[#516] node: Do not bootstrap if node is online candidate

Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>

cmd/frostfs-node/config.go

@@ -338,6 +338,7 @@ type internals struct {
 	healthStatus *atomic.Int32
 	// is node under maintenance
 	isMaintenance     atomic.Bool
+	isOnlineCandidate bool
 }
 
 // starts node's maintenance.

cmd/frostfs-node/netmap.go

@@ -227,6 +227,10 @@ func bootstrapNode(c *cfg) {
 			c.log.Info(logs.FrostFSNodeNodeIsUnderMaintenanceSkipInitialBootstrap)
 			return
 		}
+		if c.isOnlineCandidate {
+			c.log.Info(logs.NetmapNodeAlreadyInCandidateListOnlineSkipInitialBootstrap)
+			return
+		}
 		err := c.bootstrap()
 		fatalOnErrDetails("bootstrap error", err)
 	}
@@ -258,7 +262,8 @@ func initNetmapState(c *cfg) {
 	epoch, err := c.cfgNetmap.wrapper.Epoch()
 	fatalOnErrDetails("could not initialize current epoch number", err)
 
-	ni, err := c.netmapInitLocalNodeState(epoch)
+	var ni *netmapSDK.NodeInfo
+	ni, c.isOnlineCandidate, err = c.netmapInitLocalNodeState(epoch)
 	fatalOnErrDetails("could not init network state", err)
 
 	stateWord := nodeState(ni)
@@ -291,27 +296,29 @@ func nodeState(ni *netmapSDK.NodeInfo) string {
 	return "undefined"
 }
 
-func (c *cfg) netmapInitLocalNodeState(epoch uint64) (*netmapSDK.NodeInfo, error) {
+func (c *cfg) netmapInitLocalNodeState(epoch uint64) (*netmapSDK.NodeInfo, bool, error) {
 	nmNodes, err := c.cfgNetmap.wrapper.GetCandidates()
 	if err != nil {
-		return nil, err
+		return nil, false, err
 	}
 
 	var candidate *netmapSDK.NodeInfo
+	isOnlineCandidate := false
 	for i := range nmNodes {
 		if bytes.Equal(nmNodes[i].PublicKey(), c.binPublicKey) {
 			candidate = &nmNodes[i]
+			isOnlineCandidate = candidate.IsOnline()
 			break
 		}
 	}
 
 	node, err := c.netmapLocalNodeState(epoch)
 	if err != nil {
-		return nil, err
+		return nil, false, err
 	}
 
 	if candidate == nil {
-		return node, nil
+		return node, false, nil
 	}
 
 	nmState := nodeState(node)
@@ -323,7 +330,7 @@ func (c *cfg) netmapInitLocalNodeState(epoch uint64) (*netmapSDK.NodeInfo, error
 			zap.String("netmap", nmState),
 			zap.String("candidate", candidateState))
 	}
-	return candidate, nil
+	return candidate, isOnlineCandidate, nil
 }
 
 func (c *cfg) netmapLocalNodeState(epoch uint64) (*netmapSDK.NodeInfo, error) {

internal/logs/logs.go

@@ -493,4 +493,5 @@ const (
 	ShardDeleteCantDeleteFromWriteCache                                     = "can't delete object from write cache"
 	FrostFSNodeNodeIsUnderMaintenanceSkipInitialBootstrap                   = "the node is under maintenance, skip initial bootstrap"
 	EngineCouldNotChangeShardModeToDisabled                                 = "could not change shard mode to disabled"
+	NetmapNodeAlreadyInCandidateListOnlineSkipInitialBootstrap              = "the node is already in candidate list with online state, skip initial bootstrap"
 )