Imports github.com/boltdb/bolt github.com/syndtr/goleveldb/leveldb github.com/syndtr/goleveldb/leveldb/filter github.com/syndtr/goleveldb/leveldb/opt github.com/syndtr/goleveldb/leveldb/util gopkg.in/mgo.v2 gopkg.in/mgo.v2/bson Standard library imports bytes encoding/binary errors fmt net/url strconv strings time