Imports github.com/boltdb/bolt github.com/codegangsta/negroni github.com/gorilla/mux github.com/miekg/dns github.com/prometheus/client_golang/prometheus github.com/prometheus/client_golang/prometheus/promhttp Standard library imports bytes crypto/sha1 crypto/sha256 crypto/tls crypto/x509 embed encoding/base64 encoding/hex encoding/json errors fmt log net net/http strings sync time