Simple Python app (microservice) to read the Environment Canada weather XML file for the City of Moncton and write output to stdio or Redis server. It is intended to be run from systemd as a service, but it should also work under whatever scheduler or service manager you use.

requires a running Redis server, Python 3.7+, Redis-py, e.g., pip install redis.

see requirements.txt for additional PyPi packages.

You will need to ensure the packages listed in requirements.txt are installed.

beautifulsoup4==4.9.3
lxml==4.6.3
python-dateutil==2.8.1
redis==3.5.3
urllib3==1.26.4

Install them with pip [package_name]. I recommend using a python venv for this.

If you want to run this to try it out, python weather_poller.py from this directory will run once and exit, printing some output to the console. (note, you may have to run python3 if you don't have an alias or link for that on your system).

Assuming you are running this as ubuntu user, with a virtual environment setup under ~/.venvs/default/, and your script is installed under ~/Projects/weather_poller, add the following to your /etc/systemd/system folder, name it something sensible like weather_poller.service:

[Unit]
Description=Weather Poller Service
After=redis-server.service

[Service]
Type=simple
User=ubuntu
ExecStart=/home/ubuntu/.venvs/default/bin/python /home/ubuntu/Projects/weather_poller/weather_poller.py -r -f 600 -k weather
Restart=on-abort

[Install]
WantedBy=multi-user.target

After installation, run sudo systemctl daemon-reload to pick up the changes, then sudo systemctl start weather_poller.service (assuming that's the name you gave it).

You can be sure it's running by checking sudo systemctl status weather_poller and sudo journalctl -e -u weather_poller for details.

When satisfied that everything is working as intended, you can permanently install the temperature monitor by entering sudo systemctl enable weather_poller.

Same as above, but give each poller service a unique description and filename. You will want to adjust the Key argument (-k) to be unique so you don't overwrite each poller's contents in redis.

Do what you want with this.