tornado-openapi3/README.rst
2020-11-20 13:02:46 -05:00

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===================
Tornado OpenAPI 3
===================
.. image:: https://travis-ci.com/correl/tornado-openapi3.svg?branch=master
:target: https://travis-ci.com/correl/tornado-openapi3
Tornado OpenAPI 3 request and response validation library.
Provides integration between the `Tornado`_ web framework and `Openapi-core`_
library for validating request and response objects against an `OpenAPI 3`_
specification.
.. _Tornado: https://www.tornadoweb.org/
.. _Openapi-core: https://github.com/p1c2u/openapi-core
.. _OpenAPI 3: https://swagger.io/specification/
Adding validation to request handlers
=====================================
.. code:: python
from openapi_core import create_spec # type: ignore
from openapi_core.exceptions import OpenAPIError # type: ignore
from openapi_core.deserializing.exceptions import DeserializeError # type: ignore
from openapi_core.schema.media_types.exceptions import ( # type: ignore
InvalidContentType,
)
from openapi_core.unmarshalling.schemas.exceptions import ValidateError # type: ignore
from tornado.web import RequestHandler
from tornado_openapi3.requests import RequestValidator
import yaml
class OpenAPIRequestHandler(RequestHandler):
async def prepare(self) -> None:
maybe_coro = super().prepare()
if maybe_coro and asyncio.iscoroutine(maybe_coro): # pragma: no cover
await maybe_coro
spec = create_spec(yaml.safe_load(self.render_string("openapi.yaml")))
validator = RequestValidator(spec)
result = validator.validate(self.request)
try:
result.raise_for_errors()
except InvalidContentType:
self.set_status(415)
self.finish()
except (DeserializeError, ValidateError) as e:
self.set_status(400)
self.finish()
except OpenAPIError:
raise