58 lines
1.7 KiB
Python
58 lines
1.7 KiB
Python
"""Stage Markers"""
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from dataclasses import dataclass
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from typing import TYPE_CHECKING, Optional
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from django.http.request import HttpRequest
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from structlog import get_logger
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from passbook.core.models import User
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from passbook.flows.models import Stage
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from passbook.policies.engine import PolicyEngine
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from passbook.policies.models import PolicyBinding
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if TYPE_CHECKING:
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from passbook.flows.planner import FlowPlan
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LOGGER = get_logger()
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@dataclass
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class StageMarker:
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"""Base stage marker class, no extra attributes, and has no special handler."""
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# pylint: disable=unused-argument
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def process(
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self, plan: "FlowPlan", stage: Stage, http_request: Optional[HttpRequest]
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) -> Optional[Stage]:
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"""Process callback for this marker. This should be overridden by sub-classes.
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If a stage should be removed, return None."""
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return stage
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@dataclass
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class ReevaluateMarker(StageMarker):
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"""Reevaluate Marker, forces stage's policies to be evaluated again."""
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binding: PolicyBinding
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user: User
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def process(
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self, plan: "FlowPlan", stage: Stage, http_request: Optional[HttpRequest]
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) -> Optional[Stage]:
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"""Re-evaluate policies bound to stage, and if they fail, remove from plan"""
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engine = PolicyEngine(self.binding, self.user)
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engine.use_cache = False
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if http_request:
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engine.request.http_request = http_request
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engine.request.context = plan.context
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engine.build()
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result = engine.result
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if result.passing:
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return stage
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LOGGER.warning(
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"f(plan_inst)[re-eval marker]: stage failed re-evaluation",
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stage=stage,
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messages=result.messages,
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)
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return None
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