[OPIK-5452] [SDK] feat: warn when runner process exits without blocking#6021
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petrotiurin merged 2 commits intomainfrom Apr 1, 2026
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When a user's script exits without a blocking call (e.g., no server framework), the runner never processes jobs. This adds detection via signal tracking — if the process exits cleanly (no SIGTERM/SIGINT), a warning is printed advising the user to use a server framework like uvicorn/Flask (Python) or express/fastify (TypeScript). Implements OPIK-5452 Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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- Consolidate test imports to use only module-level import - Make install_signal_handlers return bool; skip atexit when handlers fail Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Apr 1, 2026
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langchain issues unrelated |
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Details
When a user's script exits without a blocking call (e.g., no server framework like uvicorn or express), the runner process terminates before it can process any jobs. This change adds detection by tracking whether shutdown was triggered by a signal (SIGTERM/SIGINT). If the process exits cleanly without a signal, a warning is printed advising the user to use a server framework.
Implemented in both Python and TypeScript SDKs with matching unit tests.
Change checklist
Issues
AI-WATERMARK
AI-WATERMARK: yes
Testing
python -m pytest tests/unit/runner/test_activate.py -v(6 tests pass)npx vitest run tests/unit/runner/activate.test.ts(6 tests pass)_shutdown_by_signalflag on SIGTERMDocumentation
N/A