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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "opentelemetry/context/runtime_context.h"
#include "opentelemetry/trace/span.h"
#include "opentelemetry/version.h"
OPENTELEMETRY_BEGIN_NAMESPACE
namespace trace
{
/**
* Controls how long a span is active.
*
* On creation of the Scope object, the given span is set to the currently
* active span. On destruction, the given span is ended and the previously
* active span will be the currently active span again.
*/
class Scope final
{
public:
/**
* Initialize a new scope.
* @param span the given span will be set as the currently active span.
*/
Scope(const nostd::shared_ptr<Span> &span) noexcept
: token_(context::RuntimeContext::Attach(
context::RuntimeContext::GetCurrent().SetValue(kSpanKey, span)))
{}
private:
nostd::unique_ptr<context::Token> token_;
};
} // namespace trace
OPENTELEMETRY_END_NAMESPACE
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