const http = require('http'); var nCpi = 100; var map = []; var timestamp = []; var delay = []; var doppler = []; var detection = ''; var ts = ''; var output = []; const options_timestamp = { host: '127.0.0.1', path: '/api/timestamp', port: 3000 }; const options_detection = { host: '127.0.0.1', path: '/api/detection', port: 3000 }; function update_data() { // check if timestamp is updated http.get(options_timestamp, function(res) { res.setEncoding('utf8'); res.on('data', function (body) { if (ts != body) { ts = body; http.get(options_detection, function(res) { let body_map = ''; res.setEncoding('utf8'); res.on('data', (chunk) => { body_map += chunk; }); res.on('end', () => { try { detection = JSON.parse(body_map); map.push(detection); if (map.length > nCpi) { map.shift(); } delay = []; doppler = []; timestamp = []; for (var i = 0; i < map.length; i++) { for (var j = 0; j < map[i].delay.length; j++) { delay.push(map[i].delay[j]); doppler.push(map[i].doppler[j]); timestamp.push(map[i].timestamp); } } output = { timestamp: timestamp, delay: delay, doppler: doppler }; } catch (e) { console.error(e.message); } }); }); } }); }); }; setInterval(update_data, 100); function get_data() { return output; }; module.exports.get_data_detection = get_data;