Statistics Export via POST

The Statistics Export allows querying the API of the Allegro Network Multimeter and transmit JSON results to a remote server via HTTP POST requests. The API path can be determined by using a browser debug console on any of the modules of the Allegro Network Multimeter.

The configuration can be found in the menu "Settings -> Remote access & export -> Statistics export".

Example:

• Interval: 60
• Internal URL Path: /API/stats/interfaces
• External POST target: http://10.0.0.1:3000/interface-stats-for-mm-1234

This will generate a POST /interface-stats-for-mm-1234 request to 10.0.0.1 every minute and send the interface statistics of the Allegro Network Multimeter.

Example receiving server

To test the correct setup, a simple example server using Node.js can be used to receive the POST requests and show the transmitted data.

The following script is a basic Node.js server (with minimal error handling) which reads all POST requests and stores them to a file:

const http = require('http');
const fs = require('fs');

const listenAddress = '0.0.0.0';
const port = 3000;

let fileCount = 1;

const server = http.createServer((req, res) => {

  if (req.method != 'POST') {
        res.statusCode = 405;
        res.end();
        return;
  }

  let id = fileCount++;

  let outputFilename = `${req.url.substring(1).replace(/\//g, '_')}_${id}.json`;

  console.log(`${id}: ${req.method} ${req.url} => ${outputFilename}`);

  let dataChunks = [];

  req.on('data', chunk => dataChunks.push(chunk));

  req.on('end', () => {
        let data = Buffer.concat(dataChunks);
        fs.writeFile(outputFilename, data, (err) => {
            if (err != null) {
                 console.log(err);
                 res.statusCode = 500;
            } else {
                 res.statusCode = 200;
            }
            res.end();
        });
  });
});

server.listen(port, listenAddress, () => {
  console.log(`Server running at http://${listenAddress}:${port}/`);
});