working on system management

backend/internal/system/service.go

@@ -175,3 +175,173 @@ func (s *Service) GenerateSupportBundle(ctx context.Context, outputPath string)
 	return nil
 }
 
+// NetworkInterface represents a network interface
+type NetworkInterface struct {
+	Name      string `json:"name"`
+	IPAddress string `json:"ip_address"`
+	Subnet    string `json:"subnet"`
+	Status    string `json:"status"` // "Connected" or "Down"
+	Speed     string `json:"speed"`  // e.g., "10 Gbps", "1 Gbps"
+	Role      string `json:"role"`   // "Management", "ISCSI", or empty
+}
+
+// ListNetworkInterfaces lists all network interfaces
+func (s *Service) ListNetworkInterfaces(ctx context.Context) ([]NetworkInterface, error) {
+	// First, get all interface names and their states
+	cmd := exec.CommandContext(ctx, "ip", "link", "show")
+	output, err := cmd.Output()
+	if err != nil {
+		s.logger.Error("Failed to list interfaces", "error", err)
+		return nil, fmt.Errorf("failed to list interfaces: %w", err)
+	}
+
+	interfaceMap := make(map[string]*NetworkInterface)
+	lines := strings.Split(string(output), "\n")
+
+	s.logger.Debug("Parsing network interfaces", "output_lines", len(lines))
+
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+
+		// Parse interface name and state
+		// Format: "2: ens18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT group default qlen 1000"
+		// Look for lines that start with a number followed by ":" (interface definition line)
+		// Simple check: line starts with digit, contains ":", and contains "state"
+		if len(line) > 0 && line[0] >= '0' && line[0] <= '9' && strings.Contains(line, ":") && strings.Contains(line, "state") {
+			parts := strings.Fields(line)
+			if len(parts) < 2 {
+				continue
+			}
+
+			// Extract interface name (e.g., "ens18:" or "lo:")
+			ifaceName := strings.TrimSuffix(parts[1], ":")
+			if ifaceName == "" || ifaceName == "lo" {
+				continue // Skip loopback
+			}
+
+			// Extract state - look for "state UP" or "state DOWN" in the line
+			state := "Down"
+			if strings.Contains(line, "state UP") {
+				state = "Connected"
+			} else if strings.Contains(line, "state DOWN") {
+				state = "Down"
+			}
+
+			s.logger.Info("Found interface", "name", ifaceName, "state", state)
+
+			interfaceMap[ifaceName] = &NetworkInterface{
+				Name:   ifaceName,
+				Status: state,
+				Speed:  "Unknown",
+			}
+		}
+	}
+
+	s.logger.Debug("Found interfaces from ip link", "count", len(interfaceMap))
+
+	// Get IP addresses for each interface
+	cmd = exec.CommandContext(ctx, "ip", "-4", "addr", "show")
+	output, err = cmd.Output()
+	if err != nil {
+		s.logger.Warn("Failed to get IP addresses", "error", err)
+	} else {
+		lines = strings.Split(string(output), "\n")
+		var currentIfaceName string
+		for _, line := range lines {
+			line = strings.TrimSpace(line)
+			if line == "" {
+				continue
+			}
+
+			// Parse interface name (e.g., "2: ens18: <BROADCAST,MULTICAST,UP,LOWER_UP>")
+			if strings.Contains(line, ":") && !strings.Contains(line, "inet") && !strings.HasPrefix(line, "valid_lft") && !strings.HasPrefix(line, "altname") {
+				parts := strings.Fields(line)
+				if len(parts) >= 2 {
+					currentIfaceName = strings.TrimSuffix(parts[1], ":")
+					s.logger.Debug("Processing interface for IP", "name", currentIfaceName)
+				}
+				continue
+			}
+
+			// Parse IP address (e.g., "inet 10.10.14.16/24 brd 10.10.14.255 scope global ens18")
+			if strings.HasPrefix(line, "inet ") && currentIfaceName != "" && currentIfaceName != "lo" {
+				parts := strings.Fields(line)
+				if len(parts) >= 2 {
+					ipWithSubnet := parts[1] // e.g., "10.10.14.16/24"
+					ipParts := strings.Split(ipWithSubnet, "/")
+					if len(ipParts) == 2 {
+						ip := ipParts[0]
+						subnet := ipParts[1]
+
+						// Find or create interface
+						iface, exists := interfaceMap[currentIfaceName]
+						if !exists {
+							s.logger.Debug("Creating new interface entry", "name", currentIfaceName)
+							iface = &NetworkInterface{
+								Name:   currentIfaceName,
+								Status: "Down",
+								Speed:  "Unknown",
+							}
+							interfaceMap[currentIfaceName] = iface
+						}
+
+						iface.IPAddress = ip
+						iface.Subnet = subnet
+						s.logger.Debug("Set IP for interface", "name", currentIfaceName, "ip", ip, "subnet", subnet)
+					}
+				}
+			}
+		}
+	}
+
+	// Convert map to slice
+	var interfaces []NetworkInterface
+	s.logger.Debug("Converting interface map to slice", "map_size", len(interfaceMap))
+	for _, iface := range interfaceMap {
+		// Get speed for each interface using ethtool
+		if iface.Name != "" && iface.Name != "lo" {
+			cmd := exec.CommandContext(ctx, "ethtool", iface.Name)
+			output, err := cmd.Output()
+			if err == nil {
+				// Parse speed from ethtool output
+				ethtoolLines := strings.Split(string(output), "\n")
+				for _, ethtoolLine := range ethtoolLines {
+					if strings.Contains(ethtoolLine, "Speed:") {
+						parts := strings.Fields(ethtoolLine)
+						if len(parts) >= 2 {
+							iface.Speed = parts[1]
+						}
+						break
+					}
+				}
+			}
+
+			// Determine role based on interface name or IP (simple heuristic)
+			// You can enhance this with configuration file or database lookup
+			if strings.Contains(iface.Name, "eth") || strings.Contains(iface.Name, "ens") {
+				// Default to Management for first interface, ISCSI for others
+				if iface.Name == "eth0" || iface.Name == "ens18" {
+					iface.Role = "Management"
+				} else {
+					// Check if IP is in typical iSCSI range (10.x.x.x)
+					if strings.HasPrefix(iface.IPAddress, "10.") && iface.IPAddress != "" {
+						iface.Role = "ISCSI"
+					}
+				}
+			}
+		}
+		interfaces = append(interfaces, *iface)
+	}
+
+	// If no interfaces found, return empty slice
+	if len(interfaces) == 0 {
+		s.logger.Warn("No network interfaces found")
+		return []NetworkInterface{}, nil
+	}
+
+	s.logger.Info("Listed network interfaces", "count", len(interfaces))
+	return interfaces, nil
+}