How to process tracked information in Application Insights

Question

I am using Application Insights to track events in my web pages:

appInsights.trackEvent("my-event", { test: true });

However I can see that each entry in the log, collects some info regarding several other things like:

• User Id
• Session Id
• Operation name

The last one is sensitive as I can get the name of the computer or some other stuff. In order to comply to the GDPR, I wanna strip out those info from my log.

How do I tell Application Insights, to process the data before logging them? In my case, I would like to get access to the object which will be sent out by trackEvent and modify it before it is transmitted.

Answer 1

You can use TelemetryInitializers for that. They allow you to modify items before they are send to Application Insights

In your case it could be as simple as

appInsights.queue.push(function () {
    appInsights.context.addTelemetryInitializer(function (envelope) {
        envelope.tags['ai.operation.name'] = 'xxx';
});