litellm/tests/test_litellm/llms/a2a
Mateo Wang 4f7b20ec10
fix(guardrails): skip streaming guardrail rounds that re-scan cleared output (#39386)
* fix(guardrails): skip streaming guardrail rounds that re-scan cleared output

Streaming guardrails scanned the finished answer twice at end of stream
whenever the chunk count landed on a multiple of the sampling rate, ran
sampled rounds whose payload was identical to the previous one, and on
/v1/messages could scan an empty text before the first content chunk.
Every redundant round is a paid guardrail provider call.

Each endpoint handler now exposes a scan key describing what a round
would hand to apply_guardrail (the text so far, plus tool calls once the
stream has ended), and the unified streaming hook skips a sampled or
end-of-stream round whose key equals the last scanned one or carries
nothing to scan yet. Rounds that carry tool calls are never skipped.

* test(guardrails): expect one end-of-stream scan when the terminal chunk is sampled

Update sampled cadence expectations and use tuple-backed scan state

Co-Authored-By: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>

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Co-authored-by: yassin <yassin@berri.ai>
Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>
2026-09-02 18:25:28 -07:00
..
chat fix(guardrails): skip streaming guardrail rounds that re-scan cleared output (#39386) 2026-09-02 18:25:28 -07:00