Imports github.com/prometheus/client_golang/prometheus gopkg.in/alecthomas/kingpin.v2 github.com/gorilla/mux github.com/prometheus/client_golang/prometheus/promhttp github.com/prometheus/alertmanager/api/v2/models github.com/prometheus/common/log gopkg.in/yaml.v2 Standard library imports encoding/json fmt io io/ioutil log net/http net/url os path regexp time