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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "opentelemetry/context/propagation/text_map_propagator.h"
#include "opentelemetry/version.h"
OPENTELEMETRY_BEGIN_NAMESPACE
namespace context
{
namespace propagation
{
/**
* No-op implementation TextMapPropagator
*/
class NoOpPropagator : public TextMapPropagator
{
public:
/** Noop extract function does nothing and returns the input context */
context::Context Extract(const TextMapCarrier & /*carrier*/,
context::Context &context) noexcept override
{
return context;
}
/** Noop inject function does nothing */
void Inject(TextMapCarrier & /*carrier*/,
const context::Context & /* context */) noexcept override
{}
bool Fields(nostd::function_ref<bool(nostd::string_view)> /* callback */) const noexcept override
{
return true;
}
};
} // namespace propagation
} // namespace context
OPENTELEMETRY_END_NAMESPACE
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