Change to make sure all queue's get cleared before suspending the database. Issue #1389

Frameworks/Account/Account.swift

@@ -406,7 +406,6 @@ public final class Account: DisplayNameProvider, UnreadCountProvider, Container,
 	}
 	
 	public func suspend() {
-		delegate.cancelAll(for: self)
 		delegate.suspend()
 		database.suspend()
 		save()

Frameworks/Account/AccountDelegate.swift

@@ -22,7 +22,6 @@ protocol AccountDelegate {
 	
 	var refreshProgress: DownloadProgress { get }
 
-	func cancelAll(for account: Account)
 	func refreshAll(for account: Account, completion: @escaping (Result<Void, Error>) -> Void)
 	func sendArticleStatus(for account: Account, completion: @escaping ((Result<Void, Error>) -> Void))
 	func refreshArticleStatus(for account: Account, completion: @escaping ((Result<Void, Error>) -> Void))

Frameworks/Account/Feedbin/FeedbinAPICaller.swift

@@ -32,6 +32,7 @@ final class FeedbinAPICaller: NSObject {
 	
 	private let feedbinBaseURL = URL(string: "https://api.feedbin.com/v2/")!
 	private var transport: Transport!
+	private var suspended = false
 	
 	var credentials: Credentials?
 	weak var accountMetadata: AccountMetadata?
@@ -41,8 +42,14 @@ final class FeedbinAPICaller: NSObject {
 		self.transport = transport
 	}
 	
-	func cancelAll() {
+	/// Cancels all pending requests rejects any that come in later
+	func suspend() {
 		transport.cancelAll()
+		suspended = true
+	}
+	
+	func resume() {
+		suspended = false
 	}
 	
 	func validateCredentials(completion: @escaping (Result<Credentials?, Error>) -> Void) {
@@ -51,6 +58,12 @@ final class FeedbinAPICaller: NSObject {
 		let request = URLRequest(url: callURL, credentials: credentials)
 		
 		transport.send(request: request) { result in
+			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
 			switch result {
 			case .success:
 				completion(.success(self.credentials))
@@ -78,6 +91,11 @@ final class FeedbinAPICaller: NSObject {
 
 		transport.send(request: request, method: HTTPMethod.post, payload: opmlData) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
 			switch result {
 			case .success(let (_, data)):
 				
@@ -108,6 +126,11 @@ final class FeedbinAPICaller: NSObject {
 		
 		transport.send(request: request, resultType: FeedbinImportResult.self) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
 			switch result {
 			case .success(let (_, importResult)):
 				completion(.success(importResult))
@@ -127,6 +150,11 @@ final class FeedbinAPICaller: NSObject {
 
 		transport.send(request: request, resultType: [FeedbinTag].self) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
 			switch result {
 			case .success(let (response, tags)):
 				self.storeConditionalGet(key: ConditionalGetKeys.tags, headers: response.allHeaderFields)
@@ -143,7 +171,20 @@ final class FeedbinAPICaller: NSObject {
 		let callURL = feedbinBaseURL.appendingPathComponent("tags.json")
 		let request = URLRequest(url: callURL, credentials: credentials)
 		let payload = FeedbinRenameTag(oldName: oldName, newName: newName)
-		transport.send(request: request, method: HTTPMethod.post, payload: payload, completion: completion)
+		
+		transport.send(request: request, method: HTTPMethod.post, payload: payload) { result in
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
+			switch result {
+			case .success:
+				completion(.success(()))
+			case .failure(let error):
+				completion(.failure(error))
+			}
+		}
 	}
 	
 	func retrieveSubscriptions(completion: @escaping (Result<[FeedbinSubscription]?, Error>) -> Void) {
@@ -156,6 +197,11 @@ final class FeedbinAPICaller: NSObject {
 		
 		transport.send(request: request, resultType: [FeedbinSubscription].self) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
 			switch result {
 			case .success(let (response, subscriptions)):
 				self.storeConditionalGet(key: ConditionalGetKeys.subscriptions, headers: response.allHeaderFields)
@@ -186,6 +232,11 @@ final class FeedbinAPICaller: NSObject {
 		
 		transport.send(request: request, method: HTTPMethod.post, payload: payload) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
 			switch result {
 			case .success(let (response, data)):
 				
