[#339] cmd/node: Change the way the local NodeInfo structure is stored

Implement NodeState interface required by Netmap service. Make a single
point of updating the state of the node (for both Netmap and Control
services). Protect node info structure from data race.

Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>

cmd/neofs-node/config.go

@@ -15,6 +15,7 @@ import (
 	"github.com/nspcc-dev/neo-go/pkg/util"
 	"github.com/nspcc-dev/neofs-api-go/pkg"
 	"github.com/nspcc-dev/neofs-api-go/pkg/netmap"
+	netmapV2 "github.com/nspcc-dev/neofs-api-go/v2/netmap"
 	crypto "github.com/nspcc-dev/neofs-crypto"
 	"github.com/nspcc-dev/neofs-node/misc"
 	"github.com/nspcc-dev/neofs-node/pkg/core/container"
@@ -244,7 +245,8 @@ type cfgNodeInfo struct {
 	attributes []*netmap.NodeAttribute
 
 	// values at runtime
-	info *netmap.NodeInfo
+	infoMtx sync.RWMutex
+	info    netmap.NodeInfo
 }
 
 type cfgObject struct {
@@ -646,3 +648,47 @@ func initObjectPool(cfg *viper.Viper) (pool cfgObjectRoutines) {
 
 	return pool
 }
+
+func (c *cfg) LocalNodeInfo() (*netmapV2.NodeInfo, error) {
+	ni := c.localNodeInfo()
+	return ni.ToV2(), nil
+}
+
+func (c *cfg) handleLocalNodeInfo(ni *netmap.NodeInfo) {
+	c.cfgNodeInfo.infoMtx.Lock()
+
+	var nmState netmap.NodeState
+
+	if ni != nil {
+		c.cfgNodeInfo.info = *ni
+		nmState = ni.State()
+	} else {
+		nmState = netmap.NodeStateOffline
+		c.cfgNodeInfo.info.SetState(nmState)
+	}
+
+	switch nmState {
+	default:
+		c.setNetmapStatus(control.NetmapStatus_STATUS_UNDEFINED)
+	case netmap.NodeStateOnline:
+		c.setNetmapStatus(control.NetmapStatus_ONLINE)
+	case netmap.NodeStateOffline:
+		c.setNetmapStatus(control.NetmapStatus_OFFLINE)
+	}
+
+	c.cfgNodeInfo.infoMtx.Unlock()
+}
+
+func (c *cfg) localNodeInfo() netmap.NodeInfo {
+	c.cfgNodeInfo.infoMtx.RLock()
+	defer c.cfgNodeInfo.infoMtx.RUnlock()
+
+	return c.cfgNodeInfo.info
+}
+
+func (c *cfg) toOnlineLocalNodeInfo() *netmap.NodeInfo {
+	ni := c.localNodeInfo()
+	ni.SetState(netmap.NodeStateOnline)
+
+	return &ni
+}

cmd/neofs-node/netmap.go

@@ -40,8 +40,9 @@ func initNetmapService(c *cfg) {
 	peerInfo.SetAddress(c.localAddr.String())
 	peerInfo.SetPublicKey(crypto.MarshalPublicKey(&c.key.PublicKey))
 	peerInfo.SetAttributes(c.cfgNodeInfo.attributes...)
+	peerInfo.SetState(netmap.NodeStateOffline)
 
-	c.cfgNodeInfo.info = peerInfo
+	c.handleLocalNodeInfo(peerInfo)
 
 	netmapGRPC.RegisterNetmapServiceServer(c.cfgGRPC.server,
 		netmapTransportGRPC.New(
@@ -49,7 +50,7 @@ func initNetmapService(c *cfg) {
 				c.key,
 				netmapService.NewResponseService(
 					netmapService.NewExecutionService(
-						c.cfgNodeInfo.info.ToV2(),
+						c,
 						c.apiVersion,
 					),
 					c.respSvc,
@@ -67,7 +68,7 @@ func initNetmapService(c *cfg) {
 			n := ev.(netmapEvent.NewEpoch).EpochNumber()
 
 			if n%c.cfgNetmap.reBootstrapInterval == 0 {
-				err := c.cfgNetmap.wrapper.AddPeer(c.cfgNodeInfo.info)
+				err := c.cfgNetmap.wrapper.AddPeer(c.toOnlineLocalNodeInfo())
 				if err != nil {
 					c.log.Warn("can't send re-bootstrap tx", zap.Error(err))
 				}
@@ -78,9 +79,9 @@ func initNetmapService(c *cfg) {
 	addNewEpochNotificationHandler(c, func(ev event.Event) {
 		e := ev.(netmapEvent.NewEpoch).EpochNumber()
 
