3
Pf2 @ s d Z ddlZddlZddlZddlZddlmZ ddlmZ ddl m
Z
ddl m Z ej
eZejdZd d
ZG d d d eZdS )
z7
The httplib2 algorithms ported for use with requests.
N) parsedate_tz)CaseInsensitiveDict ) DictCache)
Serializerz9^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?c C s0 t j| j }|d |d |d |d |d fS )zParses a URI using the regex given in Appendix B of RFC 3986.
(scheme, authority, path, query, fragment) = parse_uri(uri)
r )URImatchgroups)urir
r /usr/lib/python3.6/controller.py parse_uri s r c @ s\ e Zd ZdZdddZedd Zedd Zd
d Zd d
Z dd Z
dddZ dd Z dS )CacheControllerz9An interface to see if request should cached or not.
NTc C s" |pt | _|| _|pt | _d S )N)r cache cache_etagsr
serializer)selfr r r r r r __init__! s zCacheController.__init__c C sl t |\}}}}}| s | r*td| |j }|j }|sBd}|rTdj||gpV|}|d | | }|S )z4Normalize the URL to create a safe key for the cachez(Only absolute URIs are allowed. uri = %s/?z://)r Exceptionlowerjoin) clsr schemeZ authoritypathZqueryZfragmentZ request_uriZ
defrag_urir r r _urlnorm& s zCacheController._urlnormc C s
| j |S )N)r )r r r r r cache_url: s zCacheController.cache_urlc C sV i }d}d|krd}||krR|| j d}dd |D }dd |D }t|| }|S )zz
Parse the cache control headers returning a dictionary with values
for the different directives.
z
cache-controlz
Cache-Control,c S s4 g | ],}d|j dkrtdd |jdd D qS )r =c S s g | ]}|j j qS r )stripr ).0xr r r
L s zBCacheController.parse_cache_control...)findtuplesplit)r% partr r r r' L s z7CacheController.parse_cache_control..c S s* g | ]"}d|j dkr|j j d fqS )r r# r( )r) r$ r )r% namer r r r' P s )r+ dict)r headersZretvalZ cc_headerpartsZparts_with_argsZ
parts_wo_argsr r r parse_cache_control> s z#CacheController.parse_cache_controlc C s | j |j}tjd| | j|j}d|kr:tjd dS d|kr\|d dkr\tjd dS | jj|}|dkr~tjd dS | jj ||}|stj
d
dS |j d krd }tj| |S t |j}| sd
|kr d|krtjd | jj
| tjd dS tj }tjt|d
} td|| }
tjd|
| j|} d} d| krt| d j rtt| d } tjd| nDd|krt|d }
|
dk rtj|
| }td|} tjd| d|kry t|d } tjd| W n tk
r d} Y nX d|krDyt|d }W n tk
r. d}Y nX |
|7 }
tjd|
| |
krjtjd tjd| |
|S d|krtjd | jj
| dS )ze
Return a cached response if it exists in the cache, otherwise
return False.
z Looking up "%s" in the cachezno-cachez-Request header has "no-cache", cache bypassedFzmax-ager z1Request header has "max_age" as 0, cache bypassedNzNo cache entry availablez1Cache entry deserialization failed, entry ignoredi- zVReturning cached "301 Moved Permanently" response (ignoring date and etag information)dateetagz(Purging cached response: no date or etagz!Ignoring cached response: no datez Current age based on date: %iz#Freshness lifetime from max-age: %iexpiresz#Freshness lifetime from expires: %iz+Freshness lifetime from request max-age: %iz min-freshz'Adjusted current age from min-fresh: %iz2The response is "fresh", returning cached responsez%i > %iz4The cached response is "stale" with no etag, purging)r! urlloggerdebugr1 r/ r getr loadsZwarningstatusr deletetimecalendarZtimegmr maxisdigitint
ValueError)r requestr! ccZ
cache_datarespmsgr/ Znowr2 Z current_ageZresp_ccZfreshness_lifetimer4 Z expire_timeZ min_freshr r r cached_requestV s
z CacheController.cached_requestc C s` | j |j}| jj|| jj|}i }|r\t|j}d|krH|d |d< d|kr\|d |d< |S )Nr3 ZETagz
If-None-Matchz
last-modifiedz
Last-ModifiedzIf-Modified-Since)r! r5 r r9 r r8 r r/ )r rB r! rD Z new_headersr/ r r r conditional_headers s
z#CacheController.conditional_headersc
C s ddddg}|j |kr*tjd|j | dS t|j}|dk rhd|krh|d j rht|d t|krhdS | j|j}| j|}| j |j
}tjd| d } |j d
rd } tjd |j d
rd } tjd
| r| j j |rtjd | j j
| | jod|kr(tjd | j j|| jj|||d n|j dkrXtjd | j j|| jj|| nd|kr|r|j dr|d j rt|d dkrtjd | j j|| jj|||d n:d|kr|d rtjd | j j|| jj|||d dS )zc
Algorithm for caching requests.
This assumes a requests Response object.
i, i- zStatus code %s not in %sNzcontent-lengthz&Updating cache with response from "%s"Fzno-storeTz Response header has "no-store"z Request header has "no-store"z0Purging existing cache entry to honor "no-store"r3 zCaching due to etag)bodyzCaching permanant redirectr2 zmax-ager z'Caching b/c date exists and max-age > 0r4 z Caching b/c of expires header)r: r6 r7 r r/ r? r@ lenr1 r! r5 r8 r r; r setr dumps)
r rB responserJ Zcacheable_status_codesZresponse_headersZcc_reqrC r! Zno_storer r r cache_response sd
z CacheController.cache_responsec sv | j |j}| jj|| jj|}|s*|S dg |jjt fdd|jj D d|_
| jj || jj || |S )zOn a 304 we will get a new set of headers that we want to
update our cached value with, assuming we have one.
This should only ever be called when we've sent an ETag and
gotten a 304 as the response.
zcontent-lengthc 3 s& | ] \}}|j kr||fV qd S )N)r )r% kv)excluded_headersr r T s z9CacheController.update_cached_response..rH )
r! r5 r r9 r r8 r/ updater. itemsr: rL rM )r rB rN r! Zcached_responser )rR r update_cached_response6 s
z&CacheController.update_cached_response)NTN)N)
__name__
__module__ __qualname____doc__r classmethodr r! r1 rF rG rO rV r r r r r s
y
Wr )rZ Zloggingrer= r< Z email.utilsr Z pip._vendor.requests.structuresr r r Z serializer Z getLoggerrW r6 compiler r objectr r r r r s