lc_veterans/app/utils/redis.go

package utils

import (
	"fmt"
	"github.com/go-redis/redis"
	"iot_manager_service/app/dao"
	"iot_manager_service/config"
	"strconv"
	"time"
)

var Redis *redis.Client

func InitRedis() error {
	cfg := config.Instance()
	addr := cfg.Redis.Host
	Redis = redis.NewClient(&redis.Options{
		Addr:         addr,
		DialTimeout:  10 * time.Second,
		ReadTimeout:  30 * time.Second,
		WriteTimeout: 30 * time.Second,
		PoolSize:     10,
		PoolTimeout:  30 * time.Second,
	})
	_, err := Redis.Ping().Result()
	if err != nil {
		return err
	}
	return nil
}

const (
	UserKey        = "user_%d"
	ModuleTypeKey  = "module_type_%d"
	ControlTypeKey = "control_type_%d"

	ControlType = "control_type"
	ModuleType  = "module_his_type"
)

func GetUserName(id int64) string {
	var name string
	key := fmt.Sprintf(UserKey, id)
	name, err := Redis.Get(key).Result()
	if err != nil {
		user := &dao.User{ID: id}
		if err := user.GetUser(); err != nil {
			fmt.Printf("GetUser err = %s \n", err)
		} else {
			name = user.Name
			Redis.Set(key, name, time.Second*10)
		}
	}
	return name
}

func GetModuleName(id int) string {
	var name string
	key := fmt.Sprintf(ModuleTypeKey, id)
	name, err := Redis.Get(key).Result()
	if err != nil {
		dict := &dao.Dict{Code: ModuleType, DictKey: strconv.Itoa(id)}
		if err := dict.GetByCodeAndKey(); err != nil {
			fmt.Printf("GetByCodeAndKey err = %d \n", err)
		} else {
			name = dict.DictValue
			Redis.Set(key, name, -1)
		}
	}
	return name
}

func GetControlType(id int) string {
	var name string
	key := fmt.Sprintf(ControlTypeKey, id)
	name, err := Redis.Get(key).Result()
	if err != nil {
		dict := &dao.Dict{Code: ControlType, DictKey: strconv.Itoa(id)}
		if err := dict.GetByCodeAndKey(); err != nil {
			fmt.Printf("GetByCodeAndKey err = %d \n", err)
		} else {
			name = dict.DictValue
			Redis.Set(key, name, -1)
		}
	}
	return name
}