iOS アプリエラー監視の設計とその効果

Transcript

1. J04
   ΞϓϦΤϥʔ؂ࢹͷ
 ઃܭͱͦͷޮՌ
2. "CPVU
   NF
3. ,VOJXBL
   גࣜձࣾ
   %JWFSTF
   ͷ
   J04
   ςοΫϦʔυɻ
 ͱ͋ΔΞϓϦͷϦχϡʔΞϧϓϩδΣΫτʹ
 ్த͔ΒՃΘͬͨ΋ͷͷɺςετࠔ೉ͳઃܭΛ
 ໨ͷ౰ͨΓʹͨͨ͠ΊɺཪϦχϡʔΞϧΛ։࢝ɻ
 ࠷ऴతʹςετΛಋೖ͠ɺ։ൃ଎౓Λഒʹͨ͠ɻ झຯ͸
   5%%ɻ
4. Τϥʔ؂ࢹͱ͸
5. w ΞϓϦͰൃੜͨ͠ΤϥʔΛαʔόʹૹΔͳͲͯ͠
 Τϥʔͷൃੜ਺ͳͲΛ؂ࢹ͢Δٕज़
   w ྫ͑͹ɺΞϓϦ͕Ϋϥογϡͨ͠ΒϨϙʔτΛ
 ඈ͹͢ΫϥογϡϨϙʔτ͸͜ͷҰछ
   w ΫϥογϡϨϙʔτղੳαʔϏεͰ͸
 $SBTIMZUJDT
   ͕༗໊
6. Τϥʔͷൃੜ਺΍
   66 Τϥʔͷ*% ΤϥʔͷΧςΰϦ Τϥʔൃੜ਺ͷ࣌ؒతਪҠ Τϥʔൃੜ࣌ͷσόΠε Τϥʔൃੜ࣌ͷ04
7. w ࣮͸ɺଟ͘ͷΫϥογϡϨϙʔταʔϏε͸
 ΫϥογϡҎ֎ͷΤϥʔ΋؂ࢹͰ͖Δ
   w ྫ͑͹ɺ8FC
   "1*
   ݺͼग़࣌͠ͷΤϥʔ΍ɺ
 ಺෦ঢ়ଶͷෆ੔߹ͳͲͷΤϥʔ΋؂ࢹͰ͖Δ ૹ৴ͷ࢓ํ͸ޙͰ঺հ͠·͢
8. Τϥʔ؂ࢹͷಛੑ
9. w Τϥʔ؂ࢹͷಛੑ͸ҎԼͷͭɿ
   w ඇৗʹ޿ൣͳόάΛݕ஌Ͱ͖Δ
   w Τϯόά͔Βൃݟ·Ͱͷ͕࣌ؒ௕͍
10. ਤղ
11. όάΛݟ͚ͭΔͨΊͷखஈ ߏจϋΠϥΠτ Ϧϯτ ੩తܕݕࠪ ୯ମɾ݁߹ςετ 6*
    ςετ ςελʔʹΑΔಈ࡞֬ೝ Τϥʔ؂ࢹ Ϣʔβʔ͔Βͷ͓໰͍߹Θͤ
12. όά9Λݟ͚ͭΒΕΔ৔ॴ όά9 ߏจϋΠϥΠτ Ϧϯτ ੩తܕݕࠪ ୯ମɾ݁߹ςετ 6*
    ςετ ςελʔʹΑΔಈ࡞֬ೝ Τϥʔ؂ࢹ Ϣʔβʔ͔Βͷ͓໰͍߹Θͤ
13. όά9 ߏจϋΠϥΠτ Ϧϯτ ੩తܕݕࠪ ୯ମɾ݁߹ςετ 6*
    ςετ ςελʔʹΑΔಈ࡞֬ೝ Τϥʔ؂ࢹ Ϣʔβʔ͔Βͷ͓໰͍߹Θͤ ্ͷํͰࢭ·Δͱ
    ݪҼڀ໌ͷ͕࣌ؒ୹͍ όά: ಛघͳΤϥʔ͸ԼͷํͰ
 ͔͠ݟ͚ͭΒΕͳ͍
14. ߏจϋΠϥΠτ Ϧϯτ ੩తܕݕࠪ ୯ମɾ݁߹ςετ 6*
    ςετ ςελʔʹΑΔಈ࡞֬ೝ Τϥʔ؂ࢹ Ϣʔβʔ͔Βͷ͓໰͍߹Θͤ Τϥʔ؂ࢹ͸ಛघͳ
 ΤϥʔΛݟ͚ͭΒΕΔ
 ΄΅࠷ޙͷࡆ όά: ͔͠͠ɺ্ͷ૚ΑΓ΋
 Τϯόά͔Βൃݟ·Ͱͷ
 ͕࣌ؒͱͯ΋௕͍
15. Τϥʔ؂ࢹͰݟ͚ͭΔ΂͖
 Τϥʔͱ͸
16. ߏจϋΠϥΠτ Ϧϯτ ੩తܕݕࠪ ୯ମɾ݁߹ςετ 6*
    ςετ ςελʔʹΑΔಈ࡞֬ೝ Τϥʔ؂ࢹ Ϣʔβʔ͔Βͷ͓໰͍߹Θͤ ༧໿ޠλΠϙ ม਺໊λΠϙ ϓϩύςΟ໊
 λΠϙ ෼ذߟྀ࿙Ε ίϯϙʔωϯτ
 ࢓༷ͷෆ੔߹ ࢓༷΁ͷޡղ ಛघͳ؀ڥͰ͔͠
