rackit

Rackit

Rackit is a module for managing large collections of files on Rackspace Cloud Files. Rackit automatically creates containers as needed, and will seamlessly reauthenticate if your API key expires. Rackit also supports the generation of temporary, time-limited file URLs.

Cloud Files has a recommended limit of 50,000 files per container. Rackit knows this, and will automatically create new containers as necessary.

With Rackit, you specify a container prefix, such as 'file'. Then, Rackit will create containers ['file0', 'file1', ...] as necessary.

For security, privacy, and ease, Rackit stores files on the cloud with random names, which it returns to you.

Install

$ npm install rackit

Usage

var rackit = require('rackit');

// Initialize with your account information
rackit.init({
    'user' : '<your Rackspace username>',
    'key' : '<your Rackspace API key>'
}, function(err) {
    // Add a local file to the cloud
    rackit.add(__dirname + '/image.jpg', function(err, cloudPath) {
        // Get the CDN URI of the file
        console.log(rackit.getURI(cloudPath));
    });
});

Optionally, you may create your own Rackit instance. This is necessary if you are accessing multiple Cloud File accounts.

var Rackit = require('rackit').Rackit;
var myRackit = new Rackit({
    'user' : '<your Rackspace username>',
    'key' : '<your Rackspace API key>'
});

myRackit.init(function(err) {
    // Add a local file to the cloud
    myRackit.add(__dirname + '/image.jpg', function(err, cloudPath) {
        // Get the CDN URI of the file
        console.log(myRackit.getURI(cloudPath));
    });
});

Options

When initializing Rackit, here are the options and defaults:

{
    user : '', // Your Rackspace username
	key : '', // Your Rackspace API key
	prefix : 'dev', // The prefix for your Cloud Files containers
	baseURI : 'https://auth.api.rackspacecloud.com/v1.0', // The API entry point - may change based on your country
	tempURLKey : null, // A secret for generating temporary URLs
	useSNET : false,
	useCDN : true,
	useSSL : true,
	verbose : false, // If set to true, log messages will be generated
	logger : console.log // Function to receive log messages
}

    

Methods

#add(localPath, [options,] callback)

• localPath - A path to the file to upload
• options - A hash of additional options
  • type - A MIME type (e.g. 'Image/JPEG'). If not specified, mime-magic is used.
  • filename - What to name the file on Cloud Files. Omit to have Rackit generate a UID.
  • meta - A hash of additional metadata to store along with the file.
  • headers - A hash of additional headers to send.
• callback(err, cloudPath) - returns information about the location of the file. In the form 'container/file-name' to be used as input to other methods.

Uploads a file to the cloud. The uploaded file will be given a random 24-character file name.

#get(cloudPath, localPath, callback)

• cloudPath - of the form 'container/file-name'
• localPath - where to put the downloaded file
• callback(err)

Downloads a file from the cloud.

#remove(cloudPath, callback)

Permanently deletes a file from the cloud.

#setMeta(cloudPath, meta, callback)

Upserts the metadata for the specified cloud file.

#getURI(cloudPath [, ttl])

Returns a URI for a given file. If the ttl parameter is omitted, then a CDN URI will be returned (if the container is CDN enabled). If ttl is specified, a temporary URI will be given which is valid for ttl seconds.

TODO

• Finish writing test cases

** theoretical limit