| 1 |
|
| 2 | exports.async = function (fn, cb) {
|
| 3 |
|
| 4 | var tries = 3;
|
| 5 |
|
| 6 | (function next () {
|
| 7 | fn(function (err, res) {
|
| 8 | if (!err) { return cb(null, res); }
|
| 9 | if (err.code !== 'EEXIST') { return cb(err); }
|
| 10 |
|
| 11 | if (--tries === 0) {
|
| 12 | cb(new Error('Failed to find unique name'));
|
| 13 | } else {
|
| 14 | next();
|
| 15 | }
|
| 16 | });
|
| 17 | }());
|
| 18 |
|
| 19 | };
|
| 20 |
|
| 21 | exports.sync = function (fn) {
|
| 22 |
|
| 23 | var tries = 3;
|
| 24 |
|
| 25 | while (--tries) {
|
| 26 |
|
| 27 | try {
|
| 28 | res = fn();
|
| 29 | } catch (err) {
|
| 30 | if (err.code === 'EEXIST') {
|
| 31 | continue ;
|
| 32 | } else {
|
| 33 | throw err;
|
| 34 | }
|
| 35 | }
|
| 36 |
|
| 37 | return res;
|
| 38 | }
|
| 39 |
|
| 40 | throw new Error('Failed to find unique name');
|
| 41 | };
|