tracing

Documentation

Index

• func CurrentSpan() opentracing.Span
• func Execute(op string, r *http.Request, client *http.Client) (*http.Response, error)
• func NewPropagatingRoundTripper(rt http.RoundTripper) http.RoundTripper
• func TraceChild(op string, fn func(span opentracing.Span) error) (err error)
• func TraceOrCreate(op string, fn func(span opentracing.Span) error) (err error)
• func WithSpan(span opentracing.Span, fn func())
• func WithSpanPropagation(client *http.Client) *http.Client
• type Middleware
  • func Tracing(service string, op string) Middleware

Functions

func CurrentSpan

func CurrentSpan() opentracing.Span

Returns the current span, or nil, if no span is currently set in local storage.

func Execute

func Execute(op string, r *http.Request, client *http.Client) (*http.Response, error)

func NewPropagatingRoundTripper

func NewPropagatingRoundTripper(rt http.RoundTripper) http.RoundTripper

func TraceChild

func TraceChild(op string, fn func(span opentracing.Span) error) (err error)

Runs an operation and traces it with the given name. This will create a new child span if some span is currently active.

func TraceOrCreate

func TraceOrCreate(op string, fn func(span opentracing.Span) error) (err error)

Runs an operation and traces it with the given name. This will create a new span if no span is currently active.

func WithSpan

func WithSpan(span opentracing.Span, fn func())

Runs the given function with the provided span set in local storage for the duration of function call. This method will not call 'Finish()' on the span

func WithSpanPropagation

func WithSpanPropagation(client *http.Client) *http.Client

Returns a new http.Client that has automatic propagation of zipkin trace ids enabled.

Types

type Middleware

type Middleware func(http.Handler) http.Handler

func Tracing

func Tracing(service string, op string) Middleware

Returns a middleware that adds tracing to an http handler. This will create a new and empty local storage for the current go routine to propagate the tracing context.