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[Bug 1782448] Re: memcache client super() fail

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: iain MacDonnell <1782448@xxxxxxxxxxxxxxxxxx>
Date: Wed, 18 Jul 2018 23:32:26 -0000
Reply-to: Bug 1782448 <1782448@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Need to apply the same fix as in
https://review.openstack.org/#/c/175291/

** Project changed: keystone => keystonemiddleware

** Changed in: keystonemiddleware
     Assignee: (unassigned) => iain MacDonnell (imacdonn)

** Description changed:

+ Applies to Pike, but not later releases...
+ 
  When configured to use the memcache connection pool, clients (e.g.
  neutron-server) fail with:
  
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors Traceback (most recent call last):
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/oslo_middleware/catch_errors.py", line 40, in __call__
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     response = req.get_response(self.application)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/webob/request.py", line 1316, in send
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     application, catch_exc_info=False)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/webob/request.py", line 1280, in call_application
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     app_iter = application(self.environ, start_response)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/webob/dec.py", line 131, in __call__
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     resp = self.call_func(req, *args, **self.kwargs)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/webob/dec.py", line 196, in call_func
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     return self.func(req, *args, **kwargs)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 331, in __call__
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     response = self.process_request(req)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 622, in process_request
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     resp = super(AuthProtocol, self).process_request(request)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 404, in process_request
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     allow_expired=allow_expired)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 434, in _do_fetch_token
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     data = self.fetch_token(token, **kwargs)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 736, in fetch_token
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     cached = self._cache_get_hashes(token_hashes)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 719, in _cache_get_hashes
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     cached = self._token_cache.get(token)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/_cache.py", line 214, in get
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     with self._cache_pool.reserve() as cache:
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib64/python2.7/contextlib.py", line 17, in __enter__
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     return self.gen.next()
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/_cache.py", line 98, in reserve
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     with self._pool.get() as client:
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/eventlet/queue.py", line 295, in get
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     return self._get()
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/_memcache_pool.py", line 149, in _get
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     conn = ConnectionPool._get(self)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/_memcache_pool.py", line 97, in _get
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     conn = self._create_connection()
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/_memcache_pool.py", line 143, in _create_connection
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     socket_timeout=self._socket_timeout)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/memcache.py", line 223, in __init__
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     super(Client, self).__init__()
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors TypeError: super(type, obj): obj must be an instance or subtype of type

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https://bugs.launchpad.net/bugs/1782448

Title:
  memcache client super() fail

Status in keystonemiddleware:
  New

Bug description:
  Applies to Pike, but not later releases...

  When configured to use the memcache connection pool, clients (e.g.
  neutron-server) fail with:

  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors Traceback (most recent call last):
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/oslo_middleware/catch_errors.py", line 40, in __call__
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     response = req.get_response(self.application)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/webob/request.py", line 1316, in send
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     application, catch_exc_info=False)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/webob/request.py", line 1280, in call_application
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     app_iter = application(self.environ, start_response)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/webob/dec.py", line 131, in __call__
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     resp = self.call_func(req, *args, **self.kwargs)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/webob/dec.py", line 196, in call_func
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     return self.func(req, *args, **kwargs)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 331, in __call__
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     response = self.process_request(req)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 622, in process_request
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     resp = super(AuthProtocol, self).process_request(request)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 404, in process_request
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     allow_expired=allow_expired)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 434, in _do_fetch_token
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     data = self.fetch_token(token, **kwargs)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 736, in fetch_token
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     cached = self._cache_get_hashes(token_hashes)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/__init__.py", line 719, in _cache_get_hashes
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     cached = self._token_cache.get(token)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/_cache.py", line 214, in get
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     with self._cache_pool.reserve() as cache:
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib64/python2.7/contextlib.py", line 17, in __enter__
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     return self.gen.next()
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/_cache.py", line 98, in reserve
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     with self._pool.get() as client:
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/eventlet/queue.py", line 295, in get
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     return self._get()
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/_memcache_pool.py", line 149, in _get
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     conn = ConnectionPool._get(self)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/_memcache_pool.py", line 97, in _get
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     conn = self._create_connection()
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/keystonemiddleware/auth_token/_memcache_pool.py", line 143, in _create_connection
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     socket_timeout=self._socket_timeout)
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors   File "/usr/lib/python2.7/site-packages/memcache.py", line 223, in __init__
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors     super(Client, self).__init__()
  2018-07-18 21:00:32.568 14810 ERROR oslo_middleware.catch_errors TypeError: super(type, obj): obj must be an instance or subtype of type

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References

[Bug 1782448] [NEW] memcache client super() fail
From: iain MacDonnell, 2018-07-18