core/orm/rbac.py
2021-08-19 18:33:39 +03:00

88 lines
2.9 KiB
Python

import warnings
from typing import Type
from sqlalchemy import String, Column, ForeignKey, types, UniqueConstraint
from sqlalchemy.orm import relationship
from orm.base import Base, REGISTRY, engine, local_session
class ClassType(types.TypeDecorator):
impl = types.String
@property
def python_type(self):
return NotImplemented
def process_literal_param(self, value, dialect):
return NotImplemented
def process_bind_param(self, value, dialect):
return value.__name__ if isinstance(value, type) else str(value)
def process_result_value(self, value, dialect):
class_ = REGISTRY.get(value)
if class_ is None:
warnings.warn(f"Can't find class <{value}>,find it yourself 😊", stacklevel=2)
return class_
class Organization(Base):
__tablename__ = 'organization'
name: str = Column(String, nullable=False, unique=True, comment="Organization Name")
class Role(Base):
__tablename__ = 'role'
name: str = Column(String, nullable=False, unique=True, comment="Role Name")
org_id: int = Column(ForeignKey("organization.id", ondelete="CASCADE"), nullable=False, comment="Organization")
permissions = relationship(lambda: Permission)
class Operation(Base):
__tablename__ = 'operation'
name: str = Column(String, nullable=False, unique=True, comment="Operation Name")
@staticmethod
def init_table():
with local_session() as session:
edit_op = session.query(Operation).filter(Operation.name == "edit").first()
if not edit_op:
edit_op = Operation.create(name = "edit")
Operation.edit_id = edit_op.id
class Resource(Base):
__tablename__ = "resource"
resource_class: Type[Base] = Column(ClassType, nullable=False, unique=True, comment="Resource class")
name: str = Column(String, nullable=False, unique=True, comment="Resource name")
@staticmethod
def init_table():
with local_session() as session:
shout_res = session.query(Resource).filter(Resource.name == "shout").first()
if not shout_res:
shout_res = Resource.create(name = "shout", resource_class = "shout")
Resource.shout_id = shout_res.id
class Permission(Base):
__tablename__ = "permission"
__table_args__ = (UniqueConstraint("role_id", "operation_id", "resource_id"), {"extend_existing": True})
role_id: int = Column(ForeignKey("role.id", ondelete="CASCADE"), nullable=False, comment="Role")
operation_id: int = Column(ForeignKey("operation.id", ondelete="CASCADE"), nullable=False, comment="Operation")
resource_id: int = Column(ForeignKey("resource.id", ondelete="CASCADE"), nullable=False, comment="Resource")
if __name__ == '__main__':
Base.metadata.create_all(engine)
ops = [
Permission(role_id=1, operation_id=1, resource_id=1),
Permission(role_id=1, operation_id=2, resource_id=1),
Permission(role_id=1, operation_id=3, resource_id=1),
Permission(role_id=1, operation_id=4, resource_id=1),
Permission(role_id=2, operation_id=4, resource_id=1)
]
global_session.add_all(ops)
global_session.commit()