$ go run bogops_exporter.go
$ curl http://127.0.0.1:8080/metrics

# TYPE ze_bogops_at_octo gauge
# HELP ze_bogops_at_octo Les bogops chez OCTO.
ze_bogops_at_octo{level="Consultant"} 42

# TYPE ze_status_code gauge
# HELP ze_status_code Un status code.
ze_status_code 201

go build bogops_exporter.go
./bogops_exporter

go mod init bogops_exporter

go get github.com/prometheus/client_golang/prometheus
go get github.com/prometheus/client_golang/prometheus/promauto
go get github.com/prometheus/client_golang/prometheus/promhttp

go mod tidy