The app I’m working on is split such that the same supervision tree superstructure is duplicated for an unbounded number of “tenants” (using a
:simple_one_to_one top-level supervisor). This is because I want fair scheduling and fault tolerance between tenants, but I also want multi-processing within individual tenants.
When a log is written, I’d like the tenant ID to be attached to the log. That way, if a tenant goes down, I can chase down diagnostic information for it specifically.
I could probably do this by passing the ID from parent to child, and then setting process metadata in the processes’
init function, but I don’t think other libraries would be able to pass the baton correctly when they spawn their own workers.
Is there something I’m missing here?