How to Ignore localhost on Azure application insights

Question

I started hosting my first production application recently. I went ahead and activated application insights, which I think have a lot of value. However, I'm getting stats which come from the developer side, for example logs are recording entries from localhost:xxxx. I'm sure there is a way to turn this off. Can anyone give me some pointers please?

Answer 1

You can also filter localhost telemetry using TelemetryProcessor (if you are using the latest (prerelease version of Application Insights Web SDK). Here's an example. Add this class to your project:

public class LocalHostTelemetryFilter : ITelemetryProcessor
{
    private ITelemetryProcessor next;
    public LocalHostTelemetryFilter(ITelemetryProcessor next)
    {
        this.next = next;
    }

    public void Process(ITelemetry item)
    {
        var requestTelemetry = item as RequestTelemetry;
        if (requestTelemetry != null && requestTelemetry.Url.Host.Equals("localhost", StringComparer.OrdinalIgnoreCase))
        {
            return;
        }
        else
        {
            this.next.Process(item);
        }   
    }
}

And then register it in ApplicationInsights.config:

<TelemetryProcessors>
    <Add Type="LocalhostFilterSample.LocalHostTelemetryFilter, LocalHostFilterSample"/>
</TelemetryProcessors>