Use ApiClient in ApiOperation to use retry-mechanism

Zotero/Controllers/API/ApiClient.swift

@@ -45,9 +45,4 @@ protocol ApiClient: AnyObject {
     func upload(request: ApiRequest, queue: DispatchQueue, multipartFormData: @escaping (MultipartFormData) -> Void) -> Single<(Data?, HTTPURLResponse)>
     func upload(request: ApiRequest, data: Data, queue: DispatchQueue) -> Single<(Data?, HTTPURLResponse)>
     func upload(request: ApiRequest, fromFile file: File, queue: DispatchQueue) -> Single<(Data?, HTTPURLResponse)>
-    func operation(from request: ApiRequest, queue: DispatchQueue, completion: @escaping (Swift.Result<(Data?, HTTPURLResponse), Error>) -> Void) -> ApiOperation
-}
-
-protocol ApiRequestCreator: AnyObject {
-    func dataRequest(for request: ApiRequest) -> DataRequest
 }

Zotero/Controllers/API/ApiOperation.swift

@@ -8,60 +8,47 @@
 
 import Foundation
 
-import Alamofire
+import RxSwift
 
 class ApiOperation: AsynchronousOperation {
     private let apiRequest: ApiRequest
-    private let queue: DispatchQueue
+    private let responseQueue: DispatchQueue
     private let completion: (Swift.Result<(Data?, HTTPURLResponse), Error>) -> Void
-    private unowned let requestCreator: ApiRequestCreator
+    private unowned let apiClient: ApiClient
 
-    private var request: DataRequest?
+    private var disposeBag: DisposeBag?
 
-    init(apiRequest: ApiRequest, requestCreator: ApiRequestCreator, queue: DispatchQueue, completion: @escaping (Swift.Result<(Data?, HTTPURLResponse), Error>) -> Void) {
+    init(apiRequest: ApiRequest, apiClient: ApiClient, responseQueue: DispatchQueue, completion: @escaping (Swift.Result<(Data?, HTTPURLResponse), Error>) -> Void) {
         self.apiRequest = apiRequest
-        self.queue = queue
+        self.apiClient = apiClient
+        self.responseQueue = responseQueue
         self.completion = completion
-        self.requestCreator = requestCreator
 
         super.init()
     }
 
     override func main() {
         super.main()
 
-        if let request = self.request {
-            request.resume()
-            return
+        if self.disposeBag != nil {
+            self.disposeBag = nil
         }
 
-        var logData: ApiLogger.StartData?
-        let request = self.requestCreator.dataRequest(for: self.apiRequest)
-
-        request.onURLRequestCreation(on: self.queue) { request in
-            logData = ApiLogger.log(urlRequest: request, encoding: self.apiRequest.encoding, logParams: self.apiRequest.logParams)
-        }
-
-        request.response(queue: self.queue) { [weak self] response in
-            guard let self = self else { return }
-
-            switch response.logAndCreateResult(logData: logData) {
-            case .success(let data):
+        let disposeBag = DisposeBag()
+        self.apiClient.send(request: apiRequest, queue: self.responseQueue)
+            .subscribe(with: self, onSuccess: { `self`, data in
                 self.completion(.success(data))
-
-            case .failure(let error):
+                self.finish()
+            }, onFailure: { `self`, error in
                 self.completion(.failure(error))
-            }
-
-            self.finish()
-        }
-
-        request.resume()
-        self.request = request
+                self.finish()
+            })
+            .disposed(by: disposeBag)
+        self.disposeBag = disposeBag
     }
 
     override func cancel() {
         super.cancel()
-        self.request?.cancel()
+        self.disposeBag = nil
     }
 }

Zotero/Controllers/API/ZoteroApiClient.swift

@@ -114,11 +114,6 @@ final class ZoteroApiClient: ApiClient {
                    }
     }
 
