背景
项目开发中，我们或多或少会使用诸如NLog，Log4Net，Kafka+ELK等等日志套件；
基于关注点分离原则，业务开发的时候不应该关注日志具体实现；并且后续能方便切换其他日志套件；
这里先实现基于文件的日志服务，在下一篇将实现基于Kafka+ELK；
具体源码：MasterChief
Nuget：Install-Package MasterChief.DotNet.Core.Log
欢迎Star，欢迎Issues；
日志接口定义
/// <summary>
/// 日志记录接口
/// </summary>
public interface ILogService
{
#region Methods
/// <summary>
/// Debug记录
/// </summary>
/// <param name="message">日志信息</param>
void Debug(string message);
/// <summary>
/// Debug记录
/// </summary>
/// <param name="message">日志信息</param>
/// <param name="ex">异常信息</param>
void Debug(string message, Exception ex);
/// <summary>
/// Error记录
/// </summary>
/// <param name="message">日志信息</param>
void Error(string message);
/// <summary>
/// Error记录
/// </summary>
/// <param name="message">日志信息</param>
/// <param name="ex">异常信息</param>
void Error(string message, Exception ex);
/// <summary>
/// Fatal记录
/// </summary>
/// <param name="message">日志信息</param>
void Fatal(string message);
/// <summary>
/// Fatal记录
/// </summary>
/// <param name="message">日志信息</param>
/// <param name="ex">异常信息</param>
void Fatal(string message, Exception ex);
/// <summary>
/// Info记录
/// </summary>
/// <param name="message">日志信息</param>
void Info(string message);
/// <summary>
/// Info记录
/// </summary>
/// <param name="message">日志信息</param>
/// <param name="ex">异常信息</param>
void Info(string message, Exception ex);
/// <summary>
/// Warn记录
/// </summary>
/// <param name="message">日志信息</param>
void Warn(string message);
/// <summary>
/// Warn记录
/// </summary>
/// <param name="message">日志信息</param>
/// <param name="ex">异常信息</param>
void Warn(string message, Exception ex);
#endregion Methods
}
基于Log4Net本地文件日志服务实现
/// <summary>
/// 基于Log4Net的文件日志记录
/// </summary>
public sealed class FileLogService : ILogService
{
#region Constructors
static FileLogService()
{
DebugLogger = LogManager.GetLogger(DebugLoggerName);
InfoLogger = LogManager.GetLogger(InfoLoggerName);
WarnLogger = LogManager.GetLogger(WarnLoggerName);
ErrorLogger = LogManager.GetLogger(ErrorLoggerName);
FatalLogger = LogManager.GetLogger(FatalLoggerName);
}
#endregion Constructors
#region Fields
/// <summary>
/// The debug logger name
/// </summary>
public const string DebugLoggerName = "DEBUG_FileLogger";
/// <summary>
/// The error logger name
/// </summary>
public const string ErrorLoggerName = "ERROR_FileLogger";
/// <summary>
/// The fatal logger name
/// </summary>
public const string FatalLoggerName = "FATAL_FileLogger";
/// <summary>
/// The information logger name
/// </summary>
public const string InfoLoggerName = "INFO_FileLogger";
/// <summary>
/// The warn logger name
/// </summary>
public const string WarnLoggerName = "WARN_FileLogger";
/// <summary>
/// The debug logger
/// </summary>
public static readonly ILog DebugLogger;
/// <summary>
/// The error logger
/// </summary>
public static readonly ILog ErrorLogger;
/// <summary>
/// The fatal logger
/// </summary>
public static readonly ILog FatalLogger;
/// <summary>
/// The information logger
/// </summary>
public static readonly ILog InfoLogger;
/// <summary>
/// The warn logger
/// </summary>
public static readonly ILog WarnLogger;
#endregion Fields
#region Methods
/// <summary>
/// Debug记录
/// </summary>
/// <param name="message">日志信息</param>
public void Debug(string message)
{
if (DebugLogger.IsDebugEnabled) DebugLogger.Debug(message);
}
/// <summary>
/// Debug记录
/// </summary>
/// <param name="message">日志信息</param>
/// <param name="ex">异常信息</param>
public void Debug(string message, Exception ex)
{
if (DebugLogger.IsDebugEnabled) DebugLogger.Debug(message, ex);
}
/// <summary>
/// Error记录
/// </summary>
/// <param name="message">日志信息</param>
public void Error(string message)
{
if (ErrorLogger.IsErrorEnabled) ErrorLogger.Error(message);
}
/// <summary>
/// Error记录
/// </summary>
/// <param name="message">日志信息</param>
/// <param name="ex">异常信息</param>
public void Error(string message, Exception ex)
{
if (ErrorLogger.IsErrorEnabled) ErrorLogger.Error(message, ex);
}
/// <summary>
/// Fatal记录
/// </summary>
/// <param name="message">日志信息</param>
public void Fatal(string message)
