*/
package org.opendaylight.controller.cluster.raft;
-import akka.japi.Procedure;
+import akka.actor.ActorRef;
import akka.persistence.SaveSnapshotFailure;
import akka.persistence.SaveSnapshotSuccess;
+import akka.util.Timeout;
+import com.google.common.annotations.VisibleForTesting;
+import java.util.Collections;
+import java.util.Optional;
+import java.util.concurrent.TimeUnit;
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.base.messages.SnapshotComplete;
+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.FiniteDuration;
/**
* Handles snapshot related messages for a RaftActor.
* @author Thomas Pantelis
*/
class RaftActorSnapshotMessageSupport {
- static final String COMMIT_SNAPSHOT = "commit_snapshot";
+ static final Object COMMIT_SNAPSHOT = new Object() {
+ @Override
+ public String toString() {
+ return "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>() {
- @Override
- public void apply(Void notUsed) throws Exception {
- cohort.createSnapshot(context.getActor());
- }
- };
+ 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();
+ log = context.getLogger();
- context.getSnapshotManager().setCreateSnapshotCallable(createSnapshotProcedure);
+ context.getSnapshotManager().setCreateSnapshotConsumer(
+ outputStream -> cohort.createSnapshot(context.getActor(), outputStream));
+ context.getSnapshotManager().setSnapshotCohort(cohort);
}
- boolean handleSnapshotMessage(Object message) {
- if(message instanceof ApplySnapshot ) {
- onApplySnapshot(((ApplySnapshot) message).getSnapshot());
- return true;
+ RaftActorSnapshotCohort getSnapshotCohort() {
+ return cohort;
+ }
+
+ boolean handleSnapshotMessage(final Object message, final ActorRef sender) {
+ if (message instanceof ApplySnapshot) {
+ onApplySnapshot((ApplySnapshot) message);
} 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);
- return true;
+ onCaptureSnapshotReply((CaptureSnapshotReply) message);
+ } else if (COMMIT_SNAPSHOT.equals(message)) {
+ context.getSnapshotManager().commit(-1, -1);
+ } else if (message instanceof GetSnapshot) {
+ onGetSnapshot(sender, (GetSnapshot) message);
+ } else if (message instanceof SnapshotComplete) {
+ log.debug("{}: SnapshotComplete received", context.getId());
} 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(final 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 onSaveSnapshotFailure(final SaveSnapshotFailure saveSnapshotFailure) {
log.error("{}: SaveSnapshotFailure received for snapshot Cause:",
context.getId(), saveSnapshotFailure.cause());
context.getSnapshotManager().rollback();
}
- private void onSaveSnapshotSuccess(SaveSnapshotSuccess success) {
- log.info("{}: SaveSnapshotSuccess received for snapshot", context.getId());
-
+ private void onSaveSnapshotSuccess(final SaveSnapshotSuccess success) {
long sequenceNumber = success.metadata().sequenceNr();
- context.getSnapshotManager().commit(sequenceNumber);
+ log.info("{}: SaveSnapshotSuccess received for snapshot, sequenceNr: {}", context.getId(), sequenceNumber);
+
+ context.getSnapshotManager().commit(sequenceNumber, success.metadata().timestamp());
}
- private void onApplySnapshot(Snapshot snapshot) {
- if(log.isDebugEnabled()) {
- log.debug("{}: ApplySnapshot called on Follower Actor " +
- "snapshotIndex:{}, snapshotTerm:{}", context.getId(), snapshot.getLastAppliedIndex(),
- snapshot.getLastAppliedTerm());
- }
+ private void onApplySnapshot(final ApplySnapshot message) {
+ log.info("{}: Applying snapshot on follower: {}", context.getId(), message.getSnapshot());
- cohort.applySnapshot(snapshot.getState());
+ context.getSnapshotManager().apply(message);
+ }
+
+ private void onGetSnapshot(final ActorRef sender, final GetSnapshot getSnapshot) {
+ log.debug("{}: onGetSnapshot", context.getId());
+
+
+ if (context.getPersistenceProvider().isRecoveryApplicable()) {
+ CaptureSnapshot captureSnapshot = context.getSnapshotManager().newCaptureSnapshot(
+ context.getReplicatedLog().last(), -1, true);
+
+ final FiniteDuration timeout =
+ getSnapshot.getTimeout().map(Timeout::duration).orElse(snapshotReplyActorTimeout);
+
+ ActorRef snapshotReplyActor = context.actorOf(GetSnapshotReplyActor.props(captureSnapshot,
+ ImmutableElectionTerm.copyOf(context.getTermInformation()), sender, timeout, context.getId(),
+ context.getPeerServerInfo(true)));
+
+ cohort.createSnapshot(snapshotReplyActor, Optional.empty());
+ } else {
+ 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(), snapshot), context.getActor());
+ }
+ }
- //clears the followers log, sets the snapshot index to ensure adjusted-index works
- context.setReplicatedLog(ReplicatedLogImpl.newInstance(snapshot, context, currentBehavior));
- context.setLastApplied(snapshot.getLastAppliedIndex());
+ @VisibleForTesting
+ void setSnapshotReplyActorTimeout(final FiniteDuration snapshotReplyActorTimeout) {
+ this.snapshotReplyActorTimeout = snapshotReplyActorTimeout;
}
}
Code Review / controller.git / blobdiff