@@ -246,13 +297,38 @@ final class FeedbinAPICaller: NSObject {
 		let callURL = feedbinBaseURL.appendingPathComponent("subscriptions/\(subscriptionID)/update.json")
 		let request = URLRequest(url: callURL, credentials: credentials)
 		let payload = FeedbinUpdateSubscription(title: newName)
-		transport.send(request: request, method: HTTPMethod.post, payload: payload, completion: completion)
+		
+		transport.send(request: request, method: HTTPMethod.post, payload: payload) { result in
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
+			switch result {
+			case .success:
+				completion(.success(()))
+			case .failure(let error):
+				completion(.failure(error))
+			}
+		}
 	}
 	
 	func deleteSubscription(subscriptionID: String, completion: @escaping (Result<Void, Error>) -> Void) {
 		let callURL = feedbinBaseURL.appendingPathComponent("subscriptions/\(subscriptionID).json")
 		let request = URLRequest(url: callURL, credentials: credentials)
-		transport.send(request: request, method: HTTPMethod.delete, completion: completion)
+		transport.send(request: request, method: HTTPMethod.delete) { result in
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
+			switch result {
+			case .success:
+				completion(.success(()))
+			case .failure(let error):
+				completion(.failure(error))
+			}
+		}
 	}
 	
 	func retrieveTaggings(completion: @escaping (Result<[FeedbinTagging]?, Error>) -> Void) {
@@ -262,7 +338,11 @@ final class FeedbinAPICaller: NSObject {
 		let request = URLRequest(url: callURL, credentials: credentials, conditionalGet: conditionalGet)
 		
 		transport.send(request: request, resultType: [FeedbinTagging].self) { result in
-			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+
 			switch result {
 			case .success(let (response, taggings)):
 				self.storeConditionalGet(key: ConditionalGetKeys.taggings, headers: response.allHeaderFields)
@@ -291,6 +371,11 @@ final class FeedbinAPICaller: NSObject {
 		
 		transport.send(request: request, method: HTTPMethod.post, payload:payload) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+
 			switch result {
 			case .success(let (response, _)):
 				if let taggingLocation = response.valueForHTTPHeaderField(HTTPResponseHeader.location),
@@ -313,7 +398,19 @@ final class FeedbinAPICaller: NSObject {
 		let callURL = feedbinBaseURL.appendingPathComponent("taggings/\(taggingID).json")
 		var request = URLRequest(url: callURL, credentials: credentials)
 		request.addValue("application/json; charset=utf-8", forHTTPHeaderField: HTTPRequestHeader.contentType)
-		transport.send(request: request, method: HTTPMethod.delete, completion: completion)
+		transport.send(request: request, method: HTTPMethod.delete) { result in
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
+			switch result {
+			case .success:
+				completion(.success(()))
+			case .failure(let error):
+				completion(.failure(error))
+			}
+		}
 	}
 	
 	func retrieveEntries(articleIDs: [String], completion: @escaping (Result<([FeedbinEntry]?), Error>) -> Void) {
@@ -336,6 +433,11 @@ final class FeedbinAPICaller: NSObject {
 		
 		transport.send(request: request, resultType: [FeedbinEntry].self) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+
 			switch result {
 			case .success(let (_, entries)):
 				completion(.success((entries)))
@@ -363,6 +465,11 @@ final class FeedbinAPICaller: NSObject {
 		
 		transport.send(request: request, resultType: [FeedbinEntry].self) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+
 			switch result {
 			case .success(let (response, entries)):
 				
@@ -399,6 +506,11 @@ final class FeedbinAPICaller: NSObject {
 		
 		transport.send(request: request, resultType: [FeedbinEntry].self) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+
 			switch result {
 			case .success(let (response, entries)):
 				
@@ -427,6 +539,11 @@ final class FeedbinAPICaller: NSObject {
 
 		transport.send(request: request, resultType: [FeedbinEntry].self) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+
 			switch result {
 			case .success(let (response, entries)):
 				
