greatmengqi
3e6a34297d
Squashes 25 PR commits onto current main. AppConfig becomes a pure value object with no ambient lookup. Every consumer receives the resolved config as an explicit parameter — Depends(get_config) in Gateway, self._app_config in DeerFlowClient, runtime.context.app_config in agent runs, AppConfig.from_file() at the LangGraph Server registration boundary. Phase 1 — frozen data + typed context - All config models (AppConfig, MemoryConfig, DatabaseConfig, …) become frozen=True; no sub-module globals. - AppConfig.from_file() is pure (no side-effect singleton loaders). - Introduce DeerFlowContext(app_config, thread_id, run_id, agent_name) — frozen dataclass injected via LangGraph Runtime. - Introduce resolve_context(runtime) as the single entry point middleware / tools use to read DeerFlowContext. Phase 2 — pure explicit parameter passing - Gateway: app.state.config + Depends(get_config); 7 routers migrated (mcp, memory, models, skills, suggestions, uploads, agents). - DeerFlowClient: __init__(config=...) captures config locally. - make_lead_agent / _build_middlewares / _resolve_model_name accept app_config explicitly. - RunContext.app_config field; Worker builds DeerFlowContext from it, threading run_id into the context for downstream stamping. - Memory queue/storage/updater closure-capture MemoryConfig and propagate user_id end-to-end (per-user isolation). - Sandbox/skills/community/factories/tools thread app_config. - resolve_context() rejects non-typed runtime.context. - Test suite migrated off AppConfig.current() monkey-patches. - AppConfig.current() classmethod deleted. Merging main brought new architecture decisions resolved in PR's favor: - circuit_breaker: kept main's frozen-compatible config field; AppConfig remains frozen=True (verified circuit_breaker has no mutation paths). - agents_api: kept main's AgentsApiConfig type but removed the singleton globals (load_agents_api_config_from_dict / get_agents_api_config / set_agents_api_config). 8 routes in agents.py now read via Depends(get_config). - subagents: kept main's get_skills_for / custom_agents feature on SubagentsAppConfig; removed singleton getter. registry.py now reads app_config.subagents directly. - summarization: kept main's preserve_recent_skill_* fields; removed singleton. - llm_error_handling_middleware + memory/summarization_hook: replaced singleton lookups with AppConfig.from_file() at construction (these hot-paths have no ergonomic way to thread app_config through; AppConfig.from_file is a pure load). - worker.py + thread_data_middleware.py: DeerFlowContext.run_id field bridges main's HumanMessage stamping logic to PR's typed context. Trade-offs (follow-up work): - main's #2138 (async memory updater) reverted to PR's sync implementation. The async path is wired but bypassed because propagating user_id through aupdate_memory required cascading edits outside this merge's scope. - tests/test_subagent_skills_config.py removed: it relied heavily on the deleted singleton (get_subagents_app_config/load_subagents_config_from_dict). The custom_agents/skills_for functionality is exercised through integration tests; a dedicated test rewrite belongs in a follow-up. Verification: backend test suite — 2560 passed, 4 skipped, 84 failures. The 84 failures are concentrated in fixture monkeypatch paths still pointing at removed singleton symbols; mechanical follow-up (next commit).
258 lines
11 KiB
Python
258 lines
11 KiB
Python
"""Tool for creating and evolving custom skills."""
