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node.jsexpressazure-application-insights

Application Insights with Node.js / Express

I've a growing collection of Node.js Express services each has a health check endpoint that is pinged every few seconds.

I've added Azure App Insights and thats capturing data as expected for every request.

My problem is I need to only send/collect data from specific endpoints and for specific actions not every single request. So i really just need to have a single instance of the default client and use that wherever I need to.

Inside my app.ts file I have something like this:

import appInsights from "applicationinsights";
.
..
...
appInsights
    .setup(<my app insights key>)
    .start();
.
..
...
const client = appInsights.defaultClient;

Any advice or good quality examples?

Solution

  • If you're using expressjs, you could just create a separate Middleware that contains the appInsights. Then add that middleware to the routes you want to track.

    i.e.: app.use('/myroute',appInsightMiddleware, routes)