This is a Flask application for serving a graph of cable modem speeds. The data source is JSON Lines, obtained by periodically running something like
./librespeed-cli --json --telemetry-level disabled' | tail -n 1 | awk '{$1=$1};1' | jq -c -M '.[0] + {"source":"myhouse"}' >> speeds.jsonl
(You may want to specify what server librespeed-cli should use with
--server <x> where the ID comes from ./librespeed-cli --list, so
you're not measuring apples and oranges. Note that setting the server
in a cron job is fragile, should the list of servers change.)
You can concatenate such files from multiple sources into a single
file, then specify its location in .env along with FLASK_APP:
FLASK_APP='speeds/speeds.py'
SPEEDS='/path/to/my/speeds.jsonl'
Once you've installed Poetry and run
poetry install
you should be able to run
poetry run flask run
and see the graph at http://127.0.0.1:5000/
It defaults to showing one month of data, but you can use all or
an integer in the URL to see a different number of months, or a range
of dates in the form YYYYMMDD-YYYYMMDD.