53 lines
1.6 KiB
Python
53 lines
1.6 KiB
Python
"""passbook core policy engine"""
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from logging import getLogger
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from celery import group
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from passbook.core.celery import CELERY_APP
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from passbook.core.models import Policy, User
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LOGGER = getLogger(__name__)
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@CELERY_APP.task()
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def _policy_engine_task(user_pk, policy_pk, **kwargs):
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"""Task wrapper to run policy checking"""
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policy_obj = Policy.objects.filter(pk=policy_pk).select_subclasses().first()
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user_obj = User.objects.get(pk=user_pk)
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for key, value in kwargs.items():
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setattr(user_obj, key, value)
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LOGGER.debug("Running policy `%s`#%s for user %s...", policy_obj.name,
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policy_obj.pk.hex, user_obj)
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return policy_obj.passes(user_obj)
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class PolicyEngine:
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"""Orchestrate policy checking, launch tasks and return result"""
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policies = None
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_group = None
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def __init__(self, policies):
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self.policies = policies
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def for_user(self, user):
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"""Check policies for user"""
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signatures = []
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kwargs = {
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'__password__': getattr(user, '__password__', None)
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}
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for policy in self.policies:
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signatures.append(_policy_engine_task.s(user.pk, policy.pk.hex, **kwargs))
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self._group = group(signatures)()
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return self
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@property
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def result(self):
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"""Get policy-checking result"""
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messages = []
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for policy_result in self._group.get():
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if isinstance(policy_result, (tuple, list)):
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policy_result, policy_message = policy_result
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messages.append(policy_message)
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if policy_result is False:
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return False, messages
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return True, messages
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