[#134] Resend bootstrap txs periodically

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

cmd/neofs-node/config.go

@@ -86,6 +86,9 @@ const (
 	cfgPolicerHeadTimeout = "policer.head_timeout"
 
 	cfgReplicatorPutTimeout = "replicator.put_timeout"
+
+	cfgReBootstrapEnabled  = "bootstrap.periodic.enabled"
+	cfgReBootstrapInterval = "bootstrap.periodic.interval"
 )
 
 const (
@@ -169,6 +172,9 @@ type cfgNetmap struct {
 	subscribers map[event.Type][]event.Handler
 
 	state *networkState
+
+	reBootstrapEnabled  bool
+	reBootstrapInterval uint64 // in epochs
 }
 
 type BootstrapType uint32
@@ -248,6 +254,8 @@ func initCfg(path string) *cfg {
 			scriptHash:          u160Netmap,
 			fee:                 util.Fixed8(viperCfg.GetInt(cfgNetmapFee)),
 			state:               state,
+			reBootstrapInterval: viperCfg.GetUint64(cfgReBootstrapInterval),
+			reBootstrapEnabled:  viperCfg.GetBool(cfgReBootstrapEnabled),
 		},
 		cfgNodeInfo: cfgNodeInfo{
 			bootType:   StorageNode,
@@ -332,6 +340,9 @@ func defaultConfiguration(v *viper.Viper) {
 	v.SetDefault(cfgPolicerHeadTimeout, 5*time.Second)
 
 	v.SetDefault(cfgReplicatorPutTimeout, 5*time.Second)
+
+	v.SetDefault(cfgReBootstrapEnabled, false) // in epochs
+	v.SetDefault(cfgReBootstrapInterval, 2)    // in epochs
 }
 
 func (c *cfg) LocalAddress() *network.Address {

cmd/neofs-node/netmap.go

@@ -58,6 +58,19 @@ func initNetmapService(c *cfg) {
 	addNewEpochNotificationHandler(c, func(ev event.Event) {
 		c.cfgNetmap.state.setCurrentEpoch(ev.(netmapEvent.NewEpoch).EpochNumber())
 	})
+
+	if c.cfgNetmap.reBootstrapEnabled {
+		addNewEpochNotificationHandler(c, func(ev event.Event) {
+			n := ev.(netmapEvent.NewEpoch).EpochNumber()
+
+			if n%c.cfgNetmap.reBootstrapInterval == 0 {
+				err := c.cfgNetmap.wrapper.AddPeer(c.cfgNodeInfo.info)
+				if err != nil {
+					c.log.Warn("can't send re-bootstrap tx", zap.Error(err))
+				}
+			}
+		})
+	}
 }
 
 func bootstrapNode(c *cfg) {