如何解决本地主机（Google App Engine - Python）的截止时间超出错误？ [英] How to solve 'deadline exceeded error in localhost (Google App Engine - Python)?

问题描述

我的谷歌应用引擎应用程序在生产中工作正常。但是当尝试从本地主机中的URL获取json时，它会报告错误。我想知道如何避免这个截止时间超过的错误？感谢提前！

错误：

 文件/usr/local/google_appengine/google/appengine/api/urlfetch.py​​，第410行，_get_fetch_result'等待HTTP响应从URL的最后期限：'+ url）
 
 url ='http://127.0.0.1:8000/api/en/languages?access_token=MY_SECRET_API_TOKEN'
  

代码

 ＃... 
 def query_api（language_code，api_request， 
 url = build_url（language_code，api_request，extra_parameters）
 result = urlfetch.fetch（url）
 try：
 data = json.loads（result。内容）
除了：
 data =无
返回数据
 
 def build_url（language_code，api_request，extra_parameters）：
 url = str（settings.SITE_URL ）+'/ api /'+ str（language_code）+'/'+ api_request +'？access_token ='+ settings.API_ACCESS_TOKEN 
 for k，v in extra_ parameters.iteritems（）：
 url = url +'&'+ urllib.urlencode（k）+'='+ urllib.urlencode（v）
 return url 
  

来自网址的回复：

  http://127.0.0.1:8000/api/en/languages?access_token=MY_SECRET_API_TOKEN 
 
 {
languages：[
 {
code：en，
name：English
}，
 {
code：es，
name ：Español
}，
 {
code：fr，
name：Français
}，
 { 
code：de，
name：Deutsch
}，
 {
code：pt，
 name：葡萄牙语
}，
 {
code：ru，
name：Pусский
}，
 {
code：iw，
name：עִברִית
}，
 {
code：zh，
name：中文
} 
] 
} 
  

解决方案

难道你的服务需要一段时间才能回应？自 默认情况下，提取的截止日期为5秒 ，可能会以较长的截止日期来查看是否有原因。

例如，要设置你可以这样做30秒：

  urlfetch.set_default_fetch_deadline（30）
  

My google app engine app works fine in production. But it reports an error, when trying to fetch json from a URL in the localhost. I would like to know how to avoid this 'Deadline exceeded' error? Thanks in advance!

Error:

File "/usr/local/google_appengine/google/appengine/api/urlfetch.py", line 410, in _get_fetch_result     'Deadline exceeded while waiting for HTTP response from URL: ' + url)

url = 'http://127.0.0.1:8000/api/en/languages?access_token=MY_SECRET_API_TOKEN'

Code:

# ...
def query_api(language_code, api_request, extra_parameters={}):
    url = build_url(language_code, api_request, extra_parameters)
    result = urlfetch.fetch(url)
    try:
        data = json.loads(result.content)
    except:
        data = None
    return data

def build_url(language_code, api_request, extra_parameters):
    url = str(settings.SITE_URL) + '/api/' + str(language_code) + '/' + api_request + '?access_token=' + settings.API_ACCESS_TOKEN
    for k, v in extra_parameters.iteritems():
        url = url + '&' + urllib.urlencode(k) + '=' + urllib.urlencode(v)
    return url

Response from URL:

http://127.0.0.1:8000/api/en/languages?access_token=MY_SECRET_API_TOKEN

{
  "languages": [
    {
      "code": "en",
      "name": "English"
    },
    {
      "code": "es",
      "name": "Español"
    },
    {
      "code": "fr",
      "name": "Français"
    },
    {
      "code": "de",
      "name": "Deutsch"
    },
    {
      "code": "pt",
      "name": "Portuguese"
    },
    {
      "code": "ru",
      "name": "Pусский"
    },
    {
      "code": "iw",
      "name": "עִברִית"
    },
    {
      "code": "zh",
      "name": "中文"
    }
  ]
}

解决方案

Could it be your service takes a while to respond? Since By default, the deadline for a fetch is 5 seconds, it might be useful to fetch with a longer deadline to see if this is the cause.

For instance, to set it to 30 seconds you'd do it like this:

urlfetch.set_default_fetch_deadline(30)

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