Open Radar

 
Summary:
Recently, my Mac OS X app using CloudKit subscriptions stopped receiving change notifications. I have filed a DTS incident #631119498 to help resolve it. I was asked to file a radar as they appear to suspect an issue with the CloudKit infrastructure.

Steps to Reproduce:
What I've done:

1. Save a separate subscription for each of CREATE, UPDATE and DELETE actions. My CKNotificationInfo objects look like this:

- (CKNotificationInfo *)notificationInfo {
    CKNotificationInfo *note = [[CKNotificationInfo alloc] init];
    note.alertBody = @"";
    note.shouldBadge = NO;
    note.shouldSendContentAvailable = YES;
    note.soundName = @"";
    return note;
}

I then save the subscription if it hasn't been saved before using this code:

CKSubscription *sub = [[CKSubscription alloc] initWithRecordType:@"Video" predicate:[NSPredicate predicateWithFormat:@"TRUEPREDICATE"] subscriptionID:ident options:options];
    sub.notificationInfo = [self notificationInfo];
    
    CKContainer * myContainer = [CKContainer containerWithIdentifier:@"iCloud.com.innoveghtive.VideoGrabber"];
    CKDatabase * privateDatabase = [myContainer privateCloudDatabase];
    
    [privateDatabase saveSubscription:sub completionHandler:^(CKSubscription *subscription, NSError *error) {
        if (error) {
            NSLog(@"SUBSCRIPTION ERROR! %@", error);
        }
        else {
            NSLog(@"Sub successful for %@", ident);
        }
    }];

The subscriptions are saved successfully.

2. I register for the push notifications in my Mac app's AppDelegate. I want it to be a silent notification, so I choose that setting:

[NSApp registerForRemoteNotificationTypes:NSRemoteNotificationTypeNone];

I also wrote the delegate methods to check whether I registered:

- (void)application:(NSApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken
{
    NSLog(@"Succeed register with token = %@", deviceToken);
}

That also works every time.

3. I deploy the delegate method to respond to notifications:

- (void)application:(NSApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    [self.windowVC didReceiveNotification:userInfo];  
}

This method is never called.

I have tried a great variety of different techniques and notification info configurations, but nothing takes. 

Expected Results:
My Mac app should receive notifications.

Actual Results:
No notification is received.

Notes:
If you are able to check 631119498 with the DTS team you can see the ongoing discussion around the things we’ve tried to fix this.

In the meantime I have updated my app to periodically check CloudKit for data changes, and that is working fine, if inelegantly.