litellm/tests
ryan-crabbe-berri 0300333753
feat(otel): OTel-standard attributes on the proxy SERVER span (status code, route/path, preprocessing latency) (#28040)
* feat(otel): expose http.response.status_code on failure spans

Set the OTel-standard http.response.status_code (integer) on failure
spans alongside the existing OpenInference error.code (kept for
back-compat). error.type is already emitted via ERROR_TYPE.

Crucially, also record structured error attributes on the proxy SERVER
span ('Received Proxy Server Request') from async_post_call_failure_hook
- the only place the SERVER span is in hand. _handle_failure records on
the litellm_request child span (the parent span is not propagated into
its kwargs), so prior to this change the SERVER span that dashboards
query carried only span status, never error.code/error.type. Reuses
_record_exception_on_span + StandardLoggingPayloadSetup.get_error_information
so values match the child span.

Tests: recorder unit coverage + a hook-driven test asserting the SERVER
span is stamped (the gap recorder-only tests missed). Full
test_opentelemetry.py suite: 197 passed.

* feat(otel): set http.route + url.path on the proxy SERVER span

Add the OTel-standard http.route (low-cardinality route template, e.g.
/v1/threads/{thread_id}/runs) and url.path (literal path) to the SERVER
span ('Received Proxy Server Request') so dashboards can group traffic
by endpoint instead of seeing every path param as a unique value.

Same architectural gap as the status-code commit: the success/failure
logging handlers write the litellm_request CHILD span, and
_handle_success explicitly refuses to copy to the SERVER span. Verified
with a console-exporter run that the SERVER span was bare on success.

Unlike error info, route/path are known at request time, so set them
directly on the freshly-created SERVER span in user_api_key_auth (one
edit point, works for success and failure, no hook-ordering risk):
- http.route from the matched FastAPI route (scope['route'].path),
  empirically confirmed populated at auth-dependency time.
- url.path from the existing literal-path variable.
New get_request_route_template helper + set_proxy_request_route_attributes
(no-op on None span, so the Langfuse override stays safe).

Tests: route-attribute setter + route-template helper edges. Full
test_opentelemetry.py and test_auth_utils.py green.

* feat(otel): set litellm.preprocessing.duration_ms on the proxy SERVER span

Expose the total time LiteLLM spends before the upstream provider
request begins (auth + parsing + pre-call hooks) as a single number on
the SERVER span ('Received Proxy Server Request'). Window:
proxy-receive -> FIRST provider handoff.

Retry semantics: first attempt only (pure preprocessing, excludes
retry loops + backoff). api_call_start_time is overwritten on every
attempt, so a set-once first_api_call_start_time pins the first handoff.

Same architectural gap as the prior two commits: the success/failure
logging handlers write the litellm_request CHILD span, not the SERVER
span. Set it instead from the post-call hooks on
user_api_key_dict.parent_otel_span.

Failure-path subtlety: request_data.pop('litellm_logging_obj') runs
before the failure-hook loop, so the failure hook can't read the
logging object. litellm_received_at is propagated via the existing
request->metadata channel, and first_api_call_start_time is mirrored
onto litellm_params.metadata, so both anchors survive into request_data
and the OTel helper reads them uniformly for success and failure.

Edits: user_api_key_auth (stash receive instant), litellm_pre_call_utils
(propagate it), litellm_logging (set-once first handoff + metadata
mirror), opentelemetry (constant + set_preprocessing_duration_attribute,
called from both post-call hooks).

Tests: duration helper (both container shapes, missing/negative/None
edges) + set-once invariant (retry doesn't overwrite, metadata mirror).
test_opentelemetry.py + test_auth_utils.py + test_litellm_logging.py:
447 passed. Verified live: SERVER span carries the attribute on success
and failure, coexisting with the status-code and route attributes.

* fix(otel): MyPy type-narrowing for status-code + preprocessing-duration

No behavior change. MyPy (CI lint) flagged:
- error_information["error_code"] is str|None: narrow via a None-checked
  local before int().
- _to_timestamp returns Optional[float]: resolve both anchors and return
  early if either is None instead of subtracting possibly-None floats.

* fix(otel): stop polluting user request metadata with first_api_call_start_time

The PR3 set-once preprocessing anchor was mirrored into
litellm_params["metadata"] from core litellm_logging.py. That dict is
the caller's request metadata, mutated in place and shared across every
call path including pure SDK (litellm.acreate_batch). It got echoed into
LiteLLMBatch(metadata=...), which the OpenAI batch schema types as
Dict[str, str] -> pydantic ValidationError on a datetime value.

- litellm_logging.py: set first_api_call_start_time only on
  model_call_details (success path reads it there directly).
- proxy/utils.py: post_call_failure_hook lifts it off the logging object
  into request_data (internal top-level key, same convention as the
  other proxy-internal request_data keys) right before the existing
  litellm_logging_obj pop. Never touches user metadata.
- opentelemetry.py: read the anchor from the container top level
  (model_call_details on success, request_data on failure).
- Tests updated; add TestPostCallFailureHookLiftsFirstApiCallStartTime.

