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PER_ALWAYS� PER_INSTANCE)zapt-getz(--option=Dpkg::Options::=--force-confoldz*--option=Dpkg::options::=--force-unsafe-ioz --assume-yesz--quiet)z/var/lib/dpkg/lock-frontendz/var/lib/dpkg/lockz /var/cache/apt/archives/lockz/var/lib/apt/lists/lock� �cfg�returnc C s� | sd}dg}n | � d�}| � d�}t|t�r|g}n t|t�s$td��t�|�s:t|��� dkrA|rAt� |d �rAt
t t |�S g S )a9 Parse the 'apt_get_wrapper' section of cloud-config.
apt_get_wrapper may be defined in cloud-config:
apt_get_wrapper:
enabled: true
command: ["eatmydata"]
The function takes the value of "apt_get_wrapper" and returns the list
of arguments to prefix to the apt-get command.
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t| _|d u rd}t|�t| j� | _|| _ddi| _d S )Nz dist-upgrade�DEBIAN_FRONTEND�noninteractive)�super�__init__�APT_GET_COMMANDr& �tuple� apt_commandr' � environment)�selfr( r% r& r' �� __class__r r r, M s �z Apt.__init__r r c C s& t |t|�d��|�d�|�d�d�S )N�apt_get_wrapperr& r' r$ )r" r! r )�clsr( r r r r � from_configa s ��zApt.from_configc C s t t�| jd ��S )Nr )�boolr
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splitlines)r1 �respr r r �get_all_packagesw s zApt.get_all_packages�pkglistc s � fdd�|D �S )Nc s. g | ]}t �d |�d �d�� �� vr|�qS )z/|=r z-^)�re�split�rstriprG )�.0�pkgr8 r r �
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�z Apt.get_unavailable_packagesc sd | � � t�dt|��}| �dd� |D ��� � r t�d� � � fdd�|D �}|r0| jd|d� � S )N�%s=%sc S s g | ] }|� d �d �qS )�=r )rJ )rL �xr r r rN � s z(Apt.install_packages.<locals>.<listcomp>zXThe following packages were not found by APT so APT will not attempt to install them: %sc s g | ]}|� vr|�qS r r )rL �p�� unavailabler r rN � s �install)�pkgs)r? r �expand_package_listr rO �LOG�debugr> )r1 rH �
to_installr rT r �install_packages� s ��zApt.install_packagesc C s� |d u rg }t | j�}|rt|t�r|�|� n |r$t|t �r$|�|� |dkr+| j}|�|� t�d|�}|�|� | j || j
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C s� t D ]<}tj�|�s qt|d��&}z t�|tjtjB � W n t y. Y W d � dS w W d � n1 s9w Y qdS )ztDetermines if another process holds any apt locks.
If all locks are clear, return True else False.
�wNFT)
�APT_LOCK_FILES�os�path�exists�open�fcntl�lockf�LOCK_EX�LOCK_NB�OSError)r1 �lock�handler r r �_apt_lock_available� s �� ��zApt._apt_lock_availablec C s� t �� }t�d� t �� | |k rK| �� st �d� q t�d� z tjdi |��W S tjyB | �� r6� t�d� t �d� Y nw t �� | |k std��)zWWait for apt install to complete.
subp_kwargs: kwargs to pass to subp
zWaiting for APT lockr@ zAPT lock availablez*Another process holds APT lock. Waiting...zCould not get APT lockNr ) �time� monotonicrY rZ rs �sleepr
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