(Delphi DLL) Amazon SP-API Create Feed

See more Amazon SP-API Examples

Creates a feed. 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 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;
success: Boolean;
jsonToken: HCkJsonObject;
lwa_token: PWideChar;
jsonReq: HCkJsonObject;
sbRequest: HCkStringBuilder;
sbResponse: HCkStringBuilder;
path: PWideChar;
statusCode: Integer;
json: HCkJsonObject;
feedDocumentId: PWideChar;
url: 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();
success := CkRest_Connect(rest,'sellingpartnerapi-eu.amazon.com',443,True,True);
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');

jsonReq := CkJsonObject_Create();
CkJsonObject_UpdateString(jsonReq,'contentType','text/tab-separated-values; charset=UTF-8');

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

CkRest_ClearAllQueryParams(rest);
CkRest_ClearAllHeaders(rest);
CkRest_AddHeader(rest,'x-amz-access-token',lwa_token);

sbResponse := CkStringBuilder_Create();
path := '/feeds/2021-06-30/documents';
success := CkRest_FullRequestSb(rest,'POST',path,sbRequest,sbResponse);
if (success = False) then
  begin
    Memo1.Lines.Add(CkRest__lastErrorText(rest));
    Exit;
  end;

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

if (statusCode <> 201) then
  begin
    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:

// {
//   "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 := CkJsonObject_Create();

CkJsonObject_LoadSb(json,sbResponse);

feedDocumentId := CkJsonObject__stringOf(json,'feedDocumentId');
url := CkJsonObject__stringOf(json,'url');

// Save the JSON to a file for the example that constructs the XML feed and uploads..
success := CkJsonObject_WriteFile(json,'qa_data/json/sp_api_feed_upload_info.json');

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

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

end;