mapper

type Mapper interface {
	// GetKey converts a request into an aggregated key
	// Returns error if the regex parsing in the config fails to compile or match
	// A DiscoveryRequest will always contain typeUrl
	// ADS will contain typeUrl https://github.com/envoyproxy/envoy/blob/master/api/envoy/api/v2/discovery.proto#L46
	// Implicit xds requests will have typeUrl set because go-control-plane mutates the DiscoveryRequest
	// ref: https://github.com/envoyproxy/go-control-plane/blob/master/pkg/server/server.go#L310
	GetKey(request transport.Request) (string, error)
}