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""" |
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byceps.services.authorization.impex_service |
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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Import/export |
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:Copyright: 2006-2020 Jochen Kupperschmidt |
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:License: Modified BSD, see LICENSE for details. |
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""" |
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from pathlib import Path |
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from typing import Dict, Iterator, List, Tuple, Union |
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import rtoml |
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from ...database import db |
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from .models import Permission as DbPermission, Role as DbRole |
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from . import service |
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# -------------------------------------------------------------------- # |
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# import |
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def import_from_file(path: Path) -> Tuple[int, int]: |
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"""Import permissions, roles, and their relations from TOML.""" |
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data = rtoml.load(path) |
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permissions = data['permissions'] |
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roles = data['roles'] |
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_create_permissions(permissions) |
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_create_roles(roles) |
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return len(permissions), len(roles) |
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def _create_permissions(permissions: List[Dict[str, str]]) -> None: |
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for permission in permissions: |
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service.create_permission(permission['id'], permission['title']) |
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def _create_roles(roles: List[Dict[str, Union[str, List[str]]]]) -> None: |
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for role in roles: |
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role_id = role['id'] |
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service.create_role(role_id, role['title']) |
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for permission_id in role['assigned_permissions']: |
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service.assign_permission_to_role(permission_id, role_id) |
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# -------------------------------------------------------------------- # |
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# export |
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def export() -> str: |
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"""Export all permissions, roles, and their relations as TOML.""" |
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permissions = list(_collect_permissions()) |
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roles = list(_collect_roles()) |
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data = { |
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'permissions': permissions, |
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'roles': roles, |
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} |
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return rtoml.dumps(data, pretty=True) |
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def _collect_permissions() -> Iterator[Dict[str, str]]: |
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"""Collect all permissions, even those not assigned to any role.""" |
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permissions = DbPermission.query \ |
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.options( |
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db.undefer('title'), |
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) \ |
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.order_by(DbPermission.id) \ |
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.all() |
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for permission in permissions: |
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yield { |
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'id': permission.id, |
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'title': permission.title, |
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} |
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def _collect_roles() -> Iterator[Dict[str, Union[str, List[str]]]]: |
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"""Collect all roles and the permissions assigned to them.""" |
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roles = DbRole.query \ |
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.options( |
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db.undefer('title'), |
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db.joinedload('role_permissions'), |
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) \ |
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.order_by(DbRole.id) \ |
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.all() |
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for role in roles: |
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permission_ids = [permission.id for permission in role.permissions] |
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permission_ids.sort() |
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yield { |
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'id': role.id, |
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'title': role.title, |
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'assigned_permissions': permission_ids, |
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} |
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byceps /
byceps
