我希望能够通过Hangfires context.console使用我的日志发送事件,这样我就不需要使用context.writeline将日志事件输出到我的hangfire仪表板。
我试图为此目的实施一个特定的serilog接收器。但是由于我需要来自hangfire的PerformContext(在运行时注入任务方法),我无法在应用程序启动时配置日志接收器。我试图在任务方法中创建一个新的记录器,只是为了看看接收器是否真的有效,但它没有 - 任何人都可以看到它为什么不起作用,或者可能建议采用不同的方法?
这是水槽:
public static class SinkExtensions {
public static LoggerConfiguration HangfireContextSink(this LoggerSinkConfiguration loggerSinkConfiguration, PerformContext context, IFormatProvider formatProvider = null) {
return loggerSinkConfiguration.Sink(new HangfireContextSink(formatProvider, context));
}
}
接收器配置:
public static bool TestJob(PerformContext context) {
using (LogContext.PushProperty("Hangfirejob", "TestJob")) {
try {
using (var hangfireLog = new LoggerConfiguration().WriteTo.HangfireContextSink(context).CreateLogger()) {
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");
return true;
} catch (Exception ex) {
Log.Error(ex, "Error!");
return false;
}
}
}
任务方法:
join
答案 0 :(得分:8)
消息未记录到Hangfire控制台,因为您使用Information
日志级别记录消息,而默认的Serilog级别为.MinimumLevel.Debug()
。您可以在LoggerConfiguration
上调用Serilog.Log
来更改日志记录级别。另外,对于通过Logger
静态类记录消息,您应该设置其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;
}
}
属性。
这是一个将登录到Hangfire控制台的固定代码:
PerformContext
这将有效,但是为每个作业创建新日志的整体方法非常糟糕。您可以通过将LogEvent
的实例传递到LogEventPropertyValue
中的属性来避免这种情况。您应该定义一个派生自抽象PerformContext
的自定义属性类,并公开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)
{
}
}
的实例。
以下是最终代码:
<强> PerformContextProperty.cs:强>
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)));
}
}
<强> PerformContextEnricher.cs:强>
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;
}
}
}
}
<强> TestJob.cs:强>
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);
}
}
}
<强> HangfireContextSink.cs:强>
public static class SinkExtensions
{
public static LoggerConfiguration HangfireContextSink(this LoggerSinkConfiguration loggerSinkConfiguration, IFormatProvider formatProvider = null)
{
return loggerSinkConfiguration.Sink(new HangfireContextSink(formatProvider));
}
}
<强> SinkExtensions.cs:强>
Log.Logger = new LoggerConfiguration()
.Enrich.FromLogContext()
.MinimumLevel.Debug()
.WriteTo.HangfireContextSink()
.CreateLogger();
Serilog配置:
.Enrich.FromLogContext()
在Serilog配置中,请勿忘记致电LogContext
,以便使用{{1}}中的属性丰富日志事件。
以上代码非常简单,这就是我没有详细评论的原因。如果您对代码有疑问,请询问,我会尝试解释不清楚的时刻。