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keijack / python-eureka-client

A eureka client written in python. Support registering your python component to Eureka Server, as well as calling remote services by pulling the the Eureka registry.
MIT License
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discovery_client got HTTP 406 response from eureka server. #9

Closed sp3c73r2038 closed 5 years ago

sp3c73r2038 commented 5 years ago

I've deployed a test eureka server (build from master branch) at dev environment and got this error.

[2019-03-07 14:32:49]-[EurekaClient]-[line:874] -WARNING: Eureka server [http://localhost:8080/eureka/v2/] is down, use next url to try.
Traceback (most recent call last):
  File "client.py", line 6, in <module>
    "http://localhost:8080/eureka/v2/",
  File "/home/momoka/src/snippets/python/eureka/local/lib64/python3.6/site-packages/py_eureka_client/eureka_client.py", line 1125, in init_discovery_client
    cli.start()
  File "/home/momoka/src/snippets/python/eureka/local/lib64/python3.6/site-packages/py_eureka_client/eureka_client.py", line 1109, in start
    self.__pull_full_registry()
  File "/home/momoka/src/snippets/python/eureka/local/lib64/python3.6/site-packages/py_eureka_client/eureka_client.py", line 890, in __pull_full_registry
    self.__try_all_eureka_server(do_pull)
  File "/home/momoka/src/snippets/python/eureka/local/lib64/python3.6/site-packages/py_eureka_client/eureka_client.py", line 884, in __try_all_eureka_server
    raise urllib2.URLError("All eureka servers are down!")
urllib.error.URLError: <urlopen error All eureka servers are down!>

Sample code:

# -*- coding: utf-8 -*-
import py_eureka_client.eureka_client as eureka_client

eureka = eureka_client.init_discovery_client(
    "http://localhost:8080/eureka/v2/",
)

_ = eureka_client.do_service("flask_demo", "/service/context/path")
print(_)
GET /eureka/v2/apps/ HTTP/1.1
Accept-Encoding: identity
Host: localhost:8080
User-Agent: Python-urllib/3.6
Connection: close
[2019-03-07 14:35:38]-[EurekaClient]-[line:873] -ERROR: err
Traceback (most recent call last):
  File "/home/momoka/src/snippets/python/eureka/local/lib64/python3.6/site-packages/py_eureka_client/eureka_client.py", line 871, in __try_all_eureka_server
    fun(url)
  File "/home/momoka/src/snippets/python/eureka/local/lib64/python3.6/site-packages/py_eureka_client/eureka_client.py", line 888, in do_pull
    self.__applications = get_applications(url, self.__regions)
  File "/home/momoka/src/snippets/python/eureka/local/lib64/python3.6/site-packages/py_eureka_client/eureka_client.py", line 370, in get_applications
    return _get_applications_(_format_url(eureka_server) + "apps/", regions)
  File "/home/momoka/src/snippets/python/eureka/local/lib64/python3.6/site-packages/py_eureka_client/eureka_client.py", line 385, in _get_applications_
    f = urllib2.urlopen(_url, timeout=_DEFAULT_TIME_OUT)
  File "/home/momoka/src/snippets/python/eureka/local/lib64/python3.6/site-packages/py_eureka_client/__urlopen_proxy__.py", line 73, in urlopen
    cafile=cafile, capath=capath, cadefault=cadefault, context=context)
  File "/usr/lib64/python3.6/urllib/request.py", line 223, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib64/python3.6/urllib/request.py", line 532, in open
    response = meth(req, response)
  File "/usr/lib64/python3.6/urllib/request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib64/python3.6/urllib/request.py", line 570, in error
    return self._call_chain(*args)
  File "/usr/lib64/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/usr/lib64/python3.6/urllib/request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 406:

After some digging, I've found out since in about 2015 eureka server enforced all responses to GET requests are encoded in gzip by default. see https://github.com/Netflix/eureka/issues/624 .

So I have to configure eureka server to skip this gzip filter in web.xml or rebuild without it.

Would it be a proper solution to support gzipped response in client side?

keijack commented 5 years ago

Thanks for submitting, will fix it soon.

keijack commented 5 years ago

already fixed, please checkout, version 0.5.5, thanks for submitting.

shouldsee commented 1 year ago

406 error is annoying #73