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hunjing/backend/app/models.py
T
chenxin 603a683c14 ✨ feat: WP-03 三界归真作用域与消息版本谱系(ADR-020 落地)
- 迁移 5:conversation.realm(默认真界,检查约束);message.realm 快照、canonized_at、parent_message_id 自引用与 variant_kind(origin/revision/candidate)
- 界域端点:GET conversation(realm/当前分支)与 POST realm(入境/出境显式切换,留审计——ADR-020 切换必须可见)
- 归真端点 POST /v1/messages/{id}/canonizations:scope 必须与消息界域一致(不一致 422);幂等(重复归真 200 原状态);境界归真产出 world.canonized Outbox 事件(世界知识候选入口,WP-04 消费);幻境归真仅标记试演记录
- 编辑版本 POST /v1/messages/{id}/revisions:新消息 variant=revision 引用原消息(markdown 修订同样经灵台引擎规范化),原消息永不修改
- 测试 44 项全绿(+8):界域快照、归真正/反/幂等、幻境试演、revision 原消息不变、跨域 401/403/404 fail-closed
2026-09-10 13:28:25 +08:00

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"""首批领域模型:身份、会话、服务账号、审计与 Outbox(WP-01)。
- 主键为带前缀的 UUIDv7 文本(ADR-015);Session ID 为 CSPRNG opaque(秘密不用 UUID)。
- 命名约定见 app/db/base.py(pk_/uq_/ix_/fk_,AGENTS.md 8.6)。
- AuditEvent 与 OutboxEvent 不可变:无 updated_at,修正写新记录(契约第 4.4 节)。
"""
from datetime import datetime
from typing import Any
from sqlalchemy import CheckConstraint, DateTime, ForeignKey, Index, String, func
from sqlalchemy.dialects.postgresql import JSONB
from sqlalchemy.orm import Mapped, mapped_column
from app.core.ids import new_id
from app.db.base import Base
class User(Base):
__tablename__ = "user"
id: Mapped[str] = mapped_column(String, primary_key=True, default=lambda: new_id("user_"))
email: Mapped[str] = mapped_column(String, nullable=False, unique=True)
display_name: Mapped[str] = mapped_column(String, nullable=False)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
updated_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now()
)
class PersonalDomain(Base):
__tablename__ = "personal_domain"
id: Mapped[str] = mapped_column(
String, primary_key=True, default=lambda: new_id("domain_")
)
user_id: Mapped[str] = mapped_column(
ForeignKey("user.id", ondelete="restrict"), nullable=False, index=True
)
name: Mapped[str] = mapped_column(String, nullable=False)
# 区域驻留(ADR-024 之前的数据驻留决策):默认区域,迁移走正式协议
data_region: Mapped[str] = mapped_column(String, nullable=False, default="default")
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
class Session(Base):
"""Web 会话:ID 为 CSPRNG opaque value,数据库只存校验值(ADR-015)。"""
__tablename__ = "session"
id: Mapped[str] = mapped_column(String, primary_key=True)
user_id: Mapped[str] = mapped_column(
ForeignKey("user.id", ondelete="cascade"), nullable=False, index=True
)
token_hash: Mapped[str] = mapped_column(String, nullable=False, unique=True)
csrf_token_hash: Mapped[str] = mapped_column(String, nullable=False)
expires_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, index=True
)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
revoked_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
class ServiceAccount(Base):
"""自动化账号:API key 明文只显示一次,只保存哈希、前缀、scope 与撤销状态。"""
__tablename__ = "service_account"
id: Mapped[str] = mapped_column(
String, primary_key=True, default=lambda: new_id("service_account_")
)
domain_id: Mapped[str] = mapped_column(
ForeignKey("personal_domain.id", ondelete="cascade"), nullable=False
)
name: Mapped[str] = mapped_column(String, nullable=False)
key_prefix: Mapped[str] = mapped_column(String, nullable=False, index=True)
key_hash: Mapped[str] = mapped_column(String, nullable=False)
scopes: Mapped[list[str]] = mapped_column(JSONB, nullable=False, default=list)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
revoked_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
__table_args__ = (Index("uq_service_account_domain_name", "domain_id", "name", unique=True),)
class AuditEvent(Base):
