2026-07-02 03:22:12 +08:00
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"""领域事件 DTO。
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定义跨层传递的领域事件值对象,供 ``EventPublisherPort`` 发布与订阅者消费。
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事件载荷为不可变值对象(``dataclass(frozen=True)``),不泄露领域实体引用。
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"""
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from __future__ import annotations
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2026-07-06 20:49:35 +08:00
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import uuid
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2026-07-02 03:22:12 +08:00
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from dataclasses import dataclass
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from datetime import datetime
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2026-07-06 20:49:35 +08:00
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from typing import Literal
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2026-07-02 03:22:12 +08:00
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2026-07-06 20:49:35 +08:00
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from yuxi.channels.contract.dtos.channel import ChannelType
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2026-07-03 19:18:13 +08:00
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from yuxi.channels.contract.dtos.outbox import OutboxStatus
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2026-07-06 20:49:35 +08:00
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from yuxi.channels.contract.dtos.plugin import DomainEvent
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from yuxi.channels.contract.dtos.session import ChatType
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2026-07-03 19:18:13 +08:00
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from yuxi.channels.contract.errors import ValidationError
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2026-07-02 03:22:12 +08:00
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@dataclass(frozen=True)
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class OutboxStateChangedEvent:
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2026-07-03 19:18:13 +08:00
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"""发件箱状态变更事件(OBX-004)。
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2026-07-02 03:22:12 +08:00
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描述一条发件箱条目(``OutboxEntry``)的状态迁移,由应用层在 outbox
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状态机推进时(``markSent`` / ``markFailed`` / ``markSuppressed`` /
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``markSentUnconfirmed`` 等)产出,经 ``EventPublisherPort`` 分发给
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订阅者。状态值取自 ``OutboxStatus`` 枚举的字符串形式,便于跨层序列化
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与审计。
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字段:
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entry_id: 发件箱条目 ID(``OutboxEntry.outbox_id``)。
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old_state: 变更前状态(``OutboxStatus`` 字符串值)。
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new_state: 变更后状态(``OutboxStatus`` 字符串值)。
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reason: 变更原因(如投递成功、重试失败、栅栏抑制等)。
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occurred_at: 事件发生时间。
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"""
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entry_id: str
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2026-07-03 19:18:13 +08:00
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old_state: OutboxStatus
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new_state: OutboxStatus
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2026-07-02 03:22:12 +08:00
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reason: str
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occurred_at: datetime
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2026-07-03 19:18:13 +08:00
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def __post_init__(self) -> None:
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"""校验必填字段非空。
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``entry_id`` / ``old_state`` / ``new_state`` / ``reason`` 必须非空,
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在构造时即抛出 ``ValidationError``,避免空值事件传播到订阅者
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(INV-8)。
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"""
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if not self.entry_id:
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raise ValidationError("entry_id", "must not be empty")
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if not self.old_state:
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raise ValidationError("old_state", "must not be empty")
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if not self.new_state:
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raise ValidationError("new_state", "must not be empty")
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if not self.reason:
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raise ValidationError("reason", "must not be empty")
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2026-07-02 03:22:12 +08:00
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@dataclass(frozen=True)
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class OutboxEntryPurgedEvent:
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2026-07-03 19:18:13 +08:00
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"""发件箱条目被物理清理事件(OBX-005)。
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2026-07-02 03:22:12 +08:00
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描述一批发件箱条目(``OutboxEntry``)被物理删除(purge)的事件,由
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调度器定时清理 dead / sent 终态条目时产出,经 ``EventPublisherPort``
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分发给订阅者。``entry_ids`` 为本次被清理条目的业务 ID 列表,供下游
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做审计、统计与缓存失效等处理。
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字段:
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entry_ids: 被物理清理的发件箱条目业务 ID 列表(``OutboxEntry.outbox_id``)。
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occurred_at: 事件发生时间。
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"""
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2026-07-03 19:18:13 +08:00
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entry_ids: tuple[str, ...]
