Imports github.com/codegangsta/negroni github.com/gorilla/mux github.com/syndtr/goleveldb/leveldb github.com/syndtr/goleveldb/leveldb/opt github.com/syndtr/goleveldb/leveldb/util Standard library imports bytes encoding/json flag fmt io/ioutil log net net/http os os/exec os/signal strconv strings syscall text/template time