Delphi DLL

S3 Upload Binary File from BinData

See more Amazon S3 (new) Examples

Upload a binary file contained in a BinData object to Amazon S3. Delphi DLL

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, AuthAws, Rest, BinData, StringBuilder;

...

procedure TForm1.Button1Click(Sender: TObject);
var
success: Boolean;
rest: HCkRest;
bTls: Boolean;
port: Integer;
bAutoReconnect: Boolean;
authAws: HCkAuthAws;
pngData: HCkBinData;
sbResponse: HCkStringBuilder;
statusCode: Integer;

begin
success := False;

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

rest := CkRest_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 := CkRest_Connect(rest,'s3-us-west-2.amazonaws.com',port,bTls,bAutoReconnect);

// Provide AWS credentials for the REST call.
authAws := CkAuthAws_Create();
CkAuthAws_putAccessKey(authAws,'AWS_ACCESS_KEY');
CkAuthAws_putSecretKey(authAws,'AWS_SECRET_KEY');
// Use the correct region..
CkAuthAws_putRegion(authAws,'us-west-2');
CkAuthAws_putServiceName(authAws,'s3');

success := CkRest_SetAuthAws(rest,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.)
CkRest_putHost(rest,'chilkat.qa.s3-us-west-2.amazonaws.com');

// Load a text file into memory.
pngData := CkBinData_Create();
success := CkBinData_LoadFile(pngData,'qa_data/png/anemone.png');
if (success <> True) then
  begin
    Memo1.Lines.Add('Failed to load file from local filesystem.');
    Exit;
  end;

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

// Upload the file to Amazon S3.
sbResponse := CkStringBuilder_Create();
success := CkRest_FullRequestBd(rest,'PUT','/images/sea_creatures/anemone.png',pngData,sbResponse);
if (success <> True) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

// Did we get a 200 response indicating success?
statusCode := CkRest_getResponseStatusCode(rest);
if (statusCode <> 200) then
  begin
    Memo1.Lines.Add('Error response: ' + CkStringBuilder__getAsString(sbResponse));
    Memo1.Lines.Add('Status code: ' + IntToStr(statusCode) + ', Status text: ' + CkRest__responseStatusText(rest));
    Exit;
  end;

Memo1.Lines.Add('File successfully uploaded.');

CkRest_Dispose(rest);
CkAuthAws_Dispose(authAws);
CkBinData_Dispose(pngData);
CkStringBuilder_Dispose(sbResponse);

end;