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feat(tx): run update re-fetch and post-commit hooks in a second transaction

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Re-fetch, BeforeScan and AfterUpdate/AfterCreate now run on a short
transaction that fires OnTxBegin. Existence selects inside the first
transaction use tx instead of the pool.
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warkanum
2026-09-30 22:42:33 +02:00
parent eb492d52aa
commit ce706bacda
5 changed files with 278 additions and 79 deletions
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audit/single_tran.md
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@@ -74,7 +74,7 @@
| 0 | DONE | Baseline: enable `dbtrace` on testserver, record `tx/tx_queries/pooled/raw` per op | `cmd/testserver`, `pkg/dbtrace` | pooled > 0 on write ops = the gaps above |
| 1 | DONE | Delete in one tx (single + batch, per-item hooks inside tx) | `resolvespec/handler.go`, `restheadspec/handler.go` | fixes 2 pool connections + race + RLS |
| 2 | DONE | `OnTxBegin` hook type + `runInTx` helper | `common/txhook.go`, `*/hooks.go`, `*/handler.go` | resolvespec + restheadspec; other specs in P4-6 |
| 3 | TODO | Insert/update post-commit hooks + re-fetch in second short `runInTx` (select only) | restheadspec `:1005, 1467, 1667-1674`; resolvespec `:1297, 1449, 1602` | per decision above |
| 3 | DONE | Insert/update post-commit hooks + re-fetch in second short `runInTx` (select only) | restheadspec `:1005, 1467, 1667-1674`; resolvespec `:1297, 1449, 1602` | per decision above |
| 4 | TODO | websocketspec + mqttspec: wrap read/create/update/delete in `runInTx` | `websocketspec/handler.go`, `mqttspec/handler.go` | mqttspec aliases websocketspec hooks; confirm `OnTxBegin` alias |
| 5 | TODO | resolvemcp: read + single create in tx | `resolvemcp/handler.go:253, 445` | verify batch/update/delete hooks run inside tx |
| 6 | TODO | funcspec: `OnTxBegin` (or once-per-tx `BeforeOp`), `BeforeResponse` via `runInTx` | `funcspec/function_api.go:337, 640` | |
@@ -86,8 +86,10 @@
- DONE infra: `sqlmock` delete tx tests (both specs); compose test server + `scripts/testserver-smoke.sh` (podman first); testmodels ids now serial.
- NOTE: restheadspec single delete still does the lookup before `BeforeDelete`; safe once `OnTxBegin` (P2) exists. An `AfterDelete` failure now rolls the delete back.
- DONE P2 (resolvespec + restheadspec): `common.TxHookName`, `common.TxContext` (`SetTx` only; no abort/context accessors needed since `Execute` already returns an error on abort), `common.RunRequestTx`; per-spec `OnTxBegin`, `HookContext.SetTx`, `Handler.runInTx`. Every `RunInTransaction` in both handlers now goes through it. Tests: `pkg/*/on_tx_begin_test.go` (once, first, on tx, failure rolls back). Not yet: the post-commit second tx (P3) and the security stamping registration (P7).
- FOUND (P3 scope): resolvespec batch update (`handler.go` ~`:1377`, `:1529`) reads existing record via `h.db.NewSelect()` inside the tx = pool connection; should be `tx`.
- NEXT: P3.
- DONE P3: restheadspec update re-fetch + `BeforeScan` + `AfterUpdate` and `AfterCreate` run in a second short `runInTx`; resolvespec update re-fetches (single, both batch paths) run in a second short `runInTx`. Fixed the pool reads inside the first tx (resolvespec single/batch update existing-record select, restheadspec update existence select) to use `tx`. Tests: `pkg/*/update_tx_test.go` (restheadspec uses the bun adapter; the pgsql adapter cannot build model-based updates).
- NOTE: resolvespec fires no `AfterCreate`/`AfterRead`/`AfterUpdate`-post-commit hooks other than `AfterUpdate` inside the tx; nothing more to move there.
- OPEN: restheadspec `AfterRead` still runs post-commit with `Tx = h.db` (`:1004`); decision says read has no second tx. Needs a call: run it inside the read tx, or in a short second tx.
- NEXT: P4.
## Tests
- Existing: per-spec `handler_test.go`, `hooks_test.go`, `integration_test.go`; models in `pkg/testmodels/business.go`; `dbtrace` unit tests.