This topic describes how to use the ACM Nacos Go SDK in a Go program to manage configurations in Nacos, including getting, listening to, publishing, and deleting configurations.

Preparations

Common parameters

Parameter Type Description

Example code

Go format 

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() {
    //Use the values of End Point and Namespace ID on the Namespace Details page.
    var endpoint = "${endpoint}"
    var namespaceId = "${namespaceId}"

    //Use the AccessKey ID and AccessKey secret of the RAM user.
    var accessKey = "${accessKey}"
    var secretKey = "${secretKey}"


    clientConfig := constant.ClientConfig{
        //
        Endpoint:       endpoint + ":8080",
        NamespaceId:    namespaceId,
        AccessKey:      accessKey,
        SecretKey:      secretKey,
        TimeoutMs:      5 * 1000,
        ListenInterval: 30 * 1000,
    }

    configClient, err := clients.CreateConfigClient(map[string]interface{}{
        "clientConfig": clientConfig,
    })

    if err ! = nil {
        fmt.Println(err)
        return
    }

    var dataId = "com.alibaba.nacos.example.properties"
    var group = "DEFAULT_GROUP"

    //Publish the configuration.
    success, err := configClient.PublishConfig(vo.ConfigParam{
        DataId:  dataId,
        Group:   group,
        Content: "connectTimeoutInMills=3000"})

    if success {
        fmt.Println("Publish config successfully.")
    }

    time.Sleep(3 * time.Second)

    //Get the configuration.
    content, err := configClient.GetConfig(vo.ConfigParam{
        DataId: dataId,
        Group:  group})

    fmt.Println("Get config:" + content)

    //Listen to configuration changes.
    configClient.ListenConfig(vo.ConfigParam{
        DataId: dataId,
        Group:  group,
        OnChange: func(namespace, group, dataId, data string) {
            fmt.Println("ListenConfig group:" + group + ", dataId:" + dataId + ", data:" + data)
        },
    })

    //Delete the configuration.
    success, err = configClient.DeleteConfig(vo.ConfigParam{
        DataId: dataId,
        Group:  group})

    if success {
        fmt.Println("Delete config successfully.")
    }

}

More information