Question

How do I use dynamic boolean values on RollingFileAppender

Asked by: weareit

I have ran into a "small" brick wall. Hoping that I can find a couple of log4net guru's here. My situation.

In trying to make my logging as configurable as possible in my application, I have been tinkering with trying to set the boolean values for appendToFile and staticLogFileName as dynamic values. These have a default value (currently stored in the My.Settings metadata). My problem is that when I go to configure the values at runtime I get this error in my stack trace:

log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [SyncLogFile] of type [log4net.Appender.RollingFileAppender]. Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.
at System.Boolean.Parse(String value)
at log4net.Util.TypeConverters.BooleanConverter.ConvertFrom(Object source)
at log4net.Util.OptionConverter.ConvertStringTo(Type target, String txt)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ConvertStringTo(Type type, String value)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.SetParameter(XmlElement element, Object target)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR XmlHierarchyConfigurator: Appender named [SyncLogFile] not found.
log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [ErrLogFile] of type [log4net.Appender.FileAppender]. Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.
at System.Boolean.Parse(String value)
at log4net.Util.TypeConverters.BooleanConverter.ConvertFrom(Object source)
at log4net.Util.OptionConverter.ConvertStringTo(Type target, String txt)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ConvertStringTo(Type type, String value)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.SetParameter(XmlElement element, Object target)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR XmlHierarchyConfigurator: Appender named [ErrLogFile] not found.
log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [SyncLogFile] of type [log4net.Appender.RollingFileAppender]. Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.
at System.Boolean.Parse(String value)
at log4net.Util.TypeConverters.BooleanConverter.ConvertFrom(Object source)
at log4net.Util.OptionConverter.ConvertStringTo(Type target, String txt)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ConvertStringTo(Type type, String value)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.SetParameter(XmlElement element, Object target)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR XmlHierarchyConfigurator: Appender named [SyncLogFile] not found.
log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [ErrLogFile] of type [log4net.Appender.FileAppender]. Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.
at System.Boolean.Parse(String value)
at log4net.Util.TypeConverters.BooleanConverter.ConvertFrom(Object source)
at log4net.Util.OptionConverter.ConvertStringTo(Type target, String txt)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ConvertStringTo(Type type, String value)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.SetParameter(XmlElement element, Object target)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR XmlHierarchyConfigurator: Appender named [ErrLogFile] not found.
log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [SyncLogFile] of type [log4net.Appender.RollingFileAppender]. Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.
at System.Boolean.Parse(String value)
at log4net.Util.TypeConverters.BooleanConverter.ConvertFrom(Object source)
at log4net.Util.OptionConverter.ConvertStringTo(Type target, String txt)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ConvertStringTo(Type type, String value)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.SetParameter(XmlElement element, Object target)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR XmlHierarchyConfigurator: Appender named [SyncLogFile] not found.
log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [ErrLogFile] of type [log4net.Appender.FileAppender]. Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.
at System.Boolean.Parse(String value)
at log4net.Util.TypeConverters.BooleanConverter.ConvertFrom(Object source)
at log4net.Util.OptionConverter.ConvertStringTo(Type target, String txt)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ConvertStringTo(Type type, String value)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.SetParameter(XmlElement element, Object target)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR XmlHierarchyConfigurator: Appender named [ErrLogFile] not found.
log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [SyncLogFile] of type [log4net.Appender.RollingFileAppender]. Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.
at System.Boolean.Parse(String value)
at log4net.Util.TypeConverters.BooleanConverter.ConvertFrom(Object source)
at log4net.Util.OptionConverter.ConvertStringTo(Type target, String txt)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ConvertStringTo(Type type, String value)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.SetParameter(XmlElement element, Object target)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR XmlHierarchyConfigurator: Appender named [SyncLogFile] not found.
log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [ErrLogFile] of type [log4net.Appender.FileAppender]. Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.
at System.Boolean.Parse(String value)
at log4net.Util.TypeConverters.BooleanConverter.ConvertFrom(Object source)
at log4net.Util.OptionConverter.ConvertStringTo(Type target, String txt)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ConvertStringTo(Type type, String value)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.SetParameter(XmlElement element, Object target)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR XmlHierarchyConfigurator: Appender named [ErrLogFile] not found.
log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [SyncLogFile] of type [log4net.Appender.RollingFileAppender]. Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.
at System.Boolean.Parse(String value)
at log4net.Util.TypeConverters.BooleanConverter.ConvertFrom(Object source)
at log4net.Util.OptionConverter.ConvertStringTo(Type target, String txt)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ConvertStringTo(Type type, String value)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.SetParameter(XmlElement element, Object target)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR XmlHierarchyConfigurator: Appender named [SyncLogFile] not found.
log4net:ERROR XmlHierarchyConfigurator: Could not create Appender [ErrLogFile] of type [log4net.Appender.FileAppender]. Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.
at System.Boolean.Parse(String value)
at log4net.Util.TypeConverters.BooleanConverter.ConvertFrom(Object source)
at log4net.Util.OptionConverter.ConvertStringTo(Type target, String txt)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ConvertStringTo(Type type, String value)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.SetParameter(XmlElement element, Object target)
at log4net.Repository.Hierarchy.XmlHierarchyConfigurator.ParseAppender(XmlElement appenderElement)
log4net:ERROR XmlHierarchyConfigurator: Appender named [ErrLogFile] not found.

