重新整理物联网服务，分离业务逻辑。

iot/Sentinel/app/utils/utils.go

@@ -0,0 +1,100 @@
+package utils
+
+import (
+	"fmt"
+	"net"
+	"os"
+	"runtime"
+
+	"github.com/shirou/gopsutil/v3/cpu"
+	"github.com/shirou/gopsutil/v3/disk"
+	"github.com/shirou/gopsutil/v3/mem"
+)
+
+func GetLocalIP() string {
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		return ""
+	}
+	for _, iface := range ifaces {
+		if iface.Flags&net.FlagUp == 0 {
+			continue // 接口未启用
+		}
+		if iface.Flags&net.FlagLoopback != 0 {
+			continue // 忽略回环
+		}
+		addrs, err := iface.Addrs()
+		if err != nil {
+			continue
+		}
+		for _, addr := range addrs {
+			var ip net.IP
+			switch v := addr.(type) {
+			case *net.IPNet:
+				ip = v.IP
+			case *net.IPAddr:
+				ip = v.IP
+			}
+			if ip == nil || ip.IsLoopback() {
+				continue
+			}
+			ip = ip.To4()
+			if ip == nil {
+				continue
+			}
+			return ip.String()
+		}
+	}
+	return ""
+}
+
+func GetHostname() string {
+	name, err := os.Hostname()
+	if err != nil {
+		return ""
+	}
+	return name
+}
+func GetMacAddress() string {
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		return ""
+	}
+	for _, iface := range ifaces {
+		if iface.Flags&net.FlagUp == 0 || iface.Flags&net.FlagLoopback != 0 {
+			continue
+		}
+		mac := iface.HardwareAddr.String()
+		if mac != "" {
+			return mac
+		}
+	}
+	return ""
+}
+
+func GetOSInfo() string {
+	return runtime.GOOS // windows, linux, darwin
+}
+func GetCPUInfo() string {
+	info, err := cpu.Info()
+	if err != nil || len(info) == 0 {
+		return ""
+	}
+	return info[0].ModelName
+}
+
+func GetMemory() string {
+	v, err := mem.VirtualMemory()
+	if err != nil {
+		return ""
+	}
+	return fmt.Sprintf("%dMB", v.Total/1024/1024)
+}
+
+func GetDisk() string {
+	usage, err := disk.Usage("/")
+	if err != nil {
+		return ""
+	}
+	return fmt.Sprintf("%dGB", usage.Total/1024/1024/1024)
+}