Example webhook for processing on-push updates from GitHub in Node.js

github_webook.js

//github.com/realSaddy
// This uses pm2 by default, feel free to change any of the pipeline commands
const secret = "";
const repo = "/location";
const branch = "master"
const pipeline = [
    'pm2 stop server',
    'cd ' + repo + ' && git pull origin master',
    `cd `+repo+` && npm install`,
    `cd `+repo+` && pm2 restart server`
]

const http = require("http");
const crypto = require("crypto");
const execa = require('execa');
const {signer} = require("x-hub-signature");

http.createServer(function (req, res) {
    var body = "";
    var sig = ""
    req.on('data', function(chunk) {
        console.log("data retrieved")
        body += chunk;
        sig = 'sha1=' + crypto.createHmac('sha1', secret).update(chunk).digest('hex')
    }).on("end", async function(){
        try {
            console.log("Request Recieved!")
            let json = JSON.parse(body)
            if (req.headers['x-hub-signature'] == sig && json["ref"] == "refs/heads/"+branch) {
                    console.log("Updating Repo "+repo)
for (let i = 0; i < pipeline.length; i++){

                        const {stdout,stderr} = await execa.shell(pipeline[i])
                        console.log(pipeline[i]+` stdout: `+stdout)
                        console.log(pipeline[i]+` stderr: `+stderr)

                    }
            } else {console.log("Secret incorrect");}
        } catch(err) {
            console.error("Error: "+err);
        }
    })
    res.end();
}).listen(8009);

console.log("on");