log4net:运行时在不同文件追加器上的不同日志 [英] log4net: different logs on different file appenders at runtime
问题描述
早上好.
我编写了一个等距的C#2.0应用程序(称为 myapp ).
Myapp被多次调用，每次调用都会生成一种任务"，该任务将在单独的线程中执行.
如果您在短时间内多次调用myapp，则任务将并行执行.
I wrote a single istance C# 2.0 app (call it myapp).
Myapp is called many times, and at every call generates a sort of "task" that will be executed in a separated thread.
If you call myapp several times in a short time, task are executed in parallel.
通常，我将log4net用于日志记录目的.我将其配置为在启动时通过XmlConfigurator.Configure(<config>.xml)加载xml文件，然后在需要记录器的每个类中都使用静态LogManager.GetLogger(name)，非常简单.
Generally I use log4net for logging purposes; I configure it loading an xml file by XmlConfigurator.Configure(<config>.xml) at startup, then I use static LogManager.GetLogger(name) in every class I need a logger, quite simple.
相反，这种情况具有挑战性. 我需要做的是:根据每次调用收到的args之一(将其称为 arg )，我需要获取另一个登录不同文件的 RollingFileAppender ， G. .log.
This scenario is challenging, instead. I need to do is this: based on one of the args received on every call (call it arg), I need to get a different RollingFileAppender that logs in a different file, e. g. .log.
仅举一个例子:
第一次通话:myapp.exe -arg:01
-myapp创建thread1
-将新的RollingFileAppender设置为01.log文件(如果不存在的话)
-此线程中使用的对象必须登录01.log文件
1st call: myapp.exe -arg:01
- myapp creates thread1
- set a new RollingFileAppender to 01.log file, if not exists
- objects used in this thread must log in 01.log file
第2次通话:myapp.exe -arg:02
-创建thread2
-将新的RollingFileAppender设置为02.log文件(如果不存在的话)
-此线程中使用的对象必须登录02.log文件，但不能登录log.01
2nd call: myapp.exe -arg:02
- create thread2
- set a new RollingFileAppender to 02.log file, if not exists
- objects used in this thread must log in 02.log file, but not in log.01
第3次通话:myapp.exe -arg:01
-创建thread03
-将RollingFileAppender转到01.log文件(它已经存在！)
-此线程中使用的对象必须登录01.log文件，但不能登录log.02
3rd call: myapp.exe -arg:01
- create thread03
- get the RollingFileAppender to 01.log file (it already exists!)
- objects used in this thread must log in 01.log file, but not in log.02
以此类推.
我不需要将RollingAppender的配置保留在xml文件中，可以通过编程方式创建它；我的想法是使用一个静态包装器类，称为LogHelper，它会基于 arg 创建不存在的附加程序，并在对象需要时分派正确的ILog距离(在类中，我会使用某些东西例如ILog log = LogHelper.GetLogger(name, arg)，以使记录器代替默认的log4net方法LogManager.GetLogger(name))使用.
因此，如果我在2个不同的线程中有2个相同类的距离，则当我记录消息时，每个文件都记录一个，具体取决于 arg (我将在每个对象中注入 arg ，如果需要).
And so on.
I don't need to leave the configuration of RollingAppender in xml file, I can create it programmatically; my idea is to use a static wrapper class, call it LogHelper, that creates appenders if they do not exist based on arg, and that dispatch right ILog istances when needed by objects (in classes I would use something like ILog log = LogHelper.GetLogger(name, arg) to get a logger to use instead o default log4net method LogManager.GetLogger(name)).
So if I have 2 istances of the same class in 2 different threads, when I log messages goes one per file, depending or arg (I will inject arg in every object, if needed).
我在StackOverflow中浏览了很多线程，但是找不到解决方案.
I browse many threads here in StackOverflow, but I can't find a solution.
有人可以指出我正确的方向吗?
Can someone point me to the right direction?
谢谢.
推荐答案
我最终得到了一个略有不同的解决方案.
我创建了一个LogMaster静态类(对不起的名字不好意思)，它的工作方式类似于默认的log4net LogManager类.
区别在于您可以基于arg获得不同的ILog距离:LogMaster将为将要使用的每个不同的arg创建一个新的ILoggerRepository.
I ended up with a slightly different solution.
I created a LogMaster static class (sorry for poor name) that work similar to the default log4net LogManager class.
The difference is that you can get different ILog istances based on arg: LogMaster will create a new ILoggerRepository for each different arg you will use.
