Aws lambda ECONREFUNCE 127.0.0.1:5432 RDS，Postgres

我被这个错误困扰了很长一段时间，我想看看是否有人知道该怎么做

我正在使用Lambda创建一个端点，我希望在命中该端点时，首先将一个契约插入到运行在RDS上的postgres db中，然后将消息的内容插入到同一个数据库中（并使用SES发送电子邮件，但我已经找到了这一部分）。我想做的是将一个新的postgres池传递到下面的send message函数中，但每次我这样做，并尝试访问数据库时，我都会得到一个

错误：connect econnrefered127.0.0.1:5432
在TCPConnectWrap.afterConnect[as oncomplete]（net.js:1141:16）

。这是我脱机运行serverless的时候。初始SQL查询运行，但第二个查询不运行

我非常感谢您的指导，我已经在下面粘贴了相关的代码片段。这是我第一次用JavaScript做任何事情，所以这可能是一个非常愚蠢的问题

contracts.js

const db = require('../db_connect');
const messages = require('./messages');

//POST endpoint to create a generic contract, it's worth keeping in mind that whenever we create a contract, it will always default to false for field isFinished
module.exports.createContract = (event, context, callback) => {
    context.callbackWaitsForEmptyEventLoop = false;

    const reqBody = JSON.parse(event.body);
    const influencerID = reqBody.influencerID;
    const buyerID = reqBody.buyerID;
    const monetaryValue = reqBody.monetaryValue;
    const charityID = reqBody.charityID;

    db.query('INSERT INTO contracts(influencer_id, buyer_id, monetary_value, charity_id, is_finished) VALUES($1, $2, $3, $4, false)', [influencerID, buyerID, monetaryValue, charityID])
        .then(res => {
            callback(null, {
                statusCode: 200,
                body: 'successfully inserted contract'
            })
            messages.sendMessage(db, reqBody, buyerID, influencerID)
        })
         .catch(e => {
            console.log(e);
            callback(null, {
                statusCode: e.statusCode || 500,
                body: 'Error:' + e
            });
        }); 

};

var dotenv = require('dotenv').config();
var aws = require('aws-sdk')
const db = require('../db_connect');


function sendMessage(reqBody, senderID, receiverID) {

  const messageBody = reqBody.messageBody;
  const timestamp = Date.now();

  var receiverEmail;

  db.query("SELECT e_mail FROM users WHERE user_id = $1", [receiverID])
  .then(res => {
    console.log(res)
    receiverEmail = res.rows[0]
    console.log("this is the new email --> ", receiverEmail)
  })
  .catch(e =>{
    throw console.error(e);
  })
}

messages.js

const db = require('../db_connect');
const messages = require('./messages');

//POST endpoint to create a generic contract, it's worth keeping in mind that whenever we create a contract, it will always default to false for field isFinished
module.exports.createContract = (event, context, callback) => {
    context.callbackWaitsForEmptyEventLoop = false;

    const reqBody = JSON.parse(event.body);
    const influencerID = reqBody.influencerID;
    const buyerID = reqBody.buyerID;
    const monetaryValue = reqBody.monetaryValue;
    const charityID = reqBody.charityID;

    db.query('INSERT INTO contracts(influencer_id, buyer_id, monetary_value, charity_id, is_finished) VALUES($1, $2, $3, $4, false)', [influencerID, buyerID, monetaryValue, charityID])
        .then(res => {
            callback(null, {
                statusCode: 200,
                body: 'successfully inserted contract'
            })
            messages.sendMessage(db, reqBody, buyerID, influencerID)
        })
         .catch(e => {
            console.log(e);
            callback(null, {
                statusCode: e.statusCode || 500,
                body: 'Error:' + e
            });
        }); 

};

var dotenv = require('dotenv').config();
var aws = require('aws-sdk')
const db = require('../db_connect');


function sendMessage(reqBody, senderID, receiverID) {

  const messageBody = reqBody.messageBody;
  const timestamp = Date.now();

  var receiverEmail;

  db.query("SELECT e_mail FROM users WHERE user_id = $1", [receiverID])
  .then(res => {
    console.log(res)
    receiverEmail = res.rows[0]
    console.log("this is the new email --> ", receiverEmail)
  })
  .catch(e =>{
    throw console.error(e);
  })
}

---

最终，这个错误是因为您试图连接到代码运行的同一台机器上的PostgreSQL实例。很明显，在Lambda上这不会出现。你在哪里托管数据库？@stdunbar，我在RDS上托管数据库你在哪里创建与数据库的连接？您需要在某处指定主机名-它必须默认为localhost，而不是您的RDS。我知道它一直在影响RDS db，因为我有其他正常工作的端点。我将检查它是否在任何地方被覆盖，尽管我得到了纠正，我的端点以前工作过，但现在它们都有相同的错误！最终，这个错误是因为您试图连接到代码运行的同一台机器上的PostgreSQL实例。很明显，在Lambda上这不会出现。你在哪里托管数据库？@stdunbar，我在RDS上托管数据库你在哪里创建与数据库的连接？您需要在某处指定主机名-它必须默认为localhost，而不是您的RDS。我知道它一直在影响RDS db，因为我有其他正常工作的端点。我将检查它是否在任何地方被覆盖，尽管我得到了纠正，我的端点以前工作过，但现在它们都有相同的错误！