log_sink.hpp

浏览该文件的文档.

#ifndef NEFORCE_LOGGING_LOG_SINK_HPP__
#define NEFORCE_LOGGING_LOG_SINK_HPP__

 
#include "NeForce/core/memory/unique_ptr.hpp"
#include "NeForce/core/time/datetime.hpp"
#include "NeForce/core/utility/color.hpp"
#include "NeForce/logging/log_event.hpp"
#include "NeForce/logging/log_formatter.hpp"
NEFORCE_BEGIN_NAMESPACE__


inline string default_sink_format(const log_event& ev) { return "["_s + to_string(ev.level) + "] " + ev.message; }

NEFORCE_API const color& level_color(log_level level);
 

class NEFORCE_API log_sink {
protected:
    unique_ptr<log_formatter> formatter_;    
    int64_t flush_interval_ms_{0};           
    timestamp last_flush_{timestamp::now()}; 
 
public:
    virtual ~log_sink() = default;

    virtual void log(const log_event& event) = 0;

    virtual void flush() = 0;

    void set_formatter(unique_ptr<log_formatter> formatter);

    void set_flush_interval(int64_t interval_ms) { flush_interval_ms_ = interval_ms; }

    NEFORCE_NODISCARD bool should_auto_flush() const {
        return flush_interval_ms_ > 0 && (timestamp::now() - last_flush_).value() >= flush_interval_ms_ * 1000;
    }
};
 

class NEFORCE_API console_sink final : public log_sink {
public:
    void log(const log_event& event) override;

    void flush() override;
};
 
 
#ifdef NEFORCE_PLATFORM_LINUX

enum class syslog_facility : int {
    LOG_AUTH = 1 << 3,    
    LOG_CRON = 9 << 3,    
    LOG_DAEMON = 3 << 3,  
    LOG_KERN = 0 << 3,    
    LOG_LOCAL0 = 16 << 3, 
    LOG_LOCAL1 = 17 << 3, 
    LOG_LOCAL2 = 18 << 3, 
    LOG_LOCAL3 = 19 << 3, 
    LOG_LOCAL4 = 20 << 3, 
    LOG_LOCAL5 = 21 << 3, 
    LOG_LOCAL6 = 22 << 3, 
    LOG_LOCAL7 = 23 << 3, 
    LOG_LPR = 6 << 3,     
    LOG_MAIL = 2 << 3,    
    LOG_NEWS = 7 << 3,    
    LOG_SYSLOG = 5 << 3,  
    LOG_USER = 1 << 3,    
    LOG_UUCP = 8 << 3,    
};

class NEFORCE_API syslog_sink final : public log_sink {
private:
    string ident_;             
    syslog_facility facility_; 
    bool opened_{false};       
 
    void ensure_open();
 
public:
    explicit syslog_sink(string ident = "", syslog_facility facility = syslog_facility::LOG_USER);
 
    ~syslog_sink() override;
 
    syslog_sink(const syslog_sink&) = delete;
    syslog_sink& operator=(const syslog_sink&) = delete;

    void log(const log_event& event) override;

    void flush() override;
};
 
#endif
 // Logging
 
NEFORCE_END_NAMESPACE__
#endif // NEFORCE_LOGGING_LOG_SINK_HPP__