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more informative error if single-user server can't connect to Hub for auth

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error message points to hub_ip setting if Hub doesn't appear to be accessible at 127.0.0.1
This commit is contained in:
Min RK
2016-07-22 15:35:24 +02:00
parent 87ab07b322
commit 8fbaedf4d7
1 changed files with 19 additions and 5 deletions
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22
jupyterhub/services/auth.py
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@@ -7,6 +7,7 @@ HubAuth can be used in any application, even outside tornado.
HubAuthenticated is a mixin class for tornado handlers that should authenticate with the Hub.
"""
import socket
import time
from urllib.parse import quote
@@ -148,12 +149,25 @@ class HubAuth(Configurable):
cached = self.cookie_cache.get(encrypted_cookie)
if cached is not None:
return cached
r = requests.get(url_path_join(
self.api_url, "authorizations/cookie", self.cookie_name, quote(encrypted_cookie, safe=''),
try:
r = requests.get(
url_path_join(self.api_url,
"authorizations/cookie",
self.cookie_name,
quote(encrypted_cookie, safe=''),
),
headers = {'Authorization' : 'token %s' % self.api_token},
headers = {
'Authorization' : 'token %s' % self.api_token,
},
)
except requests.ConnectionError:
msg = "Failed to connect to Hub API at %r." % self.api_url
msg += " Is the Hub accessible at this URL (from host: %s)?" % socket.gethostname()
if '127.0.0.1' in self.api_url:
msg += " Make sure to set c.JupyterHub.hub_ip to an IP accessible to" + \
" single-user servers if the servers are not on the same host as the Hub."
raise HTTPError(500, msg)
if r.status_code == 404:
data = None
elif r.status_code == 403: