Program Listing for File always_on.h
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// Copyright The OpenTelemetry Authors
// SPDX-License-Identifier: Apache-2.0
#pragma once
#include "opentelemetry/sdk/trace/sampler.h"
OPENTELEMETRY_BEGIN_NAMESPACE
namespace sdk
{
namespace trace
{
class AlwaysOnSampler : public Sampler
{
public:
inline SamplingResult ShouldSample(
const opentelemetry::trace::SpanContext &parent_context,
opentelemetry::trace::TraceId /*trace_id*/,
nostd::string_view /*name*/,
opentelemetry::trace::SpanKind /*span_kind*/,
const opentelemetry::common::KeyValueIterable & /*attributes*/,
const opentelemetry::trace::SpanContextKeyValueIterable & /*links*/) noexcept override
{
if (!parent_context.IsValid())
{
return {Decision::RECORD_AND_SAMPLE, nullptr, opentelemetry::trace::TraceState::GetDefault()};
}
else
{
return {Decision::RECORD_AND_SAMPLE, nullptr, parent_context.trace_state()};
}
}
inline nostd::string_view GetDescription() const noexcept override { return "AlwaysOnSampler"; }
};
} // namespace trace
} // namespace sdk
OPENTELEMETRY_END_NAMESPACE