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- 11 sessions from basic agent loop to autonomous teams - Python MVP implementations for each session - Mental-model-first docs in en/zh/ja - Interactive web platform with step-through visualizations - Incremental architecture: each session adds one mechanism
191 lines
6.9 KiB
Markdown
191 lines
6.9 KiB
Markdown
# s10: Team Protocols (团队协议)
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> 同一个 request_id 握手模式驱动了关机和计划审批两种协议 -- 一个 FSM, 两种应用。
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## 问题
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在 s09 中, 队友可以工作和通信, 但没有结构化的协调。出现了两个问题:
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**关机**: 如何干净地停止一个队友? 直接杀线程会留下写了一半的文件和错误状态的 config.json。优雅关机需要握手: 领导发起请求, 队友决定是批准 (完成并退出) 还是拒绝 (继续工作)。
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**计划审批**: 如何控制执行门槛? 当领导说 "重构认证模块", 队友会立即开始。对于高风险变更, 领导应该在执行开始前审查计划。初级提出方案, 高级批准。
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两个问题共享相同的结构: 一方发送带唯一 ID 的请求, 另一方引用该 ID 作出响应。一个有限状态机 (FSM) 跟踪每个请求经历 pending -> approved | rejected 的状态变迁。
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## 解决方案
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```
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Shutdown Protocol Plan Approval Protocol
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================== ======================
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Lead Teammate Teammate Lead
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|--shutdown_req-->| |--plan_req------>|
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| {req_id:"abc"} | | {req_id:"xyz"} |
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|<--shutdown_resp-| |<--plan_resp-----|
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| {req_id:"abc", | | {req_id:"xyz", |
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| approve:true} | | approve:true} |
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v v v v
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tracker["abc"] exits proceeds tracker["xyz"]
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= approved = approved
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Shared FSM (identical for both protocols):
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[pending] --approve--> [approved]
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[pending] --reject---> [rejected]
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Trackers:
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shutdown_requests = {req_id: {target, status}}
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plan_requests = {req_id: {from, plan, status}}
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```
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## 工作原理
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1. 领导通过生成 request_id 并通过收件箱发送 shutdown_request 来发起关机。
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```python
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shutdown_requests = {}
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def handle_shutdown_request(teammate: str) -> str:
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req_id = str(uuid.uuid4())[:8]
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shutdown_requests[req_id] = {
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"target": teammate, "status": "pending",
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}
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BUS.send("lead", teammate, "Please shut down gracefully.",
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"shutdown_request", {"request_id": req_id})
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return f"Shutdown request {req_id} sent (status: pending)"
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```
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2. 队友在收件箱中收到请求, 调用 `shutdown_response` 工具来批准或拒绝。
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```python
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if tool_name == "shutdown_response":
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req_id = args["request_id"]
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approve = args["approve"]
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if req_id in shutdown_requests:
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shutdown_requests[req_id]["status"] = \
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"approved" if approve else "rejected"
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BUS.send(sender, "lead", args.get("reason", ""),
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"shutdown_response",
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{"request_id": req_id, "approve": approve})
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return f"Shutdown {'approved' if approve else 'rejected'}"
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```
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3. 队友的循环检查是否批准了关机并退出。
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```python
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if (block.name == "shutdown_response"
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and block.input.get("approve")):
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should_exit = True
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# ...
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member["status"] = "shutdown" if should_exit else "idle"
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```
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4. 计划审批遵循完全相同的模式。队友提交计划时生成一个 request_id。
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```python
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plan_requests = {}
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if tool_name == "plan_approval":
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plan_text = args.get("plan", "")
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req_id = str(uuid.uuid4())[:8]
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plan_requests[req_id] = {
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"from": sender, "plan": plan_text,
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"status": "pending",
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}
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BUS.send(sender, "lead", plan_text,
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"plan_approval_request",
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{"request_id": req_id, "plan": plan_text})
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return f"Plan submitted (request_id={req_id})"
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```
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5. 领导审查后使用同一个 request_id 作出响应。
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```python
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def handle_plan_review(request_id, approve, feedback=""):
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req = plan_requests.get(request_id)
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if not req:
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return f"Error: Unknown request_id '{request_id}'"
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req["status"] = "approved" if approve else "rejected"
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BUS.send("lead", req["from"], feedback,
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"plan_approval_response",
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{"request_id": request_id,
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"approve": approve,
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"feedback": feedback})
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return f"Plan {req['status']} for '{req['from']}'"
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```
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6. 两个协议使用同一个 `plan_approval` 工具名, 有两种模式: 队友提交 (无 request_id), 领导审查 (带 request_id)。
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```python
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# Lead tool dispatch:
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"plan_approval": lambda **kw: handle_plan_review(
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kw["request_id"], kw["approve"],
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kw.get("feedback", "")),
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# Teammate: submit mode (generate request_id)
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```
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## 核心代码
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双协议处理器 (来自 `agents/s10_team_protocols.py`):
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```python
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shutdown_requests = {}
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plan_requests = {}
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# -- Shutdown --
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def handle_shutdown_request(teammate):
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req_id = str(uuid.uuid4())[:8]
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shutdown_requests[req_id] = {
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"target": teammate, "status": "pending"
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}
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BUS.send("lead", teammate,
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"Please shut down gracefully.",
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"shutdown_request",
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{"request_id": req_id})
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# -- Plan Approval --
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def handle_plan_review(request_id, approve, feedback=""):
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req = plan_requests[request_id]
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req["status"] = "approved" if approve else "rejected"
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BUS.send("lead", req["from"], feedback,
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"plan_approval_response",
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{"request_id": request_id,
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"approve": approve})
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# Both use the same FSM:
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# pending -> approved | rejected
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# Both correlate by request_id across async inboxes
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```
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## 相对 s09 的变更
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| 组件 | 之前 (s09) | 之后 (s10) |
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|----------------|------------------|--------------------------------------|
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| Tools | 9 | 12 (+shutdown_req/resp +plan) |
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| 关机 | 仅自然退出 | 请求-响应握手 |
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| 计划门控 | 无 | 提交/审查与审批 |
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| 请求追踪 | 无 | 两个 tracker 字典 |
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| 关联 | 无 | 每个请求一个 request_id |
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| FSM | 无 | pending -> approved/rejected |
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## 设计原理
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request_id 关联模式将任何异步交互转化为可追踪的有限状态机。同一个三状态机 (pending -> approved/rejected) 适用于关机、计划审批或任何未来的协议。这就是为什么一个模式能处理多种协议 -- FSM 不关心它在审批什么。request_id 在异步收件箱中提供关联, 消息可能乱序到达, 使该模式对智能体间的时序差异具有鲁棒性。
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## 试一试
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```sh
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cd learn-claude-code
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python agents/s10_team_protocols.py
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```
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可以尝试的提示:
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1. `Spawn alice as a coder. Then request her shutdown.`
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2. `List teammates to see alice's status after shutdown approval`
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3. `Spawn bob with a risky refactoring task. Review and reject his plan.`
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4. `Spawn charlie, have him submit a plan, then approve it.`
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5. 输入 `/team` 监控状态
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