Thomas Trompette
4ff9cba76d
## Context Sentry [TWENTY-SERVER-60Y](https://twenty-v7.sentry.io/issues/6633503406) ("Permission Denied: Entity performing the request does not have permission") is still firing at full rate on `v2.25.0`: ~10.8k events in the last 7 days, 24k total. #23104 tried to fix it by registering `PermissionsGraphqlApiExceptionFilter` globally via `APP_FILTER`. That registration is correct but **inert in production**, and the integration test added alongside it passes for a reason unrelated to prod behaviour. ## Root cause `main.ts` registered a catch-all filter after bootstrap: ```ts app.useGlobalFilters(new UnhandledExceptionFilter()); ``` Nest builds each resolver's filter list as `[...global, ...class, ...method]`, reverses it, and selects **exactly one** matching filter — there is no chaining. `APP_FILTER` providers are collected during module scan; `useGlobalFilters` appends after that, so the catch-all ended up at the head of the list: ``` 1. UnhandledExceptionFilter @Catch() <- matches everything, wins 2. PermissionsGraphqlApiExceptionFilter <- never reached 3. BillingGraphqlApiExceptionFilter <- never reached ``` On a GraphQL host `UnhandledExceptionFilter` then no-ops: `host.switchToHttp().getResponse()` returns the GraphQL args object, `response.header` is undefined, so it hits `return;`. Nest treats a falsy return as unhandled and rethrows the original `PermissionsException`, which reaches the Yoga error hook as a non-`BaseGraphQLError`, is serialized `INTERNAL_SERVER_ERROR`, and is reported by `shouldCaptureException`. The 28 resolvers carrying `@UseFilters(PermissionsGraphqlApiExceptionFilter)` were unaffected — method-level filters are evaluated before globals. Only the resolvers relying on the global registration leaked, which is exactly the set showing up in Sentry (`findOneApplication`, `uploadFilesFieldFileByUniversalIdentifier`, `UpdatePageLayoutWithTabsAndWidgets`, ...). Two other global filters were shadowed the same way and have never run: `BillingGraphqlApiExceptionFilter` and `FlatEntityMapsGraphqlApiExceptionFilter`. ## Why the existing test did not catch it `test/integration/utils/create-app.ts` builds the app from `AppModule` directly and never executes `main.ts`, so `useGlobalFilters` does not exist in the test process. It registered `MockedUnhandledExceptionFilter` as an `APP_FILTER` on the root testing module, which is collected *first* and therefore evaluated *last* — the exact inverse of production precedence. The `findOneApplication` denial test passed while the same query kept reporting to Sentry. ## Fix Register `UnhandledExceptionFilter` through `APP_FILTER` on `AppModule`. Root-module providers are scanned first, so it is collected first and evaluated last. The filter stays global, stays catch-all, and keeps its CORS-header role for HTTP; it simply no longer cuts in front of the typed filters. Un-shadowing the other two global filters means they now actually run, so `FileStorageExceptionFilter` and `FlatEntityMapsGraphqlApiExceptionFilter` get the `host.getType() !== 'graphql'` rethrow that `Billing` and `Permissions` already had. Without it they would start throwing GraphQL error objects into the REST pipeline. `MockedUnhandledExceptionFilter` is removed: `AppModule` now supplies the real filter in the same position, so the mock was dead weight. ## Test Verified against a real server (not the integration harness), calling the exact document from Sentry event `8d19eb7c` as a member with no permission flags: ``` query ($v1:UUID){findOneApplication(id:$v1){applicationVariables{key,value}}} ``` | | response code | exceptions captured | |---|---|---| | before | `INTERNAL_SERVER_ERROR` | 1 | | after | `FORBIDDEN` | 0 | Capture count measured through the console exception-handler driver, i.e. the same `captureExceptions` call site that is the Sentry driver in production. New unit spec `src/filters/__tests__/unhandled-exception.filter.spec.ts` boots a Nest + Yoga app both ways: it asserts `FORBIDDEN` with the `APP_FILTER` registration, and pins the shadowing behaviour of `app.useGlobalFilters` so the pattern cannot come back unnoticed. `granular-settings-permissions.integration-spec.ts` passes (10/10). Note it also passes *without* this fix — the harness cannot observe bootstrap-only configuration, which is the underlying reason #23104 shipped green. Closing that gap properly means sharing the post-`create` bootstrap between `main.ts` and `create-app.ts`; left as a follow-up. `file-storage-exception-filter.spec.ts` extended with a non-GraphQL host case. ## CI follow-up `failing-file-by-id-download.integration-spec.ts` snapshots were updated. That REST endpoint's 403 body changed in tests from `{}` to `{"statusCode":403,"error":"Forbidden","message":"Forbidden resource"}`. The old `{}` was an artifact of the mock: `MockedUnhandledExceptionFilter` rethrew, the exception escaped Nest's handler into Express's default error handler, and supertest saw an empty body. Production has always run the real `UnhandledExceptionFilter`, which writes `response.status(status).json(exception.response)` — the new snapshot. Production HTTP behaviour is unchanged by this PR: no other global filter matches an `HttpException` (the typed ones rethrow outside GraphQL), so the same filter handles it whether it is evaluated first or last.
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