a8a91ef38c
This commit introduces the `aio` package, which is a wrapper over
Kenneth Reitz 'requests' library.
It will be needed to 'watch' Kubernetes API endpoints.
It also comes with command line utility to test connections and
responses. For instance, run:
python -m kuryr_kubernetes.aio.methods get http://localhost:8080
To see Kubernetes API root resource response.
It may make sense to put it in a separated library or in kuryr-lib, but
for now and for the sake of push other patches quick, it is better to be
included here.
Partial-Implements: blueprint kuryr-k8s-integration
Change-Id: Iea64d7c7941351d6e0511cafde8914b86c457b1b
Authored-By: Antoni Segura Puimedon
Co-Authored-By: Jaume Devesa <devvesa@gmail.com>
Signed-off-by: Jaume Devesa <devvesa@gmail.com>
69 lines
2.4 KiB
Python
69 lines
2.4 KiB
Python
# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from asyncio import streams
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class ChunkedStreamReader(streams.StreamReader):
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async def readchunk(self): # flake8: noqa
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"""Modified asyncio.streams.readline for http chunks
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Returns an HTTP1.1 chunk transfer encoding chunk. Returns None if it is
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the trailing chunk.
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"""
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if self._exception is not None:
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raise self._exception
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chunk_size = bytearray()
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chunk = bytearray()
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size = None
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sep = b'\r\n'
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while size != 0:
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while self._buffer and size is None:
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ichar = self._buffer.find(sep)
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if ichar < 0:
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chunk_size.extend(self._buffer)
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self._buffer.clear()
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else: # size present
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chunk_size.extend(self._buffer[:ichar])
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size = int(bytes(chunk_size), 16)
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if size == 0: # Terminal chunk
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self._buffer.clear()
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self.feed_eof()
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return b''
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else:
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del self._buffer[:ichar + len(sep)]
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while self._buffer and size > 0:
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buff_size = len(self._buffer)
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if buff_size < size:
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chunk.extend(self._buffer)
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self._buffer.clear()
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size -= buff_size
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else:
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chunk.extend(self._buffer[:size])
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del self._buffer[:size + len(sep)] # delete also trailer
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size = 0
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if self._eof:
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break
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if size is None or size > 0:
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await self._wait_for_data('readchunk')
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elif size < 0:
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raise ValueError(_('Chunk wrongly encoded'))
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self._maybe_resume_transport()
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return bytes(chunk)
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