Skip response validation option

docs/integrations.rst

@@ -63,6 +63,22 @@ Django can be integrated by middleware. Add ``DjangoOpenAPIMiddleware`` to your
 
     OPENAPI_SPEC = Spec.from_dict(spec_dict)
 
+You can skip response validation process: by setting ``OPENAPI_RESPONSE_CLS`` to ``None``
+
+.. code-block:: python
+  :emphasize-lines: 10
+
+    # settings.py
+    from openapi_core import Spec
+
+    MIDDLEWARE = [
+       # ...
+       'openapi_core.contrib.django.middlewares.DjangoOpenAPIMiddleware',
+    ]
+
+    OPENAPI_SPEC = Spec.from_dict(spec_dict)
+    OPENAPI_RESPONSE_CLS = None
+
 After that you have access to unmarshal result object with all validated request data from Django view through request object.
 
 .. code-block:: python
@@ -146,6 +162,23 @@ Additional customization parameters can be passed to the middleware.
        middleware=[openapi_middleware],
     )
 
+You can skip response validation process: by setting ``response_cls`` to ``None``
+
+.. code-block:: python
+  :emphasize-lines: 5
+
+    from openapi_core.contrib.falcon.middlewares import FalconOpenAPIMiddleware
+
+    openapi_middleware = FalconOpenAPIMiddleware.from_spec(
+       spec,
+       response_cls=None,
+    )
+
+    app = falcon.App(
+       # ...
+       middleware=[openapi_middleware],
+    )
+
 After that you will have access to validation result object with all validated request data from Falcon view through request context.
 
 .. code-block:: python
@@ -221,6 +254,18 @@ Additional customization parameters can be passed to the decorator.
        extra_format_validators=extra_format_validators,
     )
 
+You can skip response validation process: by setting ``response_cls`` to ``None``
+
+.. code-block:: python
+  :emphasize-lines: 5
+
+    from openapi_core.contrib.flask.decorators import FlaskOpenAPIViewDecorator
+
+    openapi = FlaskOpenAPIViewDecorator.from_spec(
+       spec,
+       response_cls=None,
+    )
+
 If you want to decorate class based view you can use the decorators attribute:
 
 .. code-block:: python

openapi_core/contrib/django/middlewares.py

@@ -18,8 +18,8 @@
 
 
 class DjangoOpenAPIMiddleware:
-    request_class = DjangoOpenAPIRequest
-    response_class = DjangoOpenAPIResponse
+    request_cls = DjangoOpenAPIRequest
+    response_cls = DjangoOpenAPIResponse
     errors_handler = DjangoOpenAPIErrorsHandler()
 
     def __init__(self, get_response: Callable[[HttpRequest], HttpResponse]):
@@ -28,6 +28,9 @@ def __init__(self, get_response: Callable[[HttpRequest], HttpResponse]):
         if not hasattr(settings, "OPENAPI_SPEC"):
             raise ImproperlyConfigured("OPENAPI_SPEC not defined in settings")
 
+        if hasattr(settings, "OPENAPI_RESPONSE_CLS"):
+            self.response_cls = settings.OPENAPI_RESPONSE_CLS
+
         self.processor = UnmarshallingProcessor(settings.OPENAPI_SPEC)
 
     def __call__(self, request: HttpRequest) -> HttpResponse:
@@ -39,6 +42,8 @@ def __call__(self, request: HttpRequest) -> HttpResponse:
             request.openapi = req_result
             response = self.get_response(request)
 
+        if self.response_cls is None:
+            return response
         openapi_response = self._get_openapi_response(response)
         resp_result = self.processor.process_response(
             openapi_request, openapi_response
@@ -64,9 +69,10 @@ def _handle_response_errors(
     def _get_openapi_request(
         self, request: HttpRequest
     ) -> DjangoOpenAPIRequest:
-        return self.request_class(request)
+        return self.request_cls(request)
 
     def _get_openapi_response(
         self, response: HttpResponse
     ) -> DjangoOpenAPIResponse:
-        return self.response_class(response)
+        assert self.response_cls is not None
+        return self.response_cls(response)

openapi_core/contrib/falcon/middlewares.py

@@ -20,17 +20,17 @@
 
 
 class FalconOpenAPIMiddleware(UnmarshallingProcessor):
-    request_class = FalconOpenAPIRequest
-    response_class = FalconOpenAPIResponse
+    request_cls = FalconOpenAPIRequest
+    response_cls = FalconOpenAPIResponse
     errors_handler = FalconOpenAPIErrorsHandler()
 
     def __init__(
         self,
         spec: Spec,
         request_unmarshaller_cls: Optional[RequestUnmarshallerType] = None,
         response_unmarshaller_cls: Optional[ResponseUnmarshallerType] = None,
-        request_class: Type[FalconOpenAPIRequest] = FalconOpenAPIRequest,
-        response_class: Type[FalconOpenAPIResponse] = FalconOpenAPIResponse,
+        request_cls: Type[FalconOpenAPIRequest] = FalconOpenAPIRequest,
+        response_cls: Type[FalconOpenAPIResponse] = FalconOpenAPIResponse,
         errors_handler: Optional[FalconOpenAPIErrorsHandler] = None,
         **unmarshaller_kwargs: Any,
     ):
@@ -40,8 +40,8 @@ def __init__(
             response_unmarshaller_cls=response_unmarshaller_cls,
             **unmarshaller_kwargs,
         )
-        self.request_class = request_class or self.request_class
-        self.response_class = response_class or self.response_class
+        self.request_cls = request_cls or self.request_cls
+        self.response_cls = response_cls or self.response_cls
         self.errors_handler = errors_handler or self.errors_handler
 
