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͋ͳͨͲ͏ॻ͖
ͳͥͦ͏ॻ͘ͷ͔ʁ
USZ4XJGU1SF5BMLT
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ͷࣗࣾαʔϏε։ൃձࣾͷ
J04ΤϯδχΞЋ
TIJ[!TU[O
TIJ[ ͣ͠
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։ൃܦݧݴޠ
4XJGU,PUMJO+BWBTDSJQU1)1$+BWB
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Ͳ͏ͬͯ
ίʔυͷॻ͖ํΛ
ܾΊ͍ͯ·͔͢ʁ
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໌֬ͳཧ༝
ීஈͷ׳श
ܾఆ
ࢼߦࡨޡ
ʜ
அ
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ʁ
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ϩάΛૹΔ
YYYY
QSPUPDPM
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struct AnalyticsEvent {
var name: String
var metadata: [String: Any] = [:]
init(name: String, metadata: [String: Any] = [:]) {
self.name = name
self.metadata = metadata
}
}
class AnalyticsManager {
private let engine: AnalyticsEngine
init(engine: AnalyticsEngine) {
self.engine = engine
}
func log(_ event: AnalyticsEvent) {
engine.send(name: event.name, metadata: event.metadata)
}
}
protocol AnalyticsEngine: class {
func send(name: String, metadata: [String: Any])
}
struct Book {
let name: String
}
final class Library {
private var library: [Book] = []
func add(_ book: Book) -> Book {
library.append(book)
return book
}
}
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final class BookDetailViewController: UIViewController {
func addBook(book: Book) {
library.add(book)
let event = AnalyticsEvent(name: "bookOdded")
analytics.log(event)
}
}
wλΠϓϛεΛ͢ΔՄೳੑ͕͋Δ
wमਖ਼͕ෳՕॴʹೖΔ
final class BookListViewController: UIViewController {
func addBook(book: Book) {
library.add(book)
let event = AnalyticsEvent(name: "bookAdded")
analytics.log(event)
}
}
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FOVN
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enum AnalyticsEvent {
case bookAdded(Book)
var name: String {
switch self {
case .bookAdded:
return "bookAdded"
}
}
var metadata: [String: Any] {
switch self {
case .bookAdded(let book):
return ["book": book.name]
}
}
}
final class BookListViewController: UIViewController {
func addBook(book: Book) {
library.add(book)
analytics.log(.bookAdded(book))
}
}
final class BookDetailViewController: UIViewController {
func addBook(book: Book) {
library.add(book)
analytics.log(.bookAdded(book))
}
}
ɾλΠϓϛε͕ͳ͘ͳΔ
ɾίϯύΠϧ࣌ʹνΣοΫ͕Ͱ͖Δ
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enum AnalyticsEvent {
case loginScreenViewed
case loginAttempted
case loginFailed(reason: LoginFailureReason)
case loginSucceeded
case bookListViewed
case bookAdded(Book)
case bookSelected(Book)
case bookDeleted(Book)
var name: String {
switch self {
case .loginScreenViewed, .loginAttempted,
.loginSucceeded, .bookListViewed:
return String(describing: self)
case .loginFailed:
return "loginFailed"
case .bookAdded:
return "bookAdded"
case .bookSelected:
return "bookSelected"
case .bookDeleted:
return "bookDeleted"
}
}
var metadata: [String: Any] {
switch self {
case .loginScreenViewed, .loginAttempted,
.loginSucceeded, .bookListViewed:
return [:]
case .loginFailed(let reason):
return ["reason" : String(describing: reason)]
case .bookAdded(let book):
return ["book" : book.name]
case .bookSelected(let index):
return ["book" : book.name]
case .bookDeleted(let book):
return ["book" : book.name]
}
}
}
w4XJUDIจ͕େྔʹͳΔ
wએݴͱมͷఆ͕͔ٛΕΔ
ͲΜͲΜ૿͍͑ͯ͘ɻɻɻ
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Ϟδϡʔϧͷׂ͕Ͱ͖ͳ͍
Πϕϯτ͕૿͑Δ
enumʹcaseΛՃ
enumͷextensionͷमਖ਼
YYYY
QSPUPDPM
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struct
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struct AnalyticsEvent {
let name: String
let metadata: [String : Any]
private init(name: String, metadata: [String: Any] = [:]) {
self.name = name
self.metadata = metadata
}
}
• ҰՕॴͰએݴͰ͖Δ
• ݺͼग़͠ํenumͷ࣌ͱมΘΒͳ͍
final class BookListViewController: UIViewController {
func addBook(book: Book) {
library.add(book)
analytics.log(.bookList_BookAdded(book))
}
}
extension AnalyticsEvent {
static func bookList_BookAdded(_ book: Book) -> AnalyticsEvent {
return AnalyticsEvent(
name: "bookList_BookAdded",
metadata: ["book" : book.name]
)
}
}
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Ϟδϡʔϧͷׂ͕Ͱ͖Δ
extensionʹ͢Δ͜ͱͰଞʹӨڹΛ༩͑ͳ͍
YYYY
QSPUPDPM
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w໊લͷিಥ
final class BookListViewController: UIViewController {
func addBook(book: Book) {
library.add(book)
analytics.log(.bookList_BookAdded(book))
}
}
extension AnalyticsEvent {
static func bookList_BookAdded(_ book: Book) -> AnalyticsEvent {
return AnalyticsEvent(
name: "bookList_BookAdded",
metadata: ["book" : book.name]
)
}
