This script sends an email notification if the HTML files at URL changed.
On linux environments, you can use services like sendEmail and ssmtp (https://doc.ubuntu-fr.org/ssmtp).
- Sleep command is in seconds.
chmod +x script.shthen./monitor.shnohup ./monitor.sh &for background stuff (http://manpages.ubuntu.com/manpages/xenial/fr/man1/nohup.1.html)
node puppeteer.js
We are using a linux environment and systemd.
In your /etc/systemd/system/folder, run these commands one by one:
touch trackerName.service
sudo nano trackerName.service
Copy this content :
[Unit]
Description=Dameon to start nohup script for reverseABtester
After=network.target
[Service]
ExecStart=/usr/bin/nohup /path/to/your/monitor.sh
Type=oneshot
RemainAfterExit=yes
[Install]
WantedBy=multi-user.target
Then enable and start the service :
systemctl enable trackerName
systemctl status trackerName
systemctl start trackerName
Now the script will launch on every boot of the machine.
After a while of fiddling around here are some findings :
- I originally ran the scripts from my machine and automated the daemon on boot. The script would then run at start up and continue to check for differences in the code every hour. I then found it is best used on a dedicated server.
- PhantomJS is not maintained anymore since the launch of headless Chrome (59 and 60 I believe)
- Puppeteer is what seems to have replaced Phantom and Casper altogether as well as having some really interesing features so I may as well give it a go.
- Puppeteer for navigation and screenshot
- ImageMagick for image manipulation
- A web interface to choose what URL, what size you want to compare screenshots, and at which interval
- Node
- Puppeteer
- Resemble.js [https://github.com/HuddleEng/Resemble.js]
- looks-same [https://github.com/gemini-testing/looks-same]
- pixelmatch [https://github.com/mapbox/pixelmatch]
- ImageMagick