buildkit/util/tracing/multispan.go

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package tracing
import (
opentracing "github.com/opentracing/opentracing-go"
)
// MultiSpan allows shared tracing to multiple spans.
// TODO: This is a temporary solution and doesn't really support shared tracing yet. Instead the first always wins.
type MultiSpan struct {
opentracing.Span
}
func NewMultiSpan() *MultiSpan {
return &MultiSpan{}
}
func (ms *MultiSpan) Add(s opentracing.Span) {
if ms.Span == nil {
ms.Span = s
}
}