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Author SHA1 Message Date
Weiko 70bb011daa fix: map FlatEntityMaps and WorkspaceMigrationRunner exceptions to proper status codes on REST and GraphQL (#20494) 
## Context

Calling `POST /rest/views` (and other metadata mutations) currently
returns a generic `500` for user-input failures:

Ex:
1. **Invalid `objectMetadataId`** —
`resolveEntityRelationUniversalIdentifiers` throws
`FlatEntityMapsException(RELATION_UNIVERSAL_IDENTIFIER_NOT_FOUND)`.
Should be `404`.
2. **Missing required field** (e.g. `icon`) — Postgres raises a `NOT
NULL` violation, wrapped as
`WorkspaceMigrationRunnerException(EXECUTION_FAILED)` carrying a
`QueryFailedError`. Should be `400`.

Neither was caught by `ViewRestApiExceptionFilter`, so both fell through
to `UnhandledExceptionFilter` and were emitted as `500`s without
reaching Sentry.
Same gap existed on most metadata GraphQL resolvers — only
`page-layout*` and `role` resolvers covered
`WorkspaceMigrationRunnerException` via
`WorkspaceMigrationGraphqlApiExceptionInterceptor`.

## Changes

### New filters

REST (`HttpExceptionHandlerService` + Sentry-aware):
- `FlatEntityMapsRestApiExceptionFilter` — maps
`RELATION_UNIVERSAL_IDENTIFIER_NOT_FOUND` / `ENTITY_NOT_FOUND` → `404`,
`ENTITY_ALREADY_EXISTS` → `409`, others → `500`.
- `WorkspaceMigrationRunnerRestApiExceptionFilter` — for
`EXECUTION_FAILED`, unwraps the underlying `metadata` /
`workspaceSchema` / `actionTranspilation` error; if it's a
`QueryFailedError` it gets remapped to `400` via
`HttpExceptionHandlerService`. `APPLICATION_NOT_FOUND` → `404`,
`DDL_LOCKED` → `503`, otherwise `500`.

GraphQL (graphql-errors + existing formatter):
- `FlatEntityMapsGraphqlApiExceptionFilter` — kept as the GraphQL-shaped
counterpart (`NotFoundError` / `InternalServerError`).
- `WorkspaceMigrationRunnerGraphqlApiExceptionFilter` — reuses
`workspaceMigrationRunnerExceptionFormatter` for parity with the
existing interceptor.

### Wiring

Filters are now declared **per controller / resolver** via `@UseFilters`
(no global `APP_FILTER` registration) so they participate in the normal
NestJS filter chain instead of being preempted by
`UnhandledExceptionFilter`.

REST:
- `view.controller.ts` — adds `FlatEntityMapsRestApiExceptionFilter` and
`WorkspaceMigrationRunnerRestApiExceptionFilter`.

GraphQL (14 resolvers, all that mutate flat entities):
- `FlatEntityMapsGraphqlApiExceptionFilter` added to: `view`,
`view-field`, `view-field-group`, `view-sort`, `view-group`,
`view-filter`, `view-filter-group`, `page-layout`, `page-layout-tab`,
`page-layout-widget`, `role`, `object-metadata`, `field-metadata`,
`index-metadata`.
- `WorkspaceMigrationRunnerGraphqlApiExceptionFilter` added to the same
list **except** the four already covered by
`WorkspaceMigrationGraphqlApiExceptionInterceptor` (`page-layout`,
`page-layout-tab`, `page-layout-widget`, `role`) — to avoid
double-handling.

## Why per-resolver / per-controller instead of global

Earlier attempt to register the filters globally via `APP_FILTER`
regressed: NestJS reverses the global filter list and
`selectExceptionFilterMetadata` is first-match-wins, so
`UnhandledExceptionFilter` (registered last via `app.useGlobalFilters`
in `main.ts`) ended up first in the iteration order and preempted every
domain-specific filter. The per-resolver / per-controller approach is
explicit and predictable.

## Before
<img width="953" height="450" alt="Screenshot 2026-05-12 at 15 31 40"
src="https://github.com/user-attachments/assets/3c3bc6a8-f6bc-4032-97d0-7243540cfb90"
/>


## After
<img width="1050" height="598" alt="Screenshot 2026-05-12 at 15 31 17"
src="https://github.com/user-attachments/assets/c66c9ce5-d1ea-4f1d-b2fe-07979e2261f7"
/>
<img width="1068" height="503" alt="Screenshot 2026-05-12 at 15 31 09"
src="https://github.com/user-attachments/assets/ddd9eed8-812b-47d6-96cb-b019b807991b"
/>
 2026-05-12 16:01:50 +00:00
Weiko 96bc3594a3 Serve frontend components (#17798) 
## Context
Ability to serve frontend component

See:
```typescript
curl -i 'http://localhost:3000/rest/front-components/35063b3f-bc4c-4358-8966-7762677802a3' \
--header 'Authorization: Bearer eyJhb...'
HTTP/1.1 200 OK
X-Powered-By: Express
Access-Control-Allow-Origin: *
Content-Type: application/javascript
Date: Mon, 09 Feb 2026 10:28:17 GMT
Connection: keep-alive
Keep-Alive: timeout=5
Transfer-Encoding: chunked

// react-globals:react/jsx-runtime
var jsx = globalThis.jsx;
var jsxs = globalThis.jsxs;
var Fragment = globalThis.React.Fragment;

// src/front-components/test.tsx
var RemoteComponents = globalThis.RemoteComponents;
var Component = () => {
  return /* @__PURE__ */ jsxs(RemoteComponents.HtmlDiv, { style: { padding: "20px", fontFamily: "sans-serif" }, children: [
    /* @__PURE__ */ jsx(RemoteComponents.HtmlH1, { children: "My new component!" }),
    /* @__PURE__ */ jsx(RemoteComponents.HtmlP, { children: "This is your front component: test" })
  ] });
};
var test_default = globalThis.jsx(Component, {});
export {
  test_default as default
};
//# sourceMappingURL=test.mjs.map
```

readFile_v2 returns a Node.js Stream object (Readable). Here we are
using stream pipeline which connects the readable stream (file) to the
writable stream (HTTP response) which efficiently streams the file
content directly to the HTTP response without loading the entire file
into memory. (in chunks, handling backpressure and closing the
connection when the file is fully sent)
 2026-02-09 14:52:14 +00:00