async Task <StreamFetcher <MongoDB.Events.Event> > CreateStreamFetcherForEventLog(ScopeId scopeId, CancellationToken cancellationToken) =>
new StreamFetcher <MongoDB.Events.Event>(
await _streams.GetEventLog(scopeId, cancellationToken).ConfigureAwait(false),
Builders <MongoDB.Events.Event> .Filter,
_ => _.EventLogSequenceNumber,
Builders <MongoDB.Events.Event> .Projection.Expression(_ => _eventConverter.ToRuntimeStreamEvent(_)),
Builders <MongoDB.Events.Event> .Projection.Expression(_ => new Artifacts.Artifact(_.Metadata.TypeId, _.Metadata.TypeGeneration)));
/// <inheritdoc/>
public async Task <EventLogSequenceNumber> Write(CommittedEvent @event, ConsentId consentId, ScopeId scope, CancellationToken cancellationToken)
{
_logger.WritingEventHorizonEvent(
@event.EventLogSequenceNumber,
@event.ExecutionContext.Tenant,
@event.ExecutionContext.Microservice,
scope);
var writtenStreamPosition = await _eventsToStreamsWriter.Write(
await _streams.GetEventLog(scope, cancellationToken).ConfigureAwait(false),
_eventFilter,
streamPosition => _eventConverter.ToEventLogEvent(
new CommittedExternalEvent(
streamPosition.Value,
@event.Occurred,
@event.EventSource,
@event.ExecutionContext,
@event.Type,
false,
@event.Content,
@event.EventLogSequenceNumber,
DateTimeOffset.UtcNow,
consentId)),
cancellationToken).ConfigureAwait(false);
_streamWatcher.NotifyForEvent(scope, StreamId.EventLog, writtenStreamPosition);
return(writtenStreamPosition.Value);
}
/// <inheritdoc/>
public async Task Write(CommittedEvent @event, ConsentId consentId, ScopeId scope, CancellationToken cancellationToken)
{
_logger.Trace(
"Writing Event Horizon Event: {EventLogSequenceNumber} from Tenant: {Tenant} in Microservice {Microservice} to Scope: {Scope}",
@event.EventLogSequenceNumber,
@event.ExecutionContext.Tenant,
@event.ExecutionContext.Microservice,
scope);
await _eventsToStreamsWriter.Write(
await _streams.GetEventLog(scope, cancellationToken).ConfigureAwait(false),
_eventFilter,
streamPosition => _eventConverter.ToEventLogEvent(
new CommittedExternalEvent(
streamPosition.Value,
@event.Occurred,
@event.EventSource,
@event.ExecutionContext,
@event.Type,
false,
@event.Content,
@event.EventLogSequenceNumber,
DateTimeOffset.UtcNow,
consentId)),
cancellationToken).ConfigureAwait(false);
}
Task <IMongoCollection <MongoDB.Events.Event> > GetEventLog(ScopeId scope, CancellationToken cancellationToken)
=> scope == ScopeId.Default
? Task.FromResult(_streams.DefaultEventLog)
: _streams.GetEventLog(scope, cancellationToken);
