micro/tracer/tracer.go
Vasiliy Tolstov b075230ae5 global cleanup
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
2022-05-03 14:38:44 +03:00

64 lines
1.4 KiB
Go

// Package tracer provides an interface for distributed tracing
package tracer // import "go.unistack.org/micro/v3/tracer"
import (
"context"
)
// DefaultTracer is the global default tracer
var DefaultTracer = NewTracer()
// Tracer is an interface for distributed tracing
type Tracer interface {
// Name return tracer name
Name() string
// Init tracer with options
Init(...Option) error
// Start a trace
Start(ctx context.Context, name string, opts ...SpanOption) (context.Context, Span)
}
type Span interface {
// Tracer return underlining tracer
Tracer() Tracer
// Finish complete and send span
Finish(opts ...SpanOption)
// AddEvent add event to span
AddEvent(name string, opts ...EventOption)
// Context return context with span
Context() context.Context
// SetName set the span name
SetName(name string)
// SetLabels set the span labels
SetLabels(labels ...Label)
}
type Label struct {
val interface{}
key string
}
func LabelAny(k string, v interface{}) Label {
return Label{key: k, val: v}
}
func LabelString(k string, v string) Label {
return Label{key: k, val: v}
}
func LabelInt(k string, v int) Label {
return Label{key: k, val: v}
}
func LabelInt64(k string, v int64) Label {
return Label{key: k, val: v}
}
func LabelFloat64(k string, v float64) Label {
return Label{key: k, val: v}
}
func LabelBool(k string, v bool) Label {
return Label{key: k, val: v}
}