(JavaScript) Azure Storage: Get Blob Service Stats

Azure Storage Blob Service REST API: Sample code to get Blob Service Stats

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.

var success = false;

// Azure Blob Service Example: Get Blob Service Stats

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

var rest = new CkRest();

// Connect to the Azure Storage Blob Service
var bTls = true;
var port = 443;
var bAutoReconnect = true;
// In this example, the storage account name is "chilkat".
// ---- IMPORTANT ----
// The "-secondary" suffix is required.
// This requires an Azure storage account with replication set to "Read-access geo-redundant storage (RA-GRS)"
// If you made the change just prior to testing this example, you'll need to give it time for the 
// DNS to become available..  
// ---- IMPORTANT ----
success = rest.Connect("chilkat-secondary.blob.core.windows.net",port,bTls,bAutoReconnect);
if (success == false) {
    console.log(rest.LastErrorText);
    return;
}

// Provide Azure Cloud credentials for the REST call.
var azAuth = new CkAuthAzureStorage();
azAuth.AccessKey = "AZURE_ACCESS_KEY";
// The account name used here should match the 1st part of the domain passed in the call to Connect (above).
azAuth.Account = "chilkat";
azAuth.Scheme = "SharedKey";
azAuth.Service = "Blob";
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
azAuth.XMsVersion = "2021-08-06";
success = rest.SetAuthAzureStorage(azAuth);

// Note: The application does not need to explicitly set the following
// headers: x-ms-date, Authorization.  These headers
// are automatically set by Chilkat.

var responseStr = rest.FullRequestNoBody("GET","/?restype=service&comp=stats");
if (rest.LastMethodSuccess == false) {
    console.log(rest.LastErrorText);
    return;
}

// When successful, the Azure Storage service will respond with a 200 response code,
// with an XML body.  
if (rest.ResponseStatusCode !== 200) {
    // Examine the request/response to see what happened.
    console.log("response status code = " + rest.ResponseStatusCode);
    console.log("response status text = " + rest.ResponseStatusText);
    console.log("response header: " + rest.ResponseHeader);
    console.log("response body (if any): " + responseStr);
    console.log("---");
    console.log("LastRequestStartLine: " + rest.LastRequestStartLine);
    console.log("LastRequestHeader: " + rest.LastRequestHeader);
    return;
}

// Load the XML response for parsing.
// An example of the response XML is shown below.
var xml = new CkXml();
success = xml.LoadXml(responseStr);

console.log(xml.GetXml());

// Use the ChilkatPath method to get various pieces of information out
// of the XML.  For example:

console.log("Status = " + xml.ChilkatPath("GeoReplication|Status|*"));
var lastSyncTimeStr = xml.ChilkatPath("GeoReplication|LastSyncTime|*");
console.log("LastSyncTime = " + lastSyncTimeStr);

// The date/time string can be loaded into a CkDateTime object for 
// access to individual parts, or conversion to other formats.
var dateTime = new CkDateTime();
success = dateTime.SetFromRfc822(lastSyncTimeStr);

// For example:
var bLocalTime = true;
var dt = new CkDtObj();
dateTime.ToDtObj(bLocalTime,dt);

console.log(dt.Year + "/" + dt.Month + "/" + dt.Day);

// <StorageServiceStats>
//     <GeoReplication>
//         <Status>live</Status>
//         <LastSyncTime>Tue, 03 May 2016 23:57:54 GMT</LastSyncTime>
//     </GeoReplication>
// </StorageServiceStats>