vars

Documentation

Index

• Constants
• Variables
• func Report(ctx context.Context, req request.Request, zone, rcode string, size int, ...)
• func WithServer(ctx context.Context) string

Constants

const (

	// Dropped indicates we dropped the query before any handling. It has no closing dot, so it can not be a valid zone.
	Dropped = "dropped"
)

Variables

var (
	RequestCount = prometheus.NewCounterVec(prometheus.CounterOpts{
		Namespace: plugin.Namespace,
		Subsystem: subsystem,
		Name:      "request_count_total",
		Help:      "Counter of DNS requests made per zone, protocol and family.",
	}, []string{"server", "zone", "proto", "family"})

	RequestDuration = prometheus.NewHistogramVec(prometheus.HistogramOpts{
		Namespace: plugin.Namespace,
		Subsystem: subsystem,
		Name:      "request_duration_seconds",
		Buckets:   plugin.TimeBuckets,
		Help:      "Histogram of the time (in seconds) each request took.",
	}, []string{"server", "zone"})

	RequestSize = prometheus.NewHistogramVec(prometheus.HistogramOpts{
		Namespace: plugin.Namespace,
		Subsystem: subsystem,
		Name:      "request_size_bytes",
		Help:      "Size of the EDNS0 UDP buffer in bytes (64K for TCP).",
		Buckets:   []float64{0, 100, 200, 300, 400, 511, 1023, 2047, 4095, 8291, 16e3, 32e3, 48e3, 64e3},
	}, []string{"server", "zone", "proto"})

	RequestDo = prometheus.NewCounterVec(prometheus.CounterOpts{
		Namespace: plugin.Namespace,
		Subsystem: subsystem,
		Name:      "request_do_count_total",
		Help:      "Counter of DNS requests with DO bit set per zone.",
	}, []string{"server", "zone"})

	RequestType = prometheus.NewCounterVec(prometheus.CounterOpts{
		Namespace: plugin.Namespace,
		Subsystem: subsystem,
		Name:      "request_type_count_total",
		Help:      "Counter of DNS requests per type, per zone.",
	}, []string{"server", "zone", "type"})

	ResponseSize = prometheus.NewHistogramVec(prometheus.HistogramOpts{
		Namespace: plugin.Namespace,
		Subsystem: subsystem,
		Name:      "response_size_bytes",
		Help:      "Size of the returned response in bytes.",
		Buckets:   []float64{0, 100, 200, 300, 400, 511, 1023, 2047, 4095, 8291, 16e3, 32e3, 48e3, 64e3},
	}, []string{"server", "zone", "proto"})

	ResponseRcode = prometheus.NewCounterVec(prometheus.CounterOpts{
		Namespace: plugin.Namespace,
		Subsystem: subsystem,
		Name:      "response_rcode_count_total",
		Help:      "Counter of response status codes.",
	}, []string{"server", "zone", "rcode"})

	Panic = prometheus.NewCounter(prometheus.CounterOpts{
		Namespace: plugin.Namespace,
		Name:      "panic_count_total",
		Help:      "A metrics that counts the number of panics.",
	})
)

Request* and Response* are the prometheus counters and gauges we are using for exporting metrics.

Functions

func Report

func Report(ctx context.Context, req request.Request, zone, rcode string, size int, start time.Time)

Report reports the metrics data associcated with request.

func WithServer

func WithServer(ctx context.Context) string

WithServer returns the current server handling the request.