(Delphi DLL) S3 Add Tags to an Object

See more Amazon S3 (new) Examples

For more information, see https://docs.aws.amazon.com/AmazonS3/latest/API/API_PutObjectTagging.html

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

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

...

procedure TForm1.Button1Click(Sender: TObject);
var
rest: HCkRest;
bTls: Boolean;
port: Integer;
bAutoReconnect: Boolean;
success: Boolean;
authAws: HCkAuthAws;
xml: HCkXml;
sbRequestBody: HCkStringBuilder;
sbResponse: HCkStringBuilder;

begin
// 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 in the desired region.
// (for us-east-1, we use "s3.amazonaws.com", but for another region, such as us-west-2, we would use "s3-us-west-2.amazonaws.com")
bTls := True;
port := 443;
bAutoReconnect := True;
success := CkRest_Connect(rest,'s3.amazonaws.com',port,bTls,bAutoReconnect);

// Provide AWS credentials.
authAws := CkAuthAws_Create();
CkAuthAws_putAccessKey(authAws,'AWS_ACCESS_KEY');
CkAuthAws_putSecretKey(authAws,'AWS_SECRET_KEY');
CkAuthAws_putServiceName(authAws,'s3');
CkAuthAws_putRegion(authAws,'us-east-1');

CkRest_SetAuthAws(rest,authAws);

// Set the bucket name via the HOST header.
// In this case, the bucket name is "chilkat100".
// Note that the Host header should use "bucketName.s3.amazonaws.com", not "bucketName.s3-us-east-1.amazonaws.com"
// The same applies to aother regions.  The Host header should simply be <bucketName>.s3.amazonaws.com regardless of the region.
CkRest_putHost(rest,'chilkat100.s3.amazonaws.com');

xml := CkXml_Create();
CkXml_putTag(xml,'Tagging');
CkXml_UpdateChildContent(xml,'TagSet|Tag|Key','plant');
CkXml_UpdateChildContent(xml,'TagSet|Tag|Value','chili pepper');

sbRequestBody := CkStringBuilder_Create();
CkXml_GetXmlSb(xml,sbRequestBody);

// It is important to add the terminating "=" after the "?tagging".
sbResponse := CkStringBuilder_Create();
success := CkRest_FullRequestSb(rest,'PUT','/chiliPepper.gif?tagging=',sbRequestBody,sbResponse);
if (success = False) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

Memo1.Lines.Add('Response status code: ' + IntToStr(CkRest_getResponseStatusCode(rest)));

// When successful, the S3 Storage service will respond with a 200 response code,
// with an XML body.  
if (CkRest_getResponseStatusCode(rest) <> 200) then
  begin
    // Examine the request/response to see what happened.
    Memo1.Lines.Add('response status code = ' + IntToStr(CkRest_getResponseStatusCode(rest)));
    Memo1.Lines.Add('response status text = ' + CkRest__responseStatusText(rest));
    Memo1.Lines.Add('response header: ' + CkRest__responseHeader(rest));
    Memo1.Lines.Add('response body: ' + CkStringBuilder__getAsString(sbResponse));
    Memo1.Lines.Add('---');
    Memo1.Lines.Add('LastRequestStartLine: ' + CkRest__lastRequestStartLine(rest));
    Memo1.Lines.Add('LastRequestHeader: ' + CkRest__lastRequestHeader(rest));
  end;

Memo1.Lines.Add(CkStringBuilder__getAsString(sbResponse));
Memo1.Lines.Add('Success.');

CkRest_Dispose(rest);
CkAuthAws_Dispose(authAws);
CkXml_Dispose(xml);
CkStringBuilder_Dispose(sbRequestBody);
CkStringBuilder_Dispose(sbResponse);

end;