static func bookDetail_BookAdded(_ book: Book) -> AnalyticsEvent {
return AnalyticsEvent(
name: “bookDetail_BookAdded",
metadata: ["book" : book.name]
)
}
}
final class BookDetailViewController: UIViewController {
func addBook(book: Book) {
library.add(book)
analytics.log(.bookDetail_BookAdded(book))
}
}
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ݺͼग़͠ଆͰॳظԽͷํ๏Λ
TUSVDUͷ߹ʹ߹ΘͤΔඞཁ͕͋Δ
extension AnalyticsEvent {
static func bookDetail_BookRead(_ book: Book, count: Int) -> AnalyticsEvent {
return AnalyticsEvent(
name: “bookDetail_BookAdded",
metadata: ["book": book.name, “read_count”: count]
)
}
}
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init(book: Book, count: Int) {
self.init(
name: "bookRead",
metadata: ["book" : book.name, "read_count":
count]
)
}
init(a: String) {
self.init(name: a)
}
init(b: String) {
self.init(name: b)
}
init(c: String) {
self.init(name: c)
}
init(d: String) {
self.init(name: d)
}
…
DVTUPNJOJUΛఆٛͰ͖Δ͕ʜ
ͲΜͲΜ૿͍͑ͯ͘ɻɻɻ
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protocol
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• ৽͍͠Πϕϯτͷ࡞͕༰қ(caseextensionͷՃඞཁͳ͠)
• ಠࣗͷΠχγϟϥΠβΛఆٛͰ͖ݺͼग़͠ଆͷෛ୲Λ૿͞ͳ͍
• enumstructclass͑Δ
• Xcodeͷࣗಈิͳ͠
protocol AnalyticsEvent {
var name: String { get }
var metadata: [String: Any] { get }
}
struct BookReadErrorAnalyticsEvent: AnalyticsEvent {
var name: String {
return "BookReadError"
}
var metadata: [String: Any] {
return ["code": reason.code,
"description": reason.description]
struct Reason {
let code: Int
let description: String
}
private let reason: Reason
init(reason: Reason) {
self.reason = reason
}
}
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final class ProductionAnalyticsEngine: AnalyticsEngine {
func log(_ event: AnalyticsEvent) {
let name = "Production-\(event.name)"
AnalyticsAPI.send(name: name, metadata: event.metadata)
}
}
final class DevAnalyticsEngine: AnalyticsEngine {
func log(_ event: AnalyticsEvent) {
let name = "Dev-\(event.name)"
AnalyticsAPI.send(name: name, metadata: event.metadata)
}
}
final class StagingAnalyticsEngine: AnalyticsEngine {
func log(_ event: AnalyticsEvent) {
let name = "Staging-\(event.name)"
AnalyticsAPI.send(name: name, metadata: event.metadata)
}
}
final class TestAnalyticsEngine: AnalyticsEngine {
func log(_ event: AnalyticsEvent) {
let name = "Test-\(event.name)"
AnalyticsAPI.send(name: name, metadata: event.metadata)
}
}
ಉ͡Α͏ͳܕͷఆ͕ٛ૿͍͑ͯ͘
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• ܕΛఆٛ͢Δඞཁ͕ͳ͘ͳΔ
• ΧελϚΠζ͕ࣗ༝ʹͳΔ
struct AnalyticsEngine {
let log: (Event) -> Void
init(log: @escaping (Event) -> Void) {
self.log = log
}
}
final class BookListViewController: UIViewController {
private let engine: AnalyticsEngine
}
let prefix = "Production-"
let bookListEngine = AnalyticsEngine { event in
let name = "\(prefix)\(event.name)"
AnalyticsAPI.send(name: name, metadata: event.metadata)
}
let collection = Library()
let vc = BookListViewController(library: collection, engine: bookListEngine)
let bookDetailEngine = AnalyticsEngine { event in
let name = "\(prefix)\(event.name)"
AnalyticsAPI.send(name: name, metadata: event.metadata)
}
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struct MultipleAnalyticsEngine {
let log: ([Event]) -> Void
init(log: @escaping ([Event]) -> Void) {
self.log = log
}
}
let multiEngine = MultipleAnalyticsEngine { events in
events.forEach {
AnalyticsAPI.send(name: $0.name, metadata: $0.metadata)
}
}
let book = Book(name: "ΧϥϚʔκϑͷܑఋ")
multiEngine.log([BookListAnalyticsEvent.bookAdded(book),
BookDetailAnalyticsEvent.bookAdded(book)])
struct MultipleAnalyticsEngine {
let log: ([AnalyticsEvent]) -> Void
init(log: @escaping ([AnalyticsEvent]) -> Void) {
self.log = log
}
}
let book = Book(name: "ΧϥϚʔκϑͷܑఋ")
multiEngine.log([BookListAnalyticsEvent.bookAdded(book),
BookListAnalyticsEvent.bookAdded(book)])
ຊBookDetailAnalyticsEvent.bookAdded(book)])ΛૹΓ͔ͨͬͨɻɻɻ
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ͦͦ
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protocol AnalyticsEvent {
var name: String { get }
var metadata: [String: Any] { get }
}
"OBMZUJDTʹΑͬͯ
࠶มͷඞཁ͕ग़ͯ͘Δ
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ʁ
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·ͱΊ
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-FU`T
USZBOEFSSPS
-FU`T
FOKPZUSZTXJGU
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͋Γ͕ͱ͏
͍͟͝·ͨ͠
ʁ
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ࢀরϦϯΫ
IUUQTXXXTXJGUCZTVOEFMMDPNQPTUTCVJMEJOHBOFOVNCBTFEBOBMZUJDT
TZTUFNJOTXJGU
IUUQTNBUUEJFQIPVTFDPNXIFOOPUUPVTFBOFOVN
IUUQTEBWFEFMPOHDPNCMPHNJTVTJOHFOVNT
IUUQTXXXZPVUVCFDPNXBUDI W1OR+J+7D1