mirror of
https://github.com/kevin1024/vcrpy.git
synced 2025-12-09 01:03:24 +00:00
150 lines
4.6 KiB
Python
150 lines
4.6 KiB
Python
'''The container for recorded requests and responses'''
|
|
|
|
try:
|
|
from collections import Counter, OrderedDict
|
|
except ImportError:
|
|
from .compat.counter import Counter
|
|
from .compat.ordereddict import OrderedDict
|
|
|
|
from contextdecorator import ContextDecorator
|
|
|
|
# Internal imports
|
|
from .patch import install, reset
|
|
from .persist import load_cassette, save_cassette
|
|
from .serializers import yamlserializer
|
|
from .matchers import requests_match, url, method
|
|
from .errors import UnhandledHTTPRequestError
|
|
|
|
|
|
class Cassette(ContextDecorator):
|
|
'''A container for recorded requests and responses'''
|
|
|
|
@classmethod
|
|
def load(cls, path, **kwargs):
|
|
'''Load in the cassette stored at the provided path'''
|
|
new_cassette = cls(path, **kwargs)
|
|
new_cassette._load()
|
|
return new_cassette
|
|
|
|
def __init__(self,
|
|
path,
|
|
serializer=yamlserializer,
|
|
record_mode='once',
|
|
match_on=[url, method]):
|
|
self._path = path
|
|
self._serializer = serializer
|
|
self._match_on = match_on
|
|
|
|
# self.data is the list of (req, resp) tuples
|
|
self.data = []
|
|
self.play_counts = Counter()
|
|
self.dirty = False
|
|
self.rewound = False
|
|
self.record_mode = record_mode
|
|
|
|
@property
|
|
def play_count(self):
|
|
return sum(self.play_counts.values())
|
|
|
|
@property
|
|
def requests(self):
|
|
return [request for (request, response) in self.data]
|
|
|
|
@property
|
|
def responses(self):
|
|
return [response for (request, response) in self.data]
|
|
|
|
@property
|
|
def write_protected(self):
|
|
return self.rewound and self.record_mode == 'once' or \
|
|
self.record_mode == 'none'
|
|
|
|
def append(self, request, response):
|
|
'''Add a request, response pair to this cassette'''
|
|
self.data.append((request, response))
|
|
self.dirty = True
|
|
|
|
def play_response(self, request):
|
|
'''
|
|
Get the response corresponding to a request, but only if it
|
|
hasn't been played back before, and mark it as played
|
|
'''
|
|
for index, (stored_request, response) in enumerate(self.data):
|
|
if requests_match(request, stored_request, self._match_on):
|
|
if self.play_counts[index] == 0:
|
|
self.play_counts[index] += 1
|
|
return response
|
|
# The cassette doesn't contain the request asked for.
|
|
raise UnhandledHTTPRequestError(
|
|
"The cassette (%r) doesn't contain the request (%r) asked for"
|
|
% (self._path, request)
|
|
)
|
|
|
|
def responses_of(self, request):
|
|
'''
|
|
Find the responses corresponding to a request.
|
|
This function isn't actually used by VCR internally, but is
|
|
provided as an external API.
|
|
'''
|
|
responses = \
|
|
[resp for req, resp in self.data if
|
|
requests_match(req, request, self._match_on)]
|
|
|
|
if responses:
|
|
return responses
|
|
# The cassette doesn't contain the request asked for.
|
|
raise UnhandledHTTPRequestError(
|
|
"The cassette (%r) doesn't contain the request (%r) asked for"
|
|
% (self._path, request)
|
|
)
|
|
|
|
def _as_dict(self):
|
|
return {"requests": self.requests, "responses": self.responses}
|
|
|
|
def _save(self, force=False):
|
|
if force or self.dirty:
|
|
save_cassette(
|
|
self._path,
|
|
self._as_dict(),
|
|
serializer=self._serializer
|
|
)
|
|
self.dirty = False
|
|
|
|
def _load(self):
|
|
try:
|
|
requests, responses = load_cassette(
|
|
self._path,
|
|
serializer=self._serializer
|
|
)
|
|
for request, response in zip(requests, responses):
|
|
self.append(request, response)
|
|
self.dirty = False
|
|
self.rewound = True
|
|
except IOError:
|
|
pass
|
|
|
|
def __str__(self):
|
|
return "<Cassette containing {0} recorded response(s)>".format(
|
|
len(self)
|
|
)
|
|
|
|
def __len__(self):
|
|
'''Return the number of request,response pairs stored in here'''
|
|
return len(self.data)
|
|
|
|
def __contains__(self, request):
|
|
'''Return whether or not a request has been stored'''
|
|
for stored_request, response in self.data:
|
|
if requests_match(stored_request, request, self._match_on):
|
|
return True
|
|
return False
|
|
|
|
def __enter__(self):
|
|
'''Patch the fetching libraries we know about'''
|
|
install(self)
|
|
return self
|
|
|
|
def __exit__(self, typ, value, traceback):
|
|
self._save()
|
|
reset()
|