     @classmethod
@@ -50,17 +50,17 @@ def from_spec(
         spec: Spec,
         request_unmarshaller_cls: Optional[RequestUnmarshallerType] = None,
         response_unmarshaller_cls: Optional[ResponseUnmarshallerType] = None,
-        request_class: Type[FalconOpenAPIRequest] = FalconOpenAPIRequest,
-        response_class: Type[FalconOpenAPIResponse] = FalconOpenAPIResponse,
+        request_cls: Type[FalconOpenAPIRequest] = FalconOpenAPIRequest,
+        response_cls: Type[FalconOpenAPIResponse] = FalconOpenAPIResponse,
         errors_handler: Optional[FalconOpenAPIErrorsHandler] = None,
         **unmarshaller_kwargs: Any,
     ) -> "FalconOpenAPIMiddleware":
         return cls(
             spec,
             request_unmarshaller_cls=request_unmarshaller_cls,
             response_unmarshaller_cls=response_unmarshaller_cls,
-            request_class=request_class,
-            response_class=response_class,
+            request_cls=request_cls,
+            response_cls=response_cls,
             errors_handler=errors_handler,
             **unmarshaller_kwargs,
         )
@@ -74,6 +74,8 @@ def process_request(self, req: Request, resp: Response) -> None:  # type: ignore
     def process_response(  # type: ignore
         self, req: Request, resp: Response, resource: Any, req_succeeded: bool
     ) -> None:
+        if self.response_cls is None:
+            return resp
         openapi_req = self._get_openapi_request(req)
         openapi_resp = self._get_openapi_response(resp)
         resp.context.openapi = super().process_response(
@@ -101,9 +103,10 @@ def _handle_response_errors(
         return self.errors_handler.handle(req, resp, response_result.errors)
 
     def _get_openapi_request(self, request: Request) -> FalconOpenAPIRequest:
-        return self.request_class(request)
+        return self.request_cls(request)
 
     def _get_openapi_response(
         self, response: Response
     ) -> FalconOpenAPIResponse:
-        return self.response_class(response)
+        assert self.response_cls is not None
+        return self.response_cls(response)

openapi_core/contrib/flask/__init__.py

@@ -1,7 +1,9 @@
+from openapi_core.contrib.flask.decorators import FlaskOpenAPIViewDecorator
 from openapi_core.contrib.flask.requests import FlaskOpenAPIRequest
 from openapi_core.contrib.flask.responses import FlaskOpenAPIResponse
 
 __all__ = [
+    "FlaskOpenAPIViewDecorator",
     "FlaskOpenAPIRequest",
     "FlaskOpenAPIResponse",
 ]

openapi_core/contrib/flask/decorators.py

@@ -30,8 +30,10 @@ def __init__(
         spec: Spec,
         request_unmarshaller_cls: Optional[RequestUnmarshallerType] = None,
         response_unmarshaller_cls: Optional[ResponseUnmarshallerType] = None,
-        request_class: Type[FlaskOpenAPIRequest] = FlaskOpenAPIRequest,
-        response_class: Type[FlaskOpenAPIResponse] = FlaskOpenAPIResponse,
+        request_cls: Type[FlaskOpenAPIRequest] = FlaskOpenAPIRequest,
+        response_cls: Optional[
+            Type[FlaskOpenAPIResponse]
+        ] = FlaskOpenAPIResponse,
         request_provider: Type[FlaskRequestProvider] = FlaskRequestProvider,
         openapi_errors_handler: Type[
             FlaskOpenAPIErrorsHandler
@@ -44,8 +46,8 @@ def __init__(
             response_unmarshaller_cls=response_unmarshaller_cls,
             **unmarshaller_kwargs,
         )
-        self.request_class = request_class
-        self.response_class = response_class
+        self.request_cls = request_cls
+        self.response_cls = response_cls
         self.request_provider = request_provider
         self.openapi_errors_handler = openapi_errors_handler
 
