Serilog - 多个日志文件 [英] Serilog - multiple log files

问题描述

我正在使用 Serilog 进行日志记录，但无法弄清楚如何将日志事件分隔到不同的文件.例如，我想将错误记录到 error_log-ddmmyyyy.txt 并将警告记录到 warn_log-ddmmyyyy.txt.

I am using Serilog for logging and cant' figure out how to separate log events to different files. For example, I want to log errors to error_log-ddmmyyyy.txt and warnings to warn_log-ddmmyyyy.txt.

这是我的记录器配置:

Log.Logger = new LoggerConfiguration()
            .WriteTo.Logger(lc =>
                lc.Filter.ByIncludingOnly(Matching.WithProperty("Level", "Warning"))
                    .WriteTo.RollingFile(
                        Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"Logswarn_log-{Date}.txt"),
                        outputTemplate: OutputTemplate))
            .WriteTo.Logger(lc =>
                lc.Filter.ByIncludingOnly(Matching.WithProperty("Level", "Error"))
                    .WriteTo.RollingFile(
                        Path.Combine(AppDomain.CurrentDomain.BaseDirectory, @"Logserror_log-{Date}.txt"),
                        outputTemplate: OutputTemplate))
            .CreateLogger();

仅当我在日志消息中指定 {Level} 属性时才有效.

It only works when I specify {Level} property exatcly in log message.

我正在尝试使用:

Matching.WithProperty<LogEventLevel>("Level", l => l == LogEventLevel.Warning)

但它也不起作用.

推荐答案

我认为您需要:

.ByIncludingOnly(evt => evt.Level == LogEventLevel.Warning)

在许多情况下，现在使用 Serilog.Sinks.Map.有了它，例子可以写成:

In many cases it's now more succinct to use Serilog.Sinks.Map. With it, the example can be written as:

Log.Logger = new LoggerConfiuration()
    .WriteTo.Map(
        evt => evt.Level,
        (level, wt) => wt.RollingFile("Logs\" + level + "-{Date}.log"))
    .CreateLogger();

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