retoor
3c4334cec9
Full C++23 framework tree: runtime, observability, security, data, app, realtime, supervisor, clients, CLI, example plus enterprise tenancy, audit, operability, governance, supplychain. Postgres via docker compose for tests.
73 lines
1.6 KiB
C++
73 lines
1.6 KiB
C++
#pragma once
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// Observability skeletons: typed event bus, metrics registry, and tracer.
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// All three compile to near-zero overhead when kEnabled is false.
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// Gap: real 02-observability.md owns the log format, Prometheus and OTel
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// export, and the zero-cost macro layer.
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#include <functional>
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#include <map>
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#include <mutex>
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#include <string>
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#include <vector>
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namespace molo::example::fw {
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struct Event {
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std::string type;
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std::string payload;
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std::string correlation_id;
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};
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class EventBus {
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public:
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static constexpr bool kEnabled = true;
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void on(const std::string& type, std::function<void(const Event&)> listener);
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void emit(const Event& event);
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std::vector<Event> delivered() const;
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private:
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mutable std::mutex mu_;
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std::map<std::string, std::vector<std::function<void(const Event&)>>>
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listeners_;
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std::vector<Event> delivered_;
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};
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class Metrics {
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public:
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static constexpr bool kEnabled = true;
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void inc(const std::string& name, double value = 1.0);
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void gauge(const std::string& name, double value);
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double get(const std::string& name) const;
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std::string render_prometheus() const;
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private:
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mutable std::mutex mu_;
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std::map<std::string, double> values_;
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};
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struct Span {
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std::string trace_id;
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std::string span_id;
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std::string name;
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std::string correlation_id;
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};
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class Telemetry {
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public:
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static constexpr bool kEnabled = true;
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Span start_span(const std::string& name, const std::string& correlation_id);
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void finish_span(const Span& span);
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std::vector<Span> spans() const;
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private:
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mutable std::mutex mu_;
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std::vector<Span> spans_;
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unsigned long next_id_ = 1;
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};
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} // namespace molo::example::fw
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