Question

在某些机器上（可能仅在Windows 7和2008 R2上，但在Windows 10上），我在使用SemanticLogging时遇到问题。当我运行它时，我接收到了输出：

Event Trace Session prefix: Microsoft-SemanticLogging-Etw

Sink name: ConsoleEventSink
Event sources:
Name: 8943bf09-be18-551a-efe5-612ee62ded5e
Performance, Level: LogAlways, MatchAnyKeyword: None

Sink name: PerformaceSINK
Event sources:
Name: 8943bf09-be18-551a-efe5-612ee62ded5e
Performance, Level: LogAlways, MatchAnyKeyword: None

Service started.

Press enter to end ...
ERROR: Exception in Command Processing for EventSource Performance: Object
reference not set to an instance of an object.;

特定场景中发生的一切：

我正在启动写入事件的过程
然后我运行SemanticLogging-svc.exe -c
片刻之后发生错误

但是，当我更改订单并首先启动SemanticLogging-svc.exe之后，我会运行＆＃34; event writer＆＃34;，一切都会如此。

但是当我按照第一个场景中的描述设置所有内容时，我会尝试使用PerfView收集数据，并且SemanticLogging开始收集数据。

使用PerfView我检查了Microsoft-SemanticLogging-Etw来源，但没有。

SemanticLogging-svc.config ：

<?xml version="1.0" encoding="utf-8" ?>
<configuration xmlns="http://schemas.microsoft.com/practices/2013/entlib/semanticlogging/etw"
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation="http://schemas.microsoft.com/practices/2013/entlib/semanticlogging/etw SemanticLogging-svc.xsd">
  <traceEventService />
  <sinks>
    <consoleSink name="ConsoleEventSink">
      <sources>
        <eventSource name="PerformanceEventSource" level="LogAlways" />
      </sources>
      <customEventTextFormatter type="ServiceTelemetry.EventFormatter.CsvEventFormatter, ServiceTelemetry"/>
    </consoleSink>
    <rollingFlatFileSink
      name="PerformanceEventSourceSINK"
      fileName=".\logs\%ComputerName%_Performance.log"
      rollFileExistsBehavior="Increment"
      rollInterval="Midnight"
      timeStampPattern="yyyyMMdd">
      <sources>
        <eventSource name="PerformanceEventSource" level="LogAlways" />
      </sources>
      <customEventTextFormatter type="ServiceTelemetry.EventFormatter.CsvEventFormatter, ServiceTelemetry"/>
    </rollingFlatFileSink>
   </sinks>
</configuration>

EventFormatter ：

namespace ServiceTelemetry.EventFormatter
{
    public class CsvEventFormatter : IEventTextFormatter
    {
        public void WriteEvent(EventEntry eventEntry, TextWriter writer)
        {
            StringBuilder sb = new StringBuilder();

            for (int i = 0; i < eventEntry.Payload.Count; i++)
            {
                sb.AppendFormat("{0};", eventEntry.Payload[i]);
            }
            writer.WriteLine(sb.ToString());
        }

    }
}

的EventSource ：

namespace ServiceTelemetry.EventSources
{
    [EventSource(Name = "Performance")]
    public sealed class PerformanceEventSource : EventSource
    {
        [Event(1, Level = EventLevel.LogAlways, Task = TaskCodes.GetResource, Opcode = OperationCodes.Compleated)]
        public void GetResourceSuccess(string Session, string ResourceName, long ElapsedMilliseconds)
        {
            if (IsEnabled())
            {
                WriteEvent(1, Session, ResourceName, ElapsedMilliseconds);
            }
        }

        public static PerformanceEventSource Log = new PerformanceEventSource();

        private PerformanceEventSource()
        {

        }
    }
}

Answer 1

首先需要安装清单，然后您可以启动EventWriter，并且可以在任何时候启动SematicLogger时收集数据。不幸的是系统会抛出错误但是现在我很擅长。

EventSource .net 4.0 GenerateManifest

SemanticLogging在EventSource的命令处理中抛出异常

1 个答案: