Struct rlsPicker

balancer/rls/picker.go:53–74

rlsPicker selects the subConn to be used for a particular RPC. It does not manage subConns directly and delegates to pickers provided by child policies.

// rlsPicker selects the subConn to be used for a particular RPC. It does not
// manage subConns directly and delegates to pickers provided by child policies.
type rlsPicker struct {
	// The keyBuilder map used to generate RLS keys for the RPC. This is built
	// by the LB policy based on the received ServiceConfig.
	kbm keys.BuilderMap
	// Endpoint from the user's original dial target. Used to set the `host_key`
	// field in `extra_keys`.
	origEndpoint string

	lb *rlsBalancer

	// The picker is given its own copy of the below fields from the RLS LB policy
	// to avoid having to grab the mutex on the latter.
	rlsServerTarget string
	grpcTarget      string
	metricsRecorder estats.MetricsRecorder
	defaultPolicy   *childPolicyWrapper // Child policy for the default target.
	ctrlCh          *controlChannel     // Control channel to the RLS server.
	maxAge          time.Duration       // Cache max age from LB config.
	staleAge        time.Duration       // Cache stale age from LB config.
	bg              exitIdler
	logger          *internalgrpclog.PrefixLogger
}

// isFullMethodNameValid return true if name is of the form `/service/method`.
func isFullMethodNameValid(name string) bool {