fix: refactor code runCommandDaemon

Signed-off-by: Bhoopesh <bhoopesh459@gmail.com>

sztp-agent/pkg/secureagent/daemon.go

@@ -51,29 +51,45 @@ func (a *Agent) RunCommandDaemon() error {
 			time.Sleep(5 * time.Second)
 			continue
 		}
-		for _, iface := range interfaces {
-			if iface.Flags&net.FlagUp == 0 || iface.Flags&net.FlagLoopback != 0 {
-				continue
-			}
-			log.Println("[INFO] Trying interface: ", iface.Name)
+		err = a.loopInterfaces(interfaces)
+		if err != nil {
+			log.Println("[ERROR] Failed to bootstrap with all interface")
+			log.Println("[INFO] Retrying in 5 seconds")
+			time.Sleep(5 * time.Second)
+			continue
+		}
+		return nil
+	}
+}
 
-			err := performBootstrapSequence(a, iface.Name)
-			if err != nil {
-				log.Println("[INFO] Retrying in 5 seconds")
-				time.Sleep(5 * time.Second)
-				continue
-			}
+func (a *Agent) loopInterfaces(interfaces []net.Interface) error {
+	var isComplete = false
+	for _, iface := range interfaces {
+		if iface.Flags&net.FlagUp == 0 || iface.Flags&net.FlagLoopback != 0 {
+			continue
+		}
+		log.Println("[INFO] Trying interface: ", iface.Name)
 
-			log.Println("[INFO] Done")
-			return nil
+		err := a.performBootstrapSequence(iface.Name)
+		if err == nil {
+			isComplete = true
+			break
 		}
+		log.Println("[ERROR] Failed to bootstrap with interface: ", iface.Name, " error: ", err)
 	}
+	if !isComplete {
+		return errors.New("failed")
+	}
+	return nil
 }
 
-func performBootstrapSequence(a *Agent, ifaceName string) error {
-	err := a.getBootstrapURL(ifaceName)
-	if err != nil {
-		return err
+func (a *Agent) performBootstrapSequence(ifaceName string) error {
+	var err error
+	if a.GetBootstrapURL() == "" {
+		err = a.getBootstrapURL(ifaceName)
+		if err != nil {
+			return err
+		}
 	}
 	err = a.doRequestBootstrapServerOnboardingInfo()
 	if err != nil {

sztp-agent/pkg/secureagent/utils_test.go

@@ -81,7 +81,7 @@ func Test_linesInFileContains(t *testing.T) {
 
 func Test_linesInFileContainsWithInterface(t *testing.T) {
 	dhcpTestFileOK := "/tmp/test.dhcp"
-	createTempTestFile(dhcpTestFileOK, true)
+	createTempTestFile(dhcpTestFileOK, DHCPTestContent, true)
 	type args struct {
 		file   string
 		substr string