====== rororo

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Implement aiohttp.web_ OpenAPI 3_ server applications with schema first approach.

As well as bunch other utilities to build effective server applications with Python_ 3 & aiohttp.web_.

• Works on Python_ 3.7+
• Works with aiohttp.web_ 3.8.1+
• BSD licensed
• Source, issues, and pull requests on GitHub <https://github.com/playpauseandstop/rororo>_

.. _OpenAPI 3: https://spec.openapis.org/oas/v3.0.3 .. _aiohttp.web: https://docs.aiohttp.org/en/stable/web.html .. _Python: https://www.python.org/

Quick Start

rororo relies on valid OpenAPI 3 schema file (both JSON or YAML formats supported).

Example below, illustrates on how to handle operation hello_world from openapi.yaml_ schema file.

.. code-block:: python

from pathlib import Path
from typing import List

from aiohttp import web
from rororo import (
    openapi_context,
    OperationTableDef,
    setup_openapi,
)


operations = OperationTableDef()


@operations.register
async def hello_world(request: web.Request) -> web.Response:
    with openapi_context(request) as context:
        name = context.parameters.query.get("name", "world")
        email = context.parameters.query.get(
            "email", "[email protected]"
        )
        return web.json_response(
            {"message": f"Hello, {name}!", "email": email}
        )


def create_app(argv: List[str] = None) -> web.Application:
    return setup_openapi(
        web.Application(),
        Path(__file__).parent / "openapi.yaml",
        operations,
        server_url="/api",
    )

.. _openapi.yaml: https://github.com/playpauseandstop/rororo/blob/main/tests/rororo/openapi.yaml

Schema First Approach

Unlike other popular Python OpenAPI 3 solutions, such as Django REST Framework, FastAPI, flask-apispec, or aiohttp-apispec rororo requires you to provide valid OpenAPI 3_ schema first. This makes rororo similar to connexion, pyramid_openapi3 and other schema first libraries.

.. _Django REST Framework: https://www.django-rest-framework.org .. _FastAPI: https://fastapi.tiangolo.com .. _flask-apispec: https://flask-apispec.readthedocs.io .. _aiohttp-apispec: https://aiohttp-apispec.readthedocs.io .. _connexion: https://connexion.readthedocs.io .. _pyramid_openapi3: https://github.com/Pylons/pyramid_openapi3

Class Based Views

rororo supports class based views_ as well. Todo-Backend_ example illustrates how to use class based views for OpenAPI 3 servers.

In snippet below, rororo expects that OpenAPI 3 schema contains operation ID UserView.get,

.. code-block:: python

@operations.register
class UserView(web.View):
    async def get(self) -> web.Response:
        ...

.. _class based views: https://docs.aiohttp.org/en/stable/web_quickstart.html#aiohttp-web-class-based-views .. _Todo-Backend: https://github.com/playpauseandstop/rororo/tree/main/examples/todobackend

More Examples

Check examples_ folder to see other examples on how to build aiohttp.web OpenAPI 3 server applications.

.. _examples: https://github.com/playpauseandstop/rororo/tree/main/examples