litellm/tests/proxy_unit_tests
Noah Nistler 8177230a29
feat(guardrails): add run_in_parallel opt-in for concurrent pre_call and post_call guardrails (#33770)
* feat(guardrails): add run_in_parallel opt-in for concurrent pre_call guardrails

Pre-call guardrails run sequentially because each may mutate the request
payload and later guardrails depend on earlier mutations. Deployments with
several slow block-only pre_call guardrails (external moderation, Bedrock,
LLM-judge) therefore pay the sum of their latencies. during_call guardrails
run concurrently but alongside the LLM call, so a violating payload has
already been sent, which is unacceptable when the request must never reach
the model.

This adds a per-guardrail run_in_parallel flag (default off). Guardrails that
opt in are pulled out of the sequential loop and run concurrently via
asyncio.gather after every sequential (payload-mutating) guardrail has run, so
they observe the mutated payload and still form a hard barrier before the LLM
call; the first to raise blocks the request. Their returned data is discarded
since they are declared block-only.

The flag is wired from LitellmParams onto the guardrail instance at the same
generic choke point in initialize_guardrail that already sets
skip_system_message_in_guardrail, so no per-provider initializer needs to
change.

* feat(guardrails): extend run_in_parallel opt-in to post_call guardrails

post_call_success_hook ran guardrails sequentially for the same reason
pre_call did: response-modifying guardrails thread the response forward. But
block-only output scanners (which read the response and reject on violation
without changing it) serialize for no benefit and add latency.

This reuses the existing run_in_parallel flag for the post_call hook. Opted-in
post_call guardrails are pulled out of the sequential loop and run concurrently
via asyncio.gather after the sequential (response-modifying) guardrails and
before the non-guardrail CustomLogger callbacks, so they inspect the final
response and still block it from reaching the client if any raises. Their
returned response is discarded since they are block-only.

The apply_guardrail path sets data["guardrail_to_apply"] immediately before
awaiting, and unified_guardrail pops it before its first suspension point, so
concurrent guardrails never race on that key under asyncio's cooperative
scheduling.

* fix(guardrails): await all parallel guardrails and prioritize blocks over reroutes

Addresses review feedback on the run_in_parallel opt-in.

asyncio.gather propagated the first exception without cancelling or awaiting
the siblings, so a block at t=0 left the other guardrails running as
unobserved background tasks (wasted external calls plus event-loop warnings),
and a fast SensitiveDataRouteException/ModifyResponseException could return a
reroute or passthrough before a slower block finished, letting crafted input
bypass the block. Both the pre_call and post_call parallel batches now gather
with return_exceptions=True so every guardrail runs to completion, then raise
any blocking exception ahead of a flow-changing one.

The registry choke point wrote bool(None)==False onto every instance when the
config omitted run_in_parallel, silently disabling a constructor-set default;
it now only writes when the config provides an explicit value.

* fix(guardrails): record lifecycle logs for every concurrently-run guardrail

The log_guardrail_information decorator skipped its auto-record when it saw
that the count of standard_logging_guardrail_information entries in the shared
request_data had grown during the wrapped call, taking that as proof the
wrapped function had recorded its own richer entry. That heuristic breaks the
moment guardrails run concurrently (parallel pre_call/post_call, during_call):
a sibling guardrail's append inflates the shared count, so a guardrail that did
not self-record wrongly concludes it already did and drops its own entry. The
result is that enabling run_in_parallel silently loses per-guardrail lifecycle
logs, so the Admin UI Request Lifecycle timeline and downstream loggers
(Datadog, Langfuse, OTEL, spend logs) show only one of the concurrent
guardrails.

Replace the shared-count heuristic with a ContextVar flag set when a guardrail
records its own entry. asyncio copies the context into each gathered task, so
the flag is isolated per concurrent guardrail while still catching the
self-record-then-skip-auto-record case within a single invocation.