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2026-07-02 03:22:12 +08:00
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occurred_at: datetime
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2026-07-03 19:18:13 +08:00
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def __post_init__(self) -> None:
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"""校验 entry_ids 非空。
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``entry_ids`` 必须为非空元组,空列表的清理事件无意义,在构造时即
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抛出 ``ValidationError``,避免空事件传播到订阅者(INV-8)。
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"""
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if not self.entry_ids:
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raise ValidationError("entry_ids", "must not be empty")
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2026-07-02 03:22:12 +08:00
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2026-07-06 20:49:35 +08:00
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@dataclass(frozen=True)
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class ChannelSessionUpdatedEvent:
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"""渠道会话状态更新事件。
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描述渠道会话生命周期变更(创建、关闭、合并、转移所有者),由入站流水线
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或控制面处理器在事务提交后发布。
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字段:
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session_id: 渠道会话 ID。
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channel_type: 渠道类型。
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channel_account_id: 渠道账户 ID。
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update_type: 更新类型(created / closed / merged / transferred)。
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occurred_at: 事件发生时间。
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"""
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session_id: str
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channel_type: ChannelType
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channel_account_id: str
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update_type: Literal["created", "closed", "merged", "transferred"]
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occurred_at: datetime
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def __post_init__(self) -> None:
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"""校验必填字段与枚举范围。"""
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if not self.session_id:
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raise ValidationError("session_id", "must not be empty")
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if not self.channel_account_id:
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raise ValidationError("channel_account_id", "must not be empty")
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if self.channel_type is None or not self.channel_type:
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raise ValidationError("channel_type", "must not be empty")
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if self.update_type not in ("created", "closed", "merged", "transferred"):
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raise ValidationError(
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"update_type",
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"must be one of: created, closed, merged, transferred",
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)
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if self.occurred_at is None:
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raise ValidationError("occurred_at", "must not be None")
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if not isinstance(self.occurred_at, datetime):
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raise ValidationError("occurred_at", "must be a datetime")
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def toDomainEvent(self) -> DomainEvent:
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"""转换为契约层 ``DomainEvent``。"""
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return DomainEvent(
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event_id=str(uuid.uuid4()),
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event_type="ChannelSessionUpdated",
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payload={
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"session_id": self.session_id,
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"channel_type": str(self.channel_type),
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"channel_account_id": self.channel_account_id,
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"update_type": self.update_type,
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"occurred_at": self.occurred_at.isoformat(),
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},
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timestamp=self.occurred_at,
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trace_id=None,
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)
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@dataclass(frozen=True)
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class ChannelMessageReceivedEvent:
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"""渠道新用户消息到达事件。
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描述入站流水线解析到用户消息后产生的事件,供 SSE 连接推送最新消息提醒。
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字段:
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session_id: 渠道会话 ID。
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conversation_id: 内部会话 ID。
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channel_type: 渠道类型。
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chat_type: 会话类型(p2p / group)。
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content_preview: 脱敏后的消息内容预览(前 120 字符)。
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occurred_at: 事件发生时间。
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"""
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session_id: str
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conversation_id: str
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channel_type: ChannelType
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chat_type: ChatType
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content_preview: str
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occurred_at: datetime
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def __post_init__(self) -> None:
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"""校验必填字段与枚举范围。"""
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if not self.session_id:
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raise ValidationError("session_id", "must not be empty")
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if not self.conversation_id:
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raise ValidationError("conversation_id", "must not be empty")
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if self.channel_type is None or not self.channel_type:
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raise ValidationError("channel_type", "must not be empty")
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if self.chat_type not in (ChatType.P2P, ChatType.GROUP):
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raise ValidationError(
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"chat_type",
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"must be one of: p2p, group",
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)
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if self.content_preview is None or not self.content_preview:
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raise ValidationError("content_preview", "must not be empty")
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if self.occurred_at is None:
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raise ValidationError("occurred_at", "must not be None")
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if not isinstance(self.occurred_at, datetime):
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raise ValidationError("occurred_at", "must be a datetime")
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def toDomainEvent(self) -> DomainEvent:
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"""转换为契约层 ``DomainEvent``。"""
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return DomainEvent(
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event_id=str(uuid.uuid4()),
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event_type="ChannelMessageReceived",
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payload={
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"session_id": self.session_id,
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"conversation_id": self.conversation_id,
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"channel_type": str(self.channel_type),
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"chat_type": self.chat_type.value,
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"content_preview": self.content_preview,
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"occurred_at": self.occurred_at.isoformat(),
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},
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timestamp=self.occurred_at,
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trace_id=None,
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)
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@dataclass(frozen=True)
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class ChannelMessageSentEvent:
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"""渠道回复/管理员消息已发送事件。
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描述出站流水线将 assistant 或 admin 消息持久化完成后产生的事件。
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字段:
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session_id: 渠道会话 ID。
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conversation_id: 内部会话 ID。
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message_id: 消息 ID。
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role: 消息角色(assistant / admin)。
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channel_type: 渠道类型。
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occurred_at: 事件发生时间。
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"""
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session_id: str
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conversation_id: str
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message_id: str
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role: Literal["assistant", "admin"]
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channel_type: ChannelType
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occurred_at: datetime
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def __post_init__(self) -> None:
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"""校验必填字段与枚举范围。"""
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if not self.session_id:
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raise ValidationError("session_id", "must not be empty")
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if not self.conversation_id:
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raise ValidationError("conversation_id", "must not be empty")
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if not self.message_id:
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raise ValidationError("message_id", "must not be empty")
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if self.role not in ("assistant", "admin"):
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raise ValidationError(
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"role",
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"must be one of: assistant, admin",
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)
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if self.channel_type is None or not self.channel_type:
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raise ValidationError("channel_type", "must not be empty")
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if self.occurred_at is None:
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raise ValidationError("occurred_at", "must not be None")
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if not isinstance(self.occurred_at, datetime):
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raise ValidationError("occurred_at", "must be a datetime")
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def toDomainEvent(self) -> DomainEvent:
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"""转换为契约层 ``DomainEvent``。"""
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return DomainEvent(
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event_id=str(uuid.uuid4()),
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event_type="ChannelMessageSent",
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payload={
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"session_id": self.session_id,
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"conversation_id": self.conversation_id,
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"message_id": self.message_id,
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"role": self.role,
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"channel_type": str(self.channel_type),
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"occurred_at": self.occurred_at.isoformat(),
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},
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|
|
|
|
timestamp=self.occurred_at,
|
|
|
|
|
|
trace_id=None,
|
|
|
|
|
|
)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
__all__ = [
|
|
|
|
|
|
"OutboxStateChangedEvent",
|
|
|
|
|
|
"OutboxEntryPurgedEvent",
|
|
|
|
|
|
"ChannelSessionUpdatedEvent",
|
|
|
|
|
|
"ChannelMessageReceivedEvent",
|
|
|
|
|
|
"ChannelMessageSentEvent",
|
|
|
|
|
|
]
|