The way that I am configuring the values is by trying to use the code displayed here.

All of my other appenders work (ConsoleLog, EventLog and ErrLogFile (when I remove the appendToFile paramter).

Please any assistance would be most appreciated.

Thanks,

-saige-

'In Main
	Private Shared Log As ILog
 
	Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
		'[...]
		primeLogging()
		configLog4Net()
		Log = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType)
		Log.Info("This is the start of the application.")
	End Sub
 
	Private Sub primeLogging()
		If Not My.Settings.LogPath = "" Then
			_LogPath = My.Settings.LogPath
		Else
			_LogPath = My.Application.Info.DirectoryPath & "\Logs\"
		End If
 
		'[...]
 
		_MaxRollBacks = My.Settings.MaxRollBacks
		_MaxFileSize = My.Settings.MaxFileSize
 
		_isAppendToFile = My.Settings.isAppendToFile
		_isStaticLogFile = My.Settings.isStaticLogFile
	End Sub
 
	Private Sub configLog4Net()
		log4net.GlobalContext.Properties("LogPath") = _LogPath
		log4net.GlobalContext.Properties("LogName") = _LogName
		log4net.GlobalContext.Properties("RollStyle") = _tempRollStyle
		log4net.GlobalContext.Properties("MaxRollBacks") = _MaxRollBacks
		log4net.GlobalContext.Properties("MaxFileSize") = _MaxFileSize
		log4net.GlobalContext.Properties("isAppendToFile") = _isAppendToFile
		log4net.GlobalContext.Properties("isStaticLogFile") = _isStaticLogFile
		'My attempts to cast as a boolean (did not work)
		'log4net.Util.OptionConverter.ToBoolean(log4net.GlobalContext.Properties("isAppendToFile"), _isAppendToFile)
		'log4net.Util.OptionConverter.ToBoolean(log4net.GlobalContext.Properties("isStaticLogFile"), _isStaticLogFile)
	End Sub
 
