package netmap import ( "bytes" "encoding/hex" "sort" "strings" netmapclient "github.com/nspcc-dev/neofs-node/pkg/morph/client/netmap" netmapEvent "github.com/nspcc-dev/neofs-node/pkg/morph/event/netmap" subnetEvent "github.com/nspcc-dev/neofs-node/pkg/morph/event/subnet" "github.com/nspcc-dev/neofs-sdk-go/netmap" subnetid "github.com/nspcc-dev/neofs-sdk-go/subnet/id" "go.uber.org/zap" ) // Process add peer notification by sanity check of new node // local epoch timer. func (np *Processor) processAddPeer(ev netmapEvent.AddPeer) { if !np.alphabetState.IsAlphabet() { np.log.Info("non alphabet mode, ignore new peer notification") return } // check if notary transaction is valid, see #976 if originalRequest := ev.NotaryRequest(); originalRequest != nil { tx := originalRequest.MainTransaction ok, err := np.netmapClient.Morph().IsValidScript(tx.Script, tx.Signers) if err != nil || !ok { np.log.Warn("non-halt notary transaction", zap.String("method", "netmap.AddPeer"), zap.String("hash", tx.Hash().StringLE()), zap.Error(err)) return } } // unmarshal node info nodeInfo := netmap.NewNodeInfo() if err := nodeInfo.Unmarshal(ev.Node()); err != nil { // it will be nice to have tx id at event structure to log it np.log.Warn("can't parse network map candidate") return } // validate and update node info err := np.nodeValidator.VerifyAndUpdate(nodeInfo) if err != nil { np.log.Warn("could not verify and update information about network map candidate", zap.String("error", err.Error()), ) return } // sort attributes to make it consistent a := nodeInfo.Attributes() sort.Slice(a, func(i, j int) bool { switch strings.Compare(a[i].Key(), a[j].Key()) { case -1: return true case 1: return false default: return a[i].Value() < a[j].Value() } }) nodeInfo.SetAttributes(a...) // marshal updated node info structure nodeInfoBinary, err := nodeInfo.Marshal() if err != nil { np.log.Warn("could not marshal updated network map candidate", zap.String("error", err.Error()), ) return } keyString := hex.EncodeToString(nodeInfo.PublicKey()) updated := np.netmapSnapshot.touch(keyString, np.epochState.EpochCounter(), nodeInfoBinary) if updated { np.log.Info("approving network map candidate", zap.String("key", keyString)) prm := netmapclient.AddPeerPrm{} prm.SetNodeInfo(nodeInfo) // In notary environments we call Register method instead of AddPeer. // It differs from AddPeer only by name, so we can do this in the same form. // See https://github.com/nspcc-dev/neofs-contract/issues/154. const methodAddPeerNotary = "register" if nr := ev.NotaryRequest(); nr != nil { // create new notary request with the original nonce err = np.netmapClient.Morph().NotaryInvoke( np.netmapClient.ContractAddress(), 0, nr.MainTransaction.Nonce, nil, methodAddPeerNotary, nodeInfoBinary, ) } else { // notification event case err = np.netmapClient.AddPeer(prm) } if err != nil { np.log.Error("can't invoke netmap.AddPeer", zap.Error(err)) } } } // Process update peer notification by sending approval tx to the smart contract. func (np *Processor) processUpdatePeer(ev netmapEvent.UpdatePeer) { if !np.alphabetState.IsAlphabet() { np.log.Info("non alphabet mode, ignore update peer notification") return } // better use unified enum from neofs-api-go/v2/netmap package if ev.Status() != netmap.NodeStateOffline { np.log.Warn("node proposes unknown state", zap.String("key", hex.EncodeToString(ev.PublicKey().Bytes())), zap.Stringer("status", ev.Status()), ) return } // flag node to remove from local view, so it can be re-bootstrapped // again before new epoch will tick np.netmapSnapshot.flag(hex.EncodeToString(ev.PublicKey().Bytes())) var err error if nr := ev.NotaryRequest(); nr != nil { err = np.netmapClient.Morph().NotarySignAndInvokeTX(nr.MainTransaction) } else { prm := netmapclient.UpdatePeerPrm{} prm.SetState(ev.Status()) prm.SetKey(ev.PublicKey().Bytes()) err = np.netmapClient.UpdatePeerState(prm) } if err != nil { np.log.Error("can't invoke netmap.UpdatePeer", zap.Error(err)) } } func (np *Processor) processRemoveSubnetNode(ev subnetEvent.RemoveNode) { if !np.alphabetState.IsAlphabet() { np.log.Info("non alphabet mode, ignore remove node from subnet notification") return } candidates, err := np.netmapClient.GetCandidates() if err != nil { np.log.Warn("could not get network map candidates", zap.Error(err), ) return } rawSubnet := ev.SubnetworkID() subnetToRemoveFrom := &subnetid.ID{} err = subnetToRemoveFrom.Unmarshal(rawSubnet) if err != nil { np.log.Warn("could not unmarshal subnet id", zap.Error(err), ) return } if subnetid.IsZero(*subnetToRemoveFrom) { np.log.Warn("got zero subnet in remove node notification") return } for _, node := range candidates.Nodes { if !bytes.Equal(node.NodeInfo.PublicKey(), ev.Node()) { continue } err = node.IterateSubnets(func(subNetID subnetid.ID) error { if subNetID.Equals(subnetToRemoveFrom) { return netmap.ErrRemoveSubnet } return nil }) if err != nil { np.log.Warn("could not iterate over subnetworks of the node", zap.Error(err)) np.log.Info("vote to remove node from netmap", zap.String("key", hex.EncodeToString(ev.Node()))) prm := netmapclient.UpdatePeerPrm{} prm.SetKey(ev.Node()) prm.SetState(netmap.NodeStateOffline) prm.SetHash(ev.TxHash()) err = np.netmapClient.UpdatePeerState(prm) if err != nil { np.log.Error("could not invoke netmap.UpdateState", zap.Error(err)) return } } else { prm := netmapclient.AddPeerPrm{} prm.SetNodeInfo(node.NodeInfo) prm.SetHash(ev.TxHash()) err = np.netmapClient.AddPeer(prm) if err != nil { np.log.Error("could not invoke netmap.AddPeer", zap.Error(err)) return } } break } }