feat: 添加 hello_plugin 示例,包含插件结构、命令处理和测试用例

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README.md
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# AstrBot SDK
面向 AstrBot 插件作者的 v4 SDK。它提供三件核心能力
-`Star``Context``MessageEvent` 编写插件
-`astrbot-sdk dev --local` / `--watch` 做本地调试
-`astrbot_sdk.testing` 写不依赖真实 Core 的插件测试
## 5 分钟跑通第一个插件
### 1. 创建插件骨架
```bash
astrbot-sdk init my_plugin
cd my_plugin
```
生成后的目录结构:
```text
my_plugin/
├── README.md
├── plugin.yaml
├── requirements.txt
├── main.py
└── tests
└── test_plugin.py
```
### 2. 校验插件
```bash
astrbot-sdk validate --plugin-dir .
```
### 3. 本地运行一次
```bash
astrbot-sdk dev --local --plugin-dir . --event-text hello
```
### 4. 开启热重载
```bash
astrbot-sdk dev --local --watch --plugin-dir . --event-text hello
```
保存 `main.py` 后,本地 harness 会自动重载并重新派发这条消息。
## 最小插件示例
```python
from astrbot_sdk import Context, MessageEvent, Star, on_command
class MyPlugin(Star):
@on_command("hello", description="发送问候")
async def hello(self, event: MessageEvent, ctx: Context) -> None:
await event.reply("Hello, World!")
```
对应 `plugin.yaml`
```yaml
name: my_plugin
display_name: My Plugin
desc: 一个最小可运行的 AstrBot SDK 插件
author: your-name
version: 0.1.0
runtime:
python: "3.12"
components:
- class: main:MyPlugin
```
## 插件作者最常用的 API
### 事件和上下文
- `MessageEvent.text`: 当前消息文本
- `MessageEvent.reply(text)`: 回复文本
- `Context.plugin_id`: 当前插件 ID
- `Context.logger`: 已绑定插件 ID 的日志器
### 平台能力
- `ctx.platform.send(session, text)`
- `ctx.platform.send_image(session, image_url)`
- `ctx.platform.send_chain(session, chain)`
- `ctx.platform.get_members(session)`
### LLM
- `ctx.llm.chat(prompt)`
- `ctx.llm.chat_raw(prompt, ...)`
- `ctx.llm.stream_chat(prompt, ...)`
### 存储
- `ctx.db.get/set/delete/list`
- `ctx.memory.save/get/delete/search`
### 插件元数据和 HTTP
- `ctx.metadata.get_current_plugin()`
- `ctx.metadata.get_plugin_config()`
- `ctx.http.register_api(...)`
- `ctx.http.unregister_api(...)`
- `ctx.http.list_apis()`
## 本地调试
### 单次派发
```bash
astrbot-sdk dev --local --plugin-dir . --event-text hello
```
### 交互模式
```bash
astrbot-sdk dev --local --plugin-dir . --interactive
```
交互模式支持:
- `/session <id>`
- `/user <id>`
- `/platform <name>`
- `/group <id>`
- `/private`
- `/event <type>`
- `/exit`
### 热重载
```bash
astrbot-sdk dev --local --watch --plugin-dir . --interactive
```
适合边改边测。代码变更后会自动重建插件运行时。
## 测试插件
最小测试示例:
```python
import pytest
from astrbot_sdk.testing import MockContext, MockMessageEvent
from main import MyPlugin
@pytest.mark.asyncio
async def test_hello_handler():
plugin = MyPlugin()
ctx = MockContext(plugin_id="my_plugin")
event = MockMessageEvent(text="/hello", context=ctx)
await plugin.hello(event, ctx)
assert event.replies == ["Hello, World!"]
ctx.platform.assert_sent("Hello, World!")
```
运行:
```bash
python -m pytest tests/test_plugin.py -v
```
## 示例插件
面向插件作者的最小示例在:
- [examples/hello_plugin/README.md](examples/hello_plugin/README.md)
仓库里的 `test_plugin/new` 是运行时/集成测试夹具,不是作者入门模板。
## 常见问题
### 1. `validate` 通过了,但 `dev` 还是失败
通常是组件导入或实例化阶段异常。现在错误信息会包含:
- 插件名
- `plugin.yaml` 路径
- `components[i].class`
- 原始异常原因
优先检查:
- `plugin.yaml``components`
- 导入路径是否真实存在
- 组件类是否继承 `astrbot_sdk.Star`
- `__init__()` 是否做了会抛异常的工作
### 2. handler 参数为什么无法注入
默认支持:
- 按类型注入:`MessageEvent``Context`
- 按名字注入:`event``ctx``context`
- 命令参数字典中的同名字段
如果参数不在这几类里,请自己从 `event``ctx` 取。
### 3. capability schema 校验失败怎么看
错误会明确指出:
- 哪个 capability
- 输入还是输出校验失败
- 具体字段路径
- 期望类型和实际类型
## 下一步
1. 先跑通 [examples/hello_plugin/README.md](examples/hello_plugin/README.md)
2. 再看 `src-new/astrbot_sdk/testing.py` 里的 `PluginHarness` / `MockContext`
3. 需要更复杂的 capability、HTTP、metadata 示例时,再参考 `test_plugin/new`

