mirror of
https://github.com/golang/go
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35 lines
784 B
Go
35 lines
784 B
Go
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// Copyright 2019 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package event
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import (
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"context"
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"time"
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)
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func StartSpan(ctx context.Context, name string, tags ...Tag) (context.Context, func()) {
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ctx = ProcessEvent(ctx, Event{
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Type: StartSpanType,
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Message: name,
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At: time.Now(),
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Tags: tags,
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})
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return ctx, func() {
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ProcessEvent(ctx, Event{
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Type: EndSpanType,
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At: time.Now(),
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})
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}
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}
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// Detach returns a context without an associated span.
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// This allows the creation of spans that are not children of the current span.
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func Detach(ctx context.Context) context.Context {
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return ProcessEvent(ctx, Event{
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Type: DetachType,
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At: time.Now(),
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})
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}
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