Pascal (Lazarus/Delphi)

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. 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.JsonObject,
  Chilkat.StringBuilder;

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

procedure RunDemo;
var
  success: Boolean;
  authAws: TAuthAws;
  rest: TRest;
  bTls: Boolean;
  port: Integer;
  bAutoReconnect: Boolean;
  jsonToken: TJsonObject;
  lwa_token: string;
  json: TJsonObject;
  sbRequest: TStringBuilder;
  sbResponse: TStringBuilder;
  uri: string;
  statusCode: Integer;
  jsonResp: TJsonObject;
  expiresIn: Integer;
  restrictedDataToken: string;

begin
  success := False;

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

  authAws := TAuthAws.Create;
  authAws.AccessKey := 'AWS_ACCESS_KEY';
  authAws.SecretKey := 'AWS_SECRET_KEY';
  authAws.ServiceName := 'execute-api';
  //  Use the region that is correct for your needs.
  authAws.Region := 'eu-west-1';

  rest := TRest.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 := rest.Connect('sellingpartnerapi-eu.amazon.com',port,bTls,bAutoReconnect);
  if (success = False) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  success := rest.SetAuthAws(authAws);

  //  Load the previously obtained LWA access token.
  //  See Fetch SP-API LWA Access Token
  jsonToken := TJsonObject.Create;
  success := jsonToken.LoadFile('qa_data/tokens/sp_api_lwa_token.json');
  if (success = False) then
    begin
      WriteLn('Failed to load LWA access token.');
      Exit;
    end;

  //  Add the x-amz-access-token request header.
  lwa_token := jsonToken.StringOf('access_token');
  rest.ClearAllHeaders();
  rest.AddHeader('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 := TJsonObject.Create;
  json.UpdateString('restrictedResources[0].method','GET');
  json.UpdateString('restrictedResources[0].path','/orders/v0/orders');
  json.UpdateString('restrictedResources[0].dataElements[0]','buyerInfo');
  json.UpdateString('restrictedResources[0].dataElements[1]','shippingAddress');

  sbRequest := TStringBuilder.Create;
  json.EmitSb(sbRequest);

  sbResponse := TStringBuilder.Create;
  uri := '/tokens/2021-03-01/restrictedDataToken';
  success := rest.FullRequestSb('POST',uri,sbRequest,sbResponse);
  if (success = False) then
    begin
      WriteLn(rest.LastErrorText);
      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 := rest.ResponseStatusCode;
  if (statusCode <> 200) then
    begin
      WriteLn('Response status code: ' + statusCode);
      WriteLn('Response status text: ' + rest.ResponseStatusText);
      WriteLn('Response body: ');
      WriteLn(sbResponse.GetAsString());
      WriteLn('Failed.');
      Exit;
    end;

  WriteLn(sbResponse.GetAsString());

  //  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 := TJsonObject.Create;
  jsonResp.LoadSb(sbResponse);

  expiresIn := jsonResp.IntOf('expiresIn');
  restrictedDataToken := jsonResp.StringOf('restrictedDataToken');

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

  WriteLn('Success!');


  authAws.Free;
  rest.Free;
  jsonToken.Free;
  json.Free;
  sbRequest.Free;
  sbResponse.Free;
  jsonResp.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.