[Yahoo-eng-team] [Bug 1782448] [NEW] memcache client super() fail

iain MacDonnell Wed, 18 Jul 2018 16:42:01 -0700

Public bug reported:

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

** Affects: keystonemiddleware
     Importance: Undecided
     Assignee: iain MacDonnell (imacdonn)
         Status: New

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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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[Yahoo-eng-team] [Bug 1782448] [NEW] memcache client super() fail

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