grpcx

var (
	ServerRequestDuration = prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "grpc_server_request_duration_seconds",
			Help:    "gRPC server request duration in seconds",
			Buckets: []float64{0.005, 0.01, 0.025, 0.05, 0.1, 0.25, 0.5, 1, 2.5, 5, 10},
		},
		[]string{"method", "code"},
	)

	ServerRequestsTotal = prometheus.NewCounterVec(
		prometheus.CounterOpts{
			Name: "grpc_server_requests_total",
			Help: "gRPC server requests total",
		},
		[]string{"method", "code"},
	)

	ServerInFlight = prometheus.NewGaugeVec(
		prometheus.GaugeOpts{
			Name: "grpc_server_requests_in_flight",
			Help: "gRPC server requests currently processing",
		},
		[]string{"method"},
	)
)