package prometheus

import "github.com/open-policy-agent/opa/internal/prometheus"

Index ¶

• type Provider
• func New(inner metrics.Metrics, logger loggerFunc, httpRequestBuckets []float64) *Provider
• func (p *Provider) All() map[string]interface{}
• func (p *Provider) Clear()
• func (p *Provider) Counter(name string) metrics.Counter
• func (p *Provider) Histogram(name string) metrics.Histogram
• func (*Provider) Info() metrics.Info
• func (p *Provider) InstrumentHandler(handler http.Handler, label string) http.Handler
• func (p *Provider) MarshalJSON() ([]byte, error)
• func (p *Provider) MustRegister(cs ...prometheus.Collector)
• func (p *Provider) Register(c prometheus.Collector) error
• func (p *Provider) RegisterEndpoints(registrar func(path, method string, handler http.Handler))
• func (p *Provider) Timer(name string) metrics.Timer
• func (p *Provider) Unregister(c prometheus.Collector) bool

Types ¶

type Provider ¶

type Provider struct {
	// contains filtered or unexported fields
}

Provider wraps a metrics.Metrics provider with a Prometheus registry that can instrument the HTTP server's handlers.

func New ¶

func New(inner metrics.Metrics, logger loggerFunc, httpRequestBuckets []float64) *Provider

New returns a new Provider object.

func (*Provider) All ¶

func (p *Provider) All() map[string]interface{}

All returns the union of the inner metric provider and the underlying prometheus registry.

func (*Provider) Clear ¶

func (p *Provider) Clear()

Clear resets the inner metric provider. The Prometheus registry does not expose an interface to clear the metrics so this call has no affect on metrics tracked by Prometheus.

func (*Provider) Counter ¶

func (p *Provider) Counter(name string) metrics.Counter

Counter returns a named counter.

func (*Provider) Histogram ¶

func (p *Provider) Histogram(name string) metrics.Histogram

Histogram returns a named histogram.

func (*Provider) Info ¶

func (*Provider) Info() metrics.Info

Info returns attributes that describe the metric provider.

func (*Provider) InstrumentHandler ¶

func (p *Provider) InstrumentHandler(handler http.Handler, label string) http.Handler

InstrumentHandler returned wrapped HTTP handler with added prometheus instrumentation

func (*Provider) MarshalJSON ¶

func (p *Provider) MarshalJSON() ([]byte, error)

MarshalJSON returns a JSON representation of the unioned metrics.

func (*Provider) MustRegister ¶

func (p *Provider) MustRegister(cs ...prometheus.Collector)

MustRegister register the collectors on OPA prometheus registry and panics when an error occurs

func (*Provider) Register ¶

func (p *Provider) Register(c prometheus.Collector) error

Register register the collectors on OPA prometheus registry

func (*Provider) RegisterEndpoints ¶

func (p *Provider) RegisterEndpoints(registrar func(path, method string, handler http.Handler))

RegisterEndpoints registers `/metrics` endpoint

func (*Provider) Timer ¶

func (p *Provider) Timer(name string) metrics.Timer

Timer returns a named timer.

func (*Provider) Unregister ¶

func (p *Provider) Unregister(c prometheus.Collector) bool

Unregister unregister the collectors on OPA prometheus registry

Source Files ¶

prometheus.go prometheus_go1.17.go