openapi-core
************

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About
=====

Openapi-core is a Python library that adds client-side and server-side support
for the `OpenAPI Specification v3.0.0 <https://github.com/OAI/OpenAPI-Specification/blob/master/versions/3.0.0.md>`__.

Installation
============

Recommended way (via pip):

::

    $ pip install openapi-core

Alternatively you can download the code and install from the repository:

.. code-block:: bash

   $ pip install -e git+https://github.com/p1c2u/openapi-core.git#egg=openapi_core


Usage
=====

Firstly create your specification:

.. code-block:: python

   from openapi_core import create_spec

   spec = create_spec(spec_dict)

Now you can use it to validate requests

.. code-block:: python

   from openapi_core.shortcuts import RequestValidator

   validator = RequestValidator(spec)
   result = validator.validate(request)

   # raise errors if request invalid
   result.raise_for_errors()

   # get list of errors
   errors = result.errors

and unmarshal request data from validation result

.. code-block:: python

   # get parameters dictionary with path, query, cookies and headers parameters
   validated_params = result.parameters

   # get body
   validated_body = result.body

or use shortcuts for simple validation

.. code-block:: python

   from openapi_core import validate_parameters, validate_body

   validated_params = validate_parameters(spec, request)
   validated_body = validate_body(spec, request)

Request object should implement BaseOpenAPIRequest interface. You can use FlaskOpenAPIRequest a Flask/Werkzeug request wrapper implementation:

.. code-block:: python

   from openapi_core.shortcuts import RequestValidator
   from openapi_core.wrappers.flask import FlaskOpenAPIRequest

   openapi_request = FlaskOpenAPIRequest(flask_request)
   validator = RequestValidator(spec)
   result = validator.validate(openapi_request)

or specify request wrapper class for shortcuts

.. code-block:: python

   from openapi_core import validate_parameters, validate_body

   validated_params = validate_parameters(
       spec, request, wrapper_class=FlaskOpenAPIRequest)
   validated_body = validate_body(
       spec, request, wrapper_class=FlaskOpenAPIRequest)

You can also validate responses

.. code-block:: python

   from openapi_core.shortcuts import ResponseValidator

   validator = ResponseValidator(spec)
   result = validator.validate(request, response)

   # raise errors if response invalid
   result.raise_for_errors()

   # get list of errors
   errors = result.errors

and unmarshal response data from validation result

.. code-block:: python

   # get headers
   validated_headers = result.headers

   # get data
   validated_data = result.data

or use shortcuts for simple validation

.. code-block:: python

   from openapi_core import validate_data

   validated_data = validate_data(spec, request, response)

Response object should implement BaseOpenAPIResponse interface. You can use FlaskOpenAPIResponse a Flask/Werkzeug response wrapper implementation:

.. code-block:: python

   from openapi_core.shortcuts import ResponseValidator
   from openapi_core.wrappers.flask import FlaskOpenAPIResponse

   openapi_response = FlaskOpenAPIResponse(flask_response)
   validator = ResponseValidator(spec)
   result = validator.validate(openapi_request, openapi_response)

or specify response wrapper class for shortcuts

.. code-block:: python

   from openapi_core import validate_parameters, validate_body

   validated_data = validate_data(
       spec, request, response, response_wrapper_class=FlaskOpenAPIResponse)

Related projects
================
* `openapi-spec-validator <https://github.com/p1c2u/openapi-spec-validator>`__
* `pyramid_openapi3 <https://github.com/niteoweb/pyramid_openapi3>`__