Dart

Amazon SP-API Upload Feed

See more Amazon SP-API Examples

Upload a feed document to the feed previously created. Dart

import 'package:chilkat/chilkat.dart';

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

  // Load your own feed data file.
  final sbRequestBody = CkStringBuilder();
  try {
    sbRequestBody.loadFile('C:/AAWorkarea/test-despatch-upload.txt', 'utf-8');
  } on ChilkatException {
    print('Failed to load test-despatch-upload.txt.');
    return;
  }

  // The SP-API Create Feed example returned JSON such as this.

  // {
  //   "feedDocumentId": "amzn1.tortuga.4.eu.8fb6f9c4-XXXX-4e7f-824f-XXXXXXXXXXXXX.ZZZZZZZZZZZZZZ",
  //   "url": "https://tortuga-prod-eu.s3-eu-west-1.amazonaws.com/%2FNinetyDays/amzn1.tortuga.4.eu.8fb6f9c4-XXXX-4e7f-824f-XXXXXXXXXXXXX.ZZZZZZZZZZZZZZ?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Date=20230222T014944Z&X-Amz-SignedHeaders=content-type%3Bhost&X-Amz-Expires=300&X-Amz-Credential=XXXXXXXXXXXXXXXXX%2F20230222%2Feu-west-1%2Fs3%2Faws4_request&X-Amz-Signature=XXXXXXXXXXXXXXXXXXXXXXXXXXXX"
  // }

  // Load the JSON feed file created by this example:  SP-API Create Feed
  final jsonFeedInfo = CkJsonObject();
  try {
    jsonFeedInfo.loadFile('qa_data/json/sp_api_feed_upload_info.json');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Get the pre-signed URL
  final url = jsonFeedInfo.stringOf('url');

  // We can use the Chilkat HTTP object because the URL is pre-signed.
  // We don't need to add our own AWS authentication because it's already in the pre-signed URL,
  // which is only valid for short amount of time.
  final http = CkHttp();

  // NOTE: The string "text/tab-separated-values; charset=UTF-8" must match exactly the contentType specified when creating the feed.
  final resp = CkHttpResponse();
  try {
    http.httpSb('PUT', url, sbRequestBody, 'utf-8', 'text/tab-separated-values; charset=UTF-8', resp);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('status code = ${resp.statusCode}');
  print('status text = ${resp.statusText}');
  print('response body:');
  print(resp.bodyStr);
}