如何获取 RDS 标签？答案

【问题标题】：How to get RDS tags?如何获取 RDS 标签？
【发布时间】：2019-05-05 10:28:21
【问题描述】：

我正在尝试获取 rds 实例的标签。我使用节点 js，它作为异步工作，所以我无法正确获得结果。请回复报价

补充说：一个 rds 实例可以有多个标签。我只想从 rds 实例的标签中导入某些标签。但是，实例和标签不匹配，因为它是异步工作的。

var AWS = require('aws-sdk');
var request = require("request");
AWS.config.update({region:'ap-northeast-1'});
var credentials = new AWS.SharedIniFileCredentials({profile: 'test'});
AWS.config.credentials = credentials;
var rds = new AWS.RDS();

rds.describeDBInstances(function(err, data) {
    for(var i=0; i<data.DBInstances.length; i++) {
        var instance = data.DBInstances[i];
        var clusterName = instance.DBClusterIdentifier;
        var instanceName = instance.DBInstanceIdentifier;
        var resourceName = 'arn:aws:rds:ap-northeast-1:231497262134:db:' + instanceName;
        var params = {
            ResourceName: resourceName,
        };

        rds.listTagsForResource(params, function(err, data) {
            var serviceTag = ''
            data.TagList.forEach((tag) => {
                if (tag.Key.toLowerCase() === 'service' && tag.Value.length > 0) {
                    serviceTag = tag.Value;
                }        
            })
            console.log(instanceName, serviceTag)
        })
    }
})

【问题讨论】：

代码运行了吗？ data 响应是什么？有错误吗？请编辑您的问题以提供更多信息。
不要忽略错误，访问数据前检查错误！

标签： node.js amazon-web-services amazon-rds

【解决方案1】：

我已经用 async 和 await 语法修复了它。感谢 cmets。

var AWS = require('aws-sdk');
var request = require("request");
AWS.config.update({region:'ap-northeast-1'});
var credentials = new AWS.SharedIniFileCredentials({profile: 'test'});
AWS.config.credentials = credentials;
var rds = new AWS.RDS();


rds.describeDBInstances(async (err, data) => {
    for(var i=0; i<data.DBInstances.length; i++) {
        var instance = data.DBInstances[i];
        var clusterName = instance.DBClusterIdentifier;
        var instanceName = instance.DBInstanceIdentifier;
        var resourceName = 'arn:aws:rds:ap-northeast-1:231497262134:db:' + instanceName;


        let params = {
            ResourceName: resourceName,
        };

        let tags = await rds.listTagsForResource(params).promise();
        var serviceTag = ''
        tags.TagList.forEach((tag) => {
            if (tag.Key.toLowerCase() === 'service' && tag.Value.length > 0) {
                serviceTag = tag.Value;
            }        
        })


        console.log(clusterName + ',' + instanceName + ',' + serviceTag)
    }
})

【讨论】：