Program Listing for File baggage_context.h
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "opentelemetry/baggage/baggage.h"
#include "opentelemetry/context/context.h"
#include "opentelemetry/nostd/shared_ptr.h"
#include "opentelemetry/version.h"
OPENTELEMETRY_BEGIN_NAMESPACE
namespace baggage
{
static const std::string kBaggageHeader = "baggage";
inline nostd::shared_ptr<opentelemetry::baggage::Baggage> GetBaggage(
const opentelemetry::context::Context &context)
{
context::ContextValue context_value = context.GetValue(kBaggageHeader);
if (nostd::holds_alternative<nostd::shared_ptr<opentelemetry::baggage::Baggage>>(context_value))
{
return nostd::get<nostd::shared_ptr<opentelemetry::baggage::Baggage>>(context_value);
}
static nostd::shared_ptr<opentelemetry::baggage::Baggage> empty_baggage{
new opentelemetry::baggage::Baggage()};
return empty_baggage;
}
inline context::Context SetBaggage(opentelemetry::context::Context &context,
nostd::shared_ptr<opentelemetry::baggage::Baggage> baggage)
{
return context.SetValue(kBaggageHeader, baggage);
}
} // namespace baggage
OPENTELEMETRY_END_NAMESPACE