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# Copyright 2016 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Transport adapter for http.client, for internal use only."""
import http.client as http_client
import logging
import socket
import urllib
from google.auth import exceptions
from google.auth import transport
_LOGGER = logging.getLogger(__name__)
class Response(transport.Response):
"""http.client transport response adapter.
Args:
response (http.client.HTTPResponse): The raw http client response.
"""
def __init__(self, response):
self._status = response.status
self._headers = {key.lower(): value for key, value in response.getheaders()}
self._data = response.read()
@property
def status(self):
return self._status
@property
def headers(self):
return self._headers
@property
def data(self):
return self._data
class Request(transport.Request):
"""http.client transport request adapter."""
def __call__(
self, url, method="GET", body=None, headers=None, timeout=None, **kwargs
):
"""Make an HTTP request using http.client.
Args:
url (str): The URI to be requested.
method (str): The HTTP method to use for the request. Defaults
to 'GET'.
body (bytes): The payload / body in HTTP request.
headers (Mapping): Request headers.
timeout (Optional(int)): The number of seconds to wait for a
response from the server. If not specified or if None, the
socket global default timeout will be used.
kwargs: Additional arguments passed throught to the underlying
:meth:`~http.client.HTTPConnection.request` method.
Returns:
Response: The HTTP response.
Raises:
google.auth.exceptions.TransportError: If any exception occurred.
"""
# socket._GLOBAL_DEFAULT_TIMEOUT is the default in http.client.
if timeout is None:
timeout = socket._GLOBAL_DEFAULT_TIMEOUT
# http.client doesn't allow None as the headers argument.
if headers is None:
headers = {}
# http.client needs the host and path parts specified separately.
parts = urllib.parse.urlsplit(url)
path = urllib.parse.urlunsplit(
("", "", parts.path, parts.query, parts.fragment)
)
if parts.scheme != "http":
raise exceptions.TransportError(
"http.client transport only supports the http scheme, {}"
"was specified".format(parts.scheme)
)
connection = http_client.HTTPConnection(parts.netloc, timeout=timeout)
try:
_LOGGER.debug("Making request: %s %s", method, url)
connection.request(method, path, body=body, headers=headers, **kwargs)
response = connection.getresponse()
return Response(response)
except (http_client.HTTPException, socket.error) as caught_exc:
new_exc = exceptions.TransportError(caught_exc)
raise new_exc from caught_exc
finally:
connection.close()
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