Скачать или смотреть How to Fix the No Dialogflow Intent Detected Error on AWS Lambda

Discover why you're seeing 'no dialogflow intent detected' in AWS Lambda and how switching to the proper API Gateway can resolve this issue efficiently.
---
This video is based on the question https://stackoverflow.com/q/66446414/ asked by the user 'Adam B' ( https://stackoverflow.com/u/15317392/ ) and on the answer https://stackoverflow.com/a/66462609/ provided by the user 'Adam B' ( https://stackoverflow.com/u/15317392/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Why am I getting 'no dialogflow intent detected' on Lambda but it works fine on Google Cloud Functions?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Understanding the No Dialogflow Intent Detected Error on AWS Lambda

If you are developing a Dialogflow agent and have recently migrated your fulfillment code from Google Cloud Functions to AWS Lambda, you may encounter an error stating "No intent was provided and fallback handler is not defined." This issue can be particularly frustrating, especially when everything is working perfectly on Google Cloud Functions. Let’s dive into the causes of this problem and how you can solve it effectively.

The Problem

As you transition your Dialogflow agent's fulfillment to AWS Lambda, the error messages from CloudWatch logs can be puzzling. You might see the following error message in the logs:

[[See Video to Reveal this Text or Code Snippet]]

Upon investigation, you might notice that while both AWS Lambda and Google Cloud Functions handle the requests, the way AWS maintains the JSON in the request body can lead to discrepancies. This is a fundamental difference between the two platforms that can lead to functionality issues.

Investigating the Cause

The root cause behind the "no dialogflow intent detected" error lies in the type of API Gateway you're using with your AWS Lambda function. When setting up your API Gateway, you may have inadvertently chosen an HTTP API rather than a REST API.

Key Differences in API Types

HTTP API: Designed for building APIs faster with lower latency but may not fully support the functionality required for Dialogflow integrations.

REST API: Provides full support for more complex integrations and is typically more compatible with the needs of Dialogflow, allowing for better handling of intent requests.

The Solution: Switch to REST API

To resolve the issue, you'll need to change the API Gateway type from HTTP API to REST API. Here’s how you can make this switch:

Steps to Switch to REST API

Log in to your AWS Management Console.

Navigate to API Gateway.

Select your existing API (which is currently set up as an HTTP API).

Create a new REST API: Choose the option for REST API and configure your settings (consider using Regional or Edge-optimized based on your requirements).

Set Up Integrations: Make sure to link your new REST API to your AWS Lambda function correctly.

Deploy the REST API: After all configurations, deploy the API to a new or existing stage.

Verifying the Change

Once your REST API is deployed, you can test it by sending requests to the endpoint. Check your CloudWatch logs again for any errors that arise. If all goes well, you should see that your intents are now being detected correctly, and the error message should no longer appear.

Conclusion

Migrating Dialogflow fulfillment from Google Cloud Functions to AWS Lambda doesn't have to be a hassle. By ensuring that you are using the correct API Gateway type (REST API), you can effectively eliminate the "no dialogflow intent detected" error. If you encounter further issues, consider revisiting your code to confirm that everything is set up correctly, or consult AWS documentation for additional troubleshooting steps. Good luck with your Dialogflow agent development!