 ࠶ݱ͠ͳ͍Τϥʔ ҋ ཧ૝ͷόάݕ஌ͷ࢟
17. ߏจϋΠϥΠτ Ϧϯτ ੩తܕݕࠪ ୯ମɾ݁߹ςετ 6*
    ςετ ςελʔʹΑΔಈ࡞֬ೝ Τϥʔ؂ࢹ Ϣʔβʔ͔Βͷ͓໰͍߹Θͤ ༧໿ޠλΠϙ ม਺໊λΠϙ ϓϩύςΟ໊
 λΠϙ ෼ذߟྀ࿙Ε ίϯϙʔωϯτ
 ࢓༷ͷෆ੔߹ ࢓༷΁ͷޡղ ಛघͳ؀ڥͰ͔͠
 ࠶ݱ͠ͳ͍Τϥʔ ҋ όά͕Լͷ૚·Ͱ
 ಥ͖ൈ͚ͯ͠·͏ͷͰ
 ݪҼڀ໌ʹ͕͔͔࣌ؒΔ μϝͳόάݕ஌ͷ࢟
18. ߏจϋΠϥΠτ Ϧϯτ ੩తܕݕࠪ ୯ମɾ݁߹ςετ 6*
    ςετ ςελʔʹΑΔಈ࡞֬ೝ Τϥʔ؂ࢹ Ϣʔβʔ͔Βͷ͓໰͍߹Θͤ ༧໿ޠλΠϙ ม਺໊λΠϙ ϓϩύςΟ໊
 λΠϙ ෼ذߟྀ࿙Ε ίϯϙʔωϯτ
 ࢓༷ͷෆ੔߹ ࢓༷΁ͷޡղ ಛघͳ؀ڥͰ͔͠
 ࠶ݱ͠ͳ͍Τϥʔ ҋ ཧ૝ͷόάݕ஌ͷ࢟
19. ߏจϋΠϥΠτ Ϧϯτ ੩తܕݕࠪ ୯ମɾ݁߹ςετ 6*
    ςετ ςελʔʹΑΔಈ࡞֬ೝ Τϥʔ؂ࢹ Ϣʔβʔ͔Βͷ͓໰͍߹Θͤ ༧໿ޠλΠϙ ม਺໊λΠϙ ϓϩύςΟ໊
 λΠϙ ෼ذߟྀ࿙Ε ίϯϙʔωϯτ
 ࢓༷ͷෆ੔߹ ࢓༷΁ͷޡղ ಛघͳ؀ڥͰ͔͠
 ࠶ݱ͠ͳ͍Τϥʔ ҋ Τϥʔ؂ࢹͰݕ஌͢΂͖
 Τϥʔ͸͜ͷ͋ͨΓ
20. ͜͜·Ͱͷ·ͱΊ w Τϥʔ؂ࢹ͸ಛघͳόάΛ
 ݕ஌͢ΔͨΊͷखஈ
    w ͳ͓ɺͦͷલͷखஈͰόάΛ
 ݟ͚ͭΒΕΔͳΒͦͷํ͕
 ݪҼڀ໌Λ଎͘Ͱ͖Δ
21. Τϥʔ؂ࢹͷ࣮૷ํ๏
22.  Τϥʔ؂ࢹαʔϏεͷ
    "1*
    Λ೺Ѳ͢Δ
     ΤϥʔϨϙʔλʔΛΧελϚΠζ͢Δ
     ΤϥʔϨϙʔλʔΛ૊ΈࠐΉ
23. Τϥʔ؂ࢹαʔϏεͷ
 "1*
    Λ೺Ѳ͢Δ 
24. Crashlytics.sharedInstance().recordError(error) $SBTIMZUJDT
    ʹΤϥʔΛૹ৴͢Δίʔυ &SSPS
    Ͱ͸ͳ͘
    /4&SSPS
    ͳͷͰ஫ҙ
25. ΤϥʔϨϙʔλʔΛ
 ΧελϚΠζ͢Δ 
26. ౎౓
    /4&SSPS
    ʹม׵͢Δͷ͸
 ໘౗ͳͷͰɺ4XJGU
    ͷ
    &SSPS
    Λ
 /4&SSPS
    ΁͍͍ײ͡ʹ
 ม׵ͯ͘͠ΕΔϥούʔΛॻ͘ $SBTIMZUJDT
    ͷ৔߹
27. class CrashlyticsErrorReporter { private let crashlytics = Crashlytics.sharedInstance() func report(error: Error, from reporter: Any) { #if DEBUG let prefix = "DEBUG " #else let prefix = "" #endif let detailedError = NSError( domain: "\(prefix)\(type(of: reporter))", code: CrashlyticsErrorTracker.getNSErrorCode(bySwiftError: error), userInfo: [ NSLocalizedDescriptionKey: "\(error)", ] ) self.crashlytics.recordError(detailedError) } private static func getNSErrorCode(bySwiftError error: Error) -> Int { let bridgedError = error as NSError return bridgedError.code } } %&#6(
    ϏϧυΛ۠ผͰ͖ΔΑ͏ʹ͓ͯ͘͠ͱ
 ຊ൪؀ڥͱ։ൃ؀ڥΛ۠ผ͠΍͘͢ͳΔ ΤϥʔϨϙʔλʔʹͲͷΑ͏ʹ
 ूܭ͞ΕΔ͔Λҙࣝ͢Δ
    ྫ͑͹ɺ$SBTIMZUJDT
    ͸
    /4&SSPS
    ͷ
 EPNBJO
    ͱ
    DPEF
    ͷ૊ͰΤϥʔΛ
 άϧʔϐϯά͢ΔͷͰɺͦΕͧΕ
 Τϥʔ*%ͱൃੜݩΛࢦఆ͢Δͱ
 ៉ྷʹΤϥʔ͕·ͱ·Δ Τϥʔͷશจ͸άϧʔϐϯάʹ࢖Θͳ͍Α͏ʹ͢Δ
 ʢϢʔβʔ*%ͱ͔͕ೖΔͱݸผͷΤϥʔʹͳͬͯ
 ૯਺Λ೺ѲͰ͖ͳ͘ͳΔͷͰʣ $SBTIMZUJDT
    ༻ͷΤϥʔϨϙʔλʔΛ࡞੒
    SFQPSU
    ؔ਺ΛݺͿͱΤϥʔϨϙʔτ͕
 ૹ৴͞ΕΔΑ͏ʹ࣮૷͍ͯ͠Δ ΤϥʔͱҰॹʹൃੜݩ͕
 Θ͔ΔΑ͏ʹ͓ͯ͘͠ͱ
 ݪҼͷݟ౰͕͖ͭ΍͘͢ͳΔ
28. ΤϥʔϨϙʔλʔΛ
 ૊ΈࠐΉ 
29. Α͘ΈΔ૊ΈࠐΈํ๏
30. class UserApiRepository: UserRepositoryProtocol { private let api: GitHubApiClientProtocol func get(by id: GitHubUser.Id) -> Promise<GitHubUser> { return self.api .fetch( endpoint: GitHubApiEndpoint(path: "/user/" + id.text), headers: [:], parameters: [] ) .then { data -> GitHubUser in let response: GitHubUserResponse = try unbox(data: data) return response.user } .catch { error in ErrorReporter.shared.report( error: error, reporter: self ) } } } Τϥʔ͕ฦ͖ͬͯͨΒ
 ΤϥʔϨϙʔτΛૹ৴
 ʢͭ·Γϋʔυίʔυʣ "1*
    ݺͼग़͠ͷίʔυ
