CODEWITHSUNDEEP
serilog
LP13
LP13

Reputation: 34119

Serilog's enricher does not log properties

I have ASP.NET MVC application and im using Serilog for logging purpose. I have implemented serilog's enricher to log user's username for every log entry

public class HttpContextEnricher : ILogEventEnricher
{
    LogEventProperty _cachedProperty;

    public const string EnvironmentUserNamePropertyName = "MyUserName";

    public void Enrich(LogEvent logEvent, ILogEventPropertyFactory propertyFactory)
    {
        if (HttpContext.Current == null)
            return;
        if (HttpContext.Current.User == null)
            return;
        if (HttpContext.Current.User.Identity == null)
            return;

        _cachedProperty = _cachedProperty ?? propertyFactory.CreateProperty(EnvironmentUserNamePropertyName, HttpContext.Current.User.Identity.Name);
        logEvent.AddPropertyIfAbsent(_cachedProperty);
    }
}

Extension Method

public static class HttpContextLoggerConfigurationExtensions
{
    public static LoggerConfiguration WithUserName(
        this LoggerEnrichmentConfiguration enrichmentConfiguration)
    {
        if (enrichmentConfiguration == null) throw new ArgumentNullException(nameof(enrichmentConfiguration));
        return enrichmentConfiguration.With<HttpContextEnricher>();
    }
}

Configured it at application start

     Log.Logger = new LoggerConfiguration()
            .Enrich.WithUserName()                       
            .ReadFrom.AppSettings()
            .CreateLogger();

Here is my app settings

<add key="serilog:minimum-level" value="Information" />
<add key="serilog:using:EventLog" value="Serilog.Sinks.EventLog" />
<add key="serilog:write-to:EventLog" />
<add key="serilog:write-to:EventLog.source" value="MySource" />
<add key="serilog:write-to:EventLog.manageEventSource" value="false" />

This is how i am logging

Log.Information("Some information messaage");

I am using WindowsEvent Sink. When i execute the application i see the message is getting logged in the windows's event source, however the log does not have MyUserName property.

I am not sure what i am missing here?

Upvotes: 1

Views: 3207

Answers (1)

LP13
LP13

Reputation: 34119

I had to explicitly set UserName in outputTemplate so that it can write to sink.

<add key="serilog:write-to:EventLog.outputTemplate" value="[{Level}]{NewLine}{Timestamp:MM/dd/yyyy HH:mm:ss tt}{NewLine}UserName:{MyUserName}{NewLine}Message:{Message}{NewLine}{Exception}" />

Upvotes: 2

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