library/cpp/logger/global/common.cpp


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#include "common.h"
 
#include <util/generic/yexception.h>

namespace NLoggingImpl { 
    TString GetLocalTimeSSimple() {
        struct tm tm; 
        return Strftime("%b%d_%H%M%S", Now().LocalTime(&tm)); 
    } 

    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) {
    return context.Priority <= log.FiltrationLevel();
}

TSimpleSharedPtr<TLogElement> TLogFilter::StartRecord(TLog& logger, const TLogRecordContext& context, TSimpleSharedPtr<TLogElement> earlier) { 
    if (earlier) 
        return earlier; 
    TSimpleSharedPtr<TLogElement> result(new TLogElement(&logger)); 
    *result << context.Priority; 
    return result; 
}