When restarting after update if service start fails update app will fallback to console.

NzbDrone.Update.Test/InstallUpdateServiceFixture.cs

@@ -9,10 +9,8 @@
 namespace NzbDrone.Update.Test
 {
     [TestFixture]
-    public class UpdateProviderVerifyFixture : TestBase
+    public class InstallUpdateServiceFixture : TestBase<InstallUpdateService>
     {
-
-
         [SetUp]
         public void Setup()
         {
@@ -25,7 +23,7 @@ public void Setup()
         [TestCase(" ")]
         public void update_should_throw_target_folder_is_blank(string target)
         {
-            Assert.Throws<ArgumentException>(() => Mocker.Resolve<InstallUpdateService>().Start(target))
+            Assert.Throws<ArgumentException>(() => Subject.Start(target))
             .Message.Should().StartWith("Target folder can not be null or empty");
         }
 
@@ -34,7 +32,7 @@ public void update_should_throw_if_target_folder_doesnt_exist()
         {
             string targetFolder = "c:\\NzbDrone\\";
 
-            Assert.Throws<DirectoryNotFoundException>(() => Mocker.Resolve<InstallUpdateService>().Start(targetFolder))
+            Assert.Throws<DirectoryNotFoundException>(() => Subject.Start(targetFolder))
             .Message.Should().StartWith("Target folder doesn't exist");
         }
 
@@ -52,7 +50,7 @@ public void update_should_throw_if_update_folder_doesnt_exist()
                .Setup(c => c.FolderExists(sandboxFolder))
                .Returns(false);
 
-            Assert.Throws<DirectoryNotFoundException>(() => Mocker.Resolve<InstallUpdateService>().Start(targetFolder))
+            Assert.Throws<DirectoryNotFoundException>(() => Subject.Start(targetFolder))
                 .Message.Should().StartWith("Update folder doesn't exist");
         }
     }

NzbDrone.Update.Test/NzbDrone.Update.Test.csproj

@@ -85,8 +85,9 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="StartNzbDroneService.cs" />
     <Compile Include="ProgramFixture.cs" />
-    <Compile Include="UpdateProviderVerifyFixture.cs" />
+    <Compile Include="InstallUpdateServiceFixture.cs" />
     <Compile Include="UpdateProviderStartFixture.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
   </ItemGroup>

NzbDrone.Update.Test/StartNzbDroneService.cs

@@ -0,0 +1,40 @@
+using System;
+using System.IO;
+using FluentAssertions;
+using Moq;
+using NUnit.Framework;
+using NzbDrone.Common;
+using NzbDrone.Test.Common;
+using NzbDrone.Update.UpdateEngine;
+
+namespace NzbDrone.Update.Test
+{
+    [TestFixture]
+    public class StartNzbDroneServiceFixture : TestBase<StartNzbDrone>
+    {
+        [Test]
+        public void should_start_service_if_app_type_was_serivce()
+        {
+            string targetFolder = "c:\\NzbDrone\\";
+
+            Subject.Start(AppType.Service, targetFolder);
+
+            Mocker.GetMock<Common.IServiceProvider>().Verify(c => c.Start(ServiceProvider.NZBDRONE_SERVICE_NAME), Times.Once());
+        }
+
+
+        [Test]
+        public void should_start_console_if_app_type_was_serivce_but_start_failed_because_of_permissions()
+        {
+            string targetFolder = "c:\\NzbDrone\\";
+
+            Mocker.GetMock<Common.IServiceProvider>().Setup(c => c.Start(ServiceProvider.NZBDRONE_SERVICE_NAME)).Throws(new InvalidOperationException());
+
+            Subject.Start(AppType.Service, targetFolder);
+
+            Mocker.GetMock<IProcessProvider>().Verify(c => c.Start("c:\\NzbDrone\\NzbDrone.Console.exe"), Times.Once());
+
+            ExceptionVerification.ExpectedWarns(1);
+        }
+    }
+}

NzbDrone.Update/UpdateEngine/StartNzbDrone.cs

@@ -1,6 +1,8 @@
+using System;
 using System.IO;
 using NLog;
 using NzbDrone.Common;
+using IServiceProvider = NzbDrone.Common.IServiceProvider;
 
 namespace NzbDrone.Update.UpdateEngine
 {
@@ -27,19 +29,43 @@ public void Start(AppType appType, string installationFolder)
             _logger.Info("Starting NzbDrone");
             if (appType == AppType.Service)
             {
-                _logger.Info("Starting NzbDrone service");
+                try
-                _serviceProvider.Start(ServiceProvider.NZBDRONE_SERVICE_NAME);
+                {
+                    StartService();
+
+                }
+                catch (InvalidOperationException e)
+                {
+                    _logger.Warn("Couldn't start NzbDrone Service (Most likely due to permission issues). falling back to console.", e);
+                    StartConsole(installationFolder);
+                }
             }
             else if (appType == AppType.Console)
             {
-                _logger.Info("Starting NzbDrone with Console");
+                StartConsole(installationFolder);
-                _processProvider.Start(Path.Combine(installationFolder, "NzbDrone.Console.exe"));
             }
             else
             {
-                _logger.Info("Starting NzbDrone without Console");
+                StartWinform(installationFolder);
-                _processProvider.Start(Path.Combine(installationFolder, "NzbDrone.exe"));
             }
         }
+
+        private void StartService()
+        {
+            _logger.Info("Starting NzbDrone service");
+            _serviceProvider.Start(ServiceProvider.NZBDRONE_SERVICE_NAME);
+        }
+
+        private void StartWinform(string installationFolder)
+        {
+            _logger.Info("Starting NzbDrone without Console");
+            _processProvider.Start(Path.Combine(installationFolder, "NzbDrone.exe"));
+        }
+
+        private void StartConsole(string installationFolder)
+        {
+            _logger.Info("Starting NzbDrone with Console");
+            _processProvider.Start(Path.Combine(installationFolder, "NzbDrone.Console.exe"));
+        }
     }
 }