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vcrpy/vcr/patch.py
Kevin McCarthy e84cd6f059 Major Refactor of Stubs
So the stubs were getting out of hand, and while trying to add support for the
putrequest and putheader methods, I had an idea for a cleaner way to handle
the stubs using the VCRHTTPConnection more as a proxy object.  So
VCRHTTPConnection and VCRHTTPSConnection no longer inherit from HTTPConnection
and HTTPSConnection.  This allowed me to get rid of quite a bit of
copy-and-pasted stdlib code.
2014-03-08 19:22:58 -10:00

94 lines
3.5 KiB
Python

'''Utilities for patching in cassettes'''
import httplib
from .stubs import VCRHTTPConnection, VCRHTTPSConnection
# Save some of the original types for the purposes of unpatching
_HTTPConnection = httplib.HTTPConnection
_HTTPSConnection = httplib.HTTPSConnection
try:
# Try to save the original types for requests
import requests.packages.urllib3.connectionpool as cpool
_VerifiedHTTPSConnection = cpool.VerifiedHTTPSConnection
_cpoolHTTPConnection = cpool.HTTPConnection
_cpoolHTTPSConnection = cpool.HTTPSConnection
except ImportError: # pragma: no cover
pass
try:
# Try to save the original types for urllib3
import urllib3
_VerifiedHTTPSConnection = urllib3.connectionpool.VerifiedHTTPSConnection
except ImportError: # pragma: no cover
pass
def install(cassette):
"""
Patch all the HTTPConnections references we can find!
This replaces the actual HTTPConnection with a VCRHTTPConnection
object which knows how to save to / read from cassettes
"""
httplib.HTTPConnection = httplib.HTTP._connection_class = VCRHTTPConnection
httplib.HTTPSConnection = httplib.HTTPS._connection_class = (
VCRHTTPSConnection)
httplib.HTTPConnection.cassette = cassette
httplib.HTTPSConnection.cassette = cassette
# patch requests v1.x
try:
import requests.packages.urllib3.connectionpool as cpool
from .stubs.requests_stubs import VCRVerifiedHTTPSConnection
cpool.VerifiedHTTPSConnection = VCRVerifiedHTTPSConnection
cpool.VerifiedHTTPSConnection.cassette = cassette
cpool.HTTPConnection = VCRHTTPConnection
cpool.HTTPConnection.cassette = cassette
# patch requests v2.x
cpool.HTTPConnectionPool.ConnectionCls = VCRHTTPConnection
cpool.HTTPConnectionPool.cassette = cassette
cpool.HTTPSConnectionPool.ConnectionCls = VCRHTTPSConnection
cpool.HTTPSConnectionPool.cassette = cassette
except ImportError: # pragma: no cover
pass
# patch urllib3
try:
import urllib3.connectionpool as cpool
from .stubs.urllib3_stubs import VCRVerifiedHTTPSConnection
cpool.VerifiedHTTPSConnection = VCRVerifiedHTTPSConnection
cpool.VerifiedHTTPSConnection.cassette = cassette
cpool.HTTPConnection = VCRHTTPConnection
cpool.HTTPConnection.cassette = cassette
except ImportError: # pragma: no cover
pass
def reset():
'''Undo all the patching'''
httplib.HTTPConnection = httplib.HTTP._connection_class = _HTTPConnection
httplib.HTTPSConnection = httplib.HTTPS._connection_class = \
_HTTPSConnection
try:
import requests.packages.urllib3.connectionpool as cpool
# unpatch requests v1.x
cpool.VerifiedHTTPSConnection = _VerifiedHTTPSConnection
cpool.HTTPConnection = _cpoolHTTPConnection
# unpatch requests v2.x
cpool.HTTPConnectionPool.ConnectionCls = _cpoolHTTPConnection
cpool.HTTPSConnection = _cpoolHTTPSConnection
cpool.HTTPSConnectionPool.ConnectionCls = _cpoolHTTPSConnection
except ImportError: # pragma: no cover
pass
try:
import urllib3.connectionpool as cpool
cpool.VerifiedHTTPSConnection = _VerifiedHTTPSConnection
cpool.HTTPConnection = _HTTPConnection
cpool.HTTPSConnection = _HTTPSConnection
cpool.HTTPConnectionPool.ConnectionCls = _HTTPConnection
cpool.HTTPSConnectionPool.ConnectionCls = _HTTPSConnection
except ImportError: # pragma: no cover
pass