Nowe Dependency Injection w aplikacji Allegro iOS

Allegro Tech Live #17 (held in Polish)

W aplikacji Allegro dla kupujących mamy 90+ modułów. W prezentacji opowiem o tym jak je generujemy oraz jakie podejście obraliśmy aby zapewnić współdzielenie zależności pomiędzy tymi modułami. W nowym podejściu nie musimy tworzyć cross-zależności pomiędzy modułami co istotnie skraca czas kompilacji.

FB Event: https://www.facebook.com/events/447710906562080
Recording: https://www.youtube.com/watch?v=Ra5T7MbUXW0&t=4690s

Transcript

1. Nowe Dependency Injection w aplikacji Allegro iOS Allegro Tech Live #17 Maciej Piotrowski | MobileCore
2. Clean Build Time (s) 190 88 177 220 250 307 (Jun 2019 - April 2021) 238 59
3. Clean Build Time (s) 190 88 177 220 250 307 (Jun 2019 - April 2021) 238 59 94 moduły
4. Clean Build Time (s) 190 88 177 220 250 307 (Jun 2019 - April 2021) 238 czas kompilacji < 60 s 59 94 moduły
6. The Build iOS Conf SG 2021: Speeding up the build process of a monolithic application
7. The Build iOS Conf SG 2021: Speeding up the build process of a monolithic application
8. The Build iOS Conf SG 2021: Speeding up the build process of a monolithic application
9. The Build iOS Conf SG 2021: Speeding up the build process of a monolithic application
10. The Build iOS Conf SG 2021: Speeding up the build process of a monolithic application
11. The Build iOS Conf SG 2021: Speeding up the build process of a monolithic application
13. Media: https://www.macrumors.com/2011/10/05/steve-jobs-has-passed-away
14. ./steve focus Cart Media: https://www.macrumors.com/2011/10/05/steve-jobs-has-passed-away
15. ./steve focus Cart
16. OLD
17. ./steve focus Networking Networking OLD
18. ./steve focus Networking Cart ItemPage Payments SearchEngine Networking Lists … Address OLD
19. ./steve focus Networking Cart ItemPage Payments SearchEngine Networking Lists … Address OLD
20. Cart ItemPage Payments SearchEngine Core Lists … Address OLD
21. Cart ItemPage Payments SearchEngine Core Lists … Address Networking .shared OLD
22. Networking NEW
23. Networking Interface Networking NEW
24. Cart ItemPage Payments SearchEngine Lists … Address Networking Interface Networking ./steve focus Networking NEW
25. ./steve focus Networking Cart ItemPage Payments SearchEngine Lists … Address Networking Interface Networking NEW
26. Cart Interface ItemPage Interface Payments Interface SearchEngine Interface Lists Interface … Address Interface Networking Interface Networking Cart ItemPage Payments SearchEngine Lists … Address NEW
27. Cart Interface ItemPage Interface Payments Interface SearchEngine Interface Lists Interface … Address Interface Cart ItemPage Payments SearchEngine Lists … Address NEW
28. Cart Interface ItemPage Interface Payments Interface SearchEngine Interface Lists Interface … Address Interface Cart ItemPage Payments SearchEngine Lists … Address NEW
29. Media: https://giphy.com/gifs/nervous-indiana-jones-waiting-oKVs1VY0MKfvO
30. Media: https://giphy.com/gifs/nervous-indiana-jones-waiting-oKVs1VY0MKfvO
31. Media: https://giphy.com/gifs/cbs-indianajones-harrisonford-raidersofthelostark-TGogvP0s0QESHmyYi9
32. Media: https://giphy.com/gifs/cbs-indianajones-harrisonford-raidersofthelostark-TGogvP0s0QESHmyYi9
33. func injectOfferPageDependencies() { let container = OfferPage.DependencyContainer.default container.networking = Networking.Adapter.shared !// … } OLD !//Module: Core
34. func injectOfferPageDependencies() { let container = OfferPage.DependencyContainer.default container.networking = Networking.Adapter.shared !// … } OLD !//Module: Core
35. protocol Networking { func get(_ resource: Resource) func post(_ resource: Resource) } OLD !//Module: Networking
36. protocol Networking { func get(_ resource: Resource) func post(_ resource: Resource) } !//Module: NetworkingInterface NEW
37. !//Module: Networking NEW
