A JupyterLab extension that bridges the cell UI to a local OpenCode Serve process. The extension is a dual package: a Python server extension exposed under /opencode-bridge/*, plus a TypeScript frontend that registers per-cell toolbars. Backend (Python, tornado) - Slice 1: config + auth + OpenCode HTTP client (tornado.httpclient, no aiohttp). 4 settings in schema/plugin.json (url, user, password, request timeout). - Slice 2: handlers for /hello, /health, /providers, /edit. - Slice 2.1 (correction): SessionManager with 1 notebook = 1 session mapping, async-safe via per-path locks, 404 recovery via invalidate(). Two new endpoints: GET /sessions, DELETE /session?notebook=<path>. - 32 pytest tests pass. Frontend (TypeScript, JupyterLab 4.6) - src/types.ts: CellContext, OpenCodeRequest/Response, OpenCodeSettings. - src/context/cell_context.ts: extract CellContext from a CodeCell + its parent NotebookPanel, structured error collection. - src/api/opencode_client.ts: callOpenCodeEdit, callOpenCodeProviders. - src/components/opencode_cell_footer.ts: OpenCodeCellFooter Widget implementing ICellFooter with 3 buttons (optimize / fix / edit), resolved via this.parent instanceof CodeCell. NOT cellToolbar (does not exist in JL 4.6) and NOT Widget.findParent (removed in @lumino/widgets 2.x). - src/components/opencode_cell_factory.ts: Cell.ContentFactory subclass returning the OpenCodeCellFooter. - src/components/opencode_installer.ts: installOpenCodeEverywhere patches every notebook (existing + new) to use the custom factory. - src/index.ts: registers the factory, loads settings, fetches /providers on activation and logs the list to the console. - 23 jest tests pass (mocked JupyterLab boundary, pnpm path safe). Settings - 6 fields: 3 auth (url/user/password) + 1 timeout + 2 model selection (provider/model). Provider list is fetched at startup from /opencode-bridge/providers and printed to the browser console so users can copy values into Settings Editor. Docs - design.md: 6 sections covering architecture, UI flow, API contract, TS skeletons, session management (v0.2.1 correction), and provider/model selection (v0.2.2 addition). - CLAUDE.md: agent guidance for working in this repo. - TODO.md: remaining work for Slices 4-7 + v0.4+ backlog. CI - Gitea release workflow at .github/workflows/build.yml. - Bark notification helper (non-fatal on failure). Generated artefacts ignored: opencode_bridge/labextension/, _version.py, *.tsbuildinfo, junit.xml, test.ipynb scratch notebook.
14 KiB
14 KiB
📑 1. 系统总体架构
采用 前端 UI 注入 + 本地 Server Extension 透传 的轻量双层架构:
┌────────────────────────────────────────────────────────────────────────┐
│ JupyterLab / Notebook v7 (前端 TS) │
│ │
│ ┌────────────────────────────────────────────────────────────────┐ │
│ │ Cell Component │ │
│ │ [CodeEditor] ─── (挂载) ───► [Cell Action Toolbar] │ │
│ │ │ (点击 🪄 智能编辑) │
│ │ ▼ │
│ │ [Inline Prompt Box] │ │
│ └───────────────────────────────────┬────────────────────────────┘ │
│ │ │
│ Context Provider 收集 │
│ (Target Cell, Error, Neighbors) │
│ │ │
└───────────────────────────────────────┼────────────────────────────────┘
│ REST / SSE Stream
▼
┌────────────────────────────────────────────────────────────────────────┐
│ Jupyter Server Extension (后端 Python) │
│ │
│ ┌────────────────────────────────────────────────────────────────┐ │
│ │ OpenCode Bridge Handler │ │
│ │ - 接收 Context & Prompt │ │
│ │ - 拼装标准 OpenCode API Payload │ │
│ │ - SSE 流式透传代理 (Stream Proxy) │ │
│ └───────────────────────────────────┬────────────────────────────┘ │
└───────────────────────────────────────┼────────────────────────────────┘
│ Local Socket / HTTP
▼
┌────────────────────────────────────────────────────────────────────────┐
│ OpenCode Serve 进程 │
└────────────────────────────────────────────────────────────────────────┘
🎨 2. 交互与UI流程设计
- 悬浮 Toolbar(常驻):在每个
CodeCell顶部渲染微型操作栏:
✨ 优化:自动提炼代码规范与性能。🐛 智能排错:(仅当 Cell 有 Error Output 时亮起)自动抓取 Traceback 并修复。🪄 智能编辑:展开内嵌 Prompt 输入框。
- Inline Prompt 框(按需展开):
- 用户点击
🪄 智能编辑后,在当前 Cell 下方平滑展开一个微型输入框(带Textarea+🚀 发送按钮)。
- 流式替换/Diff 预览:
- 点击发送后,支持打字机实时替换或在 Cell 下方出现
[ Accept ]/[ Reject ]临时 Diff 比对面板。
