AppendToFile resets to False when log file rolled

Fri, 04 Feb 2011 00:59:25 -0800 


Using log4net: 1.2.10.0
Found strange behavior in appendToFile property when RollingFileAppender is used. If appendToFile=True in configuration and when daily roll event fired, property append for the new file gets false. Internal debug is enabled.
If you look you will find that: log4net: FileAppender: Opening file for writing [C:\Applications\Starter\logs\info.log_04-02-2011] append [True] (this is correct) and when file rolling happens new file created but append gets false: log4net: FileAppender: Opening file for writing [C:\Applications\Starter\logs\info.log_05-02-2011] append [False]. Is this right behavior?
So according to SDK: If the value is set to false then the file will be overwritten, if it is set to true then the file will be appended to. The default value is true.
I tested it with setting time to 23:58 and executed my application, waited for 3-5 minutes. 

Internal debug:
#########################################################
log4net: XmlHierarchyConfigurator: Configuration update mode [Merge].
log4net: XmlHierarchyConfigurator: Retrieving an instance of log4net.Repository.Logger for logger [XPressLoggerError]. log4net: XmlHierarchyConfigurator: Setting [XPressLoggerError] additivity to [True]. log4net: XmlHierarchyConfigurator: Logger [XPressLoggerError] Level string is [ALL]. log4net: XmlHierarchyConfigurator: Logger [XPressLoggerError] level set to [name="ALL",value=-2147483648]. log4net: XmlHierarchyConfigurator: Loading Appender [RollingLogFileAppenderError] type: [log4net.Appender.RollingFileAppender] log4net: XmlHierarchyConfigurator: Setting Property [File] to String value [logs\\error.log] log4net: XmlHierarchyConfigurator: Setting Property [LockingModel] to object [log4net.Appender.FileAppender+MinimalLock] log4net: XmlHierarchyConfigurator: Setting Property [AppendToFile] to Boolean value [True] log4net: XmlHierarchyConfigurator: Setting Property [RollingStyle] to RollingMode value [Date] log4net: XmlHierarchyConfigurator: Setting Property [DatePattern] to String value [_dd-MM-yyyy] log4net: XmlHierarchyConfigurator: Setting Property [StaticLogFileName] to Boolean value [False] log4net: PatternParser: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: XmlHierarchyConfigurator: Setting Property [ConversionPattern] to String value [===================================================================%n%-5p %d - %m%n%n] log4net: PatternParser: Converter [literal] Option [===================================================================] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [n] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [p] Option [] Format [min=5,max=2147483647,leftAlign=True] log4net: PatternParser: Converter [literal] Option [ ] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [d] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [literal] Option [ - ] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [m] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [n] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [n] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: XmlHierarchyConfigurator: Setting Property [Layout] to object [log4net.Layout.PatternLayout] log4net: RollingFileAppender: Type = [0], r0 = [_01-01-1970], r1 = [_01-01-1970] log4net: RollingFileAppender: Type = [1], r0 = [_01-01-1970], r1 = [_01-01-1970] log4net: RollingFileAppender: Type = [2], r0 = [_01-01-1970], r1 = [_01-01-1970] log4net: RollingFileAppender: Type = [3], r0 = [_01-01-1970], r1 = [_02-01-1970] log4net: RollingFileAppender: Searched for existing files in [C:\Applications\Starter\logs] 
log4net: RollingFileAppender: curSizeRollBackups starts at [0]
log4net: FileAppender: Opening file for writing [C:\Applications\Starter\logs\error.log_04-02-2011] append [True] log4net: XmlHierarchyConfigurator: Created Appender [RollingLogFileAppenderError] log4net: XmlHierarchyConfigurator: Adding appender named [RollingLogFileAppenderError] to logger [XPressLoggerError]. log4net: XmlHierarchyConfigurator: Retrieving an instance of log4net.Repository.Logger for logger [XPressLoggerInfo]. log4net: XmlHierarchyConfigurator: Setting [XPressLoggerInfo] additivity to [True]. log4net: XmlHierarchyConfigurator: Logger [XPressLoggerInfo] Level string is [ALL]. log4net: XmlHierarchyConfigurator: Logger [XPressLoggerInfo] level set to [name="ALL",value=-2147483648]. log4net: