package org.opendaylight.controller.cluster.raft;
import akka.actor.ActorRef;
-import akka.japi.Procedure;
import akka.persistence.SaveSnapshotFailure;
import akka.persistence.SaveSnapshotSuccess;
import com.google.common.annotations.VisibleForTesting;
import java.util.Collections;
+import java.util.Optional;
import java.util.concurrent.TimeUnit;
-import org.apache.commons.lang3.SerializationUtils;
import org.opendaylight.controller.cluster.raft.base.messages.ApplySnapshot;
import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshot;
import org.opendaylight.controller.cluster.raft.base.messages.CaptureSnapshotReply;
-import org.opendaylight.controller.cluster.raft.behaviors.RaftActorBehavior;
import org.opendaylight.controller.cluster.raft.client.messages.GetSnapshot;
import org.opendaylight.controller.cluster.raft.client.messages.GetSnapshotReply;
+import org.opendaylight.controller.cluster.raft.persisted.EmptyState;
+import org.opendaylight.controller.cluster.raft.persisted.Snapshot;
import org.slf4j.Logger;
-import scala.concurrent.duration.Duration;
+import scala.concurrent.duration.FiniteDuration;
/**
* Handles snapshot related messages for a RaftActor.
* @author Thomas Pantelis
*/
class RaftActorSnapshotMessageSupport {
- static final String COMMIT_SNAPSHOT = "commit_snapshot";
-
- private final RaftActorContext context;
- private final RaftActorBehavior currentBehavior;
- private final RaftActorSnapshotCohort cohort;
- private final Logger log;
-
- private final Procedure<Void> createSnapshotProcedure = new Procedure<Void>() {
+ static final Object COMMIT_SNAPSHOT = new Object() {
@Override
- public void apply(Void notUsed) {
- cohort.createSnapshot(context.getActor());
+ public String toString() {
+ return "commit_snapshot";
}
};
- private final Procedure<byte[]> applySnapshotProcedure = new Procedure<byte[]>() {
- @Override
- public void apply(byte[] state) {
- cohort.applySnapshot(state);
- }
- };
+ private final RaftActorContext context;
+ private final RaftActorSnapshotCohort cohort;
+ private final Logger log;
- private Duration snapshotReplyActorTimeout = Duration.create(30, TimeUnit.SECONDS);
+ private FiniteDuration snapshotReplyActorTimeout = FiniteDuration.create(30, TimeUnit.SECONDS);
- RaftActorSnapshotMessageSupport(RaftActorContext context, RaftActorBehavior currentBehavior,
- RaftActorSnapshotCohort cohort) {
+ RaftActorSnapshotMessageSupport(final RaftActorContext context, final RaftActorSnapshotCohort cohort) {
this.context = context;
- this.currentBehavior = currentBehavior;
this.cohort = cohort;
this.log = context.getLogger();
- context.getSnapshotManager().setCreateSnapshotCallable(createSnapshotProcedure);
- context.getSnapshotManager().setApplySnapshotProcedure(applySnapshotProcedure);
+ context.getSnapshotManager().setCreateSnapshotConsumer(
+ outputStream -> cohort.createSnapshot(context.getActor(), outputStream));
+ context.getSnapshotManager().setSnapshotCohort(cohort);
+ }
+
+ RaftActorSnapshotCohort getSnapshotCohort() {
+ return cohort;
}
boolean handleSnapshotMessage(Object message, ActorRef sender) {
- if(message instanceof ApplySnapshot ) {
+ if (message instanceof ApplySnapshot) {
onApplySnapshot((ApplySnapshot) message);
- return true;
} else if (message instanceof SaveSnapshotSuccess) {
onSaveSnapshotSuccess((SaveSnapshotSuccess) message);
- return true;
} else if (message instanceof SaveSnapshotFailure) {
onSaveSnapshotFailure((SaveSnapshotFailure) message);
- return true;
} else if (message instanceof CaptureSnapshotReply) {
