Restoring dropped Gemini chat config in Sentry's JavaScript SDK

Описание и применение

Исправлена потеря конфигурации Gemini в трассах Sentry, восстановлены все атрибуты модели.

Задача

Sentry’s JavaScript SDK lost Gemini chat configuration attributes in trace spans after a refactor, making AI tracing incomplete.

Результат

The patch restores missing Gemini chat configuration attributes in Sentry traces, enabling accurate AI debugging and cost analysis.

Рабочий процесс

• Identify regression via missing span attributes
• Analyze deep proxy re‑instrumentation logic
• Create mergeChatCreateParams helper to combine create‑time and per‑message config
• Thread create arguments through proxy in createDeepProxy
• Update instrumentMethod to use merged params for span attributes
• Add unit tests covering config welding and non‑chat calls
• Run full @sentry/server-utils test suite (339 passing)
• Verify fix against live Gemini API, confirming attributes present

Доказательства

The fix captures the chats.create() arguments and welds model plus config onto each message span.

Источник

Both runs got a real Gemini reply. The AFTER run answered: "Why did the programmer quit his job debugging code? Because he kept finding himself in an infinite loop."

Источник