mirror of https://github.com/nomic-ai/gpt4all
Implemented logging mechanism (#785)
parent
3da205fb2e
commit
c8794eac2a
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#include "logger.h"
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#include <QFile>
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#include <QDebug>
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#include <QStandardPaths>
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#include <QDateTime>
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class MyLogger: public Logger { };
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Q_GLOBAL_STATIC(MyLogger, loggerInstance)
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Logger *Logger::globalInstance()
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{
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return loggerInstance();
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}
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Logger::Logger()
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{
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// Get log file dir
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auto dir = QStandardPaths::writableLocation(QStandardPaths::AppLocalDataLocation);
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// Remove old log file
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QFile::remove(dir+"/log-prev.txt");
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QFile::rename(dir+"/log.txt", dir+"/log-prev.txt");
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// Open new log file
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m_file.setFileName(dir+"/log.txt");
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if (!m_file.open(QIODevice::NewOnly | QIODevice::WriteOnly | QIODevice::Text)) {
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qWarning() << "Failed to open log file, logging to stdout...";
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m_file.open(stdout, QIODevice::WriteOnly | QIODevice::Text);
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}
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// On success, install message handler
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qInstallMessageHandler(Logger::messageHandler);
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}
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void Logger::messageHandler(QtMsgType type, const QMessageLogContext &, const QString &msg)
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{
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auto logger = globalInstance();
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// Get message type as string
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QString typeString;
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switch (type) {
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case QtDebugMsg:
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typeString = "Debug";
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break;
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case QtInfoMsg:
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typeString = "Info";
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break;
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case QtWarningMsg:
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typeString = "Warning";
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break;
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case QtCriticalMsg:
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typeString = "Critical";
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break;
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case QtFatalMsg:
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typeString = "Fatal";
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break;
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default:
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typeString = "???";
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}
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// Get time and date
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auto timestamp = QDateTime::currentDateTime().toString();
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// Write message
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logger->m_file.write(QString("[%1] (%2): %4\n").arg(typeString, timestamp, msg).toStdString().c_str());
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logger->m_file.flush();
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}
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@ -0,0 +1,18 @@
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#ifndef LOGGER_H
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#define LOGGER_H
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#include <QFile>
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class Logger
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{
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QFile m_file;
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static void messageHandler(QtMsgType type, const QMessageLogContext &context, const QString &msg);
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public:
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static Logger *globalInstance();
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explicit Logger();
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friend class MyLogger;
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};
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#endif // LOGGER_H
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