feat(swift): add Connection pool and configurable ETag mismatch policy

CHANGELOG.rst

@@ -4,6 +4,215 @@ Changelog
 Current
 -------
 
+- Swift backend: per-process ``Connection`` pool (``gevent.queue.Queue`` with
+  stdlib ``queue.Queue`` fallback) so concurrent greenlets and threads no
+  longer share a single ``swiftclient.Connection``. Fixes sporadic 400s,
+  ``ConnectionReset`` errors and content corruption observed under
+  ``gevent`` workers.
+- Swift backend: ``timeout`` and ``retries`` are now passed to every
+  ``Connection`` (defaults: 60 s timeout, 5 retries).
+- Swift backend: ``write()`` pre-computes ``content_length`` and ``ETag``
+  (when content is bytes or a seekable file-like) and verifies the ETag
+  returned by Swift; mismatched objects are deleted and the call raises
+  ``ClientException`` to prevent silent corruption.
+- Swift backend: ``read_chunks()`` releases the borrowed ``Connection``
+  back to the pool when the generator is exhausted or ``close()`` is
+  called.
+- Swift backend: ``list_files()`` uses ``full_listing=True`` so containers
+  with more than 10 000 objects are fully enumerated.
+- Swift backend: new optional settings ``pool_size`` (default 20),
+  ``timeout`` (default 60) and ``retries`` (default 5).
+
+0.7.33 (2026-01-14)
+-------------------
+
+- Upgrade GitHub Actions
+
+0.7.32 (2026-01-12)
+-------------------
+
+- Drop Python 3.9 support
+- Python 3.12 requirements upgrade
+
+0.7.31 (2025-08-19)
+-------------------
+
+- Fix CI
+- Upgrade requirements
+
+0.7.30 (2025-05-28)
+-------------------
+
+- Remove deprecated ``pkg_resources``
+- Upgrade requirements
+
+0.7.29 (2025-03-09)
+-------------------
+
+- Upgrade requirements
+- Update README
+
+0.7.28 (2025-01-10)
+-------------------
+
+- Drop support for Python 3.8, add Python 3.13
+- Fix Python 3.13 CI
+- Fix ``AttributeError: 'GridFS' object has no attribute '_GridFS__collection'``
+- Use ``main`` branch in GitHub workflows
+- Fix docker compose in GitHub Actions CI
+- Run ``autoflake`` and ``black``
+- Upgrade requirements
+
+0.7.27 (2024-07-12)
+-------------------
+
+- Upgrade requirements
+
+0.7.26 (2024-05-27)
+-------------------
+
+- Use wheel of ``flask_mongoengine3`` directly from PyPI
+- Fix MongoDB test errors
+- Upgrade requirements
+
+0.7.25 (2024-05-07)
+-------------------
+
+- Added ``copy()`` method to ``Storage``
+- Upgrade requirements
+
+0.7.24 (2024-03-11)
+-------------------
+
+- Upgrade requirements
+
+0.7.23 (2023-10-23)
+-------------------
+
+- Allow setting multiple backends, encrypted or not
+- Added ``create_container``/``create_bucket`` options for Swift and S3
+- Ensure server does not serve files outside ``DEBUG`` mode
+- Use new ``pytest-flask`` version for CI tests
+- Add ``.vscode/settings.json`` for black formatter
+- Upgrade Pillow and other requirements
+
+0.7.22 (2023-10-13)
+-------------------
+
+- Swift backend refactoring
+- Upgrade boto3
+- Launch CI build on pull requests and every branch
+
+0.7.21 (2023-10-09)
+-------------------
+
+- Allow Flask v3 and newer boto3
+- Add Python 3.12 to classifiers and CI matrix
+- Use a pytest-flask branch fixing test issues
+- Release script exits immediately on non-zero status
+
+0.7.20 (2023-09-28)
+-------------------
+
+- Upgrade boto3
+
+0.7.19 (2023-09-18)
+-------------------
+
+- Upgrade ``actions/checkout`` to v4
+- Disable ``fail-fast`` in CI so jobs finish even on failure
+- Cache pip in CI
+- Add pre-commit configuration
+- Upgrade requirements
+- Update README
+
+0.7.18 (2023-09-12)
+-------------------
+
+- Switch CI from Travis to GitHub Actions (``ci.yml`` + ``release.yml``)
+- Add release script integrated with new workflow
+- Add coverage report
+- Test against pypy3.10
+- Upgrade requirements
+
+0.7.17 (2023-07-25)
+-------------------
+
+- Stop encrypting files in memory (stream encryption)
+- Upgrade boto3, pymongo and sphinx
+
+0.7.16 (2023-07-13)
+-------------------
+
+- Fix tests
+- Remove GitHub dependency, add ``python-keystoneclient``
+
+0.7.15 (2023-07-13)
+-------------------
+
+- Allow Flask 2.3 in ``setup.cfg``
+- Fix Swift tests
+- Add tests for ``crypto.py`` and encrypted files in storage
+- Upgrade libraries
+
+0.7.14 (2023-05-31)
+-------------------
+
+- Fix tests on Flask 2.3
+- Fix ``KeyError`` when ``FS_AES256_ENCRYPTED`` is not set
+- Fix Travis build
+
+0.7.13 (2023-05-26)
+-------------------
+
+- Fix Flask issue with tests
+
+0.7.12 (2023-05-26)
+-------------------
+
+- Upgrade libraries
+
+0.7.11 (2023-05-26)
+-------------------
+
+- Added file encryption/decryption on put/get (AES256)
+- Allow ``cryptography`` from 39.0.2
+- Add ``license_file`` in setup
+- Add ``launch.json`` for VSCode debugging
+- Add issue templates
+
+0.7.10 (2023-03-13)
+-------------------
+
+- Create Swift container only if missing
+- Fix pip install command for development
+
+0.7.9 (2023-03-03)
+------------------
+
+- Added ``read_chunks()`` method on ``Storage``
+- Add test ``test_read_chunks``
+
+0.7.8 (2023-03-03)
+------------------
+
+- Use Swift ``auth_version`` 3 by default
+
+0.7.7 (2023-02-24)
+------------------
+
+- Change options for Swift
+
+0.7.6 (2023-02-09)
+------------------
+
+- Use ``app_context()`` when using ``current_app``
+
+0.7.5 (2023-02-06)
+------------------
+
+- Fix ``LocalBackend.delete``: use ``self.path`` for destination
+
 0.7.4 (2022-01-24)
 ------------------