standard/nacos/main.go

package main

import (
	"fmt"
	"log"
	"strings"

	"github.com/nacos-group/nacos-sdk-go/clients"
	"github.com/nacos-group/nacos-sdk-go/common/constant"
	"github.com/nacos-group/nacos-sdk-go/vo"
	"github.com/spf13/viper"
)

var (
	defaultConfig *viper.Viper
	nacosIp       string
	nacosPort     uint64
	nacosDataId   string
	nacosGroup    string
)

func initConfig() *viper.Viper {
	nacosIp = "127.0.0.1"
	nacosPort = 8848
	nacosDataId = "dev001"
	nacosGroup = "DEFAULT_GROUP"

	defaultConfig = viper.New()
	defaultConfig.SetConfigType("toml")
	//配置模型
	serverConfigs := []constant.ServerConfig{
		{
			IpAddr: nacosIp,
			Port: nacosPort,
		},
	}

	//客户端
	nacosClient, err := clients.NewConfigClient(
		vo.NacosClientParam{
			ClientConfig:  &constant.ClientConfig{TimeoutMs: 5000,NamespaceId:"36a76206-1dec-4fb7-aa7f-dc49314e7963",LogLevel:"debug"},
			//ClientConfig:  &constant.ClientConfig{TimeoutMs: 5000},
			ServerConfigs: serverConfigs,
		},
	)
	if err != nil {
		log.Fatal("nacos初始化错误:", err)
	}

	content, err := nacosClient.GetConfig(vo.ConfigParam{DataId: nacosDataId, Group: nacosGroup})
	if err != nil {
		log.Fatalln("nacos读取配置错误:" + content)
	}

	err = defaultConfig.ReadConfig(strings.NewReader(content))
	if err != nil {
		log.Fatalln("Viper解析配置失败:", err)
	}

	//go func() {
	//	time.Sleep(time.Second * 10)
	//	err = nacosClient.ListenConfig(vo.ConfigParam{
	//		DataId: nacosDataId,
	//		Group:  nacosGroup,
	//		OnChange: func(namespace, group, dataId, data string) {
	//			fmt.Println("config changed group:" + group + ", dataId:" + dataId + ", content:" + data)
	//			err = defaultConfig.ReadConfig(strings.NewReader(data))
	//			if err != nil {
	//				log.Fatalln("Viper解析配置失败:", err)
	//			}
	//		},
	//	})
	//}()

	return defaultConfig
}

func GetConfig() *viper.Viper {
	if defaultConfig == nil {
		defaultConfig = initConfig()
	}
	return defaultConfig
}

func main() {
	//for {
		host := GetConfig().GetString("server.port")
		fmt.Println("consul===", host)
		//time.Sleep(time.Second * 10)
	//}
}