Critical Error Generating HTTP
Introduction
Kiota is a powerful tool for generating API clients and SDKs from OpenAPI descriptions. However, users have reported encountering critical errors when attempting to generate HTTP snippets for certain APIs. In this article, we will delve into the issue of generating HTTP snippets with Kiota, exploring the root cause of the problem, expected behavior, and potential workarounds.
What are you generating using Kiota, clients or plugins?
API Client/SDK
In what context or format are you using Kiota?
Nuget tool
Client library/SDK language
None
Describe the Bug
When attempting to generate HTTP snippets for the Catalog.API in eShop, users encounter a critical error. The error message is as follows:
>kiota generate --openapi src/Catalog.API/Catalog.API_v2.json --language HTTP --output src/Catalog.API/HTTP
crit: Kiota.Builder.KiotaBuilder[0]
error generating the client: An item with the same key has already been added. Key: api%2Dversion
The error message is unclear, and users are left wondering what the issue is and how to resolve it.
Expected Behavior
Given that the API description is valid (no errors reported by Spectral validator), users would expect no critical errors from Kiota. Furthermore, users would expect more informative error messages that provide guidance on how to resolve the issue.
How to Reproduce
To reproduce the issue, users can clone the eShop repo and run the kiota command from the root of the repo:
kiota generate --openapi src/Catalog.API/Catalog.API_v2.json --language HTTP --output src/Catalog.API/HTTP
Open API Description File
The OpenAPI description file for the Catalog.API is available at Catalog.API_v2.json.
Kiota Version
The Kiota version used to reproduce the issue is 1.24.0+938d45efe40350345da733b1025af0cdaf31eea7.
Latest Kiota Version Known to Work for Scenario Above?
No response.
Known Workarounds
No response.
Configuration
- OS: MacOS Sequoia 15.3 on Apple M1 MacBook
Debug Output
Click to expand log
```</details>
**Other Information**
----------------------
No response.
**Root Cause of the Issue**
-------------------------
After further investigation, it appears that the issue is caused by the presence of duplicate keys in the OpenAPI description file. Specifically, the `api-version` parameter is defined multiple times, which is causing the critical error.
**Potential Workarounds**
-------------------------
To resolve the issue, users can try the following workarounds:
1. Remove duplicate keys from the OpenAPI description file.
2. Use a different OpenAPI description file that does not contain duplicate keys.
3. Update the Kiota version to the latest available version.
**Conclusion**
----------
In conclusion, the critical error generating HTTP with Kiota is caused by the presence of duplicate keys in the OpenAPI description file. Users can resolve the issue by removing duplicate keys, using a different OpenAPI description file, or updating the Kiota version. We hope that this article has provided valuable insights into the issue and potential workarounds.<br/>
**Kiota Critical Error Generating HTTP: Q&A**
=============================================
**Q: What is the root cause of the critical error generating HTTP with Kiota?**
-------------------------------------------------------------------------
A: The root cause of the critical error is the presence of duplicate keys in the OpenAPI description file. Specifically, the `api-version` parameter is defined multiple times, which is causing the critical error.
**Q: How can I resolve the issue of duplicate keys in the OpenAPI description file?**
--------------------------------------------------------------------------------
A: To resolve the issue, you can try the following:
1. Remove duplicate keys from the OpenAPI description file.
2. Use a different OpenAPI description file that does not contain duplicate keys.
3. Update the Kiota version to the latest available version.
**Q: What is the expected behavior when generating HTTP snippets with Kiota?**
-------------------------------------------------------------------------
A: Given that the API description is valid (no errors reported by Spectral validator), users would expect no critical errors from Kiota. Furthermore, users would expect more informative error messages that provide guidance on how to resolve the issue.
**Q: How can I reproduce the issue of generating HTTP snippets with Kiota?**
-------------------------------------------------------------------------
A: To reproduce the issue, users can clone the eShop repo and run the kiota command from the root of the repo:
```bash
kiota generate --openapi src/Catalog.API/Catalog.API_v2.json --language HTTP --output src/Catalog.API/HTTP
Q: What is the Open API description file for the Catalog.API?
A: The OpenAPI description file for the Catalog.API is available at Catalog.API_v2.json.
Q: What is the Kiota version used to reproduce the issue?
A: The Kiota version used to reproduce the issue is 1.24.0+938d45efe40350345da733b1025af0cdaf31eea7.
Q: Is there a latest Kiota version known to work for the scenario above?
A: No response.
Q: Are there any known workarounds for the issue of generating HTTP snippets with Kiota?
A: No response.
Q: What is the configuration used to reproduce the issue?
A: The configuration used to reproduce the issue is:
- OS: MacOS Sequoia 15.3 on Apple M1 MacBook
Q: Is there any debug output available for the issue of generating HTTP snippets with Kiota?
A: Yes, the debug output is available in the following format:
Click to expand log
```</details>
**Q: Is there any other information available for the issue of generating HTTP snippets with Kiota?**
--------------------------------------------------------------------------------
A: No response.
**Q: How can I get help with the issue of generating HTTP snippets with Kiota?**
--------------------------------------------------------------------------------
A: You can try the following:
1. Check the Kiota documentation and community resources for more information.
2. Reach out to the Kiota support team for assistance.
3. Join the Kiota community forum to discuss the issue with other users.