Is it possible to rotate the file weekly & monthly?

[ckmax]

Hi,

I read through the documentation as well as the issues page and was unable to find a clear answer to this. How do you specify here the time interval in which the file rotates?

logger.add(logger.transports.DailyRotateFile, {
filename: '../NTI.log',
timestamp: true,
datePattern: 'yyyy-MM-dd.',
prepend: true,
maxSize: '10m',
level: process.env.ENV === 'development' ? 'debug' : 'info'
});

Also,

The new file that gets created since NTI.log is over 10m in size has a weird name : 'NTI.log.yyyy-11-We.' What am I doing wrong here?

Any input would help. Thanks a lot.

[mattberther]

Some long-overdue refactoring of the transport has occurred. A PR is available at #107. Also, a pre-release version has been published to npm. Please npm install [email protected].

The option to set for monthly rotation is: datePattern: 'yyyy-MM'

Please respond back and let us know if the 2.0.0-beta isnt working for you.

[ckmax]

i used the datePattern: 'YYYY-MM' and it is rotating every few hours. Can you explain this behavior?

Is there some documentation on the usage of the datePattern attribute?

EDIT:
Ok I see why this is happening, it was because I was restarting the app a few times for other things. Is there an option for it to not create new files after restarting? and just start logging from the latest rolled over file?

[mattberther]

@ckmax First, please confirm that you're running the 2.0.0-beta version. The documentation for the datePattern property is here in the PR: 407f0cb#diff-04c6e90faac2675aa89e2176d2eec7d8R17

Also, I am unable to reproduce the issue you're describing. A small node script like the one below appends to the same file no matter how many times I run it.

var winston = require('winston');
require('winston-daily-rotate-file');
var randomString = require('./test/random-string');

var transport = new winston.transports.DailyRotateFile({
    filename: 'log',
    datePattern: 'YYYY-MM',
    level: 'info'
});

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

logger.info(randomString(1056));
logger.info(randomString(1056));

If you continue to see this behavior, please respond with the minimal amount of code necessary to reproduce the issue.

Thanks!