greatmengqi
edf345cd72
- Freeze all config models (AppConfig + 15 sub-configs) with frozen=True - Purify from_file() — remove 9 load_*_from_dict() side-effect calls - Replace mtime/reload/push/pop machinery with single ContextVar + init_app_config() - Delete 10 sub-module globals and their getters/setters/loaders - Migrate 50+ consumers from get_*_config() to get_app_config().xxx - Expand DeerFlowContext: app_config + thread_id + agent_name (frozen dataclass) - Wire into Gateway runtime (worker.py) and DeerFlowClient via context= parameter - Remove sandbox_id from runtime.context — flows through ThreadState.sandbox only - Middleware/tools access runtime.context directly via Runtime[DeerFlowContext] generic - resolve_context() retained at server entry points for LangGraph Server fallback
96 lines
2.4 KiB
Python
96 lines
2.4 KiB
Python
"""
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Web Search Tool - Search the web using DuckDuckGo (no API key required).
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"""
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import json
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import logging
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from langchain.tools import tool
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from deerflow.config.app_config import AppConfig
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logger = logging.getLogger(__name__)
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def _search_text(
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query: str,
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max_results: int = 5,
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region: str = "wt-wt",
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safesearch: str = "moderate",
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) -> list[dict]:
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"""
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Execute text search using DuckDuckGo.
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Args:
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query: Search keywords
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max_results: Maximum number of results
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region: Search region
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safesearch: Safe search level
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Returns:
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List of search results
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"""
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try:
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from ddgs import DDGS
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except ImportError:
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logger.error("ddgs library not installed. Run: pip install ddgs")
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return []
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ddgs = DDGS(timeout=30)
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try:
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results = ddgs.text(
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query,
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region=region,
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safesearch=safesearch,
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max_results=max_results,
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)
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return list(results) if results else []
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except Exception as e:
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logger.error(f"Failed to search web: {e}")
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return []
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@tool("web_search", parse_docstring=True)
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def web_search_tool(
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query: str,
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max_results: int = 5,
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) -> str:
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"""Search the web for information. Use this tool to find current information, news, articles, and facts from the internet.
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Args:
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query: Search keywords describing what you want to find. Be specific for better results.
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max_results: Maximum number of results to return. Default is 5.
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"""
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config = AppConfig.current().get_tool_config("web_search")
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# Override max_results from config if set
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if config is not None and "max_results" in config.model_extra:
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max_results = config.model_extra.get("max_results", max_results)
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results = _search_text(
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query=query,
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max_results=max_results,
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)
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if not results:
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return json.dumps({"error": "No results found", "query": query}, ensure_ascii=False)
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normalized_results = [
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{
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"title": r.get("title", ""),
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"url": r.get("href", r.get("link", "")),
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"content": r.get("body", r.get("snippet", "")),
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}
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for r in results
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]
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output = {
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"query": query,
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"total_results": len(normalized_results),
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"results": normalized_results,
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}
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return json.dumps(output, indent=2, ensure_ascii=False)
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