Fixed: Ensure grab notifications are sent according to tags requirements

src/NzbDrone.Core/Download/DownloadService.cs

@@ -74,6 +74,7 @@ namespace NzbDrone.Core.Download
                 DownloadClientId = downloadClient.Definition.Id,
                 DownloadClientName = downloadClient.Definition.Name,
                 Redirect = redirect,
+                Indexer = indexer,
                 GrabTrigger = source == "Prowlarr" ? GrabTrigger.Manual : GrabTrigger.Api
             };
 
@@ -152,6 +153,7 @@ namespace NzbDrone.Core.Download
 
             var grabEvent = new IndexerDownloadEvent(release, success, source, host, release.Title, release.DownloadUrl)
             {
+                Indexer = indexer,
                 GrabTrigger = source == "Prowlarr" ? GrabTrigger.Manual : GrabTrigger.Api
             };
 
@@ -204,6 +206,7 @@ namespace NzbDrone.Core.Download
             var grabEvent = new IndexerDownloadEvent(release, true, source, host, release.Title, release.DownloadUrl)
             {
                 Redirect = true,
+                Indexer = indexer,
                 GrabTrigger = source == "Prowlarr" ? GrabTrigger.Manual : GrabTrigger.Api
             };
 

src/NzbDrone.Core/Indexers/Events/IndexerDownloadEvent.cs

@@ -16,6 +16,7 @@ namespace NzbDrone.Core.Indexers.Events
         public string DownloadClient { get; set; }
         public string DownloadClientName { get; set; }
         public string DownloadId { get; set; }
+        public IIndexer Indexer { get; set; }
         public GrabTrigger GrabTrigger { get; set; }
 
         public IndexerDownloadEvent(ReleaseInfo release, bool successful, string source, string host, string title, string url)

src/NzbDrone.Core/Notifications/NotificationService.cs

@@ -1,10 +1,13 @@
 using System;
+using System.Linq;
 using NLog;
 using NzbDrone.Common.Extensions;
 using NzbDrone.Core.HealthCheck;
+using NzbDrone.Core.Indexers;
 using NzbDrone.Core.Indexers.Events;
 using NzbDrone.Core.Messaging.Events;
 using NzbDrone.Core.Parser.Model;
+using NzbDrone.Core.ThingiProvider;
 using NzbDrone.Core.Update.History.Events;
 
 namespace NzbDrone.Core.Notifications
@@ -185,7 +188,8 @@ namespace NzbDrone.Core.Notifications
             {
                 try
                 {
-                    if (ShouldHandleOnGrab(grabMessage, ((NotificationDefinition)notification.Definition).IncludeManualGrabs))
+                    if (ShouldHandleIndexer(notification.Definition, (IndexerDefinition)message.Indexer.Definition) &&
+                        ShouldHandleOnGrab(grabMessage, ((NotificationDefinition)notification.Definition).IncludeManualGrabs))
                     {
                         notification.OnGrab(grabMessage);
                     }
@@ -196,5 +200,26 @@ namespace NzbDrone.Core.Notifications
                 }
             }
         }
+
+        private bool ShouldHandleIndexer(ProviderDefinition definition, ProviderDefinition indexer)
+        {
+            if (definition.Tags.Empty())
+            {
+                _logger.Debug("No tags set for this notification.");
+
+                return true;
+            }
+
+            if (definition.Tags.Intersect(indexer.Tags).Any())
+            {
+                _logger.Debug("Notification and indexer have one or more intersecting tags.");
+
+                return true;
+            }
+
+            _logger.Debug("{0} does not have any intersecting tags with {1}. Notification will not be sent.", definition.Name, indexer.Name);
+
+            return false;
+        }
     }
 }