot;
+import org.opendaylight.controller.cluster.raft.behaviors.RaftActorBehavior;
+import org.opendaylight.controller.cluster.raft.utils.MessageCollectorActor;
+import org.slf4j.LoggerFactory;
+
+public class SnapshotManagerTest extends AbstractActorTest {
+
+ @Mock
+ private RaftActorContext mockRaftActorContext;
+
+ @Mock
+ private ConfigParams mockConfigParams;
+
+ @Mock
+ private ReplicatedLog mockReplicatedLog;
+
+ @Mock
+ private DataPersistenceProvider mockDataPersistenceProvider;
+
+ @Mock
+ private RaftActorBehavior mockRaftActorBehavior;
+
+ @Mock
+ private Procedure<Void> mockProcedure;
+
+ private SnapshotManager snapshotManager;
+
+ private TestActorFactory factory;
+
+ private TestActorRef<MessageCollectorActor> actorRef;
+
+ @Before
+ public void setUp(){
+ MockitoAnnotations.initMocks(this);
+
+ doReturn(new HashMap<>()).when(mockRaftActorContext).getPeerAddresses();
+ doReturn(mockConfigParams).when(mockRaftActorContext).getConfigParams();
+ doReturn(10L).when(mockConfigParams).getSnapshotBatchCount();
+ doReturn(mockReplicatedLog).when(mockRaftActorContext).getReplicatedLog();
+ doReturn("123").when(mockRaftActorContext).getId();
+ doReturn("123").when(mockRaftActorBehavior).getLeaderId();
+
+ snapshotManager = new SnapshotManager(mockRaftActorContext, LoggerFactory.getLogger(this.getClass()));
+ factory = new TestActorFactory(getSystem());
+
+ actorRef = factory.createTestActor(MessageCollectorActor.props(), factory.generateActorId("test-"));
+ doReturn(actorRef).when(mockRaftActorContext).getActor();
+
+ }
+
+ @After
+ public void tearDown(){
+ factory.close();
+ }
+
+ @Test
+ public void testConstruction(){
+ assertEquals(false, snapshotManager.isCapturing());
+ }
+
+ @Test
+ public void testCaptureToInstall(){
+
+ // Force capturing toInstall = true
+ snapshotManager.captureToInstall(new MockRaftActorContext.MockReplicatedLogEntry(1, 0,
+ new MockRaftActorContext.MockPayload()), 0);
+
+ assertEquals(true, snapshotManager.isCapturing());
+
+ CaptureSnapshot captureSnapshot = MessageCollectorActor.expectFirstMatching(actorRef, CaptureSnapshot.class);
+
+ // LastIndex and LastTerm are picked up from the lastLogEntry
+ assertEquals(0L, captureSnapshot.getLastIndex());
+ assertEquals(1L, captureSnapshot.getLastTerm());
+
+ // Since the actor does not have any followers (no peer addresses) lastApplied will be from lastLogEntry
+ assertEquals(0L, captureSnapshot.getLastAppliedIndex());
+ assertEquals(1L, captureSnapshot.getLastAppliedTerm());
+
+ //
+ assertEquals(-1L, captureSnapshot.getReplicatedToAllIndex());
+ assertEquals(-1L, captureSnapshot.getReplicatedToAllTerm());
+ actorRef.underlyingActor().clear();
+ }
+
+ @Test
+ public void testCapture(){
+ snapshotManager.capture(new MockRaftActorContext.MockReplicatedLogEntry(1,9,
+ new MockRaftActorContext.MockPayload()), 9);
+
+ assertEquals(true, snapshotManager.isCapturing());
+
+ CaptureSnapshot captureSnapshot = MessageCollectorActor.expectFirstMatching(actorRef, CaptureSnapshot.class);
+ // LastIndex and LastTerm are picked up from the lastLogEntry
+ assertEquals(9L, captureSnapshot.getLastIndex());
+ assertEquals(1L, captureSnapshot.getLastTerm());
+
+ // Since the actor does not have any followers (no peer addresses) lastApplied will be from lastLogEntry
+ assertEquals(9L, captureSnapshot.getLastAppliedIndex());
