Examples with EmptyState org.opendaylight.controller.cluster.raft.persisted.EmptyState used on opensource projects

Example 1 with EmptyState

use of org.opendaylight.controller.cluster.raft.persisted.EmptyState in project controller by opendaylight.

the class RaftActorRecoverySupport method onRecoveredSnapshot.

private void onRecoveredSnapshot(SnapshotOffer offer) {
    log.debug("{}: SnapshotOffer called.", context.getId());
    initRecoveryTimer();
    Snapshot snapshot = (Snapshot) offer.snapshot();
    for (ReplicatedLogEntry entry : snapshot.getUnAppliedEntries()) {
        if (isMigratedPayload(entry)) {
            hasMigratedDataRecovered = true;
        }
    }
    if (!context.getPersistenceProvider().isRecoveryApplicable()) {
        // We may have just transitioned to disabled and have a snapshot containing state data and/or log
        // entries - we don't want to preserve these, only the server config and election term info.
        snapshot = Snapshot.create(EmptyState.INSTANCE, Collections.emptyList(), -1, -1, -1, -1, snapshot.getElectionTerm(), snapshot.getElectionVotedFor(), snapshot.getServerConfiguration());
    }
    // Create a replicated log with the snapshot information
    // The replicated log can be used later on to retrieve this snapshot
    // when we need to install it on a peer
    context.setReplicatedLog(ReplicatedLogImpl.newInstance(snapshot, context));
    context.setLastApplied(snapshot.getLastAppliedIndex());
    context.setCommitIndex(snapshot.getLastAppliedIndex());
    context.getTermInformation().update(snapshot.getElectionTerm(), snapshot.getElectionVotedFor());
    Stopwatch timer = Stopwatch.createStarted();
    // Apply the snapshot to the actors state
    if (!(snapshot.getState() instanceof EmptyState)) {
        cohort.applyRecoverySnapshot(snapshot.getState());
    }
    if (snapshot.getServerConfiguration() != null) {
        context.updatePeerIds(snapshot.getServerConfiguration());
    }
    timer.stop();
    log.info("Recovery snapshot applied for {} in {}: snapshotIndex={}, snapshotTerm={}, journal-size={}", context.getId(), timer.toString(), replicatedLog().getSnapshotIndex(), replicatedLog().getSnapshotTerm(), replicatedLog().size());
}