RotatePolicy.h

#pragma once
 
#include <chrono>
#include <filesystem>
#include <functional>
#include <string>
 
#include "ll/api/base/Macro.h"
#include "ll/api/base/StdInt.h"
#include "ll/api/data/TmWithMs.h"
 
namespace ll::io {
 
enum class RotateInterval : int {
    None,
    Hourly,
    Daily,
};
 
struct ArchiveNameInfo {
    data::TmWithMs time;
    size_t         index;
    RotateInterval interval;
};
 
struct RotateConfig {
    bool           rotateOnOpen     = true;
    uint64         maxFileSize      = 32ull * 1024 * 1024;
    RotateInterval interval         = RotateInterval::Daily;
    bool           compress         = true;
    size_t         keepUncompressed = 7;
    bool           cleanup          = true;
    size_t         maxFiles         = 1024;
    int            maxAgeDays       = 120;
    uint64         totalSizeCap     = 512ull * 1024 * 1024;
};
 
class RotatePolicy : public RotateConfig {
public:
    RotatePolicy() = default;
    RotatePolicy(RotateConfig const& config) : RotateConfig(config) {}
 
    LLNDAPI static std::string defaultNamer(ArchiveNameInfo const& info);
 
    std::function<std::string(ArchiveNameInfo const&)> namer{&defaultNamer};
 
    LLNDAPI static RotatePolicy disabled();
};
 
} // namespace ll::io