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#pragma once
#include "priority.h"
#include <util/generic/noncopyable.h>
#include <cstddef>
struct TLogRecord;
// NOTE: be aware that all `TLogBackend`s are registred in singleton.
class TLogBackend: public TNonCopyable {
public:
TLogBackend() noexcept;
virtual ~TLogBackend();
virtual void WriteData(const TLogRecord& rec) = 0;
virtual void ReopenLog() = 0;
// Does not guarantee consistency with previous WriteData() calls:
// log entries could be written to the new (reopened) log file due to
// buffering effects.
virtual void ReopenLogNoFlush();
virtual ELogPriority FiltrationLevel() const;
static void ReopenAllBackends(bool flush = true);
virtual size_t QueueSize() const;
};
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