prometheus_mock.js

const express = require('express');
const cors = require('cors');
const faker = require('faker');

const app = express();

const data = [];

for (let i = 0; i < 200000; i++) {
  let firstName = faker.name.firstName();
  let lastName = faker.name.lastName();
  data.push(`${firstName}_${lastName}_${firstName}_${lastName}`);
}
const PORT = process.env.PORT || 1111;
app.use(cors());
app.get('/api/v1/label/__name__/values', (req, res) => {
  res.status(200).json({
    status: 'success',
    data,
  });
});

app.listen(PORT, () => console.log(`App listening at http://localhost:${PORT}`));