@@ -60,6 +62,8 @@ def decorated(*args: Any, **kwargs: Any) -> Response:
             response = self._handle_request_view(
                 request_result, view, *args, **kwargs
             )
+            if self.response_cls is None:
+                return response
             openapi_response = self._get_openapi_response(response)
             response_result = self.process_response(
                 openapi_request, openapi_response
@@ -96,21 +100,22 @@ def _get_request(self) -> Request:
         return request
 
     def _get_openapi_request(self, request: Request) -> FlaskOpenAPIRequest:
-        return self.request_class(request)
+        return self.request_cls(request)
 
     def _get_openapi_response(
         self, response: Response
     ) -> FlaskOpenAPIResponse:
-        return self.response_class(response)
+        assert self.response_cls is not None
+        return self.response_cls(response)
 
     @classmethod
     def from_spec(
         cls,
         spec: Spec,
         request_unmarshaller_cls: Optional[RequestUnmarshallerType] = None,
         response_unmarshaller_cls: Optional[ResponseUnmarshallerType] = None,
-        request_class: Type[FlaskOpenAPIRequest] = FlaskOpenAPIRequest,
-        response_class: Type[FlaskOpenAPIResponse] = FlaskOpenAPIResponse,
+        request_cls: Type[FlaskOpenAPIRequest] = FlaskOpenAPIRequest,
+        response_cls: Type[FlaskOpenAPIResponse] = FlaskOpenAPIResponse,
         request_provider: Type[FlaskRequestProvider] = FlaskRequestProvider,
         openapi_errors_handler: Type[
             FlaskOpenAPIErrorsHandler
@@ -121,8 +126,8 @@ def from_spec(
             spec,
             request_unmarshaller_cls=request_unmarshaller_cls,
             response_unmarshaller_cls=response_unmarshaller_cls,
-            request_class=request_class,
-            response_class=response_class,
+            request_cls=request_cls,
+            response_cls=response_cls,
             request_provider=request_provider,
             openapi_errors_handler=openapi_errors_handler,
             **unmarshaller_kwargs,

tests/integration/contrib/django/data/v3.0/djangoproject/tags/views.py

@@ -0,0 +1,13 @@
+from django.http import HttpResponse
+from rest_framework.views import APIView
+
+
+class TagListView(APIView):
+    def get(self, request):
+        assert request.openapi
+        assert not request.openapi.errors
+        return HttpResponse("success")
+
+    @staticmethod
+    def get_extra_actions():
+        return []

tests/integration/contrib/django/data/v3.0/djangoproject/urls.py

@@ -16,7 +16,9 @@
 from django.contrib import admin
 from django.urls import include
 from django.urls import path
-from djangoproject.pets import views
+from djangoproject.pets.views import PetDetailView
+from djangoproject.pets.views import PetListView
+from djangoproject.tags.views import TagListView
 
 urlpatterns = [
     path("admin/", admin.site.urls),
@@ -26,12 +28,17 @@
     ),
     path(
         "v1/pets",
-        views.PetListView.as_view(),
+        PetListView.as_view(),
         name="pet_list_view",
     ),
     path(
         "v1/pets/<int:petId>",
-        views.PetDetailView.as_view(),
+        PetDetailView.as_view(),
         name="pet_detail_view",
     ),
+    path(
+        "v1/tags",
+        TagListView.as_view(),
+        name="tag_list_view",
+    ),
 ]

tests/integration/contrib/django/test_django_project.py

@@ -5,6 +5,7 @@
 from unittest import mock
 
 import pytest
+from django.test.utils import override_settings
 
 
 class BaseTestDjangoProject:
@@ -372,3 +373,25 @@ def test_post_valid(self, api_client):
 
         assert response.status_code == 201
         assert not response.content
+
+
+class TestDRFTagListView(BaseTestDRF):
+    def test_get_response_invalid(self, client):
+        headers = {
+            "HTTP_AUTHORIZATION": "Basic testuser",
+            "HTTP_HOST": "petstore.swagger.io",
+        }
+        response = client.get("/v1/tags", **headers)
+
+        assert response.status_code == 415
+
+    def test_get_skip_response_validation(self, client):
+        headers = {
+            "HTTP_AUTHORIZATION": "Basic testuser",
+            "HTTP_HOST": "petstore.swagger.io",
+        }
+        with override_settings(OPENAPI_RESPONSE_CLS=None):
+            response = client.get("/v1/tags", **headers)
+
+        assert response.status_code == 200
+        assert response.content == b"success"

tests/integration/contrib/flask/conftest.py

@@ -0,0 +1,37 @@
+import pytest
+from flask import Flask
+
+
+@pytest.fixture(scope="session")
+def spec(factory):
+    specfile = "contrib/flask/data/v3.0/flask_factory.yaml"
+    return factory.spec_from_file(specfile)
+
+
+@pytest.fixture
+def app(app_factory):
+    return app_factory()
+
+
+@pytest.fixture
+def client(client_factory, app):
+    return client_factory(app)
+
+
+@pytest.fixture(scope="session")
+def client_factory():
+    def create(app):
+        return app.test_client()
+
+    return create
+
+
+@pytest.fixture(scope="session")
+def app_factory():
+    def create(root_path=None):
+        app = Flask("__main__", root_path=root_path)
+        app.config["DEBUG"] = True
+        app.config["TESTING"] = True
+        return app
+
+    return create