(Delphi ActiveX) Amazon SP-API Create Feed Doc

See more Amazon SP-API Examples

Creates a feed document. Amazon returns a feedDocumentId value, encryption details, and a URL for uploading the feed contents.

For more information, see https://developer-docs.amazon.com/sp-api/docs/feeds-api-v2020-09-04-use-case-guide

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

uses
    Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
    Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

...

procedure TForm1.Button1Click(Sender: TObject);
var
authAws: TChilkatAuthAws;
rest: TChilkatRest;
success: Integer;
jsonToken: TChilkatJsonObject;
lwa_token: WideString;
jsonReq: TChilkatJsonObject;
sbRequest: TChilkatStringBuilder;
sbResponse: TChilkatStringBuilder;
path: WideString;
statusCode: Integer;
json: TChilkatJsonObject;
feedDocumentId: WideString;
url: WideString;

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

authAws := TChilkatAuthAws.Create(Self);
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 := TChilkatRest.Create(Self);
success := rest.Connect('sellingpartnerapi-eu.amazon.com',443,1,1);
if (success = 0) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

success := rest.SetAuthAws(authAws.ControlInterface);

// Load the previously obtained LWA access token.
// See Fetch SP-API LWA Access Token
jsonToken := TChilkatJsonObject.Create(Self);
success := jsonToken.LoadFile('qa_data/tokens/sp_api_lwa_token.json');
if (success = 0) then
  begin
    Memo1.Lines.Add('Failed to load LWA access token.');
    Exit;
  end;

// Add the x-amz-access-token request header.
lwa_token := jsonToken.StringOf('access_token');

jsonReq := TChilkatJsonObject.Create(Self);
jsonReq.UpdateString('contentType','text/tab-separated-values; charset=UTF-8');

sbRequest := TChilkatStringBuilder.Create(Self);
jsonReq.EmitSb(sbRequest.ControlInterface);

rest.ClearAllQueryParams();
rest.ClearAllHeaders();
rest.AddHeader('x-amz-access-token',lwa_token);

sbResponse := TChilkatStringBuilder.Create(Self);
path := '/feeds/2021-06-30/documents';
success := rest.FullRequestSb('POST',path,sbRequest.ControlInterface,sbResponse.ControlInterface);
if (success = 0) then
  begin
    Memo1.Lines.Add(rest.LastErrorText);
    Exit;
  end;

// Examine the response status.
statusCode := rest.ResponseStatusCode;
Memo1.Lines.Add('statusCode: ' + IntToStr(statusCode));

if (statusCode <> 201) then
  begin
    Memo1.Lines.Add('Response status text: ' + rest.ResponseStatusText);
    Memo1.Lines.Add('Response body: ');
    Memo1.Lines.Add(sbResponse.GetAsString());
    Memo1.Lines.Add('Failed.');
    Exit;
  end;

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

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

// {
//   "feedDocumentId": "3d4e42b5-1d6e-44e8-a89c-2abfca0625bb",
//   "url": "https://d34o8swod1owfl.cloudfront.net/Feed_101__POST_PRODUCT_DATA_.xml"
// }

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

json := TChilkatJsonObject.Create(Self);

json.LoadSb(sbResponse.ControlInterface);

feedDocumentId := json.StringOf('feedDocumentId');
url := json.StringOf('url');

// Save the JSON to a file for the example that uploads the feed..
success := json.WriteFile('qa_data/json/sp_api_feed_upload_info.json');

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