Examples: Adopt the structure used in hummingbird-examples

Author: euanh

Examples/HelloWorldHummingbird/Sources/main.swift renamed to Examples/HelloWorldHummingbird/Sources/App.swift

@@ -12,14 +12,23 @@
 //
 //===----------------------------------------------------------------------===//
 
-import Foundation
-import Hummingbird
+import ArgumentParser
 
-let myos = ProcessInfo.processInfo.operatingSystemVersionString
+@main
+struct Hello: AsyncParsableCommand {
+    @Option(name: .shortAndLong)
+    var hostname: String = "0.0.0.0"
 
-let router = Router()
-router.get { request, _ -> String in "Hello World, from Hummingbird on \(myos)\n" }
+    @Option(name: .shortAndLong)
+    var port: Int = 8080
 
-let app = Application(router: router, configuration: .init(address: .hostname("0.0.0.0", port: 8080)))
-
-try await app.runService()
+    func run() async throws {
+        let app = buildApplication(
+            configuration: .init(
+                address: .hostname(hostname, port: port),
+                serverName: "Hummingbird"
+            )
+        )
+        try await app.runService()
+    }
+}

Examples/HelloWorldHummingbird/Sources/Application+build.swift

@@ -0,0 +1,35 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the SwiftContainerPlugin open source project
+//
+// Copyright (c) 2025 Apple Inc. and the SwiftContainerPlugin project authors
+// Licensed under Apache License v2.0
+//
+// See LICENSE.txt for license information
+// See CONTRIBUTORS.txt for the list of SwiftContainerPlugin project authors
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+//===----------------------------------------------------------------------===//
+
+import Foundation
+import Hummingbird
+import Logging
+
+let myos = ProcessInfo.processInfo.operatingSystemVersionString
+
+func buildApplication(configuration: ApplicationConfiguration) -> some ApplicationProtocol {
+    let router = Router()
+    router.addMiddleware { LogRequestsMiddleware(.info) }
+    router.get("/") { _, _ in
+        return "Hello World, from Hummingbird on \(myos)\n"
+    }
+
+    let app = Application(
+        router: router,
+        configuration: configuration,
+        logger: Logger(label: "HelloWorldHummingbird")
+    )
+
+    return app
+}