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�CloudInitPickleMixina� Scaffolding for versioning of pickles.
This class implements ``__getstate__`` and ``__setstate__`` to provide
lightweight versioning of the pickles that are generated for classes which
use it. Versioning is done at the class level.
The current version of a class's pickle should be set in the class variable
``_ci_pkl_version``, as an int. If not overridden, it will default to 0.
On unpickle, the object's state will be restored and then
``self._unpickle`` is called with the version of the stored pickle as the
only argument: this is where classes should implement any deserialization
fixes they require. (If the stored pickle has no version, 0 is passed.)
� c �j � | j j � }t | � j |d< |S )aL Persist instance state, adding a pickle version attribute.
This adds a ``_ci_pkl_version`` attribute to ``self.__dict__`` and
returns that for serialisation. The attribute is stripped out in
``__setstate__`` on unpickle.
The value of ``_ci_pkl_version`` is ``type(self)._ci_pkl_version``.
�_ci_pkl_version)�__dict__�copy�typer )�self�states �7/usr/lib/python3/dist-packages/cloudinit/persistence.py� __getstate__z!CloudInitPickleMixin.__getstate__ s0 � � �
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�"�"�$��#'��:�#=�#=�� � �� � r �returnNc � � |j dd� }| j j |� | j |� y)aE Restore instance state and handle missing attributes on upgrade.
This will be called when an instance of this class is unpickled; the
previous instance's ``__dict__`` is passed as ``state``. This method
removes the pickle version from the stored state, restores the
remaining state into the current instance, and then calls
``self._unpickle`` with the version (or 0, if no version is found in
the stored state).
See https://docs.python.org/3/library/pickle.html#object.__setstate__
for further background.
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� � �U�#� ���w� r �ci_pkl_versionc � � y)a> Perform any deserialization fixes required.
By default, this does nothing. Classes using this mixin should
override this method if they have fixes they need to apply.
``ci_pkl_version`` will be the version stored in the pickle for this
object, or 0 if no version is present.
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