Health check results are stored in memory and updated as required

src/NzbDrone.Core/HealthCheck/Checks/MonoVersionCheck.cs

@@ -6,7 +6,7 @@ using NzbDrone.Common.Processes;
 
 namespace NzbDrone.Core.HealthCheck.Checks
 {
-    public class MonoVersionCheck : IProvideHealthCheck
+    public class MonoVersionCheck : HealthCheckBase
     {
         private readonly IProcessProvider _processProvider;
         private readonly Logger _logger;
@@ -18,11 +18,11 @@ namespace NzbDrone.Core.HealthCheck.Checks
             _logger = logger;
         }
 
-        public HealthCheck Check()
+        public override HealthCheck Check()
         {
             if (!OsInfo.IsMono)
             {
-                return null;
+                return new HealthCheck(GetType());
             }
 
             var output = _processProvider.StartAndCapture("mono", "--version");
@@ -38,12 +38,28 @@ namespace NzbDrone.Core.HealthCheck.Checks
                     if (version >= new Version(3, 2))
                     {
                         _logger.Debug("mono version is 3.2 or better: {0}", version.ToString());
-                        return null;
+                        return new HealthCheck(GetType());
                     }
                 }
             }
 
-            return new HealthCheck(HealthCheckResultType.Warning, "mono version is less than 3.2, upgrade for improved stability");
+            return new HealthCheck(GetType(), HealthCheckResult.Warning, "mono version is less than 3.2, upgrade for improved stability");
+        }
+
+        public override bool CheckOnConfigChange
+        {
+            get
+            {
+                return false;
+            }
+        }
+
+        public override bool CheckOnSchedule
+        {
+            get
+            {
+                return false;
+            }
         }
     }
 }