配置中心之Nacos简介,使用及Go简单应用

docker run --name nacos-standalone -e MODE=standalone -e JVM_XMS=512m -e JVM_MAX=512m -e JVM_XMN=256m -p 8848:8848 -d nacos/nacos-server:latest

go get -u github.com/nacos-group/nacos-sdk-go

package main

import (
	"fmt"
	"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"
	"time"
)

func main() {
	sc := []constant.ServerConfig{{
		IpAddr: "192.168.0.4",
		Port:   8848,
	}}

	cc := constant.ClientConfig{
		NamespaceId:         "e6295280-8bc8-424e-b9c6-2eb61da8a189", // 如果需要支持多namespace，我们可以场景多个client,它们有不同的NamespaceId。当namespace是public时，此处填空字符串。
		TimeoutMs:           5000,
		NotLoadCacheAtStart: true,
		LogDir:              "log",
		CacheDir:            "cache",
		RotateTime:          "1h",
		MaxAge:              3,
		LogLevel:            "debug",
	}

	configClient, err := clients.CreateConfigClient(map[string]interface{}{
		"serverConfigs": sc,
		"clientConfig":  cc,
	})
	if err != nil {
		panic(err)
	}

	content, err := configClient.GetConfig(vo.ConfigParam{
		DataId: "user-web.yaml",
		Group:  "dev",
	})

	if err != nil {
		panic(err)
	}
	fmt.Println(content) //字符串 - yaml
	err = configClient.ListenConfig(vo.ConfigParam{
		DataId: "user-web.yaml",
		Group:  "dev",
		OnChange: func(namespace, group, dataId, data string) {
			fmt.Println("配置文件发生了变化...")
			fmt.Println("group:" + group + ", dataId:" + dataId + ", data:" + data)
		},
	})

	time.Sleep(300 * time.Second)
}

{
  "name": "user-web",
  "port": 9001,
  "user_srv": {
    "host": "192.168.0.84",
    "port": 50051,
    "name": "user_srv"
  },
  "redis": {
    "host": "47.94.149.143",
    "password": "wunai.18",
    "port": 6379,
    "db": 0,
    "expire": 3000
  },
  "jwt": {
    "key": "!42&%MFFezZmB8a^RhUiGa$l5g2z65HZ"
  },
  "ali_sms": {
    "key": "LTAI4GAdvAHSnQGAuiu2vicL",
    "secrect": "ZfneNg1Sa6bEpbVHlP16nCTmT9dInh"
  },
  "consul": {
    "host": "192.168.0.4",
    "port": 8500
  }
}