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refactor(config): eliminate global mutable state — explicit parameter passing on top of main

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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).
This commit is contained in:
greatmengqi
2026-04-26 21:45:02 +08:00
parent 9dc25987e0
commit 3e6a34297d
365 changed files with 31220 additions and 5303 deletions
Download Patch File Download Diff File Expand all files Collapse all files
backend/tests/test_subagent_executor.py
+20 -18
View File
@@ -21,6 +21,8 @@ from unittest.mock import MagicMock, patch
import pytest
_TEST_APP_CONFIG = MagicMock(name="TestAppConfig")
# Module names that need to be mocked to break circular imports
_MOCKED_MODULE_NAMES = [
"deerflow.agents",
@@ -203,7 +205,7 @@ class TestAsyncExecutionPath:
config=base_config,
tools=[],
thread_id="test-thread",
trace_id="test-trace",
trace_id="test-trace", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -232,7 +234,7 @@ class TestAsyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -259,7 +261,7 @@ class TestAsyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -285,7 +287,7 @@ class TestAsyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -306,7 +308,7 @@ class TestAsyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -327,7 +329,7 @@ class TestAsyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -348,7 +350,7 @@ class TestAsyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -384,7 +386,7 @@ class TestSyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -419,7 +421,7 @@ class TestSyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -456,7 +458,7 @@ class TestSyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -477,7 +479,7 @@ class TestSyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_aexecute") as mock_aexecute:
@@ -511,7 +513,7 @@ class TestSyncExecutionPath:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -565,7 +567,7 @@ class TestAsyncToolSupport:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -602,7 +604,7 @@ class TestAsyncToolSupport:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -648,7 +650,7 @@ class TestThreadSafety:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id=f"thread-{task_id}",
thread_id=f"thread-{task_id}", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -858,7 +860,7 @@ class TestCooperativeCancellation:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -898,7 +900,7 @@ class TestCooperativeCancellation:
executor = SubagentExecutor(
config=base_config,
tools=[],
thread_id="test-thread",
thread_id="test-thread", app_config=_TEST_APP_CONFIG,
)
with patch.object(executor, "_create_agent", return_value=mock_agent):
@@ -977,7 +979,7 @@ class TestCooperativeCancellation:
config=short_config,
tools=[],
thread_id="test-thread",
trace_id="test-trace",
trace_id="test-trace", app_config=_TEST_APP_CONFIG,
)
# Wrap _scheduler_pool.submit so we know when run_task finishes