On unix, forced to write in file to trigger rolling

[lblackwings]

Actually I have this :

var loaderErrorLogMaxSize = 10485760;
var rollLoaderError = function () {
  var roller = new streamroller.RollingFileStream('./log/loader-error.log', loaderErrorLogMaxSize, 10);
  roller.end(function () {
        logger.info('Loader -', 'loader-error.log checked for roll.');
  });
};

This works on windows and each time I invoke this code, the file is normally rolled.
But on unix I have to add a write('') call to trigger the roll.

var loaderErrorLogMaxSize = 10485760;
var rollLoaderError = function () {
    var roller = new streamroller.RollingFileStream('./log/loader-error.log', loaderErrorLogMaxSize, 10);
    roller.write('');
    roller.end(function () {
        logger.info('Loader -', 'loader-error.log checked for roll.');
    });
};

I use this function in the callback of a fs.watch because the file is managed by pm2 and cannot roll by itself.
So each time this file change, I check the size then I invoke the rollLaoderError function then I have to write something in the file...

[lamweili]

Seems like a Node.js OS implementation issue.
I'm not so sure if we should fiddle with that.

You can always do the following API for both OSes:

writable.end([chunk[, encoding]][, callback])
https://nodejs.org/api/stream.html#writableendchunk-encoding-callback

=  var loaderErrorLogMaxSize = 10485760;
=  var rollLoaderError = function () {
=      var roller = new streamroller.RollingFileStream('./log/loader-error.log', loaderErrorLogMaxSize, 10);
-      roller.write('');
-      roller.end(function () {
+      roller.end('', function () {
=          logger.info('Loader -', 'loader-error.log checked for roll.');
=      });
=  };