-		netStatus, err := c.netmapStatus(e)
+		ni, err := c.netmapLocalNodeState(e)
 		if err != nil {
-			c.log.Error("could not update network status on new epoch",
+			c.log.Error("could not update node state on new epoch",
 				zap.Uint64("epoch", e),
 				zap.String("error", err.Error()),
 			)
@@ -88,14 +89,14 @@ func initNetmapService(c *cfg) {
 			return
 		}
 
-		c.setNetmapStatus(netStatus)
+		c.handleLocalNodeInfo(ni)
 	})
 }
 
 func bootstrapNode(c *cfg) {
 	initState(c)
 
-	err := c.cfgNetmap.wrapper.AddPeer(c.cfgNodeInfo.info)
+	err := c.cfgNetmap.wrapper.AddPeer(c.toOnlineLocalNodeInfo())
 	fatalOnErr(errors.Wrap(err, "bootstrap error"))
 }
 
@@ -123,41 +124,37 @@ func initState(c *cfg) {
 	epoch, err := c.cfgNetmap.wrapper.Epoch()
 	fatalOnErr(errors.Wrap(err, "could not initialize current epoch number"))
 
-	netStatus, err := c.netmapStatus(epoch)
-	fatalOnErr(errors.Wrap(err, "could not init network status"))
+	ni, err := c.netmapLocalNodeState(epoch)
+	fatalOnErr(errors.Wrap(err, "could not init network state"))
 
-	c.setNetmapStatus(netStatus)
+	c.handleLocalNodeInfo(ni)
 
 	c.log.Info("initial network state",
 		zap.Uint64("epoch", epoch),
-		zap.Stringer("status", netStatus),
+		zap.Stringer("state", ni.State()),
 	)
 
 	c.cfgNetmap.state.setCurrentEpoch(epoch)
 }
 
-func (c *cfg) netmapStatus(epoch uint64) (control.NetmapStatus, error) {
+func (c *cfg) netmapLocalNodeState(epoch uint64) (*netmap.NodeInfo, error) {
 	// calculate current network state
 	nm, err := c.cfgNetmap.wrapper.GetNetMapByEpoch(epoch)
 	if err != nil {
-		return control.NetmapStatus_STATUS_UNDEFINED, err
+		return nil, err
 	}
 
-	if c.inNetmap(nm) {
-		return control.NetmapStatus_ONLINE, nil
+	return c.localNodeInfoFromNetmap(nm), nil
 }
 
-	return control.NetmapStatus_OFFLINE, nil
-}
-
-func (c *cfg) inNetmap(nm *netmap.Netmap) bool {
+func (c *cfg) localNodeInfoFromNetmap(nm *netmap.Netmap) *netmap.NodeInfo {
 	for _, n := range nm.Nodes {
 		if bytes.Equal(n.PublicKey(), crypto.MarshalPublicKey(&c.key.PublicKey)) {
-			return true
+			return n.NodeInfo
 		}
 	}
 
-	return false
+	return nil
 }
 
 func addNewEpochNotificationHandler(c *cfg, h event.Handler) {
@@ -181,7 +178,7 @@ func goOffline(c *cfg) {
 
 func (c *cfg) SetNetmapStatus(st control.NetmapStatus) error {
 	if st == control.NetmapStatus_ONLINE {
-		return c.cfgNetmap.wrapper.AddPeer(c.cfgNodeInfo.info)
+		return c.cfgNetmap.wrapper.AddPeer(c.toOnlineLocalNodeInfo())
 	}
 
 	var apiState netmap.NodeState