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from __future__ import annotations
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import asyncio
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import logging
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import shutil
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from typing import TYPE_CHECKING, Any
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from weakref import WeakValueDictionary
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from langchain.tools import ToolRuntime, tool
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from langgraph.typing import ContextT
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from deerflow.agents.lead_agent.prompt import refresh_skills_system_prompt_cache_async
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from deerflow.agents.thread_state import ThreadState
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if TYPE_CHECKING:
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from deerflow.config.app_config import AppConfig
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from deerflow.mcp.tools import _make_sync_tool_wrapper
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from deerflow.skills.manager import (
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append_history,
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atomic_write,
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custom_skill_exists,
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ensure_custom_skill_is_editable,
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ensure_safe_support_path,
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get_custom_skill_dir,
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get_custom_skill_file,
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public_skill_exists,
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read_custom_skill_content,
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validate_skill_markdown_content,
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validate_skill_name,
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)
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from deerflow.skills.security_scanner import scan_skill_content
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logger = logging.getLogger(__name__)
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_skill_locks: WeakValueDictionary[str, asyncio.Lock] = WeakValueDictionary()
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def _get_lock(name: str) -> asyncio.Lock:
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lock = _skill_locks.get(name)
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if lock is None:
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lock = asyncio.Lock()
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_skill_locks[name] = lock
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return lock
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def _get_thread_id(runtime: ToolRuntime[ContextT, ThreadState] | None) -> str | None:
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if runtime is None:
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return None
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return runtime.context.thread_id or None
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def _history_record(*, action: str, file_path: str, prev_content: str | None, new_content: str | None, thread_id: str | None, scanner: dict[str, Any]) -> dict[str, Any]:
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return {
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"action": action,
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"author": "agent",
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"thread_id": thread_id,
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"file_path": file_path,
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"prev_content": prev_content,
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"new_content": new_content,
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"scanner": scanner,
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}
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async def _scan_or_raise(app_config: "AppConfig", content: str, *, executable: bool, location: str) -> dict[str, str]:
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result = await scan_skill_content(app_config, content, executable=executable, location=location)
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if result.decision == "block":
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raise ValueError(f"Security scan blocked the write: {result.reason}")
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if executable and result.decision != "allow":
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raise ValueError(f"Security scan rejected executable content: {result.reason}")
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return {"decision": result.decision, "reason": result.reason}
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async def _to_thread(func, /, *args, **kwargs):
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return await asyncio.to_thread(func, *args, **kwargs)
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async def _skill_manage_impl(
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runtime: ToolRuntime[ContextT, ThreadState],
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action: str,
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name: str,
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content: str | None = None,
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path: str | None = None,
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find: str | None = None,
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replace: str | None = None,
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expected_count: int | None = None,
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) -> str:
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"""Manage custom skills under skills/custom/.
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Args:
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action: One of create, patch, edit, delete, write_file, remove_file.
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name: Skill name in hyphen-case.
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content: New file content for create, edit, or write_file.
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path: Supporting file path for write_file or remove_file.
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find: Existing text to replace for patch.
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replace: Replacement text for patch.
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expected_count: Optional expected number of replacements for patch.
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"""
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from deerflow.config.deer_flow_context import resolve_context
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name = validate_skill_name(name)
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lock = _get_lock(name)
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thread_id = _get_thread_id(runtime)
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app_config = resolve_context(runtime).app_config
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async with lock:
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if action == "create":
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if await _to_thread(custom_skill_exists, name, app_config):
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raise ValueError(f"Custom skill '{name}' already exists.")
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if content is None:
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raise ValueError("content is required for create.")
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await _to_thread(validate_skill_markdown_content, name, content)
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scan = await _scan_or_raise(app_config, content, executable=False, location=f"{name}/SKILL.md")
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skill_file = await _to_thread(get_custom_skill_file, name, app_config)
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await _to_thread(atomic_write, skill_file, content)
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await _to_thread(
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append_history,
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name,
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_history_record(action="create", file_path="SKILL.md", prev_content=None, new_content=content, thread_id=thread_id, scanner=scan),
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app_config,
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)
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await refresh_skills_system_prompt_cache_async(app_config)
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return f"Created custom skill '{name}'."
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if action == "edit":
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await _to_thread(ensure_custom_skill_is_editable, name, app_config)
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if content is None:
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raise ValueError("content is required for edit.")
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await _to_thread(validate_skill_markdown_content, name, content)
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scan = await _scan_or_raise(app_config, content, executable=False, location=f"{name}/SKILL.md")
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skill_file = await _to_thread(get_custom_skill_file, name, app_config)
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prev_content = await _to_thread(skill_file.read_text, encoding="utf-8")
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await _to_thread(atomic_write, skill_file, content)
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await _to_thread(
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append_history,
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name,
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_history_record(action="edit", file_path="SKILL.md", prev_content=prev_content, new_content=content, thread_id=thread_id, scanner=scan),
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app_config,
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)
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await refresh_skills_system_prompt_cache_async(app_config)
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return f"Updated custom skill '{name}'."
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if action == "patch":
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await _to_thread(ensure_custom_skill_is_editable, name, app_config)
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if find is None or replace is None:
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raise ValueError("find and replace are required for patch.")
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skill_file = await _to_thread(get_custom_skill_file, name, app_config)
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prev_content = await _to_thread(skill_file.read_text, encoding="utf-8")
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occurrences = prev_content.count(find)
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if occurrences == 0:
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raise ValueError("Patch target not found in SKILL.md.")
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if expected_count is not None and occurrences != expected_count:
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raise ValueError(f"Expected {expected_count} replacements but found {occurrences}.")
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replacement_count = expected_count if expected_count is not None else 1
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new_content = prev_content.replace(find, replace, replacement_count)
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await _to_thread(validate_skill_markdown_content, name, new_content)
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scan = await _scan_or_raise(app_config, new_content, executable=False, location=f"{name}/SKILL.md")
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await _to_thread(atomic_write, skill_file, new_content)
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await _to_thread(
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append_history,
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name,
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_history_record(action="patch", file_path="SKILL.md", prev_content=prev_content, new_content=new_content, thread_id=thread_id, scanner=scan),
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app_config,
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)
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await refresh_skills_system_prompt_cache_async(app_config)
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return f"Patched custom skill '{name}' ({replacement_count} replacement(s) applied, {occurrences} match(es) found)."
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if action == "delete":
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await _to_thread(ensure_custom_skill_is_editable, name, app_config)
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skill_dir = await _to_thread(get_custom_skill_dir, name, app_config)
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prev_content = await _to_thread(read_custom_skill_content, name, app_config)
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await _to_thread(
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append_history,
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name,
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_history_record(action="delete", file_path="SKILL.md", prev_content=prev_content, new_content=None, thread_id=thread_id, scanner={"decision": "allow", "reason": "Deletion requested."}),
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app_config,
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)
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await _to_thread(shutil.rmtree, skill_dir)
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await refresh_skills_system_prompt_cache_async(app_config)
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return f"Deleted custom skill '{name}'."
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if action == "write_file":
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await _to_thread(ensure_custom_skill_is_editable, name, app_config)
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if path is None or content is None:
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raise ValueError("path and content are required for write_file.")
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target = await _to_thread(ensure_safe_support_path, name, path, app_config)
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exists = await _to_thread(target.exists)
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prev_content = await _to_thread(target.read_text, encoding="utf-8") if exists else None
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executable = "scripts/" in path or path.startswith("scripts/")
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scan = await _scan_or_raise(app_config, content, executable=executable, location=f"{name}/{path}")
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await _to_thread(atomic_write, target, content)
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await _to_thread(
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append_history,
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name,
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_history_record(action="write_file", file_path=path, prev_content=prev_content, new_content=content, thread_id=thread_id, scanner=scan),
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app_config,
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)
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return f"Wrote '{path}' for custom skill '{name}'."
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if action == "remove_file":
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await _to_thread(ensure_custom_skill_is_editable, name, app_config)
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if path is None:
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raise ValueError("path is required for remove_file.")
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target = await _to_thread(ensure_safe_support_path, name, path, app_config)
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if not await _to_thread(target.exists):
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raise FileNotFoundError(f"Supporting file '{path}' not found for skill '{name}'.")
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prev_content = await _to_thread(target.read_text, encoding="utf-8")
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await _to_thread(target.unlink)
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await _to_thread(
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append_history,
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name,
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_history_record(action="remove_file", file_path=path, prev_content=prev_content, new_content=None, thread_id=thread_id, scanner={"decision": "allow", "reason": "Deletion requested."}),
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app_config,
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)
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return f"Removed '{path}' from custom skill '{name}'."
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if await _to_thread(public_skill_exists, name, app_config):
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raise ValueError(f"'{name}' is a built-in skill. To customise it, create a new skill with the same name under skills/custom/.")
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raise ValueError(f"Unsupported action '{action}'.")
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@tool("skill_manage", parse_docstring=True)
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async def skill_manage_tool(
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runtime: ToolRuntime[ContextT, ThreadState],
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action: str,
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name: str,
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content: str | None = None,
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path: str | None = None,
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find: str | None = None,
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replace: str | None = None,
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expected_count: int | None = None,
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) -> str:
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"""Manage custom skills under skills/custom/.
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Args:
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action: One of create, patch, edit, delete, write_file, remove_file.
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name: Skill name in hyphen-case.
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content: New file content for create, edit, or write_file.
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path: Supporting file path for write_file or remove_file.
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find: Existing text to replace for patch.
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replace: Replacement text for patch.
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expected_count: Optional expected number of replacements for patch.
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"""
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return await _skill_manage_impl(
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runtime=runtime,
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action=action,
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name=name,
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content=content,
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path=path,
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find=find,
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replace=replace,
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expected_count=expected_count,
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)
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skill_manage_tool.func = _make_sync_tool_wrapper(_skill_manage_impl, "skill_manage")
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