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swift5.libraries.urlsession.URLSessionImplementations.mustache Maven / Gradle / Ivy
// URLSessionImplementations.swift
//
// Generated by openapi-generator
// https://openapi-generator.tech
//
import Foundation
#if !os(macOS)
import MobileCoreServices
#endif
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} protocol URLSessionProtocol {
func dataTask(with request: URLRequest, completionHandler: @escaping @Sendable (Data?, URLResponse?, Error?) -> Void) -> URLSessionDataTask
}
extension URLSession: URLSessionProtocol {}
class URLSessionRequestBuilderFactory: RequestBuilderFactory {
func getNonDecodableBuilder() -> RequestBuilder.Type {
return URLSessionRequestBuilder.self
}
func getBuilder() -> RequestBuilder.Type {
return URLSessionDecodableRequestBuilder.self
}
}
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} typealias {{projectName}}APIChallengeHandler = ((URLSession, URLSessionTask, URLAuthenticationChallenge) -> (URLSession.AuthChallengeDisposition, URLCredential?))
// Store the URLSession's delegate to retain its reference
private let sessionDelegate = SessionDelegate()
// Store the URLSession to retain its reference
private let defaultURLSession = URLSession(configuration: .default, delegate: sessionDelegate, delegateQueue: nil)
// Store current taskDidReceiveChallenge for every URLSessionTask
private var challengeHandlerStore = SynchronizedDictionary()
// Store current URLCredential for every URLSessionTask
private var credentialStore = SynchronizedDictionary()
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class URLSessionRequestBuilder: RequestBuilder {
/**
May be assigned if you want to control the authentication challenges.
*/
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} var taskDidReceiveChallenge: {{projectName}}APIChallengeHandler?
required {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} init(method: String, URLString: String, parameters: [String: Any]?, headers: [String: String] = [:], requiresAuthentication: Bool) {
super.init(method: method, URLString: URLString, parameters: parameters, headers: headers, requiresAuthentication: requiresAuthentication)
}
/**
May be overridden by a subclass if you want to control the URLSession
configuration.
*/
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func createURLSession() -> URLSessionProtocol {
return defaultURLSession
}
/**
May be overridden by a subclass if you want to control the Content-Type
that is given to an uploaded form part.
Return nil to use the default behavior (inferring the Content-Type from
the file extension). Return the desired Content-Type otherwise.
*/
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func contentTypeForFormPart(fileURL: URL) -> String? {
return nil
}
/**
May be overridden by a subclass if you want to control the URLRequest
configuration (e.g. to override the cache policy).
*/
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func createURLRequest(urlSession: URLSessionProtocol, method: HTTPMethod, encoding: ParameterEncoding, headers: [String: String]) throws -> URLRequest {
guard let url = URL(string: URLString) else {
throw DownloadException.requestMissingURL
}
var originalRequest = URLRequest(url: url)
originalRequest.httpMethod = method.rawValue
buildHeaders().forEach { key, value in
originalRequest.setValue(value, forHTTPHeaderField: key)
}
let modifiedRequest = try encoding.encode(originalRequest, with: parameters)
return modifiedRequest
}
@discardableResult
override {{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func execute(_ apiResponseQueue: DispatchQueue = {{projectName}}API.apiResponseQueue, _ completion: @escaping (_ result: Swift.Result, ErrorResponse>) -> Void) -> RequestTask {
let urlSession = createURLSession()
guard let xMethod = HTTPMethod(rawValue: method) else {
fatalError("Unsupported Http method - \(method)")
}
let encoding: ParameterEncoding
switch xMethod {
case .get, .head:
encoding = URLEncoding()
case .options, .post, .put, .patch, .delete, .trace, .connect:
let contentType = headers["Content-Type"] ?? "application/json"
if contentType.hasPrefix("application/json") {
encoding = JSONDataEncoding()
} else if contentType.hasPrefix("multipart/form-data") {
encoding = FormDataEncoding(contentTypeForFormPart: contentTypeForFormPart(fileURL:))
} else if contentType.hasPrefix("application/x-www-form-urlencoded") {
encoding = FormURLEncoding()
} else if contentType.hasPrefix("application/octet-stream"){
encoding = OctetStreamEncoding()
} else {
fatalError("Unsupported Media Type - \(contentType)")
}
}
do {
let request = try createURLRequest(urlSession: urlSession, method: xMethod, encoding: encoding, headers: headers)
var taskIdentifier: Int?
