[BUG] Description

Description

When trying to generate the code for a file upload endpoint in aiohttp (python), it generates a "file" type for the binary string.

openapi-generator version

4.1.1

OpenAPI declaration file content or url

/upload:
    post:
      tags:
        - file
      summary: Upload file
      description: File upload
      responses:
        '200':
          description: successful operation
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Response'
        '400':
          description: Bad data
      requestBody:
          content:
            multipart/form-data:
              schema:
                type: object
                properties:
                  fileId:
                    type: integer
                  userId:
                    type: integer
                  fileName:
                    type: string
                    format: binary

Command line used for generation

java -jar $jarfile generate -i spec.yaml -g python-aiohttp --package-name test_project -o ./

Steps to reproduce

Run the generation code with the endpoint above. It produces the following model, where the "file" type is undefined:

class InlineObject(Model):
    """NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).

    Do not edit the class manually.
    """

    def __init__(self, file_id: int=None, user_id: int=None, file_name: file=None):
        """InlineObject - a model defined in OpenAPI

        :param file_id: The file_id of this InlineObject.
        :param user_id: The user_id of this InlineObject.
        :param file_name: The file_name of this InlineObject.
        """
        self.openapi_types = {
            'file_id': int,
            'user_id': int,
            'file_name': file
        }

Related issues/PRs

Suggest a fix

Reproduce the issue with the supplied OpenAPI YAML and the java -jar ... generate -g python-aiohttp command, then trace the python-aiohttp generator's type mapping for the string schema with binary format. Done means the generated InlineObject uses a defined binary-file type instead of file, while the integer fields remain unchanged.