AWS Code Sample


This Lambda function is invoked to customize an email or SMS message when the service requires an app to send a verification code to the user.

// Copyright 2010-2019, Inc. or its affiliates. All Rights Reserved. // // This file is licensed under the Apache License, Version 2.0 (the "License"). // You may not use this file except in compliance with the License. A copy of // the License is located at // // // // This file is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR // CONDITIONS OF ANY KIND, either express or implied. See the License for the // specific language governing permissions and limitations under the License. exports.handler = (event, context, callback) => { // if(event.userPoolId === "theSpecialUserPool") { // Identify why was this function invoked if(event.triggerSource === "CustomMessage_SignUp") { // Ensure that your message contains event.request.codeParameter. This is the placeholder for code that will be sent event.response.smsMessage = "Welcome to the service. Your confirmation code is " + event.request.codeParameter; event.response.emailSubject = "Welcome to the service"; event.response.emailMessage = "Thank you for signing up. " + event.request.codeParameter + " is your verification code"; } // Create custom message for other events } // Customize messages for other user pools // Return to Amazon Cognito callback(null, event); };

Sample Details

Service: cognito-idp

Last tested: 2019-01-30

Author: AWS

Type: full-example

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