* test(guardrails): declare run_in_parallel on post_call guardrail mocks

The post_call partition reads run_in_parallel on every CustomGuardrail
callback. A MagicMock(spec=CustomGuardrail) has no run_in_parallel (it is
set in __init__, not on the class) so the attribute access raised, and even
a class-level default would return a truthy child mock that wrongly routes
the double into the parallel batch. Declare the flag False on the shared
mock factories so these pre-existing hook tests exercise the sequential
path they assert on.

* fix(guardrails): harden run_in_parallel reads and address review feedback

Read run_in_parallel via getattr(..., False) in the pre_call and post_call
partitions so a third-party CustomGuardrail subclass that overrides __init__
without chaining super().__init__() no longer raises AttributeError on a path
that previously worked. Drop the redundant in-function GuardrailEventHooks
import in _run_parallel_post_call_guardrails (already imported module-level).
Remove the flaky wall-clock upper-bound assertions from the two concurrency
tests; the all-start-before-any-end overlap assertion is the timing-independent
signal that actually proves concurrency.
2026-07-24 13:25:58 -07:00
..
example_config_yaml test: test 2026-03-28 19:17:38 -07:00
test_configs test: test 2026-03-28 19:17:38 -07:00
test_model_response_typing fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
azure_fine_tune.jsonl fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
batch_job_results_furniture.jsonl fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
conftest copy.py fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
conftest.py [Fix] conftest: flush cache instances and warn on silent skips 2026-04-20 22:19:36 -07:00
data_map.txt fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
eagle.wav fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
gettysburg.wav fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
large_text.py fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
messages_with_counts.py fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
model_cost.json fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
openai_batch_completions.jsonl fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
openai_batch_completions_router.jsonl fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
speech_vertex.mp3 fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
test_aproxy_startup.py (Security fix) - Upgrade to fastapi==0.115.5 (#7447) 2024-12-28 17:08:19 -08:00
test_audit_logs_proxy.py fix(proxy): require opt in for audit header fallback 2026-04-30 11:17:04 -07:00
test_auth_checks.py fix(proxy-auth): deny provider-wildcard access inferred through an unrecognized model namespace 2026-07-11 19:00:03 -07:00
test_banned_keyword_list.py fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
test_blog_posts_endpoint.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_check_batch_cost.py feat(batches): track cost for unmanaged Bedrock batches, generalize the flag (#32315) 2026-07-13 10:33:13 +05:30
test_check_responses_cost.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_custom_callback_input.py fix: use fastuuid helper (#14903) 2025-09-25 15:47:01 -07:00
test_custom_logger_s3_gcs.py chore(tests): thread config_file_path through s3/gcs custom-logger tests 2026-05-13 01:13:52 +00:00
test_custom_tokenizer_bug.py test: make custom_tokenizer proxy tests hermetic (#29643) 2026-06-04 12:51:37 -07:00
test_db_schema_changes.py test: initial test to enforce all functions in user_api_key_auth.py h… (#7797) 2025-01-15 21:52:45 -08:00
test_default_end_user_budget_simple.py Litellm oss staging 030626 (#29578) 2026-06-03 11:01:51 -07:00
test_deployed_proxy_keygen.py fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
test_deprecated_key_grace_period.py Litellm key rotation bug (#27756) 2026-05-12 17:16:37 -07:00
test_e2e_pod_lock_manager.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_gemini_agents_endpoints.py Gemini managed agents support (#28270) 2026-05-19 16:02:03 -07:00
test_get_favicon.py test(proxy): align favicon remote asset expectations 2026-04-30 11:46:45 -07:00
test_get_image.py fix(static-assets): browser-load remote branding assets 2026-04-30 11:30:57 -07:00
