AWS Lambda NodeJS，无法建立外部连接

本文介绍了AWS Lambda NodeJS，无法建立外部连接的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

因此，我正在尝试做一个基本的事情:从我的AWS Lambda脚本连接到外部REST-API.该API托管假期列表.

So, I'm trying to do a basic thing: Connect to an external REST-API from my AWS Lambda script. This API hosts a list of holidays.

但是，每当我尝试执行代码时，它就会超时(达到最大lambda执行时间).

But, whenever I try to execute the code it just times out (max lambda execution time reached).

因此，我创建了此包装器函数，该函数能够处理4种不同的方式来执行 GET 请求，但是它们全部执行相同的操作.

So I created this wrapper function, that is capable of handling 4 different ways of doing GET requests, but all of them perform the same.

const request = require('request') const https = require('https') const axios = require('axios') const superagent = require('superagent') let test = (type = "") => { return new Promise((resolve, reject) => { debug("Fetching with: " + type) const d = new Date() if(type == "superagent"){ superagent.get('holidayapi.pl/v1/holidays?country=DK&year=' + d.getFullYear()) .query({ country: 'DK', year: '2019' }) .end((err, res) => { if (err) { console.log(err) reject(err) } else { console.log(res) resolve(res) } }) } else if(type == "axios"){ axios.get('holidayapi.pl/v1/holidays?country=DK&year=' + d.getFullYear()) .then(response => { debug(response) resolve(response) }) .catch(error => { console.log(error) reject(error) }) } else if(type == "https"){ const req = https.get("holidayapi.pl/v1/holidays?country=DK&year=" + d.getFullYear(), (resp) => { let data = '' // A chunk of data has been recieved. resp.on('data', (chunk) => { data += chunk }) // The whole response has been received. Print out the result. resp.on('end', () => { console.log(JSON.parse(data).explanation) resolve([]) }) }) .on('error', (e) => { debug(e) reject(e.message) }) req.end() } else if(type == "request"){ request('holidayapi.pl/v1/holidays?country=DK&year=' + d.getFullYear(), { json: true }, (err, res, body) => { debug(err) debug(res) debug(body) if (err) reject(err) else resolve(body.holidays) }) } else { reject("Mangler type") } }) } exports.connect_test = (event, context, callback) => { test(event.pathParameters.type) .then((rsp) => { callback(null, JSON.stringify(rsp, null, 2)) }) .catch((err) => { callback(null, JSON.stringify(err, null, 2)) }) }

debug 函数是console.log的映射，用于检查NODE_ENV是否为"dev".

The debug function is a map to console.log, that checks if the NODE_ENV is "dev".

推荐答案

• 我想默认的VPC可以连接互联网，因此，如果它是默认的，它就可以正常工作(只需将lambda的默认超时时间增加到合理的水平即可).
• 如果它位于VPC内，则需要为该VPC配置NAT网关/NAT实例，以使其具有Internet连接或与具有Internet访问权限的另一个VPC配对(在VPC lambda内部需要具有适当的角色和子网).
• 这可能会帮助您 aws文档