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fix(config): unify log_level from config.yaml across Gateway and debug entry points (#2601)

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Centralize log level parsing in `logging_level_from_config()` and
application in `apply_logging_level()` within `deerflow.config.app_config`.

- Gateway lifespan applies configured log level on startup
- `debug.py` uses shared helpers instead of local duplicates
- `apply_logging_level()` targets only `deerflow`/`app` logger hierarchies
  so third-party library verbosity is not affected; root handler levels
  are only lowered (never raised) to allow configured loggers through
  without suppressing third-party output; root logger level is not modified
- Config field description updated to clarify scope
- Tests save/restore global logging state to avoid test pollution

Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
He Wang
2026-04-30 22:27:14 +08:00
committed by GitHub
parent c0da278269
commit eba3b9e18d
4 changed files with 135 additions and 26 deletions
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backend/packages/harness/deerflow/config/app_config.py
+25 -1
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@@ -53,10 +53,34 @@ def _default_config_candidates() -> tuple[Path, ...]:
return (backend_dir / "config.yaml", repo_root / "config.yaml")
def logging_level_from_config(name: str | None) -> int:
"""Map ``config.yaml`` ``log_level`` string to a :mod:`logging` level constant."""
mapping = logging.getLevelNamesMapping()
return mapping.get((name or "info").strip().upper(), logging.INFO)
def apply_logging_level(name: str | None) -> None:
"""Resolve *name* to a logging level and apply it to the ``deerflow``/``app`` logger hierarchies.
Only the ``deerflow`` and ``app`` logger levels are changed so that
third-party library verbosity (e.g. uvicorn, sqlalchemy) is not
affected. Root handler levels are lowered (never raised) so that
messages from the configured loggers can propagate through without
being filtered, while preserving handler thresholds that may be
intentionally restrictive for third-party log output.
"""
level = logging_level_from_config(name)
for logger_name in ("deerflow", "app"):
logging.getLogger(logger_name).setLevel(level)
for handler in logging.root.handlers:
if level < handler.level:
handler.setLevel(level)
class AppConfig(BaseModel):
"""Config for the DeerFlow application"""
log_level: str = Field(default="info", description="Logging level for deerflow modules (debug/info/warning/error)")
log_level: str = Field(default="info", description="Logging level for deerflow and app modules (debug/info/warning/error); third-party libraries are not affected")
token_usage: TokenUsageConfig = Field(default_factory=TokenUsageConfig, description="Token usage tracking configuration")
models: list[ModelConfig] = Field(default_factory=list, description="Available models")
sandbox: SandboxConfig = Field(description="Sandbox configuration")