metrics

Documentation

Index

• Variables
• func ObserveResponseSize(r *http.Request) int
• func RequestDurationHandler(version string, next http.Handler) http.Handler

Variables

var (
	InFlightGauge = prometheus.NewGauge(
		prometheus.GaugeOpts{
			Name: "in_flight_requests",
			Help: "A gauge of requests currently being served by the wrapped handler.",
		},
	)

	// RequestDuration is partitioned by the HTTP method and handler. It uses custom
	// buckets based on the expected request duration.
	RequestDuration = prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "request_duration_seconds",
			Help:    "A histogram of latencies for requests.",
			Buckets: prometheus.DefBuckets,
		},
		[]string{"method", "path", "status", "version"},
	)

	// ResponseSize has no labels, making it a zero-dimensional
	// ObserverVec.
	ResponseSize = prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "response_size_bytes",
			Help:    "A histogram of response sizes for requests.",
			Buckets: []float64{200, 500, 900, 1500},
		},
		[]string{},
	)
)

Functions

func ObserveResponseSize

func ObserveResponseSize(r *http.Request) int

func RequestDurationHandler

func RequestDurationHandler(version string, next http.Handler) http.Handler