将节点请求模块与 AWS Lambda 和 API 网关结合使用

Using the Node Request module with AWS Lambda and API Gateway

这个 lambda 函数有效:

exports.handler = function(event, context, callback) {
  const done = (err, res, func) => callback(null, {
    statusCode: '200',
    body: res,
    headers: { 'Content-Type': 'application/json' },
  })

  done(null, 'works'))
}

我可以访问 API 网关端点并接收响应消息,'works'

但是,当我添加请求调用(POST向 Slack 发送消息)时,如下所示:

const request = require('request')
const moment = require('moment-timezone')

exports.handler = function(event, context, callback) {
  // the json object is built following these docs:
  // https://api.slack.com/docs/message-attachments
  const SLACK_WEB_HOOK_URL = process.env.SLACK_WEB_HOOK_URL
  const uri = SLACK_WEB_HOOK_URL
  const method = 'POST'
  const options = {
    json,
    uri,
    method,
  }

  const slack = (opts) => {
    request.post(opts, (err, response, body) => {
      if (response.statusCode < 300) {
        return 'Success!'
      } else {
        return 'Err!'
      }
    })
  }

  const done = (err, res, func) => callback(null, {
    statusCode: '200',
    body: res,
    headers: { 'Content-Type': 'application/json' },
  })

  done(null, slack(options))
}

当我到达 API 终点时服务器挂起...

我收到 Task timed out after 10.00 seconds 错误:

{
  "errorMessage": "2017-06-23T16:41:21.483Z c385e32e-5832-11e7-8c4f-673b524cf783 Task timed out after 10.00 seconds"
}

但是我的 Slack POST 请求已发送,我在频道中看到了消息。

如何发送 POST 请求,然后等待它到 return,然后使用自定义响应消息退出 lambda 函数?

感谢您的帮助!

将回调放入post方法的回调中

request.post(opts, (err, response, body) => {
    if (response.statusCode < 300) {
        return callback(null, {
            statusCode: '200',
            body: res,
            headers: { 'Content-Type': 'application/json' },
        });
    } else {
        return callback(err);
    }
});