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node.js, selenium grid, xvfb, and webdriver.io
node.js, selenium grid, xvfb, and webdriver.io
var async = require('async');
var selenium = require('selenium-standalone');
var Xvfb = require('xvfb');
var xvfb = new Xvfb({
displayNum: 99,
reuse: true,
xvfb_args: ['-screen', '0', '2880x1800x24']
});
exports.boot = function (finished) {
async.waterfall([
// 1st. Start Xvfb
function (done) {
xvfb.start(function(err){
return done(err);
});
},
// 2nd. Install Selenium
function (done) {
selenium.children = [];
selenium.install({
logger: function (message) {
console.log('Selenium install:', message);
}
}, function(err){
return done(err);
});
},
// 3rd. Start Selenium Grid
function (done) {
startSelenium(selenium, ['-role', 'hub', '-timeout', '100'], done);
},
// 4th. Start Selenium Nodes
function (selenium, done) {
// Ideal amount of Selenium Grid nodes on an Amazon m3.large instance
var maxNodes = 6;
async.times(maxNodes, function(n, next){
var args = ['-role', 'node', '-hub', 'http://localhost:4444/grid/register', '-maxSession', '1'];
var port = '555' + n;
args.push('-port');
args.push(port);
startSelenium(selenium, args, next);
}, function(){
return done(null, selenium);
});
}
], function (err) {
if (err) {
console.log('Selenium startup error:', err);
}
else {
console.log('Selenium listening!');
}
if (finished) {
return finished();
}
});
};
function startSelenium(selenium, args, started) {
selenium.start({
seleniumArgs: args
}, function (err, child) {
if (err) {
return started(err);
}
child.stderr.on('data', function(data){
console.log(data.toString());
});
selenium.children.push(child);
return started(null, selenium);
});
};
function kill() {
if (selenium && selenium.children) {
for (var i = 0; i < selenium.children.length; i++) {
console.log('Killing selenium with PID:', selenium.children[i].pid);
selenium.children[i].kill();
};
}
if (xvfb) {
console.log('Killing xvfb');
xvfb.stopSync();
}
};
exports.kill = kill;
process.on('SIGINT', function(){
console.log('Process SIGINT');
kill();
});
process.on('SIGTERM', function(){
console.log('Process SIGTERM');
kill();
});
@Dungurothu
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Dungurothu commented Aug 17, 2018

How do you invoke 'selenium.js' file. I tried using the command 'node selenium.js' but it is not invoking.
Can you please clarify how I can invoke?

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