change order of main procedure

Author: micho7

cmd/db-controller/main.go

@@ -62,6 +62,13 @@ func main() {
 
 	logger.Info("Hello, Starting db-controller.")
 
+	// for controlling the traffics that they're to the DB server port.
+	// the function returns nil if the expected chain is already exist.
+	nftConnect := nftables.NewDefaultConnector(logger)
+	if err := nftConnect.CreateChain(chainNameForDBAclFlag); err != nil {
+		panic(err)
+	}
+
 	// get my global ip address
 	myHostAddress, err := getNetIFAddress(globalInterfaceNameFlag)
 	if err != nil {
@@ -74,13 +81,6 @@ func main() {
 		panic(err)
 	}
 
-	// for controlling the traffics that they're to the DB server port.
-	// the function returns nil if the expected chain is already exist.
-	nftConnect := nftables.NewDefaultConnector(logger)
-	if err := nftConnect.CreateChain(chainNameForDBAclFlag); err != nil {
-		panic(err)
-	}
-
 	var bgpPeers []bgpserver.Peer
 	for v := range strings.SplitSeq(bgpPeerAddressesFlag, ",") {
 		bgpPeers = append(bgpPeers, bgpserver.Peer{
@@ -100,10 +100,6 @@ func main() {
 		bgpserver.WithPeers(bgpPeers),
 	)
 
-	// create context
-	ctx, cancel := context.WithCancel(context.Background())
-	defer cancel()
-
 	c := controller.NewController(
 		logger,
 		controller.WithGlobalInterfaceName(globalInterfaceNameFlag),
@@ -117,7 +113,11 @@ func main() {
 	)
 
 	// start goroutines
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
 	wg := new(sync.WaitGroup)
+
 	wg.Add(1)
 	go func(ctx context.Context, wg *sync.WaitGroup, c *controller.Controller) {
 		defer wg.Done()