cron-file-cleaner

cron-file-cleaner is a nodejs module for removing old files periodically.

Install

npm install cron-file-cleaner

Basic example

A basic example can look like this:

var FileCleaner = require('cron-file-cleaner').FileCleaner;

var fileWatcher = new FileCleaner('/path/to/folder/', 600000,  '00 */15 * * * *', {
  start: true
});

This would scan the directory /path/to/folder/ every 15 minutes and deletes every containing file that is older than 10 minutes (= 600000 milliseconds).

Usage

cron-file-cleaner scans a given folder periodically and deletes all files that are older than the given threshold. The interval for scanning the folder can be set with a crontab syntax.

var FileCleaner = require('cron-file-cleaner').FileCleaner;

var fileWatcher = new FileCleaner(path, threshold, interval, options);

The parameters are:

• path: The full path to the folder to watch [REQUIRED]
• threshold: Threshold in milliseconds. Every file that is older will be deleted [REQUIRED]
• interval: The interval for scanning the folder given in a crontab syntax, e.g. '* 00 * * * *' [REQUIRED]
• options: A JSON object with additional options. [OPTIONAL]

The options object can have the following attributes:

• start: Boolean, default is false. In that case you must use fileWatcher.start()
• recursive: Boolean, default is false. If true it scans the folder recursively.
• timeField: Which time field of the files should be considered. Default 'atime', can be 'atime', 'ctime, or 'mtime'.
• timeZone: Timezone to use, default is undefined, e.g. 'America/Los_Angeles'.
• blackList: A RegEx for excluding files, default is undefined, e.g. /\.gitkeep/
• whiteList: A RegEx for including only the files with a matching name, default is undefined, e.g. /.*\.log/

Methods

If you don't set the option start to true, you need to start the process explicitly with

fileWatcher.start();

To stop the process, just run

fileWatcher.stop();

If you want to start a scan immediately ignoring the given interval you can run

fileWatcher.cleanUp();

Events

You can listen to the following events (see full example above):

• start: Will be triggered on starting the process
• stop: Will be triggered on stopping the process
• delete: Will be triggered on deleting a file
• error: Will be triggered if an error occurs

Full example

var FileCleaner = require('cron-file-cleaner').FileCleaner;

var tmpWatcher = new FileCleaner(__dirname + '/tmp_files/', 60 * 60 * 1000,  '00 */15 * * * *', {
  recursive: true,
  timeField: 'ctime'
});

tmpWatcher.on('delete', function(file){
  console.log('DELETE');
  console.log(file.name); //Name of the file
  console.log(file.folder); //folder path
  console.log(file.path); //Full path of the file
});

tmpWatcher.on('error', function(err){
  console.log('ERROR');
  console.error(err);
});

tmpWatcher.on('stop', function(info){
  console.log('STOP');
  console.log(info.path);
  console.log(info.cronTime);
});

tmpWatcher.on('start', function(info){
  console.log('START');
  console.log(info.path);
  console.log(info.cronTime);
});

tmpWatcher.start();

Tests

npm test

Coverage

npm run coverage

Contributing

In lieu of a formal styleguide, take care to maintain the existing coding style. Add tests for any new or changed functionality. Lint and test your code.

License

MIT