Imports github.com/prometheus/client_golang/prometheus github.com/go-kit/kit/log github.com/go-kit/kit/log/level github.com/prometheus/common/model github.com/prometheus/prometheus/discovery/targetgroup gopkg.in/yaml.v2 gopkg.in/fsnotify/fsnotify.v1 Standard library imports context encoding/json errors fmt io/ioutil os path/filepath regexp strings sync time