호출

• ConcurrentDispatchQueueScheduler(qos: .background) 이걸 써줘서 fetchCinemaCalendar 가 메인쓰레드가 아닌 곳에서 돌도록

tempNearCinemas
    .flatMap {
        guard let nearestCinema = $0.first else {
            return Observable<CinemaCalendar>.empty()
        }
        return CinemaService.shared.fetchCinemaCalendar(cinema: nearestCinema)
    }
    .subscribe(on: ConcurrentDispatchQueueScheduler(qos: .background))
    .subscribe(onNext: tempCinemaCalendar.onNext(_:))
    .disposed(by: disposeBag)

SwiftSoup 웹 크롤링

func fetchCinemaCalendar(cinema: IndieCinema = IndieCinema.list[0]) -> Observable<CinemaCalendar> {
        
        return Observable<CinemaCalendar>.create { emitter in
            
            let urlString = "<https://www.dtryx.com/cinema/main.do?cgid=FE8EF4D2-F22D-4802-A39A-D58F23A29C1E&BrandCd=\\(cinema.code[0])&CinemaCd=\\(cinema.code[1])>"
            var cinemaCalendar = CinemaCalendar()
            do {
                let html = try String(contentsOf: URL(string: urlString)!, encoding: .utf8)
                let doc: Document = try SwiftSoup.parse(html)
                let elements = try doc.select("div.main-schedule").select("div.swiper-slide").select("a")
                
                for element in elements.array() {
                    if try element.attr("class") == "btnDay disabled" {
                        cinemaCalendar.holidays.append(try element.attr("data-dt"))
                    } else {
                        cinemaCalendar.businessDays.append(try element.attr("data-dt"))
                    }
                    cinemaCalendar.alldays.append(try element.attr("data-dt"))
                }
            } catch {
                print(error.localizedDescription)
            }
            
            emitter.onNext(cinemaCalendar)
            return Disposables.create()
        }
}