Eric Hare 61baba9499 fix(traces): bypass impl result_processor in _LegacyCaseEnum so legacy uppercase rows load (#13346)
* fix(traces): bypass impl result_processor in _LegacyCaseEnum to load legacy uppercase rows

The previous attempt at normalising legacy uppercase enum values failed
because ``TypeDecorator.result_processor`` chains the impl's
``result_processor`` *before* ``process_result_value``:

    impl (SQLEnum) -> process_result_value

SQLEnum's processor calls ``_object_value_for_elem`` which raises
``LookupError`` for any raw DB string not in the lowercase values list.
Pre-v1.9.2 trace/span rows persist the enum *names* (``'OK'``,
``'ERROR'``, ``'CHAIN'``...), so the impl's processor blew up before
``_LegacyCaseEnum.process_result_value`` had a chance to normalise the
value. The traces panel hit this on every read, returning 500 from the
backend with ``LookupError: 'OK' is not among the defined enum values``.

Override ``result_processor`` to skip the impl's processor entirely and
run only ``process_result_value`` against the raw DB string. Old rows
(uppercase names) and new rows (lowercase values) both round-trip
cleanly.

Adds an end-to-end ORM regression test that seeds a row through the
ORM, rewrites the enum column to the legacy uppercase form via raw SQL,
and asserts the ORM SELECT decodes it back to the right enum member.
The existing ``TestLegacyCaseEnumResultProcessor`` tests called
``process_result_value`` directly and missed this bug — the new tests
exercise the full SQLAlchemy result_processor pipeline.

Fixes #13318

* [autofix.ci] apply automated fixes

* [autofix.ci] apply automated fixes (attempt 2/3)

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
2026-05-26 21:47:39 +00:00
2025-03-20 00:05:55 +00:00
2026-04-23 17:49:53 -07:00
2026-04-13 23:23:37 +00:00
2026-05-12 14:13:46 +00:00

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