Promise 未在 https 调用中解析

Question

我正在 API 网关后面编写一个 AWS Lambda 函数，它使用 Facebook 和我们的应用程序 ID 验证令牌，这样我们就可以确认用户的身份，以便他可以删除他的资源。用户从 Facebook 登录名发送他的用户 ID 和令牌，我检查令牌是否有效以及是否属于同一用户。在实现中我使用了 promises 但问题是第一个 then 根本没有执行。我首先调用 getFacebookAccessToken，这样我就可以调用 API 并在响应中解决或拒绝，但代码没有达到这一点。这是函数：

'use strict';

const https = require('https');
const querystring = require('querystring');

exports.handler = (event, context, callback) => {

 if (typeof event.body.token === 'undefined' || event.body.token === '') {

  context.succeed({
   "result":"false",
   "message": `InputError: token is not defined or it is empty`
  });
  return;
 }
 if (typeof event.body.userId === 'undefined' || event.body.userId === '') {

  context.succeed({
   "result":"false",
   "message": `InputError: userId is not defined or it is empty`
  });
  return;
 }

 getFacebookAccessToken()
  .then((appAccessToken) => {

   return checkFacebookId(appAccessToken, event.body.token, event.body.userId);
  })
  .then((result) => {

   console.log('Done');
   context.succeed(result);
  })
  .catch((error) => {

   context.succeed(error);
  });
};

let checkFacebookId = (appAccessToken, token, facebookId) => {

 return new Promise((resolve, reject) => {

  let params = {
   input_token: token,
   access_token: appAccessToken
  };

  let requestParams = querystring.stringify(params);

  let configOptions = {
   method: "get",
   hostname: "graph.facebook.com",
   path: "/debug_token?" + requestParams
  };

  let request = https.request(configOptions, function (result) {

   let response = "";
   result.setEncoding('utf8');
   result.on('data', function (chunk) {

    response += chunk;
   });

   result.on('end', function () {

    const fbResponse = JSON.parse(response);

    if (result.statusCode.toString() === '200') {

     console.log(`Validating facebook token: OK`);

     if (typeof fbResponse.data === 'undefined') {
      reject({
       "result": "false",
       "message": "Token not valid"
      });
     }
     if (fbResponse.data.user_id === facebookId) {
      resolve({
       "result": "true"
      });
     } else {
      reject({
       "result": "false",
       "message": "Token not valid"
      });
     }
    }
    else {

     reject({
      "result": "false",
      "error": {
       "Message": `Failed validating facebook user access token`,
       "statusCode": result.statusCode,
       "token_valid": fbResponse
      }
     });
    }
   });
  });

  request.on('error', function (error) {
   reject({
    "result": "false",
    "message": "Error in Facebook",
    "error": error
   });
  });

  console.log(`Validating facebook token: PENDING`);
  request.end();
 });
};

let getFacebookAccessToken = () => {

 return new Promise((resolve, reject) => {

  let params = {
   client_id: event.stage.fb_app_id,
   client_secret: event.stage.fb_app_secret,
   grant_type: "client_credentials"
  };

  let requestParams = querystring.stringify(params);

  let configOptions = {
   method: "get",
   hostname: "graph.facebook.com",
   path: "/oauth/access_token?" + requestParams
  };
  let request = https.request(configOptions, function (result) {

   let responseData = "";
   result.setEncoding('utf8');
   result.on('data', function (chunk) {

    responseData += chunk;
   });

   result.on('end', function () {
    console.log(result);
    if (result.statusCode.toString() === '200') {

     console.log(`Getting Facebook Access Token: OK`);
     resolve(JSON.parse(responseData).access_token);
    }
    else {

     reject({
      "result": "false",
      "error": {
       "Message": `Failed getting facebook access token`,
       "statusCode": result.statusCode
      }
     });
    }
   });
  });

  request.on('error', function (error) {
   reject({
    "result": "false",
    "message": "Error in Facebook",
    "error": error
   });
  });

  console.log(`Getting Facebook Access Token: PENDING`);
  request.end();
 });
};

Answer 1

承诺中存在 JavaScript 错误。 event.stage.fb_app_id 和 secret 不在函数范围内，这很明显，但由于 catch，错误是无声的，我得到一个空对象。

Promise 未在 https 调用中解析

Promise not resolving in https call

node.js

lambda

https

resolve