Bulk delete Auth0 users

delete.js

#!/usr/bin/env node

/*
 * Install dependencies with:
 *     npm install request request-promise-native bottleneck
 *
 * Replace YOUR_TENANT_NAME, MGMT_TOKEN, and FILENAME
 * The input file (FILENAME) should contain a list of user ids to delete, separated by newlines
 */

const fs = require('fs')
const rp = require('request-promise-native')
const Bottleneck = require('bottleneck')

const AUTH0_DOMAIN = 'https://{{YOUR_TENANT_NAME}}.auth0.com'
const MGMT_TOKEN = '{{MGMT_TOKEN}}'
const FILENAME = '{{FILENAME}}'

const rateLimit = (fn, num, time) => {
  // as recommended by Bottleneck author
  // https://github.com/SGrondin/bottleneck/issues/9

  const limiter = new Bottleneck(0, 0)

  limiter.changeReservoir(num)

  setInterval(function() {
    limiter.changeReservoir(num)
  }, time)

  return function rateLimitedFunction() {
    const args = Array.from(arguments);
    return limiter.schedule(fn, ...args)
  }
}

let x = 1
let total = 0

const deleteUser = async id => {
  console.log(`${x++}/${total}`)
  const opts = {
    url: `${AUTH0_DOMAIN}/api/v2/users/${id}`,
    method: 'DELETE',
    headers: {
      Authorization: `Bearer ${MGMT_TOKEN}`
    }
  }
  try {
    const res = await rp(opts)
  } catch (e) {
    console.log(`Failed to delete user ${id}`)
    console.log(e.message)
  }
}

// Tested with 3500 users without an issue (takes about 2 mins 30 seconds)
// 20 is calls per second. Noticed that increasing the amount to 40, 50 etc throws 429s after a while,
// even though 50 per second is supported.
const deleteRateLimited = rateLimit(deleteUser, 20, 1000)

const deleteAll = async () => {
  const ids = fs.readFileSync(FILENAME, 'utf8').split('\n').filter(u => !!u)
  total = ids.length

  ids.forEach(id => deleteRateLimited(id))
}

deleteAll()