webhook.js

var http = require('http');
var createHandler = require('github-webhook-handler');
var bl = require('bl');
var shell = require('shelljs');

var PUBLISH_TAG_REG = /^refs\/tags\/(publish.*)$/i;

module.exports = function (options) {
    http.createServer(function (req, res) {
        req.pipe(bl(function (err, data) {
            if (err) {
                console.log('error', err);
                res.writeHead(400, { 'content-type': 'application/json' });
                res.end(JSON.stringify({ error: 'error' }));
                return;
            }
            data = JSON.parse(data);
            if (PUBLISH_TAG_REG.test(data.ref)) {
                options.publish(RegExp.$1);
            }
            res.writeHead(200, { 'content-type': 'application/json' });
            res.end('{"ok":true}');
        }));
    }).listen(7777);

    console.log('webhook start at 7777');
};

module.exports({
    publish: function (tag) {
        console.log('tag is', tag);
        shell.exec([
            'git pull origin ' + tag,
            'git tag'
        ]);
    }
});