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fancyboi999
1a28334b19
`get_config(request)` returned the `app.state.config` snapshot captured at startup. The worker / lead-agent path then threaded that frozen `AppConfig` through `RunContext` and `agent_factory`, so per-run fields edited in `config.yaml` (notably `max_tokens`) were ignored until the gateway process was restarted — even though `get_app_config()` already does mtime-based reload at the bottom layer. Route the request dependency through `get_app_config()` directly. Runtime `ContextVar` overrides (`push_current_app_config`) and test-injected singletons (`set_app_config`) keep working; `app.state.config` is now only read at startup for one-shot bootstrap (logging level, IM channels, `langgraph_runtime` engines). `tests/test_gateway_deps_config.py` encoded the old snapshot contract and is removed; `tests/test_gateway_config_freshness.py` replaces it with mtime, ContextVar, and `set_app_config` coverage. `test_skills_custom_router.py` and `test_uploads_router.py` now inject test configs via FastAPI `dependency_overrides[get_config]` instead of mutating `app.state.config`. Document the hot-reload boundary in `backend/CLAUDE.md` so reviewers know which fields are picked up on the next request vs. which still require a restart (`database`, `checkpointer`, `run_events`, `stream_bridge`, `sandbox.use`, `log_level`, `channels.*`). Refs: bytedance/deer-flow#3107 (BUG-001)
111 lines
3.5 KiB
Python
111 lines
3.5 KiB
Python
"""Regression tests for gateway config freshness on the request hot path.
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Bytedance/deer-flow issue #3107 BUG-001: the worker and lead-agent path
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captured ``app.state.config`` at gateway startup. ``config.yaml`` edits during
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runtime were therefore ignored — ``get_app_config()``'s mtime-based reload
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existed but was bypassed because the snapshot object was passed through
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explicitly.
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These tests pin the desired behaviour: a request-time ``get_config`` call must
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observe the most recent on-disk ``config.yaml`` (mtime reload), and the
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runtime ``ContextVar`` override must keep working for per-request injection.
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"""
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from __future__ import annotations
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import os
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from pathlib import Path
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import pytest
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from fastapi import Depends, FastAPI
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from fastapi.testclient import TestClient
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from app.gateway.deps import get_config
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from deerflow.config.app_config import (
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AppConfig,
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pop_current_app_config,
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push_current_app_config,
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reset_app_config,
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set_app_config,
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)
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from deerflow.config.sandbox_config import SandboxConfig
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@pytest.fixture(autouse=True)
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def _isolate_app_config_singleton():
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"""Ensure each test starts with a clean module-level cache."""
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reset_app_config()
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yield
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reset_app_config()
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def _write_config_yaml(path: Path, *, log_level: str) -> None:
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path.write_text(
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f"""
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sandbox:
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use: deerflow.sandbox.local.provider:LocalSandboxProvider
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log_level: {log_level}
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""".strip()
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+ "\n",
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encoding="utf-8",
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)
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def _build_app() -> FastAPI:
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app = FastAPI()
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@app.get("/probe")
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def probe(cfg: AppConfig = Depends(get_config)):
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return {"log_level": cfg.log_level}
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return app
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def test_get_config_reflects_file_mtime_reload(tmp_path, monkeypatch):
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"""Editing config.yaml at runtime must be visible to /probe without restart.
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This is the literal repro for the issue: the gateway must not freeze the
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config to whatever was on disk when the process started.
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"""
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config_file = tmp_path / "config.yaml"
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_write_config_yaml(config_file, log_level="info")
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monkeypatch.setenv("DEER_FLOW_CONFIG_PATH", str(config_file))
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app = _build_app()
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client = TestClient(app)
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assert client.get("/probe").json() == {"log_level": "info"}
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# Edit the file and bump its mtime — simulating a maintainer changing
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# max_tokens / model settings in production while the gateway is live.
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_write_config_yaml(config_file, log_level="debug")
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future_mtime = config_file.stat().st_mtime + 5
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os.utime(config_file, (future_mtime, future_mtime))
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assert client.get("/probe").json() == {"log_level": "debug"}
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def test_get_config_respects_runtime_context_override(tmp_path, monkeypatch):
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"""Per-request ``push_current_app_config`` injection must still win."""
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config_file = tmp_path / "config.yaml"
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_write_config_yaml(config_file, log_level="info")
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monkeypatch.setenv("DEER_FLOW_CONFIG_PATH", str(config_file))
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override = AppConfig(sandbox=SandboxConfig(use="test"), log_level="trace")
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push_current_app_config(override)
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try:
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app = _build_app()
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client = TestClient(app)
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assert client.get("/probe").json() == {"log_level": "trace"}
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finally:
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pop_current_app_config()
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def test_get_config_respects_test_set_app_config():
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"""``set_app_config`` (used by upload/skills router tests) keeps working."""
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injected = AppConfig(sandbox=SandboxConfig(use="test"), log_level="warning")
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set_app_config(injected)
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app = _build_app()
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client = TestClient(app)
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assert client.get("/probe").json() == {"log_level": "warning"}
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