vars

Documentation

Index

• Constants
• Variables
• func Report(server string, req request.Request, zone, rcode string, size int, ...)

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

	RequestDuration = promauto.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 per zone.",
	}, []string{"server", "zone"})

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

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

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

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

	PluginEnabled = promauto.NewGaugeVec(prometheus.GaugeOpts{
		Namespace: plugin.Namespace,
		Name:      "plugin_enabled",
		Help:      "A metric that indicates whether a plugin is enabled on per server and zone basis.",
	}, []string{"server", "zone", "name"})
)

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

Functions

func Report

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

Report reports the metrics data associated with request. This function is exported because it is also called from core/dnsserver to report requests hitting the server that should not be handled and are thus not sent down the plugin chain.