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feat: add configurable log level and token usage tracking (#1301)

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* feat: add configurable log level and token usage tracking

- Add `log_level` config to control deerflow module log level, synced
  to LangGraph Server via serve.sh `--server-log-level`
- Add `token_usage.enabled` config with TokenUsageMiddleware that logs
  input/output/total tokens per LLM call from usage_metadata
- Add .omc/ to .gitignore

* fix: use info level for token usage logs since feature has its own toggle

* fix: sort imports to pass lint check

---------

Co-authored-by: greatmengqi <chenmengqi.0376@bytedance.com>
Co-authored-by: Willem Jiang <willem.jiang@gmail.com>
This commit is contained in:
greatmengqi
2026-03-25 08:13:26 +08:00
committed by GitHub
parent 77b8ef79ca
commit 16ed797e0e
7 changed files with 74 additions and 3 deletions
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5
scripts/serve.sh
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@@ -122,7 +122,10 @@ else
fi
echo "Starting LangGraph server..."
(cd backend && NO_COLOR=1 uv run langgraph dev --no-browser --allow-blocking $LANGGRAPH_EXTRA_FLAGS > ../logs/langgraph.log 2>&1) &
# Read log_level from config.yaml, fallback to env var, then to "info"
CONFIG_LOG_LEVEL=$(grep -m1 '^log_level:' config.yaml 2>/dev/null | awk '{print $2}' | tr -d ' ')
LANGGRAPH_LOG_LEVEL="${LANGGRAPH_LOG_LEVEL:-${CONFIG_LOG_LEVEL:-info}}"
(cd backend && NO_COLOR=1 uv run langgraph dev --no-browser --allow-blocking --server-log-level $LANGGRAPH_LOG_LEVEL $LANGGRAPH_EXTRA_FLAGS > ../logs/langgraph.log 2>&1) &
./scripts/wait-for-port.sh 2024 60 "LangGraph" || {
echo " See logs/langgraph.log for details"
tail -20 logs/langgraph.log