64 lines
1.3 KiB
Go
64 lines
1.3 KiB
Go
// Package tracer provides an interface for distributed tracing
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package tracer
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import (
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"context"
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)
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// DefaultTracer is the global default tracer
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var DefaultTracer Tracer = NewTracer()
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// Tracer is an interface for distributed tracing
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type Tracer interface {
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// Name return tracer name
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Name() string
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// Init tracer with options
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Init(...Option) error
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// Start a trace
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Start(ctx context.Context, name string, opts ...SpanOption) (context.Context, Span)
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}
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type Span interface {
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// Tracer return underlining tracer
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Tracer() Tracer
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// Finish complete and send span
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Finish(opts ...SpanOption)
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// AddEvent add event to span
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AddEvent(name string, opts ...EventOption)
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// Context return context with span
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Context() context.Context
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// SetName set the span name
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SetName(name string)
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// SetLabels set the span labels
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SetLabels(labels ...Label)
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}
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type Label struct {
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val interface{}
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key string
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}
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func Any(k string, v interface{}) Label {
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return Label{key: k, val: v}
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}
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func String(k string, v string) Label {
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return Label{key: k, val: v}
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}
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func Int(k string, v int) Label {
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return Label{key: k, val: v}
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}
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func Int64(k string, v int64) Label {
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return Label{key: k, val: v}
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}
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func Float64(k string, v float64) Label {
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return Label{key: k, val: v}
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}
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func Bool(k string, v bool) Label {
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return Label{key: k, val: v}
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}
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