Pascal (Lazarus/Delphi)

S3 Upload Binary File from BinData

See more Amazon S3 (new) Examples

Upload a binary file contained in a BinData object to Amazon S3. 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.AuthAws,
  Chilkat.Rest,
  Chilkat.BinData,
  Chilkat.StringBuilder;

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

procedure RunDemo;
var
  success: Boolean;
  rest: TRest;
  bTls: Boolean;
  port: Integer;
  bAutoReconnect: Boolean;
  authAws: TAuthAws;
  pngData: TBinData;
  sbResponse: TStringBuilder;
  statusCode: Integer;

begin
  success := False;

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

  rest := TRest.Create;

  //  Connect to the Amazon AWS REST server.
  bTls := True;
  port := 443;
  bAutoReconnect := True;
  //  Make sure to connect to the region where the bucket is located..
  success := rest.Connect('s3-us-west-2.amazonaws.com',port,bTls,bAutoReconnect);

  //  Provide AWS credentials for the REST call.
  authAws := TAuthAws.Create;
  authAws.AccessKey := 'AWS_ACCESS_KEY';
  authAws.SecretKey := 'AWS_SECRET_KEY';
  //  Use the correct region..
  authAws.Region := 'us-west-2';
  authAws.ServiceName := 's3';

  success := rest.SetAuthAws(authAws);

  //  Set the bucket name via the HOST header.
  //  In this case, the bucket name is "chilkat.qa".
  //  (Also make sure to use the correct region.)
  rest.Host := 'chilkat.qa.s3-us-west-2.amazonaws.com';

  //  Load a text file into memory.
  pngData := TBinData.Create;
  success := pngData.LoadFile('qa_data/png/anemone.png');
  if (success <> True) then
    begin
      WriteLn('Failed to load file from local filesystem.');
      Exit;
    end;

  //  Indicate the Content-Type of our upload.  (This is optional)
  rest.AddHeader('Content-Type','image/png');

  //  Upload the file to Amazon S3.
  sbResponse := TStringBuilder.Create;
  success := rest.FullRequestBd('PUT','/images/sea_creatures/anemone.png',pngData,sbResponse);
  if (success <> True) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  //  Did we get a 200 response indicating success?
  statusCode := rest.ResponseStatusCode;
  if (statusCode <> 200) then
    begin
      WriteLn('Error response: ' + sbResponse.GetAsString());
      WriteLn('Status code: ' + statusCode + ', Status text: ' + rest.ResponseStatusText);
      Exit;
    end;

  WriteLn('File successfully uploaded.');


  rest.Free;
  authAws.Free;
  pngData.Free;
  sbResponse.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.