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node-fs

  1. 1. Bruno Pedro 30 January 2013 BarcelonaJS node-fs http://www.flickr.com/photos/dippy_duck/4562866718
  2. 2. Bruno Pedro Web and Cloud Computing Technologist with over ten years’ experience. CTO of Nubera, the company behind GetApp and CloudWork. http://brunopedro.com/
  3. 3. Summary • Why node-fs? • Polymorphic approach • Who’s using it? • Future plans • Questions
  4. 4. Why node-fs? • recursively creating directories is a common problem • different libraries and npm packages • none of them was simple and easy to use
  5. 5. The solution • simple and easy to use library • augments fs functionality • polymorphic approach • available as npm package • should be part of node’s core!
  6. 6. Polymorphic approach • Function overloading fs +mkdir() +mkdirSync() node-fs +mkdir() +mkdirSync()
  7. 7. Polymorphic approach • Original fs functions fs.mkdir  =  function  (path,  mode,  callback) fs.mkdirSync  =  function  (path,  mode)
  8. 8. Polymorphic approach • Ad-hoc polymorphism fs.mkdir  =  function  (path,  mode,  recursive,  callback) fs.mkdirSync  =  function  (path,  mode,  recursive)
  9. 9. Example usage $  npm  install  node-­‐fs
  10. 10. Example usage var  fs  =  require('node-­‐fs');   // //  Example  with  recursion  -­‐-­‐  notice  the  parameter //  right  before  the  callback  function. // fs.mkdir('/tmp/example_dir/first/second',  0777,  true,  function  (err)  {    if  (err)  {        console.log(err);    }  else  {        console.log('Directory  created');    } });   // //  Synchronous  example  with  recursion. // fs.mkdirSync('/tmp/example_sync/first/second',  0777,  true);
  11. 11. Who’s using it? • Alibaba.com • Digital Repository of Ireland • VirtuOz
  12. 12. Future plans • Add more fs operations • unlink, rmdir, chmod, chown, [lf]*stat • node-pfs: parallel fs operations • Wanna help? Fork node-fs!
  13. 13. Questions? Thank you!

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