WCF日志记录生成多个svc文件

Question

I have a simple WCF service library called HelloService which is hosted in WCF Service application.

My service is hosted in remote IIS server. Below is my service configuration for logging.

<system.diagnostics>
<sources>
  <source propagateActivity="true" name="System.ServiceModel" switchValue="Error,ActivityTracing">
    <listeners>
      <add name="xml">
        <filter type="" />
      </add>
    </listeners>
  </source>
  <source name="System.ServiceModel.MessageLogging" switchValue="Error">
    <listeners>
      <add name="xml">
        <filter type="" />
      </add>
    </listeners>
  </source>
  <source name="myUserTraceSource" switchValue="Error,ActivityTracing">
    <listeners>
      <add name="xml">
        <filter type="" />
      </add>
    </listeners>
  </source>
</sources>
<sharedListeners>
  <add initializeData="D:\HelloService\HelloServiceLogs.svclog"
    type="System.Diagnostics.XmlWriterTraceListener" name="xml"
    traceOutputOptions="Timestamp">
    <filter type="" />
  </add>
</sharedListeners></system.diagnostics>

When I call this service, sometimes it logs in existing file and sometimes it creates new file.

My questions are.

1) Why does it produces so many log files? How to write all logs in one file called.

2) How can I only log all unhandled exception?

Answer 1

1) You can configure the size of messages using a configuration like this:

<system.serviceModel>
  <diagnostics>
    <messageLogging 
         logEntireMessage="true" 
         logMalformedMessages="false"
         logMessagesAtServiceLevel="true" 
         logMessagesAtTransportLevel="false"
         maxMessagesToLog="3000"
         maxSizeOfMessageToLog="2000"/>
  </diagnostics>
</system.serviceModel>

Read more here: https://msdn.microsoft.com/en-us/library/ms730064%28v=vs.110%29.aspx

2) You can setup the level of logging, like this (error only in the example below):

<source propagateActivity="false" name="System.ServiceModel" switchValue="Error">

Hope it helps.