“NSPersistentCloudKitContainer”

I have been spending the last several weeks implementing NSPersistentCloudKitContainer in my app, and it is most of the way there. Unfortunately, I keep running into an issue where after several days of successful syncing between devices, each device begins to crash after about a minute of use, repeatedly. The crash report points to a SQL thread doing things with the CoreData and CloudKit frameworks — none of my code whatsoever. It is the typical “CPU: 48 seconds cpu time over 58 seconds (82% cpu average), exceeding limit of 80% cpu over 60 seconds” issue. If I run the devices hooked up to Xcode and debug, I see the thread spin up and the log shows it chugging through changed CKRecords it needs to import, just like normal. If I leave the devices hooked up to Xcode, they eventually make it through this huge job and the devices become usable again. Once one device is in this state, the problem also occurs on new devices trying to download from the cloud for the first time. I’ve attached a screenshot of

Hi, I'm using CoreData+CloudKit in a blank universal project for macOS 11 and iOS14. The records are in a private database inside a custom zone, I was able to set the correct database, but I'm yet to be able to set the zone. On the PersistentController created by default by Xcode 12 I have the following code let container: NSPersistentCloudKitContainer init(inMemory: Bool = false) { container = NSPersistentCloudKitContainer(name: finances_manager_pro) let customZone = CKRecordZone(zoneName: CloudCore) guard let description = container.persistentStoreDescriptions.first else { fatalError(Error) } description.cloudKitContainerOptions?.databaseScope = .private if inMemory { container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: /dev/null) } container.loadPersistentStores(completionHandler: { (storeDescription, error) in if let error = error as NSError? { fatalError(Unresolved error (error), (error.userInfo)) } }) } And inside a View @FetchRequest( sortDescriptors: [NSSortDescrip

I am trying to deduplicate data created by NSPersistentCloudKitContainer in my app. I have a universal app, with Share Extensions on both macOS and iOS. On each platform I share a store between the app and the extension with an App Group. The app and the extensions are both configured to sync to CloudKit. (This means local sharing is handled when offline, and a remote share extension will sync to CloudKit work when the main app is closed) This configuration is causing duplicates to be generated. I believe this is because when the macOS app is open, both it and the macOS share extension will try and (almost simultaneously) sync a newly shared object, resulting in two copies in CloudKit. On the macOS app, I can look through the persistent history and see the insertion 'author'. The first insertion is made by the extension macOSShareExtension, the second is made by NSCloudKitMirroringDelegate.import. I could easily make a choice to delete the second object. However, at the same time, on the iOS app, I w

I am trying to add CloudKit sharing to my app using the new iOS 15 share method https://developer.apple.com/documentation/coredata/nspersistentcloudkitcontainer/3746834-sharemanagedobjects In the app there are 3 core data entities (Folder, Item, Comment) with the following relationships: A Folder contains many Items An Item has many Comments I want to use CloudKit to share just the Item entity, not any of its relationships. Is this possible to do with the share(_:to:completion:) method? Currently, when I pass an Item to the share method it also includes the Folder and Comments in the CKShare. How do I prevent this? A similar question was posted here with no response: https://developer.apple.com/forums/thread/697630

I would like to implement notifications about NSPersistentCloudKitContainer I find this classe but I receive no notifications in my app!?! Do I need more settings to use it? thanx for your help import Combine import CoreData @available(iOS 14.0, *) class SyncMonitor { /// Where we store Combine cancellables for publishers we're listening to, e.g. NSPersistentCloudKitContainer's notifications. fileprivate var disposables = Set() init() { NotificationCenter.default.publisher(for: NSPersistentCloudKitContainer.eventChangedNotification) .sink(receiveValue: { notification in if let cloudEvent = notification.userInfo?[NSPersistentCloudKitContainer.eventNotificationUserInfoKey] as? NSPersistentCloudKitContainer.Event { // NSPersistentCloudKitContainer sends a notification when an event starts, and another when it // ends. If it has an endDate, it means the event finished. if cloudEvent.endDate == nil { print(Starting an event...) // You could check the type, but I'm trying to keep this bri

Every of our data row, contains an unique uuid column. Previously, before adopting CloudKit, the uuid column has a unique constraint. This enables us to prevent data duplication. Now, we start to integrate CloudKit, into our existing CoreData. Such unique constraint is removed. The following user flow, will cause data duplication. Steps to cause data duplication when using CloudKit Launch the app for the first time. Since there is empty data, a pre-defined data with pre-defined uuid is generated. The pre-defined data is sync to iCloud. The app is uninstalled. The app is re-installed. Launch the app for the first time. Since there is empty data, a pre-defined data with pre-defined uuid is generated. Previous old pre-defined data from step 3, is sync to the device. We are now having 2 pre-defined data with same uuid! :( I was wondering, is there a way for us to prevent such duplication? In step 8, we wish we have a way to execute such logic before written into CoreData Check whether such uuid exists in CoreData

So I have an entity in my core data model called recipe. I need to create another entity containing a recipe and a date that the recipe is assigned to. Can I do this similar to the way I've done it in the image and just save a Recipe object in the initialization of PlannedRecipe object in the Persistence file? Basically I just need to know how to add a entity in an entity using this core data model and persistence file. Persistence file: import CoreData struct PersistenceController { static let shared = PersistenceController() let container: NSPersistentCloudKitContainer init(inMemory: Bool = false) { container = NSPersistentCloudKitContainer(name: ReciPrep) if inMemory { container.persistentStoreDescriptions.first!.url = URL(fileURLWithPath: /dev/null) } container.loadPersistentStores(completionHandler: { (storeDescription, error) in if let error = error as NSError? { fatalError(Unresolved error (error), (error.userInfo)) } }) container.viewContext.automaticallyMergesChangesFromParent = tru

The com.apple.developer.icloud-container-environment provides the option to set the development or production environment to use for the iCloud containers. My app uses Core Data, and I have implemented NSPersistentCloudKitContainer. When I am not working on schema changes, I would like my local development builds to still access the production Core Data store. However, setting this entitlement to Production has not produced this result... the container is still listed as 'Staging' and I can see in the CloudKit Console that the Development container is being used. Does this entitlement only apply to direct use of CloudKit, and not to NSPersistentCloudKitContainer? If it doesn't apply to the latter, is there another way to direct NSPersistentCloudKitContainer to use the Production container? This is an iOS app though I am beginning work on a macOS version and would like to be able to do this in both environments.

So I created a program without selecting “use core data” and realized after trying to make a persistence data storage that it helps very much so I created a new program and selected it this time and copied everything over. It provided a file called “Persistence” and the contentView file had a bunch of stuff already filled in (Also something called the title of the program). I have the data I need saved to the persistent data storage narrowed down to a singular array, but none of the videos I found online showed this version of xcode that supplied a “Persistence” file when using core data so I’m unsure how to use it. I will provide the contentView and Persistence file for context. The array I need saved is called mainList in contentView. ContentView: import SwiftUI import CoreData struct ContentView: View { var mainList = [RecipeList(),RecipeList(),RecipeList(),RecipeList(),RecipeList()] @Environment(.managedObjectContext) private var viewContext @FetchRequest( sortDescriptors: [NSSortDescriptor(keyPath: Item.