Merge pull request #1092 from cocoa-mhlw/feature/background-task-bug

バックグラウンドタスクの処理の見直し

Covid19Radar/Covid19Radar.iOS/AppDelegate.cs

@@ -26,6 +26,7 @@
 using System.Threading.Tasks;
 using Prism.Ioc;
 using Covid19Radar.Repository;
+using BackgroundTasks;
 
 namespace Covid19Radar.iOS
 {
@@ -95,10 +96,11 @@ public override bool FinishedLaunching(UIApplication app, NSDictionary launchOpt
  global::Xamarin.Forms.Forms.Init();
  global::Xamarin.Forms.FormsMaterial.Init();
 
+ _loggerService.Value.Info("Initialized xamarin.forms");
+
  FFImageLoading.Forms.Platform.CachedImageRenderer.Init();
  global::FFImageLoading.ImageService.Instance.Initialize(new FFImageLoading.Config.Configuration());
 
-
  _notificationCenterDelegate.OnRecieved += async (UserNotificationCenterDelegate sender, UNNotificationResponse response) =>
  {
  var navigationParameters = new NavigationParameters();
@@ -115,13 +117,17 @@ public override bool FinishedLaunching(UIApplication app, NSDictionary launchOpt
 
  UIApplication.SharedApplication.SetMinimumBackgroundFetchInterval(UIApplication.BackgroundFetchIntervalMinimum);
 
+ // Registration of all launch handlers must be complete before the end of applicationDidFinishLaunching(_:).
+ // https://developer.apple.com/documentation/backgroundtasks/bgtaskscheduler/3180427-register
  ScheduleBackgroundTasks();
 
  return base.FinishedLaunching(app, launchOptions);
  }
 
  private void ScheduleBackgroundTasks()
  {
+ _loggerService.Value.StartMethod();
+
  try
  {
  _exposureDetectionBackgroundService.Value.Schedule();
@@ -148,6 +154,21 @@ private void ScheduleBackgroundTasks()
  {
  _loggerService.Value.Exception("Failed to schedule DataMaintainanceBackgroundService", exception);
  }
+
+ _loggerService.Value.EndMethod();
+ }
+
+ private void LoggingPendingTaskRequests()
+ {
+ _loggerService.Value.Info($"Get pending task requests");
+ BGTaskScheduler.Shared.GetPending(pendingTaskRequests =>
+ {
+ _loggerService.Value.Info($"Pending task count: {pendingTaskRequests.Length}");
+ foreach (var pendingTaskRequest in pendingTaskRequests)
+ {
+ _loggerService.Value.Info($"Identifier: {pendingTaskRequest.Identifier}, EarliestBeginDate: {pendingTaskRequest.EarliestBeginDate}");
+ }
+ });
  }
 
  private bool IsUniversalLinks(NSDictionary launchOptions)
@@ -262,6 +283,15 @@ public override void OnActivated(UIApplication uiApplication)
  {
  base.OnActivated(uiApplication);
  MessagingCenter.Send((object)this, AppConstants.IosOnActivatedMessage);
+
+ try
+ {
+ LoggingPendingTaskRequests();
+ }
+ catch (Exception ex)
+ {
+ _loggerService.Value.Exception("Failure get pending task requests", ex);
+ }
  }
 
  private void RegisterPlatformTypes(IContainer container)

Covid19Radar/Covid19Radar/App.xaml.cs

@@ -39,6 +39,7 @@ public partial class App : PrismApplication
  private IBackupAttributeService BackupAttributeService;
 
  private IEventLogRepository EventLogRepository { get; set; }
+ private IEventLogService EventLogService { get; set; }
 
  /*
  * The Xamarin Forms XAML Previewer in Visual Studio uses System.Activator.CreateInstance.
@@ -61,6 +62,7 @@ protected override void OnInitialized()
  BackupAttributeService.SetSkipBackupAttributeToEventLogDir();
 
  EventLogRepository = Container.Resolve<IEventLogRepository>();
+ EventLogService = Container.Resolve<IEventLogService>();
 
  LogUnobservedTaskExceptions();
 
@@ -243,19 +245,14 @@ private static void RegisterCommonTypes(IContainer container)
 
  protected override async void OnStart()
  {
- LogFileService.Rotate();
-
- await EventLogRepository.RotateAsync(
- AppConstants.EventLogFileExpiredSeconds);
+ base.OnStart();
+ await ExecuteBackgroundTask();
  }
 
  protected override async void OnResume()
  {
  base.OnResume();
- LogFileService.Rotate();
-
- await EventLogRepository.RotateAsync(
- AppConstants.EventLogFileExpiredSeconds);
+ await ExecuteBackgroundTask();
  }
 
  protected override void OnSleep()
@@ -270,5 +267,30 @@ private void LogUnobservedTaskExceptions()
  // maybe think local only logger
  };
  }
+
+ private async Task ExecuteBackgroundTask()
+ {
+ LoggerService.StartMethod();
+
+ try
+ {
+ LogFileService.Rotate();
+
+ await EventLogRepository.RotateAsync(
+ AppConstants.EventLogFileExpiredSeconds);
+
+ await EventLogService.SendAllAsync(
+ AppConstants.EventLogMaxRequestSizeInBytes,
+ AppConstants.EventLogMaxRetry);
+ }
+ catch (Exception ex)
+ {
+ LoggerService.Exception("Failed to manually execute background task", ex);
+ }
+ finally
+ {
+ LoggerService.EndMethod();
+ }
+ }
  }
 }