添加公共工具:联网搜索(DuckDuckGo)和可视化图表(Mermaid)
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55
backend/app/main_graph/tools/common_tools.py
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55
backend/app/main_graph/tools/common_tools.py
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"""
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公共工具模块 - 联网搜索、可视化图表等公共功能
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Common Tools Module - Web search, visualization, etc.
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"""
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from langchain_core.tools import tool
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from typing import Optional
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@tool
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def web_search_tool(query: str, max_results: int = 5) -> str:
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"""
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联网搜索工具 - 无需 API Key,使用 DuckDuckGo 免费搜索
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Args:
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query: 搜索关键词或问题
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max_results: 返回结果数量,默认 5 条
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Returns:
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格式化的搜索结果,包含引用溯源
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"""
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try:
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from app.core import web_search
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return web_search(query, max_results)
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except Exception as e:
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return f"联网搜索出错:{str(e)}"
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@tool
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def generate_chart_tool(data_text: str, chart_type: str = "bar") -> str:
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"""
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可视化图表工具 - 生成 Mermaid 格式图表
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Args:
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data_text: 图表数据文本,格式:标题,标签1:值1,标签2:值2,...
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示例:月度销售额,1月:100,2月:150,3月:200
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chart_type: 图表类型,可选:bar(柱状图)、line(折线图)、pie(饼图)
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Returns:
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格式化的图表输出(Mermaid 格式)
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"""
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try:
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from app.core import generate_chart
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return generate_chart(data_text, chart_type)
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except Exception as e:
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return f"生成图表出错:{str(e)}\n\n请使用格式:标题,标签1:值1,标签2:值2,..."
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# 公共工具列表
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COMMON_TOOLS = [
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web_search_tool,
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generate_chart_tool
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]
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COMMON_TOOLS_BY_NAME = {tool.name: tool for tool in COMMON_TOOLS}
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