(Delphi DLL) Create Restricted Data Token (RDT)

See more Amazon SP-API Examples

Returns a Restricted Data Token (RDT) for one or more restricted resources that you specify.

For more information, see https://developer-docs.amazon.com/sp-api/docs/tokens-api-v2021-03-01-reference#post-tokens2021-03-01restricteddatatoken

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, JsonObject, StringBuilder;

...

procedure TForm1.Button1Click(Sender: TObject);
var
authAws: HCkAuthAws;
rest: HCkRest;
bTls: Boolean;
port: Integer;
bAutoReconnect: Boolean;
success: Boolean;
jsonToken: HCkJsonObject;
lwa_token: PWideChar;
json: HCkJsonObject;
sbRequest: HCkStringBuilder;
sbResponse: HCkStringBuilder;
uri: PWideChar;
statusCode: Integer;
jsonResp: HCkJsonObject;
expiresIn: Integer;
restrictedDataToken: PWideChar;

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

authAws := CkAuthAws_Create();
CkAuthAws_putAccessKey(authAws,'AWS_ACCESS_KEY');
CkAuthAws_putSecretKey(authAws,'AWS_SECRET_KEY');
CkAuthAws_putServiceName(authAws,'execute-api');
// Use the region that is correct for your needs.
CkAuthAws_putRegion(authAws,'eu-west-1');

rest := CkRest_Create();
bTls := True;
port := 443;
bAutoReconnect := True;
// The sandbox endpoint (sandbox.sellingpartnerapi-eu.amazon.com) fails.
// Use the production endpoint and see the note below.
success := CkRest_Connect(rest,'sellingpartnerapi-eu.amazon.com',port,bTls,bAutoReconnect);
if (success = False) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

success := CkRest_SetAuthAws(rest,authAws);

// Load the previously obtained LWA access token.
// See Fetch SP-API LWA Access Token
jsonToken := CkJsonObject_Create();
success := CkJsonObject_LoadFile(jsonToken,'qa_data/tokens/sp_api_lwa_token.json');
if (success = False) then
  begin
    Memo1.Lines.Add('Failed to load LWA access token.');
    Exit;
  end;

// Add the x-amz-access-token request header.
lwa_token := CkJsonObject__stringOf(jsonToken,'access_token');
CkRest_ClearAllHeaders(rest);
CkRest_AddHeader(rest,'x-amz-access-token',lwa_token);

// We're going to send a POST with the following JSON body:

// {
//   "restrictedResources": [
//     {
//       "method": "GET",
//       "path": "/orders/v0/orders",
//       "dataElements": ["buyerInfo", "shippingAddress"]
//     }
//   ]
// }

// Use this online tool to generate code from sample JSON: 
// Generate Code to Create JSON

json := CkJsonObject_Create();
CkJsonObject_UpdateString(json,'restrictedResources[0].method','GET');
CkJsonObject_UpdateString(json,'restrictedResources[0].path','/orders/v0/orders');
CkJsonObject_UpdateString(json,'restrictedResources[0].dataElements[0]','buyerInfo');
CkJsonObject_UpdateString(json,'restrictedResources[0].dataElements[1]','shippingAddress');

sbRequest := CkStringBuilder_Create();
CkJsonObject_EmitSb(json,sbRequest);

sbResponse := CkStringBuilder_Create();
uri := '/tokens/2021-03-01/restrictedDataToken';
success := CkRest_FullRequestSb(rest,'POST',uri,sbRequest,sbResponse);
if (success = False) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

// ------------------------------------------------------------------------------------
// Note: Using the sandbox endpoint, such as sandbox.sellingpartnerapi-eu.amazon.com
// results in a response status code of 400 with the following error:
// [{"code":"InvalidInput","message":"Could not match input arguments"}]
// Getting a restricted data token seems to only work with the production endpoint.
// ------------------------------------------------------------------------------------

// Examine the response status.
statusCode := CkRest_getResponseStatusCode(rest);
if (statusCode <> 200) then
  begin
    Memo1.Lines.Add('Response status code: ' + IntToStr(statusCode));
    Memo1.Lines.Add('Response status text: ' + CkRest__responseStatusText(rest));
    Memo1.Lines.Add('Response body: ');
    Memo1.Lines.Add(CkStringBuilder__getAsString(sbResponse));
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

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

// If successful, gets a JSON response such as the following:

// {
//   "expiresIn": 3600,
//   "restrictedDataToken": "Atz.sprdt|AYAB.....TQ="
// }

// Use this online tool to generate parsing code from sample JSON: 
// Generate Parsing Code from JSON

jsonResp := CkJsonObject_Create();
CkJsonObject_LoadSb(jsonResp,sbResponse);

expiresIn := CkJsonObject_IntOf(jsonResp,'expiresIn');
restrictedDataToken := CkJsonObject__stringOf(jsonResp,'restrictedDataToken');

// Save the RDT for subsequent use..
success := CkJsonObject_WriteFile(jsonResp,'qa_data/tokens/sp_api_rdt_token.json');

Memo1.Lines.Add('Success!');

CkAuthAws_Dispose(authAws);
CkRest_Dispose(rest);
CkJsonObject_Dispose(jsonToken);
CkJsonObject_Dispose(json);
CkStringBuilder_Dispose(sbRequest);
CkStringBuilder_Dispose(sbResponse);
CkJsonObject_Dispose(jsonResp);

end;