"""不可变审计链:状态与 Outbox 在同一事务提交(契约第 4.4 节)。"""
__tablename__ = "audit_event"
id: Mapped[str] = mapped_column(String, primary_key=True, default=lambda: new_id("audit_"))
occurred_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
actor_type: Mapped[str] = mapped_column(String, nullable=False)
actor_id: Mapped[str] = mapped_column(String, nullable=False)
action: Mapped[str] = mapped_column(String, nullable=False)
aggregate_type: Mapped[str] = mapped_column(String, nullable=False)
aggregate_id: Mapped[str] = mapped_column(String, nullable=False)
payload: Mapped[dict[str, Any] | None] = mapped_column(JSONB, nullable=True)
trace_id: Mapped[str | None] = mapped_column(String, nullable=True)
__table_args__ = (
# 聚合时间线是审计的主要查询路径(最左前缀覆盖聚合定位)
Index("ix_audit_event_aggregate", "aggregate_type", "aggregate_id", "occurred_at"),
Index("ix_audit_event_occurred_at", "occurred_at"),
)
class OutboxEvent(Base):
"""Transactional Outbox:已提交领域事实的可靠投递队列。"""
__tablename__ = "outbox_event"
id: Mapped[str] = mapped_column(String, primary_key=True, default=lambda: new_id("event_"))
occurred_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
aggregate_type: Mapped[str] = mapped_column(String, nullable=False)
aggregate_id: Mapped[str] = mapped_column(String, nullable=False)
event_type: Mapped[str] = mapped_column(String, nullable=False)
payload: Mapped[dict[str, Any]] = mapped_column(JSONB, nullable=False)
status: Mapped[str] = mapped_column(String, nullable=False, default="pending")
attempts: Mapped[int] = mapped_column(nullable=False, default=0)
delivered_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
__table_args__ = (
CheckConstraint(
"status IN ('pending', 'delivered', 'failed')",
name="status_values",
),
# 投递循环按状态+时间扫描待处理事件
Index("ix_outbox_event_status_occurred", "status", "occurred_at"),
Index("ix_outbox_event_aggregate", "aggregate_type", "aggregate_id"),
)
CONVERSATION_REALM_CK = CheckConstraint(
"realm IN ('reality', 'world', 'simulation')", name="realm_values"
)
class Conversation(Base):
"""对话容器:归属个人域(垂直切片 WP-03 最小集)。"""
__tablename__ = "conversation"
id: Mapped[str] = mapped_column(
String, primary_key=True, default=lambda: new_id("conversation_")
)
personal_domain_id: Mapped[str] = mapped_column(
ForeignKey("personal_domain.id", ondelete="cascade"), nullable=False, index=True
)
title: Mapped[str] = mapped_column(String, nullable=False, default="未命名对话")
realm: Mapped[str] = mapped_column(String, nullable=False, default="reality")
current_branch_id: Mapped[str | None] = mapped_column(
ForeignKey("branch.id", ondelete="set null", use_alter=True), nullable=True
)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
updated_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now(), onupdate=func.now()
)
__table_args__ = (CONVERSATION_REALM_CK,)
class Branch(Base):
"""对话分支:创建会话时生成默认主分支。"""
__tablename__ = "branch"
id: Mapped[str] = mapped_column(String, primary_key=True, default=lambda: new_id("branch_"))
conversation_id: Mapped[str] = mapped_column(
ForeignKey("conversation.id", ondelete="cascade"), nullable=False, index=True
)
title: Mapped[str] = mapped_column(String, nullable=False, default="主脉")
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
class Message(Base):
"""消息:content 为 canonical ContentBlock JSON(本切片为 Text/Markdown 子集)。"""
__tablename__ = "message"
id: Mapped[str] = mapped_column(String, primary_key=True, default=lambda: new_id("message_"))
conversation_id: Mapped[str] = mapped_column(
ForeignKey("conversation.id", ondelete="cascade"), nullable=False, index=True
)
