Serilog输出到hangfire上下文控制台

消息不会记录到Hangfire控制台,因为您使用 Debug 日志级别,而默认Serilog级别为 Information 。您可以通过调用更改日志记录级别 .MinimumLevel.Debug() 在…上 LoggerConfiguration 。还用于通过以下方式记录消息 Serilog.Log 静态类,您应该设置 Logger 所有物

以下是将登录到Hangfire控制台的固定代码:

using (LogContext.PushProperty("Hangfirejob", "TestJob"))
{
    try
    {
        using (var hangfireLog = new LoggerConfiguration().MinimumLevel.Debug().WriteTo.HangfireContextSink(context).CreateLogger())
        {
            //  This is a dirty code that will be removed in final solution
            var prevLogger = Log.Logger;
            Log.Logger = hangfireLog;

            var progress = context.WriteProgressBar("Progress");
            for (int i = 0; i < 10; i++)
            {
                context.WriteLine("Working with {0}", i);
                progress.SetValue((i + 1) * 10);
                Log.Debug("Test serilog");
                hangfireLog.Debug("Test from hangfirelog");
                Thread.Sleep(5000);
            }
            Log.Debug("Done testjob");
            Log.Logger = prevLogger;
        }
        return true;
    }
    catch (Exception ex)
    {
        Log.Error(ex, "Error!");
        return false;
    }
}

这将起作用,但为每个作业创建新日志的总体方法非常糟糕。您可以通过传递 PerformContext 通过中的属性 LogEvent 。您应该定义从抽象 LogEventPropertyValue 并公开 PerformContext 。

以下是最终代码:

PerformContextProperty。cs:

public class PerformContextProperty : LogEventPropertyValue
{
    public PerformContext PerformContext { get; }

    public PerformContextProperty(PerformContext performContext)
    {
        PerformContext = performContext;
    }

    public override void Render(TextWriter output, string format = null, IFormatProvider formatProvider = null)
    {
    }
}

PerformContextEnricher。cs:

public class PerformContextEnricher : ILogEventEnricher
{
    private readonly PerformContext performContext;

    public PerformContextEnricher(PerformContext performContext)
    {
        this.performContext = performContext;
    }

    public void Enrich(LogEvent logEvent, ILogEventPropertyFactory propertyFactory)
    {
        logEvent.AddPropertyIfAbsent(new LogEventProperty(HangfireContextSink.PerformContextProperty, new PerformContextProperty(performContext)));
    }
}

测试作业。cs:

public class TestJob
{
    public static bool Execute(PerformContext context)
    {
        using (LogContext.PushProperty("Hangfirejob", "TestJob"))
        using (LogContext.Push(new PerformContextEnricher(context)))
        {
            try
            {
                var progress = context.WriteProgressBar("Progress");
                for (int i = 0; i < 10; i++)
                {
                    context.WriteLine("Working with {0}", i);
                    progress.SetValue((i + 1) * 10);
                    Log.Debug("Test serilog", context);
                    Log.Debug("Test from hangfirelog");
                    Thread.Sleep(5000);
                }
                Log.Debug("Done testjob");
                return true;
            }
            catch (Exception ex)
            {
                Log.Error(ex, "Error!");
                return false;
            }
        }
    }
}

HangfireContextSink。cs:

class HangfireContextSink : ILogEventSink
{
    public const string PerformContextProperty = "PerformContext";

    private readonly IFormatProvider formatProvider;

    public HangfireContextSink(IFormatProvider formatProvider)
    {
        this.formatProvider = formatProvider;
    }

    public void Emit(LogEvent logEvent)
    {
        var message = logEvent.RenderMessage(formatProvider);

        LogEventPropertyValue propertyValue;
        if (logEvent.Properties.TryGetValue(PerformContextProperty, out propertyValue))
        {
            var context = (propertyValue as PerformContextProperty)?.PerformContext;
            context?.WriteLine(ConsoleTextColor.Green, DateTimeOffset.Now + " " + message);
        }
    }
}

下沉延伸。cs:

public static class SinkExtensions
{
    public static LoggerConfiguration HangfireContextSink(this LoggerSinkConfiguration loggerSinkConfiguration, IFormatProvider formatProvider = null)
    {
        return loggerSinkConfiguration.Sink(new HangfireContextSink(formatProvider));
    }
}

Serilog配置:

Log.Logger = new LoggerConfiguration()
    .Enrich.FromLogContext()
    .MinimumLevel.Debug()
    .WriteTo.HangfireContextSink()
    .CreateLogger();

在Serilog配置中,不要忘记调用 .Enrich.FromLogContext() 这样,日志事件就可以通过 LogContext 。

上面的代码非常简单,这就是为什么我不详细注释它的原因。如果您对代码有一些问题,请提问,我将尝试解释不清楚的时刻。