-    /// Creates ApiOperation which performs request.
-    func operation(from request: ApiRequest, queue: DispatchQueue, completion: @escaping (Swift.Result<(Data?, HTTPURLResponse), Error>) -> Void) -> ApiOperation {
-        return ApiOperation(apiRequest: request, requestCreator: self, queue: queue, completion: completion)
-    }
-
     /// Creates download request. Request needs to be started manually.
     func download(request: ApiDownloadRequest, queue: DispatchQueue) -> Observable<DownloadRequest> {
         let convertible = Convertible(request: request, baseUrl: self.url, token: self.token(for: request.endpoint), additionalHeaders: self.manager.sessionConfiguration.httpAdditionalHeaders)
@@ -202,13 +197,6 @@ final class ZoteroApiClient: ApiClient {
     }
 }
 
-extension ZoteroApiClient: ApiRequestCreator {
-    func dataRequest(for request: ApiRequest) -> DataRequest {
-        let convertible = Convertible(request: request, baseUrl: self.url, token: self.token(for: request.endpoint), additionalHeaders: self.manager.sessionConfiguration.httpAdditionalHeaders)
-        return self.createRequest(for: request.endpoint) { $0.request(convertible).validate(acceptableStatusCodes: request.acceptableStatusCodes) }
-    }
-}
-
 extension ResponseHeaders {
     var lastModifiedVersion: Int {
         // Workaround for broken headers (stored in case-sensitive dictionary)

Zotero/Controllers/Sync/SyncBatchProcessor.swift

@@ -34,8 +34,17 @@ final class SyncBatchProcessor {
 
     // MARK: - Lifecycle
 
-    init(batches: [DownloadBatch], userId: Int, apiClient: ApiClient, dbStorage: DbStorage, fileStorage: FileStorage, schemaController: SchemaController, dateParser: DateParser,
-         progress: @escaping (Int) -> Void, completion: @escaping (Result<SyncBatchResponse, Error>) -> Void) {
+    init(
+        batches: [DownloadBatch],
+        userId: Int,
+        apiClient: ApiClient,
+        dbStorage: DbStorage,
+        fileStorage: FileStorage,
+        schemaController: SchemaController,
+        dateParser: DateParser,
+        progress: @escaping (Int) -> Void,
+        completion: @escaping (Result<SyncBatchResponse, Error>) -> Void
+    ) {
         let queue = OperationQueue()
         queue.maxConcurrentOperationCount = 4
         queue.qualityOfService = .userInteractive
@@ -68,7 +77,7 @@ final class SyncBatchProcessor {
         let operations = self.batches.map { batch -> ApiOperation in
             let keysString = batch.keys.map({ "\($0)" }).joined(separator: ",")
             let request = ObjectsRequest(libraryId: batch.libraryId, userId: self.userId, objectType: batch.object, keys: keysString)
-            return self.apiClient.operation(from: request, queue: self.storageQueue) { [weak self] result in
+            return ApiOperation(apiRequest: request, apiClient: self.apiClient, responseQueue: self.storageQueue) { [weak self] result in
                 self?.process(result: result, batch: batch)
             }
         }

Zotero/Controllers/WebDAV/WebDavController.swift

@@ -249,15 +249,15 @@ final class WebDavControllerImpl: WebDavController {
 
             for key in keys {
                 let propRequest = WebDavDeleteRequest(url: url.appendingPathComponent(key + ".prop"))
-                let propOperation = self.apiClient.operation(from: propRequest, queue: queue) { result in
+                let propOperation = ApiOperation(apiRequest: propRequest, apiClient: self.apiClient, responseQueue: queue) { result in
                     queue.async(flags: .barrier) {
                         processResult(key, result)
                     }
                 }
                 operations.append(propOperation)
 
                 let zipRequest = WebDavDeleteRequest(url: url.appendingPathComponent(key + ".zip"))
-                let zipOperation = self.apiClient.operation(from: zipRequest, queue: queue) { result in
+                let zipOperation = ApiOperation(apiRequest: zipRequest, apiClient: self.apiClient, responseQueue: queue) { result in
                     queue.async(flags: .barrier) {
                         processResult(key, result)
                     }