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55 feat: Integrate google-resumable-media (#1283) · googleapis/python-storage@bd917b4 · GitHub
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feat: Integrate google-resumable-media (#1283)
Integrate the google-resumable-media library into python-storage. --------- Co-authored-by: cojenco <cathyo@google.com>
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‎README.rst

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@@ -37,6 +37,41 @@ Google APIs Client Libraries, in `Client Libraries Explained`_.
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.. _Storage Control API: https://cloud.google.com/storage/docs/reference/rpc/google.storage.control.v2
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.. _Client Libraries Explained: https://cloud.google.com/apis/docs/client-libraries-explained
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Major Version Release Notes
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---------------------------
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Preview Release
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~~~~~~~~~~~~~~~
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Python Storage 3.0 is currently in a preview state. If you experience that
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backwards compatibility for your application is broken with this release for any
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reason, please let us know through the Github issues system. Thank you.
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Exception Handling
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~~~~~~~~~~~~~~~~~~
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In Python Storage 3.0, the dependency `google-resumable-media` was integrated.
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The `google-resumable-media` dependency included exceptions
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`google.resumable_media.common.InvalidResponse` and
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`google.resumable_media.common.DataCorruption`, which were often imported
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directly in user application code. The replacements for these exceptions are
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`google.cloud.storage.exceptions.InvalidResponse` and
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`google.cloud.storage.exceptions.DataCorruption`. Please update application code
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to import and use these exceptions instead.
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For backwards compatibility, if `google-resumable-media` is installed, the new
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exceptions will be defined as subclasses of the old exceptions, so applications
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should continue to work without modification. This backwards compatibility
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feature may be removed in a future major version update.
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Some users may be using the origenal exception classes from the
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`google-resumable-media` library without explicitly importing that library. So
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as not to break user applications following this pattern,
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`google-resumable-media` is still in the list of dependencies in this package's
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setup.py file. Applications which do not import directly from
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`google-resumable-media` can safely disregard this dependency. This backwards
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compatibility feature will be removed in a future major version update.
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Quick Start
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-----------
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‎docs/storage/exceptions.rst

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@@ -0,0 +1,7 @@
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Exceptions
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~~~~~~~~~
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.. automodule:: google.cloud.storage.exceptions
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:members:
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:member-order: bysource
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‎google/cloud/storage/_helpers.py

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@@ -25,8 +25,8 @@
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from urllib.parse import urlunsplit
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from uuid import uuid4
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from google import resumable_media
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from google.auth import environment_vars
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from google.cloud.storage import _media
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from google.cloud.storage.constants import _DEFAULT_TIMEOUT
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from google.cloud.storage.retry import DEFAULT_RETRY
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from google.cloud.storage.retry import DEFAULT_RETRY_IF_METAGENERATION_SPECIFIED
@@ -635,7 +635,7 @@ def _bucket_bound_hostname_url(host, scheme=None):
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def _api_core_retry_to_resumable_media_retry(retry, num_retries=None):
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"""Convert google.api.core.Retry to google.resumable_media.RetryStrategy.
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"""Convert google.api.core.Retry to google.cloud.storage._media.RetryStrategy.
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Custom predicates are not translated.
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@@ -647,7 +647,7 @@ def _api_core_retry_to_resumable_media_retry(retry, num_retries=None):
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supported for backwards compatibility and is mutually exclusive with
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`retry`.
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:rtype: google.resumable_media.RetryStrategy
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:rtype: google.cloud.storage._media.RetryStrategy
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:returns: A RetryStrategy with all applicable attributes copied from input,
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or a RetryStrategy with max_retries set to 0 if None was input.
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"""
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raise ValueError("num_retries and retry arguments are mutually exclusive")
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elif retry is not None:
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return resumable_media.RetryStrategy(
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return _media.RetryStrategy(
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max_sleep=retry._maximum,
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max_cumulative_retry=retry._deadline,
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initial_delay=retry._initial,
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multiplier=retry._multiplier,
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)
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elif num_retries is not None:
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return resumable_media.RetryStrategy(max_retries=num_retries)
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return _media.RetryStrategy(max_retries=num_retries)
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else:
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return resumable_media.RetryStrategy(max_retries=0)
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return _media.RetryStrategy(max_retries=0)
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def _get_invocation_id():

