Removed cache from data migration notifier

--HG--
branch : dev

src/Orchard/Data/Migration/DataMigrationManager.cs

@@ -3,7 +3,6 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Reflection;
 using System.Text.RegularExpressions;
-using Orchard.Caching;
 using Orchard.Data.Migration.Interpreters;
 using Orchard.Data.Migration.Records;
 using Orchard.Data.Migration.Schema;
@@ -20,20 +19,17 @@ namespace Orchard.Data.Migration {
         private readonly IRepository<DataMigrationRecord> _dataMigrationRepository;
         private readonly IExtensionManager _extensionManager;
         private readonly IDataMigrationInterpreter _interpreter;
-        private readonly ISignals _signals;
 
         public DataMigrationManager(
             IEnumerable<IDataMigration> dataMigrations, 
             IRepository<DataMigrationRecord> dataMigrationRepository,
             IExtensionManager extensionManager,
-            IDataMigrationInterpreter interpreter,
+            IDataMigrationInterpreter interpreter
-            ISignals signals
             ) {
             _dataMigrations = dataMigrations;
             _dataMigrationRepository = dataMigrationRepository;
             _extensionManager = extensionManager;
             _interpreter = interpreter;
-            _signals = signals;
 
             Logger = NullLogger.Instance;
         }
@@ -82,9 +78,6 @@ namespace Orchard.Data.Migration {
         }
 
         public void Update(string feature){
-            // invalidate the notifications cache
-            _signals.Trigger(DataMigrationNotificationProvider.SignalKey);
-
             Logger.Information("Updating {0}", feature);
 
             // proceed with dependent features first, whatever the module it's in
@@ -152,9 +145,6 @@ namespace Orchard.Data.Migration {
         }
 
         public void Uninstall(string feature) {
-            // invalidate the notifications cache
-            _signals.Trigger(DataMigrationNotificationProvider.SignalKey);
-
             var migrations = GetDataMigrations(feature);
 
             // apply update methods to each migration class for the module

src/Orchard/Data/Migration/DataMigrationNotificationProvider.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
-using Orchard.Caching;
 using Orchard.Localization;
 using Orchard.UI.Admin.Notification;
 using Orchard.UI.Notify;
@@ -9,25 +8,16 @@ using Orchard.UI.Notify;
 namespace Orchard.Data.Migration {
     public class DataMigrationNotificationProvider: INotificationProvider {
         private readonly IDataMigrationManager _dataMigrationManager;
-        private readonly ICacheManager _cacheManager;
-        private readonly ISignals _signals;
-        public const string CacheKey = "DataMigrationNotifications";
-        public const string SignalKey = "DataMigrationNotificationsChanged";
 
-        public DataMigrationNotificationProvider(IDataMigrationManager dataMigrationManager, ICacheManager cacheManager, ISignals signals) {
+        public DataMigrationNotificationProvider(IDataMigrationManager dataMigrationManager) {
             _dataMigrationManager = dataMigrationManager;
-            _cacheManager = cacheManager;
-            _signals = signals;
             T = NullLocalizer.Instance;
         }
 
         public Localizer T { get; set; }
 
         public IEnumerable<NotifyEntry> GetNotifications() {
-            var features = _cacheManager.Get(CacheKey, ctx => {
+            var features = _dataMigrationManager.GetFeaturesThatNeedUpdate();
-                                                           ctx.Monitor(_signals.When(SignalKey));
-                                                           return _dataMigrationManager.GetFeaturesThatNeedUpdate();
-                                                       });
 
             if(features.Any()) {
                 yield return new NotifyEntry { Message = T("Some features need to be upgraded: {0}", String.Join(", ", features)), Type = NotifyType.Warning};