Owlbert

Owlbert is a small guy - obviously an owl - who emits his calling on gitlab webhooks.

How to build

go build owlbert.go

How to start

For running on port 8080:

./owlbert 8080

How to use

1. Place a file in webhooks/ like the provided my-project.json.
2. Set up a custom, random secret token for keeping your owlbert private.
3. Modify the calling for each gitlab object kind you want to handle. Every value is a duration in milliseconds (negative = LOW = no calling, positive = HIGH = calling). E.g. [1000, -500, 2000] would emit the calling for a second, wait half a second doing nothing and then emit another two beautiful seconds of the calling.
4. Use the owlbert url as gitlab webhook, including your port and your filename without the .json ending, e.g. http://localhost:8080/webhooks/my-project.

Example installation on a RaspberryPI

Place owlbert at /home/pi and create /home/pi/webhooks with your config files.

Install a service for owlbert /etc/systemd/system/owlbert.service:

[Unit]
Description=Owlbert
After=network.target

[Service]
Type=simple
WorkingDirectory=/home/pi
ExecStart=/home/pi/owlbert 8080
User=pi
StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=owlbert

[Install]
WantedBy=multi-user.target

(Optional) Forward the local owlbert via ssh. Use autossh to keep the connection alive /etc/systemd/system/owlbert-forward.service:

[Unit]
Description=Owlbert Forward
After=network.target

[Service]
Type=simple
WorkingDirectory=/home/pi
ExecStart=/usr/bin/autossh -M 20000 -N user@your-server -R 9000:localhost:8080 -C
User=pi
Group=pi

[Install]
WantedBy=multi-user.target

This example redirects the owlbert from localhost:8080 to your-server:9000. The port 20000 is used for autossh's alive checks.

Now just enable and start the systemd services as usual.