Trim added to LogProvider.

TrimLogsJob added to trim the logs every 24 hours.

NzbDrone.Core.Test/ProviderTests/LogProviderTest.cs

@@ -222,5 +222,28 @@ namespace NzbDrone.Core.Test.ProviderTests
             logs.Items.Should().HaveCount(50);
             logs.TotalItems.Should().Be(100);
         }
+
+        [Test]
+        public void Trim_Logs_should_clear_logs_older_than_30_days()
+        {
+            //Setup
+            var historyItem = Builder<Log>.CreateListOfSize(20)
+                .TheFirst(10).With(c => c.Time = DateTime.Now)
+                .TheNext(10).With(c => c.Time = DateTime.Now.AddDays(-31))
+                .Build();
+
+            var mocker = new AutoMoqer();
+            var db = MockLib.GetEmptyDatabase();
+            mocker.SetConstant(db);
+
+            db.InsertMany(historyItem);
+
+            //Act
+            db.Fetch<Log>().Should().HaveCount(20);
+            mocker.Resolve<LogProvider>().Trim();
+
+            //Assert
+            db.Fetch<Log>().Should().HaveCount(10);
+        }
     }
 }

NzbDrone.Core/CentralDispatch.cs

@@ -93,6 +93,7 @@ namespace NzbDrone.Core
             Kernel.Bind<IJob>().To<BannerDownloadJob>().InSingletonScope();
             Kernel.Bind<IJob>().To<ConvertEpisodeJob>().InSingletonScope();
             Kernel.Bind<IJob>().To<AppUpdateJob>().InSingletonScope();
+            Kernel.Bind<IJob>().To<TrimLogsJob>().InSingletonScope();
 
             Kernel.Get<JobProvider>().Initialize();
             Kernel.Get<WebTimer>().StartTimer(30);

NzbDrone.Core/Instrumentation/LogProvider.cs

@@ -46,5 +46,11 @@ namespace NzbDrone.Core.Instrumentation
             _database.Delete<Log>("");
             Logger.Info("Cleared Log History");
         }
+
+        public void Trim()
+        {
+            _database.Delete<Log>("WHERE Time < @0", DateTime.Now.AddDays(-30).Date);
+            Logger.Info("Logs have been trimmed, events older than 30 days have been removed");
+        }
     }
 }

NzbDrone.Core/Providers/Jobs/TrimLogsJob.cs

@@ -0,0 +1,35 @@
+using System.Diagnostics;
+using System.IO;
+using NLog;
+using NzbDrone.Common;
+using NzbDrone.Core.Instrumentation;
+using NzbDrone.Core.Model.Notification;
+using NzbDrone.Core.Providers.Core;
+
+namespace NzbDrone.Core.Providers.Jobs
+{
+    public class TrimLogsJob : IJob
+    {
+        private readonly LogProvider _logProvider;
+
+        public TrimLogsJob(LogProvider logProvider)
+        {
+            _logProvider = logProvider;
+        }
+
+        public string Name
+        {
+            get { return "Trim Logs  Job"; }
+        }
+
+        public int DefaultInterval
+        {
+            get { return 1440; }
+        }
+
+        public virtual void Start(ProgressNotification notification, int targetId, int secondaryTargetId)
+        {
+            _logProvider.Trim();
+        }
+    }
+}