从 Amazon DynamoDB 获取数据时遇到问题

Trouble getting data from Amazon DynamoDB

我在从 DynamoDB table 获取所有项目时遇到一些问题。我正在按照 AWS GitHub repo 中的示例进行操作。这是我的代码

import {APIGatewayProxyEventV2, APIGatewayProxyResultV2}  from 'aws-lambda';
import {DynamoDB} from 'aws-sdk'

const dynamoClient = new DynamoDB.DocumentClient();

export async function main(
    event: APIGatewayProxyEventV2,
): Promise<APIGatewayProxyResultV2> {
    console.log('event ', JSON.stringify(event, null, 2));
    const tableName: string = process.env.TABLE_NAME || ""
    const requesterUserGroup = event.pathParameters?.userGroup || ""
    console.log(`Table Name: ${tableName}`)
    console.log(`User group: ${requesterUserGroup}`)

    if(tableName.length == 0) return sendError("No table name provided", 500)

    if(requesterUserGroup.length == 0) return sendError("Requester user group is empty", 400)

    try {
        const params = {
            TableName: tableName
        };
        const response = await dynamoClient.scan(params)
        // console.log(`response: ${response} `)
        return sendSuccess(response.Items)

    }catch (dbError){
        console.log(dbError)
        return sendError(dbError, 500)
    }
}

function sendSuccess(message: any): APIGatewayProxyResultV2 {
    return {
        statusCode: 200,
        body: JSON.stringify({ message })
    }
}

function sendError(message: string, statusCode: number): APIGatewayProxyResultV2 {
    return {
        statusCode: statusCode,
        body: JSON.stringify({ message })
    }
}

这是我从中得到的回复

{
  "statusCode": 200,
  "body": "{}"
}

我已经仔细检查了 table 名称并且我在 table 中有项目(1000 项!)。

问题:为什么我没有从 table 获得任何物品?

您错过了 .promise(),因此在请求完成之前不会等待。

const response = await dynamoClient.scan(params).promise();