Delphi ActiveX

Azure Storage: Get Blob Service Stats

See more Azure Cloud Storage Examples

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

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Integer;
rest: TChilkatRest;
bTls: Integer;
port: Integer;
bAutoReconnect: Integer;
azAuth: TChilkatAuthAzureStorage;
responseStr: WideString;
xml: TChilkatXml;
lastSyncTimeStr: WideString;
dateTime: TCkDateTime;
bLocalTime: Integer;
dt: TDtObj;

begin
success := 0;

// 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.

rest := TChilkatRest.Create(Self);

// Connect to the Azure Storage Blob Service
bTls := 1;
port := 443;
bAutoReconnect := 1;
// 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 = 0) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// Provide Azure Cloud credentials for the REST call.
azAuth := TChilkatAuthAzureStorage.Create(Self);
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.ControlInterface);

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

responseStr := rest.FullRequestNoBody('GET','/?restype=service&comp=stats');
if (rest.LastMethodSuccess = 0) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// When successful, the Azure Storage service will respond with a 200 response code,
// with an XML body.  
if (rest.ResponseStatusCode <> 200) then
  begin
    // Examine the request/response to see what happened.
    Memo1.Lines.Add('response status code = ' + IntToStr(rest.ResponseStatusCode));
    Memo1.Lines.Add('response status text = ' + rest.ResponseStatusText);
    Memo1.Lines.Add('response header: ' + rest.ResponseHeader);
    Memo1.Lines.Add('response body (if any): ' + responseStr);
    Memo1.Lines.Add('---');
    Memo1.Lines.Add('LastRequestStartLine: ' + rest.LastRequestStartLine);
    Memo1.Lines.Add('LastRequestHeader: ' + rest.LastRequestHeader);
    Exit;
  end;

// Load the XML response for parsing.
// An example of the response XML is shown below.
xml := TChilkatXml.Create(Self);
success := xml.LoadXml(responseStr);

Memo1.Lines.Add(xml.GetXml());

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

Memo1.Lines.Add('Status = ' + xml.ChilkatPath('GeoReplication|Status|*'));
lastSyncTimeStr := xml.ChilkatPath('GeoReplication|LastSyncTime|*');
Memo1.Lines.Add('LastSyncTime = ' + lastSyncTimeStr);

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

// For example:
bLocalTime := 1;
dt := TDtObj.Create(Self);
dateTime.ToDtObj(bLocalTime,dt.ControlInterface);

Memo1.Lines.Add(IntToStr(dt.Year) + '/' + IntToStr(dt.Month) + '/' + IntToStr(dt.Day));

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