GAE - AppEngine - DeadlineExceededError:等待来自URL的HTTP响应时超出截止时间:

Question

我有一个Google AppEngine应用程序,它在我的本地计算机上运行良好.该应用程序将图像(从网址)发布到我的Facebook墙上.但是,当我将其部署到Google的服务器时,我收到一个错误:

DeadlineExceededError: Deadline exceeded while waiting for HTTP response from URL: 

违规代码是:

facebook_access_token = facebook_info['access_token']

facebook_post_url = 'https://graph.facebook.com/me/photos?access_token=%s&url=%s&name=%s&method=post' % (facebook_access_token, url, caption)
facebook_post_url = facebook_post_url.replace(" ", "+");
facebook_result = urlfetch.fetch(facebook_post_url)

if facebook_result.status_code == 200:
  facebook_result_object = json.loads(facebook_result.content) 
  output_ids['facebook'] = facebook_result_object['id']
else:
  output_ids['facebook'] = ''

Ans完整的错误跟踪是:

Traceback (most recent call last):
  File "/base/python_runtime/python_lib/versions/1/google/appengine/ext/webapp/_webapp25.py", line 710, in __call__
    handler.get(*groups)
  File "/base/data/home/apps/s~digibackapi/1.362663258877230387/main.py", line 512, in get
    facebook_result = urlfetch.fetch(facebook_post_url)
  File "/base/python_runtime/python_lib/versions/1/google/appengine/api/urlfetch.py", line 266, in fetch
    return rpc.get_result()
  File "/base/python_runtime/python_lib/versions/1/google/appengine/api/apiproxy_stub_map.py", line 604, in get_result
    return self.__get_result_hook(self)
  File "/base/python_runtime/python_lib/versions/1/google/appengine/api/urlfetch.py", line 404, in _get_fetch_result
    'Deadline exceeded while waiting for HTTP response from URL: ' + url)
DeadlineExceededError: Deadline exceeded while waiting for HTTP response from URL: https://graph.facebook.com/me/photos?access_token=<ACCESS_TOKEN>&url=http://digiback.cc/ej7&name=Trees&method=post

同样,代码对我来说看起来很可靠,并且在我的本地机器上运行正常.这可能与超时有关吗？当我facebook_post_url在浏览器中尝试时,它会立即返回.

有没有人有任何想法？我在这里完全失败了.

非常感谢!

Answer 1

简单回答:网址提取的默认截止日期设置为5秒.

怎么修:

from google.appengine.api import urlfetch

urlfetch.set_default_fetch_deadline(60)

Answer 2

尝试将urlfetch的截止日期设置为30秒或更长时间(取决于您是否在任务处理程序或请求处理程序中调用urlfetch)

有关urlfetch的更多信息:Url Fetch Docs