Fixed: Don't call for server notifications on event driven check

[common]

src/NzbDrone.Core/HealthCheck/HealthCheckService.cs

@@ -77,12 +77,15 @@ namespace NzbDrone.Core.HealthCheck
                 .ToDictionary(g => g.Key, g => g.ToArray());
         }
 
-        private void PerformHealthCheck(IProvideHealthCheck[] healthChecks)
+        private void PerformHealthCheck(IProvideHealthCheck[] healthChecks, bool performServerChecks = false)
         {
             var results = healthChecks.Select(c => c.Check())
                                        .ToList();
 
+            if (performServerChecks)
+            {
                 results.AddRange(_serverSideNotificationService.GetServerChecks());
+            }
 
             foreach (var result in results)
             {
@@ -108,17 +111,17 @@ namespace NzbDrone.Core.HealthCheck
         {
             if (message.Trigger == CommandTrigger.Manual)
             {
-                PerformHealthCheck(_healthChecks);
+                PerformHealthCheck(_healthChecks, true);
             }
             else
             {
-                PerformHealthCheck(_scheduledHealthChecks);
+                PerformHealthCheck(_scheduledHealthChecks, true);
             }
         }
 
         public void HandleAsync(ApplicationStartedEvent message)
         {
-            PerformHealthCheck(_startupHealthChecks);
+            PerformHealthCheck(_startupHealthChecks, true);
         }
 
         public void HandleAsync(IEvent message)

src/NzbDrone.Core/HealthCheck/ServerSideNotificationService.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Runtime.InteropServices;
 using NLog;
+using NzbDrone.Common.Cache;
 using NzbDrone.Common.Cloud;
 using NzbDrone.Common.EnvironmentInfo;
 using NzbDrone.Common.Http;
@@ -23,15 +24,28 @@ namespace NzbDrone.Core.HealthCheck
         private readonly IHttpRequestBuilderFactory _cloudRequestBuilder;
         private readonly Logger _logger;
 
-        public ServerSideNotificationService(IHttpClient client, IConfigFileProvider configFileProvider, IProwlarrCloudRequestBuilder cloudRequestBuilder, Logger logger)
+        private readonly ICached<List<HealthCheck>> _cache;
+
+        public ServerSideNotificationService(IHttpClient client,
+                                             IConfigFileProvider configFileProvider,
+                                             IProwlarrCloudRequestBuilder cloudRequestBuilder,
+                                             ICacheManager cacheManager,
+                                             Logger logger)
         {
             _client = client;
             _configFileProvider = configFileProvider;
             _cloudRequestBuilder = cloudRequestBuilder.Services;
             _logger = logger;
+
+            _cache = cacheManager.GetCache<List<HealthCheck>>(GetType());
         }
 
         public List<HealthCheck> GetServerChecks()
+        {
+            return _cache.Get("ServerChecks", () => RetrieveServerChecks(), TimeSpan.FromHours(2));
+        }
+
+        private List<HealthCheck> RetrieveServerChecks()
         {
             var request = _cloudRequestBuilder.Create()
                                       .Resource("/notification")