feat(approval): add safe risk disposition workflow
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caoxiaozhu
174
server/src/app/models/risk_disposition.py
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174
server/src/app/models/risk_disposition.py
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from __future__ import annotations
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import uuid
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from datetime import datetime
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from typing import Any
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from sqlalchemy import (
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CheckConstraint,
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DateTime,
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ForeignKeyConstraint,
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Index,
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Integer,
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String,
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Text,
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UniqueConstraint,
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func,
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)
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from sqlalchemy.orm import Mapped, mapped_column, relationship
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from sqlalchemy.types import JSON
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from app.db.base_class import Base
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def _new_id() -> str:
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return str(uuid.uuid4())
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class RiskDisposition(Base):
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"""风险观察的当前处置投影；裁决结论和处置生命周期彼此独立。"""
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__tablename__ = "risk_dispositions"
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__table_args__ = (
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UniqueConstraint(
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"tenant_id",
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"id",
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name="uq_risk_dispositions_tenant_id",
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),
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UniqueConstraint(
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"tenant_id",
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"observation_id",
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name="uq_risk_dispositions_tenant_observation",
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),
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CheckConstraint(
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"adjudication IN ('unreviewed', 'confirmed', 'false_positive')",
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name="ck_risk_dispositions_adjudication",
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),
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CheckConstraint(
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"lifecycle_status IN ('open', 'supplement_requested', "
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"'remediation_in_progress', 'waiver_requested', 'resolved')",
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name="ck_risk_dispositions_lifecycle",
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),
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CheckConstraint("version >= 0", name="ck_risk_dispositions_version"),
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ForeignKeyConstraint(
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["tenant_id", "observation_id"],
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["risk_observations.tenant_id", "risk_observations.id"],
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ondelete="RESTRICT",
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name="fk_risk_dispositions_tenant_observation",
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),
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Index(
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"ix_risk_dispositions_tenant_lifecycle_due",
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"tenant_id",
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"lifecycle_status",
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"due_at",
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),
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Index("ix_risk_dispositions_assignee", "tenant_id", "assignee"),
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)
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id: Mapped[str] = mapped_column(String(36), primary_key=True, default=_new_id)
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tenant_id: Mapped[str] = mapped_column(String(64), nullable=False)
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observation_id: Mapped[str] = mapped_column(String(36), nullable=False)
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adjudication: Mapped[str] = mapped_column(
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String(24),
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nullable=False,
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default="unreviewed",
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server_default="unreviewed",
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)
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lifecycle_status: Mapped[str] = mapped_column(
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String(32),
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nullable=False,
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default="open",
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server_default="open",
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)
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version: Mapped[int] = mapped_column(
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Integer,
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nullable=False,
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default=0,
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server_default="0",
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)
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assignee: Mapped[str | None] = mapped_column(String(120), nullable=True)
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due_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
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resolution: Mapped[str | None] = mapped_column(Text(), nullable=True)
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created_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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nullable=False,
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server_default=func.now(),
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)
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updated_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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nullable=False,
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server_default=func.now(),
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onupdate=func.now(),
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)
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observation = relationship("RiskObservation", back_populates="disposition")
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events = relationship(
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"RiskDispositionEvent",
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back_populates="disposition",
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order_by="asc(RiskDispositionEvent.version)",
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lazy="selectin",
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passive_deletes=True,
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)
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class RiskDispositionEvent(Base):
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"""只追加的风险处置事实；每个版本只对应一个类型化动作。"""
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__tablename__ = "risk_disposition_events"
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__table_args__ = (
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UniqueConstraint(
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"tenant_id",
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"request_id",
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name="uq_risk_disposition_events_tenant_request",
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),
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UniqueConstraint(
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"disposition_id",
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"version",
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name="uq_risk_disposition_events_version",
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),
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CheckConstraint(
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"action IN ('confirm', 'false_positive', 'request_supplement', "
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"'start_remediation', 'resolve', 'request_waiver')",
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name="ck_risk_disposition_events_action",
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),
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CheckConstraint("version > 0", name="ck_risk_disposition_events_version"),
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ForeignKeyConstraint(
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["tenant_id", "disposition_id"],
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["risk_dispositions.tenant_id", "risk_dispositions.id"],
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ondelete="RESTRICT",
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name="fk_risk_disposition_events_tenant_disposition",
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),
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ForeignKeyConstraint(
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["tenant_id", "observation_id"],
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["risk_observations.tenant_id", "risk_observations.id"],
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ondelete="RESTRICT",
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name="fk_risk_disposition_events_tenant_observation",
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),
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Index(
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"ix_risk_disposition_events_tenant_observation_time",
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"tenant_id",
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"observation_id",
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"created_at",
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),
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)
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id: Mapped[str] = mapped_column(String(36), primary_key=True, default=_new_id)
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tenant_id: Mapped[str] = mapped_column(String(64), nullable=False)
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disposition_id: Mapped[str] = mapped_column(String(36), nullable=False, index=True)
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observation_id: Mapped[str] = mapped_column(String(36), nullable=False)
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version: Mapped[int] = mapped_column(Integer, nullable=False)
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action: Mapped[str] = mapped_column(String(32), nullable=False)
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actor_id: Mapped[str] = mapped_column(String(120), nullable=False)
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actor_name: Mapped[str] = mapped_column(String(120), nullable=False)
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request_id: Mapped[str] = mapped_column(String(120), nullable=False)
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payload_fingerprint: Mapped[str] = mapped_column(String(64), nullable=False)
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comment: Mapped[str | None] = mapped_column(Text(), nullable=True)
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before_json: Mapped[dict[str, Any]] = mapped_column(JSON, nullable=False, default=dict)
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after_json: Mapped[dict[str, Any]] = mapped_column(JSON, nullable=False, default=dict)
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created_at: Mapped[datetime] = mapped_column(
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DateTime(timezone=True),
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nullable=False,
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server_default=func.now(),
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)
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disposition = relationship("RiskDisposition", back_populates="events")
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