tracing

Documentation

Index

• func RequestIDFromContext(ctx context.Context) string
• func WithRequestID(ctx context.Context, requestID string) context.Context
• type Tracer
  • func NewJaeger() (Tracer, error)
  • func NewNoop() Tracer

Functions

func RequestIDFromContext

func RequestIDFromContext(ctx context.Context) string

func WithRequestID

func WithRequestID(ctx context.Context, requestID string) context.Context

Types

type Tracer

type Tracer interface {
	io.Closer
	FromCtx(ctx context.Context, op string) (opentracing.Span, context.Context)
	FromCtxf(ctx context.Context, msg string, args ...interface{}) (opentracing.Span, context.Context)
}

Tracer describes a tracing adapter interface.

func NewJaeger

func NewJaeger() (Tracer, error)

NewJaeger allocates and returns a Jaeger implementation of the Tracer interface.

It reads configuration from the environment and defaults to reporting spans to agents on localhost:6831. All spans are logged and Promethues metrics are registered on prometheus.DefaultRegisterer.

func NewNoop

func NewNoop() Tracer

NewNoop allocates and returns a no-op implementation of the Tracer interface.