tracing

Documentation

Index

• Variables
• func Client(tracer *Tracer, opts ...Option) endpoint.Middleware
• func InitTracing() func()
• func Server(opts ...Option) endpoint.Middleware
• func SetClientSpan(ctx context.Context, span trace.Span, m interface{})
• type Metadata
  • func (b Metadata) Extract(parent context.Context, carrier propagation.TextMapCarrier) context.Context
  • func (b Metadata) Fields() []string
  • func (b Metadata) Inject(ctx context.Context, carrier propagation.TextMapCarrier)
• type Option
  • func WithPropagator(propagator propagation.TextMapPropagator) Option
  • func WithTracerProvider(provider trace.TracerProvider) Option
• type Tracer
  • func NewTracer(kind trace.SpanKind, opts ...Option) *Tracer
  • func (t *Tracer) End(ctx context.Context, span trace.Span, m interface{}, err error)
  • func (t *Tracer) Start(ctx context.Context, operation string, carrier propagation.TextMapCarrier) (context.Context, trace.Span)

Variables

var IsTracing bool

Functions

func Client

func Client(tracer *Tracer, opts ...Option) endpoint.Middleware

func InitTracing

func InitTracing() func()

func Server

func Server(opts ...Option) endpoint.Middleware

Server returns a new server middleware for OpenTelemetry.

func SetClientSpan

func SetClientSpan(ctx context.Context, span trace.Span, m interface{})

Types

type Metadata

type Metadata struct{}

Metadata is tracing metadata propagator

func (Metadata) Extract

func (b Metadata) Extract(parent context.Context, carrier propagation.TextMapCarrier) context.Context

Extract returns a copy of parent with the metadata from the carrier added.

func (Metadata) Fields

func (b Metadata) Fields() []string

Fields returns the keys who's values are set with Inject.

func (Metadata) Inject

func (b Metadata) Inject(ctx context.Context, carrier propagation.TextMapCarrier)

Inject sets metadata key-values from ctx into the carrier.

type Option

type Option func(*options)

Option is tracing option.

func WithPropagator

func WithPropagator(propagator propagation.TextMapPropagator) Option

WithPropagator with tracer propagator.

func WithTracerProvider

func WithTracerProvider(provider trace.TracerProvider) Option

WithTracerProvider with tracer provider. Deprecated: use otel.SetTracerProvider(provider) instead.

type Tracer

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

Tracer is otel span tracer

func NewTracer

func NewTracer(kind trace.SpanKind, opts ...Option) *Tracer

NewTracer create tracer instance

func (*Tracer) End

func (t *Tracer) End(ctx context.Context, span trace.Span, m interface{}, err error)

End finish tracing span

func (*Tracer) Start

func (t *Tracer) Start(ctx context.Context, operation string, carrier propagation.TextMapCarrier) (context.Context, trace.Span)

Start start tracing span