{
if (FatalLogger.IsFatalEnabled) FatalLogger.Fatal(message);
}
/// <summary>
/// Fatal记录
/// </summary>
/// <param name="message">日志信息</param>
/// <param name="ex">异常信息</param>
public void Fatal(string message, Exception ex)
{
if (FatalLogger.IsFatalEnabled) FatalLogger.Fatal(message, ex);
}
/// <summary>
/// Info记录
/// </summary>
/// <param name="message">日志信息</param>
public void Info(string message)
{
if (InfoLogger.IsInfoEnabled) InfoLogger.Info(message);
}
/// <summary>
/// Info记录
/// </summary>
/// <param name="message">日志信息</param>
/// <param name="ex">异常信息</param>
public void Info(string message, Exception ex)
{
if (InfoLogger.IsInfoEnabled) InfoLogger.Info(message, ex);
}
/// <summary>
/// Warn记录
/// </summary>
/// <param name="message">日志信息</param>
public void Warn(string message)
{
if (WarnLogger.IsWarnEnabled) WarnLogger.Warn(message);
}
/// <summary>
/// Warn记录
/// </summary>
/// <param name="message">日志信息</param>
/// <param name="ex">异常信息</param>
public void Warn(string message, Exception ex)
{
if (WarnLogger.IsWarnEnabled) WarnLogger.Warn(message, ex);
}
#endregion Methods
}
Log4Net 配置文件
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler" />
</configSections>
<log4net>
<!-- FileLogger -->
<logger name="FATAL_FileLogger">
<level value="ALL" />
<appender-ref ref="FATAL_FileAppender" />
</logger>
<logger name="ERROR_FileLogger">
<level value="ALL" />
<appender-ref ref="ERROR_FileAppender" />
</logger>
<logger name="WARN_FileLogger">
<level value="ALL" />
<appender-ref ref="WARN_FileAppender" />
</logger>
<logger name="INFO_FileLogger">
<level value="ALL" />
<appender-ref ref="INFO_FileAppender" />
</logger>
<logger name="DEBUG_FileLogger">
<level value="ALL" />
<appender-ref ref="DEBUG_FileAppender" />
</logger>
<!-- AdoNetLogger -->
<!--<logger name="AdoNetLogger">
<level value="ALL" />
<appender-ref ref="AdoNetAppender" />
</logger>-->
<!-- ConsoleLogger -->
<logger name="ConsoleLogger">
<level value="ALL" />
<appender-ref ref="ColoredConsoleAppender" />
</logger>
<!--使用Rolling方式记录日志按照日来记录日志-->
<appender name="FATAL_FileAppender" type="log4net.Appender.RollingFileAppender">
<!--文件名,可以相对路径,也可以绝对路径,这里只给定了文件夹-->
<file value=".\log\\FATAL\\" />
<!--是否增加文件-->
<appendToFile value="true" />
<maxSizeRollBackups value="5" />
<!--日志追加类型,Date为按日期增加文件,Size为按大小-->
<rollingStyle value="Date" />
<!--最小锁定模型以允许多个进程可以写入同一个文件,解决文件独占问题-->
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<!--最大文件大小-->
<maximumFileSize value="10MB" />
<!--文件命名格式,非日期参数化要进行转义,如自定义文件后缀-->
<datePattern value="yyyyMM\\yyyy-MM-dd".log"" />
<!--是否固定文件名-->
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="---------------------------------------------------%newline发生时间：%date %newline事件级别：%-5level %newline事件来源：%logger%newline日志内容：%message%newline" />
</layout>
</appender>
<appender name="ERROR_FileAppender" type="log4net.Appender.RollingFileAppender">
<!--文件名,可以相对路径,也可以绝对路径,这里只给定了文件夹-->
<file value=".\log\\ERROR\\" />
<!--是否增加文件-->
<appendToFile value="true" />
<maxSizeRollBackups value="5" />
<!--日志追加类型,Date为按日期增加文件,Size为按大小-->
<rollingStyle value="Date" />
<!--最小锁定模型以允许多个进程可以写入同一个文件,解决文件独占问题-->
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<!--最大文件大小-->
<maximumFileSize value="10MB" />
<!--文件命名格式,非日期参数化要进行转义,如自定义文件后缀-->
<datePattern value="yyyyMM\\yyyy-MM-dd".log"" />
<!--是否固定文件名-->
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="---------------------------------------------------%newline发生时间：%date %newline事件级别：%-5level %newline事件来源：%logger%newline日志内容：%message%newline" />
</layout>
</appender>
<appender name="WARN_FileAppender" type="log4net.Appender.RollingFileAppender">
<!--文件名,可以相对路径,也可以绝对路径,这里只给定了文件夹-->
<file value=".\log\\WARN\\" />
<!--是否增加文件-->
<appendToFile value="true" />
<maxSizeRollBackups value="5" />
<!--日志追加类型,Date为按日期增加文件,Size为按大小-->
<rollingStyle value="Date" />
<!--最小锁定模型以允许多个进程可以写入同一个文件,解决文件独占问题-->
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<!--最大文件大小-->
<maximumFileSize value="10MB" />
<!--文件命名格式,非日期参数化要进行转义,如自定义文件后缀-->
<datePattern value="yyyyMM\\yyyy-MM-dd".log"" />
<!--是否固定文件名-->
