Function extractHeader

pkg/ruler/frontend_client.go:131–139

(headers []*httpgrpc.Header, target string)

}

func extractHeader(headers []*httpgrpc.Header, target string) string {
	for _, h := range headers {
		if h.Key == target && len(h.Values) > 0 {
			return h.Values[0]
		}
	}

	return ""
}