rayhpeng
680f044e58
refactor(schedule): move schedule_spec translation onto its owners
...
`spec_column.py` and `spec_wire.py` were the same 60 lines twice, kept in
sync by a parity suite. Both are gone; what they did is now split along the
line that actually separates the two boundaries.
Why two files existed
---------------------
They were one module until the slice split it, and the reason given for the
split holds: a primary adapter must not import a secondary one, and the two
shapes are equal only by coincidence. But that argument only requires the two
*shapes* to be independent -- it does not require the parsing *rule* to be
written twice, and writing it twice is what needed `test_schedule_spec_parity`
to assert the two agreed, down to identical error text.
Splitting it properly
---------------------
`ScheduleSpec.from_primitives(schedule_type, *, cron, run_at, timezone)` takes
four strings, not a `Mapping[str, Any]` -- the mapping was the thing that kept
this out of the domain, and four strings carry no transport or storage format
with them. It owns the whole rule: unknown type, missing or non-string field,
unparseable `run_at`, and (via __post_init__, unchanged) 5-field cron and
resolvable timezone. Values are checked rather than trusted, since both
callers read data a client can influence.
Each adapter keeps only what is genuinely its own -- which two keys its format
uses -- as private methods on the class that owns the boundary, matching how
`SqlFeedbackRepository` and AWS's own ports-and-adapters sample put the
conversion inside the adapter rather than beside it:
SqlScheduledTaskRepository._spec_from_row / _spec_to_column
models.ScheduledTaskCreateRequest.to_schedule / models._spec_to_wire
The emit direction stays duplicated, deliberately: it is three lines per side
with no rule in it, and the two are *allowed* to diverge -- one is an HTTP
contract, the other a storage format. Asserting they stay byte-identical was
a constraint neither side asked for, so that suite is not replaced.
The router stops building value objects
---------------------------------------
`create` passes `body.to_schedule()`. `update` passes
`body.to_schedule(current.schedule)`, replacing eight lines that re-emitted
the current spec to the wire shape purely to read defaults back out of it;
omitted parts now come off the value object directly.
Tests
-----
`test_schedule_spec_parity.py` is deleted (162 lines). Its structural and
value cases moved to `TestFromPrimitives` in the domain suite -- stated once
now instead of parametrized over two implementations. Emit coverage was
already elsewhere: wire in `test_schedule_response_models`, column via the
repository round-trip in `test_schedule_fakes`.
One gap found while removing it: the `once` half of the update fallback had
no coverage on either side (both existing cases use cron), and it is exactly
the branch this commit rewrites -- `spec_to_wire(current)` round-trip to
`current.run_at.isoformat()`. Added
`test_a_timezone_change_on_a_once_task_keeps_the_same_instant`, and confirmed
by mutation that it is the only case that catches that branch breaking.
Behaviour is unchanged: same wire shapes, same normalizations (whitespace in
cron, trailing Z re-emitted as +00:00), same error messages, so the 422
details clients see do not move.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
2026-07-28 20:03:15 +08:00
..
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