Je veux ajouter l'horodatage aux journaux. Quel est le meilleur moyen d'y parvenir ?
Réponses
Trop de publicités?
BittuS
Points
567
On peut faire comme ça aussi
var winston = require('winston');
const { createLogger, format, transports } = require('winston');
var config = require('../configurations/envconfig.js');
var loggerLevel = process.env.LOGGERLEVEL || config.get('LOGGERLEVEL');
var logger = winston.createLogger({
format: format.combine(
format.timestamp({
format: 'YYYY-MM-DD HH:mm:ss'
}),
format.printf(info => `${info.timestamp} ${info.level}: ${info.message}`+(info.splat!==undefined?`${info.splat}`:" "))
),
transports: [
new (winston.transports.Console)({ level: loggerLevel }),
]
});
module.exports = logger;
Steve
Points
572
J'ai pris la réponse de Biswadev et j'ai créé un objet JSON stringifié. De cette façon, si j'ai besoin de traiter les journaux plus tard, ce sera dans un format bien structuré.
const winston = require('winston');
const { createLogger, format, transports } = require('winston');
const dotenv = require('dotenv');
dotenv.config();
var logger = createLogger({
level: 'info',
format: format.combine(
format.timestamp({
format: 'YYYY-MM-DD HH:mm:ss',
}),
format.printf((info) =>
JSON.stringify({
t: info.timestamp,
l: info.level,
m: info.message,
s: info.splat !== undefined ? `${info.splat}` : '',
}) + ','
)
),
});
if (process.env.NODE_ENV !== 'PRODUCTION') {
logger.add(new transports.Console({ format: winston.format.cli() }));
// Turn these on to create logs as if it were production
// logger.add(new transports.File({ filename: 'log/output/error.log', level: 'error' }));
// logger.add(new transports.File({ filename: 'log/output/warn.log', level: 'warn' }));
// logger.add(new transports.File({ filename: 'log/output/info.log', level: 'info' }));
} else {
logger.add(new transports.File({ filename: 'log/output/error.log', level: 'error' }));
logger.add(new transports.File({ filename: 'log/output/warn.log', level: 'warn' }));
logger.add(new transports.File({ filename: 'log/output/info.log', level: 'info' }));
}
module.exports = {
logger,
};
Utilisation :
app.listen(port, () => logger.info(`app is running on port ${port}`));
Sortie :
fichier info.log :
{"t":"2020-08-06 08:02:05","l":"info","m":"app is running on port 3001","s":""},
Console :
info: app is running on port 3001