'In Log4Net.config (using a seperate configuration file for Log4Net)
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
	<configSections>
		<section name="log4net" type="System.Configuration.IgnoreSectionHandler" />
	</configSections>
	<appSettings>
		<!-- To enable internal log4net logging specify the following appSettings key -->
		<add key="log4net.Internal.Debug" value="true"/>
	</appSettings>
	<!-- This section contains the log4net configuration settings -->
	<log4net>
		<!-- Define some output appenders -->
		<appender name="SyncLogFile" type="log4net.Appender.RollingFileAppender">
			<file type="log4net.Util.PatternString" value="%property{LogPath}\Syncronizations\%property{LogName}" />
			<param name="DatePattern" value=".yyyy-MM-dd-tt.log"/>
			<appendToFile value="%property{isAppendToFile}" />
			<maxSizeRollBackups type="log4net.Util.PatternString" value="%property{MaxRollBacks}" />
			<maximumFileSize type="log4net.Util.PatternString" value="%property{MaxFileSize}" />
			<rollingStyle type="log4net.Util.PatternString" value="%property{RollStyle}" />
			<staticLogFileName value="%property{isStaticLogFile}" />
			<layout type="log4net.Layout.PatternLayout">
				<header type="log4net.Util.PatternString" value="**************************************** Logging Started - %date ******************************************&#13;&#10;" />
				<footer type="log4net.Util.PatternString" value="**************************************** Logging Ended - %date ******************************************&#13;&#10;" />
				<conversionPattern value="%date [%thread] %-5level %logger [%ndc] - %message%newline" />
			</layout>
		</appender>
		<appender name="ErrLogFile" type="log4net.Appender.FileAppender">
			<file type="log4net.Util.PatternString" value="%property{LogPath}\Errors\errLog.txt" />
			<sppendToFile value="%property{isAppendToFile}" />
			<layout type="log4net.Layout.PatternLayout">
				<header type="log4net.Util.PatternString" value="**************************************** Logging Started - %date ******************************************&#13;&#10;" />
				<footer type="log4net.Util.PatternString" value="**************************************** Logging Ended - %date ******************************************&#13;&#10;" />
				<conversionPattern value="%date [%thread] %-5level %logger [%ndc] &lt;%property{auth}&gt; - %message%newline" />
			</layout>
		</appender>
		<appender name="ConsoleLog" type="log4net.Appender.ConsoleAppender">
			<layout type="log4net.Layout.PatternLayout">
				<conversionPattern value="%date [%thread] %-5level %logger [%ndc] &lt;%property{auth}&gt; - %message%newline" />
			</layout>
		</appender>
		<appender name="EventLog" type="log4net.Appender.EventLogAppender">
			<layout type="log4net.Layout.PatternLayout">
				<conversionPattern value="%date [%thread] %-5level %logger [%ndc] &lt;%property{auth}&gt; - %message%newline" />
			</layout>
		</appender>
		<!-- Setup the root category, add the appenders and set the default level -->
		<root>
			<level value="ALL" />
			<appender-ref ref="SyncLogFile" />
			<appender-ref ref="ErrLogFile" />
			<appender-ref ref="ConsoleLog" />
			<appender-ref ref="EventLog" />
		</root>
	</log4net>
</configuration>

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Asked On: 2009-06-04 at 11:32:39ID24464700
Tags: log4net RollingFileAppender appendToFile staticLogFileName
Topics: .NET
,; Programming Languages
,; Microsoft Development
Participating Experts: 1
Points: 0
Comments: 3

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Answers

by: csharppPosted on 2009-06-04 at 22:31:33ID: 24553559

try to use this:

log4net.GlobalContext.Properties("isAppendToFile") = _isAppendToFile ? 1 : 0;
log4net.GlobalContext.Properties("isStaticLogFile") = _isStaticLogFile ? 1 : 0;

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by: weareitPosted on 2009-06-05 at 17:46:36ID: 24561038

Thanks for the attempt csharpp but no dice.

The problem is not with the call in the application, it sets the property just fine, the problem is within the log4net library.
The main problem seems to be that the method that sets the property in the log4net.GlobalContext.Properties sets the variables as %property cast as a string value.

All of my appenders work when I strip out all of the %properties that are non-string based. Which means that I can set the log path and the log filename dynamically but the boolean and int64 values will fail because log4net does not cast these properties as anything other than string values, hence the error in the stack trace:

Reported error follows.
System.FormatException: String was not recognized as a valid Boolean.

