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fix(coderd): invalidate chatd provider cache on AI provider changes (#26987)

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chatd subscribes to `ChatConfigEventChannel` and invalidates its
provider cache on a `providers` event kind, but nothing ever published
that kind. AI provider CRUD only publishes on
`AIProvidersChangedChannel` (consumed by aibridged and aibridgeproxyd),
so chatd's provider cache only converged via its 10 second TTL.

Subscribe chatd to the same `AIProvidersChangedChannel` publish instead
of adding a second publish, per the review feedback on #26207: one
publish, multiple subscribers. The now-unused `ChatConfigEventProviders`
kind is removed so `ChatConfigEvent` stays scoped to model configs, user
prompts, and advisor config, and can't regrow a dead subscriber.

Follow-up to CRF-5 from the review of #25673. Supersedes #26207.

Closes CODAGT-499
This commit is contained in:
Ethan
2026-07-07 00:20:54 +10:00
committed by GitHub
parent 7c78698a6d
commit 2cbc464c72
5 changed files with 47 additions and 12 deletions
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coderd/ai_providers.go
+2 -2
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@@ -492,8 +492,8 @@ func (api *API) aiProvidersDelete(rw http.ResponseWriter, r *http.Request) {
}
// publishAIProvidersChanged notifies subscribers (aibridged,
// aibridgeproxyd) that the live provider set changed and they should
// refetch from the database. Pubsub failures are logged but not
// aibridgeproxyd, chatd) that the live provider set changed and they
// should refetch from the database. Pubsub failures are logged but not
// propagated: subscribers refresh authoritatively from the DB, so a
// dropped notification only delays convergence.
func (api *API) publishAIProvidersChanged(ctx context.Context) {