112 lines
4.3 KiB
Python
112 lines
4.3 KiB
Python
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# Copyright (c) 2012-2013 Mitch Garnaat http://garnaat.org/
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# Copyright 2012-2013 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish, dis-
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# tribute, sublicense, and/or sell copies of the Software, and to permit
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# persons to whom the Software is furnished to do so, subject to the fol-
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# lowing conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
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# ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
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# SHALL THE AUTHOR BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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# WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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#
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import logging
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import six
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from botocore.vendored.requests import models
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from botocore.vendored.requests.sessions import REDIRECT_STATI
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from botocore.compat import HTTPHeaders, file_type
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from botocore.exceptions import UnseekableStreamError
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logger = logging.getLogger(__name__)
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class AWSRequest(models.RequestEncodingMixin, models.Request):
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def __init__(self, *args, **kwargs):
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self.auth_path = None
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if 'auth_path' in kwargs:
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self.auth_path = kwargs['auth_path']
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del kwargs['auth_path']
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models.Request.__init__(self, *args, **kwargs)
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headers = HTTPHeaders()
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if self.headers is not None:
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for key, value in self.headers.items():
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headers[key] = value
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self.headers = headers
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def prepare(self):
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"""Constructs a :class:`AWSPreparedRequest <AWSPreparedRequest>`."""
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# Eventually I think it would be nice to add hooks into this process.
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p = AWSPreparedRequest(self)
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p.prepare_method(self.method)
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p.prepare_url(self.url, self.params)
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p.prepare_headers(self.headers)
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p.prepare_cookies(self.cookies)
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p.prepare_body(self.data, self.files)
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p.prepare_auth(self.auth)
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return p
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@property
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def body(self):
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p = models.PreparedRequest()
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p.prepare_headers({})
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p.prepare_body(self.data, self.files)
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return p.body
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class AWSPreparedRequest(models.PreparedRequest):
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"""Represents a prepared request.
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:ivar method: HTTP Method
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:ivar url: The full url
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:ivar headers: The HTTP headers to send.
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:ivar body: The HTTP body.
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:ivar hooks: The set of callback hooks.
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In addition to the above attributes, the following attributes are
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available:
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:ivar query_params: The original query parameters.
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:ivar post_param: The original POST params (dict).
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"""
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def __init__(self, original_request):
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self.original = original_request
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super(AWSPreparedRequest, self).__init__()
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self.hooks.setdefault('response', []).append(
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self.reset_stream_on_redirect)
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def reset_stream_on_redirect(self, response, **kwargs):
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if response.status_code in REDIRECT_STATI and \
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isinstance(self.body, file_type):
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logger.debug("Redirect received, rewinding stream: %s", self.body)
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self.reset_stream()
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def reset_stream(self):
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# Trying to reset a stream when there is a no stream will
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# just immediately return. It's not an error, it will produce
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# the same result as if we had actually reset the stream (we'll send
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# the entire body contents again if we need to).
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# Same case if the body is a string/bytes type.
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if self.body is None or isinstance(self.body, six.text_type) or \
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isinstance(self.body, six.binary_type):
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return
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try:
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logger.debug("Rewinding stream: %s", self.body)
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self.body.seek(0)
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except Exception as e:
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logger.debug("Unable to rewind stream: %s", e)
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raise UnseekableStreamError(stream_object=self.body)
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