public
Created

  • Download Gist
gistfile1.js
JavaScript
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54
var azure = require('azure');
var qs = require('querystring');
 
function insert(item, user, request) {
var accountName = '<replace with your storage account name>';
var accountKey = '<replace with your storage account key>';
var host = accountName + '.blob.core.windows.net';
var canonicalizedResource = '/' + item.containerName + '/' + item.resourceName;
//Must be lowercase
item.containerName = item.containerName.toLowerCase();
//Create the container if it does not exist
//we will use public read access for the blobs and will use a SAS to upload
var blobService = azure.createBlobService(accountName, accountKey, host);
blobService.createContainerIfNotExists(item.containerName, {publicAccessLevel : 'blob'}, function(error){
if(!error){
// Container exists now define a policy that provides write access
// that starts immediately and expires in 5 mins
var sharedAccessPolicy = {
AccessPolicy:{
Permissions: azure.Constants.BlobConstants.SharedAccessPermissions.WRITE,
//Start: //use for start time in future, beware of server time skew
Expiry: formatDate(new Date(new Date().getTime() + 5 * 60 * 1000)) //5 minutes from now
}
};
//Generate the SAS for your BLOB
var sasQueryString = getSAS(accountName,
accountKey,
canonicalizedResource,
azure.Constants.BlobConstants.ResourceTypes.BLOB,
sharedAccessPolicy);
//full path for resource with sas
item.sas = 'https://' + host + canonicalizedResource + '?' + sasQueryString;
}
else{
console.error(error);
}
request.execute();
});
}
 
function getSAS(accountName, accountKey, path, resourceType, sharedAccessPolicy) {
return qs.encode(new azure.SharedAccessSignature(accountName, accountKey)
.generateSignedQueryString(path, {}, resourceType, sharedAccessPolicy));
}
 
function formatDate(date){
var raw = date.toJSON();
//blob service does not like milliseconds on the end of the time so strip
return raw.substr(0, raw.lastIndexOf('.')) + 'Z';
}

Please sign in to comment on this gist.

Something went wrong with that request. Please try again.