Async Redis Adapter for PyCasbin

Async Redis Adapter is the async redis adapter for PyCasbin. With this library, Casbin can load policy from redis or save policy to it.

Installation

pip install casbin_async_redis_adapter

Simple Example

import asyncio
from casbin_async_redis_adapter import Adapter
import casbin


async def get_enforcer():
    adapter = Adapter("localhost", 6379, encoding="utf-8")
    e = casbin.AsyncEnforcer("rbac_model.conf", adapter)
    model = e.get_model()

    model.clear_policy()
    model.add_policy("p", "p", ["alice", "data1", "read"])
    await adapter.save_policy(model)

    model.clear_policy()
    model.add_policy("p", "p", ["bob", "data2", "write"])
    await adapter.save_policy(model)

    model.clear_policy()
    model.add_policy("p", "p", ["data2_admin", "data2", "read"])
    await adapter.save_policy(model)

    model.clear_policy()
    model.add_policy("p", "p", ["data2_admin", "data2", "write"])
    await adapter.save_policy(model)

    model.clear_policy()
    model.add_policy("g", "g", ["alice", "data2_admin"])
    await adapter.save_policy(model)

    e = casbin.AsyncEnforcer("rbac_model.conf", adapter)
    await e.load_policy()

    return e


sub = "alice"  # the user that wants to access a resource.
obj = "data1"  # the resource that is going to be accessed.
act = "read"  # the operation that the user performs on the resource.


async def main():
    e = await get_enforcer()
    if e.enforce("alice", "data1", "read"):
        print("alice can read data1")
    else:
        print("alice can not read data1")


asyncio.run(main())

Configuration

Adapter() enable decode_responses by default and supports any Redis parameter configuration.

To use casbin_redis_adapter, you must provide the following parameter configuration

• host: address of the redis service
• port: redis service port

The following parameters are provided by default

• db: redis database, default is 0
• username: redis username, default is None
• password: redis password, default is None
• key: casbin rule to store key, default is casbin_rules

For more parameters, please follow redis-py

Getting Help

• PyCasbin

License

This project is licensed under the Apache 2.0 license.