🔌 3. 接口契约设计 (API Contract)
接口:POST /opencode/v1/generate (支持 SSE 流式返回)
Request Payload (前端 Context Provider 打包发给 Server Extension):
{
"action": "custom_edit", // custom_edit | fix_error | optimize
"prompt": "把这段代码改为用 plotly 绘制交互式折线图",
"context": {
"notebook_path": "analysis/demo.ipynb",
"target_cell": {
"index": 3,
"code": "import matplotlib.pyplot as plt\nplt.plot([1, 2, 3])",
"error_output": "ModuleNotFoundError: No module named 'matplotlib'"
},
"surrounding_cells": [
{ "index": 2, "code": "import pandas as pd" }
]
}
}
Response (Server Extension 流式透传 OpenCode Serve 的 SSE 响应):
event: chunk
data: {"text": "import plotly.express as px\n"}
event: chunk
data: {"text": "fig = px.line(x=[1, 2, 3], y=[1, 2, 3])\nfig.show()"}
event: done
data: {"status": "success"}
🛠️ 4. 核心前端实现逻辑 (TypeScript)
以下是前端实现“Toolbar 注入”和“上下文抓取”的伪代码骨架,可直接作为开发参考:
src/context_provider.ts (上下文感知模块)
import { Notebook, NotebookTracker } from '@jupyterlab/notebook';
import { Cell } from '@jupyterlab/cells';
export interface CellContext {
notebookPath: string;
targetCode: string;
errorOutput?: string;
surroundingCells: string[];
}
export function extractCellContext(tracker: NotebookTracker, targetCell: Cell): CellContext | null {
const currentWidget = tracker.currentWidget;
if (!currentWidget) return null;
const notebook: Notebook = currentWidget.content;
const cells = notebook.widgets;
const targetIndex = cells.findIndex(c => c === targetCell);
// 1. 抓取当前 Cell 的错误输出
let errorMsg = '';
if (targetCell.model.type === 'code') {
const outputs = (targetCell.model as any).outputs;
for (let i = 0; i < outputs.length; i++) {
const out = outputs.get(i);
if (out.type === 'error') {
errorMsg += `${out.ename}: ${out.evalue}\n${(out.traceback || []).join('\n')}`;
}
}
}
// 2. 抓取前一个 Cell 的代码(上下文)
const prevCode = targetIndex > 0 ? cells[targetIndex - 1].model.sharedModel.getSource() : '';
return {
notebookPath: currentWidget.context.path,
targetCode: targetCell.model.sharedModel.getSource(),
errorOutput: errorMsg,
surroundingCells: [prevCode]
};
}
src/components/cell_toolbar.ts (工具栏与内嵌框注入)
import { Cell } from '@jupyterlab/cells';
export function injectOpenCodeActionBox(cell: Cell, onSendPrompt: (prompt: string) => void) {
// 避免重复注入
if (cell.node.querySelector('.opencode-toolbar')) return;
// 1. 创建 Toolbar 容器
const toolbar = document.createElement('div');
toolbar.className = 'opencode-toolbar';
toolbar.innerHTML = `
<button class="opencode-btn edit-btn">🪄 智能编辑</button>
`;
// 2. 绑定展开事件
toolbar.querySelector('.edit-btn')!.addEventListener('click', () => {
let promptBox = cell.node.querySelector('.opencode-inline-box') as HTMLDivElement;
if (promptBox) {
promptBox.style.display = promptBox.style.display === 'none' ? 'block' : 'none';
return;
}
// 动态创建 Inline Prompt 输入框
promptBox = document.createElement('div');
promptBox.className = 'opencode-inline-box';
promptBox.innerHTML = `
<textarea placeholder="输入提示词(例如:重构这段代码或添加注释...)"></textarea>
<div class="actions">
<button class="submit-btn">🚀 发送给 OpenCode</button>
</div>
`;
promptBox.querySelector('.submit-btn')!.addEventListener('click', () => {
const input = promptBox.querySelector('textarea')!.value;
if (input.trim()) onSendPrompt(input);
});
cell.node.appendChild(promptBox);
});
cell.node.insertBefore(toolbar, cell.node.firstChild);
}
🔗 5. Session 管理策略(v0.2.1 修正)
2026-07-22 修正:原 v0.2 设计
EditHandler采用"每请求一个 session + finally 清理"——这是错的。OpenCode 的 session 是有状态的对话上下文,每个 notebook 必须复用同一个 session,否则用户先优化 cell1、再编辑 cell2 时,AI 看不到前一次的结果。
5.1 核心规则
| 维度 | 决策 |
|---|---|
| 映射关系 | notebookPath(1 个)→ OpenCode sessionID(1 个) |
| 生命周期 | 首次 EditHandler 调用时 lazy create;显式 DELETE /session 才释放 |
| 并发 | 同 notebook 的并发请求用 asyncio.Lock 串行化 session 创建;消息发送并发无锁(OpenCode 端自己排队) |
| 失效恢复 | 当 send_message_sync 抛 OpenCodeError 且消息含 404/410 → 自动 invalidate 缓存,下次请求重新 create |
| 清理 | 不做自动释放。前端 notebook 关闭时不调 release(避免两个 tab 共享 session 时误杀)。用户可手动点"重置对话"触发 release |
| 跨重启 | Jupyter server 重启 → in-memory map 丢失 → OpenCode 端孤立 session 接受泄漏(v0.4 加启动清理) |
5.2 SessionManager 接口
class SessionManager:
def __init__(self, client_factory: Callable[[], OpenCodeClient]): ...