let cleanupRequest = {
if let taskIdentifier = taskIdentifier {
challengeHandlerStore[taskIdentifier] = nil
credentialStore[taskIdentifier] = nil
}
}
let dataTask = urlSession.dataTask(with: request) { data, response, error in
apiResponseQueue.async {
self.processRequestResponse(urlRequest: request, data: data, response: response, error: error, completion: completion)
cleanupRequest()
}
}
onProgressReady?(dataTask.progress)
taskIdentifier = dataTask.taskIdentifier
challengeHandlerStore[dataTask.taskIdentifier] = taskDidReceiveChallenge
credentialStore[dataTask.taskIdentifier] = credential
dataTask.resume()
requestTask.set(task: dataTask)
} catch {
apiResponseQueue.async {
completion(.failure(ErrorResponse.error(415, nil, nil, error)))
}
}
return requestTask
}
fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, response: URLResponse?, error: Error?, completion: @escaping (_ result: Swift.Result, ErrorResponse>) -> Void) {
if let error = error {
completion(.failure(ErrorResponse.error(-1, data, response, error)))
return
}
guard let httpResponse = response as? HTTPURLResponse else {
completion(.failure(ErrorResponse.error(-2, data, response, DecodableRequestBuilderError.nilHTTPResponse)))
return
}
guard httpResponse.isStatusCodeSuccessful else {
completion(.failure(ErrorResponse.error(httpResponse.statusCode, data, response, DecodableRequestBuilderError.unsuccessfulHTTPStatusCode)))
return
}
switch T.self {
case is Void.Type:
completion(.success(Response(response: httpResponse, body: () as! T, bodyData: data)))
default:
fatalError("Unsupported Response Body Type - \(String(describing: T.self))")
}
}
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} func buildHeaders() -> [String: String] {
var httpHeaders: [String: String] = [:]
for (key, value) in {{projectName}}API.customHeaders {
httpHeaders[key] = value
}
for (key, value) in headers {
httpHeaders[key] = value
}
return httpHeaders
}
fileprivate func getFileName(fromContentDisposition contentDisposition: String?) -> String? {
guard let contentDisposition = contentDisposition else {
return nil
}
let items = contentDisposition.components(separatedBy: ";")
var filename: String?
for contentItem in items {
let filenameKey = "filename="
guard let range = contentItem.range(of: filenameKey) else {
continue
}
filename = contentItem
return filename?
.replacingCharacters(in: range, with: "")
.replacingOccurrences(of: "\"", with: "")
.trimmingCharacters(in: .whitespacesAndNewlines)
}
return filename
}
fileprivate func getPath(from url: URL) throws -> String {
guard var path = URLComponents(url: url, resolvingAgainstBaseURL: true)?.path else {
throw DownloadException.requestMissingPath
}
if path.hasPrefix("/") {
path.remove(at: path.startIndex)
}
return path
}
fileprivate func getURL(from urlRequest: URLRequest) throws -> URL {
guard let url = urlRequest.url else {
throw DownloadException.requestMissingURL
}
return url
}
}
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}open{{/nonPublicApi}} class URLSessionDecodableRequestBuilder: URLSessionRequestBuilder {
override fileprivate func processRequestResponse(urlRequest: URLRequest, data: Data?, response: URLResponse?, error: Error?, completion: @escaping (_ result: Swift.Result, ErrorResponse>) -> Void) {
if let error = error {
completion(.failure(ErrorResponse.error(-1, data, response, error)))
return
}
guard let httpResponse = response as? HTTPURLResponse else {
completion(.failure(ErrorResponse.error(-2, data, response, DecodableRequestBuilderError.nilHTTPResponse)))
return
}
guard httpResponse.isStatusCodeSuccessful else {
completion(.failure(ErrorResponse.error(httpResponse.statusCode, data, response, DecodableRequestBuilderError.unsuccessfulHTTPStatusCode)))
return
}
switch T.self {
case is String.Type:
let body = data.flatMap { String(data: $0, encoding: .utf8) } ?? ""
completion(.success(Response(response: httpResponse, body: body as! T, bodyData: data)))
case is URL.Type:
do {
guard error == nil else {
throw DownloadException.responseFailed
}
guard let data = data else {
throw DownloadException.responseDataMissing
}
