On Monday, October 8, 2018 at 12:10:20 PM UTC-5, Michael Merickel wrote:
>
> If you are doing loading of data at "first run of the function" then you 
> have introduced a race condition in your app where unless you do 
> appropriate locking, two threads (most wsgi servers serve a request per 
> thread) may both consider themselves the first run and load the data. The 
> only way to do this without locks is to do things at config-time like I 
> suggested before. 
>


Hello,
How would one handle the following?
We have added the initation of the class and establish connection at config 
time in 
__init__.py

config.registry.MY = MYContract()

This definatelly works, but now we are getting into issues where we get 
connection reset by peer. I guess in the other scenerio we connected every 
time, so every time we established a new connection. Now we are re-using 
the connection which causes below:
How can I try/except this at the __init__.py level in the config,...or what 
do I do in views.py to except and redo "config.registry.MY = MYContract()" 
to fix the connection issue.



[Thu Nov 01 09:50:28.215262 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]
[Thu Nov 01 09:50:28.215271 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a] Traceback (most recent call last):
[Thu Nov 01 09:50:28.215277 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]   File 
"zzzzzzzzzzz/raven/utils/serializer/manager.py", line 76, in transform
[Thu Nov 01 09:50:28.215283 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]     return repr(value)
[Thu Nov 01 09:50:28.215295 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a] TypeError: __repr__ returned non-string (type 
bytes)
[Thu Nov 01 09:50:28.215326 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]
[Thu Nov 01 09:50:28.244058 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a] mod_wsgi (pid=26861): Exception occurred 
processing WSGI script '/zzzzzzzzzzzzz.wsgi'.
..........l, headers=headers)
[Thu Nov 01 09:50:28.247647 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]   File 
"zzzzzzzzzzzz/python3.5/site-packages/httplib2/__init__.py", line 1322, in 
request
[Thu Nov 01 09:50:28.247653 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]     (response, content) = self._request(conn, 
authority, uri, request_uri, method, body, headers, redirections, cachekey)
[Thu Nov 01 09:50:28.247663 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]   File 
"/zzzzzzzzz/python3.5/site-packages/httplib2/__init__.py", line 1072, in 
_request
[Thu Nov 01 09:50:28.247669 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]     (response, content) = 
self._conn_request(conn, request_uri, method, body, headers)

[Thu Nov 01 09:50:28.247752 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]     self.send(msg)
[Thu Nov 01 09:50:28.247761 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]   File "/usr/lib/python3.5/http/client.py", 
line 908, in send
[Thu Nov 01 09:50:28.247768 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a]     self.sock.sendall(data)
[Thu Nov 01 09:50:28.247792 2018] [wsgi:error] [pid 26861:tid 
140425465390848] [remote a] ConnectionResetError: [Errno 104] Connection 
reset by peer

Thank you
Lucas





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