38. import NetworkingInterface !//Module: Networking NEW
39. import NetworkingInterface class ModuleConfiguration: ModuleConfiguring { !//Module: Networking NEW
40. import NetworkingInterface class ModuleConfiguration: ModuleConfiguring { func registerImplementations(in registry: Registry) { !//Module: Networking NEW
41. import NetworkingInterface class ModuleConfiguration: ModuleConfiguring { func registerImplementations(in registry: Registry) { registry.register(type: Networking.self, service: NetworkingAdapter()) !//Module: Networking NEW
42. import NetworkingInterface class ModuleConfiguration: ModuleConfiguring { func registerImplementations(in registry: Registry) { registry.register(type: Networking.self, service: NetworkingAdapter()) } } !//Module: Networking NEW
43. import NetworkingInterface class ModuleConfiguration: ModuleConfiguring { func registerImplementations(in registry: Registry) { registry.register(type: Networking.self, service: NetworkingAdapter()) } } !//Module: Networking NEW
44. !//Module: OfferPage NEW
45. import NetworkingInterface !//Module: OfferPage NEW
46. import NetworkingInterface class ModuleConfiguration: ModuleConfiguring { !//Module: OfferPage NEW
47. import NetworkingInterface class ModuleConfiguration: ModuleConfiguring { func start(with resolver: Resolver) { !//Module: OfferPage NEW
48. import NetworkingInterface class ModuleConfiguration: ModuleConfiguring { func start(with resolver: Resolver) { guard let networking = resolver.resolve(type: Networking.self) !//Module: OfferPage NEW
49. import NetworkingInterface class ModuleConfiguration: ModuleConfiguring { func start(with resolver: Resolver) { guard let networking = resolver.resolve(type: Networking.self) } } !//Module: OfferPage NEW
50. import NetworkingInterface class ModuleConfiguration: ModuleConfiguring { func start(with resolver: Resolver) { guard let networking = resolver.resolve(type: Networking.self) } } !//Module: OfferPage NEW
51. var modules: [ModuleConfiguring.Type] { OfferPage.ModuleConfiguration.self, Networking.ModuleConfiguration.self, !// … } !//Module: Application NEW
52. let container: Registry & Resolver = !//… modules.forEach { $0.registerImplementations(in: container) } modules.forEach { $0.start(with: container) } !//Module: Application NEW
53. !//Module: DependencyInjection NEW
54. !//Module: DependencyInjection NEW class DependencyContainer: Registry, Resolver {
55. !//Module: DependencyInjection NEW class DependencyContainer: Registry, Resolver { func register<T>(type: T.Type, service: Any) {
56. !//Module: DependencyInjection NEW class DependencyContainer: Registry, Resolver { func register<T>(type: T.Type, service: Any) { dependencies[DependencyKey(type)] = service } }
57. !//Module: DependencyInjection NEW class DependencyContainer: Registry, Resolver { }
58. !//Module: DependencyInjection NEW class DependencyContainer: Registry, Resolver { } func resolve<T>(type: T.Type) !-> T? { return dependencies[DependencyKey(type)] as? T }
59. NEW !//Zalety: Nowe Dependency Injection
60. • lżejszy workspace (mniej modułów) NEW !//Zalety: Nowe Dependency Injection
61. • lżejszy workspace (mniej modułów) • zależności międzymodułowe tylko na moduły z interfejsami (protokoły) NEW !//Zalety: Nowe Dependency Injection
62. • lżejszy workspace (mniej modułów) • zależności międzymodułowe tylko na moduły z interfejsami (protokoły) • wstrzykiwanie implementacji interfejsów przez poszczególne moduły NEW !//Zalety: Nowe Dependency Injection
63. • lżejszy workspace (mniej modułów) • zależności międzymodułowe tylko na moduły z interfejsami (protokoły) • wstrzykiwanie implementacji interfejsów przez poszczególne moduły • ekstrakcja potrzebnych typów przez poszczególne moduły NEW !//Zalety: Nowe Dependency Injection
64. allegro.tech Speeding up iOS builds with Bazel Speeding up warm builds in Xcode Maciej Piotrowski twitter.com/macpiotrowski89