XmlHierarchyConfigurator: Loading Appender [RollingLogFileAppenderInfo] type: [log4net.Appender.RollingFileAppender] log4net: XmlHierarchyConfigurator: Setting Property [File] to String value [logs\\info.log] log4net: XmlHierarchyConfigurator: Setting Property [LockingModel] to object [log4net.Appender.FileAppender+MinimalLock] log4net: XmlHierarchyConfigurator: Setting Property [AppendToFile] to Boolean value [True] log4net: XmlHierarchyConfigurator: Setting Property [RollingStyle] to RollingMode value [Date] log4net: XmlHierarchyConfigurator: Setting Property [DatePattern] to String value [_dd-MM-yyyy] log4net: XmlHierarchyConfigurator: Setting Property [StaticLogFileName] to Boolean value [False] log4net: PatternParser: Converter [message] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [newline] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: XmlHierarchyConfigurator: Setting Property [ConversionPattern] to String value [===================================================================%n%-5p %d - %m%n%n] log4net: PatternParser: Converter [literal] Option [===================================================================] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [n] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [p] Option [] Format [min=5,max=2147483647,leftAlign=True] log4net: PatternParser: Converter [literal] Option [ ] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [d] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [literal] Option [ - ] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [m] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [n] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: PatternParser: Converter [n] Option [] Format [min=-1,max=2147483647,leftAlign=False] log4net: XmlHierarchyConfigurator: Setting Property [Layout] to object [log4net.Layout.PatternLayout] log4net: RollingFileAppender: Type = [0], r0 = [_01-01-1970], r1 = [_01-01-1970] log4net: RollingFileAppender: Type = [1], r0 = [_01-01-1970], r1 = [_01-01-1970] log4net: RollingFileAppender: Type = [2], r0 = [_01-01-1970], r1 = [_01-01-1970] log4net: RollingFileAppender: Type = [3], r0 = [_01-01-1970], r1 = [_02-01-1970] log4net: RollingFileAppender: Searched for existing files in [C:\Applications\Starter\logs] 
log4net: RollingFileAppender: curSizeRollBackups starts at [0]
log4net: FileAppender: Opening file for writing [C:\Applications\Starter\logs\info.log_04-02-2011] append [True] log4net: XmlHierarchyConfigurator: Created Appender [RollingLogFileAppenderInfo] log4net: XmlHierarchyConfigurator: Adding appender named [RollingLogFileAppenderInfo] to logger [XPressLoggerInfo]. 
log4net: XmlHierarchyConfigurator: Hierarchy Threshold []
log4net: Logger: No appenders could be found for logger [XPressLoggerDebug] repository [log4net-default-repository] 
log4net: Logger: Please initialize the log4net system properly.
log4net: Logger:    Current AppDomain context information:
log4net: Logger:       BaseDirectory   : C:\Applications\Starter\
log4net: Logger:       FriendlyName    : Starter.exe
log4net: Logger:       DynamicDirectory:
log4net: FileAppender: Opening file for writing [C:\Applications\Starter\logs\info.log_05-02-2011] append [False] 



Here is my log4net.config:
############################

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" /> 
</configSections>

<log4net debug="true">
<appender name="RollingLogFileAppenderError" type="log4net.Appender.RollingFileAppender"> 
<file value="logs\\error.log" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="_dd-MM-yyyy" />
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="===================================================================%n%-5p %d - %m%n%n" /> 
</layout>
</appender>
<logger name="XPressLoggerError">
<level value="ALL" />
<appender-ref ref="RollingLogFileAppenderError" />
</logger>
<appender name="RollingLogFileAppenderInfo" type="log4net.Appender.RollingFileAppender"> 
<file value="logs\\info.log" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="_dd-MM-yyyy" />
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="===================================================================%n%-5p %d - %m%n%n" /> 
</layout>
</appender>
<logger name="XPressLoggerInfo">
<level value="ALL" />
<appender-ref ref="RollingLogFileAppenderInfo" />
</logger>

</log4net>
</configuration>

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