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f61d083d3b
Change-Id: I0e6a26c62bd1f6eaa07c38a06152cb7a0f2eedc2 Reviewed-on: https://go-review.googlesource.com/c/tools/+/225579 Run-TryBot: Ian Cottrell <iancottrell@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com> Reviewed-by: Robert Findley <rfindley@google.com>
21 lines
690 B
Go
21 lines
690 B
Go
// 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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)
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func StartSpan(ctx context.Context, name string, tags ...Tag) (context.Context, func()) {
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ctx = dispatch(ctx, makeEvent(StartSpanType, sTags{Name.Of(name)}, tags))
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return ctx, func() { dispatch(ctx, makeEvent(EndSpanType, sTags{}, nil)) }
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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 dispatch(ctx, makeEvent(DetachType, sTags{}, nil))
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}
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