企业库 Fluent API 和滚动日志文件不滚动

Question

我正在使用 Fluent API 来处理使用 EntLib 进行日志记录的各种配置选项。

我正在代码中手动构建 loggingConfiguration 部分。除了 RollingFlatFileTraceListener 实际上并没有滚动文件之外，它似乎工作得很好。它将遵守大小限制并适当限制写入文件的数据量，但实际上并不会创建新文件并继续记录日志。

我已经使用示例应用程序和 app.config 对其进行了测试，它似乎可以正常工作。所以我猜我错过了一些东西，尽管每个配置选项似乎都在那里。

以下是代码的基础知识（使用硬编码值来显示似乎不起作用的配置）： //为 Fluent API 创建配置构建器 var configBuilder = new ConfigurationSourceBuilder();

            //Start building the logging config section                 
            var logginConfigurationSection = new LoggingSettings("loggingConfiguration", true, "General");                 
            logginConfigurationSection.RevertImpersonation = false;
            var _rollingFileListener = new RollingFlatFileTraceListenerData("Rolling Flat File Trace Listener", "C:\\tracelog.log", "----------------------", "",
                            10, "MM/dd/yyyy", RollFileExistsBehavior.Increment,
                            RollInterval.Day, TraceOptions.None,
                            "Text Formatter", SourceLevels.All);


            _rollingFileListener.MaxArchivedFiles = 2;

            //Add trace listener to current config
            logginConfigurationSection.TraceListeners.Add(_rollingFileListener);

            //Configure the category source section of config for flat file
            var _rollingFileCategorySource = new TraceSourceData("General", SourceLevels.All);

            //Must be named exactly the same as the flat file trace listener above.
            _rollingFileCategorySource.TraceListeners.Add(new TraceListenerReferenceData("Rolling Flat File Trace Listener"));

            //Add category source information to current config
            logginConfigurationSection.TraceSources.Add(_rollingFileCategorySource);          

            //Add the loggingConfiguration section to the config.
            configBuilder.AddSection("loggingConfiguration", logginConfigurationSection);

            //Required code to update the EntLib Configuration with settings set above.
            var configSource = new DictionaryConfigurationSource();
            configBuilder.UpdateConfigurationWithReplace(configSource);

            //Set the Enterprise Library Container for the inner workings of EntLib to use when logging
            EnterpriseLibraryContainer.Current = EnterpriseLibraryContainer.CreateDefaultContainer(configSource);

任何帮助将不胜感激！

Answer 1

您的时间戳模式错误。它应该是 yyy-mm-dd 而不是 MM/dd/yyyy。不支持“/”字符。

此外，您可以通过使用fluent configuration interface 更轻松地实现您的目标。方法如下：

    ConfigurationSourceBuilder formatBuilder = new ConfigurationSourceBuilder();

    ConfigurationSourceBuilder builder = new ConfigurationSourceBuilder();
    builder.ConfigureLogging().LogToCategoryNamed("General").
        SendTo.
        RollingFile("Rolling Flat File Trace Listener")
        .CleanUpArchivedFilesWhenMoreThan(2).WhenRollFileExists(RollFileExistsBehavior.Increment)
        .WithTraceOptions(TraceOptions.None)
        .RollEvery(RollInterval.Minute)
        .RollAfterSize(10)
        .UseTimeStampPattern("yyyy-MM-dd")
        .ToFile("C:\\logs\\Trace.log")
        .FormatWith(new FormatterBuilder().TextFormatterNamed("textFormatter"));

    var configSource = new DictionaryConfigurationSource(); 
    builder.UpdateConfigurationWithReplace(configSource); 
    EnterpriseLibraryContainer.Current = EnterpriseLibraryContainer.CreateDefaultContainer(configSource);
    var writer = EnterpriseLibraryContainer.Current.GetInstance<LogWriter>();

    DateTime stopWritingTime = DateTime.Now.AddMinutes(10);
    while (DateTime.Now < stopWritingTime)
    {
        writer.Write("test", "General");
    }