Project updates from Template (#1)
This PR contains the latest updates from the generic Website template, which have been added while working on #loud-amsterdam. Reviewed-on: #1 Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
This commit was merged in pull request #1.
This commit is contained in:
@@ -16,7 +16,8 @@ import WebsiteLibrary
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/// band (so a shared database is never migrated on boot).
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/// - Parameter reader: the configuration reader the values are read from.
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/// - Returns: the configured application, ready to run as a service.
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/// - Throws: an error when the persistence service cannot be built (e.g. its TLS context fails to build).
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/// - Throws: a ``ConfigError`` when a `database.*` key holds an unrecognized token, or an error when the persistence service cannot be built
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/// (e.g. its TLS context fails to build).
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func application(
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reader: ConfigReader
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) async throws -> some ApplicationProtocol {
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@@ -34,8 +35,9 @@ func application(
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logger.warning("String Catalog is \(isCatalogMissing ? "missing" : "undecodable"); pages will serve raw localization keys")
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}
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let driver = try reader.driver
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let persistence = try Service(
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driver: reader.driver,
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driver: driver,
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logger: logger
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)
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let fluent = persistence()
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@@ -52,8 +54,12 @@ func application(
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analytics: reader.analytics,
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cacheControl: reader.cacheControl,
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compressionMinResponseSize: reader.compressionMinResponseSize,
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httpsRedirect: reader.httpsRedirect,
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rateLimit: reader.rateLimit,
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securityHeaders: reader.securityHeaders,
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// An unset origin leaves the pages without canonical URLs and language alternates, rather than
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// building both against an empty host.
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siteOrigin: reader.siteOrigin.isEmpty ? nil : reader.siteOrigin,
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logLevel: reader.logLevel,
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probe: Probe(fluent: fluent)
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),
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@@ -67,7 +73,7 @@ func application(
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// The in-memory backend is recreated on every launch, so it is migrated on startup. The PostgreSQL backend is
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// left untouched here: a shared database is migrated out of band to avoid multi-instance races.
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if case .inMemory = reader.driver {
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if case .inMemory = driver {
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app.beforeServerStarts {
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try await fluent.migrate()
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}
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@@ -90,7 +96,7 @@ func migration(
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logLevel: reader.logLevel
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)
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let service = try Service(
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driver: reader.driver,
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driver: try reader.driver,
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logger: logger
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)
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@@ -135,22 +141,28 @@ private func logger(
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/// Builds the application's router.
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///
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/// Registers the request-logging middleware, the security-headers middleware that stamps the given `securityHeaders` onto every response, the
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/// vary middleware that marks every response as varying on `Accept-Encoding`, the response-compression middleware that compresses responses
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/// HTTPS-redirect middleware that bounces requests forwarded over plain HTTP to the canonical origin, the trailing-slash redirect middleware that
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/// collapses each path onto its canonical form, the vary middleware that marks every response as varying on `Accept-Encoding`, the response-compression middleware that compresses responses
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/// larger than `minimumResponseSizeToCompress` when the client advertises support, the localization middleware that negotiates the request's
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/// language from its `Accept-Language` header, the not-found middleware that serves the error page, and the static file middleware that serves the
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/// language from its `Accept-Language` header (honouring the `lang` query override and the language a leading path segment names), the
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/// not-found middleware that serves the not-found page, and the static file middleware that serves the
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/// contents of `staticFilesPath` (tagging responses with the given `cacheControl` directives), then adds the `RootController` routes that
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/// render the landing page, and the `HealthController` routes that serve the health check.
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/// render the landing page — one per language the String Catalog serves — and the `HealthController` routes that serve the health check.
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///
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/// The security-headers middleware sits just inside request logging so it covers every response that reaches a client — the landing page, the compressed
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/// responses, the rendered error page, and the served static files.
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/// responses, the rendered not-found page, and the served static files. The HTTPS redirect sits directly beneath it, so a redirect carries the security
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/// headers but skips the negotiation, compression, and file lookup it would otherwise pay for. The trailing-slash redirect follows it, ahead of the
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/// routes and `FileMiddleware` that would otherwise answer both spellings of every path.
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/// - Parameters:
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/// - staticFilesPath: the folder, relative to the working directory, the static files are served from.
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/// - assetVersion: the version token the pages append to their asset URLs, or `nil` to leave them unversioned.
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/// - analytics: the analytics tracker both pages embed, or `nil` to omit it.
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/// - cacheControl: the cache-control directives applied to the served static files.
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/// - compressionMinResponseSize: the minimum response body size, in bytes, before compression is applied.
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/// - rateLimit: the rate limit applied to the rate-limited routes.
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/// - httpsRedirect: the origin plain-HTTP requests are redirected to, and whether the forwarded-protocol header is trusted.
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/// - rateLimit: the rate limit configuration, currently applied to no route.
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/// - securityHeaders: the security headers applied to every response.
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/// - siteOrigin: the public origin the pages derive their canonical URLs and language alternates from, or `nil` to omit them.
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/// - logLevel: the level the request-logging middleware logs at.
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/// - probe: the probe consulted by the `HealthController` readiness route.