I was just hopeing that someone had another method within the log4net library that was used to cast the %property (or any other log4net variable) as a different type.

-saige-

by: weareitPosted on 2009-06-09 at 12:25:23ID: 24584717

Obtained the needed information from another resource. In case anyone else runs into this issue here is the resolution:

In class AdditionalPatternStringAdapters
#Region "Boolean Pattern String"
Public Class PatternStringToBooleanAdapter
      Implements TypeConverters.IConvertTo
 
      Private _ConversionPattern As String
 
      Public Property ConversionPattern() As String
            Get
                  Return _ConversionPattern
            End Get
            Set(ByVal value As String)
                  _ConversionPattern = value
            End Set
      End Property
 
      Public Function CanConvertTo(ByVal targetType As Type) As Boolean Implements TypeConverters.IConvertTo.CanConvertTo
            Console.WriteLine("Taget Type is: " & targetType.ToString & _
             " | Cast Type is: " & GetType(Boolean).ToString & " | CASTABLE: " & (targetType Is GetType(Int32)).ToString)
            Return targetType Is GetType(Boolean)
      End Function
 
      Public Function ConvertTo(ByVal source As Object, ByVal targetType As Type) As Object Implements TypeConverters.IConvertTo.ConvertTo
            Dim patternStringToBooleanAdapter = DirectCast(source, PatternStringToBooleanAdapter)
 
            Dim patternString = New PatternString(patternStringToBooleanAdapter.ConversionPattern)
 
            Dim value As String = patternString.Format()
 
            Return OptionConverter.ToBoolean(value, False)
      End Function
 
End Class
#End Region
 
#Region "Int32 Pattern String"
Public Class PatternStringToInt32Adapter
      Implements TypeConverters.IConvertTo
 
      Private _ConversionPattern As String
 
      Public Property ConversionPattern() As String
            Get
                  Return _ConversionPattern
            End Get
            Set(ByVal value As String)
                  _ConversionPattern = value
            End Set
      End Property
 
      Public Function CanConvertTo(ByVal targetType As Type) As Boolean Implements TypeConverters.IConvertTo.CanConvertTo
            Console.WriteLine("Taget Type is: " & targetType.ToString & _
             " | Cast Type is: " & GetType(Int32).ToString & " | CASTABLE: " & (targetType Is GetType(Int32)).ToString)
            Return targetType Is GetType(Int32)
      End Function
 
      Public Function ConvertTo(ByVal source As Object, ByVal targetType As Type) As Object Implements TypeConverters.IConvertTo.ConvertTo
            Dim patternStringToInt32Adapter = DirectCast(source, PatternStringToInt32Adapter)
 
            Dim patternString = New PatternString(PatternStringToInt32Adapter.ConversionPattern)
 
            Dim value As String = patternString.Format()
 
            If value IsNot Nothing AndAlso value.Length > 0 Then
                  Try
                        Return Int32.Parse(value)
                  Catch e As Exception
                        Console.WriteLine("AdditionalPatternStrings.PatternStringToInt32Adapter: [" & value & "] is not in proper Int32 form.", e)
                        value = 8
                  End Try
            Else
                  value = 8
            End If
 
            Return value
      End Function
 
End Class
#End Region
 
#Region "Rolling Mode Pattern String"
Public Class PatternStringToRollingModeAdapter
      Implements TypeConverters.IConvertTo
 
      Private _ConversionPattern As String
 
      Public Property ConversionPattern() As String
            Get
                  Return _ConversionPattern
            End Get
            Set(ByVal value As String)
                  _ConversionPattern = value
            End Set
      End Property
 