test_google_endpoint_routing.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_google_gemini_proxy_request.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_jwt.py test(proxy): stop running real-DB tests in GitHub Actions unit jobs (#29700) 2026-06-04 14:56:02 -07:00
test_jwt_key_mapping.py feat(auth): resolve caller identity once into a Principal at the auth seam (#30887) 2026-06-20 18:49:41 -07:00
test_key_generate_dynamodb.py fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
test_key_generate_prisma.py fix(spend-tracking): drop orphaned imports; align tests with alias contract 2026-04-29 18:53:12 +00:00
test_models_fallback_endpoint.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_multipart_bypass_repro.py fix: harden /key/update authorization checks (#27878) 2026-05-14 04:16:04 +00:00
test_prisma_client_backoff_retry.py fix(tests): mock prisma.Prisma in backoff retry tests to avoid 'prisma generate' 2026-02-17 19:29:20 -03:00
test_prompt_test_endpoint.py fix: harden /key/update authorization checks (#27878) 2026-05-14 04:16:04 +00:00
test_proxy_config_unit_test.py fix: enable JSON logging via configuration and add regression test 2026-01-13 09:38:19 -07:00
test_proxy_custom_auth.py fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
test_proxy_custom_logger.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_proxy_encrypt_decrypt.py test: fix test 2025-07-27 09:52:22 -07:00
test_proxy_exception_mapping.py [Perf] Embeddings: Use router's O(1) lookup and shared sessions (#16344) 2025-11-14 09:21:45 -08:00
test_proxy_gunicorn.py fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
test_proxy_pass_user_config.py test: test 2026-03-28 19:17:38 -07:00
test_proxy_reject_logging.py [internal copy of #29089] fix: duplicate claude code traces (#29311) 2026-05-29 22:23:24 -07:00
test_proxy_routes.py chore(ci): merge dev branch (#28801) 2026-05-25 13:44:49 -07:00
test_proxy_server.py fix(team): make team member add atomic to prevent concurrent-add member loss (#34185) 2026-07-22 21:47:22 +00:00
test_proxy_server_caching.py fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
test_proxy_server_keys.py fix tests 2025-10-25 10:19:24 -07:00
test_proxy_server_langfuse.py (Security fix) - Upgrade to fastapi==0.115.5 (#7447) 2024-12-28 17:08:19 -08:00
test_proxy_server_spend.py fix(pattern_match_deployments.py): default to user input if unable to… (#6632) 2024-11-08 00:55:57 +05:30
test_proxy_setting_guardrails.py fix(lakera-guardrail): use os.environ.get() to avoid KeyError on missing LAKERA_API_KEY 2026-02-17 19:30:22 -03:00
test_proxy_token_counter.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_proxy_utils.py feat(guardrails): add run_in_parallel opt-in for concurrent pre_call and post_call guardrails (#33770) 2026-07-24 13:25:58 -07:00
test_realtime_cache.py feat: litellm oss 110626 (#30202) 2026-06-11 22:30:26 -07:00
test_reducto_ocr_route.py Litellm oss staging 04 21 2026 2 (#26569) 2026-05-20 21:25:19 -07:00
test_request_size_limit_middleware.py Fix early proxy request size enforcement (#27311) 2026-05-06 12:29:11 -07:00
test_response_polling_handler.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_response_polling_pre_call_checks.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_search_api_logging.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_server_root_path.py fix: server rooth path (#19790) 2026-01-26 09:48:06 -08:00
test_skills_db.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_ui_path_detection.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_unit_test_max_model_budget_limiter.py feat(proxy): add key-level budget_fallbacks to reroute requests when a per-model budget is exceeded (#31783) 2026-07-03 12:20:12 -07:00
test_unit_test_proxy_hooks.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_update_daily_tag_spend.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_update_spend.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
test_user_api_key_auth.py fix(proxy): populate user_email on UserAPIKeyAuth for JWT auth (#34174) 2026-07-21 16:11:47 -07:00
test_zero_cost_model_budget_bypass.py style: run black formatter on files from main merge 2026-04-17 13:02:59 -07:00
vertex_key.json test: update to new vertex ai keys 2026-03-28 20:19:05 -07:00