AskaEth
4c9cabce1b
fix(channelbridge): 窗口准入落到车道头 + lane.go 按职责拆分(M23 复审 r1 P2)
P2-1(行为缺陷):窗口准入此前只在 prepareInbound 里算 `solo`,而 prepare 发生在
**窗口等待之后** —— 平台帧(action / 系统通知 / 我们自己的 message_sent 回执)照样
进窗、照样把滑动计时重置:一条回执就能把这一批的静默期一直续住(群友说了三句话,
她因为「撤回事件」迟迟不开口)。这与任务书「窗口只收 chat/image/voice/file」相反。
- `laneWindowAdmits(msg)` 成为**唯一准入判据**,只看结构化事实(ContentType +
isSystemNoticeMessage,绝不解析正文);
- `splitWindowItems` 在窗口等待阶段把到达的条目分成「进窗口」与「不进窗口」两半;
- 非准入帧**不建窗口、不重置计时**(首条即到达即发车),窗口中途到达的只收进 solos,
这一批发车后**原样回插队首**各自单跑(保序、不合并、不丢弃);
- prepareInbound 里的 `solo` 保留为第二道保险(适配器将来把平台事件标成 text 时,
仍会在组批前被切出去)。
P2-2(硬约束):lane.go 682 行 → 按职责纯搬移成 5 个文件(最大 246 行):
lane.go(车道类型与注册表)/ lane_queue.go(入队与取队列)/
lane_worker.go(单消费者与回合槽)/ lane_drop.go(丢弃与停机诚实)/
lane_owner.go(主人私聊判据与车道键)。语义零改动:去注释后的声明集合
(34 个顶层声明,含函数体/字段/常量值)逐字节全等;既有用例一条未改。
顺带:把两处「IsOwner() && !IsGroupChat()」的注释改成代码真正用的判据
(ownerPrivateLane = !msg.IsGroup() && actor.IsOwner()),并记下这处 P3 分叉。
验证:全树 build/vet/test 全绿(73 包 ok);三包 -race 全绿;
新增 4 条准入用例在「准入失效」变异下三条必红、对照组保持绿。
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