Question

我正在使用lambda触发器在AWS Cognito中开发自定义身份验证流。

我将aws给出的示例代码用于lambda触发器DefineAuthChallenge_Authentication，CreateAuthChallenge_Authentication和VerifyAuthChallenge_Authentication，甚至在此答案中进行了解释， AWS Cognito User Pool without a password

但是当我从前端登录并放大时说 {code: "InvalidLambdaResponseException", name: "InvalidLambdaResponseException", message: "Unrecognizable lambda output"}

在调用“创建身份验证”质询时定义“身份验证”质询后，质询不在event.request.session中，它是一个空数组。 event.response中的ChallengeName属性如下所示，

triggerSource: 'CreateAuthChallenge_Authentication',
request: 
{ userAttributes: 
{ sub: 'xxxxx-xxxxx-xxxx',
'cognito:user_status': 'CONFIRMED',
name: 'sala',
phone_number_verified: 'true',
'cognito:phone_number_alias': '+947xxxxxxxxx',
phone_number: '+947xxxxxxxxx' },
challengeName: 'CUSTOM_CHALLENGE',
session: [] },

以下是我的定义身份验证挑战， `

exports.handler = async event => {
  if (
    event.request.session &&
    event.request.session.length >= 3 &&
    event.request.session.slice(-1)[0].challengeResult === false
  ) {
    // The user provided a wrong answer 3 times; fail auth
    event.response.issueTokens = false;
    event.response.failAuthentication = true;
  } else if (
    event.request.session &&
    event.request.session.length &&
    event.request.session.slice(-1)[0].challengeResult === true
  ) {
    // The user provided the right answer; succeed auth
    event.response.issueTokens = true;
    event.response.failAuthentication = false;
  } else {
    // The user did not provide a correct answer yet; present challenge
    event.response.issueTokens = false;
    event.response.failAuthentication = false;
    event.response.challengeName = 'CUSTOM_CHALLENGE';
  }
  return event;
};

InvalidLambdaResponseException-使用amplify登录无密码时无法识别的lambda输出

0 个答案: