/usr/share/pyshared/kombu/abstract.py is in python-kombu 1.4.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 | """
kombu.compression
=================
Object utilities.
:copyright: (c) 2009 - 2011 by Ask Solem.
:license: BSD, see LICENSE for more details.
"""
from copy import copy
from kombu.exceptions import NotBoundError
class Object(object):
"""Common baseclass supporting automatic kwargs->attributes handling,
and cloning."""
attrs = ()
def __init__(self, *args, **kwargs):
any = lambda v: v
for name, type_ in self.attrs:
value = kwargs.get(name)
if value is not None:
setattr(self, name, (type_ or any)(value))
else:
try:
getattr(self, name)
except AttributeError:
setattr(self, name, None)
def as_dict(self, recurse=False):
def f(obj):
if recurse and isinstance(obj, Object):
return obj.as_dict(recurse=True)
return obj
return dict((attr, f(getattr(self, attr))) for attr, _ in self.attrs)
def __copy__(self):
return self.__class__(**self.as_dict())
class MaybeChannelBound(Object):
"""Mixin for classes that can be bound to an AMQP channel."""
_channel = None
_is_bound = False
def __call__(self, channel):
"""`self(channel) -> self.bind(channel)`"""
return self.bind(channel)
def bind(self, channel):
"""Create copy of the instance that is bound to a channel."""
return copy(self).maybe_bind(channel)
def maybe_bind(self, channel):
"""Bind instance to channel if not already bound."""
if not self.is_bound and channel:
self._channel = channel
self.when_bound()
self._is_bound = True
return self
def revive(self, channel):
"""Revive channel afer connection re-established.
Used by :meth:`~kombu.connection.BrokerConnection.ensure`.
"""
if self.is_bound:
self._channel = channel
self.when_bound()
def when_bound(self):
"""Callback called when the class is bound."""
pass
def __repr__(self, item=""):
if self.is_bound:
return "<bound %s of %s>" % (item or self.__class__.__name__,
self.channel)
return "<unbound %s>" % (item, )
@property
def is_bound(self):
"""Flag set if the channel is bound."""
return self._is_bound and self._channel is not None
@property
def channel(self):
"""Current channel if the object is bound."""
if self._channel is None:
raise NotBoundError(
"Can't call method on %s not bound to a channel" % (
self.__class__.__name__))
return self._channel
|