Imports github.com/go-kit/kit/log github.com/go-kit/kit/log/level github.com/mwitkow/go-conntrack github.com/prometheus/client_golang/prometheus github.com/prometheus/common/config github.com/prometheus/common/model github.com/prometheus/prometheus/discovery/targetgroup Standard library imports context encoding/json fmt io/ioutil net/http net/url strings time