metrics

Documentation

Index

• type Recorder
  • func NewRecorder(routeForDomain func(domain string) *proxy.Route) *Recorder
  • func (r *Recorder) Handler() http.Handler
  • func (r *Recorder) TrackBadGateway(fn func(http.ResponseWriter, *http.Request, error)) func(http.ResponseWriter, *http.Request, error)
  • func (r *Recorder) TrackHello(fn func(*tls.ClientHelloInfo) (*tls.Certificate, error)) func(*tls.ClientHelloInfo) (*tls.Certificate, error)
  • func (r *Recorder) TrackResponse(fn func(*http.Response) error) func(*http.Response) error

Types

type Recorder

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

Recorder provides methods to track metrics for requests

func NewRecorder

func NewRecorder(routeForDomain func(domain string) *proxy.Route) *Recorder

NewRecorder creates a new Recorder that will use the given function to map request hostnames to routes.

func (*Recorder) Handler

func (r *Recorder) Handler() http.Handler

Handler returns a HTTP handler that will provide prometheus metrics.

func (*Recorder) TrackBadGateway

func (r *Recorder) TrackBadGateway(fn func(http.ResponseWriter, *http.Request, error)) func(http.ResponseWriter, *http.Request, error)

TrackBadGateway wraps the ErrorHandler field of httputil.ReverseProxy, recording a response with an implied 502 status code.

func (*Recorder) TrackHello

func (r *Recorder) TrackHello(fn func(*tls.ClientHelloInfo) (*tls.Certificate, error)) func(*tls.ClientHelloInfo) (*tls.Certificate, error)

TrackHello wraps the GetCertificate field of tls.Config, recording whether or not a certificate was returned.

func (*Recorder) TrackResponse

func (r *Recorder) TrackResponse(fn func(*http.Response) error) func(*http.Response) error

TrackResponse wraps the ModifyResponse field of httputil.ReverseProxy, recording the response and its HTTP status code.