tracer.h

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#pragma once
 
#include <neograph/api.h>
 
#include <cstdint>
#include <memory>
#include <string>
#include <string_view>
 
namespace neograph::observability {
 
class NEOGRAPH_API Span {
public:
    virtual ~Span() = default;
 
    virtual void set_attribute(std::string_view key, std::string_view value) = 0;
    virtual void set_attribute(std::string_view key, int64_t value) = 0;
    virtual void set_attribute(std::string_view key, double value) = 0;
 
    virtual void set_attribute_bool(std::string_view key, bool value) = 0;
 
    void set_attribute(std::string_view key, const char* value) {
        set_attribute(key, std::string_view(value ? value : ""));
    }
 
    virtual void add_event(std::string_view name,
                           std::string_view payload = {}) = 0;
 
    virtual void set_status_ok() = 0;
    virtual void set_status_error(std::string_view message) = 0;
 
    virtual void end() = 0;
};
 
class NEOGRAPH_API Tracer {
public:
    virtual ~Tracer() = default;
 
    virtual std::unique_ptr<Span> start_span(std::string_view name,
                                             Span* parent = nullptr) = 0;
};
 
} // namespace neograph::observability