31. w ͔͠͠ϋʔυίʔυʹ͸໰୊͕ଟ͍ɿ
    w "1*
    ͷݺͼग़͠ʹؔ܎ͷͳ͍ίʔυ͕ೖΔͨΊ
 ୯Ұ੹຿ݪଇʹҧ൓͢Δ
    w ୯ମςετͰΤϥʔϨϙʔτ͕ૹΒΕͯ͠·͏
    w ςετ͚࣌ͩ༗ޮͳϑϥάΛ௥Ճͯ͠
 ΤϥʔϨϙʔτΛૹ৴͠ͳ͍Α͏ʹ
 Ͱ͖ͳ͘͸ͳ͍͕΍Γͨ͘ͳ͍
32. ͦ͜Ͱ
    0CTFSWFS
    ύλʔϯ
33. w 0CTFSWFS
    ύλʔϯͰ͸ɺ؂ࢹऀ͕؂ࢹର৅ͷ
 ঢ়ଶมԽΛ࡯஌ͯ͠ಈ࡞͢Δ
    w ΤϥʔϨϙʔτʹԠ༻͢Δͱɿ
    w ؂ࢹऀ͸ΤϥʔϨϙʔλʔ
    w ؂ࢹର৅͸Τϥʔ͕ൃੜ͠͏ΔΦϒδΣΫτ
    w 0CTFSWFS
    ύλʔϯΛ࢖͑͹ϋʔυίʔυͷ
 ໰୊఺ΛղফͰ͖Δ
34. Τϥʔͷൃੜݯ Τϥʔ͕ൃੜ͠·ͨ͠ ΤϥʔϨϙʔλʔ ؂ࢹ
35. Τϥʔͷൃੜݯ ΤϥʔϨϙʔλʔ ؂ࢹ Τϥʔ͕ى͖ͨͷͰ
 ΤϥʔϨϙʔτΛ
 ૹ৴͠·͢
36. Τϥʔͷൃੜݯ ΤϥʔϨϙʔλʔ ΤϥʔϨϙʔτૹ৴
 ͷ੹຿ Τϥʔ͕ى͜Γ͏Δ
 ॲཧͷ੹຿
37. Τϥʔͷൃੜݯ ΤϥʔϨϙʔλʔ ςετͷͱ͖͸
 ΤϥʔϨϙʔλʔ
 ΛऔΓ෇͚ͳ͍
38. w ͨͩ͠ɺ0CTFSWFS
    ύλʔϯΛ࢖͑Δ৔ॴ͸
 ݶΒΕ͍ͯΔ
    w ؂ࢹର৅͕؂ࢹՄೳͳΠϯλʔϑΣʔεΛ
 උ͍͑ͯͳ͍ͱ͍͚ͳ͍ͨΊ
    w .7
    ΞʔΩςΫνϟͳΒɺ.PEFM
    ͸؂ࢹՄೳͳ
 ΠϯλʔϑΣʔεΛ͍࣋ͬͯΔ͸ͣͳͷͰɺ.PEFM
    ʹ
 ΤϥʔϨϙʔλʔΛ૊ΈࠐΈ΍͍͢͸ͣ
    w 'MVY
    ΞʔΩςΫνϟͷ৔߹͸
    4UPSF
    ͕؂ࢹՄೳͳ
 ΠϯλʔϑΣʔεΛ͍࣋ͬͯΔ͸ͣ
39. .PEFM 7JFX &SSPS3FQPSUFS ؂ࢹ ؂ࢹ Τϥʔ͕ൃੜ͠·ͨ͠
40. .PEFM 7JFX &SSPS3FQPSUFS ؂ࢹ ؂ࢹ ΤϥʔΛදࣔ͠·͢ ΤϥʔϨϙʔτΛ
 ૹ৴͠·͢
41. func fetch() { switch self.currentState { case .fetching: return case .fetched: self.stateMachine.transit(to: .fetching) self.repository.get(by: self.id) .then { user in self.stateMachine.transit(to: .fetched( result: .success(user) )) } .catch { error in self.stateMachine.transit(to: .fetched( result: .failure(.unspecified(debugInfo: "\(error) )) } } } ͜ͷ
    .PEFM
    ͸
    "1*
