frostfs-node/pkg/innerring/processors/netmap/process_peers.go

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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 AddPeerIR 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 = "addPeerIR"
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()
var 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
}
}