Firebase Authorization

Transcript

1. QPUBUPUJQT
    Firebase Authorization Ͱେมͩͬͨ͜ͱ

2. @nakajijapan Software Engineer CAMPFIRE / iOSDC / NKJ Internet iOS

   / Android / Web / macOS

3. NKJMultiMovieCaptureView NKJMovieComposer NKJPagerViewController PhotoSlider Teiten GitHub Sengiri Shari Ajimi Kazaguruma

   iOSDC 2017 Izumo

4. Izumo macOS iPhone / iPad Markdown Note Tool

5. None

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7. Firebase Authentication

8. None

9. 'JSFCBTF
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10. Firebase Authentication • ϩάΠϯΛ׬ྃ͢Δ • tokenΛϔομʹՃ͑ͯϦΫΤετ • αʔόʔଆͰݕূ

11. ⚠

12. ⚠ • Tokenͷ༗ޮظݶ͸̍࣌ؒ

13. ⚠ • Tokenͷ༗ޮظݶ͸̍࣌ؒ • getIDTokenForcingRefresh()ͷར༻ • ແ͚Ε͹ɺ৽͍͠tokenΛൃߦ

14. Retry

15. None

16. ⚠ • ࣌ʑϦΫΤετʹࣦഊ͢Δ • ͦͷޙɺ௨৴͸࠶։͞ΕΔ

17. RxSwift

18. func retryWithAuthIfNeeded() -> Observable<E> { let firebaseAuthProvider = FirebaseAuthProvier() return

    self.retryWhen({ (errors: Observable<Swift.Error>) in errors.enumerated().flatMap { retryCount, error -> Observable<Void> in guard case let Moya.MoyaError.statusCode(response) = error else { return Observable.error(error) } if response.statusCode != 401 { return Observable.error(error) } if response.statusCode == 401 && retryCount >= 2 { return Observable.error(error) } return firebaseAuthProvider.auth().do(onError: { error in throw error }).map { _ in () } } }) }

19. func auth() -> Observable<Bool> { return Observable<Bool>.create({ observe -> Disposable

    in self.firebaseAuth { success in observe.on(.next(success)) observe.on(.completed) } return Disposables.create() }) }
20. None
21. None

22. ඇಉظ

23. DispatchSemaphore

24. func auth() -> Observable<String> { let semaphore = DispatchSemaphore(value: 1)

    var authError: Error? return Observable<String>.create({ observer in Auth.auth().addStateDidChangeListener({ _, user in guard let user = user else { authError = FirebaseAuthError.unknownUser semaphore.signal() return } user.getIDTokenForcingRefresh(true, completion: { token, error in if error != nil { authError = FirebaseAuthError.noAuthToken semaphore.signal() return } UserCredentials.shared.accessToken = token semaphore.signal() }) }) semaphore.wait() if authError != nil { observer.onError(authError!) } observer.onNext(UserCredentials.shared.accessToken ?? "") observer.onCompleted() return Disposables.create() }) }
25. None

26. DispatchSemaphore

27. func auth() -> Observable<Bool> { return Observable<Bool>.create({ observe -> Disposable

    in self.firebaseAuth { success in observe.on(.next(success)) observe.on(.completed) } return Disposables.create() }) }

28. func auth() -> Observable<Bool> { return Observable<Bool>.create({ observe -> Disposable

    in self.firebaseAuth { success in observe.on(.next(success)) observe.on(.completed) } return Disposables.create() }) }

29. func auth() -> Observable<Bool> { return Observable<Bool>.create({ observe -> Disposable

    in self.firebaseAuth { success in observe.on(.next(success)) observe.on(.completed) } return Disposables.create() }) } ద੾ͳΤϥʔॲཧ͕ߦΘΕ͍ͯͳ͔ͬͨ ੒ޭͯ͠΋ࣦഊͯ͠΋OFYUͯ͠DPNQMFUFE

30. func auth() -> Observable<String> { var authError: Error? return Observable<String>.create({

    observer in Auth.auth().addStateDidChangeListener({ _, user in guard let user = user else { observer.onError(FirebaseAuthError.unknownUser!) return } user.getIDTokenForcingRefresh(true, completion: { token, error in if error != nil { observer.onError(FirebaseAuthError.noAuthToken!) return } observer.onNext(token) observer.onCompleted() }) }) return Disposables.create() }) }
31. None

32. Wrap Up

33. Wrap Up • Token͕੾Εͨͱ͖ͷରॲΛߟྀ͢Δ • retryWhenͰTokenΛߋ৽ͯ͠ϩάΠϯঢ় ଶΛҡ࣋͢Δ • RxSwiftؤுΔ

34. Thanks.