/usr/lib/python2.7/dist-packages/treq/client.py is in python-treq 15.1.0-1.
This file is owned by root:root, with mode 0o644.
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import mimetypes
import uuid
from io import BytesIO
from twisted.internet.interfaces import IProtocol
from twisted.internet.defer import Deferred
from twisted.python.components import proxyForInterface
from twisted.python.compat import _PY3, unicode
from twisted.python.filepath import FilePath
from twisted.web.http import urlparse
if _PY3:
from urllib.parse import urlunparse, urlencode as _urlencode
def urlencode(query, doseq):
return _urlencode(query, doseq).encode('ascii')
else:
from urlparse import urlunparse
from urllib import urlencode
from twisted.web.http_headers import Headers
from twisted.web.iweb import IBodyProducer, IResponse
from twisted.web.client import (
FileBodyProducer,
RedirectAgent,
ContentDecoderAgent,
GzipDecoder,
CookieAgent
)
from twisted.python.components import registerAdapter
from treq._utils import default_reactor
from treq.auth import add_auth
from treq import multipart
from treq.response import _Response
if _PY3:
from http.cookiejar import CookieJar
else:
from cookielib import CookieJar
from requests.cookies import cookiejar_from_dict, merge_cookies
class _BodyBufferingProtocol(proxyForInterface(IProtocol)):
def __init__(self, original, buffer, finished):
self.original = original
self.buffer = buffer
self.finished = finished
def dataReceived(self, data):
self.buffer.append(data)
self.original.dataReceived(data)
def connectionLost(self, reason):
self.original.connectionLost(reason)
self.finished.errback(reason)
class _BufferedResponse(proxyForInterface(IResponse)):
def __init__(self, original):
self.original = original
self._buffer = []
self._waiters = []
self._waiting = None
self._finished = False
self._reason = None
def _deliverWaiting(self, reason):
self._reason = reason
self._finished = True
for waiter in self._waiters:
for segment in self._buffer:
waiter.dataReceived(segment)
waiter.connectionLost(reason)
def deliverBody(self, protocol):
if self._waiting is None and not self._finished:
self._waiting = Deferred()
self._waiting.addBoth(self._deliverWaiting)
self.original.deliverBody(
_BodyBufferingProtocol(
protocol,
self._buffer,
self._waiting
)
)
elif self._finished:
for segment in self._buffer:
protocol.dataReceived(segment)
protocol.connectionLost(self._reason)
else:
self._waiters.append(protocol)
class HTTPClient(object):
def __init__(self, agent, cookiejar=None,
data_to_body_producer=IBodyProducer):
self._agent = agent
self._cookiejar = cookiejar or cookiejar_from_dict({})
self._data_to_body_producer = data_to_body_producer
def get(self, url, **kwargs):
return self.request('GET', url, **kwargs)
def put(self, url, data=None, **kwargs):
return self.request('PUT', url, data=data, **kwargs)
def patch(self, url, data=None, **kwargs):
return self.request('PATCH', url, data=data, **kwargs)
def post(self, url, data=None, **kwargs):
return self.request('POST', url, data=data, **kwargs)
def head(self, url, **kwargs):
return self.request('HEAD', url, **kwargs)
def delete(self, url, **kwargs):
return self.request('DELETE', url, **kwargs)
def request(self, method, url, **kwargs):
method = method.encode('ascii').upper()
# Join parameters provided in the URL
# and the ones passed as argument.
params = kwargs.get('params')
if params:
url = _combine_query_params(url, params)
if isinstance(url, unicode):
url = url.encode('ascii')
# Convert headers dictionary to
# twisted raw headers format.
headers = kwargs.get('headers')
if headers:
if isinstance(headers, dict):
h = Headers({})
for k, v in headers.items():
if isinstance(k, unicode):
k = k.encode('ascii')
if isinstance(v, bytes):
h.addRawHeader(k, v)
elif isinstance(v, unicode):
h.addRawHeader(k, v.encode('ascii'))
elif isinstance(v, list):
cleanHeaders = []
for item in v:
if isinstance(item, unicode):
cleanHeaders.append(item.encode('ascii'))
else:
cleanHeaders.append(item)
h.setRawHeaders(k, cleanHeaders)
else:
h.setRawHeaders(k, v)
headers = h
else:
headers = Headers({})
