this docker-compose env helps understand basic golang otlp metric exporter.
one can visualize the exported metric in grafana.
follow the below steps to check it.
run go mod vendor in top dir.
cd docker-compose
execute docker-compose up -d
execute docker ps -a to see if all containers are in running state or not.
cd back to top of repo.
execute go run main.go
open grafana in browser : localhost:3000
in explore section, you would be able to see metric starting from test_poc_*
prometheus url : localhost:9090
otlp collector container's metrics : localhost:8888/metrics
metrics related to app : localhost:8889/metrics
Note that, the setup may not be secure.