grafana source uid added to grafana-source interface #359
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Issue
The grafana source providers need to receive back from grafana the UIDs assigned to them. This, to support cross-referencing functionalities such as canonical/tempo-coordinator-k8s-operator#77.
Tandem PR in prometheus to forward this data to remote-write integrations
Solution
added a
grafana_source_uids: Dict[unit_name: source_uid]
field to the application databag on the grafana side.All changes are additive and therefore backwards-compatible.