Infrastructure

The shared Hummingbird toolkit the Loud services build on: declarative routing, hardened HTTP middlewares, pre-rendered localized HTML responses, and the page and asset scaffolding.

Overview

Role	Types
Routing	`RouterController`, `RouteCollectionBuilder`, the `addController` extension on `RouterMethods`
Middlewares	`SecurityHeadersMiddleware`, `VaryMiddleware`, `RateLimitMiddleware`, `LocalizationMiddleware`, `NotFoundMiddleware`
Pages and assets	`Page`, `Asset`, `AssetExtension`, `FingerprintAssets`
Link previews	`SocialCard`, its `Image`, and the `Tag` meta tags it derives
Structured data	`StructuredData`, the `Node`, `Property`, and `Value` types of its schema.org graph, and the open `Name` and `Kind` vocabularies
Analytics	`Analytics`, the tracker script `Attribute`s it derives, and the `origin` its preconnect hint targets
Responses	`CachedHTMLResponse`, `LocalizedHTMLCollectionResponse`
Contexts	`LocalizedRequestContext`
Constants	The `HTTPField.Name` header names, `Int.RateLimit` limits, and `String.Security` header values the middlewares default to

Design rules

The package holds only what every service can reuse; anything a service owns is injected, never referenced:

No site-specific content. No page markup, no asset catalog, no Bundle.module lookups. A type that needs a service's content takes it as a parameter: the bundle: whose String Catalog names the supported languages, the document: closure building a page for a locale, and a Page conformer's metadata plus its optional head concerns (summary, canonicalURL, socialCard, structuredData, analytics). URLs arrive fully formed and absolute; composing them stays with the page.
Types own their format; Page renders generically. Each head concern derives its own render-ready representation — SocialCard.tags, StructuredData.payload, Analytics.attributes — and Page applies it without knowing the vocabulary. Page scripts and the tracker render as deferred head tags, with a preconnect hint for the tracker's cross-origin host.
Services fill the gaps once, via extensions. A service restores its convenient call sites with retroactive extensions — the Website's *+Defaults extensions are the pattern. The open schema.org vocabularies extend the same way: the package declares the shared Property.Name and Node.Kind constants, and a service adds its own.
Method structs. Single-operation types such as FingerprintAssets hold their lifetime-fixed configuration in init and take only per-call inputs in callAsFunction.

Layout

Sources are split by visibility, then by kind, one type per file:

Sources/
├── Public/                public API
│   ├── Builders/          RouteCollectionBuilder
│   ├── Enumerations/      AssetExtension
│   ├── Extensions/        addController, plus the default header names and values
│   ├── Methods/           FingerprintAssets
│   ├── Middlewares/       the five HTTP middlewares
│   ├── Protocols/         Asset, LocalizedRequestContext, Page, RouterController
│   ├── Responses/         CachedHTMLResponse, LocalizedHTMLCollectionResponse
│   └── Types/             Analytics, SocialCard, StructuredData (the latter two nesting their own types in SocialCard/ and StructuredData/)
└── Internal/
    ├── Extensions/        implementation details (the String separators)
    └── Types/             implementation details (FNV1aHash)
Tests/
├── Cases/                 the test suites, mirroring the Sources/ layout
├── Catalogs/              the String Catalog fixture, copied verbatim so it loads on Linux
└── Utils/                 stubs (StubAsset, StubPage, …) and the suite Tag constants

Testing

Every suite carries a tag for the kind of API it exercises — .asset, .extension, .middleware, .protocol, or .type, declared in Tests/Utils/Extensions/Tag+Constants.swift — so test plans and summaries can slice a run by kind. A new suite adopts the tag matching its subject, or adds one when none fits.

Requirements

Swift 6.3 toolchain (swift-tools-version:6.3).
macOS 15, matching the sibling packages (the services deploy to Linux containers; the packages carry no UI platforms).

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