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Rotate log file #400

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Rotate log file #400

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14 changes: 14 additions & 0 deletions src/controller/logging.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -38,6 +38,19 @@
namespace
{

constexpr qint64 MAX_LOG_FILE_SIZE = 5 * 1024 * 1024; // 5 MB

void rotateLogFileIfTooLarge(const QString& logFilePath)
{
QFile existingLogFile {logFilePath};
if (existingLogFile.size() <= MAX_LOG_FILE_SIZE) {
return;
}
const auto rotatedLogFilePath = logFilePath + QStringLiteral(".1");
QFile::remove(rotatedLogFilePath);
existingLogFile.rename(rotatedLogFilePath);
}

bool openLogFile(QFile& logFile)
{
const auto logFilePath = QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation);
Expand All @@ -52,6 +65,7 @@ bool openLogFile(QFile& logFile)
return false;
}
logFile.setFileName(logFileDir.filePath(QStringLiteral("%1.log").arg(qApp->applicationName())));
rotateLogFileIfTooLarge(logFile.fileName());
if (!logFile.open(QIODevice::Append | QIODevice::Text)) {
std::cerr << "Unable to open logfile '" << logFile.fileName().toStdString() << '\''
<< std::endl;
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