@@ -449,6 +566,11 @@ final class FeedbinAPICaller: NSObject {
 		
 		transport.send(request: request, resultType: [Int].self) { result in
 			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+
 			switch result {
 			case .success(let (response, unreadEntries)):
 				self.storeConditionalGet(key: ConditionalGetKeys.unreadEntries, headers: response.allHeaderFields)
@@ -465,14 +587,38 @@ final class FeedbinAPICaller: NSObject {
 		let callURL = feedbinBaseURL.appendingPathComponent("unread_entries.json")
 		let request = URLRequest(url: callURL, credentials: credentials)
 		let payload = FeedbinUnreadEntry(unreadEntries: entries)
-		transport.send(request: request, method: HTTPMethod.post, payload: payload, completion: completion)
+		transport.send(request: request, method: HTTPMethod.post, payload: payload) { result in
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
+			switch result {
+			case .success:
+				completion(.success(()))
+			case .failure(let error):
+				completion(.failure(error))
+			}
+		}
 	}
 	
 	func deleteUnreadEntries(entries: [Int], completion: @escaping (Result<Void, Error>) -> Void) {
 		let callURL = feedbinBaseURL.appendingPathComponent("unread_entries.json")
 		let request = URLRequest(url: callURL, credentials: credentials)
 		let payload = FeedbinUnreadEntry(unreadEntries: entries)
-		transport.send(request: request, method: HTTPMethod.delete, payload: payload, completion: completion)
+		transport.send(request: request, method: HTTPMethod.delete, payload: payload) { result in
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
+			switch result {
+			case .success:
+				completion(.success(()))
+			case .failure(let error):
+				completion(.failure(error))
+			}
+		}
 	}
 	
 	func retrieveStarredEntries(completion: @escaping (Result<[Int]?, Error>) -> Void) {
@@ -482,7 +628,11 @@ final class FeedbinAPICaller: NSObject {
 		let request = URLRequest(url: callURL, credentials: credentials, conditionalGet: conditionalGet)
 		
 		transport.send(request: request, resultType: [Int].self) { result in
-			
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+
 			switch result {
 			case .success(let (response, starredEntries)):
 				self.storeConditionalGet(key: ConditionalGetKeys.starredEntries, headers: response.allHeaderFields)
@@ -499,14 +649,38 @@ final class FeedbinAPICaller: NSObject {
 		let callURL = feedbinBaseURL.appendingPathComponent("starred_entries.json")
 		let request = URLRequest(url: callURL, credentials: credentials)
 		let payload = FeedbinStarredEntry(starredEntries: entries)
-		transport.send(request: request, method: HTTPMethod.post, payload: payload, completion: completion)
+		transport.send(request: request, method: HTTPMethod.post, payload: payload) { result in
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
+			switch result {
+			case .success:
+				completion(.success(()))
+			case .failure(let error):
+				completion(.failure(error))
+			}
+		}
 	}
 	
 	func deleteStarredEntries(entries: [Int], completion: @escaping (Result<Void, Error>) -> Void) {
 		let callURL = feedbinBaseURL.appendingPathComponent("starred_entries.json")
 		let request = URLRequest(url: callURL, credentials: credentials)
 		let payload = FeedbinStarredEntry(starredEntries: entries)
-		transport.send(request: request, method: HTTPMethod.delete, payload: payload, completion: completion)
+		transport.send(request: request, method: HTTPMethod.delete, payload: payload) { result in
+			if self.suspended {
+				completion(.failure(TransportError.suspended))
+				return
+			}
+			
+			switch result {
+			case .success:
+				completion(.success(()))
+			case .failure(let error):
+				completion(.failure(error))
+			}
+		}
 	}
 	
 }

Frameworks/Account/Feedbin/FeedbinAccountDelegate.swift

@@ -73,10 +73,6 @@ final class FeedbinAccountDelegate: AccountDelegate {
 	
 	var refreshProgress = DownloadProgress(numberOfTasks: 0)
 	
-	func cancelAll(for account: Account) {
-		caller.cancelAll()
-	}
-
 	func refreshAll(for account: Account, completion: @escaping (Result<Void, Error>) -> Void) {
 		
 		refreshProgress.addToNumberOfTasksAndRemaining(5)
@@ -560,11 +556,13 @@ final class FeedbinAccountDelegate: AccountDelegate {
 
 	/// Suspend the sync database so that it can close its SQLite file.
 	func suspend() {
+		caller.suspend()
 		database.suspend()
 	}
 
 	/// Resume the sync database — let it reopen its SQLite file.
 	func resume() {
+		caller.resume()
 		database.resume()
 	}
 }

Frameworks/Account/Feedly/FeedlyAccountDelegate.swift

@@ -97,10 +97,6 @@ final class FeedlyAccountDelegate: AccountDelegate {
 	
 	// MARK: Account API
 	
-	func cancelAll(for account: Account) {
-		operationQueue.cancelAllOperations()
-	}
-	
 	func refreshAll(for account: Account, completion: @escaping (Result<Void, Error>) -> Void) {
 		assert(Thread.isMainThread)
 		