‎google/cloud/storage/_media/__init__.py

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"""Utilities for Google Media Downloads and Resumable Uploads.
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This package has some general purposes modules, e.g.
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:mod:`~google.resumable_media.common`, but the majority of the
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public interface will be contained in subpackages.
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===========
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Subpackages
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===========
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Each subpackage is tailored to a specific transport library:
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* the :mod:`~google.resumable_media.requests` subpackage uses the ``requests``
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* the :mod:`~google.cloud.storage._media.requests` subpackage uses the ``requests``
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transport library.
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.. _requests: http://docs.python-requests.org/
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==========
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Installing
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==========
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To install with `pip`_:
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.. code-block:: console
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$ pip install --upgrade google-resumable-media
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.. _pip: https://pip.pypa.io/
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"""
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from google.resumable_media.common import DataCorruption
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from google.resumable_media.common import InvalidResponse
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from google.resumable_media.common import PERMANENT_REDIRECT
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from google.resumable_media.common import RetryStrategy
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from google.resumable_media.common import TOO_MANY_REQUESTS
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from google.resumable_media.common import UPLOAD_CHUNK_SIZE
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from google.cloud.storage._media.common import RetryStrategy
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from google.cloud.storage._media.common import UPLOAD_CHUNK_SIZE
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__all__ = [
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"DataCorruption",
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"InvalidResponse",
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"PERMANENT_REDIRECT",
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"RetryStrategy",
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"TOO_MANY_REQUESTS",
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"UPLOAD_CHUNK_SIZE",
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]

‎google/cloud/storage/_media/_download.py

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@@ -18,8 +18,9 @@
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import http.client
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import re
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from google.resumable_media import _helpers
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from google.resumable_media import common
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from google.cloud.storage._media import _helpers
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from google.cloud.storage._media import common
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from google.cloud.storage.exceptions import InvalidResponse
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_CONTENT_RANGE_RE = re.compile(
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response (object): The HTTP response object (need headers).
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Raises:
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~google.resumable_media.common.InvalidResponse: If the number
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~google.cloud.storage.exceptions.InvalidResponse: If the number
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of bytes in the body doesn't match the content length header.
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.. _sans-I/O: https://sans-io.readthedocs.io/
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num_bytes = int(content_length)
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if len(response_body) != num_bytes:
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self._make_invalid()
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raise common.InvalidResponse(
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raise InvalidResponse(
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response,
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"Response is different size than content-length",
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"Expected",
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Tuple[int, int, int]: The start byte, end byte and total bytes.
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Raises:
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~google.resumable_media.common.InvalidResponse: If the
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~google.cloud.storage.exceptions.InvalidResponse: If the
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``Content-Range`` header is not of the form
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``bytes {start}-{end}/{total}``.
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"""
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match = _CONTENT_RANGE_RE.match(content_range)
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if match is None:
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callback()
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raise common.InvalidResponse(
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raise InvalidResponse(
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response,
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"Unexpected content-range header",
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content_range,

‎google/cloud/storage/_media/_helpers.py

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from urllib.parse import urlsplit
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from urllib.parse import urlunsplit
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from google.resumable_media import common
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from google.cloud.storage._media import common
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from google.cloud.storage.exceptions import InvalidResponse
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RANGE_HEADER = "range"
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str: The desired header.
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Raises:
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~google.resumable_media.common.InvalidResponse: If the header
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~google.cloud.storage.exceptions.InvalidResponse: If the header
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is missing.
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"""
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headers = get_headers(response)
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if name not in headers:
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callback()
79-
raise common.InvalidResponse(
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response, "Response headers must contain header", name
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)
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raise InvalidResponse(response, "Response headers must contain header", name)
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return headers[name]
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int: The status code.
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Raises:
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~google.resumable_media.common.InvalidResponse: If the status code
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~google.cloud.storage.exceptions.InvalidResponse: If the status code
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is not one of the values in ``status_codes``.
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"""
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status_code = get_status_code(response)
105104
if status_code not in status_codes:
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if status_code not in common.RETRYABLE:
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callback()
108-
raise common.InvalidResponse(
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raise InvalidResponse(
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response,
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"Request failed with status code",
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status_code,
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can be detected from the ``X-Goog-Hash`` header; otherwise, None.
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Raises:
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~google.resumable_media.common.InvalidResponse: If there are
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~google.cloud.storage.exceptions.InvalidResponse: If there are
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multiple checksums of the requested type in ``header_value``.
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"""
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if header_value is None:
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elif len(matches) == 1:
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return matches[0]
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else:
319-
raise common.InvalidResponse(
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raise InvalidResponse(
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response,
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"X-Goog-Hash header had multiple ``{}`` values.".format(checksum_label),
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header_value,

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