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* Update oslo.cache from branch 'master' - Fix memcache pool client in monkey-patched environments First off, this is an ugly hack, but we're dealing with code that essentially monkey-patches a monkey-patch. You reap what you sow. Per the linked bug, our connection pool client explodes on python 3 with eventlet monkey-patching in force: TypeError: object() takes no parameters This is due to the way __new__ is overridden in the class. We need to strip arguments from the call before they get to object(), which doesn't accept args. Unfortunately, when we're _not_ monkey-patched, adding the new override implementation fails with: TypeError: object.__new__(_MemcacheClient) is not safe, use Client.__new__() As such, we need different implementations depending on whether we are monkey-patched or not. This change passes both with and without monkey-patching and adds a unit test that exposes the bug. Note that this is a temporary, backportable fix that will ultimately be replaced by a switch to the pymemcache library which does not have the threading.local problem being worked around here. Change-Id: I039dffadeebd0ff4479b9c870c257772c43aba53 Partial-Bug: 1812935
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