trace

Documentation

Index

• func ContextWithSpan(ctx context.Context, span opentracing.Span) context.Context
• func FromIncomingContext(ctx context.Context) opentracing.StartSpanOption
• func HeaderExtractor(carrier http.Header) opentracing.StartSpanOption
• func HeaderInjector(ctx context.Context, carrier http.Header) context.Context
• func MetadataInjector(ctx context.Context, md metadata.MD) context.Context
• func SetGlobalTracer(tracer opentracing.Tracer)
• func SpanFromContext(ctx context.Context) opentracing.Span
• func StartSpanFromContext(ctx context.Context, op string, opts ...opentracing.StartSpanOption) (opentracing.Span, context.Context)
• func TraceID(ctx context.Context) string
• type CarrierMD
  • func (cm CarrierMD) ForeachKey(handler func(key, val string) error) error
  • func (cm CarrierMD) Set(key, val string)
• type NullStartSpanOption
  • func (n NullStartSpanOption) Apply(options *opentracing.StartSpanOptions)

Functions

func ContextWithSpan

func ContextWithSpan(ctx context.Context, span opentracing.Span) context.Context

ContextWithSpan return a new `context.Context` that holds a reference to the span

func FromIncomingContext

func FromIncomingContext(ctx context.Context) opentracing.StartSpanOption

FromIncomingContext extract trace info from span

func HeaderExtractor

func HeaderExtractor(carrier http.Header) opentracing.StartSpanOption

HeaderExtractor extract trace info from span

func HeaderInjector

func HeaderInjector(ctx context.Context, carrier http.Header) context.Context

HeaderInjector inject trace info to span

func MetadataInjector

func MetadataInjector(ctx context.Context, md metadata.MD) context.Context

MetadataInjector inject trace info to span

func SetGlobalTracer

func SetGlobalTracer(tracer opentracing.Tracer)

SetGlobalTracer set global trace instance

func SpanFromContext

func SpanFromContext(ctx context.Context) opentracing.Span

SpanFromContext return the span attached to current context

func StartSpanFromContext

func StartSpanFromContext(ctx context.Context, op string, opts ...opentracing.StartSpanOption) (opentracing.Span, context.Context)

StartSpanFromContext start a span from current context

func TraceID

func TraceID(ctx context.Context) string

TraceID return trace id as string

Types

type CarrierMD

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

func (CarrierMD) ForeachKey

func (cm CarrierMD) ForeachKey(handler func(key, val string) error) error

ForeachKey returns TextMap contents via repeated calls to the `handler` function. If any call to `handler` returns a non-nil error, ForeachKey terminates and returns that error.

func (CarrierMD) Set

func (cm CarrierMD) Set(key, val string)

Set a key:value pair to the carrier. Multiple calls to Set() for the same key leads to undefined behavior.

type NullStartSpanOption

type NullStartSpanOption struct{}

func (NullStartSpanOption) Apply

func (n NullStartSpanOption) Apply(options *opentracing.StartSpanOptions)