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- Introduced platform client documentation in `docs/v4/clients/platform.md` detailing methods for sending messages, images, and managing group members. - Added example plugins for LLM chat and database functionalities in `docs/v4/examples/README.md`, `docs/v4/examples/llm-chat/README.md`, and `docs/v4/examples/database/README.md`. - Enhanced quickstart guide with links to new documentation and example plugins. - Implemented runtime contract tests to ensure compatibility of public capabilities and hooks.
8.7 KiB
8.7 KiB
LLM 对话插件示例
本示例演示如何创建一个功能完整的 AI 对话插件。
完整代码
plugin.yaml
name: llm_chat_demo
display_name: LLM 对话演示
desc: 一个支持上下文对话的 AI 聊天插件
author: your-name
version: 1.0.0
runtime:
python: "3.12"
components:
- class: main:LLMChatPlugin
main.py
"""LLM 对话插件示例。
功能演示:
- 简单对话
- 流式对话
- 带历史记录的对话
- 模型和参数控制
"""
from __future__ import annotations
from astrbot_sdk import Context, MessageEvent, Star, on_command
from astrbot_sdk.clients.llm import ChatMessage
class LLMChatPlugin(Star):
"""LLM 对话插件。"""
@on_command("chat", description="与 AI 对话")
async def chat(self, event: MessageEvent, ctx: Context) -> None:
"""简单对话示例。"""
prompt = event.text.removeprefix("/chat").strip()
if not prompt:
await event.reply("用法: /chat <问题>")
return
# 调用 LLM
reply = await ctx.llm.chat(prompt)
await event.reply(reply)
@on_command("stream", description="流式对话")
async def stream_chat(self, event: MessageEvent, ctx: Context) -> None:
"""流式对话示例。"""
prompt = event.text.removeprefix("/stream").strip()
if not prompt:
await event.reply("用法: /stream <问题>")
return
# 收集流式响应
chunks = []
async for chunk in ctx.llm.stream_chat(prompt):
chunks.append(chunk)
# 发送完整响应
full_response = "".join(chunks)
await event.reply(full_response)
@on_command("creative", description="创造性写作")
async def creative_chat(self, event: MessageEvent, ctx: Context) -> None:
"""使用更高温度的创造性对话。"""
prompt = event.text.removeprefix("/creative").strip()
if not prompt:
await event.reply("用法: /creative <主题>")
return
# 使用更高的温度增加创造性
reply = await ctx.llm.chat(
prompt,
temperature=0.9,
system="你是一个富有创意的作家,善于用生动的语言创作内容"
)
await event.reply(reply)
@on_command("ask", description="带历史的对话")
async def ask_with_history(self, event: MessageEvent, ctx: Context) -> None:
"""带对话历史的聊天。"""
prompt = event.text.removeprefix("/ask").strip()
if not prompt:
await event.reply("用法: /ask <问题>")
return
user_id = event.user_id or "unknown"
history_key = f"chat_history:{user_id}"
# 加载历史记录
history_data = await ctx.db.get(history_key) or []
history = [
ChatMessage(role=item["role"], content=item["content"])
for item in history_data
]
# 调用 LLM
reply = await ctx.llm.chat(prompt, history=history)
# 保存历史
history_data.append({"role": "user", "content": prompt})
history_data.append({"role": "assistant", "content": reply})
# 只保留最近 10 轮对话
if len(history_data) > 20:
history_data = history_data[-20:]
await ctx.db.set(history_key, history_data)
await event.reply(reply)
@on_command("clear", description="清除对话历史")
async def clear_history(self, event: MessageEvent, ctx: Context) -> None:
"""清除用户的对话历史。"""
user_id = event.user_id or "unknown"
history_key = f"chat_history:{user_id}"
await ctx.db.delete(history_key)
await event.reply("对话历史已清除")
@on_command("raw", description="获取完整响应信息")
async def raw_chat(self, event: MessageEvent, ctx: Context) -> None:
"""获取 LLM 的完整响应。"""
prompt = event.text.removeprefix("/raw").strip()
if not prompt:
await event.reply("用法: /raw <问题>")
return
# 获取完整响应
response = await ctx.llm.chat_raw(prompt)
# 构建响应信息
lines = [
f"📝 响应: {response.text}",
f"",
f"📊 Token 使用:",
f" - 输入: {response.usage.get('input_tokens', 'N/A') if response.usage else 'N/A'}",
f" - 输出: {response.usage.get('output_tokens', 'N/A') if response.usage else 'N/A'}",
f"",
f"🏁 结束原因: {response.finish_reason or 'N/A'}",
]
if response.tool_calls:
lines.append(f"🔧 工具调用: {len(response.tool_calls)} 个")
await event.reply("\n".join(lines))
requirements.txt
# 无额外依赖
功能说明
1. 简单对话 (/chat)
用户: /chat 你好
机器人: 你好!有什么可以帮助你的?
