To gather some apples with support from Jaeger first run (from the project root)
pip install -r requirements.txt
then run
python -m grpc_tools.protoc -I. --python_out=. --grpc_python_out=. appletree.proto
(and don't be irritated by the Bazel stuff. It's not of much use...)
Afterwards start the Jaeger all-in-one Docker Container with
docker run -p 16686:16686 -p 6831:6831/udp jaegertracing/all-in-one
(see https://opentelemetry.io/docs/instrumentation/python/getting-started/ for more details).
The GUI should be reachable under https://localhost:16686/ now.
In two separate terminals: 1) start the server
python appletree_server.py
and 2) start the client.
python appletree_client.py
In Hessen they like to make Äppler out of the Äppel. But that is not supported yet...