代码在这里:
#region Usings
using System;
using System.IO;
using log4net;
using log4net.Appender;
using log4net.Config;
using log4net.Core;
using log4net.Filter;
using log4net.Layout;
using log4net.Repository;
using log4net.Repository.Hierarchy;
#endregion
namespace Common.Voyager
{
/// <summary>
/// A static class that emulates defualt log4net LogManager static class.
/// The difference is that you can get various loggers istances based from an args.
/// LogMaster will create a different logger repository for each new arg it will receive.
/// </summary>
public static class LogMaster
{
#region Const
private const string RollingFileAppenderNameDefault = "Rolling";
private const string MemoryAppenderNameDefault = "Memory";
#endregion
#region Constructors
static LogMaster()
{
}
#endregion
#region Public Methods
public static ILog GetLogger(string arg, string name)
{
//It will create a repository for each different arg it will receive
var repositoryName = arg;
ILoggerRepository repository = null;
var repositories = LogManager.GetAllRepositories();
foreach (var loggerRepository in repositories)
{
if (loggerRepository.Name.Equals(repositoryName))
{
repository = loggerRepository;
break;
}
}
Hierarchy hierarchy = null;
if (repository == null)
{
//Create a new repository
repository = LogManager.CreateRepository(repositoryName);
hierarchy = (Hierarchy)repository;
hierarchy.Root.Additivity = false;
//Add appenders you need: here I need a rolling file and a memoryappender
var rollingAppender = GetRollingAppender(repositoryName);
hierarchy.Root.AddAppender(rollingAppender);
var memoryAppender = GetMemoryAppender(repositoryName);
hierarchy.Root.AddAppender(memoryAppender);
BasicConfigurator.Configure(repository);
}
//Returns a logger from a particular repository;
//Logger with same name but different repository will log using different appenders
return LogManager.GetLogger(repositoryName, name);
}
#endregion
#region Private Methods
private static IAppender GetRollingAppender(string arg)
{
var level = Level.All;
var rollingFileAppenderLayout = new PatternLayout("%date{HH:mm:ss,fff}|T%2thread|%25.25logger|%5.5level| %message%newline");
rollingFileAppenderLayout.ActivateOptions();
var rollingFileAppenderName = string.Format("{0}{1}", RollingFileAppenderNameDefault, arg);
var rollingFileAppender = new RollingFileAppender();
rollingFileAppender.Name = rollingFileAppenderName;
rollingFileAppender.Threshold = level;
rollingFileAppender.CountDirection = 0;
rollingFileAppender.AppendToFile = true;
rollingFileAppender.LockingModel = new FileAppender.MinimalLock();
rollingFileAppender.StaticLogFileName = true;
rollingFileAppender.RollingStyle = RollingFileAppender.RollingMode.Date;
rollingFileAppender.DatePattern = ".yyyy-MM-dd'.log'";
rollingFileAppender.Layout = rollingFileAppenderLayout;
rollingFileAppender.File = string.Format("{0}.{1}", "log", arg);
rollingFileAppender.ActivateOptions();
return rollingFileAppender;
}
private static IAppender GetMemoryAppender(string station)
{
//MemoryAppender
var memoryAppenderLayout = new PatternLayout("%date{HH:MM:ss} | %message%newline");
memoryAppenderLayout.ActivateOptions();
var memoryAppenderWithEventsName = string.Format("{0}{1}", MemoryAppenderNameDefault, station);
var levelRangeFilter = new LevelRangeFilter();
levelRangeFilter.LevelMax = Level.Fatal;
levelRangeFilter.LevelMin = Level.Info;
var memoryAppenderWithEvents = new MemoryAppenderWithEvents();
memoryAppenderWithEvents.Name = memoryAppenderWithEventsName;
memoryAppenderWithEvents.AddFilter(levelRangeFilter);
memoryAppenderWithEvents.Layout = memoryAppenderLayout;
memoryAppenderWithEvents.ActivateOptions();
return memoryAppenderWithEvents;
}
#endregion
}
}
用法:
var arg = "myArg";
var loggerName = "MyLogger";
var log = LogMaster.GetLogger(arg, loggerName);
使用此解决方案，您可以从默认的LogManager行为检索ILog记录器中受益:如果存储库中已经存在具有相同名称的记录器，您将获得该距离(回收行为).
Using this solution you can benefit from default LogManager behavior retrieving ILog loggers: if a logger with the same name already exists in a repository, you will get back that istance (recycling behavior).
谢谢@ making3的建议！
Thank you @making3 for your suggestions!
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