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/// - Returns: the configured router.
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@@ -160,8 +172,10 @@ private func router(
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analytics: Analytics?,
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cacheControl: CacheControl,
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compressionMinResponseSize: Int,
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httpsRedirect: HTTPSRedirectMiddleware<AppRequestContext>.Configuration,
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rateLimit: RateLimitMiddleware<AppRequestContext>.Configuration,
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securityHeaders: SecurityHeadersMiddleware<AppRequestContext>.Configuration,
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siteOrigin: String?,
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logLevel: Logger.Level,
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probe: Probe
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) -> Router<AppRequestContext> {
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@@ -177,6 +191,10 @@ private func router(
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SecurityHeadersMiddleware(
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configuration: securityHeaders
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)
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HTTPSRedirectMiddleware(
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configuration: httpsRedirect
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)
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TrailingSlashRedirectMiddleware()
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VaryMiddleware()
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ResponseCompressionMiddleware(
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minimumResponseSizeToCompress: compressionMinResponseSize
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@@ -195,6 +213,7 @@ private func router(
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router.addController {
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RootController<AppRequestContext>(
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assetVersion: assetVersion,
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siteOrigin: siteOrigin,
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analytics: analytics
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)
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HealthController<AppRequestContext>(
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@@ -56,10 +56,15 @@ package extension ConfigReader {
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/// The `Cache-Control` policy applied to static files, grouped by media type.
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///
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/// The max-ages are read from the `cache.maxAge.asset`, `cache.maxAge.text`, `cache.maxAge.image`, and
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/// `cache.maxAge.default` keys. Stylesheets and scripts are referenced through fingerprinted URLs (see `FingerprintAssets`) and
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/// fonts are immutable subset files, so all three are served long-lived and `immutable` — a deploy busts them by changing the URL, never by
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/// revalidation. The remaining text files (e.g. `robots.txt`) keep their unversioned URLs and require revalidation once stale; images and
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/// everything else are served public with their max-age alone. The groups match in order, so the specific types precede the `text` category.
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/// `cache.maxAge.default` keys. Stylesheets, scripts, videos, JPEGs, and WebPs are referenced through fingerprinted URLs (see
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/// `FingerprintAssets`) and fonts are immutable subset files, so all of them are served long-lived and `immutable` — a deploy busts them by
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/// changing the URL, never by revalidation. The remaining text files (e.g. `robots.txt`) keep their unversioned URLs and require revalidation
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/// once stale; the remaining images cannot be `immutable` — the group covers the icons, and a browser fetches `/favicon.ico` unversioned
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/// whatever the markup says — and everything else is served public with its max-age alone. The groups match in order, so the specific types
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/// precede the `text` and `image` categories.
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///
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/// - Important: an image the markup references without a `?v=` token must be in neither JPEG nor WebP, or it is served immutable for a year and
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/// a deploy cannot dislodge it.
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var cacheControl: CacheControl {
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let maxAgeAsset = int(
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forKey: .Cache.maxAgeAsset,
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@@ -82,6 +87,9 @@ package extension ConfigReader {
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(.textCss, [.public, .maxAge(maxAgeAsset), .immutable]),
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(.textJavascript, [.public, .maxAge(maxAgeAsset), .immutable]),
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(.font, [.public, .maxAge(maxAgeAsset), .immutable]),
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(.videoMp4, [.public, .maxAge(maxAgeAsset), .immutable]),
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(.imageJpeg, [.public, .maxAge(maxAgeAsset), .immutable]),
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(.imageWebp, [.public, .maxAge(maxAgeAsset), .immutable]),
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(.text, [.public, .maxAge(maxAgeText), .mustRevalidate]),
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(.image, [.public, .maxAge(maxAgeImage)]),
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(.init(type: .any), [.public, .maxAge(maxAgeDefault)]),
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@@ -100,51 +108,70 @@ package extension ConfigReader {
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///
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/// When `database.driver` selects PostgreSQL, the connection parameters are assembled from the `database.host`, `database.port`,
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/// `database.name`, `database.username`, `database.password` (empty when unset), `database.tls`,
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/// `database.pool.maxPerEventLoop`, and `database.pool.timeout` keys. Any other driver value falls back to the in-memory database.
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/// `database.pool.maxPerEventLoop`, and `database.pool.timeout` keys. Any token but `inMemory` and `postgres` throws a
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/// ``ConfigError``: a mistyped driver fails the boot rather than running on the in-memory database and discarding every write on restart.