+ assertEquals(1L, captureSnapshot.getLastAppliedTerm());
+
+ //
+ assertEquals(-1L, captureSnapshot.getReplicatedToAllIndex());
+ assertEquals(-1L, captureSnapshot.getReplicatedToAllTerm());
+
+ actorRef.underlyingActor().clear();
+
+ }
+
+ @Test
+ public void testIllegalCapture() throws Exception {
+ snapshotManager.capture(new MockRaftActorContext.MockReplicatedLogEntry(1,9,
+ new MockRaftActorContext.MockPayload()), 9);
+
+ List<CaptureSnapshot> allMatching = MessageCollectorActor.getAllMatching(actorRef, CaptureSnapshot.class);
+
+ assertEquals(1, allMatching.size());
+
+ // This will not cause snapshot capture to start again
+ snapshotManager.capture(new MockRaftActorContext.MockReplicatedLogEntry(1,9,
+ new MockRaftActorContext.MockPayload()), 9);
+
+ allMatching = MessageCollectorActor.getAllMatching(actorRef, CaptureSnapshot.class);
+
+ assertEquals(1, allMatching.size());
+ }
+
+ @Test
+ public void testPersistWhenReplicatedToAllIndexMinusOne(){
+ doReturn("123").when(mockRaftActorContext).getId();
+ doReturn(45L).when(mockReplicatedLog).getSnapshotIndex();
+ doReturn(6L).when(mockReplicatedLog).getSnapshotTerm();
+
+ // when replicatedToAllIndex = -1
+ snapshotManager.capture(new MockRaftActorContext.MockReplicatedLogEntry(6,9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ byte[] bytes = new byte[] {1,2,3,4,5,6,7,8,9,10};
+ snapshotManager.persist(mockDataPersistenceProvider, bytes, mockRaftActorBehavior);
+
+ ArgumentCaptor<Snapshot> snapshotArgumentCaptor = ArgumentCaptor.forClass(Snapshot.class);
+ verify(mockDataPersistenceProvider).saveSnapshot(snapshotArgumentCaptor.capture());
+
+ Snapshot snapshot = snapshotArgumentCaptor.getValue();
+
+ assertEquals(6, snapshot.getLastAppliedTerm());
+ assertEquals(9, snapshot.getLastAppliedIndex());
+ assertEquals(9, snapshot.getLastIndex());
+ assertEquals(6, snapshot.getLastTerm());
+ assertEquals(10, snapshot.getState().length);
+ assertTrue(Arrays.equals(bytes, snapshot.getState()));
+ assertEquals(0, snapshot.getUnAppliedEntries().size());
+
+ verify(mockReplicatedLog).snapshotPreCommit(45L, 6L);
+ }
+
+
+ @Test
+ public void testCreate() throws Exception {
+ // when replicatedToAllIndex = -1
+ snapshotManager.capture(new MockRaftActorContext.MockReplicatedLogEntry(6,9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ verify(mockProcedure).apply(null);
+ }
+
+ @Test
+ public void testCallingCreateMultipleTimesCausesNoHarm() throws Exception {
+ // when replicatedToAllIndex = -1
+ snapshotManager.capture(new MockRaftActorContext.MockReplicatedLogEntry(6,9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ snapshotManager.create(mockProcedure);
+
+ verify(mockProcedure, times(1)).apply(null);
+ }
+
+ @Test
+ public void testCallingCreateBeforeCapture() throws Exception {
+ snapshotManager.create(mockProcedure);
+
+ verify(mockProcedure, times(0)).apply(null);
+ }
+
+ @Test
+ public void testCallingCreateAfterPersist() throws Exception {
+ // when replicatedToAllIndex = -1
+ snapshotManager.capture(new MockRaftActorContext.MockReplicatedLogEntry(6,9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ verify(mockProcedure, times(1)).apply(null);
+
+ snapshotManager.persist(mockDataPersistenceProvider, new byte[]{}, mockRaftActorBehavior);
+
+ Mockito.reset(mockProcedure);
+
+ snapshotManager.create(mockProcedure);
+
+ verify(mockProcedure, never()).apply(null);
