def METHOD_NAME(url):
  match = re.match(
      r'https://chromiumdash\.appspot\.com/fetch_releases\?'
      r'num=1&platform=([a-zA-Z0-9]+)($|&channel=([a-zA-Z]+))', url)
  if not match:
    return None
  res = []
  with open(CD_ALL, 'r') as all_info:
    info_json = json.load(all_info)
    for info in info_json:
      if info['platform'] == match.group(1):
        if match.group(3) and info['channel'] != match.group(3):
          continue
        res.append(info)
  return json.dumps(res)