swift3.AlamofireImplementations.mustache Maven / Gradle / Ivy
// AlamofireImplementations.swift
//
// Generated by swagger-codegen
// https://github.com/swagger-api/swagger-codegen
//
import Foundation
import Alamofire
class AlamofireRequestBuilderFactory: RequestBuilderFactory {
func getBuilder() -> RequestBuilder.Type {
return AlamofireRequestBuilder.self
}
}
private struct SynchronizedDictionary {
private var dictionary = [K: V]()
private let queue = DispatchQueue(
label: "SynchronizedDictionary",
qos: DispatchQoS.userInitiated,
attributes: [DispatchQueue.Attributes.concurrent],
autoreleaseFrequency: DispatchQueue.AutoreleaseFrequency.inherit,
target: nil
)
public subscript(key: K) -> V? {
get {
var value: V?
queue.sync {
value = self.dictionary[key]
}
return value
}
set {
queue.sync(flags: DispatchWorkItemFlags.barrier) {
self.dictionary[key] = newValue
}
}
}
}
class JSONEncodingWrapper: ParameterEncoding {
var bodyParameters: Any?
var encoding: JSONEncoding = JSONEncoding()
public init(parameters: Any?) {
self.bodyParameters = parameters
}
public func encode(_ urlRequest: URLRequestConvertible, with parameters: Parameters?) throws -> URLRequest {
return try encoding.encode(urlRequest, withJSONObject: bodyParameters)
}
}
// Store manager to retain its reference
private var managerStore = SynchronizedDictionary()
open class AlamofireRequestBuilder: RequestBuilder {
required public init(method: String, URLString: String, parameters: Any?, isBody: Bool, headers: [String : String] = [:]) {
super.init(method: method, URLString: URLString, parameters: parameters, isBody: isBody, headers: headers)
}
/**
May be overridden by a subclass if you want to control the session
configuration.
*/
open func createSessionManager() -> Alamofire.SessionManager {
let configuration = URLSessionConfiguration.default
configuration.httpAdditionalHeaders = buildHeaders()
return Alamofire.SessionManager(configuration: configuration)
}
/**
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.
*/
open func contentTypeForFormPart(fileURL: URL) -> String? {
return nil
}
/**
May be overridden by a subclass if you want to control the request
configuration (e.g. to override the cache policy).
*/
open func makeRequest(manager: SessionManager, method: HTTPMethod, encoding: ParameterEncoding, headers: [String:String]) -> DataRequest {
return manager.request(URLString, method: method, parameters: parameters as? Parameters, encoding: encoding, headers: headers)
}
override open func execute(_ completion: @escaping (_ response: Response?, _ error: ErrorResponse?) -> Void) {
let managerId:String = UUID().uuidString
// Create a new manager for each request to customize its request header
let manager = createSessionManager()
managerStore[managerId] = manager
let encoding:ParameterEncoding = isBody ? JSONEncodingWrapper(parameters: parameters) : URLEncoding()
let xMethod = Alamofire.HTTPMethod(rawValue: method)
let param = parameters as? Parameters
let fileKeys = param == nil ? [] : param!.filter { $1 is NSURL }
.map { $0.0 }
if fileKeys.count > 0 {
manager.upload(multipartFormData: { mpForm in
for (k, v) in param! {
switch v {
case let fileURL as URL:
if let mimeType = self.contentTypeForFormPart(fileURL: fileURL) {
mpForm.append(fileURL, withName: k, fileName: fileURL.lastPathComponent, mimeType: mimeType)
}
else {
mpForm.append(fileURL, withName: k)
}
case let string as String:
mpForm.append(string.data(using: String.Encoding.utf8)!, withName: k)
case let number as NSNumber:
mpForm.append(number.stringValue.data(using: String.Encoding.utf8)!, withName: k)
default:
fatalError("Unprocessable value \(v) with key \(k)")
}
}
}, to: URLString, method: xMethod!, headers: nil, encodingCompletion: { encodingResult in
switch encodingResult {
case .success(let upload, _, _):
if let onProgressReady = self.onProgressReady {
onProgressReady(upload.uploadProgress)
}
self.processRequest(request: upload, managerId, completion)
case .failure(let encodingError):
completion(nil, ErrorResponse.HttpError(statusCode: 415, data: nil, error: encodingError))
}
})
} else {
let request = makeRequest(manager: manager, method: xMethod!, encoding: encoding, headers: headers)
if let onProgressReady = self.onProgressReady {
onProgressReady(request.progress)
}
processRequest(request: request, managerId, completion)
}
}
private func processRequest(request: DataRequest, _ managerId: String, _ completion: @escaping (_ response: Response?, _ error: ErrorResponse?) -> Void) {
if let credential = self.credential {
request.authenticate(usingCredential: credential)
}
let cleanupRequest = {
managerStore[managerId] = nil
}
let validatedRequest = request.validate()
switch T.self {
case is String.Type:
validatedRequest.responseString(completionHandler: { (stringResponse) in
cleanupRequest()
if stringResponse.result.isFailure {
completion(
nil,
ErrorResponse.HttpError(statusCode: stringResponse.response?.statusCode ?? 500, data: stringResponse.data, error: stringResponse.result.error as Error!)