+ }
+
+ @Test
+ public void testPersistWhenReplicatedToAllIndexNotMinus(){
+ doReturn(45L).when(mockReplicatedLog).getSnapshotIndex();
+ doReturn(6L).when(mockReplicatedLog).getSnapshotTerm();
+ ReplicatedLogEntry replicatedLogEntry = mock(ReplicatedLogEntry.class);
+ doReturn(replicatedLogEntry).when(mockReplicatedLog).get(9);
+ doReturn(6L).when(replicatedLogEntry).getTerm();
+ doReturn(9L).when(replicatedLogEntry).getIndex();
+
+ // when replicatedToAllIndex != -1
+ snapshotManager.capture(new MockRaftActorContext.MockReplicatedLogEntry(6,9,
+ new MockRaftActorContext.MockPayload()), 9);
+
+ snapshotManager.create(mockProcedure);
+
+ snapshotManager.persist(mockDataPersistenceProvider, new byte[]{}, mockRaftActorBehavior);
+
+ verify(mockDataPersistenceProvider).saveSnapshot(any(Snapshot.class));
+
+ verify(mockReplicatedLog).snapshotPreCommit(9L, 6L);
+
+ verify(mockRaftActorBehavior).setReplicatedToAllIndex(9);
+ }
+
+
+ @Test
+ public void testPersistWhenReplicatedLogDataSizeGreaterThanThreshold(){
+ doReturn(Integer.MAX_VALUE).when(mockReplicatedLog).dataSize();
+
+ // when replicatedToAllIndex = -1
+ snapshotManager.capture(new MockRaftActorContext.MockReplicatedLogEntry(6,9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ snapshotManager.persist(mockDataPersistenceProvider, new byte[]{}, mockRaftActorBehavior);
+
+ verify(mockDataPersistenceProvider).saveSnapshot(any(Snapshot.class));
+
+ verify(mockReplicatedLog).snapshotPreCommit(9L, 6L);
+
+ verify(mockRaftActorBehavior).setReplicatedToAllIndex(-1);
+ }
+
+ @Test
+ public void testPersistSendInstallSnapshot(){
+ doReturn(Integer.MAX_VALUE).when(mockReplicatedLog).dataSize();
+
+ // when replicatedToAllIndex = -1
+ snapshotManager.captureToInstall(new MockRaftActorContext.MockReplicatedLogEntry(6, 9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ byte[] bytes = new byte[] {1,2,3,4,5,6,7,8,9,10};
+
+ snapshotManager.persist(mockDataPersistenceProvider, bytes, mockRaftActorBehavior);
+
+ verify(mockDataPersistenceProvider).saveSnapshot(any(Snapshot.class));
+
+ verify(mockReplicatedLog).snapshotPreCommit(9L, 6L);
+
+ ArgumentCaptor<SendInstallSnapshot> sendInstallSnapshotArgumentCaptor
+ = ArgumentCaptor.forClass(SendInstallSnapshot.class);
+
+ verify(mockRaftActorBehavior).handleMessage(any(ActorRef.class), sendInstallSnapshotArgumentCaptor.capture());
+
+ SendInstallSnapshot sendInstallSnapshot = sendInstallSnapshotArgumentCaptor.getValue();
+
+ assertTrue(Arrays.equals(bytes, sendInstallSnapshot.getSnapshot().toByteArray()));
+ }
+
+ @Test
+ public void testCallingPersistWithoutCaptureWillDoNothing(){
+ snapshotManager.persist(mockDataPersistenceProvider, new byte[]{}, mockRaftActorBehavior);
+
+ verify(mockDataPersistenceProvider, never()).saveSnapshot(any(Snapshot.class));
+
+ verify(mockReplicatedLog, never()).snapshotPreCommit(9L, 6L);
+
+ verify(mockRaftActorBehavior, never()).handleMessage(any(ActorRef.class), any(SendInstallSnapshot.class));
+ }
+ @Test
+ public void testCallingPersistTwiceWillDoNoHarm(){
+ doReturn(Integer.MAX_VALUE).when(mockReplicatedLog).dataSize();
+
+ // when replicatedToAllIndex = -1
+ snapshotManager.captureToInstall(new MockRaftActorContext.MockReplicatedLogEntry(6, 9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ snapshotManager.persist(mockDataPersistenceProvider, new byte[]{}, mockRaftActorBehavior);
