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Feature request: New level option

See original GitHub issue

Thanks for providing this fantastic module.

Would be great to know if is possible to consider a new level option in order to segregate logs per level. Like in the standard Winston File transport:

new transports.File({ filename: 'error.log', level: 'error' })

Thank you!

Issue Analytics

State:
Created 4 years ago
Reactions:1
Comments:5 (3 by maintainers)

Top GitHub Comments

3reactions

mattberthercommented, Dec 31, 2019

This should already work - please re-open if you find it does not.

var winston = require('winston');
require('winston-daily-rotate-file');

var transport = new winston.transports.DailyRotateFile({
    filename: './logs/application-%DATE%',
    level: 'error'
});

var logger = winston.createLogger({
    transports: [
        transport
    ]
});

logger.error("This will log to the winston-daily-rotate-file transport.");
logger.info("This will not log to the winston-daily-rotate-file transport.");

0reactions

mattberthercommented, May 12, 2020

I must be missing something here - the following code works as expected here. Can you please try this and let me know if you see similar results?

~/projects/winstonjs/winston-daily-rotate-file master*
❯ cat level-test.js
var winston = require('winston');
require('winston-daily-rotate-file');

const dailyErrors = new winston.transports.DailyRotateFile({
    level: 'error',
    filename: 'errors-%DATE%.log',
    format: winston.format.combine(winston.format.timestamp({
        format: 'MM/DD/YYYY HH:mm:ss'
    }), winston.format.errors({
        stack: true
    }), winston.format.printf(function(info) {
        return `${info.timestamp} ${info.level}: ${info.message}\n${info.stack}`;
    }))
});

const logger = winston.createLogger({
    transports: [dailyErrors]
});

logger.error("This will log to the winston-daily-rotate-file transport.", new Error('testing'));
logger.info("This will not log to the winston-daily-rotate-file transport.");

~/projects/winstonjs/winston-daily-rotate-file master*
❯ rm errors-2020-05-12.log&& node level-test.js

~/projects/winstonjs/winston-daily-rotate-file master*
❯ cat errors-2020-05-12.log
05/12/2020 17:26:31 error: This will log to the winston-daily-rotate-file transport.testing
Error: testing
    at Object.<anonymous> (/Users/matt/projects/winstonjs/winston-daily-rotate-file/test.js:22:75)
    at Module._compile (internal/modules/cjs/loader.js:689:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:700:10)
    at Module.load (internal/modules/cjs/loader.js:599:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:538:12)
    at Function.Module._load (internal/modules/cjs/loader.js:530:3)
    at Function.Module.runMain (internal/modules/cjs/loader.js:742:12)
    at startup (internal/bootstrap/node.js:283:19)
    at bootstrapNodeJSCore (internal/bootstrap/node.js:743:3)

~/projects/winstonjs/winston-daily-rotate-file master*
❯