*: check raftcluster nil (#7054)

server/grpc_service.go

@@ -1072,7 +1072,6 @@ func (s *GrpcServer) ReportBatchSplit(ctx context.Context, request *pdpb.ReportB
 	if rc == nil {
 		return &pdpb.ReportBatchSplitResponse{Header: s.notBootstrappedHeader()}, nil
 	}
-
 	_, err := rc.HandleBatchReportSplit(request)
 	if err != nil {
 		return nil, status.Errorf(codes.Unknown, err.Error())

server/handler.go

@@ -901,14 +901,20 @@ func (h *Handler) ResetTS(ts uint64) error {
 
 // SetStoreLimitScene sets the limit values for different scenes
 func (h *Handler) SetStoreLimitScene(scene *storelimit.Scene, limitType storelimit.Type) {
-	cluster := h.s.GetRaftCluster()
-	cluster.GetStoreLimiter().ReplaceStoreLimitScene(scene, limitType)
+	rc := h.s.GetRaftCluster()
+	if rc == nil {
+		return
+	}
+	rc.GetStoreLimiter().ReplaceStoreLimitScene(scene, limitType)
 }
 
 // GetStoreLimitScene returns the limit values for different scenes
 func (h *Handler) GetStoreLimitScene(limitType storelimit.Type) *storelimit.Scene {
-	cluster := h.s.GetRaftCluster()
-	return cluster.GetStoreLimiter().StoreLimitScene(limitType)
+	rc := h.s.GetRaftCluster()
+	if rc == nil {
+		return nil
+	}
+	return rc.GetStoreLimiter().StoreLimitScene(limitType)
 }
 
 // PluginLoad loads the plugin referenced by the pluginPath

server/server.go

@@ -853,18 +853,18 @@ func (s *Server) SetReplicationConfig(cfg config.ReplicationConfig) error {
 	}
 	old := s.persistOptions.GetReplicationConfig()
 	if cfg.EnablePlacementRules != old.EnablePlacementRules {
-		raftCluster := s.GetRaftCluster()
-		if raftCluster == nil {
+		rc := s.GetRaftCluster()
+		if rc == nil {
 			return errs.ErrNotBootstrapped.GenWithStackByArgs()
 		}
 		if cfg.EnablePlacementRules {
 			// initialize rule manager.
-			if err := raftCluster.GetRuleManager().Initialize(int(cfg.MaxReplicas), cfg.LocationLabels, cfg.IsolationLevel); err != nil {
+			if err := rc.GetRuleManager().Initialize(int(cfg.MaxReplicas), cfg.LocationLabels, cfg.IsolationLevel); err != nil {
 				return err
 			}
 		} else {
 			// NOTE: can be removed after placement rules feature is enabled by default.
-			for _, s := range raftCluster.GetStores() {
+			for _, s := range rc.GetStores() {
 				if !s.IsTombstone() && core.IsStoreContainLabel(s.GetMeta(), core.EngineKey, core.EngineTiFlash) {
 					return errors.New("cannot disable placement rules with TiFlash nodes")
 				}
@@ -874,8 +874,12 @@ func (s *Server) SetReplicationConfig(cfg config.ReplicationConfig) error {
 
 	var rule *placement.Rule
 	if cfg.EnablePlacementRules {
+		rc := s.GetRaftCluster()
+		if rc == nil {
+			return errs.ErrNotBootstrapped.GenWithStackByArgs()
+		}
 		// replication.MaxReplicas won't work when placement rule is enabled and not only have one default rule.
-		defaultRule := s.GetRaftCluster().GetRuleManager().GetRule("pd", "default")
+		defaultRule := rc.GetRuleManager().GetRule("pd", "default")
 
 		CheckInDefaultRule := func() error {
 			// replication config won't work when placement rule is enabled and exceeds one default rule
@@ -902,7 +906,11 @@ func (s *Server) SetReplicationConfig(cfg config.ReplicationConfig) error {
 		rule.Count = int(cfg.MaxReplicas)
 		rule.LocationLabels = cfg.LocationLabels
 		rule.IsolationLevel = cfg.IsolationLevel
-		if err := s.GetRaftCluster().GetRuleManager().SetRule(rule); err != nil {
+		rc := s.GetRaftCluster()
+		if rc == nil {
+			return errs.ErrNotBootstrapped.GenWithStackByArgs()
+		}
+		if err := rc.GetRuleManager().SetRule(rule); err != nil {
 			log.Error("failed to update rule count",
 				errs.ZapError(err))
 			return err
@@ -914,7 +922,11 @@ func (s *Server) SetReplicationConfig(cfg config.ReplicationConfig) error {
 		s.persistOptions.SetReplicationConfig(old)
 		if rule != nil {
 			rule.Count = int(old.MaxReplicas)
-			if e := s.GetRaftCluster().GetRuleManager().SetRule(rule); e != nil {
+			rc := s.GetRaftCluster()
+			if rc == nil {
+				return errs.ErrNotBootstrapped.GenWithStackByArgs()
+			}
+			if e := rc.GetRuleManager().SetRule(rule); e != nil {
 				log.Error("failed to roll back count of rule when update replication config", errs.ZapError(e))
 			}
 		}
@@ -1088,18 +1100,18 @@ func (s *Server) GetServerOption() *config.PersistOptions {
 
 // GetMetaRegions gets meta regions from cluster.
 func (s *Server) GetMetaRegions() []*metapb.Region {
-	cluster := s.GetRaftCluster()
-	if cluster != nil {
-		return cluster.GetMetaRegions()
+	rc := s.GetRaftCluster()
+	if rc != nil {
+		return rc.GetMetaRegions()
 	}
 	return nil
 }
 
 // GetRegions gets regions from cluster.
 func (s *Server) GetRegions() []*core.RegionInfo {
-	cluster := s.GetRaftCluster()
-	if cluster != nil {
-		return cluster.GetRegions()
+	rc := s.GetRaftCluster()
+	if rc != nil {
+		return rc.GetRegions()
 	}
 	return nil
 }
@@ -1154,9 +1166,9 @@ func (s *Server) SetReplicationModeConfig(cfg config.ReplicationModeConfig) erro
 	}
 	log.Info("replication mode config is updated", zap.Reflect("new", cfg), zap.Reflect("old", old))
 
-	cluster := s.GetRaftCluster()
-	if cluster != nil {
-		err := cluster.GetReplicationMode().UpdateConfig(cfg)
+	rc := s.GetRaftCluster()
+	if rc != nil {
+		err := rc.GetReplicationMode().UpdateConfig(cfg)
 		if err != nil {
 			log.Warn("failed to update replication mode", errs.ZapError(err))
 			// revert to old config