package org.opendaylight.controller.cluster.raft;
import akka.actor.ActorRef;
-import akka.japi.Procedure;
import akka.persistence.SaveSnapshotFailure;
import akka.persistence.SaveSnapshotSuccess;
-import org.opendaylight.controller.cluster.DataPersistenceProvider;
+import com.google.common.annotations.VisibleForTesting;
+import java.util.Collections;
+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.slf4j.Logger;
+import scala.concurrent.duration.Duration;
/**
* 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 DataPersistenceProvider persistence;
private final RaftActorContext context;
- private final RaftActorBehavior currentBehavior;
private final RaftActorSnapshotCohort cohort;
- private final ActorRef raftActorRef;
private final Logger log;
- private final Procedure<Void> createSnapshotProcedure = new Procedure<Void>() {
- @Override
- public void apply(Void notUsed) throws Exception {
- cohort.createSnapshot(raftActorRef);
- }
- };
+ private Duration snapshotReplyActorTimeout = Duration.create(30, TimeUnit.SECONDS);
- RaftActorSnapshotMessageSupport(DataPersistenceProvider persistence, RaftActorContext context,
- RaftActorBehavior currentBehavior, RaftActorSnapshotCohort cohort, ActorRef raftActorRef) {
- this.persistence = persistence;
+ RaftActorSnapshotMessageSupport(final RaftActorContext context, final RaftActorSnapshotCohort cohort) {
this.context = context;
- this.currentBehavior = currentBehavior;
this.cohort = cohort;
- this.raftActorRef = raftActorRef;
this.log = context.getLogger();
+
+ context.getSnapshotManager().setCreateSnapshotRunnable(() -> cohort.createSnapshot(context.getActor()));
+ context.getSnapshotManager().setApplySnapshotConsumer(cohort::applySnapshot);
}
- boolean handleSnapshotMessage(Object message) {
- if(message instanceof ApplySnapshot ) {
- onApplySnapshot(((ApplySnapshot) message).getSnapshot());
- return true;
+ boolean handleSnapshotMessage(Object message, 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 CaptureSnapshot) {
- onCaptureSnapshot(message);
- return true;
} else if (message instanceof CaptureSnapshotReply) {
onCaptureSnapshotReply(((CaptureSnapshotReply) message).getSnapshot());
- return true;
- } else if (message.equals(COMMIT_SNAPSHOT)) {
- context.getSnapshotManager().commit(persistence, -1);
- return true;
+ } else if (COMMIT_SNAPSHOT.equals(message)) {
+ context.getSnapshotManager().commit(-1);
+ } else if (message instanceof GetSnapshot) {
+ onGetSnapshot(sender);
} else {
return false;
}
+
+ return true;
}
private void onCaptureSnapshotReply(byte[] snapshotBytes) {
log.debug("{}: CaptureSnapshotReply received by actor: snapshot size {}", context.getId(), snapshotBytes.length);
- context.getSnapshotManager().persist(persistence, snapshotBytes, currentBehavior, context.getTotalMemory());
- }
-
- private void onCaptureSnapshot(Object message) {
- log.debug("{}: CaptureSnapshot received by actor: {}", context.getId(), message);
-
- context.getSnapshotManager().create(createSnapshotProcedure);
+ context.getSnapshotManager().persist(snapshotBytes, context.getTotalMemory());
}
private void onSaveSnapshotFailure(SaveSnapshotFailure saveSnapshotFailure) {
long sequenceNumber = success.metadata().sequenceNr();
- context.getSnapshotManager().commit(persistence, sequenceNumber);
+ context.getSnapshotManager().commit(sequenceNumber);
}
- 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(ApplySnapshot message) {
+ log.info("{}: Applying snapshot on follower with snapshotIndex: {}, snapshotTerm: {}", context.getId(),
+ message.getSnapshot().getLastAppliedIndex(), message.getSnapshot().getLastAppliedTerm());
+
+ context.getSnapshotManager().apply(message);
+ }
+
+ private void onGetSnapshot(ActorRef sender) {
+ log.debug("{}: onGetSnapshot", context.getId());
+
+ if(context.getPersistenceProvider().isRecoveryApplicable()) {
+ CaptureSnapshot captureSnapshot = context.getSnapshotManager().newCaptureSnapshot(
+ context.getReplicatedLog().last(), -1, false);
- cohort.applySnapshot(snapshot.getState());
+ ActorRef snapshotReplyActor = context.actorOf(GetSnapshotReplyActor.props(captureSnapshot,
+ ImmutableElectionTerm.copyOf(context.getTermInformation()), sender,
+ snapshotReplyActorTimeout, context.getId(), context.getPeerServerInfo(true)));
+
+ cohort.createSnapshot(snapshotReplyActor);
+ } else {
+ Snapshot snapshot = Snapshot.create(new byte[0], 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());
+ }
+ }
- //clears the followers log, sets the snapshot index to ensure adjusted-index works
- context.setReplicatedLog(ReplicatedLogImpl.newInstance(snapshot, context, persistence,
- currentBehavior));
- context.setLastApplied(snapshot.getLastAppliedIndex());
+ @VisibleForTesting
+ void setSnapshotReplyActorTimeout(Duration snapshotReplyActorTimeout) {
+ this.snapshotReplyActorTimeout = snapshotReplyActorTimeout;
}
}
Code Review / controller.git / blobdiff