Pascal (Lazarus/Delphi)

Upload File with User-Defined Metadata

See more Amazon S3 Examples

Demonstrates how to upload a file with user-defined metadata to the Amazon S3 service. 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;

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

procedure RunDemo;
var
  success: Boolean;
  http: THttp;
  bucketName: string;
  objectName: string;
  localFilePath: string;
  contentType: string;

begin
  success := False;

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

  http := THttp.Create;

  //  Insert your AWS keys here:
  http.AwsAccessKey := 'AWS_ACCESS_KEY';
  http.AwsSecretKey := 'AWS_SECRET_KEY';

  bucketName := 'chilkat.ocean';
  objectName := 'seahorse.jpg';
  localFilePath := 'qa_data/jpg/seahorse.jpg';
  contentType := 'image/jpg';

  //  User-defined metadata are name/value pairs, and are added to the HTTP request header.
  //  Header names must begin with "x-amz-meta-" to distinguish them from other HTTP headers.
  //  Note that Amazon S3 stores user-defined metadata keys in lowercase.

  //  For example, to add genus=Hippocampus, we do this:
  http.SetRequestHeader('x-amz-meta-genus','Hippocampus');

  //  Add a few more user-metadata key pairs.
  http.SetRequestHeader('x-amz-meta-species','big-belly seahorse');
  http.SetRequestHeader('x-amz-meta-habitat','shallow tropical and temperate waters');

  success := http.S3_UploadFile(localFilePath,contentType,bucketName,objectName);

  if (success <> True) then
    begin
      WriteLn(http.LastErrorText);
    end
  else
    begin
      WriteLn('File uploaded.');
    end;


  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.