Function PrepareToOpenLog

library/cpp/logger/global/common.cpp:11–23

    }

    TString PrepareToOpenLog(TString logType, const int logLevel, const bool rotation, const bool startAsDaemon) {
        Y_ENSURE(logLevel >= 0 && logLevel <= (int)LOG_MAX_PRIORITY, "Incorrect log level");

        if (rotation && TFsPath(logType).Exists()) {
            TString newPath = Sprintf("%s_%s_%" PRIu64, logType.data(), NLoggingImpl::GetLocalTimeSSimple().data(), static_cast<ui64>(Now().MicroSeconds()));
            TFsPath(logType).RenameTo(newPath);
        }
        if (startAsDaemon && (logType == "console"sv || logType == "cout"sv || logType == "cerr"sv)) {
            logType = "null";
        }

        return logType;
    }
}

bool TLogFilter::CheckLoggingContext(TLog& log, const TLogRecordContext& context) {