Book Image

Hands-On Chatbot Development with Alexa Skills and Amazon Lex

By : Sam Williams
Book Image

Hands-On Chatbot Development with Alexa Skills and Amazon Lex

By: Sam Williams

Overview of this book

Have you ever wondered how Alexa apps are made, how voice-enabled technologies work, or how chatbots function? And why tech giants such as Amazon and Google are investing in voice technologies? A better question is: why should I start developing on these platforms? Hands-On Chatbot Development with Alexa Skills and Amazon Lex covers all features of the Alexa Skills kit with real-world examples that help you develop skills to integrate Echo and chatbots into Facebook, Slack, and Twilio with the Amazon Lex platform. The book starts with teaching you how to set up your local environment and AWS CLI so that you can automate the process of uploading AWS Lambda from your local machine. You will then learn to develop Alexa Skills and Lex chatbots using Lambda functions to control functionality. Once you’ve come to grips with this, you will learn to create increasingly complex chatbots, integrate Amazon S3, and change the way Alexa talks to the user. In the concluding chapters, we shift our focus to Amazon Lex and messaging chatbots. We will explore Alexa, learn about DynamoDB databases, and add cards to user conversations. By the end of this book, you will have explored a full set of technologies that will enable you to create your own voice and messaging chatbots using Amazon.
Table of Contents (13 chapters)

Debugging Lambdas

If you have found that the problem is not with your Alexa skill or Lex chatbot, there might be a problem with your Lambda. Before you start changing things in your code, it is often a good idea to create a test in the Lambda console. This should represent the request that is being sent by Alexa or Lex. Use this test to see whether it is your Lambda that is at fault or it works as expected.

If your test is unsuccessful, look in the logs for the error messages. This can often point you to the root of the problem.

Here are some things to check when trying to debug a Lambda:

  • Your Lambda has all of the required packages installed
  • Your permissions are correct
  • All of your variables are correctly defined
  • Your Lambda code is correct
  • Everything your Lambda calls is working