Pascal (Lazarus/Delphi)

Delete a Google Cloud Storage Bucket

See more Google Cloud Storage Examples

Demonstrates how to delete a Google Cloud Storage bucket. Pascal (Lazarus/Delphi)

program ChilkatDemo;

// Demonstrates using the Chilkat Pascal wrapper via the C bridge DLL.
// Builds as a console application under Lazarus (FPC) or Delphi.

{$IFDEF FPC}
  {$MODE DELPHI}
{$ENDIF}
{$APPTYPE CONSOLE}

uses
  {$IFDEF UNIX}
  cthreads,
  {$ENDIF}
  SysUtils,
  CkDllLoader,
  Chilkat.Http,
  Chilkat.StringBuilder;

// ---------------------------------------------------------------------------

procedure RunDemo;
var
  success: Boolean;
  sbToken: TStringBuilder;
  http: THttp;
  url: string;
  responseBody: string;
  responseCode: Integer;

begin
  success := False;

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

  //  This example uses a previously obtained access token having permission for the 
  //  scope "https://www.googleapis.com/auth/cloud-platform"

  //  In this example, Get Google Cloud Storage OAuth2 Access Token, 
  //  the service account access token was saved to a text file.  This example fetches the access token from the file..
  sbToken := TStringBuilder.Create;
  sbToken.LoadFile('qa_data/tokens/googleCloudStorageAccessToken.txt','utf-8');

  //  Send a DELETE equivalent to this curl command

  //  curl -X DELETE -H "Authorization: Bearer [OAUTH2_TOKEN]" \
  //      "https://www.googleapis.com/storage/v1/b/[BUCKET_NAME]"
  //  
  http := THttp.Create;
  http.AuthToken := sbToken.GetAsString();

  http.SetUrlVar('bucket_name','chilkat-ocean');
  url := 'https://www.googleapis.com/storage/v1/b/{$bucket_name}';

  responseBody := http.QuickDeleteStr(url);
  if (http.LastMethodSuccess = False) then
    begin
      WriteLn(http.LastErrorText);
      Exit;
    end;

  responseCode := http.LastStatus;
  if (responseCode = 401) then
    begin
      WriteLn(responseBody);
      WriteLn('If invalid credentials, then it is likely the access token expired.');
      WriteLn('Your app should automatically fetch a new access token and re-try.');
      Exit;
    end;

  //  A 204 response code indicates success..
  //  If not success, then examine the response code and response body..
  if (responseCode <> 204) then
    begin
      WriteLn('Response code: ' + responseCode);
      WriteLn('Response body');
      WriteLn(responseBody);
    end
  else
    begin
      WriteLn('Success.');
    end;


  sbToken.Free;
  http.Free;

end;

// ---------------------------------------------------------------------------

begin

  try
    RunDemo;
  except
    on E: Exception do
      WriteLn('Unhandled exception: ', E.ClassName, ': ', E.Message);
  end;

  WriteLn;
  {$IFDEF MSWINDOWS}
  WriteLn('Press Enter to exit...');
  ReadLn;
  {$ENDIF}
end.