node.js - AWS Cognito 用户池的事件触发器对象

Question

我想为我的 AWS Cognito 用户池中的新注册用户制作一条自定义验证消息

为此，我尝试将 Lamda 函数与“自定义消息”触发器相关联。

但是，我无法找到自定义消息事件的确切格式，无法创建我的 lambda 函数。

我想出的lambda函数是

 exports.handler = function(event, context) {
    // 
    if(event.userPoolId === "us-east-t9....") {

        // Identify why was this function invoked
        if(event.triggerSource === "RegisterUser") {
            // This Lambda function was invoked because a new user signed up to the user-pool "theRequiredUserPool"
            // Ensure that your message contains event.request.codeParameter, this is the place holder for code that will be sent.
                        var link = "https://.....confirm_user.html?username="+ event.userName + "&code=" + event.request.codeParameter;
            var message = "Thank you for signing up. Your confirmation code is " + event.request.codeParameter;
            message+= " Click <a href='"+link+"'>here to finish your registatration!";
            event.response.emailSubject = "Welcome to the service";
            event.response.emailMessage = message;

        }
        // Create custom message for other events
    }
    // Customize messages for other user pools


    // Return result to Cognito
    context.done(null, event);
}

当我在 Lambda 控制台中“测试”我的函数时，它可以工作，但那是因为我是根据我在文档中找到的唯一线索，针对我自己创建的事件对象对其进行测试:

{  "version": 1,
  "triggerSource": "RegisterUser/ResendCode/ForgotPassword/VerifyUserAttribute",
  "region": "<region>",
  "userPoolId": "<userPoolId>",
  "userName": "<userName>",
  "callerContext": {
      "awsSdk": "<calling aws sdk with version>",
      "clientId": "<apps client id>",
      ...
  },
  "request": {
      "userAttributes": {
          "phone_verified": true/false,
          "email_verified": true/false,
          ... (all custom attributes)
      },
      "codeParameter": "{code}"
  },
  "response": {
      "smsMessage": "<custom message to be sent in the message with code parameter>"
      "emailMessage": "<custom message to be sent in the message with code parameter>"
      "emailSubject": "<custom email subject>"
  }
}

来自 https://docs.aws.amazon.com/cognito/latest/developerguide/cognito-user-identity-pools-working-with-aws-lambda-triggers.html

我需要比这更坚固的东西。我无法让我的功能正常工作，我不知道从哪里开始。如果我不知道在事件对象中期望什么，我该如何实现 lambda 函数？ “自定义消息”事件是否有任何规范？

更新:现在，自 2016 年 7 月 29 日起，Amazon 用户池已结束测试版，我不再遇到此问题。

Answer 1

似乎之前的文档中有错误。您能否尝试使用 triggerSource 名称作为“CustomMessage_SignUp”。您还可以查看示例的更新文档。