feat: 网元直连接口补充AMF/SMF/MME/IMS

src/modules/network_element/fetch_link/smf.go

@@ -7,9 +7,40 @@ import (
 
 	"be.ems/src/framework/logger"
 	"be.ems/src/framework/utils/fetch"
+	"be.ems/src/framework/utils/parse"
 	"be.ems/src/modules/network_element/model"
 )
 
+// SMFSubNum SMF在线订阅用户数量 只含5G用户数据
+//
+// 返回结果 0
+func SMFSubNum(neInfo model.NeInfo) (int64, error) {
+	neUrl := fmt.Sprintf("http://%s:%d/api/rest/ueManagement/v1/elementType/smf/objectType/ueNum", neInfo.IP, neInfo.Port)
+	resBytes, err := fetch.Get(neUrl, nil, 60_000)
+	if err != nil {
+		errStr := err.Error()
+		logger.Warnf("SMFSubNum Get \"%s\"", neUrl)
+		logger.Errorf("SMFSubNum %s", errStr)
+		return 0, fmt.Errorf("NeService SMF API Error")
+	}
+	// 序列化结果 {"data":{"ueNum":0}}
+	var resData map[string]any
+	err = json.Unmarshal(resBytes, &resData)
+	if err != nil {
+		logger.Errorf("IMSUeSession Unmarshal %s", err.Error())
+		return 0, err
+	}
+
+	// 固定返回字段，方便前端解析
+	var ueNum int64 = 0
+	if v, ok := resData["data"]; ok && v != nil {
+		if num := v.(map[string]any)["ueNum"]; num != nil {
+			ueNum = parse.Number(num)
+		}
+	}
+	return ueNum, nil
+}
+
 // SMFSubInfoList SMF在线订阅用户列表信息
 //
 // 查询参数 {"imsi":"360000100000130","msisdn":"8612300000130","upstate":"Inactive","pageNum":"1"}