Respect Kibana / Fleet config schema when inheriting ES credentials #1394
+845
−9
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Fixes: #1393
Before this PR we were using the ES Config as a starting point and applying Kibana provider block and environment configs on top of that. This can lead to invalid Configs where both Username / Password and ApiKey are both configured.
This PR starts with an empty Kibana / Fleet config, then applies provider settings, environment overrides, then only applies defaults for unknown values (while respecting mutually exclusive values like Username / ApiKey)
Additionally we add
fleetConfigKeysandkibanaConfigKeyswhich allows us to track explicitly set fields. This adds a bit of overhead to maintain state, but allows us to correctly differentiate between explicit empty values and unset values in a way that supports both the sdkv2 and plugin framework implementations. Technically the Kibana config doesn't require tracking the keys because it only inherits string values from ES, but I thought it was more straightforward for Fleet and Kibana to use a similar pattern.