(JavaScript) How to Generate an Azure Service Bus Shared Access Signature (SAS)

Demonstrates generating and using an Azure Service Bus Shared Access Signature (SAS).

Note: This example requires Chilkat v9.5.0.65 or greater.

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

// Note: Requires Chilkat v9.5.0.65 or greater.

// This requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// -------------------------------------------------------------------
// Create a Shared Access Signature (SAS) token for Azure Service Bus.
// -------------------------------------------------------------------

var authSas = new CkAuthAzureSAS();
authSas.AccessKey = "AzureServiceBus_PrimaryKey";

// The SAS token for Service Bus will look like this:
// (The order of params will be different.  The order does not matter.)
// sig=<signature-string>&se=<expiry>&skn=<keyName>&sr=<URL-encoded-resourceURI>

// Specify the format of the string to sign.
authSas.StringToSign = "resourceURI,expiry";

// Create an expiry to 30 days in the future.
var dtExpiry = new CkDateTime();
dtExpiry.SetFromCurrentSystemTime();
dtExpiry.AddDays(30);
authSas.SetTokenParam("expiry","se",dtExpiry.GetAsUnixTimeStr(true));

// Set the skn (keyname)
// This example uses the key "RootManageSharedAccessKey".  This give full access.
// In a typical scenario, you would create a new Azure key (for the service bus)
// in the Azure portal, such that the key has limited permissions.  This would
// allow you to give the SAS token to others for specific access for some period of time.
authSas.SetTokenParam("keyName","skn","RootManageSharedAccessKey");

// Set the URL-encoded-resourceURI
var sbResourceUri = new CkStringBuilder();
sbResourceUri.Append("https://<yournamespace>.servicebus.windows.net/");
sbResourceUri.Encode("url","utf-8");
authSas.SetTokenParam("resourceURI","sr",sbResourceUri.GetAsString());

// Generate the SAS token.
var sasToken = authSas.GenerateToken();
if (authSas.LastMethodSuccess !== true) {
    console.log(authSas.LastErrorText);
    return;
}

console.log("SAS token: " + sasToken);

// Save the SAS token to a file.
// We can then use this pre-generated token for future Service Bus operations.
var fac = new CkFileAccess();
fac.WriteEntireTextFile("qa_data/tokens/serviceBusSas.txt",sasToken,"utf-8",false);