let fileManager = FileManager.default
let cachesDirectory = fileManager.urls(for: .cachesDirectory, in: .userDomainMask)[0]
let requestURL = try getURL(from: urlRequest)
var requestPath = try getPath(from: requestURL)
if let headerFileName = getFileName(fromContentDisposition: httpResponse.allHeaderFields["Content-Disposition"] as? String) {
requestPath = requestPath.appending("/\(headerFileName)")
} else {
requestPath = requestPath.appending("/tmp.{{projectName}}.\(UUID().uuidString)")
}
let filePath = cachesDirectory.appendingPathComponent(requestPath)
let directoryPath = filePath.deletingLastPathComponent().path
try fileManager.createDirectory(atPath: directoryPath, withIntermediateDirectories: true, attributes: nil)
try data.write(to: filePath, options: .atomic)
completion(.success(Response(response: httpResponse, body: filePath as! T, bodyData: data)))
} catch let requestParserError as DownloadException {
completion(.failure(ErrorResponse.error(400, data, response, requestParserError)))
} catch {
completion(.failure(ErrorResponse.error(400, data, response, error)))
}
case is Void.Type:
completion(.success(Response(response: httpResponse, body: () as! T, bodyData: data)))
case is Data.Type:
completion(.success(Response(response: httpResponse, body: data as! T, bodyData: data)))
default:
guard let unwrappedData = data, !unwrappedData.isEmpty else {
if let expressibleByNilLiteralType = T.self as? ExpressibleByNilLiteral.Type {
completion(.success(Response(response: httpResponse, body: expressibleByNilLiteralType.init(nilLiteral: ()) as! T, bodyData: data)))
} else {
completion(.failure(ErrorResponse.error(httpResponse.statusCode, nil, response, DecodableRequestBuilderError.emptyDataResponse)))
}
return
}
let decodeResult = CodableHelper.decode(T.self, from: unwrappedData)
switch decodeResult {
case let .success(decodableObj):
completion(.success(Response(response: httpResponse, body: decodableObj, bodyData: unwrappedData)))
case let .failure(error):
completion(.failure(ErrorResponse.error(httpResponse.statusCode, unwrappedData, response, error)))
}
}
}
}
private class SessionDelegate: NSObject, URLSessionTaskDelegate {
func urlSession(_ session: URLSession, task: URLSessionTask, didReceive challenge: URLAuthenticationChallenge, completionHandler: @escaping (URLSession.AuthChallengeDisposition, URLCredential?) -> Void) {
var disposition: URLSession.AuthChallengeDisposition = .performDefaultHandling
var credential: URLCredential?
if let taskDidReceiveChallenge = challengeHandlerStore[task.taskIdentifier] {
(disposition, credential) = taskDidReceiveChallenge(session, task, challenge)
} else {
if challenge.previousFailureCount > 0 {
disposition = .rejectProtectionSpace
} else {
credential = credentialStore[task.taskIdentifier] ?? session.configuration.urlCredentialStorage?.defaultCredential(for: challenge.protectionSpace)
if credential != nil {
disposition = .useCredential
}
}
}
completionHandler(disposition, credential)
}
}
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} enum HTTPMethod: String {
case options = "OPTIONS"
case get = "GET"
case head = "HEAD"
case post = "POST"
case put = "PUT"
case patch = "PATCH"
case delete = "DELETE"
case trace = "TRACE"
case connect = "CONNECT"
}
{{#nonPublicApi}}internal{{/nonPublicApi}}{{^nonPublicApi}}public{{/nonPublicApi}} protocol ParameterEncoding {
func encode(_ urlRequest: URLRequest, with parameters: [String: Any]?) throws -> URLRequest
}
private class URLEncoding: ParameterEncoding {
func encode(_ urlRequest: URLRequest, with parameters: [String: Any]?) throws -> URLRequest {
var urlRequest = urlRequest
guard let parameters = parameters else { return urlRequest }
guard let url = urlRequest.url else {
throw DownloadException.requestMissingURL
}
if var urlComponents = URLComponents(url: url, resolvingAgainstBaseURL: false), !parameters.isEmpty {
urlComponents.queryItems = APIHelper.mapValuesToQueryItems(parameters)
urlRequest.url = urlComponents.url
}
return urlRequest
}
}
private class FormDataEncoding: ParameterEncoding {
let contentTypeForFormPart: (_ fileURL: URL) -> String?
