litellm/tests/test_litellm/proxy
michelligabriele 4c77c0fb48 fix(proxy): make async_post_call_response_headers_hook consistent across all endpoints (#22985)
* fix(proxy): make async_post_call_response_headers_hook consistent across all endpoints

The response headers hook had 5 gaps that prevented callbacks from
reliably extracting routing metadata across endpoint types:

1. Hook never fired for /audio/transcriptions (endpoint bypasses
   base_process_llm_request)
2. custom_llm_provider not accessible in hook data for any endpoint
3. custom_llm_provider not stamped in ResponsesAPIResponse._hidden_params
   (unlike chat completions)
4. model_info under inconsistent keys (metadata vs litellm_metadata)
5. request_headers always None at all call sites

This adds a litellm_call_info parameter to the hook that normalizes
routing metadata (custom_llm_provider, model_info, api_base, model_id)
regardless of endpoint type. Also stamps custom_llm_provider on
Responses API responses, adds the hook call to the transcription
handler, and passes request_headers at all call sites.

Supersedes PR #21385.

* fix(proxy): address review feedback — safer backwards compat and None guards

- Replace try/except TypeError with inspect.signature() check for
  litellm_call_info backwards compatibility. This avoids masking real
  TypeErrors inside callback implementations and prevents double
  invocation with inconsistent parameters.

- Use (data.get("key") or {}) instead of data.get("key", {}) to guard
  against keys that exist with an explicit None value, which would
  cause AttributeError on the subsequent .get() call.

* fix(proxy): cache inspect.signature result for callback compat check

Move the inspect.signature() call into a module-level helper with a
dict cache keyed by callback identity. Avoids repeated introspection
per request per callback in the hot path.