+
+ snapshotManager.persist(mockDataPersistenceProvider, new byte[]{}, mockRaftActorBehavior);
+
+ verify(mockDataPersistenceProvider).saveSnapshot(any(Snapshot.class));
+
+ verify(mockReplicatedLog).snapshotPreCommit(9L, 6L);
+
+ verify(mockRaftActorBehavior).handleMessage(any(ActorRef.class), any(SendInstallSnapshot.class));
+ }
+
+ @Test
+ public void testCommit(){
+ // when replicatedToAllIndex = -1
+ snapshotManager.captureToInstall(new MockRaftActorContext.MockReplicatedLogEntry(6, 9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ snapshotManager.persist(mockDataPersistenceProvider, new byte[]{}, mockRaftActorBehavior);
+
+ snapshotManager.commit(mockDataPersistenceProvider, 100L);
+
+ verify(mockReplicatedLog).snapshotCommit();
+
+ verify(mockDataPersistenceProvider).deleteMessages(100L);
+
+ ArgumentCaptor<SnapshotSelectionCriteria> criteriaCaptor = ArgumentCaptor.forClass(SnapshotSelectionCriteria.class);
+
+ verify(mockDataPersistenceProvider).deleteSnapshots(criteriaCaptor.capture());
+
+ assertEquals(90, criteriaCaptor.getValue().maxSequenceNr()); // sequenceNumber = 100
+ // config snapShotBatchCount = 10
+ // therefore maxSequenceNumber = 90
+ }
+
+ @Test
+ public void testCommitBeforePersist(){
+ // when replicatedToAllIndex = -1
+ snapshotManager.captureToInstall(new MockRaftActorContext.MockReplicatedLogEntry(6, 9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.commit(mockDataPersistenceProvider, 100L);
+
+ verify(mockReplicatedLog, never()).snapshotCommit();
+
+ verify(mockDataPersistenceProvider, never()).deleteMessages(100L);
+
+ verify(mockDataPersistenceProvider, never()).deleteSnapshots(any(SnapshotSelectionCriteria.class));
+
+ }
+
+ @Test
+ public void testCommitBeforeCapture(){
+ snapshotManager.commit(mockDataPersistenceProvider, 100L);
+
+ verify(mockReplicatedLog, never()).snapshotCommit();
+
+ verify(mockDataPersistenceProvider, never()).deleteMessages(anyLong());
+
+ verify(mockDataPersistenceProvider, never()).deleteSnapshots(any(SnapshotSelectionCriteria.class));
+
+ }
+
+ @Test
+ public void testCallingCommitMultipleTimesCausesNoHarm(){
+ // when replicatedToAllIndex = -1
+ snapshotManager.captureToInstall(new MockRaftActorContext.MockReplicatedLogEntry(6, 9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ snapshotManager.persist(mockDataPersistenceProvider, new byte[]{}, mockRaftActorBehavior);
+
+ snapshotManager.commit(mockDataPersistenceProvider, 100L);
+
+ snapshotManager.commit(mockDataPersistenceProvider, 100L);
+
+ verify(mockReplicatedLog, times(1)).snapshotCommit();
+
+ verify(mockDataPersistenceProvider, times(1)).deleteMessages(100L);
+
+ verify(mockDataPersistenceProvider, times(1)).deleteSnapshots(any(SnapshotSelectionCriteria.class));
+ }
+
+ @Test
+ public void testRollback(){
+ // when replicatedToAllIndex = -1
+ snapshotManager.captureToInstall(new MockRaftActorContext.MockReplicatedLogEntry(6, 9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ snapshotManager.persist(mockDataPersistenceProvider, new byte[]{}, mockRaftActorBehavior);
+
+ snapshotManager.rollback();
+
+ verify(mockReplicatedLog).snapshotRollback();
+ }
+
+
+ @Test
+ public void testRollbackBeforePersist(){
+ // when replicatedToAllIndex = -1
+ snapshotManager.captureToInstall(new MockRaftActorContext.MockReplicatedLogEntry(6, 9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.rollback();