2. 流式对话 (/stream)
用户: /stream 讲一个短故事
机器人: [流式输出的故事内容...]
3. 创造性写作 (/creative)
用户: /creative 写一首关于春天的诗
机器人: [生成的诗歌...]
4. 带历史的对话 (/ask)
用户: /ask 我叫小明
机器人: 你好小明!
用户: /ask 你记得我的名字吗
机器人: 当然记得,你叫小明!
5. 完整响应信息 (/raw)
用户: /raw hello
机器人:
📝 响应: Hello! How can I help you today?
📊 Token 使用:
- 输入: 5
- 输出: 12
🏁 结束原因: stop
本地测试
# 创建插件目录
astrbot-sdk init llm-chat-demo
# 复制上述代码到对应文件
# 本地运行
astrbot-sdk dev --local --plugin-dir llm-chat-demo --interactive
# 在交互模式中测试
> /chat 你好
> /creative 写一首诗
测试代码
tests/test_plugin.py
import pytest
from pathlib import Path
from astrbot_sdk.testing import (
MockContext,
MockMessageEvent,
PluginHarness,
LocalRuntimeConfig,
)
class TestLLMChatPlugin:
"""LLM 对话插件测试。"""
@pytest.mark.asyncio
async def test_simple_chat(self):
"""测试简单对话。"""
from main import LLMChatPlugin
plugin = LLMChatPlugin()
ctx = MockContext(plugin_id="test")
event = MockMessageEvent(text="/chat 你好", context=ctx)
# 模拟 LLM 响应
ctx.llm.mock_response("你好!有什么可以帮助你的?")
await plugin.chat(event, ctx)
# 验证回复
assert "你好" in event.replies[0]
ctx.platform.assert_sent("你好!有什么可以帮助你的?")
@pytest.mark.asyncio
async def test_creative_chat(self):
"""测试创造性对话。"""
from main import LLMChatPlugin
plugin = LLMChatPlugin()
ctx = MockContext(plugin_id="test")
event = MockMessageEvent(text="/creative 写一首诗", context=ctx)
ctx.llm.mock_response("春风吹绿柳枝头...")
await plugin.creative_chat(event, ctx)
assert len(event.replies) == 1
@pytest.mark.asyncio
async def test_chat_with_history(self):
"""测试带历史的对话。"""
from main import LLMChatPlugin
plugin = LLMChatPlugin()
ctx = MockContext(plugin_id="test")
# 第一次对话
event1 = MockMessageEvent(text="/ask 我叫小明", context=ctx, user_id="user1")
ctx.llm.mock_response("你好小明!")
await plugin.ask_with_history(event1, ctx)
# 验证历史被保存
history = await ctx.db.get("chat_history:user1")
assert history is not None
assert len(history) == 2
# 第二次对话
ctx.llm.mock_response("你叫小明")
event2 = MockMessageEvent(text="/ask 我叫什么", context=ctx, user_id="user1")
await plugin.ask_with_history(event2, ctx)
@pytest.mark.asyncio
async def test_full_harness(self):
"""使用完整 harness 测试。"""
plugin_dir = Path(__file__).parent.parent
harness = PluginHarness(
LocalRuntimeConfig(plugin_dir=plugin_dir)
)
async with harness:
harness.router.enqueue_llm_response("测试响应")
records = await harness.dispatch_text("chat 测试")
assert any("测试响应" in (r.text or "") for r in records)
扩展建议
- 添加更多系统提示词:支持用户选择不同的 AI 人设
- 支持图片输入:使用
image_urls参数 - 工具调用:结合
tool_calls实现功能扩展 - 多模型支持:让用户选择不同的模型