)
return
}
completion(
Response(
response: stringResponse.response!,
body: ((stringResponse.result.value ?? "") as! T)
),
nil
)
})
case is Void.Type:
validatedRequest.responseData(completionHandler: { (voidResponse) in
cleanupRequest()
if voidResponse.result.isFailure {
completion(
nil,
ErrorResponse.HttpError(statusCode: voidResponse.response?.statusCode ?? 500, data: voidResponse.data, error: voidResponse.result.error!)
)
return
}
completion(
Response(
response: voidResponse.response!,
body: nil),
nil
)
})
case is Data.Type:
validatedRequest.responseData(completionHandler: { (dataResponse) in
cleanupRequest()
if dataResponse.result.isFailure {
completion(
nil,
ErrorResponse.HttpError(statusCode: dataResponse.response?.statusCode ?? 500, data: dataResponse.data, error: dataResponse.result.error!)
)
return
}
completion(
Response(
response: dataResponse.response!,
body: (dataResponse.data as! T)
),
nil
)
})
case is URL.Type:
validatedRequest.responseData(completionHandler: { (dataResponse) in
cleanupRequest()
do {
guard !dataResponse.result.isFailure else {
throw DownloadException.responseFailed
}
guard let data = dataResponse.data else {
throw DownloadException.responseDataMissing
}
guard let request = request.request else {
throw DownloadException.requestMissing
}
let fileManager = FileManager.default
let urlRequest = try request.asURLRequest()
let documentsDirectory = fileManager.urls(for: .documentDirectory, in: .userDomainMask)[0]
let requestURL = try self.getURL(from: urlRequest)
var requestPath = try self.getPath(from: requestURL)
if let headerFileName = self.getFileName(fromContentDisposition: dataResponse.response?.allHeaderFields["Content-Disposition"] as? String) {
requestPath = requestPath.appending("/\(headerFileName)")
}
let filePath = documentsDirectory.appendingPathComponent(requestPath)
let directoryPath = filePath.deletingLastPathComponent().path
try fileManager.createDirectory(atPath: directoryPath, withIntermediateDirectories: true, attributes: nil)
try data.write(to: filePath, options: .atomic)
completion(
Response(
response: dataResponse.response!,
body: (filePath as! T)
),
nil
)
} catch let requestParserError as DownloadException {
completion(nil, ErrorResponse.HttpError(statusCode: 400, data: dataResponse.data, error: requestParserError))
} catch let error {
completion(nil, ErrorResponse.HttpError(statusCode: 400, data: dataResponse.data, error: error))
}
return
})
default:
validatedRequest.responseJSON(options: .allowFragments) { response in
cleanupRequest()
if response.result.isFailure {
completion(nil, ErrorResponse.HttpError(statusCode: response.response?.statusCode ?? 500, data: response.data, error: response.result.error!))
return
}
// handle HTTP 204 No Content
// NSNull would crash decoders
if response.response?.statusCode == 204 && response.result.value is NSNull{
completion(nil, nil)
return
}
if () is T {
completion(Response(response: response.response!, body: (() as! T)), nil)
return
}
if let json: Any = response.result.value {
let decoded = Decoders.decode(clazz: T.self, source: json as AnyObject, instance: nil)
switch decoded {
case let .success(object): completion(Response(response: response.response!, body: object), nil)
case let .failure(error): completion(nil, ErrorResponse.DecodeError(response: response.data, decodeError: error))
}
return
} else if "" is T {
// swagger-parser currently doesn't support void, which will be fixed in future swagger-parser release
// https://github.com/swagger-api/swagger-parser/pull/34
completion(Response(response: response.response!, body: ("" as! T)), nil)
return
}
completion(nil, ErrorResponse.HttpError(statusCode: 500, data: nil, error: NSError(domain: "localhost", code: 500, userInfo: ["reason": "unreacheable code"])))
}
}
}
open func buildHeaders() -> [String: String] {
var httpHeaders = SessionManager.defaultHTTPHeaders
for (key, value) in self.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? = nil
for contentItem in items {
let filenameKey = "filename="
guard let range = contentItem.range(of: filenameKey) else {
break
}
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
}
}
fileprivate enum DownloadException : Error {
case responseDataMissing
case responseFailed
case requestMissing
case requestMissingPath
case requestMissingURL
}
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