We have a design where we do something like this:
After a tenant gets added, any events associated with a given Tenant get added to streams within a category like:
We also have some stateful projections that operate over those categories to produce summary stats. We can read this at /projections/CommitsStats/state?partition=Commits-TenantId
We were thinking to create an EventStore user per tenant. I already know how to POST a new EventStore user via the REST api – but this only makes sense if we can set ACLs on these streams and partitions.
Is there a way to do that inside the projection itself? I know there are $-prefixed events, but I don’t know all of them or where they are documented.
What I’d like to be able to do is when a “Commits-” stream comes into existence, I can set the $acl one time, and then forget about it.
And, similarly for the partition within the projection.