How to enable strict validation of the request body?

[BuilderHarrison]

Howdy,
I was wondering if there was a flag or something that validates a request body to match the spec that it is generated from.

For example, here is an example swagger spec, notice how i have put required: true on the request body

openapi: '3.0.0'
info:
  title: Basic Animal API - Request Body Validation
  version: '1.0'
  description: OpenAPI Specification for an animal service
  contact:
    name: Harrison Smith
    email: Harrison@Harrison.com
servers:
  - url: 'http://localhost:3000'
paths:
  /v1/animal:
    post:
      summary: (POST) Create Animal - Request validation
      operationId: post-animal-request-validation
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  type: string
                  
                species:
                  type: string
      
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                properties:
                  entityId:
                    type: string
    parameters: []
components:
  responses:
    UnauthorizedError:
      description: Access token is missing or invalid

Here is the generated code for reference too- https://github.com/BuilderHarrison/animal-generated-oapi-codgen

Here is 2 images of what happens of when i dont provide a request body with any of the required properties - https://imgur.com/a/hZL9b7N

That image is of the method when i'm implementing one of the handlers. Which is where I assume would be the best place to implement my own validation of the request body if there isnt a flag or something provided by oapi-codegen! Happy for suggestions if this is something, someone has tackled already :).

Cheers,
Harrison

[BuilderHarrison]

Follow up, i haven't tested middlewears just yet, so i'll try that too!

[BuilderHarrison]

I was able to accomplish request body validation by using the chi-middlewear module and editing the swagger spec to something like this:

openapi: '3.0.0'
info:
  title: Basic Animal API - Request Body Validation
  version: '1.0'
  description: OpenAPI Specification for an animal service
  contact:
    name: Harrison Smith
    email: Harrison@Harrison.com
paths:
  /v1/animal:
    post:
      summary: (POST) Create Animal - Request validation
      operationId: post-animal-request-validation
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              properties:
                name:
                  type: string
                random:
                  type: object
                  properties:
                    fav-fruit:          # <!--- form field name
                      type: string
                  required:
                    - fav-fruit
              required:
                - name
                - random
      
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                properties:
                  entityId:
                    type: string
    parameters: []
components:
  responses:
    UnauthorizedError:
      description: Access token is missing or invalid

and added the following code to my serverHandler

swaggerFile, err := animal.GetSwagger()
	if err != nil {
		log.Fatalln("unable to load swagger spec", err.Error())
	}

	r.Use(chimiddlewear.OapiRequestValidator(swaggerFile))