// ------- Init storage -----------
func initStorage() {
var err error
//TODO consensus requires persistent storage. Here we are using an in memory only. Fix it for real fault tolerance.
storage, err = kv.CreateMem(new(kv.Options))
if err != nil {
log.Fatalln("initStorage error:", err)
}
}
func openOrCreate(dbfile string) (*kv.DB, error) {
opt := &kv.Options{VerifyDbBeforeOpen: true,
VerifyDbAfterOpen: true,
VerifyDbBeforeClose: true,
VerifyDbAfterClose: true}
if len(dbfile) == 0 {
// in memory database
return kv.CreateMem(opt)
}
_, err := os.Stat(dbfile)
if os.IsNotExist(err) {
return kv.Create(dbfile, opt)
} else {
return kv.Open(dbfile, opt)
}
}