SourceFromRequest extracts the required configuration values from the map and returns a usable PlanetScaleSource to connect to a PlanetScale database.

StateFromRequest unmarshals the stateJson saved in Fivetran and turns that into a structure we can use within the connector to incrementally sync tables from PlanetScale.

ConfiguredRequest is a grpc request that contains a Configuration in the payload.

StatefulRequest is a grpc request that contains sync state in the payload.