- onCaptureSnapshotReply(((CaptureSnapshotReply) message).getSnapshot());
- return true;
- } else if (message.equals(COMMIT_SNAPSHOT)) {
- context.getSnapshotManager().commit(-1, currentBehavior);
- return true;
+ onCaptureSnapshotReply((CaptureSnapshotReply) message);
+ } else if (COMMIT_SNAPSHOT.equals(message)) {
+ context.getSnapshotManager().commit(-1, -1);
} else if (message instanceof GetSnapshot) {
onGetSnapshot(sender);
- return true;
} else {
return false;
}
+
+ return true;
}
- private void onCaptureSnapshotReply(byte[] snapshotBytes) {
- log.debug("{}: CaptureSnapshotReply received by actor: snapshot size {}", context.getId(), snapshotBytes.length);
+ private void onCaptureSnapshotReply(CaptureSnapshotReply reply) {
+ log.debug("{}: CaptureSnapshotReply received by actor", context.getId());
- context.getSnapshotManager().persist(snapshotBytes, currentBehavior, context.getTotalMemory());
+ context.getSnapshotManager().persist(reply.getSnapshotState(), reply.getInstallSnapshotStream(),
+ context.getTotalMemory());
}
private void onSaveSnapshotFailure(SaveSnapshotFailure saveSnapshotFailure) {
}
private void onSaveSnapshotSuccess(SaveSnapshotSuccess success) {
- log.info("{}: SaveSnapshotSuccess received for snapshot", context.getId());
-
long sequenceNumber = success.metadata().sequenceNr();
- context.getSnapshotManager().commit(sequenceNumber, currentBehavior);
+ log.info("{}: SaveSnapshotSuccess received for snapshot, sequenceNr: {}", context.getId(), sequenceNumber);
+
+ context.getSnapshotManager().commit(sequenceNumber, success.metadata().timestamp());
}
private void onApplySnapshot(ApplySnapshot message) {
- log.info("{}: Applying snapshot on follower with snapshotIndex: {}, snapshotTerm: {}", context.getId(),
- message.getSnapshot().getLastAppliedIndex(), message.getSnapshot().getLastAppliedTerm());
+ log.info("{}: Applying snapshot on follower: {}", context.getId(), message.getSnapshot());
context.getSnapshotManager().apply(message);
}
private void onGetSnapshot(ActorRef sender) {
log.debug("{}: onGetSnapshot", context.getId());
- if(context.getPersistenceProvider().isRecoveryApplicable()) {
+ if (context.getPersistenceProvider().isRecoveryApplicable()) {
CaptureSnapshot captureSnapshot = context.getSnapshotManager().newCaptureSnapshot(
- context.getReplicatedLog().last(), -1, false);
+ context.getReplicatedLog().last(), -1);
ActorRef snapshotReplyActor = context.actorOf(GetSnapshotReplyActor.props(captureSnapshot,
ImmutableElectionTerm.copyOf(context.getTermInformation()), sender,
snapshotReplyActorTimeout, context.getId(), context.getPeerServerInfo(true)));
- cohort.createSnapshot(snapshotReplyActor);
+ cohort.createSnapshot(snapshotReplyActor, Optional.empty());
} else {
- Snapshot snapshot = Snapshot.create(new byte[0], Collections.<ReplicatedLogEntry>emptyList(), -1, -1, -1, -1,
+ Snapshot snapshot = Snapshot.create(
+ EmptyState.INSTANCE, Collections.<ReplicatedLogEntry>emptyList(),
+ -1, -1, -1, -1,
context.getTermInformation().getCurrentTerm(), context.getTermInformation().getVotedFor(),
context.getPeerServerInfo(true));
- sender.tell(new GetSnapshotReply(context.getId(), SerializationUtils.serialize(snapshot)),
- context.getActor());
+ sender.tell(new GetSnapshotReply(context.getId(), snapshot), context.getActor());
}
}
@VisibleForTesting
- void setSnapshotReplyActorTimeout(Duration snapshotReplyActorTimeout) {
+ void setSnapshotReplyActorTimeout(FiniteDuration snapshotReplyActorTimeout) {
this.snapshotReplyActorTimeout = snapshotReplyActorTimeout;
}
}