## About the changes
- Removes the feature flag for the created_by migrations.
- Adds a configuration option in IServerOption for
`ENABLE_SCHEDULED_CREATED_BY_MIGRATION` that defaults to `false`
- the new configuration option when set on startup enables scheduling of
the two created_by migration services (features+events)
- Removes the dependency on flag provider in EventStore as it's no
longer needed
- Adds a brief description of the new configuration option in
`configuring-unleash.md`
- Sets the events created_by migration interval to 15 minutes, up from
2.
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Co-authored-by: Gastón Fournier <gaston@getunleash.io>
## About the changes
Schedules a best-effort task setting the value of
events.created_by_user_id based on what is found in the created_by
column and if it's capable of resolving that to a userid/a system id.
The process is executed in the events-store, it takes a chunk of events
that haven't been processed yet, attempts to join users and api_tokens
tables on created_by = username/email, loops through and tries to figure
out an id to set. Then updates the record.
---------
Co-authored-by: Gastón Fournier <gaston@getunleash.io>
## About the changes
EventsService is a dependency in most of our services. This creates
helper methods to create them easily and replace a few places where
we're creating them manually
