546. (ios/swift5) [GraphQL] Subscription 방식 API 요청 및 응답 확인 수행

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[개발 환경 설정]

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개발 툴 : XCODE

개발 언어 : SWIFT5

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[소스 코드]

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    // -----------------------------------------------------------------------------------------
    // MARK: - [SEARCH FAST] : requestSubscriptionHttp
    // -----------------------------------------------------------------------------------------
    func requestSubscriptionHttp(tag: String, url: String, header: Dictionary<String, Any>?, graphql: String?, completion: @escaping (Bool, String)->()) {
        
        /*
         // -----------------------------------------
         [requestSubscriptionHttp 메소드 설명]
         // -----------------------------------------
         1. 비동기 POST 방식 graphql HTTP 통신 수행 및 콜백 반환 실시
         // -----------------------------------------
         2. 호출 방법 :
         
         let tag_ = "GraphQL HTTP 요청"
         let url_ = "https://graphql.postman-echo.com/graphql"
         let header_ : Dictionary<String, Any> = [:]
         var graphql_ = ""
         graphql_ += "subscription Greetings {\n" +
                                     "    greetings\n" +
                                     "}"
         
         
         C_GraphQL_Client_Module().requestSubscriptionHttp(tag: tag_, url: url_, header: header_, graphql: graphql_){(result, response) in
             
             S_Log._F_(description: "HTTP 콜백 결과 확인", data: [response])
             
         }
         // -----------------------------------------
         3. 사전 설정 사항 :
         
         - 필요 info plist 설정
         [1] http 허용 : App Transport Security Settings >> Allow Arbitrary Loads >> YES
         // -----------------------------------------
         */
        
        
        /*
         ================================================================
         LOG :: TYPE :: FILE :: 🔵
         -------------------------------------------------
         LOG :: CLASS PLACE :: C_GraphQL_Client_Module.swift :: requestSubscriptionHttp(tag:url:header:graphql:completion:) :: 720
         -------------------------------------------------
         LOG :: NOW TIME :: 2024-09-06 21:41:13
         -------------------------------------------------
         LOG :: DESCRIPTION :: GraphQL Subscription Http [결과] 확인
         -------------------------------------------------
         LOG :: TAG :: GraphQL HTTP 요청
         -------------------------------------------------
         LOG :: TYPE :: POST >> RESPONSE
         -------------------------------------------------
         LOG :: URL :: https://graphql.postman-echo.com/graphql
         -------------------------------------------------
         LOG :: HEADER :: Optional([:])
         -------------------------------------------------
         LOG :: PARAMS :: ["query": "subscription Greetings {\n    greetings\n}"]
         -------------------------------------------------
         LOG :: STATUS CODE :: 200
         -------------------------------------------------
         LOG :: RESPONSE DATA :: :

         event: next
         data: {"data":{"greetings":"Hi"}}

         event: next
         data: {"data":{"greetings":"Bonjour"}}

         event: next
         data: {"data":{"greetings":"Hola"}}

         event: next
         data: {"data":{"greetings":"Ciao"}}

         event: next
         data: {"data":{"greetings":"Zdravo"}}

         event: complete
         data:
         ================================================================
        // */
        
        
        // -----------------------------------------
        // [사전 방어 로직 체크]
        // -----------------------------------------
        if url.startsWith(_string: "http") == false {
            
            // [콜백 반환]
            completion(false, "[ERROR] :: Url Http Not Start")
            return
        }
        // -----------------------------------------
        if String(describing: graphql ?? "").startsWith(_string: "subscription") == false {
            
            // [콜백 반환]
            completion(false, "[ERROR] :: graphql start string error")
            return
        }
        // -----------------------------------------
        
        
        
        // -----------------------------------------
        // [url 선언 실시]
        // -----------------------------------------
        let urlData = String(describing: url)
        // -----------------------------------------
        
        
        // -----------------------------------------
        // [body json 생성]
        // -----------------------------------------
        let params : Dictionary<String, Any> = ["query": String(describing: graphql ?? "")]
    
        var jsonData: Data? = nil
        
        if C_Util().dicNotNull(dic_: params) == true {
            
            jsonData = try! JSONSerialization.data(withJSONObject: params, options: [])
            
        }
        // -----------------------------------------
        
        
        // -----------------------------------------
        // [URLRequest 생성 실시]

