Hands-On Server-Side Web Development with Swift

Setting up health check endpoints

All the implementations of endpoints are stored in the /Routes directory. In Kitura's basic template, a health check endpoint (/Routes/HealthRoutes.swift) is created as an example:

// File: /Routes/HealthRoutes.swiftimport LoggerAPIimport Healthimport KituraContractsfunc initializeHealthRoutes(app: App) {    app.router.get("/health") { (respondWith: (Status?, RequestError?) -> Void) -> Void in         if health.status.state == .UP {             respondWith(health.status, nil) // [1]         } else {             respondWith(nil, RequestError(.serviceUnavailable, body: health.status)) // [2]         }    }}

The Health endpoint exposes the health of the application. It responds to the health check request with a closure that returns a health.status structure: ...