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o ;j � @ s� d dl mZ d dlZd dlZd dlmZmZmZ d dlmZm Z m Z d dl m Z m Z mZ e r4d dlmZ dZd d dd�Zd dd�ZG dd� d�ZG dd� de�ZG dd� de�ZG dd� de�ZdS ) � )� annotationsN)�datetime� timedelta�timezone)� formatdate� parsedate� parsedate_tz)� TYPE_CHECKING�Any�Mapping)� HTTPResponsez%a, %d %b %Y %H:%M:%S GMT�deltar �date�datetime | None�returnr c C s |pt �tj�}|| S �N)r �nowr �utc)r r � r �W/opt/saltstack/salt/lib/python3.10/site-packages/pip/_vendor/cachecontrol/heuristics.py� expire_after s r �dt�strc C s t t�| �� ��S r )r �calendar�timegm� timetuple)r r r r �datetime_to_header s r c @ s* e Zd Zd dd�Zddd �Zdd d �Zd S )� BaseHeuristic�responser r � str | Nonec C s dS )a! Return a valid 1xx warning header value describing the cache adjustments. The response is provided too allow warnings like 113 http://tools.ietf.org/html/rfc7234#section-5.5.4 where we need to explicitly say response is over 24 hours old. z110 - "Response is Stale"r ��selfr r r r �warning s zBaseHeuristic.warning�dict[str, str]c C s i S )z�Update the response headers with any new headers. NOTE: This SHOULD always include some Warning header to signify that the response was cached by the client, not by way of the provided headers. r r r r r �update_headers' s z BaseHeuristic.update_headersc C s@ | � |�}|r |j�|� | �|�}|d ur |j�d|i� |S )N�Warning)r$ �headers�updater" )r! r Zupdated_headersZwarning_header_valuer r r �apply0 s zBaseHeuristic.applyN�r r r r �r r r r# )r r r r )�__name__� __module__� __qualname__r" r$ r( r r r r r s r c @ s e Zd ZdZd dd�ZdS ) � OneDayCachezM Cache the response by providing an expires 1 day in the future. r r r r# c C sZ i }d|j vr+t|j d �}ttdd�t|d d� dtji�d�}t|�|d< d|d < |S ) N�expiresr � )�days� �tzinfo)r �public� cache-control)r& r r r r r r r )r! r r& r r/ r r r r$ B s � zOneDayCache.update_headersNr* )r+ r, r- �__doc__r$ r r r r r. < s r. c @ s. e Zd ZdZddd�Zdd d �Zddd�ZdS )� ExpiresAfterz; Cache **all** requests for a defined time period. �kwr r �Nonec K s t di |��| _d S )Nr )r r )r! r8 r r r �__init__U s zExpiresAfter.__init__r r r# c C s t | j�}t|�dd�S )Nr4 )r/ r5 )r r r )r! r r/ r r r r$ X s zExpiresAfter.update_headersr c C s d}|| j S )Nz:110 - Automatically cached for %s. Response might be stale)r )r! r Ztmplr r r r" \ s zExpiresAfter.warningN)r8 r r r9 r* r) )r+ r, r- r6 r: r$ r" r r r r r7 P s r7 c @ s, e Zd ZdZh d�Zd dd�Zdd d �Zd S )� LastModifieda� If there is no Expires header already, fall back on Last-Modified using the heuristic from http://tools.ietf.org/html/rfc7234#section-4.2.2 to calculate a reasonable value. Firefox also does something like this per https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching_FAQ http://lxr.mozilla.org/mozilla-release/source/netwerk/protocol/http/nsHttpResponseHead.cpp#397 Unlike mozilla we limit this to 24-hr. > �� �� �� i, �� i- i� i� i� i� i� �respr r r# c C s� |j }d|v r i S d|v r|d dkri S |j| jvr i S d|vs%d|vr'i S t|d �}|d us3J �t�|d d� �}t|d �}|d u rHi S t�� }td|| �}|t�|� }tdt |d d ��} | |krji S || } dt� t t� | ��iS ) Nr/ r5 r4 r z last-modifiedr2 r � i�Q ) r& �status� cacheable_by_default_statusesr r r r �time�max�min�strftime�TIME_FMT�gmtime) r! r@ r& Z time_tupler Z last_modifiedr Z current_ager Zfreshness_lifetimer/ r r r r$ | s. zLastModified.update_headersr c C s d S r r )r! r@ r r r r" � s zLastModified.warningN)r@ r r r# )r@ r r r )r+ r, r- r6 rC r$ r" r r r r r; a s r; r )r r r r r r )r r r r )� __future__r r rD r r r � email.utilsr r r �typingr r r Zpip._vendor.urllib3r rH r r r r. r7 r; r r r r �<module> s !
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