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108 lines
3.8 KiB
Python
108 lines
3.8 KiB
Python
'''Stubs for tornado HTTP clients'''
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from __future__ import absolute_import
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import functools
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from six import BytesIO
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from tornado import httputil
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from tornado.httpclient import HTTPResponse
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from vcr.errors import CannotOverwriteExistingCassetteException
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from vcr.request import Request
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def vcr_fetch_impl(cassette, real_fetch_impl):
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@functools.wraps(real_fetch_impl)
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def new_fetch_impl(self, request, callback):
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headers = dict(request.headers)
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if request.user_agent:
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headers.setdefault('User-Agent', request.user_agent)
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# TODO body_producer, header_callback, and streaming_callback are not
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# yet supported.
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unsupported_call = (
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request.body_producer is not None or
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request.header_callback is not None or
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request.streaming_callback is not None
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)
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if unsupported_call:
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response = HTTPResponse(
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request,
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599,
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error=Exception(
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"The request (%s) uses AsyncHTTPClient functionality "
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"that is not yet supported by VCR.py. Please make the "
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"request outside a VCR.py context." % repr(request)
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),
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request_time=self.io_loop.time() - request.start_time,
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)
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return callback(response)
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vcr_request = Request(
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request.method,
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request.url,
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request.body,
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headers,
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)
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if cassette.can_play_response_for(vcr_request):
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vcr_response = cassette.play_response(vcr_request)
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headers = httputil.HTTPHeaders()
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recorded_headers = vcr_response['headers']
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if isinstance(recorded_headers, dict):
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recorded_headers = recorded_headers.items()
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for k, vs in recorded_headers:
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for v in vs:
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headers.add(k, v)
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response = HTTPResponse(
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request,
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code=vcr_response['status']['code'],
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reason=vcr_response['status']['message'],
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headers=headers,
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buffer=BytesIO(vcr_response['body']['string']),
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effective_url=vcr_response.get('url'),
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request_time=self.io_loop.time() - request.start_time,
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)
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return callback(response)
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else:
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if cassette.write_protected and cassette.filter_request(
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vcr_request
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):
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response = HTTPResponse(
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request,
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599,
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error=CannotOverwriteExistingCassetteException(
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"No match for the request (%r) was found. "
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"Can't overwrite existing cassette (%r) in "
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"your current record mode (%r)."
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% (vcr_request, cassette._path, cassette.record_mode)
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),
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request_time=self.io_loop.time() - request.start_time,
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)
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return callback(response)
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def new_callback(response):
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headers = [
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(k, response.headers.get_list(k))
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for k in response.headers.keys()
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]
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vcr_response = {
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'status': {
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'code': response.code,
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'message': response.reason,
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},
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'headers': headers,
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'body': {'string': response.body},
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'url': response.effective_url,
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}
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cassette.append(vcr_request, vcr_response)
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return callback(response)
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real_fetch_impl(self, request, new_callback)
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return new_fetch_impl
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