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="---------------------------------------------------%newline发生时间：%date %newline事件级别：%-5level %newline事件来源：%logger%newline日志内容：%message%newline" />
</layout>
</appender>
<appender name="INFO_FileAppender" type="log4net.Appender.RollingFileAppender">
<!--文件名,可以相对路径,也可以绝对路径,这里只给定了文件夹-->
<file value=".\log\\INFO\\" />
<!--是否增加文件-->
<appendToFile value="true" />
<maxSizeRollBackups value="5" />
<!--日志追加类型,Date为按日期增加文件,Size为按大小-->
<rollingStyle value="Date" />
<!--最小锁定模型以允许多个进程可以写入同一个文件,解决文件独占问题-->
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<!--最大文件大小-->
<maximumFileSize value="10MB" />
<!--文件命名格式,非日期参数化要进行转义,如自定义文件后缀-->
<datePattern value="yyyyMM\\yyyy-MM-dd".log"" />
<!--是否固定文件名-->
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="---------------------------------------------------%newline发生时间：%date %newline事件级别：%-5level %newline事件来源：%logger%newline日志内容：%message%newline" />
</layout>
</appender>
<appender name="DEBUG_FileAppender" type="log4net.Appender.RollingFileAppender">
<!--文件名,可以相对路径,也可以绝对路径,这里只给定了文件夹-->
<file value=".\log\\DEBUG\\" />
<!--是否增加文件-->
<appendToFile value="true" />
<maxSizeRollBackups value="5" />
<!--日志追加类型,Date为按日期增加文件,Size为按大小-->
<rollingStyle value="Date" />
<!--最小锁定模型以允许多个进程可以写入同一个文件,解决文件独占问题-->
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<!--最大文件大小-->
<maximumFileSize value="10MB" />
<!--文件命名格式,非日期参数化要进行转义,如自定义文件后缀-->
<datePattern value="yyyyMM\\yyyy-MM-dd".log"" />
<!--是否固定文件名-->
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="---------------------------------------------------%newline发生时间：%date %newline事件级别：%-5level %newline事件来源：%logger%newline日志内容：%message%newline" />
</layout>
</appender>
<!--使用AdoNetAppender方式记录日志按照日来记录日志-->
<!--<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<bufferSize value="1" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<connectionString value="DATABASE=Sample;SERVER=.\SQLEXPRESS;UID=sa;PWD=sasa;Connect Timeout=15;" />
<commandText value="INSERT INTO [Log4Net] ([Date],[Host],[Thread],[Level],[Logger],[Message],[Exception]) VALUES (@log_date, @host, @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="@host" />
<dbType value="String" />
<size value="50" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%property{log4net:HostName}" />
</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="4000" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%message" />
</layout>
</parameter>
<parameter>
<parameterName value="@exception" />
<dbType value="String" />
<size value="4000" />
<layout type="log4net.Layout.ExceptionLayout" />
</parameter>
</appender>-->
<!--使用ConsoleAppender方式记录日志按照日来记录日志-->
<appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
<mapping>
<level value="INFO" />
<foreColor value="White, HighIntensity" />
<backColor value="Green" />
</mapping>
<mapping>
<level value="DEBUG" />
<foreColor value="White, HighIntensity" />
<backColor value="Blue" />
</mapping>
<mapping>
<level value="WARN" />
<foreColor value="Yellow, HighIntensity" />
<backColor value="Purple" />
</mapping>
<mapping>
<level value="ERROR" />
<foreColor value="Yellow, HighIntensity" />
<backColor value="Red" />
</mapping>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="---------------------------------------------------%newline发生时间：%date %newline事件级别：%-5level%newline事件来源：%logger%newline事件行号：%line%newline日志内容：%message%newline" />
</layout>
</appender>
<appender name="UdpAppender" type="log4net.Appender.UdpAppender">
<remoteAddress value="127.0.0.1" />
<remotePort value="7071" />
<layout type="log4net.Layout.XmlLayoutSchemaLog4j" />
</appender>
<root>
<appender-ref ref="UdpAppender" />
</root>
</log4net>
</configuration>
怎么使用
private IKernel _kernel = null;
private ILogService _logService = null;
[TestInitialize]
public void SetUp()
{
_kernel = new StandardKernel(new LogModule());
Assert.IsNotNull(_kernel);
_logService = _kernel.Get<ILogService>();
}
[TestMethod()]
public void DebugTest()
{
_logService.Debug("DebugTest");
}
结语
- 整个实现很简单，就是业务或者功能不依赖具体实现类，这也是开发中最基本原则；
- 小弟不才，大佬轻拍；