OpenStack Study: log.py

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def log(method):

    """Decorator helping to log method calls."""

    def wrapper(*args, **kwargs):

        instance = args[0]

        data = {"class_name": (instance.__class__.__module__ + '.'

                               + instance.__class__.__name__),

                "method_name": method.__name__,

                "args": args[1:], "kwargs": kwargs}

        LOG.debug(_('%(class_name)s method %(method_name)s'

                    ' called with arguments %(args)s %(kwargs)s'), data)

        return method(*args, **kwargs)

    return wrapper