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core.js
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core.js
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/*
* core.js: Core functions for accessing Rackspace CloudFiles
*
* (C) 2010 Charlie Robbins
* MIT LICENSE
*
*/
require.paths.unshift(require('path').join(__dirname, '..'));
var http = require('http'),
fs = require('fs'),
path = require('path'),
eyes = require('eyes'),
url = require('url'),
request = require('request'),
config = require('./config'),
utils = require('./utils'),
cloudfiles = require('cloudfiles');
var authUrl = 'auth.api.rackspacecloud.com';
//
// function createClient (options)
// Creates a new instance of a Loggly client.
//
exports.createClient = function (options) {
return new Cloudfiles(config.createConfig(options));
};
var Cloudfiles = exports.Cloudfiles = function (config) {
this.config = config;
this.authorized = false;
};
//
// Authenticates node-cloudfiles with the options specified
// in the Config object for this instance
//
Cloudfiles.prototype.setAuth = function (callback) {
var authOptions = {
uri: 'https://' + authUrl + '/v1.0',
headers: {
'HOST': authUrl,
'X-AUTH-USER': this.config.auth.username,
'X-AUTH-KEY': this.config.auth.apiKey
}
};
var self = this;
utils.statOrMkdir(this.config.cache.path, function () {
request(authOptions, function (err, res, body) {
if (err) return callback(err);
self.authorized = true;
self.config.serverUrl = res.headers['x-server-management-url'];
self.config.storageUrl = res.headers['x-storage-url'];
self.config.cdnUrl = res.headers['x-cdn-management-url'];
self.config.authToken = res.headers['x-auth-token'];
self.config.storageToken = res.headers['x-storage-token']
callback(null, res, self.config);
});
});
};
Cloudfiles.prototype.getContainers = function () {
var self = this,
args = Array.prototype.slice.call(arguments),
callback = (typeof(args[args.length - 1]) === 'function') && args.pop(),
isCdn = args.length > 0 && (typeof(args[args.length - 1]) === 'boolean') && args.pop(),
url = isCdn ? this.cdnUrl(true) : this.storageUrl(true);
utils.rackspace(url, this, callback, function (body) {
var results = [], containers = JSON.parse(body);
containers.forEach(function (container) {
results.push(new (cloudfiles.Container)(self, container));
});
callback(null, results);
});
};
Cloudfiles.prototype.getContainer = function () {
var self = this,
args = Array.prototype.slice.call(arguments),
callback = (typeof(args[args.length - 1]) === 'function') && args.pop(),
isCdn = args.length > 0 && (typeof(args[args.length - 1]) === 'boolean') && args.pop(),
containerName = args.pop(),
url = isCdn ? this.cdnUrl(containerName) : this.storageUrl(containerName);
utils.rackspace('HEAD', url, this, callback, function (body, res) {
var container = {
name: containerName,
count: new Number(res.headers['x-container-object-count']),
bytes: new Number(res.headers['x-container-bytes-used'])
};
callback(null, new (cloudfiles.Container)(self, container));
});
};
Cloudfiles.prototype.createContainer = function (container, callback) {
var self = this;
utils.rackspace('PUT', this.storageUrl(container.name), this, callback, function (body, res) {
if (typeof container.cdnEnabled !== 'undefined' && container.cdnEnabled) {
container.ttl = container.ttl || self.config.cdn.ttl;
container.logRetention = container.logRetention || self.config.cdn.logRetention;
var cdnOptions = {
uri: self.cdnUrl(container.name),
method: 'PUT',
client: self,
headers: {
'X-TTL': container.ttl,
'X-LOG-RETENTION': container.logRetention
}
};
utils.rackspace(cdnOptions, callback, function (body, res) {
container.cdnUri = res.headers['x-cdn-uri'];
callback(null, new (cloudfiles.Container)(self, container));
});
}
else {
callback(null, new (cloudfiles.Container)(self, container));
}
});
};
Cloudfiles.prototype.destroyContainer = function (container, callback) {
var self = this;
this.getFiles(container, function (err, files) {
if (err) return callback(err);
function destroy () {