      Public Function CanConvertTo(ByVal targetType As Type) As Boolean Implements TypeConverters.IConvertTo.CanConvertTo
            Console.WriteLine("Taget Type is: " & targetType.ToString & _
             " | Cast Type is: " & GetType(log4net.Appender.RollingFileAppender.RollingMode).ToString & " | CASTABLE: " & (targetType Is GetType(log4net.Appender.RollingFileAppender.RollingMode)).ToString)
            Return targetType Is GetType(log4net.Appender.RollingFileAppender.RollingMode)
      End Function
 
      Public Function ConvertTo(ByVal source As Object, ByVal targetType As Type) As Object Implements TypeConverters.IConvertTo.ConvertTo
            Dim patternStringToRollingModeAdapter = DirectCast(source, PatternStringToRollingModeAdapter)
 
            Dim patternString = New PatternString(patternStringToRollingModeAdapter.ConversionPattern)
 
            Dim value As String = patternString.Format()
            Console.WriteLine("AdditionalPatternStrings.PatternStringRollingModeAdapter: [" & value & "] is the asking to be converted.")
 
            If value IsNot Nothing AndAlso value.Length > 0 Then
                  Try
                        Select Case value
                              Case "Composite"
                                    Return log4net.Appender.RollingFileAppender.RollingMode.Composite
                              Case "Once"
                                    Return log4net.Appender.RollingFileAppender.RollingMode.Composite
                        End Select
                  Catch e As Exception
                        Console.WriteLine("AdditionalPatternStrings.PatternStringToRollingModeAdapter: [" & value & "] is not in proper Rolling Mode form.", e)
                        value = log4net.Appender.RollingFileAppender.RollingMode.Composite
                  End Try
            Else
                  value = log4net.Appender.RollingFileAppender.RollingMode.Composite
            End If
 
            Return log4net.Appender.RollingFileAppender.RollingMode.Composite
      End Function
 
End Class
#End Region
 
In Main
            log4net.Util.TypeConverters.ConverterRegistry.AddConverter(GetType(PatternStringToBooleanAdapter), New PatternStringToBooleanAdapter())
            log4net.Util.TypeConverters.ConverterRegistry.AddConverter(GetType(PatternStringToInt32Adapter), New PatternStringToInt32Adapter())
            log4net.Util.TypeConverters.ConverterRegistry.AddConverter(GetType(PatternStringToRollingModeAdapter), New PatternStringToRollingModeAdapter())
 
In Configuration File
            <appender name="SyncLogFile" type="log4net.Appender.RollingFileAppender">
                  <file type="log4net.Util.PatternString" value="%property{LogPath}\Synchronizations\%property{LogName}" />
                  <datePattern value="yyyy-MM-dd'.log'"/>
                  <appendToFile type="FileSync.PatternStringToBooleanAdapter, FileSync">
                        <conversionPattern value="%property{isAppendToFile}" />
                  </appendToFile >
                  <maxSizeRollBackups type="FileSync.PatternStringToInt32Adapter, FileSync">
                        <conversionPattern value="%property{MaxRollBacks}" />
                  </maxSizeRollBackups >
                  <maximumFileSize type="log4net.Util.PatternString" value="%property{MaxFileSize}" />
                  <staticLogFileName type="FileSync.PatternStringToBooleanAdapter, FileSync">
                        <conversionPattern value="%property{isStaticLogFile}" />
                  </staticLogFileName>
                  <rollingStyle type="FileSync.PatternStringToRollingModeAdapter, FileSync">
                        <conversionPattern value="%property{RollStyle}" />
                  </rollingStyle>
                  <layout type="log4net.Layout.PatternLayout">
                        <header type="log4net.Util.PatternString" value="**************************************** Logging Started - %date ******************************************&#13;&#10;" />
                        <footer type="log4net.Util.PatternString" value="**************************************** Logging Ended - %date ******************************************&#13;&#10;" />
                        <conversionPattern value="%date [%thread] %-5level %logger [%ndc] - %message%newline" />
                  </layout>
            </appender>

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How do I use dynamic boolean values on RollingFileAppender

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