Azure Application Insights for web pages

Add Azure Application Insights tracking to a Shiny App. Requires an active Azure subscription and Application Insights instrumentation key! Based on https://docs.microsoft.com/en-us/azure/azure-monitor/app/javascript and https://github.com/microsoft/ApplicationInsights-JS.

Supports so far only pageViews (automatically sent), autoTrackPageVisitTime (when configured), and customEvents.

customMetrics will still not go through.

Notes:

New Azure regions do not support instrumentation keys. Instead, a connection string must be supplied (which includes the instrumentation key).

Usage:

1. Include includeAzureAppInsights() in your ui-function. Anywhere will do.
2. Include startAzureAppInsights(session, config(connectionString = <>, appId = <>)) in your server-function.

To submit a custom event from the server-side use trackEvent. You can also use to submit directly from the browser.

tags$button("Click me!",
      onClick=HTML("appInsights.trackEvent( {name: 'garble', properties: {moobs: 15, bacon: true}});" )
    )