/// <summary>
/// Saves subject runtime state.
/// </summary>
/// <param name="entity">The entity to save.</param>
/// <param name="stream">The stream to save to.</param>
protected virtual void SaveSubjectState(SubjectEntity entity, Stream stream)
{
Debug.Assert(entity != null, "Entity should not be null.");
Debug.Assert(stream != null, "Stream should not be null.");
var policy = _engine.Parent._serializationPolicy;
using (entity.Measure(EntityMetric.SaveState))
{
using var operatorStateWriter = new OperatorStateWriterFactory(stream, policy);
operatorStateWriter.WriteHeader();
if (entity.Instance is IStatefulOperator op)
{
operatorStateWriter.SaveState(op);
}
}
}
/// <summary>
/// Saves subscription runtime state.
/// </summary>
/// <param name="entity">The entity to save.</param>
/// <param name="stream">The stream to save to.</param>
protected virtual void SaveSubscriptionState(SubscriptionEntity entity, Stream stream)
{
Debug.Assert(entity != null, "Entity should not be null.");
Debug.Assert(stream != null, "Stream should not be null.");
var instance = entity.Instance;
if (instance != null)
{
var policy = _engine.Parent._serializationPolicy;
using (entity.Measure(EntityMetric.SaveState))
{
using var operatorStateWriter = new OperatorStateWriterFactory(stream, policy);
operatorStateWriter.WriteHeader();
SubscriptionStateVisitor.SaveState(instance, operatorStateWriter);
}
}
}