* fix(proxy): use class identity for signature cache key

Key the _CALLBACK_ACCEPTS_CALL_INFO cache by id(type(cb)) instead of
id(cb) to avoid stale entries from Python address reuse after GC.
All instances of the same callback class share the same method
signature, so class identity is both safer and more cache-efficient.
2026-03-12 15:29:24 -07:00
..
_experimental/mcp_server fix(tests): update MCP server test mocks to match production API 2026-02-26 13:11:57 -03:00
agent_endpoints [Feat] Agent RBAC Permission Fix - Ensure Internal Users cannot create agents (#22329) 2026-02-27 18:32:39 -08:00
anthropic_endpoints [Fix] 404 Not Found on /api/event_logging/batch endpoint (#20504) 2026-02-05 10:58:08 -08:00
auth fix: bump litellm-proxy-extras to 0.4.50 and fix 3 failing tests (#22417) 2026-02-28 10:20:03 -08:00
client add a new feature fix to expose the team alias when authenticating th… (#17725) 2025-12-10 10:10:28 -08:00
common_utils fix req change 2026-02-28 16:34:23 +05:30
db merge: resolve conflict with origin/main in test_db_spend_update_writer.py 2026-02-25 12:15:53 -08:00
discovery_endpoints fix(azure): preserve content_policy_violation error details from Azure OpenAI (#20883) 2026-02-10 22:47:03 -08:00
experimental/mcp_server Litellm fix GitHub action testing (#11163) 2025-05-26 14:41:42 -07:00
google_endpoints fix: Metadata / Trace ID Missing in S3 Streaming Callbacks 2026-02-25 14:16:42 +05:30
guardrails Merge branch 'main' into litellm_fix_cicd_26_02 2026-02-26 12:14:49 +05:30
health_endpoints [Release Fix] (#22411) 2026-02-28 09:46:35 -08:00
hooks fix(proxy): make async_post_call_response_headers_hook consistent across all endpoints (#22985) 2026-03-12 15:29:24 -07:00
image_endpoints fixing core proxy tests 2026-02-12 17:54:32 -08:00
management_endpoints Merge pull request #22384 from BerriAI/litellm_aws_edge_case 2026-02-28 19:52:55 +05:30
management_helpers [MCP Gateway] Litellm mcp fixes team control (#15304) 2025-10-07 16:48:00 -07:00
middleware feat: add in_flight_requests metric to /health/backlog + prometheus (#22319) 2026-02-27 18:00:50 -08:00
openai_files_endpoint Litellm stability fix v2 (#22452) 2026-02-28 15:29:45 -08:00
pass_through_endpoints Development environment setup (#22432) 2026-02-28 14:50:06 -08:00
policy_engine Guardrail Policy Versioning (#21862) 2026-02-21 20:14:31 -08:00
prompts fix(prompts): fix prompt info lookup and delete using correct IDs (#19358) 2026-01-20 12:28:34 -08:00
public_endpoints [Feature] Add /public/endpoints endpoint for provider endpoint support 2026-02-26 18:17:37 -08:00
rag_endpoints tests and route permissions (#21508) 2026-02-18 16:58:38 -08:00
response_api_endpoints Fix x-litellm-key-spend update 2025-12-12 11:44:51 +05:30
spend_tracking [Release Fix] (#22411) 2026-02-28 09:46:35 -08:00
test_configs Litellm fix GitHub action testing (#11163) 2025-05-26 14:41:42 -07:00
ui_crud_endpoints fix(ollama): thread api_base to get_model_info + graceful fallback (#21970) 2026-02-23 21:00:37 -08:00
vector_store_endpoints test_delete_vector_store_checks_access 2026-01-31 12:05:09 -08:00
__init__.py test fix 2025-10-17 10:46:42 -07:00
conftest.py Add health endpoint tests to CI with database and Redis support (#17877) 2025-12-12 07:35:50 -08:00
test_aiohttp_cleanup_closed.py fix(aiohttp): only set enable_cleanup_closed when required (#21897) 2026-02-23 21:06:29 -08:00
test_api_key_masking_in_errors.py fix: mask API keys in error responses for invalid/malformed keys (#20289) 2026-02-12 19:58:05 +05:30
test_audio_speech_prometheus_hooks.py fix req changes 2026-02-28 21:32:57 +05:30
test_batch_metadata_none_fix.py Fix issue #13995: Handle None metadata in batch requests (#13996) 2025-08-27 14:51:09 -07:00
test_caching_routes.py [Bug Fix] Ensure /redis/info works on GCP Redis (#11732) 2025-06-14 15:35:09 -07:00
test_chat_completion_metadata.py fix: propagate JWT auth metadata to OTEL spans (#19627) 2026-01-23 21:21:23 -08:00
test_common_request_processing.py _add_dd_apm_tags_for_litellm_call_id (#22219) 2026-02-26 16:42:23 -08:00
test_custom_proxy.py fix(ui/): fix routing for custom server root path (#15701) 2025-10-23 13:59:29 -07:00
test_empty_model_list.py [Release Fix] (#22411) 2026-02-28 09:46:35 -08:00
test_enforce_user_param.py Enforce support of enforce_user_param to openai post endpoints 2025-12-03 12:19:21 +05:30
test_fallback_management_endpoints.py Add fallback endpoints support 2026-01-16 10:51:33 +05:30
test_fastapi_offline_routes.py [Bug Fix] - Get Routes (#13466) 2025-08-09 12:52:23 -07:00
test_health_check_functions.py Fix_mapped tests part 2 2026-02-26 12:43:39 +05:30
test_health_check_max_tokens.py add docs and formatting 2026-02-28 14:08:09 +05:30
test_litellm_pre_call_utils.py Guardrail Policy Versioning (#21862) 2026-02-21 20:14:31 -08:00
test_model_dump_with_preserved_fields.py Fix_mapped tests part 2 2026-02-26 12:43:39 +05:30
test_model_id_header_propagation.py (fix) propagate x-litellm-model-id in responses (#16986) 2025-11-24 20:40:43 -08:00
test_prometheus_cleanup.py Add Prometheus child_exit cleanup for gunicorn workers 2026-02-27 16:11:15 -08:00
test_proxy_cli.py [Release Fix] (#22411) 2026-02-28 09:46:35 -08:00
test_proxy_server.py Merge origin/main into litellm_fix_streaming_connection_pool_leak 2026-02-21 12:44:50 -08:00
test_proxy_types.py fix: Add PROXY_ADMIN role to system user for key rotation (#21896) 2026-02-27 19:11:29 -08:00
test_proxy_utils.py Fix date overflow/division by zero in proxy utils (#19527) 2026-01-21 21:09:57 -08:00
test_pyroscope.py Fix CI/CD pyroscope test failure (#21219) 2026-02-14 12:07:20 -08:00
test_response_model_sanitization.py fix(proxy): prevent provider-prefixed model leaks (#19943) 2026-01-28 22:26:38 -08:00
test_route_a2a_models.py Fix test_route_a2a_model_bypasses_router 2026-02-05 09:47:05 +05:30
test_route_llm_request.py Override router settings 2026-01-31 16:04:52 -08:00
test_shared_health_check.py Fix_mapped tests part 2 2026-02-26 12:43:39 +05:30
test_spend_log_cleanup.py perf(spendlogs): optimize old spendlog deletion cron job 2026-02-23 19:44:30 +05:30
test_swagger_chat_completions.py [Release Fix] (#22411) 2026-02-28 09:46:35 -08:00
test_team_member_update.py fix mapped tests (#12320) 2025-07-04 10:04:43 -07:00
test_update_llm_router_resilience.py fix(proxy): isolate get_config failures from model loading in sync loop 2026-02-26 17:49:44 -03:00