public Source <EventEnvelope, NotUsed> CurrentEventsByPersistenceId(
string persistenceId,
long fromSequenceNr,
long toSequenceNr)
{
return(Source.ActorPublisher <EventEnvelope>(EventsByPersistenceIdPublisher.Props(
persistenceId,
fromSequenceNr,
toSequenceNr,
null,
_maxBufferSize,
_writeJournalPluginId))
.MapMaterializedValue(_ => NotUsed.Instance)
.Named("CurrentEventsByPersistenceId-" + persistenceId));
}
/// <summary>
/// <see cref="EventsByPersistenceId"/> is used for retrieving events for a specific
/// <see cref="PersistentActor"/> identified by <see cref="Eventsourced.PersistenceId"/>.
/// <para>
/// You can retrieve a subset of all events by specifying <paramref name="fromSequenceNr"/> and <paramref name="toSequenceNr"/>
/// or use `0L` and <see cref="long.MaxValue"/> respectively to retrieve all events. Note that
/// the corresponding sequence number of each event is provided in the
/// <see cref="EventEnvelope"/>, which makes it possible to resume the
/// stream at a later point from a given sequence number.
/// </para>
/// The returned event stream is ordered by sequence number, i.e. the same order as the
/// <see cref="PersistentActor"/> persisted the events. The same prefix of stream elements (in same order)
/// are returned for multiple executions of the query, except for when events have been deleted.
/// <para>
/// The stream is not completed when it reaches the end of the currently stored events,
/// but it continues to push new events when new events are persisted.
/// Corresponding query that is completed when it reaches the end of the currently
/// stored events is provided by <see cref="CurrentEventsByPersistenceId"/>.
/// </para>
/// The SQLite write journal is notifying the query side as soon as events are persisted, but for
/// efficiency reasons the query side retrieves the events in batches that sometimes can
/// be delayed up to the configured `refresh-interval`.
/// <para></para>
/// The stream is completed with failure if there is a failure in executing the query in the
/// backend journal.
/// </summary>
public Source <EventEnvelope, NotUsed> EventsByPersistenceId(string persistenceId, long fromSequenceNr, long toSequenceNr) =>
Source.ActorPublisher <EventEnvelope>(EventsByPersistenceIdPublisher.Props(persistenceId, fromSequenceNr, toSequenceNr, _refreshInterval, _maxBufferSize, _writeJournalPluginId))
.MapMaterializedValue(_ => NotUsed.Instance)
.Named("EventsByPersistenceId-" + persistenceId) as Source <EventEnvelope, NotUsed>;