@@ -515,6 +511,7 @@ final class FeedlyAccountDelegate: AccountDelegate {
 
 	/// Suspend the sync database so that it can close its SQLite file.
 	func suspend() {
+		operationQueue.cancelAllOperations()
 		database.suspend()
 	}
 

Frameworks/Account/ReaderAPI/ReaderAPIAccountDelegate.swift

@@ -79,10 +79,6 @@ final class ReaderAPIAccountDelegate: AccountDelegate {
 	
 	var refreshProgress = DownloadProgress(numberOfTasks: 0)
 	
-	func cancelAll(for account: Account) {
-		caller.cancelAll()
-	}
-	
 	func refreshAll(for account: Account, completion: @escaping (Result<Void, Error>) -> Void) {
 		
 		refreshProgress.addToNumberOfTasksAndRemaining(6)
@@ -441,6 +437,7 @@ final class ReaderAPIAccountDelegate: AccountDelegate {
 
 	/// Suspend the sync database so that it can close its SQLite file.
 	func suspend() {
+		caller.cancelAll()
 		database.suspend()
 	}
 

Shared/Timeline/FetchRequestOperation.swift

@@ -46,12 +46,6 @@ final class FetchRequestOperation {
 			}
 		}
 
-		// The account manager may have been suspended while we were queued up
-		if AccountManager.shared.isSuspended {
-			callCompletionIfNeeded()
-			return
-		}
-		
 		if isCanceled {
 			callCompletionIfNeeded()
 			return

iOS/AppDelegate.swift

@@ -229,6 +229,7 @@ private extension AppDelegate {
 }
 
 // MARK: Go To Background
+
 private extension AppDelegate {
 	
 	func waitForSyncTasksToFinish() {
@@ -269,7 +270,7 @@ private extension AppDelegate {
 	
 	func completeProcessing(_ suspend: Bool) {
 		if suspend {
-			AccountManager.shared.suspendAll()
+			suspendApplication()
 		}
 		UIApplication.shared.endBackgroundTask(self.waitBackgroundUpdateTask)
 		self.waitBackgroundUpdateTask = UIBackgroundTaskIdentifier.invalid
@@ -299,6 +300,16 @@ private extension AppDelegate {
 		}
 	}
 	
+	func suspendApplication() {
+		CoalescingQueue.standard.performCallsImmediately()
+		for scene in UIApplication.shared.connectedScenes {
+			if let sceneDelegate = scene.delegate as? SceneDelegate {
+				sceneDelegate.suspend()
+			}
+		}
+		AccountManager.shared.suspendAll()
+	}
+	
 }
 
 // MARK: Background Tasks
@@ -342,9 +353,9 @@ private extension AppDelegate {
 			if AccountManager.shared.isSuspended {
 				AccountManager.shared.resumeAll()
 			}
-			AccountManager.shared.refreshAll(errorHandler: ErrorHandler.log) {
+			AccountManager.shared.refreshAll(errorHandler: ErrorHandler.log) { [unowned self] in
 				AccountManager.shared.saveAll()
-				AccountManager.shared.suspendAll()
+				self.suspendApplication()
 				os_log("Account refresh operation completed.", log: self.log, type: .info)
 				task?.setTaskCompleted(success: true)
 			}

iOS/SceneCoordinator.swift

@@ -535,6 +535,11 @@ class SceneCoordinator: NSObject, UndoableCommandRunner, UnreadCountProvider {
 
 	// MARK: API
 	
+	func suspend() {
+		fetchAndMergeArticlesQueue.performCallsImmediately()
+		fetchRequestQueue.cancelAllRequests()
+	}
+	
 	func shadowNodesFor(section: Int) -> [Node] {
 		return shadowTable[section]
 	}

iOS/SceneDelegate.swift

@@ -73,6 +73,10 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
 		coordinator.handle(response)
 	}
 
+	func suspend() {
+		coordinator.suspend()
+	}
+	
 }
 
 private extension SceneDelegate {

submodules/RSWeb

@@ -1 +1 @@
-Subproject commit b2ef3e111339ba9dd9070ed0ded8e053135559cb
+Subproject commit 0631696e7383368664a1fe47c58ebcd0ee2d49f8