这里有一个aws lambda和mysql的工作示例，但我希望它能与sequelize一起工作。如何使用aws lambda？我也有身份验证的iam角色。
https://dzone.com/articles/passwordless-database-authentication-for-aws-lambd

'use strict';
const mysql = require('mysql2');
const AWS = require('aws-sdk');
// TODO use the details of your database connection
const region = 'eu-west-1';
const dbPort = 3306;
const dbUsername = 'lambda'; // the name of the database user you created in step 2
const dbName = 'lambda_test'; // the name of the database your database user is granted access to
const dbEndpoint = 'lambdatest-cluster-1.cluster-c8o7oze6xoxs.eu-west-1.rds.amazonaws.com';
module.exports.handler = (event, context, cb) => {
  var signer = new AWS.RDS.Signer();
  signer.getAuthToken({ // uses the IAM role access keys to create an authentication token
    region: region,
    hostname: dbEndpoint,
    port: dbPort,
    username: dbUsername
  }, function(err, token) {
    if (err) {
      console.log(`could not get auth token: ${err}`);
      cb(err);
    } else {
      var connection = mysql.createConnection({
        host: dbEndpoint,
        port: dbPort,
        user: dbUsername,
        password: token,
        database: dbName,
        ssl: 'Amazon RDS',
        authSwitchHandler: function (data, cb) { // modifies the authentication handler
          if (data.pluginName === 'mysql_clear_password') { // authentication token is sent in clear text but connection uses SSL encryption
            cb(null, Buffer.from(token + '\0'));
          }
        }
      });
      connection.connect();
      // TODO replace with your SQL query
      connection.query('SELECT * FROM lambda_test.test', function (err, results, fields) {
        connection.end();
        if (err) {
          console.log(`could not execute query: ${err}`);
          cb(err);
        } else {
          cb(undefined, results);
        }
      });
    }
  });
};