Sample express app with pprof endpoint instrumentation using Pyroscope

index.js

const express = require('express')
const app = express()
const port = 3002

const Pyroscope= require('@pyroscope/nodejs');

Pyroscope.init({ tags: { region: 'us-east-1' } })

app.use(Pyroscope.expressMiddleware())

app.get('/', (req, res) => {
  res.send('Hello World!')
})


app.get('/primes', (req, res) => {
    let to = req.query.to ? Number(req.query.to) : 100;
    res.send(prime_number_from_1_to(to))
  })

app.listen(port, () => {
  console.log(`Example app listening on port ${port}`)
})


function divisible(i, j){
    return i % j == 0
}
function prime_number_from_1_to(to=100){
    let prime_numbers = []
    for (let i=1; i<to; i++) {
        if (i > 1) {
            let not_div = true;
            for (let j=2; j<i; j++) {
                if (divisible(i, j)){
                    not_div = false;
                    break;
                }      
            }
            if (not_div) {
                prime_numbers.push(i)
            } 
        }   
    }
    return prime_numbers
}