Скачать или смотреть Resolving Serverless-aws-documentation Swagger Parameter Issues

Learn how to fix the error when using `serverless openapi generate` to ensure correct Swagger parameters are defined in your OpenAPI documentation.
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Understanding Swagger Parameters in Serverless AWS Documentation

When working with Serverless Framework and setting up AWS API Gateway, developers often encounter complications with OpenAPI documentation generation. A common problem arises when the resulting openapi.yaml does not include the defined parameters after using the command serverless openapi generate. This can lead to confusion, particularly when the documentation does not reflect the desired API endpoints. In this guide, we will explore one such problem involving Swagger parameters and provide a clear solution.

The Problem at Hand

You might have found yourself in a situation where you've defined several parameters for your HTTP function but are met with the following semantic errors in the generated OpenAPI documentation:

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

This indicates that the parameters game_id and camera_id, which you intended to use, are not recognized correctly by the OpenAPI specifications, leading to the generation of an incomplete YAML file.

Breaking Down the Solution

To resolve this issue, it's essential to understand the types of parameters involved in an HTTP request within OpenAPI specifications. In this scenario, the declared parameters game_id and camera_id are intended to be used as path parameters rather than query parameters.

Steps to Fix the Issue

Identify the Requirement:

Since you are using a path in your event setup (path: retransmit/{game_id}/{camera_id}), the parameters need to be defined as path parameters.

Modify Your Configuration:

Change the declaration of your parameters from queryParams to pathParams.

Here is an example of how to correctly define your pathParams:

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

Why the Change is Necessary

Path Parameters vs. Query Parameters:

Path Parameters: These are used to identify a specific resource or resources; they are part of the URL path. For example, game_id and camera_id are essential to specify which resource (in this case, a certain frame) you are accessing.

Query Parameters: These are optional and are used to sort or filter resources; they are part of the URL after the ?. Since game_id and camera_id are crucial to accessing your resources directly, they must be defined as path parameters.

Conclusion

Correctly defining your parameters according to the specifications required by OpenAPI is critical for generating thorough and accurate API documentation with the Serverless Framework. By switching from queryParams to pathParams, as demonstrated, you can resolve semantic errors and ensure your openapi.yaml accurately reflects the desired API structure.

If you encounter issues or need further clarification on the Serverless Framework or OpenAPI, feel free to reach out for more assistance!