    ݺͼग़͕͠Τϥʔʹ
 ͳͬͨΒΤϥʔঢ়ଶ΁มԽ͢Δ
    ͦͷͨΊɺΤϥʔϨϙʔλʔ͔Β؂ࢹ͠΍͍͢ .PEFM
    ૚ͷ"1*
    ݺͼग़͠ͷίʔυ ͜ͷΑ͏ͳ.PEFM
    ૚ͷઃܭͷৄࡉ͸
    IUUQTHPPHM1G'+-
    Λࢀর͍ͯͩ͘͠͞
42. class UserModelErrorReporter { private let model: UserModelProtocol private let errorReporter: ErrorReporterProtocol private let disposeBag = RxSwift.DisposeBag() init( observing model: UserModelProtocol, reportingBy errorReporter: ErrorReporterProtocol ) { self.model = model self.errorReporter = errorReporter self.model.didChange .subscribe(onNext: { [weak self] (state: UserModelState) in guard let `self` = self else { return } switch state { case let .fetched(result: .failure(error)): self.errorReporter.report(error: error, reporter: self) default: return } }) .disposed(by: disposeBag) } } .PEFM
    ͕Τϥʔঢ়ଶʹͳͬͨΒ
 ΤϥʔϨϙʔτΛૹ৴ .PEFM
    ͷঢ়ଶભҠΛ؂ࢹ .PEFM
    Λ؂ࢹ͢ΔΤϥʔϨϙʔλʔΛ࡞੒
43. ͜͜·Ͱͷ·ͱΊ w Τϥʔ؂ࢹͷ࣮૷ํ๏ʹ͸
 0CTFSWFS
    ύλʔϯ͕ద͍ͯ͠Δ
    w .PEFM
    ΍
    4UPSF
    Λ؂ࢹ͢ΔͱΑ͍
44. Τϥʔ؂ࢹͷίπ
45. Τϥʔ؂ࢹΛ։࢝͢Δͱ
 ࠔౕ͕ͬͨͪΐͪ͘ΐ͘ग़ͯ͘Δ
46. Fatal Exception: SomethingError *** nil ৘ใྔ͕΄ͱΜͲͳ͍ʂ
47. Τϥʔʹ͸ͳΔ΂͘
 ΫϦςΟΧϧͳ৘ใΛ٧ΊΑ͏
48. func example(input: String) -> String? { guard validate1(input) else { return nil } guard validate2(input) else { return nil } guard validate3(input) else { return nil } return "OK! Hello \(input)" } ݪҼڀ໌Λ஗͘͢Δѱ͍ྫ ࣦഊͨ͠ݪҼ͕۠ผͰ͖ͳ͍
