使用NodeJS承诺在DynamoDB中创建记录

Question

我想使用NodeJS函数在dynamoDB中创建新记录，但是在我需要使用Stripe API创建事务并将信息存储在DynamoDB中之后。

我编写了这些代码行，但不会在dynamo中插入任何内容。有什么想法吗？

import * as Stripe from "stripe";
const randomBytes = require('crypto').randomBytes;

const AWS = require('aws-sdk');

import { SECRET_API_KEY } from "../config";

/** Config */
const stripe = new Stripe(SECRET_API_KEY);

const ddb = new AWS.DynamoDB.DocumentClient();

export async function createCustomerAndSubscribeToPlan(
  stripeToken: string,
  email: string,
  productPlan: string
): Promise<any> {
  // create a customer
  const customer = await stripe.customers.create({
    email: email,
    source: stripeToken
  });


  // retrieve created customer id to add customer to subscription plan
  const customerId = customer.id;
  // create a subscription for the newly created customer
  const subscription = await stripe.subscriptions.create({
    customer: customerId,
    items: [{ plan: productPlan }]
  });

  /** Insert inside S3 Storage the user and validity */
  const record = await recordSub(stripeToken, email, productPlan);

  return subscription;
}

function recordSub(stripeToken, email, productPlan) {

  const subrisctionId = toUrlString(randomBytes(16));
  console.log('Putting inside db ' + subrisctionId);
  return ddb.put({
      TableName: 'OG_SUBRISCPTIONS',
      Item: {
          OG_SUBRISCPTIONS_ID: subrisctionId,
          ProductPlan: productPlan,
          RequestTime: new Date().toISOString()
      }
});
}

function toUrlString(buffer) {
    return buffer.toString('base64')
        .replace(/\+/g, '-')
        .replace(/\//g, '_')
        .replace(/=/g, '');
}

Answer 1

问题是recordSub没有返回承诺。您需要添加.promise()以使DocumentClient做出承诺：

return ddb.put({
      TableName: 'OG_SUBRISCPTIONS',
      Item: {
          OG_SUBRISCPTIONS_ID: subrisctionId,
          ProductPlan: productPlan,
          RequestTime: new Date().toISOString()
      }
}).promise();