init(contentTypeForFormPart: @escaping (_ fileURL: URL) -> String?) {
self.contentTypeForFormPart = contentTypeForFormPart
}
func encode(_ urlRequest: URLRequest, with parameters: [String: Any]?) throws -> URLRequest {
var urlRequest = urlRequest
guard let parameters = parameters, !parameters.isEmpty else {
return urlRequest
}
let boundary = "Boundary-\(UUID().uuidString)"
urlRequest.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
for (key, value) in parameters {
for value in (value as? Array ?? [value]) {
switch value {
case let fileURL as URL:
urlRequest = try configureFileUploadRequest(
urlRequest: urlRequest,
boundary: boundary,
name: key,
fileURL: fileURL
)
case let string as String:
if let data = string.data(using: .utf8) {
urlRequest = configureDataUploadRequest(
urlRequest: urlRequest,
boundary: boundary,
name: key,
data: data
)
}
case let number as NSNumber:
if let data = number.stringValue.data(using: .utf8) {
urlRequest = configureDataUploadRequest(
urlRequest: urlRequest,
boundary: boundary,
name: key,
data: data
)
}
case let data as Data:
urlRequest = configureDataUploadRequest(
urlRequest: urlRequest,
boundary: boundary,
name: key,
data: data
)
case let uuid as UUID:
if let data = uuid.uuidString.data(using: .utf8) {
urlRequest = configureDataUploadRequest(
urlRequest: urlRequest,
boundary: boundary,
name: key,
data: data
)
}
default:
fatalError("Unprocessable value \(value) with key \(key)")
}
}
}
var body = urlRequest.httpBody.orEmpty
body.append("\r\n--\(boundary)--\r\n")
urlRequest.httpBody = body
return urlRequest
}
private func configureFileUploadRequest(urlRequest: URLRequest, boundary: String, name: String, fileURL: URL) throws -> URLRequest {
var urlRequest = urlRequest
var body = urlRequest.httpBody.orEmpty
let fileData = try Data(contentsOf: fileURL)
let mimetype = contentTypeForFormPart(fileURL) ?? mimeType(for: fileURL)
let fileName = fileURL.lastPathComponent
// If we already added something then we need an additional newline.
if body.count > 0 {
body.append("\r\n")
}
// Value boundary.
body.append("--\(boundary)\r\n")
// Value headers.
body.append("Content-Disposition: form-data; name=\"\(name)\"; filename=\"\(fileName)\"\r\n")
body.append("Content-Type: \(mimetype)\r\n")
// Separate headers and body.
body.append("\r\n")
// The value data.
body.append(fileData)
urlRequest.httpBody = body
return urlRequest
}
private func configureDataUploadRequest(urlRequest: URLRequest, boundary: String, name: String, data: Data) -> URLRequest {
var urlRequest = urlRequest
var body = urlRequest.httpBody.orEmpty
// If we already added something then we need an additional newline.
if body.count > 0 {
body.append("\r\n")
}
// Value boundary.
body.append("--\(boundary)\r\n")
// Value headers.
body.append("Content-Disposition: form-data; name=\"\(name)\"\r\n")
// Separate headers and body.
body.append("\r\n")
// The value data.
body.append(data)
urlRequest.httpBody = body
return urlRequest
}
func mimeType(for url: URL) -> String {
let pathExtension = url.pathExtension
if let uti = UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, pathExtension as NSString, nil)?.takeRetainedValue(),
let mimetype = UTTypeCopyPreferredTagWithClass(uti, kUTTagClassMIMEType)?.takeRetainedValue() {
return mimetype as String
}
return "application/octet-stream"
}
}
private class FormURLEncoding: ParameterEncoding {
func encode(_ urlRequest: URLRequest, with parameters: [String: Any]?) throws -> URLRequest {
var urlRequest = urlRequest
var requestBodyComponents = URLComponents()
requestBodyComponents.queryItems = APIHelper.mapValuesToQueryItems(parameters ?? [:])
if urlRequest.value(forHTTPHeaderField: "Content-Type") == nil {
urlRequest.setValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
}
urlRequest.httpBody = requestBodyComponents.query?.data(using: .utf8)
return urlRequest
}
}
private class OctetStreamEncoding: ParameterEncoding {
func encode(_ urlRequest: URLRequest, with parameters: [String: Any]?) throws -> URLRequest {
var urlRequest = urlRequest
guard let body = parameters?["body"] else { return urlRequest }
if urlRequest.value(forHTTPHeaderField: "Content-Type") == nil {
urlRequest.setValue("application/octet-stream", forHTTPHeaderField: "Content-Type")
}
switch body {
case let fileURL as URL:
urlRequest.httpBody = try Data(contentsOf: fileURL)
case let data as Data:
urlRequest.httpBody = data
default:
fatalError("Unprocessable body \(body)")
}
return urlRequest
}
}
private extension Data {
/// Append string to Data
///
/// Rather than littering my code with calls to `dataUsingEncoding` to convert strings to Data, and then add that data to the Data, this wraps it in a nice convenient little extension to Data. This converts using UTF-8.
///
/// - parameter string: The string to be added to the `Data`.
mutating func append(_ string: String) {
if let data = string.data(using: .utf8) {
append(data)
}
}
}
private extension Optional where Wrapped == Data {
var orEmpty: Data {
self ?? Data()
}
}
extension JSONDataEncoding: ParameterEncoding {}