# Here we choose a right producer
# based on the parameters passed in.
bodyProducer = None
data = kwargs.get('data')
files = kwargs.get('files')
if files:
# If the files keyword is present we will issue a
# multipart/form-data request as it suits better for cases
# with files and/or large objects.
files = list(_convert_files(files))
boundary = str(uuid.uuid4()).encode('ascii')
headers.setRawHeaders(
b'content-type', [
b'multipart/form-data; boundary=' + boundary])
if data:
data = _convert_params(data)
else:
data = []
bodyProducer = multipart.MultiPartProducer(
data + files, boundary=boundary)
elif data:
# Otherwise stick to x-www-form-urlencoded format
# as it's generally faster for smaller requests.
if isinstance(data, (dict, list, tuple)):
headers.setRawHeaders(
b'content-type', [b'application/x-www-form-urlencoded'])
data = urlencode(data, doseq=True)
bodyProducer = self._data_to_body_producer(data)
cookies = kwargs.get('cookies', {})
if not isinstance(cookies, CookieJar):
cookies = cookiejar_from_dict(cookies)
cookies = merge_cookies(self._cookiejar, cookies)
wrapped_agent = CookieAgent(self._agent, cookies)
if kwargs.get('allow_redirects', True):
wrapped_agent = RedirectAgent(wrapped_agent)
wrapped_agent = ContentDecoderAgent(wrapped_agent,
[(b'gzip', GzipDecoder)])
auth = kwargs.get('auth')
if auth:
wrapped_agent = add_auth(wrapped_agent, auth)
d = wrapped_agent.request(
method, url, headers=headers,
bodyProducer=bodyProducer)
timeout = kwargs.get('timeout')
if timeout:
delayedCall = default_reactor(kwargs.get('reactor')).callLater(
timeout, d.cancel)
def gotResult(result):
if delayedCall.active():
delayedCall.cancel()
return result
d.addBoth(gotResult)
if not kwargs.get('unbuffered', False):
d.addCallback(_BufferedResponse)
return d.addCallback(_Response, cookies)
def _convert_params(params):
if hasattr(params, "iteritems"):
return list(sorted(params.iteritems()))
elif hasattr(params, "items"):
return list(sorted(params.items()))
elif isinstance(params, (tuple, list)):
return list(params)
else:
raise ValueError("Unsupported format")
def _convert_files(files):
"""Files can be passed in a variety of formats:
* {'file': open("bla.f")}
* {'file': (name, open("bla.f"))}
* {'file': (name, content-type, open("bla.f"))}
* Anything that has iteritems method, e.g. MultiDict:
MultiDict([(name, open()), (name, open())]
Our goal is to standardize it to unified form of:
* [(param, (file name, content type, producer))]
"""
if hasattr(files, "iteritems"):
files = files.iteritems()
elif hasattr(files, "items"):
files = files.items()
for param, val in files:
file_name, content_type, fobj = (None, None, None)
if isinstance(val, tuple):
if len(val) == 2:
file_name, fobj = val
elif len(val) == 3:
file_name, content_type, fobj = val
else:
fobj = val
if hasattr(fobj, "name"):
file_name = FilePath(fobj.name).basename()
if not content_type:
content_type = _guess_content_type(file_name)
yield (param, (file_name, content_type, IBodyProducer(fobj)))
def _combine_query_params(url, params):
parsed_url = urlparse(url.encode('ascii'))
qs = []
if parsed_url.query:
qs.extend([parsed_url.query, b'&'])
qs.append(urlencode(params, doseq=True))
return urlunparse((parsed_url[0], parsed_url[1],
parsed_url[2], parsed_url[3],
b''.join(qs), parsed_url[5]))
def _from_bytes(orig_bytes):
return FileBodyProducer(BytesIO(orig_bytes))
def _from_file(orig_file):
return FileBodyProducer(orig_file)
def _guess_content_type(filename):
if filename:
guessed = mimetypes.guess_type(filename)[0]
else:
guessed = None
return guessed or 'application/octet-stream'
registerAdapter(_from_bytes, bytes, IBodyProducer)
registerAdapter(_from_file, BytesIO, IBodyProducer)
if not _PY3:
from StringIO import StringIO
registerAdapter(_from_file, StringIO, IBodyProducer)
registerAdapter(_from_file, file, IBodyProducer)
else:
import io
# file()/open() equiv on Py3
registerAdapter(_from_file, io.BufferedReader, IBodyProducer)
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