utils.rackspace('DELETE', self.storageUrl(container), self, callback, function (body, res) {
callback(null, true);
});
}
if (files.length === 0) return destroy();
files.forEach(function (file) {
file.destroy(function (err, deleted) {
if (file === files[files.length - 1]) destroy();
});
});
});
};
Cloudfiles.prototype.getFiles = function (container, download, callback) {
var self = this;
// Download is optional argument
// And can be only: true, false, [array of files]
// Also download can be omitted: (...).getFiles(container, callback);
// In this case second argument will be a function
if (typeof download === 'function' && !(download instanceof RegExp)) {
callback = download;
download = false;
}
utils.rackspace(this.storageUrl(container, true), this, callback, function (body) {
var files = JSON.parse(body);
// If download == false or wasn't defined
if (!download) {
var results = files.map(function (file) {
file.container = container;
return new (cloudfiles.StorageObject)(self, file);
});
callback(null, results);
return;
}
var batch;
if (download instanceof RegExp || download == true) {
// If download == true
// Download all files
if (download !== true) {
files = files.filter(function (file) {
return download.test(file.name);
});
}
// Create a batch
batch = files.map(function (file) {
return function(callback) {
self.getFile(container, file.name, callback);
}
});
} else if (Array.isArray(download)) {
// Go through all files that we've asked to download
batch = download.map(function(file) {
var exists = files.some(function(item) {
return item.name == file
});
// If file exists - get it
// If not report about error
return exists ?
function (callback) {
self.getFile(container, file, callback);
} :
function (callback) {
callback(Error('File : ' + file + ' doesn\'t exists'));
};
});
} else {
callback(Error('"download" argument can be only boolean, array or regexp'));
}
// Run batch
utils.runBatch(batch, callback);
});
};
Cloudfiles.prototype.getFile = function (container, filename, callback) {
var self = this, containerPath = path.join(this.config.cache.path, container);
utils.statOrMkdir(containerPath, function () {
var cachePath = path.join(containerPath, filename);
fileStream = fs.createWriteStream(cachePath);
var options = {
method: 'GET',
client: self,
uri: self.storageUrl(container, filename),
responseBodyStream: fileStream
};
utils.rackspace(options, callback, function (body, res) {
var file = {
content_type: res.headers['content-type'],
bytes: res.headers['content-length'],
hash: res.headers['etag'],
last_modified: res.headers['last-modified'],
local: cachePath,
container: container,
name: filename
};
callback(null, new (cloudfiles.StorageObject)(self, file));
});
});
};
Cloudfiles.prototype.addFile = function (container, file, local, callback) {
var options = {
method: 'PUT',
client: this,
uri: this.storageUrl(container, file),
filename: local,
contentType: cloudfiles.mime.type(file)
};
utils.rackspaceCurl(options, callback, function (body, res) {
callback(null, true);
});
};
Cloudfiles.prototype.destroyFile = function (container, file, callback) {
utils.rackspace('DELETE', this.storageUrl(container, file), this, function (body, res) {
callback(null, true);
});
};
//
// function storageUrl (path, to, resource)
// Helper method that concats the string params into a url
// to request against the authenticated node-cloudfiles
// storageUrl.
//
Cloudfiles.prototype.storageUrl = function () {
var args = Array.prototype.slice.call(arguments),
json = (typeof(args[args.length - 1]) === 'boolean') && args.pop();
return [this.config.storageUrl].concat(args).join('/') + (json ? '?format=json' : '');
};
//
// function cdnUrl (path, to, resource)
// Helper method that concats the string params into a url
// to request against the authenticated node-cloudfiles cdnUrl.
//
Cloudfiles.prototype.cdnUrl = function () {
var args = Array.prototype.slice.call(arguments),
json = (typeof(args[args.length - 1]) === 'boolean') && args.pop();
return [this.config.cdnUrl].concat(args).join('/') + (json ? '?format=json' : '');
};