import akka.japi.Procedure;
import akka.persistence.SnapshotSelectionCriteria;
+import com.google.common.annotations.VisibleForTesting;
import com.google.protobuf.ByteString;
-import org.opendaylight.controller.cluster.DataPersistenceProvider;
+import java.util.List;
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;
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 SnapshotState currentState = IDLE;
private CaptureSnapshot captureSnapshot;
+ private long lastSequenceNumber = -1;
+
+ private Procedure<Void> createSnapshotProcedure;
public SnapshotManager(RaftActorContext context, Logger logger) {
this.context = context;
}
@Override
- public void create(Procedure<Void> callback) {
- currentState.create(callback);
- }
-
- @Override
- public void persist(DataPersistenceProvider persistenceProvider, byte[] snapshotBytes,
- RaftActorBehavior currentBehavior, long totalMemory) {
- currentState.persist(persistenceProvider, snapshotBytes, currentBehavior, totalMemory);
+ public void persist(byte[] snapshotBytes, RaftActorBehavior currentBehavior, long totalMemory) {
+ currentState.persist(snapshotBytes, currentBehavior, totalMemory);
}
@Override
- public void commit(DataPersistenceProvider persistenceProvider, long sequenceNumber) {
- currentState.commit(persistenceProvider, sequenceNumber);
+ public void commit(long sequenceNumber) {
+ currentState.commit(sequenceNumber);
}
@Override
return currentState.trimLog(desiredTrimIndex, currentBehavior);
}
+ public void setCreateSnapshotCallable(Procedure<Void> createSnapshotProcedure) {
+ this.createSnapshotProcedure = createSnapshotProcedure;
+ }
+
+ @VisibleForTesting
+ public CaptureSnapshot getCaptureSnapshot() {
+ return captureSnapshot;
+ }
+
private boolean hasFollowers(){
return context.getPeerAddresses().keySet().size() > 0;
}
}
@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, long totalMemory) {
+ public void persist(byte[] snapshotBytes, RaftActorBehavior currentBehavior, long totalMemory) {
LOG.debug("persist should not be called in state {}", this);
}
@Override
- public void commit(DataPersistenceProvider persistenceProvider, long sequenceNumber) {
+ public void commit(long sequenceNumber) {
LOG.debug("commit should not be called in state {}", this);
}
long newReplicatedToAllTerm = replicatedToAllTermInfoReader.getTerm();
// send a CaptureSnapshot to self to make the expensive operation async.
+
+ List<ReplicatedLogEntry> unAppliedEntries = context.getReplicatedLog().getFrom(lastAppliedIndex + 1);
+
captureSnapshot = new CaptureSnapshot(lastLogEntry.getIndex(),
lastLogEntry.getTerm(), lastAppliedIndex, lastAppliedTerm,
- newReplicatedToAllIndex, newReplicatedToAllTerm, targetFollower!=null);
+ newReplicatedToAllIndex, newReplicatedToAllTerm, unAppliedEntries, targetFollower != null);
- SnapshotManager.this.currentState = CAPTURING;
-
- if(targetFollower != null){
- LOG.info("{}: Initiating snapshot capture {}", persistenceId(), captureSnapshot);
- } else {
+ if(captureSnapshot.isInstallSnapshotInitiated()) {
LOG.info("{}: Initiating snapshot capture {} to install on {}",
persistenceId(), captureSnapshot, targetFollower);
+ } else {
+ LOG.info("{}: Initiating snapshot capture {}", persistenceId(), captureSnapshot);
}
- context.getActor().tell(captureSnapshot, context.getActor());
+ lastSequenceNumber = context.getPersistenceProvider().getLastSequenceNumber();
+
+ LOG.debug("lastSequenceNumber prior to capture: {}", lastSequenceNumber);
+
+ try {
+ createSnapshotProcedure.apply(null);
+ } catch (Exception e) {
+ LOG.error("Error creating snapshot", e);
+ return false;
+ }
+ SnapshotManager.this.currentState = CREATING;
return true;
}
}
}
- 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
}
@Override
- public void persist(DataPersistenceProvider persistenceProvider, byte[] snapshotBytes,
- RaftActorBehavior currentBehavior, long totalMemory) {
+ public void persist(byte[] snapshotBytes, RaftActorBehavior currentBehavior, long totalMemory) {
// 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.getUnAppliedEntries(),
captureSnapshot.getLastIndex(), captureSnapshot.getLastTerm(),
captureSnapshot.getLastAppliedIndex(), captureSnapshot.getLastAppliedTerm());
- persistenceProvider.saveSnapshot(sn);
+ context.getPersistenceProvider().saveSnapshot(sn);
LOG.info("{}: Persisting of snapshot done:{}", persistenceId(), sn.getLogMessage());
private class Persisting extends AbstractSnapshotState {
@Override
- public void commit(DataPersistenceProvider persistenceProvider, long sequenceNumber) {
+ public void commit(long sequenceNumber) {
context.getReplicatedLog().snapshotCommit();
- persistenceProvider.deleteSnapshots(new SnapshotSelectionCriteria(
+ context.getPersistenceProvider().deleteSnapshots(new SnapshotSelectionCriteria(
sequenceNumber - context.getConfigParams().getSnapshotBatchCount(), 43200000));
- persistenceProvider.deleteMessages(sequenceNumber);
+ context.getPersistenceProvider().deleteMessages(lastSequenceNumber);
+ lastSequenceNumber = -1;
SnapshotManager.this.currentState = IDLE;
}
long getTerm();
}
- private static class LastAppliedTermInformationReader implements TermInformationReader{
+ static class LastAppliedTermInformationReader implements TermInformationReader{
private long index;
private long term;