Fixes the batches_testing regression introduced on this branch.

* chore(otel): trim verbose comments to concise rationale

Collapse multi-line why-blocks to one or two lines and drop process/plan references (PR-numbering, "the plan") from test comments. No behavior change.
2026-05-16 13:45:08 -07:00
..
agent_tests
audio_tests test(vcr): classify cache verdicts, detect live calls, surface cost leaks 2026-05-13 00:31:47 +00:00
basic_proxy_startup_tests
batches_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
benchmarks
code_coverage_tests feat: add componentized proxy deployment with gateway, backend, ui, and migrations (#27557) 2026-05-16 09:25:17 -07:00
documentation_tests
enterprise chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
guardrails_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
image_gen_tests Merge pull request #27795 from BerriAI/litellm_vcr-cache-observability-and-fixes-c5bc 2026-05-14 13:51:16 -07:00
litellm Add new chat model metadata (#27313) 2026-05-06 15:15:21 -07:00
litellm_core_utils
litellm_utils_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
litellm-proxy-extras
llm_responses_api_testing chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
llm_translation Merge branch 'litellm_internal_staging' into litellm_grid-v4-e2e-tests-cZRwz 2026-05-16 16:19:38 +00:00
load_tests
local_testing test(ci): skip Fireworks tests on 404 + Gemini image-size test on 429 2026-05-16 07:47:25 +00:00
logging_callback_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
mcp_tests feat: litellm shin agent oss staging 05 10 2026 (#27631) 2026-05-11 20:31:43 -07:00
multi_instance_e2e_tests
ocr_tests test(vcr): classify cache verdicts, detect live calls, surface cost leaks 2026-05-13 00:31:47 +00:00
old_proxy_tests/tests
openai_endpoints_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
otel_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
pass_through_tests chore(deps): refresh dependency locks 2026-05-04 11:36:18 -07:00
pass_through_unit_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
proxy_admin_ui_tests chore(deps): refresh dependency locks 2026-05-04 11:36:18 -07:00
proxy_e2e_anthropic_messages_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
proxy_security_tests
proxy_unit_tests fix(managed_batches): convert raw output_file_id to managed ID in CheckBatchCost poller (#27984) 2026-05-15 04:41:38 -07:00
router_unit_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
scim_tests
search_tests test(vcr): classify cache verdicts, detect live calls, surface cost leaks 2026-05-13 00:31:47 +00:00
spend_tracking_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
store_model_in_db_tests
test_litellm feat(otel): OTel-standard attributes on the proxy SERVER span (status code, route/path, preprocessing latency) (#28040) 2026-05-16 13:45:08 -07:00
unified_google_tests chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
vector_store_tests
windows_tests
__init__.py
_flush_vcr_cache.py tests(vcr): isolate cassette redis to CASSETTE_REDIS_URL 2026-05-01 12:32:59 -07:00
_vcr_conftest_common.py fix(vcr): aggregate worker stats on the controller so the session summary actually renders under xdist 2026-05-13 07:24:32 +00:00
_vcr_redis_persister.py test: add 24hr Redis-backed VCR cache to additional test suites (#27159) 2026-05-05 15:13:31 -07:00
eval_swe_bench.py
gettysburg.wav
large_text.py
openai_batch_completions.jsonl
README.MD
test_budget_management.py
test_callbacks_on_proxy.py
test_config.py
test_debug_warning.py
test_default_encoding_non_root.py
test_end_users.py chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
test_entrypoint.py
test_fallbacks.py
test_gpt5_azure_temperature_support.py
test_health.py fix(tests): swap dall-e to gpt-image-1 after openai deprecation 2026-05-12 16:55:18 -07:00
test_keys.py fix(tests): swap dall-e to gpt-image-1 after openai deprecation 2026-05-12 16:55:18 -07:00
test_litellm_proxy_responses_config.py chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
test_logging.conf
test_models.py
test_new_vector_store_endpoints.py
test_openai_endpoints.py fix(tests): swap dall-e to gpt-image-1 after openai deprecation 2026-05-12 16:55:18 -07:00
test_organizations.py
test_otel_thread_leak.py
test_passthrough_endpoints.py
test_presidio_latency.py
test_proxy_server_non_root.py
test_ratelimit.py chore(ci): modernize model references in tests and configs (#27856) 2026-05-15 15:44:28 -07:00
test_resource_cleanup.py
test_service_logger_otel.py
test_spend_logs.py
test_team_logging.py
test_team_members.py
test_team.py
test_users.py Fix: tag budget reset must drop stale management-cache entry (#27568) 2026-05-10 00:18:55 +00:00

In total litellm runs 1000+ tests

[02/20/2025] Update:

To make it easier to contribute and map what behavior is tested,

we've started mapping the litellm directory in tests/test_litellm

This folder can only run mock tests.