Pascal (Lazarus/Delphi)

Amazon SP-API Get Feeds

See more Amazon SP-API Examples

Returns feed details for the feeds that match the filters 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;
  jsonToken: TJsonObject;
  lwa_token: string;
  sbResponse: TStringBuilder;
  path: string;
  statusCode: Integer;
  json: TJsonObject;
  feedId: string;
  feedType: string;
  createdTime: string;
  processingStatus: string;
  processingStartTime: string;
  processingEndTime: string;
  nextToken: string;
  i: Integer;
  count_i: Integer;

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;
  success := rest.Connect('sandbox.sellingpartnerapi-eu.amazon.com',443,True,True);
  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);

  rest.ClearAllQueryParams();
  rest.AddQueryParam('feedTypes','POST_PRODUCT_DATA');
  rest.AddQueryParam('pageSize','10');
  rest.AddQueryParam('processingStatuses','CANCELLED,DONE');

  sbResponse := TStringBuilder.Create;
  path := '/feeds/2021-06-30/feeds';
  success := rest.FullRequestNoBodySb('GET',path,sbResponse);
  if (success = False) then
    begin
      WriteLn(rest.LastErrorText);
      Exit;
    end;

  //  Examine the response status.
  statusCode := rest.ResponseStatusCode;
  if (statusCode <> 200) then
    begin
      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:

  //  {
  //    "feeds": [
  //      {
  //        "feedId": "FeedId1",
  //        "feedType": "POST_PRODUCT_DATA",
  //        "createdTime": "2019-12-11T13:16:24.630Z",
  //        "processingStatus": "CANCELLED",
  //        "processingStartTime": "2019-12-11T13:16:24.630Z",
  //        "processingEndTime": "2019-12-11T13:16:24.630Z"
  //      }
  //    ],
  //    "nextToken": "VGhpcyB0b2tlbiBpcyBvcGFxdWUgYW5kIGludGVudGlvbmFsbHkgb2JmdXNjYXRlZA=="
  //  }

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

  json := TJsonObject.Create;

  json.LoadSb(sbResponse);

  nextToken := json.StringOf('nextToken');
  i := 0;
  count_i := json.SizeOfArray('feeds');
  while i < count_i do
    begin
      json.I := i;
      feedId := json.StringOf('feeds[i].feedId');
      feedType := json.StringOf('feeds[i].feedType');
      createdTime := json.StringOf('feeds[i].createdTime');
      processingStatus := json.StringOf('feeds[i].processingStatus');
      processingStartTime := json.StringOf('feeds[i].processingStartTime');
      processingEndTime := json.StringOf('feeds[i].processingEndTime');
      i := i + 1;
    end;

  WriteLn('Success!');


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