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Investigate/test fetcher retries

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#2,842 3 comentarios 0 reacciones 0 asignados Ver en GitHub

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Evaluación

Dificultad
3/5
Tiempo estimado
1-2 días
Aptitud para principiantes
35/100
Tipo de issue
Error
Claridad
Necesita aclaración
Estado de actividad
Estancado
Stack tecnológico
python
Área
networking

Línea de trabajo

Empieza en tuf/ngclient/urllib3_fetcher.py, especialmente en _chunks, y sigue cómo download_file de tuf/ngclient/fetcher.py consume el flujo de respuesta. Reproduce el timeout de sigstore-probers si es posible e inspecciona el comportamiento de reintento de urllib3 al leer datos en streaming. Se considera terminado cuando se verifican los tres reintentos esperados ante fallos HTTP habituales o cuando el comportamiento ausente se identifica claramente con una cobertura de pruebas específica.

Escrito por el modelo de indexación a partir del texto del issue.

Descripción

I'm expecting urllib3 to retry 3 times on common http failures when using urllib3fetcher

There's an interesting failure in sigstore-probers where this does not seem to happen:

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/urllib3/response.py", line 754, in _error_catcher
    yield
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/urllib3/response.py", line 879, in _raw_read
    data = self._fp_read(amt, read1=read1) if not fp_closed else b""
           ~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/urllib3/response.py", line 862, in _fp_read
    return self._fp.read(amt) if amt is not None else self._fp.read()
           ~~~~~~~~~~~~~^^^^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/http/client.py", line 479, in read
    s = self.fp.read(amt)
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/socket.py", line 719, in readinto
    return self._sock.recv_into(b)
           ~~~~~~~~~~~~~~~~~~~~^^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/ssl.py", line 1304, in recv_into
    return self.read(nbytes, buffer)
           ~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/ssl.py", line 1138, in read
    return self._sslobj.read(len, buffer)
           ~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
TimeoutError: The read operation timed out

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/opt/hostedtoolcache/Python/3.13.4/x64/bin/tuf-on-ci-test-client", line 8, in <module>
    sys.exit(client())
             ~~~~~~^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/click/core.py", line 1161, in __call__
    return self.main(*args, **kwargs)
           ~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/click/core.py", line 1082, in main
    rv = self.invoke(ctx)
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/click/core.py", line 1443, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/click/core.py", line 788, in invoke
    return __callback(*args, **kwargs)
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/tuf_on_ci/client.py", line 84, in client
    updater.refresh()
    ~~~~~~~~~~~~~~~^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/tuf/ngclient/updater.py", line 170, in refresh
    self._load_timestamp()
    ~~~~~~~~~~~~~~~~~~~~^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/tuf/ngclient/updater.py", line 425, in _load_timestamp
    data = self._download_metadata(
        Timestamp.type, self.config.timestamp_max_length
    )
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/tuf/ngclient/updater.py", line 313, in _download_metadata
    return self._fetcher.download_bytes(url, length)
           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/tuf/ngclient/fetcher.py", line 139, in download_bytes
    with self.download_file(url, max_length) as dl_file:
         ~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/contextlib.py", line 141, in __enter__
    return next(self.gen)
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/tuf/ngclient/fetcher.py", line 102, in download_file
    for chunk in chunks:
                 ^^^^^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/tuf/ngclient/urllib3_fetcher.py", line 105, in _chunks
    yield from response.stream(self.chunk_size)
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/urllib3/response.py", line 1066, in stream
    data = self.read(amt=amt, decode_content=decode_content)
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/urllib3/response.py", line 955, in read
    data = self._raw_read(amt)
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/urllib3/response.py", line 878, in _raw_read
    with self._error_catcher():
         ~~~~~~~~~~~~~~~~~~~^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/contextlib.py", line 162, in __exit__
    self.gen.throw(value)
    ~~~~~~~~~~~~~~^^^^^^^
  File "/opt/hostedtoolcache/Python/3.13.4/x64/lib/python3.13/site-packages/urllib3/response.py", line 759, in _error_catcher
    raise ReadTimeoutError(self._pool, None, "Read timed out.") from e  # type: ignore[arg-type]
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
urllib3.exceptions.ReadTimeoutError: HTTPSConnectionPool(host='tuf-repo-cdn.sigstore.dev', port=443): Read timed out.
Lenguaje dominante
Python
Estrellas
1.7k
Forks
304
Merge medio
9 h 25 min
PR fusionados (30 d)
14

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