        // -----------------------------------------
        let urlComponents = URLComponents(string: urlData)
        var requestURL = URLRequest(url: (urlComponents?.url)!)
        
        requestURL.httpMethod = "POST"
        
        requestURL.addValue("application/json", forHTTPHeaderField: "Content-Type") // header settings
        requestURL.addValue("no-cache", forHTTPHeaderField: "Cache-Control") // header settings
        
        if C_Util().dicNotNull(dic_: header) == true {
            
            for key in header!.keys {
                
                requestURL.addValue("\(String(describing: header![key] ?? ""))", forHTTPHeaderField: "\(key)")
                
            }

        }
        
        
        // [body 데이터 삽입]
        if jsonData != nil {
            requestURL.httpBody = jsonData // Body 부분에 Json 데이터 삽입 실시
        }
        
        
        S_Log._F_(description: "GraphQL Subscription Http [요청] 수행", data: [
            "TAG :: " + String(describing: tag),
            "TYPE :: POST >> REQUEST",
            "URL :: " + String(describing: urlData),
            "HEADER :: " + String(describing: header),
            "PARAMS :: " + String(describing: params),
        ])
        
        
        // -----------------------------------------
        // [http 요쳥을 위한 URLSessionDataTask 생성]
        // -----------------------------------------
        let sessionConfig = URLSessionConfiguration.default
        sessionConfig.timeoutIntervalForRequest = C_GraphQL_Client_Module.TIME_OUT // [커넥션 타임 아웃 설정]
        sessionConfig.timeoutIntervalForResource = C_GraphQL_Client_Module.TIME_OUT // [리소스 읽기 , 쓰기]
        
        let session = URLSession(configuration: sessionConfig)
        
        S_FileManager.appHttpLogSave(description: String(describing: tag), request: requestURL, data: nil, response: nil, error: nil)
        
        let dataTask = session.dataTask(with: requestURL, completionHandler: { (data, response, error) in
            
            S_FileManager.appHttpLogSave(description: nil, request: nil, data: data, response: response as? HTTPURLResponse, error: error)

            // [error가 존재하면 종료]
            guard error == nil else {
                S_Log._F_(description: "GraphQL Subscription Http [결과] 실패", data: [
                    "TAG :: " + String(describing: tag),
                    "TYPE :: POST >> FAIL",
                    "URL :: " + String(describing: urlData),
                    "HEADER :: " + String(describing: header),
                    "PARAMS :: " + String(describing: params),
                    "ERROR :: \(error?.localizedDescription ?? "")"
                ])
                
                // [콜백 반환]
                completion(false, "[ERROR] :: \(error?.localizedDescription ?? "")")
                return
            }

            
            // [status 코드 체크 실시]
            let successsRange = 200..<300
            guard let statusCode = (response as? HTTPURLResponse)?.statusCode, successsRange.contains(statusCode)
            else {
                S_Log._F_(description: "GraphQL Subscription Http [결과] 에러", data: [
                    "TAG :: " + String(describing: tag),
                    "TYPE :: POST >> ERROR",
                    "URL :: " + String(describing: urlData),
                    "HEADER :: " + String(describing: header),
                    "PARAMS :: " + String(describing: params),
                    "STATUS CODE :: " + String(describing: (response as? HTTPURLResponse)?.statusCode ?? 0),
                    "RESPONSE DATA :: \((response as? HTTPURLResponse)?.description ?? "")"
                ])
                
                // [콜백 반환]
                completion(false, "[ERROR] :: \((response as? HTTPURLResponse)?.description ?? "")")
                return
            }

            
            // [response 데이터 획득]
            let resultCode = (response as? HTTPURLResponse)?.statusCode ?? 0 // [상태 코드]
            let resultData = String(data: data!, encoding: .utf8) ?? "" // [데이터 확인]
            
            S_Log._F_(description: "GraphQL Subscription Http [결과] 확인", data: [
                "TAG :: " + String(describing: tag),
                "TYPE :: POST >> RESPONSE",
                "URL :: " + String(describing: urlData),
                "HEADER :: " + String(describing: header),
                "PARAMS :: " + String(describing: params),
                "STATUS CODE :: " + String(describing: resultCode),
                "RESPONSE DATA :: " + String(describing: resultData)
            ])
            
            // [콜백 반환]
            completion(true, resultData)
        })

        
        // [network 통신 실행]
        dataTask.resume()
    }

 

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[결과 출력]

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