Sokel Plugin SDK — Python
用 Python 写 Sokel 插件。契约写在 sokel.yaml 里（语言中立），
sokel-gen 把它生成成 pydantic 模型与类型化的注册口；SDK 负责注册、传输、凭证、文件、心跳与重连。
async def issues_list(ctx: Ctx, in_: IssuesListIn) -> IssuesListOut:
issues = await client.list_issues(in_.project, in_.state)
return IssuesListOut(issues=issues, count=len(issues))
on_issues_list(p, issues_list)
in_.project 拼错是 IDE 里的红线，不是线上的一次失败调用——代码里没有任何 dict["key"]。
装
pip install sokel-plugin-sdk
go install github.com/sokel-dev/sokel-plugin-sdk/cmd/sokel-gen@latest # 生成器
sokel-gen 是个单文件二进制（Go 写的），只在生成时用到；跑插件时不需要它。
四步
sokel-gen init -lang python ./my-plugin
cd my-plugin
pip install -r requirements.txt
sokel-gen generate . # sokel.yaml → sokel_gen.py
python main.py
- 声明 ——
sokel.yaml：操作、事件、凭证、认证方式。格式见 docs/manifest.md。 - 生成 ——
sokel-gen generate .产出sokel_gen.py：每个操作一对XxxIn/XxxOut模型 和一个on_xxx(p, fn)；每个事件一个 payload 模型和一个trigger_xxx(ctx, event_id, payload)。 - 实现 —— handler 签名完全具体，可以是
async def也可以是普通函数。 - 连接 ——
asyncio.run(p.run())。插件出站连平台：无入站端口、无公网 IP、无防火墙洞。
能力一览
| 要做的事 | 怎么写 |
|---|---|
| 读凭证 | credential(ctx) → 生成的 Credential 模型 |
| 取入参文件的字节 | await ctx.fetch(in_.file) |
| 产出文件 | await ctx.upload(name, mime, data) → 放进出参 |
| 流式产出 | out.text(...) 逐帧给人看，out.vars(Out(...)) 给下游 |
| 推事件 | await trigger_message(ctx, event_id, MessageEvent(...)) |
| 常驻事件源 | p.register_source(id, label, fn)，循环里判 ctx.stopping.is_set() |
| 平台代收 webhook | p.register_webhook(fn)，返回 ok() / text(401, "...") |
| 协作式认证 | p.register_auth(start=…, poll=…, submit=…) |
| 会话型凭证刷新 | await ctx.update_credential({"session": "…"}) |
| 自报运行态 | ctx.report_status("auth_required", "…") |
配置
SDK 读 SOKEL_ 前缀的环境变量：
| 变量 | 必填 | 含义 |
|---|---|---|
SOKEL_ENDPOINT |
是 | nats://broker:4222，或 https:// 平台地址（经 /connect-info 发现 broker） |
SOKEL_TOKEN |
是 | 接入组 token（skp_…），平台据此认「插件 + 工作空间」 |
SOKEL_NATS_TOKEN |
否 | broker 的传输层鉴权 |
SOKEL_NATS_CA |
否 | tls:// broker 的自定义 CA |
SOKEL_INSTANCE_ID |
否 | 固定副本身份（默认按 token 指纹落盘复用） |
SOKEL_REGION |
否 | 副本的地域标注 |
凭证从不由插件存储：平台随每次调用把解析后的字段下发下来。
例子
examples/kitchen-sink 覆盖了全部形态——每种字段、文件、流式、
事件、webhook、协作式认证各一份，Python 与 Node 实现的是同一份声明。
cd examples/kitchen-sink/python
pip install -r requirements.txt
SOKEL_ENDPOINT=nats://localhost:4222 SOKEL_TOKEN=skp_xxx python main.py
开发本 SDK
uv venv && uv pip install -e '.[dev]'
python -m pytest -q
License
Apache-2.0.
1 maintainer
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