branch_id: Mapped[str] = mapped_column(
ForeignKey("branch.id", ondelete="cascade"), nullable=False, index=True
)
role: Mapped[str] = mapped_column(String, nullable=False)
realm: Mapped[str] = mapped_column(String, nullable=False, default="reality")
canonized_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
parent_message_id: Mapped[str | None] = mapped_column(
ForeignKey("message.id", ondelete="set null"), nullable=True
)
variant_kind: Mapped[str] = mapped_column(String, nullable=False, default="origin")
content: Mapped[list[dict[str, Any]]] = mapped_column(JSONB, nullable=False)
parser_version: Mapped[str | None] = mapped_column(String, nullable=True)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
__table_args__ = (
CheckConstraint("role IN ('user', 'assistant', 'system', 'tool')", name="role_values"),
CheckConstraint(
"realm IN ('reality', 'world', 'simulation')", name="realm_values"
),
CheckConstraint(
"variant_kind IN ('origin', 'revision', 'candidate')", name="variant_kind_values"
),
)
class Run(Base):
"""Agent 执行:状态机见 Agent 运行时第 3 节;本切片空转即完成。"""
__tablename__ = "run"
id: Mapped[str] = mapped_column(String, primary_key=True, default=lambda: new_id("run_"))
personal_domain_id: Mapped[str] = mapped_column(
ForeignKey("personal_domain.id", ondelete="cascade"), nullable=False, index=True
)
conversation_id: Mapped[str | None] = mapped_column(
ForeignKey("conversation.id", ondelete="cascade"), nullable=True, index=True
)
status: Mapped[str] = mapped_column(String, nullable=False, default="queued")
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
completed_at: Mapped[datetime | None] = mapped_column(DateTime(timezone=True), nullable=True)
__table_args__ = (
CheckConstraint(
"status IN ('queued', 'running', 'waiting_approval', "
"'completed', 'failed', 'cancelled')",
name="status_values",
),
Index("ix_run_domain_status", "personal_domain_id", "status"),
)
class IdempotencyRecord(Base):
"""幂等键记录:按 认证主体+路由+键 隔离,保存请求哈希与结果引用(契约第 6 节)。"""
__tablename__ = "idempotency_record"
key: Mapped[str] = mapped_column(String, primary_key=True)
owner_domain_id: Mapped[str] = mapped_column(
ForeignKey("personal_domain.id", ondelete="cascade"), nullable=False
)
route: Mapped[str] = mapped_column(String, nullable=False)
request_hash: Mapped[str] = mapped_column(String, nullable=False)
response_status: Mapped[int] = mapped_column(nullable=False)
resource_ids: Mapped[dict[str, Any]] = mapped_column(JSONB, nullable=False, default=dict)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
__table_args__ = (
Index("uq_idempotency_owner_route_key", "owner_domain_id", "route", "key", unique=True),
)
class RunEvent(Base):
"""Run 事件流:持久化后可重放;sequence 在 Run 内单调(契约第 5 节)。"""
__tablename__ = "run_event"
id: Mapped[str] = mapped_column(String, primary_key=True, default=lambda: new_id("event_"))
run_id: Mapped[str] = mapped_column(
ForeignKey("run.id", ondelete="cascade"), nullable=False
)
sequence: Mapped[int] = mapped_column(nullable=False)
type: Mapped[str] = mapped_column(String, nullable=False)
data: Mapped[dict[str, Any]] = mapped_column(JSONB, nullable=False, default=dict)
created_at: Mapped[datetime] = mapped_column(
DateTime(timezone=True), nullable=False, server_default=func.now()
)
__table_args__ = (
CheckConstraint(
"type IN ('content.block.started', 'content.block.delta', 'content.block.progress', "
"'content.block.completed', 'content.block.failed', 'content.block.cancelled', "
"'message.completed', 'run.status.changed')",
name="type_values",
),
# Run 内 sequence 单调且唯一(重放去重的服务端保证)
Index("uq_run_event_run_sequence", "run_id", "sequence", unique=True),
)