(Delphi ActiveX) Azure Storage: Set Blob Service Properties

Azure Storage Blob Service REST API: Sample code to set a blob's service properties.

Chilkat for Delphi Downloads Chilkat ActiveX DLL for Delphi Chilkat non-ActiveX DLL for Delphi * The examples here use the ActiveX DLL.

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
rest: TChilkatRest;
bTls: Integer;
port: Integer;
bAutoReconnect: Integer;
success: Integer;
azAuth: TChilkatAuthAzureStorage;
xml: TChilkatXml;
xLogging: IChilkatXml;
xRetension: IChilkatXml;
responseStr: WideString;

begin
// Azure Blob Service Example: Set Blob Service Properties
// See also: https://msdn.microsoft.com/en-us/library/azure/hh452235.aspx

// 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".
success := rest.Connect('chilkat.blob.core.windows.net',port,bTls,bAutoReconnect);
if (success <> 1) 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.

// This example will set logging properties.  The XML body of the request
// will look like this:

// <?xml version="1.0" encoding="utf-8"?>
// <StorageServiceProperties>
//     <Logging>
//         <Version>version-number</Version>
//         <Delete>true|false</Delete>
//         <Read>true|false</Read>
//         <Write>true|false</Write>
//         <RetentionPolicy>
//             <Enabled>true|false</Enabled>
//             <Days>number-of-days</Days>
//         </RetentionPolicy>
//     </Logging>

// Build the request:
xml := TChilkatXml.Create(Self);
xml.Tag := 'StorageServiceProperties';
xLogging := xml.NewChild('Logging','');
xLogging.NewChild2('Version','1.0');
xLogging.NewChild2('Delete','true');
xLogging.NewChild2('Read','true');
xLogging.NewChild2('Write','true');
xRetension := xLogging.NewChild('RetentionPolicy','');
xRetension.NewChild2('Enabled','true');
xRetension.NewChild2('Days','7');

// The expected response is a 202 response status code with no response body.
responseStr := rest.FullRequestString('PUT','/?restype=service&comp=properties',xml.GetXml());
if (rest.LastMethodSuccess <> 1) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// When successful, the Azure Storage service will respond with a 202 response code,
// with no response body.
if (rest.ResponseStatusCode <> 202) 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;

Memo1.Lines.Add('Success: Blob service properties updated!');
end;