public virtual async ValueTask OnReplicaRequest(ReplicaRequest request, CancellationToken cancellationToken)
{
if (request.PublisherId != Publisher.Id)
{
await OnUnsupportedRequest(request, cancellationToken).ConfigureAwait(false);
return;
}
var publicationId = request.PublicationId;
var publication = Publisher.Get(publicationId);
if (publication == null)
{
await OnUnsupportedRequest(request, cancellationToken).ConfigureAwait(false);
return;
}
if (Subscriptions.TryGetValue(publicationId, out var subscriptionProcessor))
{
goto subscriptionExists;
}
lock (Lock) {
// Double check locking
if (Subscriptions.TryGetValue(publicationId, out subscriptionProcessor))
{
goto subscriptionExists;
}
subscriptionProcessor = PublisherImpl.SubscriptionProcessorFactory.Create(
PublisherImpl.SubscriptionProcessorGeneric,
publication, Channel, PublisherImpl.SubscriptionExpirationTime,
PublisherImpl.Clocks, Services);
Subscriptions[publicationId] = subscriptionProcessor;
}
_ = subscriptionProcessor.Run(default)
public static IPublication Get(
this IPublisher publisher, Symbol publicationId)
=> publisher.Get(publicationId) ?? throw new KeyNotFoundException();