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https://github.com/zerotier/ZeroTierOne.git
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73 lines
2.3 KiB
C++
73 lines
2.3 KiB
C++
/*
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* Copyright The OpenTelemetry Authors
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <functional>
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#include <string>
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#include "opentracing/span.h"
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#include "opentelemetry/baggage/baggage.h"
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#include "opentelemetry/nostd/shared_ptr.h"
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#include "opentelemetry/nostd/string_view.h"
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#include "opentelemetry/trace/span_context.h"
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#include "opentelemetry/version.h"
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OPENTELEMETRY_BEGIN_NAMESPACE
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namespace opentracingshim
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{
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using BaggagePtr = nostd::shared_ptr<opentelemetry::baggage::Baggage>;
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class SpanContextShim final : public opentracing::SpanContext
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{
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public:
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explicit SpanContextShim(const opentelemetry::trace::SpanContext &context,
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const BaggagePtr &baggage)
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: context_(context), baggage_(baggage)
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{}
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inline const opentelemetry::trace::SpanContext &context() const { return context_; }
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inline const BaggagePtr &baggage() const { return baggage_; }
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SpanContextShim newWithKeyValue(nostd::string_view key, nostd::string_view value) const noexcept;
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bool BaggageItem(nostd::string_view key, std::string &value) const noexcept;
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using VisitBaggageItem = std::function<bool(const std::string &key, const std::string &value)>;
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void ForeachBaggageItem(VisitBaggageItem f) const override;
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std::unique_ptr<opentracing::SpanContext> Clone() const noexcept override;
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std::string ToTraceID() const noexcept override;
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std::string ToSpanID() const noexcept override;
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static inline const SpanContextShim *extractFrom(const opentracing::SpanContext *span_context)
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{
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#ifndef OPENTELEMETRY_RTTI_ENABLED
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auto result = static_cast<const SpanContextShim *>(span_context);
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return result && result->provides_context_and_baggage_ == kUniqueTag ? result : nullptr;
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#else
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return dynamic_cast<const SpanContextShim *>(span_context);
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#endif
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}
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private:
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template <typename T>
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static std::string toHexString(const T &id_item)
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{
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char buf[T::kSize * 2];
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id_item.ToLowerBase16(buf);
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return std::string(buf, sizeof(buf));
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}
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opentelemetry::trace::SpanContext context_;
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BaggagePtr baggage_;
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#ifndef OPENTELEMETRY_RTTI_ENABLED
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static constexpr uint64_t kUniqueTag = 0x07e1ca578e57a71c;
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uint64_t provides_context_and_baggage_ = kUniqueTag;
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#endif
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};
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} // namespace opentracingshim
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OPENTELEMETRY_END_NAMESPACE
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