批量检索AWS ssm参数

Question

如何一次从AWS Systems Manager (参数存储)批量(或多个参数)检索参数？使用aws-sdk，下面是我编写的用于从参数存储中检索SSM参数的Node.js代码：

      const ssm = new (require('aws-sdk/clients/ssm'))()

      const getSSMKey = async params => {
          const {Parameter: {Value: APIKey}} = await ssm.getParameter(params).promise()
          return APIKey
    }

    const [param1, param2, param3] = await Promise.all([
      getSSMKey({ Name: '/data/param/PARAM1', WithDecryption: true }),
      getSSMKey({ Name: '/data/param/PARAM2', WithDecryption: true }),
      getSSMKey({ Name: '/data/param/PARAM3', WithDecryption: true })
    ])
    console.log(param1, param2, param3)

但是使用这段代码，我发送了3个获取3个参数的请求，这在大量参数的情况下效率很低。有没有办法在一个请求中检索多个参数。如果ssm.getParameters()是这样做的方法，那么请给出一个例子(特别是该方法的参数)。我试过了，但什么也没收到。

Answer 1

根据AWS document，GetParameter获取一个参数的值，而GetParameters获取多个参数的值。

它们的用法也非常相似。使用GetParameters获取多个值时，请将多个名称作为Names的列表传递，而不是将单个名称作为字符串传递给Name。

代码示例，获取名为"foo“和"bar”的参数，位于"us-west-1“区域：

const AWS = require('aws-sdk');
AWS.config.update({ region: "us-west-1" });

const SSM = require('aws-sdk/clients/ssm');
const ssm = new SSM()
const query = {
    "Names": ["foo", "bar"],
    "WithDecryption": true
}
let param = ssm.getParameters(query, (err, data) => {
    console.log('error = %o', err);
    console.log('raw data = %o', data);
})

Answer 2

最后，它对我起作用了。代码如下：

        const ssmConfig = async () => {
          const data = await ssm.getParameters({ Names: ['/data/param/PARAM1', '/data/param/PARAM2', '/bronto/rest//data/param/PARAM3'],
WithDecryption: true }).promise()
          const config = {}
          for (const i of data.Parameters) {
            if (i.Name === '/data/param/PARAM1') {
              config.param1 = i.Value
            }
            if (i.Name === '/data/param/PARAM2') {
              config.rest.clientId param2 = i.Value
            }
            if (i.Name === '/data/param/PARAM3') {
              config.param3 = i.Value
            }
          }
          return config
        }

Answer 3

这就是我从特定路径检索所有参数所做的工作。

**your SSM function  client :**
'use strict';
const SSM = require('aws-sdk/clients/ssm');
let ssmclient;
module.exports.init = () => {
    const region = process.env.REGION === undefined ? 'us-east-1' : process.env.REGION ;
    ssmclient = new SSM({region: region});
}
module.exports.getParameters = async (path) => {
    try {
        let params = {
            Path: path,
            WithDecryption: true
        };
        let allParameters = [];
        let data =  await ssmclient.getParametersByPath(params).promise();
        allParameters.push.apply(allParameters, data.Parameters);
        while(data.NextToken) {
            params.NextToken = data.NextToken;
            data =  await ssmclient.getParametersByPath(params).promise();
            allParameters.push.apply(allParameters, data.Parameters);
        }
        return allParameters;
    } catch (err) {
        return Promise.reject(err);
    }
}
calling this client:

const ssm = require("yourssmclinet");
ssm.init();
// you call only once to retrieve everything which falls under /data/param
const parameters = await getParameters("/data/param");
//from here you can fetch parameters['what ever needed'].