metrics

Documentation

Index

• type Metrics
  • func New(ctx context.Context) *Metrics
  • func (m *Metrics) GaugeName() string
  • func (m *Metrics) Gauges(_ context.Context) map[string][]system.TaggedValue
  • func (m *Metrics) RoundTrip(req *http.Request) (*http.Response, error)
  • func (m *Metrics) WithTracer(ctx context.Context, route string) context.Context
  • func (m *Metrics) Wrap(name string, r http.RoundTripper) http.RoundTripper

Types

type Metrics

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

func New

func New(ctx context.Context) *Metrics

New creates a new Metrics for capturing metrics from http trace. the context is needed to extract the metrics provider.

func (*Metrics) GaugeName

func (m *Metrics) GaugeName() string

func (*Metrics) Gauges

func (m *Metrics) Gauges(_ context.Context) map[string][]system.TaggedValue

Gauges are instantaneous name value pairs

func (*Metrics) RoundTrip

func (m *Metrics) RoundTrip(req *http.Request) (*http.Response, error)

RoundTrip makes Metrics a http.RoundTripper. It adds reference counting to round trips to be able to count inflight requests.

func (*Metrics) WithTracer

func (m *Metrics) WithTracer(ctx context.Context, route string) context.Context

WithTracer adds the tracer onto the context for this request.

func (*Metrics) Wrap

func (m *Metrics) Wrap(name string, r http.RoundTripper) http.RoundTripper

Wrap wraps r with the Metrics reference counted round tripper.