Adding Style Frequency option to rollingfileappender to avoid continuous update based on date.

--HG--
branch : dev

src/Orchard.Web/Config/log4net.config

@@ -16,13 +16,14 @@
     <appender-ref ref="RollingLogFileAppender" />
   </logger>
 
-  <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
+  <appender name="RollingLogFileAppender" type="Orchard.Logging.OrchardFileAppender">
     <file value="App_Data/Logs/orchard-debug-" />
     <appendToFile value="true" />
     <immediateFlush value="true" />
 
     <staticLogFileName value="false" />
     <rollingStyle value="Date" />
+    <rollingStyleFrequency value="Once" />
     <datepattern value="dd.MM.yyyy-hh_mm_ss.fff'.log'" />
 
     <layout type="log4net.Layout.PatternLayout">

src/Orchard/Logging/OrchardFileAppender.cs

@@ -0,0 +1,27 @@
+using log4net.Appender;
+using log4net.Util;
+
+namespace Orchard.Logging {
+    public class OrchardFileAppender : RollingFileAppender {
+        public enum RollingStyleFrequencyMode {
+            Once,
+            Continuous
+        }
+
+        public RollingStyleFrequencyMode RollingStyleFrequency { get; set; }
+
+        public bool RollSize {
+            get { return (RollingStyle == RollingMode.Once || RollingStyle == RollingMode.Size); }
+        }
+
+        protected override void AdjustFileBeforeAppend() {
+            if (RollingStyle == RollingMode.Size || 
+                RollingStyleFrequency == RollingStyleFrequencyMode.Continuous) {
+                base.AdjustFileBeforeAppend();
+            }
+            else if (RollSize && ((File != null) && (((CountingQuietTextWriter)base.QuietWriter).Count >= MaxFileSize))) {
+                RollOverSize();
+            }
+        }
+    }
+}

src/Orchard/Orchard.Framework.csproj

@@ -176,6 +176,7 @@
     <Compile Include="Localization\Services\CurrentCultureWorkContext.cs" />
     <Compile Include="Localization\Services\DefaultLocalizedStringManager.cs" />
     <Compile Include="Localization\Services\ILocalizedStringManager.cs" />
+    <Compile Include="Logging\OrchardFileAppender.cs" />
     <Compile Include="Messaging\Services\DefaultMessageManager.cs" />
     <Compile Include="Mvc\IOrchardViewPage.cs" />
     <Compile Include="Mvc\Spooling\HtmlStringWriter.cs" />