Files
compiler-explorer/lib/app/server.interfaces.ts
Matt Godbolt (bot acct) 07226d33bf Reapply extraBodyClass-driven branding, validating via the manifest in production (#8935)
Reapplies #8755, which was reverted in 463e3e70f after it broke the
staging deploy:

```
error: Top-level error (shutting down): Missing branding assets for extraBodyClass='staging'
in /infra/.deploy/static: favicon-staging.ico, site-logo-staging.svg
```

### What went wrong

`validateBrandingAssets` checked `staticPath` on the local filesystem.
That's correct for dev and local prod runs, but AWS deploys ship **two**
packages (`build-dist.sh`): the node app tarball (no `static/` at all)
and the static bundle, which goes to the CDN
(`staticUrl=https://static.ce-cdn.net/`). Production nodes never have
the branding files on disk, so any env with `extraBodyClass` set
(staging, beta, win\*) died at startup. Prod itself has an empty
`extraBodyClass`, which is why the check short-circuited there and the
bug only surfaced on the staging deploy.

### The fix (second commit)

The webpack manifest **does** ship with the node app, and lists every
asset copied from `public/` into the static bundle. So in production,
validate the derived `favicon-<class>.ico` / `site-logo-<class>.svg`
names against **manifest keys** instead of the filesystem; dev keeps the
on-disk check against `public/`. This preserves the fail-fast-on-typo
behaviour #8755 wanted, checking the thing that actually describes what
shipped to the CDN. If the manifest can't be loaded we're already on the
existing warn-and-fall-back handler, so validation is skipped rather
than fatal.

`setupStaticMiddleware` now takes the parsed manifest (loaded once in
`setupWebServer` via new `loadStaticManifest`) instead of reading it
itself.

### Verification

- Fresh **production** webpack build: all six env asset pairs (dev,
beta, staging, winprod, winstaging, wintest) appear as plain-name keys
in `manifest.json` (the win\* symlink placeholders are dereferenced on
copy).
- Booted the built `out/dist` server code in the exact deploy layout
(`staticUrl` set, nonexistent `staticPath`, `extraBodyClass=staging`):
boots cleanly and renders `favicon-staging.ico` +
`site-logo-staging.svg`; a mistyped class still fails startup with a
clear error.
- New regression tests pin both behaviours at the `setupWebServer` level
with a shipped-manifest-only layout.

⚠️ Merge timing: prod's empty `extraBodyClass` never exercises this path
— the real test is the next **staging** deploy, so this should merge
when someone (me) is ready to deploy staging and watch it.

cc @partouf — sorry again for the breakage; this validates against the
manifest rather than expecting the CDN bundle's files on local disk.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: mattgodbolt-molty <mattgodbolt-molty@users.noreply.github.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
2026-07-20 21:37:49 +01:00

96 lines
3.4 KiB
TypeScript

// Copyright (c) 2025, Compiler Explorer Authors
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
import type {Express, Request, Response, Router} from 'express';
import type {GoldenLayoutRootStruct} from '../clientstate-normalizer.js';
import type {HttpController} from '../handlers/api/controller.interfaces.js';
import type {ShortLinkMetaData} from '../handlers/handler.interfaces.js';
import type {ClientOptionsSource} from '../options-handler.interfaces.js';
import type {PropertyGetter} from '../properties.interfaces.js';
import type {Sponsors} from '../sponsors.interfaces.js';
export interface ServerOptions {
staticPath: string;
staticMaxAgeSecs: number;
staticUrl?: string;
staticRoot: string;
httpRoot: string;
sentrySlowRequestMs: number;
manifestPath: string;
extraBodyClass: string;
maxUploadSize: string;
}
export interface PugOptions {
extraBodyClass: string;
httpRoot: string;
staticRoot: string;
storageSolution: string;
optionsHash: string;
compilerExplorerOptions: string;
}
export interface RenderConfig extends PugOptions {
embedded: boolean;
mobileViewer: boolean;
readOnly?: boolean;
config?: GoldenLayoutRootStruct;
metadata?: ShortLinkMetaData;
faviconFilename: string;
logoOverlayFilename?: string;
storedStateId?: string | false;
require?: PugRequireHandler;
sponsors?: Sponsors;
slides?: any[];
}
export type RenderConfigFunction = (extra: Record<string, any>, urlOptions?: Record<string, any>) => RenderConfig;
export type RenderGoldenLayoutHandler = (
config: GoldenLayoutRootStruct,
metadata: ShortLinkMetaData,
req: Request,
res: Response,
) => void;
export type PugRequireHandler = (path: string) => string;
export interface WebServerResult {
webServer: Express;
router: Router;
pugRequireHandler: PugRequireHandler;
renderConfig: RenderConfigFunction;
renderGoldenLayout: RenderGoldenLayoutHandler;
}
export interface ServerDependencies {
ceProps: PropertyGetter;
awsProps: PropertyGetter;
sponsorConfig: Sponsors;
clientOptionsHandler: ClientOptionsSource;
storageSolution: string;
healthcheckController: HttpController;
}