如何在 Google App Engine 中为 urlfetch 设置超时? [英] How to set timeout for urlfetch in Google App Engine?

问题描述

我正在尝试让 Django(在 GAE 之上)从另一个 Web 服务获取数据.我经常遇到这样的错误:

I'm trying to have Django (on top of GAE) fetch data from another web service. I'm often hit with error like this:

ApplicationError: 2 超时请求

ApplicationError: 2 timed out Request

方法:获取

请求地址:http://localhost:8080/

异常类型:下载错误

异常值:ApplicationError:2 超时

Exception Value: ApplicationError: 2 timed out

异常位置:/google_appengine/google/appengine/api/urlfetch.py​​ in _get_fetch_result，第 325 行

Exception Location: /google_appengine/google/appengine/api/urlfetch.py in _get_fetch_result, line 325

感觉好像它会在 12 秒后超时(我不确定，但真的很短).

It feels as if it will time out only after 12 seconds (I'm not sure, but it's really short).

问题:如何设置更长的超时时间?

推荐答案

您可以使用 获取函数.来自文档:

You can set it using the deadline argument of the fetch function. From the docs:

请求处理程序的截止时间最长为 60 秒，任务队列和 Cron 作业处理程序的截止时间最长为 10 分钟.如果截止时间为 None，则截止时间设置为 5 秒.

The deadline can be up to a maximum of 60 seconds for request handlers and 10 minutes for tasks queue and cron job handlers. If deadline is None, the deadline is set to 5 seconds.

<小时>

现在看起来已经改变了.从此处:

---

looks like this has changed now. From here:

您可以为请求设置截止时间，即服务等待响应的最长时间.默认情况下，获取的截止时间为 5 秒.您可以使用 urlfetch.set_default_fetch_deadline() 函数调整请求的默认截止日期.

You can set a deadline for a request, the most amount of time the service will wait for a response. By default, the deadline for a fetch is 5 seconds. You can adjust the default deadline for requests using the urlfetch.set_default_fetch_deadline() function.

并且此页面列出了默认超时值:

And this page lists the default timeout values:

目前，Python 运行时有几个名为 DeadlineExceededError 的错误:

Currently, there are several errors named DeadlineExceededError for the Python runtime:

• google.appengine.runtime.DeadlineExceededError:在整个请求超时时引发，通常在 60 秒后或任务队列请求 10 分钟后.
• google.appengine.runtime.apiproxy_errors.DeadlineExceededError:如果 RPC 超过其截止日期，则会引发.这通常是 5 秒，但可以使用截止日期"选项为某些 API 设置.
• google.appengine.api.urlfetch_errors.DeadlineExceededError:在 URLFetch 超时时引发.

• google.appengine.runtime.DeadlineExceededError: raised if the overall request times out, typically after 60 seconds, or 10 minutes for task queue requests.
• google.appengine.runtime.apiproxy_errors.DeadlineExceededError: raised if an RPC exceeded its deadline. This is typically 5 seconds, but it is settable for some APIs using the 'deadline' option.
• google.appengine.api.urlfetch_errors.DeadlineExceededError: raised if the URLFetch times out.

这篇关于如何在 Google App Engine 中为 urlfetch 设置超时?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！