Mobile Backends mit Swift

In diesen Talk untersuchen wir ob die junge und von Apple entwickelte Programmiersprache Swift sich für die Entwicklung von Mobile Backends eignet.

Transcript

1. Mobile Backends mit Swift
8. Zukunft?
10. Mobile Backends
11. Frontend–Backend In software engineering, front end and back end distinguish between the separation of concerns between the presentation layer (the front end) - which is the interface between the user - and the data access layer (the back end). The front and back ends may be distributed among one or more systems. — en.wikipedia.org
12. Mobile Backends Anforderungen
13. Remote Database
14. User Management
15. Push Notifications
16. Static Content Delivery
17. Remote Config
18. Analytics
19. …
20. MBaaS Mobile backend as a service (MBaaS),…, is a model for providing web app and mobile app developers with a way to link their applications to backend cloud storage and APIs exposed by back end applications while also providing features such as user management, push notifications, and integration with social networking services. — en.wikipedia.org
21. Homebrew vs. MBaaS
22. Firebase & Parse
23. Homebrew Sprache + Frameworks + Umgebung
24. Homebrew Ruby on Rails, Sinatra, express.js, Koa, Hapi, Spring Boot, Dropwizard
25. Swift
26. Eigenschaften → OOP, FP, POP → kompiliert → statisch, stark getypt → Block-Struktur → Designed for Safety
27. Historie → Juni 2014: Vorstellung von Swift → September 2014: – Version 1.0 → September 2015: Version 2.0 → Dezember 2015: Open Source Release → 14. September 2016: Version 3.0
28. Wo läuft Swift? → Darwin [iOS, macOS, tvOS, watchOS] → Linux → FreeBSD
29. Nutzung → Apple → IBM → Lyft, Arte-App, …
31. Features
32. Variablen & Konstanten
33. Variablen & Konstanten var foo: String foo = "Foobar" var bar = "Foobar" let car = "Ford"
34. Optionals?!
35. Optionals var person: String? if person == nil { print("person is nil") } person = "Peter" if let unwrappedPerson = person { print("The name is: \(unwrappedPerson)") }
36. Class, Struct, Enum & Protocol
37. Class, Struct, Enum & Protocol class BedCon { var year: Int init(year: Int) { self.year = year } } let bedcon = Bedcon(year: 2016)
38. Funktionen func calculateHard(number: Int, anotherNumber: Int) -> Int { return 1000 * number } calculateHard(number: 10, anotherNumber: 100)
39. Extensions
40. Extensions typealias Meter = Double extension Double { var km: Double { return self / 1_000.0 } } let twoThousandMeter = Meter(2000) let twoThousandMeterInKm = twoThousandMeter.km
41. Guards
42. Guards func fibonacci(number: Int) -> Int { guard number > 1 else { return number } return (fibonacci(number: number - 1) + fibonacci(number: number - 2)) } let number = fibonacci(number: 10)
43. Closures
44. Closures let numbers = ["321", "21", "1"] var sortedByLength = numbers.sorted(by: { (s1: String, s2: String) -> Bool in return s1.characters.count < s2.characters.count }) sortedByLength = numbers.sorted() { $0.characters.count < $1.characters.count }
45. Swift in der Zukunft → 2017 Veröffentlichung von Version 4 → Diskussionen bei Facebook & Google → Einsatz im Umfeld des Maschinellen Lernens?
46. Warum Swift im Backend?
48. Perfect, Kitura & Vapor
49. Perfect It provides everything a Swift engineer needs for developing lightweight, maintainable, and scalable apps and other REST services entirely in the Swift programming language for both client-facing and server-side applications. — perfect.org
50. Perfect → Simples Framework → Routing, Filtering, Templating, Static Files → FileMaker Connector
51. Perfect let server = HTTPServer() var routes = Routes() routes.add(method: .get, uri: "/path/one", handler: { request, response in response.setBody(string: "Handler was called") response.completed() }) server.addRoutes(routes) server.serverPort = 8181 server.documentRoot = "./webroot" do { try server.start() } catch PerfectError.networkError(let err, let msg) { print("Network error thrown: \(err) \(msg)") }
52. Kitura Kitura is a web framework and web server that is created for web services written in Swift. — https://github.com/IBM-Swift/Kitura
53. Kitura → Made by IBM → URL Routing → Static Files
54. Kitura import Kitura let router = Router() router.get("/") { request, response, next in response.send("Hello, World!") next() } router.all("/my/path", middleware: StaticFileServer(path: "./files")) Kitura.addHTTPServer(onPort: 8090, with: router) Kitura.run()
55. Vapor Vapor is the most used web framework for Swift. It provides a beautifully expressive and easy to use foundation for your next website or API. — https://github.com/vapor/vapor
56. Vapor → CLI → Routing → Middleware → ORM → Validators
57. Vapor import Vapor let drop = Droplet() drop.get("version") { request in return try Json(["version": "1.0"]) } drop.start()
58. Perfect vs. Kitura vs. Vapor
59. Features
60. Community
61. Deployment & Hosting → Lediglich ein Linux notwendig → Heroku & IBM Support → Docker – swiftlang/swift
62. Sollte ich Swift für mein Mobile Backend nutzen?
63. Swift & Frameworks
64. !
65. Q&A
66. Vielen Dank
67. Bilderquellen → Smartphone → Watch → Network → Segelboot & Wasser