初始化项目

pkg/device/deviceid.go

@@ -0,0 +1,40 @@
+package device
+
+import (
+	"net"
+	"os"
+	"strings"
+)
+
+// GetDeviceID 返回本机原始唯一ID（Linux /etc/machine-id 或 hostname+MAC）
+func GetDeviceID() string {
+	// 尝试读取 Linux /etc/machine-id
+	if data, err := os.ReadFile("/etc/machine-id"); err == nil {
+		s := strings.TrimSpace(string(data))
+		if s != "" {
+			return s
+		}
+	}
+
+	// fallback: hostname + first non零MAC
+	hn, _ := os.Hostname()
+	mac := getFirstMac()
+	return hn + "|" + mac
+}
+
+func getFirstMac() string {
+	ifaces, err := net.Interfaces()
+	if err != nil {
+		return ""
+	}
+	for _, it := range ifaces {
+		if len(it.HardwareAddr) == 0 {
+			continue
+		}
+		mac := it.HardwareAddr.String()
+		if mac != "" && mac != "00:00:00:00:00:00" {
+			return mac
+		}
+	}
+	return ""
+}