openapi-core

About

Openapi-core is a Python library that adds client-side and server-side support for the OpenAPI Specification v3.0.0.

Installation

Recommended way (via pip):

$ pip install openapi-core

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

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

Usage

Firstly create your specification:

from openapi_core import create_spec

spec = create_spec(spec_dict)

Now you can use it to validate requests

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

# 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

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:

from openapi_core.validators 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

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

from openapi_core.validators 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

# get headers
validated_headers = result.headers

# get data
validated_data = result.data

or use shortcuts for simple validation

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:

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

from openapi_core import validate_parameters, validate_body

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

Related projects

• openapi-spec-validator
• pyramid_openapi3