async def get_or_create(self, notebook_path: str) -> str:
"""Return existing sessionID, or create one. Async-safe via per-path lock."""
async def release(self, notebook_path: str) -> bool:
"""Delete session and remove from map. Returns True if session existed."""
def has_session(self, notebook_path: str) -> bool: ...
def list_sessions(self) -> list[dict]:
"""For debug: [{notebookPath, sessionId}, ...]"""
关键不变量:
get_or_create永远不返回 None 或抛 "not found"- 重复调用
get_or_create(same_path)→ 同一 sessionID release(path)后再get_or_create(path)→ 新 sessionID
5.3 HTTP 端点
| Method | Path | 作用 | 备注 |
|---|---|---|---|
GET |
/opencode-bridge/sessions |
列出所有 active session | debug 用 |
DELETE |
/opencode-bridge/session?notebook=<path> |
显式释放指定 notebook 的 session | URL-encode path |
为什么用 query param 而不是 path param:
- notebook path 可能含
/、空格、中文 url_path_join+ regex 捕获在含/的路径上行为不可控- query string 是 RFC 3986 标准做法,tornado 自动 decode
5.4 EditHandler 改造
改造前(错的):
create_session → send_message_sync → delete_session # 每个请求都这样
改造后(对的):
session_id = session_manager.get_or_create(notebook_path) # 首次创建,复用后续
send_message_sync(session_id, ...) # 不管 session
# 没有 delete — session 留着给下次
5.5 错误恢复
send_message_sync 失败时:
- 检查
OpenCodeError消息是否含 "404" 或 "session not found" - 是 →
session_manager.invalidate(notebook_path),下次get_or_create会重新创建 - 否 → 透传错误给前端
v0.2.1 不实现自动重试,只 invalidate。前端看到 502 后可重发。
5.6 未解决问题(v0.4+)
- TTL reaper:notebook 关闭后 session 永远不释放 → 改用 mtime 追踪 + 30 分钟 idle 自动 release
- 多 server 横向扩展:in-memory state 不能 scale → 改成 Redis 或 sticky session
- 启动清理:Jupyter 重启后调
GET /session列出 OpenCode 端的孤儿,逐个 delete - 并发 LLM 调用:当前两次
send_message_sync到同一 session 是串行(OpenCode 端排队)— 可加asyncio.Semaphore(per_session=1)显式控制
🎛 6. Provider/Model 选择(v0.2.2 新增)
2026-07-22:用户要求能在 settings 里选 OpenCode 的 provider 和 model,可选值从
GET /config/providers动态获取。
6.1 Schema 扩展
schema/plugin.json 加 2 个 string 字段:
"opencodeProvider": {
"type": "string",
"title": "OpenCode Provider",
"description": "Provider id (如 'anthropic' / 'openai')。可选项由启动时从 /opencode-bridge/providers 拉取并打到 console 列出。留空 = 用 OpenCode 默认。",
"default": ""
},
"opencodeModel": {
"type": "string",
"title": "OpenCode Model",
"description": "Model id (如 'claude-sonnet-4-20250514')。可选项见 console 日志或 /opencode-bridge/providers。留空 = 用 provider 默认。",
"default": ""
}
6.2 选值如何给用户
JupyterLab settings 是静态 JSON schema,没有原生 dynamic enum。v0.2.2 用最简方案:
- 启动时 fetch
/opencode-bridge/providers→ 把 provider/model 列表console.log出来 - 用户在 Settings Editor 里手填
- 后续 v0.4 考虑用 QuickPick 命令做交互式选择
6.3 数据流
Settings (JupyterLab)
│
├── opencodeProvider = "anthropic"
└── opencodeModel = "claude-sonnet-4-20250514"
│
▼ setOpenCodeRuntime()
Frontend (opencode_cell_footer.ts)
│
▼ build request body
POST /opencode-bridge/edit
{ mode, prompt, context, providerId, modelId }
│
▼ send_message_sync
OpenCode Serve 接受 model = { providerID, modelID }
6.4 不变量
- 留空字段("")→ 客户端不发
providerId/modelId→ server 也不加model字段到 OpenCode 请求 → OpenCode 用默认 - 用户在 settings 里设的值不会自动回写到 OpenCode——只是 request 级别的覆盖
- 改 settings 立即生效(下次 edit 请求就用新值);不需要重启 Jupyter