Added Log4Net and supporting classes from v5 in order to start integration of new diagnostic logging system.

src/Umbraco.Web.UI/Properties/AssemblyInfo.cs

@@ -14,3 +14,5 @@ using System.Runtime.CompilerServices;
 //tg forcing .NET 2.0 security rules, since otherwise it wasn't possible to run in medium trust
 //(got an inheritance security rules violated by type error)
 [assembly: System.Security.SecurityRules(System.Security.SecurityRuleSet.Level1)]
+
+[assembly: log4net.Config.XmlConfigurator(Watch = true)]

src/Umbraco.Web.UI/Umbraco.Web.UI.csproj

@@ -113,6 +113,9 @@
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\lib\ICSharpCode.SharpZipLib.dll</HintPath>
     </Reference>
+    <Reference Include="log4net">
+      <HintPath>..\packages\log4net.2.0.0\lib\net40-full\log4net.dll</HintPath>
+    </Reference>
     <Reference Include="Lucene.Net, Version=2.9.4.1, Culture=neutral, PublicKeyToken=85089178b9ac3181, processorArchitecture=MSIL">
       <SpecificVersion>False</SpecificVersion>
       <HintPath>..\..\lib\Lucene.Net.dll</HintPath>
@@ -264,6 +267,10 @@
     <None Include="config\ClientDependency.Release.config">
       <DependentUpon>ClientDependency.config</DependentUpon>
     </None>
+    <Content Include="config\log4net.config" />
+    <Content Include="config\log4net.Release.config">
+      <DependentUpon>log4net.config</DependentUpon>
+    </Content>
     <None Include="config\xsltExtensions.Release.config">
       <DependentUpon>xsltExtensions.config</DependentUpon>
     </None>
@@ -307,6 +314,7 @@
     <None Include="config\Dashboard.Release.config">
       <DependentUpon>Dashboard.config</DependentUpon>
     </None>
+    <Content Include="packages.config" />
     <None Include="umbraco\config\create\UI.Release.xml">
       <DependentUpon>UI.xml</DependentUpon>
     </None>

src/Umbraco.Web.UI/config/log4net.Release.config

@@ -0,0 +1,25 @@
+<?xml version="1.0"?>
+<log4net>
+	<root>
+		<priority value="Info"/>
+		<appender-ref ref="AsynchronousLog4NetAppender" />
+	</root>
+
+	
+	<!--To Change the way logging works for certain namespaces, insert a new logger like: -->
+	<!--
+	<logger name="Umbraco.Core">
+		<level value="WARN" />
+	</logger>-->
+
+	<appender name="AsynchronousLog4NetAppender" type="Umbraco.Core.Logging.AsynchronousRollingFileAppender, Umbraco.Core">
+		<file value="App_Data\Logs\UmbracoTraceLog.txt" />
+		<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
+		<appendToFile value="true" />
+		<rollingStyle value="Date" />
+		<maximumFileSize value="5MB" />
+		<layout type="log4net.Layout.PatternLayout">
+			<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
+		</layout>
+	</appender>
+</log4net>

src/Umbraco.Web.UI/config/log4net.config

@@ -0,0 +1,25 @@
+<?xml version="1.0"?>
+<log4net>
+	<root>
+		<priority value="Info"/>
+		<appender-ref ref="AsynchronousLog4NetAppender" />
+	</root>
+
+
+	<!--To Change the way logging works for certain namespaces, insert a new logger like: -->
+	<!--
+	<logger name="Umbraco.Core">
+		<level value="WARN" />
+	</logger>-->
+
+	<appender name="AsynchronousLog4NetAppender" type="Umbraco.Core.Logging.AsynchronousRollingFileAppender, Umbraco.Core">
+		<file value="App_Data\Logs\UmbracoTraceLog.txt" />
+		<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
+		<appendToFile value="true" />
+		<rollingStyle value="Date" />
+		<maximumFileSize value="5MB" />
+		<layout type="log4net.Layout.PatternLayout">
+			<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
+		</layout>
+	</appender>
+</log4net>

src/Umbraco.Web.UI/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="log4net" version="2.0.0" targetFramework="net40" />
+</packages>

src/Umbraco.Web.UI/web.Template.config

@@ -57,6 +57,8 @@
 		<add key="enableSimpleMembership" value="false"/>
 		<add key="autoFormsAuthentication" value="false"/>
 		<!-- End of added in Umbraco 4.6.2 -->
+
+		<add key="log4net.Config" value="config\log4net.config" />
 	</appSettings>
 	<system.net>
 		<mailSettings>