Notification is not sent to subscribed users

I subscribe current user to a specific message:

await _notificationSubscriptionManager.SubscribeAsync(AbpSession.ToUserIdentifier(), HatchConsts.KafkaMessages);

(The table AbpNotificationSubscriptions has proper value)

but when I publish notifications like this:

wait _notificationPublisher.PublishAsync(HatchConsts.KafkaMessages, notificationData);

(the table AbpNotifications has proper values)

nothing happens!

but when I publish notification like this:

await _notificationPublisher.PublishAsync(HatchConsts.KafkaMessages, notificationData,userIds:new []{ new UserIdentifier(1 , 1) });

(nothing in AbpUserNotifications table)

it works!

what is wrong?

[acjh]

I think when I call PublishAsync method without UserIdentifier, the message should send to all subscribers, is that right?

No, if tenantIds is also null, then the message is sent to subscribers of the current tenant — in a background job, the current tenant would also be null, so the message is sent to subscribers of the host.

https://github.com/aspnetboilerplate/aspnetboilerplate/blob/4bfc29aaaab3846962902e0aba86f57a475898f6/src/Abp/Notifications/INotificationPublisher.cs#L29-L44

In a single database approach, you can pass NotificationPublisher.AllTenants to send the message to all subscribers:

- await _notificationPublisher.PublishAsync(HatchConsts.KafkaMessages, notificationData);
+ await _notificationPublisher.PublishAsync(
+     HatchConsts.KafkaMessages,
+     notificationData,
+     tenantIds: NotificationPublisher.AllTenants);

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