How to use with_backing_file method in autotest

Best Python code snippet using autotest_python

base_job.py

Source:base_job.py

...120    wrapped_method.__name__ = method.__name__121    wrapped_method.__doc__ = method.__doc__122    return wrapped_method123# decorator for use with job_state methods124def with_backing_file(method):125    """A decorator to perform a lock-read-*-write-unlock cycle.126    When applied to a method, this decorator will automatically wrap127    calls to the method in a lock-and-read before the call followed by a128    write-and-unlock. Any operation that is reading or writing state129    should be decorated with this method to ensure that backing file130    state is consistently maintained.131    """132    @with_backing_lock133    def wrapped_method(self, *args, **dargs):134        self._read_from_backing_file()135        try:136            return method(self, *args, **dargs)137        finally:138            self._write_to_backing_file()...

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