feat(proxy): LiteLLM headers on Google native generateContent routes (#25500)
* feat(proxy): return LiteLLM headers on Google native generateContent routes
Wire build_litellm_proxy_success_headers_from_llm_response for :generateContent
and :streamGenerateContent so x-litellm-*, rate limit, and provider headers
match the OpenAI-style proxy path. Add unit test.
Annotate httpx.HTTPStatusError branch so pyright accepts .response after optional
exception transform. Remove unused variable in streaming tracer test (Ruff F841).
Made-with: Cursor
* fix(proxy): prefill Google GenAI stream _hidden_params for proxy headers
- Pass model_id, api_base, and process_response_headers output into streaming
iterators so streamGenerateContent gets the same x-litellm-* headers as
non-streaming paths.
- Drop request_data deployment mutation from build_litellm_proxy_success_headers_from_llm_response.
- Avoid logging raw request key names in oversized debug payload (code scanning).
- Extend tests for streaming iterator shape, metadata fallback, and helper.
Made-with: Cursor
* Update litellm/proxy/common_request_processing.py
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
* remove unused key count
* Fix greptile review
* Update litellm/proxy/common_request_processing.py
Co-authored-by: Mateo Wang <277851410+mateo-berri@users.noreply.github.com>
---------
Co-authored-by: greptile-apps[bot] <165735046+greptile-apps[bot]@users.noreply.github.com>
Co-authored-by: Mateo Wang <277851410+mateo-berri@users.noreply.github.com>
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