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var driver: Driver {
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switch string(
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forKey: .Database.driver,
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default: .Database.driver
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) {
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case .Database.driverPostgres:
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return .postgres(
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.init(
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host: string(
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forKey: .Database.host,
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default: .Database.host
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),
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port: int(
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forKey: .Database.port,
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default: .Database.port
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),
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name: string(
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forKey: .Database.name,
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default: .Database.name
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),
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username: string(
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forKey: .Database.username,
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default: .Database.username
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),
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password: string(
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forKey: .Database.password,
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default: ""
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),
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tls: tls,
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maxConnectionsPerEventLoop: int(
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forKey: .Database.poolMaxPerEventLoop,
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default: .Database.poolMaxPerEventLoop
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),
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poolTimeout: .seconds(int(
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forKey: .Database.poolTimeout,
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default: .Database.poolTimeout
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))
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get throws {
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switch string(
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forKey: .Database.driver,
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default: .Database.driver
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) {
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case .Database.driverInMemory:
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return .inMemory
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case .Database.driverPostgres:
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return .postgres(
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.init(
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host: string(
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forKey: .Database.host,
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default: .Database.host
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),
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port: int(
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forKey: .Database.port,
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default: .Database.port
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),
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name: string(
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forKey: .Database.name,
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default: .Database.name
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),
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username: string(
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forKey: .Database.username,
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default: .Database.username
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),
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password: string(
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forKey: .Database.password,
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default: ""
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),
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tls: try tls,
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maxConnectionsPerEventLoop: int(
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forKey: .Database.poolMaxPerEventLoop,
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default: .Database.poolMaxPerEventLoop
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),
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poolTimeout: .seconds(int(
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forKey: .Database.poolTimeout,
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default: .Database.poolTimeout
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))
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)
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)
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)
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default:
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return .inMemory
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case let token:
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throw ConfigError.unknownDatabaseDriver(token)
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}
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}
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}
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/// The HTTPS redirect middleware configuration, built from the `https.trustForwardedProto` key and ``siteOrigin``.
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///
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/// Off by default, so a deployment without a proxy in front never redirects on a header its clients could have written themselves. The redirects
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/// point at ``siteOrigin`` — the same value the pages build their canonical URLs from, so the two cannot disagree.
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var httpsRedirect: HTTPSRedirectMiddleware<AppRequestContext>.Configuration {
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.init(
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origin: siteOrigin,
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trustForwardedProto: bool(
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forKey: .HTTPS.trustForwardedProto,
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default: false
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)
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)
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}
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/// The minimum log level the application emits at, read from the `log.level` key.
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///
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/// Falls back to `.info` when the key is unset or its value names no `Logger.Level` case.
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@@ -164,7 +191,7 @@ package extension ConfigReader {
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)
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}
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/// The rate limit applied to the subscription endpoint, built from the `rateLimit.*` keys.
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/// The rate limit built from the `rateLimit.*` keys; the template applies it to no route yet.
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///
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/// `rateLimit.limit` requests are admitted per client per `rateLimit.window` seconds. When `rateLimit.trustForwardedFor` is set,
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/// clients are keyed by the first `X-Forwarded-For` entry — enable it only behind a reverse proxy that sets the header, since clients can forge it
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@@ -226,6 +253,17 @@ package extension ConfigReader {
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)
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}
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/// The public origin the site is served at (scheme and host, no trailing slash), read from the `site.origin` key.
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///
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/// The redirects and any absolute links derive from it, so a staging deployment can point it at itself — or leave it unset — without the
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/// production origin leaking into its markup.
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var siteOrigin: String {
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string(
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forKey: .Site.origin,
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default: .Site.origin
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)
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}
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/// The directory the static files are served from, read from the `path.staticFiles` key.
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var staticFilesPath: String {
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string(
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@@ -242,16 +280,45 @@ private extension ConfigReader {
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// MARK: Properties
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/// The TLS posture for the PostgreSQL connection, mapped from the `database.tls` key: `off` and `require` map to their postures, and any
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/// other value falls back to `prefer`.
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/// The TLS posture for the PostgreSQL connection, mapped from the `database.tls` key.
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///
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/// Any token but `off`, `prefer`, and `require` throws a ``ConfigError``: a mistyped posture (`required`, say) fails the boot rather than
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/// falling back to `prefer`, which hands the password over in plaintext when the upgrade is stripped.
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var tls: TLS {
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switch string(
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forKey: .Database.tls,
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default: .Database.tls
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) {
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case .Database.tlsOff: .off
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case .Database.tlsRequire: .require
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default: .prefer
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get throws {
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switch string(
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forKey: .Database.tls,
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default: .Database.tls
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) {
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case .Database.tlsOff: .off
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case .Database.tlsPrefer: .prefer
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case .Database.tlsRequire: .require
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case let token: throw ConfigError.unknownDatabaseTLS(token)
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}
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}
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}
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}
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// MARK: - ConfigError
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/// A configuration value the executable refuses to boot with; ``description`` names the tokens the key accepts.
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package enum ConfigError: Error, Equatable, CustomStringConvertible {
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/// The `database.driver` key holds an unrecognized token.
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case unknownDatabaseDriver(String)
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/// The `database.tls` key holds an unrecognized token.
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case unknownDatabaseTLS(String)
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// MARK: Computed
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package var description: String {
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switch self {
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case .unknownDatabaseDriver(let token):
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"Unknown 'database.driver' value '\(token)': use '\(String.Database.driverInMemory)' or '\(String.Database.driverPostgres)'."
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case .unknownDatabaseTLS(let token):
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"Unknown 'database.tls' value '\(token)': use '\(String.Database.tlsOff)', '\(String.Database.tlsPrefer)', or '\(String.Database.tlsRequire)'."
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}
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}
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Block a user