Alerting/Annotations: Prevent panics from composite store jobs from crashing Grafana (#83459)
* Don't directly use pointer to json
* Don't crash entire process if a store job panics
* Add debug logs when failing to parse/handle Loki entries
(cherry picked from commit af528d2f66)
Co-authored-by: William Wernert <william.wernert@grafana.com>
* Add Loki historian store stub
* Add composite store
* Use composite store if Loki historian enabled
* Split store interface into read/write
* Make composite + historian stores read only
* Use variadic constructor for composite
* Modify Loki store enable logic
* Use dskit.concurrency.ForEachJob for parallelism
grafana-delivery-bot[bot]
William Wernert