Imports github.com/prometheus/client_golang/prometheus github.com/prometheus/client_golang/prometheus/promhttp github.com/prometheus/common/log github.com/prometheus/common/version golang.org/x/net/html golang.org/x/net/html/atom gopkg.in/alecthomas/kingpin.v2 Standard library imports bytes fmt io net/http net/url path strconv strings sync time