LIU Yulong 975143fd08 Add a generic coordination lock mechanism ...

For various synchronized scenarios, this decorator
allows flexible lock name with parameters and names
of underlying functions.
For instance:
    @synchronized('{f_name}-{resource.id}-{snap[name]}')
    def foo(self, resource, snap):

Change-Id: I4bf75be2902cd598a5a5a2c5887d4b4262f3e042
Related-Bug: #1824911

2019-06-06 09:56:58 +08:00

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