webhook

webhook.js

const secret = "very_secret_key";
const repo = "/var/www/example.com";

const http = require('http');
const crypto = require('crypto');
const exec = require('child_process').exec;

const BUILD_CMD = 'npm install && NODE_ENV=production npm run build';
const PM2_CMD = 'pm2 restart <NODE APP NAME>';

http.createServer(function (req, res) {
    req.on('data', function(chunk) {
        let sig = "sha1=" + crypto.createHmac('sha1', secret).update(chunk.toString()).digest('hex');

        if (req.headers['x-hub-signature'] == sig) {
            exec('cd ' + repo + ` && git pull && npm install && ${BUILD_CMD} && ${PM2_CMD}`);
        }
    });

    res.end();
}).listen(8200);