+
+ verify(mockReplicatedLog, never()).snapshotRollback();
+ }
+
+ @Test
+ public void testRollbackBeforeCapture(){
+ snapshotManager.rollback();
+
+ verify(mockReplicatedLog, never()).snapshotRollback();
+ }
+
+ @Test
+ public void testCallingRollbackMultipleTimesCausesNoHarm(){
+ // when replicatedToAllIndex = -1
+ snapshotManager.captureToInstall(new MockRaftActorContext.MockReplicatedLogEntry(6, 9,
+ new MockRaftActorContext.MockPayload()), -1);
+
+ snapshotManager.create(mockProcedure);
+
+ snapshotManager.persist(mockDataPersistenceProvider, new byte[]{}, mockRaftActorBehavior);
+
+ snapshotManager.rollback();
+
+ snapshotManager.rollback();
+
+ verify(mockReplicatedLog, times(1)).snapshotRollback();
+ }
+
+ @Test
+ public void testTrimLog(){
+ ElectionTerm mockElectionTerm = mock(ElectionTerm.class);
+ ReplicatedLogEntry replicatedLogEntry = mock(ReplicatedLogEntry.class);
+ doReturn(20L).when(mockRaftActorContext).getLastApplied();
+ doReturn(true).when(mockReplicatedLog).isPresent(10);
+ doReturn(mockElectionTerm).when(mockRaftActorContext).getTermInformation();
+ doReturn(5L).when(mockElectionTerm).getCurrentTerm();
+ doReturn(replicatedLogEntry).when((mockReplicatedLog)).get(10);
+ doReturn(5L).when(replicatedLogEntry).getTerm();
+
+ snapshotManager.trimLog(10);
+
+ verify(mockReplicatedLog).snapshotPreCommit(10, 5);
+ verify(mockReplicatedLog).snapshotCommit();
+ }
+
+ @Test
+ public void testTrimLogAfterCapture(){
+ snapshotManager.capture(new MockRaftActorContext.MockReplicatedLogEntry(1,9,
+ new MockRaftActorContext.MockPayload()), 9);
+
+ assertEquals(true, snapshotManager.isCapturing());
+
+ ElectionTerm mockElectionTerm = mock(ElectionTerm.class);
+ ReplicatedLogEntry replicatedLogEntry = mock(ReplicatedLogEntry.class);
+ doReturn(20L).when(mockRaftActorContext).getLastApplied();
+ doReturn(true).when(mockReplicatedLog).isPresent(10);
+ doReturn(mockElectionTerm).when(mockRaftActorContext).getTermInformation();
+ doReturn(5L).when(mockElectionTerm).getCurrentTerm();
+ doReturn(replicatedLogEntry).when((mockReplicatedLog)).get(10);
+ doReturn(5L).when(replicatedLogEntry).getTerm();
+
+ snapshotManager.trimLog(10);
+
+ verify(mockReplicatedLog, never()).snapshotPreCommit(anyLong(), anyLong());
+ verify(mockReplicatedLog, never()).snapshotCommit();
+
+ }
+
+ @Test
+ public void testTrimLogAfterCaptureToInstall(){
+ snapshotManager.captureToInstall(new MockRaftActorContext.MockReplicatedLogEntry(1,9,
+ new MockRaftActorContext.MockPayload()), 9);
+
+ assertEquals(true, snapshotManager.isCapturing());
+
+ ElectionTerm mockElectionTerm = mock(ElectionTerm.class);
+ ReplicatedLogEntry replicatedLogEntry = mock(ReplicatedLogEntry.class);
+ doReturn(20L).when(mockRaftActorContext).getLastApplied();
+ doReturn(true).when(mockReplicatedLog).isPresent(10);
+ doReturn(mockElectionTerm).when(mockRaftActorContext).getTermInformation();
+ doReturn(5L).when(mockElectionTerm).getCurrentTerm();
+ doReturn(replicatedLogEntry).when((mockReplicatedLog)).get(10);
+ doReturn(5L).when(replicatedLogEntry).getTerm();
+
+ snapshotManager.trimLog(10);
+
+ verify(mockReplicatedLog, never()).snapshotPreCommit(10, 5);
+ verify(mockReplicatedLog, never()).snapshotCommit();
+
+ }
+
+}
\ No newline at end of file
Code Review / controller.git / commitdiff