package governance import ( "encoding/binary" "encoding/hex" "sort" "strings" "github.com/nspcc-dev/neo-go/pkg/crypto/keys" "go.uber.org/zap" ) const ( alphabetUpdateIDPrefix = "AlphabetUpdate" ) func (gp *Processor) processAlphabetSync() { if !gp.alphabetState.IsAlphabet() { gp.log.Info("non alphabet mode, ignore alphabet sync") return } mainnetAlphabet, err := gp.mainnetClient.NeoFSAlphabetList() if err != nil { gp.log.Error("can't fetch alphabet list from main net", zap.String("error", err.Error())) return } sidechainAlphabet, err := gp.morphClient.Committee() if err != nil { gp.log.Error("can't fetch alphabet list from side chain", zap.String("error", err.Error())) return } newAlphabet, err := newAlphabetList(sidechainAlphabet, mainnetAlphabet) if err != nil { gp.log.Error("can't merge alphabet lists from main net and side chain", zap.String("error", err.Error())) return } if newAlphabet == nil { gp.log.Info("no governance update, alphabet list has not been changed") return } gp.log.Info("alphabet list has been changed, starting update", zap.String("side_chain_alphabet", prettyKeys(sidechainAlphabet)), zap.String("new_alphabet", prettyKeys(newAlphabet)), ) // 1. Vote to side chain committee via alphabet contracts. err = gp.voter.VoteForSidechainValidator(newAlphabet) if err != nil { gp.log.Error("can't vote for side chain committee", zap.String("error", err.Error())) } // 2. Update NeoFSAlphabet role in side chain. innerRing, err := gp.irFetcher.InnerRingKeys() if err != nil { gp.log.Error("can't fetch inner ring list from side chain", zap.String("error", err.Error())) } else { newInnerRing, err := updateInnerRing(innerRing, sidechainAlphabet, newAlphabet) if err != nil { gp.log.Error("can't create new inner ring list with new alphabet keys", zap.String("error", err.Error())) } else { sort.Sort(newInnerRing) gp.log.Info("update of the inner ring list", zap.String("before", prettyKeys(innerRing)), zap.String("after", prettyKeys(newInnerRing)), ) if gp.notaryDisabled { err = gp.netmapClient.UpdateInnerRing(newInnerRing) } else { err = gp.morphClient.UpdateNeoFSAlphabetList(newInnerRing) } if err != nil { gp.log.Error("can't update inner ring list with new alphabet keys", zap.String("error", err.Error())) } } } if !gp.notaryDisabled { // 3. Update notary role in side chain. err = gp.morphClient.UpdateNotaryList(newAlphabet) if err != nil { gp.log.Error("can't update list of notary nodes in side chain", zap.String("error", err.Error())) } } // 4. Update NeoFS contract in main net. epoch := gp.epochState.EpochCounter() buf := make([]byte, 8) binary.LittleEndian.PutUint64(buf, epoch) id := append([]byte(alphabetUpdateIDPrefix), buf...) err = gp.neofsClient.AlphabetUpdate(id, newAlphabet) if err != nil { gp.log.Error("can't update list of alphabet nodes in neofs contract", zap.String("error", err.Error())) } gp.log.Info("finished alphabet list update") } func prettyKeys(keys keys.PublicKeys) string { const delimiter = "," sb := strings.Builder{} for _, key := range keys { sb.WriteString(hex.EncodeToString(key.Bytes())) sb.WriteString(delimiter) } return strings.TrimRight(sb.String(), delimiter) }