Delphi DLL

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 DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, DtObj, Rest, AuthAzureStorage, Xml, CkDateTime;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
rest: HCkRest;
bTls: Boolean;
port: Integer;
bAutoReconnect: Boolean;
azAuth: HCkAuthAzureStorage;
responseStr: PWideChar;
xml: HCkXml;
lastSyncTimeStr: PWideChar;
dateTime: HCkDateTime;
bLocalTime: Boolean;
dt: HCkDtObj;

begin
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.

rest := CkRest_Create();

// Connect to the Azure Storage Blob Service
bTls := True;
port := 443;
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 := CkRest_Connect(rest,'chilkat-secondary.blob.core.windows.net',port,bTls,bAutoReconnect);
if (success = False) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

// Provide Azure Cloud credentials for the REST call.
azAuth := CkAuthAzureStorage_Create();
CkAuthAzureStorage_putAccessKey(azAuth,'AZURE_ACCESS_KEY');
// The account name used here should match the 1st part of the domain passed in the call to Connect (above).
CkAuthAzureStorage_putAccount(azAuth,'chilkat');
CkAuthAzureStorage_putScheme(azAuth,'SharedKey');
CkAuthAzureStorage_putService(azAuth,'Blob');
// This causes the "x-ms-version: 2021-08-06" header to be automatically added.
CkAuthAzureStorage_putXMsVersion(azAuth,'2021-08-06');
success := CkRest_SetAuthAzureStorage(rest,azAuth);

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

responseStr := CkRest__fullRequestNoBody(rest,'GET','/?restype=service&comp=stats');
if (CkRest_getLastMethodSuccess(rest) = False) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

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

// Load the XML response for parsing.
// An example of the response XML is shown below.
xml := CkXml_Create();
success := CkXml_LoadXml(xml,responseStr);

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

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

Memo1.Lines.Add('Status = ' + CkXml__chilkatPath(xml,'GeoReplication|Status|*'));
lastSyncTimeStr := CkXml__chilkatPath(xml,'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 := CkDateTime_Create();
success := CkDateTime_SetFromRfc822(dateTime,lastSyncTimeStr);

// For example:
bLocalTime := True;
dt := CkDtObj_Create();
CkDateTime_ToDtObj(dateTime,bLocalTime,dt);

Memo1.Lines.Add(IntToStr(CkDtObj_getYear(dt)) + '/' + IntToStr(CkDtObj_getMonth(dt)) + '/' + IntToStr(CkDtObj_getDay(dt)));

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

CkRest_Dispose(rest);
CkAuthAzureStorage_Dispose(azAuth);
CkXml_Dispose(xml);
CkDateTime_Dispose(dateTime);
CkDtObj_Dispose(dt);

end;