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# Hello Plugin
这是给 AstrBot SDK 插件作者准备的最小示例。
## 目录结构
```text
hello_plugin/
├── plugin.yaml
├── requirements.txt
├── main.py
└── tests
└── test_plugin.py
```
## 能学到什么
- 如何定义一个 `Star` 插件
- 如何注册命令 handler
- 如何使用 `MessageEvent.reply()`
- 如何从 `Context` 里读取当前插件元数据
- 如何用 `MockContext` / `MockMessageEvent` 写插件测试
## 运行
在仓库根目录执行:
```bash
astrbot-sdk validate --plugin-dir examples/hello_plugin
astrbot-sdk dev --local --plugin-dir examples/hello_plugin --event-text hello
astrbot-sdk dev --local --watch --plugin-dir examples/hello_plugin --event-text hello
```
## 测试
```bash
python -m pytest examples/hello_plugin/tests/test_plugin.py -v
```
## 代码说明
- `hello`: 最小命令,收到 `hello` 时回复 `Hello, World!`
- `about`: 读取 `ctx.metadata.get_current_plugin()`,演示 capability 客户端的基础用法

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from astrbot_sdk import Context, MessageEvent, Star, on_command
class HelloPlugin(Star):
@on_command("hello", description="发送最小问候")
async def hello(self, event: MessageEvent, ctx: Context) -> None:
await event.reply("Hello, World!")
@on_command("about", description="返回当前插件信息")
async def about(self, event: MessageEvent, ctx: Context) -> None:
plugin = await ctx.metadata.get_current_plugin()
display_name = plugin.display_name if plugin is not None else ctx.plugin_id
await event.reply(f"我是 {display_name}")

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name: hello_plugin
display_name: Hello Plugin
desc: 一个适合插件作者入门的最小示例插件
author: your-name
version: 0.1.0
runtime:
python: "3.12"
components:
- class: main:HelloPlugin

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import pytest
from astrbot_sdk.testing import MockContext, MockMessageEvent
from main import HelloPlugin
@pytest.mark.asyncio
async def test_hello_handler() -> None:
plugin = HelloPlugin()
ctx = MockContext(plugin_id="hello_plugin")
event = MockMessageEvent(text="/hello", context=ctx)
await plugin.hello(event, ctx)
assert event.replies == ["Hello, World!"]
ctx.platform.assert_sent("Hello, World!")
@pytest.mark.asyncio
async def test_about_handler() -> None:
plugin = HelloPlugin()
ctx = MockContext(plugin_id="hello_plugin")
event = MockMessageEvent(text="/about", context=ctx)
await plugin.about(event, ctx)
assert any("hello_plugin" in reply for reply in event.replies)

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@@ -599,6 +599,41 @@ def _render_init_main_py(*, plugin_name: str) -> str:
)
def _render_init_readme(*, plugin_name: str) -> str:
return dedent(
f"""\
# {plugin_name}
一个最小可运行的 AstrBot SDK v4 插件。
## 目录结构
```
.
├── plugin.yaml
├── requirements.txt
├── main.py
└── tests
└── test_plugin.py
```
## 本地开发
```bash
astrbot-sdk validate --plugin-dir .
astrbot-sdk dev --local --plugin-dir . --event-text hello
astrbot-sdk dev --local --watch --plugin-dir . --event-text hello
```
## 运行测试
```bash
python -m pytest tests/test_plugin.py -v
```
"""
)
def _render_init_test_py(*, plugin_name: str) -> str:
class_name = _class_name_for_plugin(plugin_name)
return dedent(
@@ -701,6 +736,10 @@ def _init_plugin(name: str) -> None:
_render_init_main_py(plugin_name=plugin_name),
encoding="utf-8",
)
(target_dir / "README.md").write_text(
_render_init_readme(plugin_name=plugin_name),
encoding="utf-8",
)
(target_dir / "tests" / "test_plugin.py").write_text(
_render_init_test_py(plugin_name=plugin_name),
encoding="utf-8",

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test_plugin/new/README.md Normal file
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# test_plugin/new
这个目录是运行时与集成测试夹具,不是给插件作者直接照抄的入门模板。
它的目标是覆盖更多 SDK surface例如
- 生命周期
- LLM / DB / Memory / Platform / HTTP / Metadata client
- 自定义 capability
- schedule / event / message / command handler
如果你是在找最小可学习示例,请改看:
- `examples/hello_plugin/`

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@@ -55,6 +55,20 @@ def test_dev_help_lists_watch_option() -> None:
assert "--watch" in process.stdout
def test_init_plugin_template_includes_readme(tmp_path: Path, monkeypatch) -> None:
from astrbot_sdk.cli import _init_plugin
target = tmp_path / "demo_plugin"
monkeypatch.chdir(tmp_path)
_init_plugin(target.name)
assert (target / "README.md").exists()
assert "astrbot-sdk dev --local --watch" in (
target / "README.md"
).read_text(encoding="utf-8")
@pytest.mark.asyncio
async def test_plugin_harness_dispatches_sample_plugin() -> None:
from astrbot_sdk.testing import LocalRuntimeConfig, PluginHarness
@@ -85,6 +99,21 @@ async def test_plugin_harness_supports_metadata_and_http_commands() -> None:
)
@pytest.mark.asyncio
async def test_example_hello_plugin_dispatches_commands() -> None:
from astrbot_sdk.testing import LocalRuntimeConfig, PluginHarness
plugin_dir = _repo_root() / "examples" / "hello_plugin"
async with PluginHarness(LocalRuntimeConfig(plugin_dir=plugin_dir)) as harness:
hello_records = await harness.dispatch_text("hello")
about_records = await harness.dispatch_text("about")
assert any(record.text == "Hello, World!" for record in hello_records)
# about 命令返回 display_name "Hello Plugin",不是 name "hello_plugin"
assert any("Hello Plugin" in (record.text or "") for record in about_records)
@pytest.mark.asyncio
async def test_plugin_harness_reports_component_load_errors(tmp_path: Path) -> None:
from astrbot_sdk.testing import LocalRuntimeConfig, PluginHarness, _PluginLoadError