graphql-authz 0.1.1

Authorization middleware for GraphQL.

graphql-authz

GraphQL-Authz is a Python3.6+ port of GraphQL-Authz, the node.js implementation for the Casbin authorization middleware.

This package should use with GraphQL-core 3, allowing to limit access to each endpoint using casbin policy.

Installation

Install the package using pip.

pip install graphql-authz

Get Started

This package should use with graphql and graphql-middleware. To limit access to each graphql resource you can use a casbin policy. For example, given this policy for an RBAC model:

p, authorized_user, hello, query

Validation can be enforced using:

import casbin
from authz.middleware import enforcer_middleware

from graphql import (
    graphql_sync,
    GraphQLSchema,
    GraphQLObjectType,
    GraphQLField,
    GraphQLString,
)


schema = GraphQLSchema(
    query=GraphQLObjectType(
        name="RootQueryType",
        fields={
            "hello": GraphQLField(
                GraphQLString,
                resolve=lambda obj, info: "world")
        }))

enforcer = casbin.Enforcer("model_file.conf", "policy_file.csv")
casbin_middleware = enforcer_middleware(enforcer)

query = """{ hello }"""

# Authorized user ("authorized_user") has access to data
response = graphql_sync(
    schema,
    query,
    middleware=[casbin_middleware],
    context_value={"role": "authorized_user"}
)
assert response.data == {"hello": "world"}

# Unauthorized users ("unauthorized_user") are rejected
response = graphql_sync(
    schema,
    query,
    middleware=[casbin_middleware],
    context_value={"role": "unauthorized_user"}
)
assert response.errors[0].message == "unauthorized_user can not query hello"

For more interesting scenarios see tests folder.

Credits

This package was created with Cookiecutter and the audreyr/cookiecutter-pypackage project template.