/*
- * Copyright (c) 2015 Brocade Communications Systems, Inc. and others. All rights reserved.
+ * Copyright (c) 2015, 2017 Brocade Communications 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,
import akka.actor.ActorContext;
import akka.actor.ActorRef;
import com.google.common.base.Preconditions;
+import com.google.common.io.ByteSource;
import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.OutputStream;
import java.util.Optional;
import org.opendaylight.controller.cluster.access.concepts.ClientIdentifier;
import org.opendaylight.controller.cluster.access.concepts.FrontendIdentifier;
import org.opendaylight.controller.cluster.access.concepts.FrontendType;
import org.opendaylight.controller.cluster.access.concepts.LocalHistoryIdentifier;
import org.opendaylight.controller.cluster.access.concepts.MemberName;
-import org.opendaylight.controller.cluster.access.concepts.TransactionIdentifier;
import org.opendaylight.controller.cluster.datastore.actors.ShardSnapshotActor;
import org.opendaylight.controller.cluster.datastore.persisted.ShardDataTreeSnapshot;
+import org.opendaylight.controller.cluster.datastore.persisted.ShardSnapshotState;
import org.opendaylight.controller.cluster.raft.RaftActorSnapshotCohort;
-import org.opendaylight.yangtools.yang.data.api.YangInstanceIdentifier;
-import org.opendaylight.yangtools.yang.data.api.schema.NormalizedNode;
+import org.opendaylight.controller.cluster.raft.persisted.Snapshot;
+import org.opendaylight.controller.cluster.raft.persisted.Snapshot.State;
import org.slf4j.Logger;
/**
class ShardSnapshotCohort implements RaftActorSnapshotCohort {
private static final FrontendType SNAPSHOT_APPLY = FrontendType.forName("snapshot-apply");
- private final LocalHistoryIdentifier applyHistoryId;
private final ActorRef snapshotActor;
private final ShardDataTree store;
private final String logId;
private final Logger log;
- private long applyCounter;
-
private ShardSnapshotCohort(final LocalHistoryIdentifier applyHistoryId, final ActorRef snapshotActor,
final ShardDataTree store, final Logger log, final String logId) {
- this.applyHistoryId = Preconditions.checkNotNull(applyHistoryId);
this.snapshotActor = Preconditions.checkNotNull(snapshotActor);
this.store = Preconditions.checkNotNull(store);
this.log = log;
}
@Override
- public void createSnapshot(final ActorRef actorRef) {
+ public void createSnapshot(final ActorRef actorRef, final Optional<OutputStream> installSnapshotStream) {
// Forward the request to the snapshot actor
- ShardSnapshotActor.requestSnapshot(snapshotActor, store.takeRecoverySnapshot(), actorRef);
+ final ShardDataTreeSnapshot snapshot = store.takeStateSnapshot();
+ log.debug("{}: requesting serialization of snapshot {}", logId, snapshot);
+
+ ShardSnapshotActor.requestSnapshot(snapshotActor, snapshot, installSnapshotStream, actorRef);
}
- private void deserializeAndApplySnapshot(final byte[] snapshotBytes) {
- final ShardDataTreeSnapshot snapshot;
- try {
- snapshot = ShardDataTreeSnapshot.deserialize(snapshotBytes);
- } catch (IOException e) {
- log.error("{}: Failed to deserialize snapshot", logId, e);
- return;
+ @Override
+ @SuppressWarnings("checkstyle:IllegalCatch")
+ public void applySnapshot(final Snapshot.State snapshotState) {
+ if (!(snapshotState instanceof ShardSnapshotState)) {
+ log.debug("{}: applySnapshot ignoring snapshot: {}", snapshotState);
}
- try {
- final ReadWriteShardDataTreeTransaction transaction = store.newReadWriteTransaction(
- new TransactionIdentifier(applyHistoryId, applyCounter++));
+ final ShardDataTreeSnapshot snapshot = ((ShardSnapshotState)snapshotState).getSnapshot();
- // delete everything first
- transaction.getSnapshot().delete(YangInstanceIdentifier.EMPTY);
+ // Since this will be done only on Recovery or when this actor is a Follower
+ // we can safely commit everything in here. We not need to worry about event notifications
+ // as they would have already been disabled on the follower
- final Optional<NormalizedNode<?, ?>> maybeNode = snapshot.getRootNode();
- if (maybeNode.isPresent()) {
- // Add everything from the remote node back
- transaction.getSnapshot().write(YangInstanceIdentifier.EMPTY, maybeNode.get());
- }
+ log.info("{}: Applying snapshot", logId);
- store.applyRecoveryTransaction(transaction);
+ try {
+ store.applySnapshot(snapshot);
} catch (Exception e) {
- log.error("{}: An exception occurred when applying snapshot", logId, e);
+ log.error("{}: Failed to apply snapshot {}", logId, snapshot, e);
+ return;
}
+ log.info("{}: Done applying snapshot", logId);
}
@Override
- public void applySnapshot(final byte[] snapshotBytes) {
- // Since this will be done only on Recovery or when this actor is a Follower
- // we can safely commit everything in here. We not need to worry about event notifications
- // as they would have already been disabled on the follower
-
- log.info("{}: Applying snapshot", logId);
- deserializeAndApplySnapshot(snapshotBytes);
- log.info("{}: Done applying snapshot", logId);
+ public State deserializeSnapshot(final ByteSource snapshotBytes) throws IOException {
+ try (ObjectInputStream in = new ObjectInputStream(snapshotBytes.openStream())) {
+ return new ShardSnapshotState(ShardDataTreeSnapshot.deserialize(in));
+ }
}
}