AWS-Data未从Lambda保存到DynamoDB

Question

我的任务是使用lambda向DynamoDB添加新的Cognito用户。我已经得到了一个现有的AWS Cognito用户池。到目前为止，我已经编写了一个lambda函数&用demo数据测试它，以便它可以将数据保存到Dynamodb中。但在测试时，它不会将我的数据保存到数据库中。为了获得指导，我一直在跟踪这篇文章。在这篇文章中说，在测试之后，我的DynamoDB表应该被填充。

const aws = require('aws-sdk');
const ddb = new aws.DynamoDB.DocumentClient({region: 'us-east-2'});


exports.handler = async (event, context) => {
    console.log(event);

    let date = new Date();

    const tableName = 'User';
    const region = 'us-west-2';
  
    
    console.log("table=" + tableName + " -- region=" + region);

    aws.config.update({region});


       
        let ddbParams = {
            Item: {
                'user_name': {S: event.request.userAttributes.user_name},
                'first_name': {S: event.request.userAttributes.first_name},
                'last_name': {S: event.request.userAttributes.last_name},
                'email_address': {S: event.request.userAttributes.email_address},
                'mobile_phone': {S: event.request.userAttributes.mobile_phone},
                'password': {S: event.request.userAttributes.password},
                'referred_by': {S: event.request.userAttributes.referred_by},
                'createdAt': {S: date.toISOString()}
            },
            TableName: tableName
        };

       
        try {
            await ddb.putItem(ddbParams).promise()
            console.log("Success");
        } catch (err) {
            console.log("Error", err);
        }

        console.log("Success: Everything executed correctly");
        context.done(null, event);


};

{
  "userName": "Proteeti Prova",
  "request": {
    "userAttributes": {
      "user_name": "Proteeti13",
      "first_name": "Proteeti",
      "last_name": "Prova",
      "email_address": "[e-mail]",
      "mobile_phone": "7777777",
      "password": "ironman",
      "referred_by": "tony stark"
    }
  },
  "response": {}
}

日志输出

START.Emit(/var/runtime/node_modules/AWS-SDK/lib/request.js:688:14)在请求时。Transition(/var/runtime/node_modules/AWS-SDK/lib/request.js:22:10)在AcceptorStateMachine.runto(/var/runtime/node_modules/AWS-SDK/lib/state_machine.js:14:12)在请求时/var/runtime/node_modules/AWS-SDK/lib/state_machine.js:26:10.在请求时(/var/runtime/node_modules/AWS-SDK/lib/state_machine.js:38:9)在请求时modules/aws-sdk/lib/request.js:690:12)在request.calllisteners(/var/runtime/node_modules/aws-sdk/lib/sequential_executor.js:116:18)消息：“reque未找到sted资源“，代码：”ResourceNotFoundException“，时间:2020-10-23T07:59:49.233Z,
RequestId:'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx',
StatusCode:400，可重试：false,retrydelay:37.83355253768394}：89 MB初始化持续时间：391.58 ms

Answer 1

因此，根据AWS文档，ResourceNotFoundException的意思是：

您应该再次检查您的表是否存在，以及您是否使用了正确的访问键。此外，为什么要将us-east-2作为区域创建DynamoDB对象，只是为了将其在lambda中更改为us-West-2。尝试立即用正确的区域启动实例。