49. enum ExampleError: Error { case validate1(debugInfo: String) case validate2(debugInfo: String) case validate3(debugInfo: String) } ͦ͏͍͏࣌͸
    FOVN
    ͰΤϥʔΛ۠ผͰ͖ΔΑ͏ʹ͢Δ
50. func example(input: String) -> Result<String> { guard validate1(input) else { return .failure(.validate1(debugInfo: input)) } guard validate2(input) else { return .failure(.validate2(debugInfo: input)) } guard validate3(input) else { return .failure(.validate3(debugInfo: input)) } return .success("OK! Hello \(input)") } ΤϥʔΛ۠ผ͠΍͍͢Α͍ྫ ࣦഊͨ͠ݪҼ͕۠ผͰ͖Δ ࣦഊͨ͠ࡍͷೖྗ΋ೖखͰ͖Δ
51. Τϥʔ؂ࢹͷ݁Ռ
52. w ϢʔβʔͷखݩͰൃੜ͍ͯ͠Δόάͷछྨ΍
 ن໛Λ೺ѲͰ͖ΔΑ͏ʹͳͬͨ
    w छྨ΍ن໛͕೺ѲͰ͖ΔΑ͏ʹͳΔͱɺόάमਖ਼ͷ
 τϦΞʔδΛ΍Γ΍͘͢ͳΔ
    w ՝ۚܥ͸࠷༏ઌͱ͔ɺΤϥʔ਺ͷଟ͍΋ͷ
 ͔ΒରॲͳͲ
53. w ϢʔβʔͷखݩͰ͸༧૝֎ͷΤϥʔ͕ى͍ͬͯͨ͜
    w ςελʔʹΑΔಈ࡞֬ೝͱ͸؀ڥ͕
 ҟͳ͍ͬͯͨͨΊɺൃݟͰ͖ͳ͔ͬͨΑ͏ͩ
    w ໘ന͍͜ͱʹɺ"QQMF
    ͷϨϏϡʔΞ͕ૺ۰ͨ͠
 όάͷݪҼڀ໌ʹ΋໾ཱͬͨ
    w 4BOECPY
    ͷϨγʔτ͡Όͳ͍ͱ࠶ݱ͠ͳ͍
 όάͩͬͨ
54. w خ͍͠෭࡞༻ͱͯ͠ɺςελʔͷૺ۰ͨ͠όάͷ
 ৄࡉ͕ೖखͰ͖ΔΑ͏ʹͳͬͨ
    w ςελʔͷಈ࡞֬ೝதʹΤϥʔϨϙʔτ͕
 ඈΜͰ͘ΔͨΊʢ%&#6(
    ϏϧυͳͷͰ͙͢Θ͔Δʣ
    w σόοά͕͍͢͝ḿΓ·͢
55. ·ͱΊ w Τϥʔ؂ࢹʹΑΓɺςελʔʹΑΔಈ࡞֬ೝͰ΋
 ݟ͚ͭΒΕͳ͔ͬͨΤϥʔΛൃݟͰ͖ΔΑ͏ʹ
 ͳͬͨ
    w ઃܭͷίπ͸ҎԼͷͭɿ
    w 0CTFSWFS
    ύλʔϯΛ࢖͏
    w ͳΔ΂͘Τϥʔ৘ใΛΘ͔Γ΍͘͢͢Δ
56. એ఻ w %JWFSTF
    Ͱ͸৽نࣄۀͷ
    J04
    ։ൃνʔϜͷ
 νʔϜϦʔμʔΛืू͍ͯ͠·͢ʂ
    w ੒௕தͷαʔϏεΛࣗ෼ͷྗͰಋ͍ͯΈ͍ͨͱ
 ࢥ͏ํʹɺͥͻ͖ͯ΄͍͠ͱࢥ͍ͬͯ·͢ʂ
    w ͝ڵຯ͕͋Γ·ͨ͠ΒɺҰॹʹϥϯνʹ
 ߦ͖·ͤΜ͔ʁ