我有一个奇怪的问题,它正在进入log4net。
我已经使用AdoDotNet appender启用了log4net。它通常工作正常,可以登录到数据库,但有时会突然停止工作,不登录到数据库。但是,当我们将级别信息从info更改为debug,然后再次将debug更改为info时,它就会开始工作并登录到数据库。
我做了进一步的研究,启用了log4net内部调试,并并行添加了RollingFileAppenderInforErrorLogger appender,以跟踪is问题是来自AdonetAppender还是log4net general。
所以现在,当这个问题在log4net内部调试中发生时,它抛出下面的错误,并停止登录数据库,除非我在log4net配置中更改某些内容
但它会一直登录到文件appender
这个错误是传输错误,所以我的问题是为什么log4net在出现异常后并没有启动,但仍然登录到文件中?在这种异常之后,我们如何重新启动数据库日志记录。
log4net:ERROR [AdoNetAppender] ErrorCode: GenericFailure. Failed in DoAppend
System.Data.SqlClient.SqlException (0x80131904): A transport-level error has occurred when sending the request to the server. (provider: Named Pipes Provider, error: 0 - The specified network name is no longer available.) ---> System.ComponentModel.Win32Exception (0x80004005): The specified network name is no longer available
at System.Data.SqlClient.TdsParser.TdsExecuteRPC(_SqlRPC[] rpcArray, Int32 timeout, Boolean inSchema, SqlNotificationRequest notificationRequest, TdsParserStateObject stateObj, Boolean isCommandProc, Boolean sync, TaskCompletionSource`1 completion, Int32 startRpc, Int32 startParam)
at System.Data.SqlClient.SqlCommand.RunExecuteReaderTds(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, Boolean async, Int32 timeout, Task& task, Boolean asyncWrite, SqlDataReader ds)
at System.Data.SqlClient.SqlCommand.RunExecuteReader(CommandBehavior cmdBehavior, RunBehavior runBehavior, Boolean returnStream, String method, TaskCompletionSource`1 completion, Int32 timeout, Task& task, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.InternalExecuteNonQuery(TaskCompletionSource`1 completion, String methodName, Boolean sendToPipe, Int32 timeout, Boolean asyncWrite)
at System.Data.SqlClient.SqlCommand.ExecuteNonQuery()
at log4net.Appender.AdoNetAppender.SendBuffer(IDbTransaction dbTran, LoggingEvent[] events)
at log4net.Appender.AdoNetAppender.SendBuffer(LoggingEvent[] events)
at log4net.Appender.BufferingAppenderSkeleton.Append(LoggingEvent loggingEvent)
at log4net.Appender.AppenderSkeleton.DoAppend(LoggingEvent loggingEvent)
ClientConnectionId:a1efe1ac-6986-4a15-a233-7dcfee4ef60e
Error Number:64,State:0,Class:20
下面是我的log4net配置文件。
<?xml version="1.0"?>
<configuration>
<log4net debug="true">
<appender name="DebugAppender" type="log4net.Appender.DebugAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-4timestamp [%thread] %-5level %logger - %message%newline"/>
</layout>
</appender>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-4timestamp [%thread] %-5level %logger - %message%newline"/>
</layout>
</appender>
<appender name="RollingFileAppenderInfoErrorLogger" type="log4net.Appender.RollingFileAppender">
<file value="D:\Halo\Logs\LoaderService.log" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10240KB" />
<staticLogFileName value="true" />
<countDirection value="1"/>
<threshold value="INFO"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %level %logger - %message%newline%newline" />
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<param name="LevelMin" value="INFO"/>
<param name="LevelMax" value="Error"/>
</filter>
</appender>
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="1"/>
<usetransactions value="false"/>
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"/>
<connectionStringName value="HaloAutomationLog"/>
<commandText value="INSERT INTO [HaloAMS].[Logging].[ApplicationLog] ([LogDate],[Thread],[LogLevel],[Logger],[LogMessage],[Exception]) VALUES (@log_date, @thread, @log_level, @logger, @message, @exception)"/>
<parameter>
<parameterName value="@log_date"/>
<dbType value="DateTime"/>
<layout type="log4net.Layout.RawTimeStampLayout"/>
</parameter>
<parameter>
<parameterName value="@thread"/>
<dbType value="String"/>
<size value="255"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%thread"/>
</layout>
</parameter>
<parameter>
<parameterName value="@log_level"/>
<dbType value="String"/>
<size value="50"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%level"/>
</layout>
</parameter>
<parameter>
<parameterName value="@logger"/>
<dbType value="String"/>
<size value="255"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%logger"/>
</layout>
</parameter>
<parameter>
<parameterName value="@message"/>
<dbType value="String"/>
<size value="-1"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%message"/>
</layout>
</parameter>
<parameter>
<parameterName value="@exception"/>
<dbType value="String"/>
<size value="2000"/>
<layout type="log4net.Layout.ExceptionLayout"/>
</parameter>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="RollingFileAppenderInfoErrorLogger" />
<appender-ref ref="AdoNetAppender"/>
</root>
</log4net>
</configuration>
