diff --git a/basedpyright-code-budget.json b/basedpyright-code-budget.json index 0b0a61192e6..c21dc76743a 100644 --- a/basedpyright-code-budget.json +++ b/basedpyright-code-budget.json @@ -54,10 +54,10 @@ "limit": 0 }, "reportMissingParameterType": { - "limit": 5570 + "limit": 5551 }, "reportMissingTypeArgument": { - "limit": 15281 + "limit": 15277 }, "reportMissingTypeStubs": { "limit": 40 @@ -99,19 +99,19 @@ "limit": 0 }, "reportUnknownArgumentType": { - "limit": 44358 + "limit": 44357 }, "reportUnknownLambdaType": { "limit": 109 }, "reportUnknownMemberType": { - "limit": 38271 + "limit": 38240 }, "reportUnknownParameterType": { - "limit": 19584 + "limit": 19558 }, "reportUnknownVariableType": { - "limit": 29814 + "limit": 29781 }, "reportUnnecessaryCast": { "limit": 110 diff --git a/litellm/caching/redis_cache.py b/litellm/caching/redis_cache.py index aaee7188d86..d4c47914394 100644 --- a/litellm/caching/redis_cache.py +++ b/litellm/caching/redis_cache.py @@ -680,7 +680,7 @@ class RedisCache(BaseCache): # NON blocking - notify users Redis is throwing an exception print_verbose(f"litellm.caching.caching: set() - Got exception from REDIS : {e}") - def increment_cache(self, key, value: int, ttl: float | None = None, **kwargs) -> int: + def increment_cache(self, key, value: int, ttl: float | None = None, refresh_ttl: bool = False, **kwargs) -> int: _redis_client: Final = self.redis_client start_time = time.time() set_ttl: Final = self.get_ttl(ttl=ttl) @@ -701,7 +701,7 @@ class RedisCache(BaseCache): if set_ttl is not None: # check if key already has ttl, if not -> set ttl start_time = time.time() - current_ttl: Final = _redis_client.ttl(key) + current_ttl: Final = -1 if refresh_ttl else _redis_client.ttl(key) end_time = time.time() _duration = end_time - start_time self.service_logger_obj.service_success_hook( diff --git a/litellm/router_strategy/least_busy.py b/litellm/router_strategy/least_busy.py index 1433e8ba4d4..de6a4c4f59a 100644 --- a/litellm/router_strategy/least_busy.py +++ b/litellm/router_strategy/least_busy.py @@ -1,17 +1,96 @@ -#### What this does #### -# identifies least busy deployment -# How is this achieved? -# - Before each call, have the router print the state of requests {"deployment": "requests_in_flight"} -# - use litellm.input_callbacks to log when a request is just about to be made to a model - {"deployment-id": traffic} -# - use litellm.success + failure callbacks to log when a request completed -# - in get_available_deployment, for a given model group name -> pick based on traffic - -import random +from collections.abc import Mapping, Sequence from typing import Final +from pydantic import TypeAdapter, ValidationError +from typing_extensions import ReadOnly, TypedDict + +from litellm._logging import verbose_router_logger from litellm.caching.caching import DualCache from litellm.integrations.custom_logger import CustomLogger +IN_FLIGHT_COUNT_TTL_SECONDS: Final = 60 * 60 + + +class _ModelInfo(TypedDict, total=False): + id: ReadOnly[str | int | None] + + +class _Metadata(TypedDict, total=False): + model_group: ReadOnly[str | None] + + +class _LitellmParams(TypedDict, total=False): + metadata: ReadOnly[_Metadata | None] + model_info: ReadOnly[_ModelInfo | None] + + +class _CallKwargs(TypedDict, total=False): + litellm_params: ReadOnly[_LitellmParams | None] + + +class _DeploymentModelInfo(TypedDict): + id: ReadOnly[str | int] + + +class _Deployment(TypedDict): + model_info: ReadOnly[_DeploymentModelInfo] + + +_CALL_KWARGS: Final = TypeAdapter(_CallKwargs) +_DEPLOYMENTS: Final = TypeAdapter(list[_Deployment]) +_REDIS_COUNTS: Final = TypeAdapter(dict[str, float | None]) +_MEMORY_COUNTS: Final = TypeAdapter(tuple[float | None, ...]) + + +def _request_count_key(model_group: str, deployment_id: str) -> str: + return f"{model_group}_request_count:{deployment_id}" + + +def _deployment_ref(kwargs: Mapping[str, object]) -> tuple[str, str] | None: + try: + call: Final = _CALL_KWARGS.validate_python(kwargs) + except ValidationError: + return None + litellm_params: Final = call.get("litellm_params") + metadata: Final = litellm_params.get("metadata") if litellm_params else None + model_info: Final = litellm_params.get("model_info") if litellm_params else None + model_group: Final = metadata.get("model_group") if metadata else None + deployment_id: Final = model_info.get("id") if model_info else None + if model_group is None or deployment_id is None: + return None + return model_group, str(deployment_id) + + +def _request_count_keys(model_group: str, healthy_deployments: Sequence[Mapping[str, object]]) -> tuple[str, ...]: + return tuple( + _request_count_key(model_group, str(deployment["model_info"]["id"])) + for deployment in _DEPLOYMENTS.validate_python(healthy_deployments) + ) + + +def _as_count(value: float | None) -> int: + return 0 if value is None else int(value) + + +def _least_busy( + healthy_deployments: Sequence[Mapping[str, object]], counts: tuple[int, ...] +) -> Mapping[str, object] | None: + if not healthy_deployments: + return None + return healthy_deployments[min(range(len(healthy_deployments)), key=lambda index: counts[index])] + + +def _warn_unreadable(model_group: str, error: Exception) -> None: + verbose_router_logger.warning( + "least-busy routing could not read the in-flight counts for %s, treating every deployment as idle: %s", + model_group, + error, + ) + + +def _warn_unwritable(key: str, error: Exception) -> None: + verbose_router_logger.warning("least-busy routing could not update the in-flight count under %s: %s", key, error) + class LeastBusyLoggingHandler(CustomLogger): test_flag: bool = False @@ -21,194 +100,101 @@ class LeastBusyLoggingHandler(CustomLogger): def __init__(self, router_cache: DualCache): self.router_cache = router_cache - def log_pre_api_call(self, model, messages, kwargs): - """ - Log when a model is being used. + def log_pre_api_call(self, model: str, messages: object, kwargs: Mapping[str, object]) -> None: + self._increment(kwargs, 1) - Caching based on model group. - """ - try: - if kwargs["litellm_params"].get("metadata") is None: - pass - else: - model_group: Final = kwargs["litellm_params"]["metadata"].get("model_group", None) - id = kwargs["litellm_params"].get("model_info", {}).get("id", None) - if model_group is None or id is None: - return - elif isinstance(id, int): - id = str(id) + def log_success_event( + self, kwargs: Mapping[str, object], response_obj: object, start_time: object, end_time: object + ) -> None: + self._increment(kwargs, -1) + if self.test_flag: + self.logged_success += 1 - request_count_api_key: Final = f"{model_group}_request_count" - # update cache - request_count_dict: Final = self.router_cache.get_cache(key=request_count_api_key) or {} - request_count_dict[id] = request_count_dict.get(id, 0) + 1 + def log_failure_event( + self, kwargs: Mapping[str, object], response_obj: object, start_time: object, end_time: object + ) -> None: + self._increment(kwargs, -1) + if self.test_flag: + self.logged_failure += 1 - self.router_cache.set_cache(key=request_count_api_key, value=request_count_dict) - except Exception: - pass + async def async_log_success_event( + self, kwargs: Mapping[str, object], response_obj: object, start_time: object, end_time: object + ) -> None: + await self._async_increment(kwargs, -1) + if self.test_flag: + self.logged_success += 1 - def log_success_event(self, kwargs, response_obj, start_time, end_time): - try: - if kwargs["litellm_params"].get("metadata") is None: - pass - else: - model_group: Final = kwargs["litellm_params"]["metadata"].get("model_group", None) - - id = kwargs["litellm_params"].get("model_info", {}).get("id", None) - if model_group is None or id is None: - return - elif isinstance(id, int): - id = str(id) - - request_count_api_key: Final = f"{model_group}_request_count" - # decrement count in cache - request_count_dict: Final = self.router_cache.get_cache(key=request_count_api_key) or {} - request_count_value: Final[int | None] = request_count_dict.get(id, 0) - if request_count_value is None: - return - request_count_dict[id] = request_count_value - 1 - self.router_cache.set_cache(key=request_count_api_key, value=request_count_dict) - - ### TESTING ### - if self.test_flag: - self.logged_success += 1 - except Exception: - pass - - def log_failure_event(self, kwargs, response_obj, start_time, end_time): - try: - if kwargs["litellm_params"].get("metadata") is None: - pass - else: - model_group: Final = kwargs["litellm_params"]["metadata"].get("model_group", None) - id = kwargs["litellm_params"].get("model_info", {}).get("id", None) - if model_group is None or id is None: - return - elif isinstance(id, int): - id = str(id) - - request_count_api_key: Final = f"{model_group}_request_count" - # decrement count in cache - request_count_dict: Final = self.router_cache.get_cache(key=request_count_api_key) or {} - request_count_value: Final[int | None] = request_count_dict.get(id, 0) - if request_count_value is None: - return - request_count_dict[id] = request_count_value - 1 - self.router_cache.set_cache(key=request_count_api_key, value=request_count_dict) - - ### TESTING ### - if self.test_flag: - self.logged_failure += 1 - except Exception: - pass - - async def async_log_success_event(self, kwargs, response_obj, start_time, end_time): - try: - if kwargs["litellm_params"].get("metadata") is None: - pass - else: - model_group: Final = kwargs["litellm_params"]["metadata"].get("model_group", None) - - id = kwargs["litellm_params"].get("model_info", {}).get("id", None) - if model_group is None or id is None: - return - elif isinstance(id, int): - id = str(id) - - request_count_api_key: Final = f"{model_group}_request_count" - # decrement count in cache - request_count_dict: Final = await self.router_cache.async_get_cache(key=request_count_api_key) or {} - request_count_value: Final[int | None] = request_count_dict.get(id, 0) - if request_count_value is None: - return - request_count_dict[id] = request_count_value - 1 - await self.router_cache.async_set_cache(key=request_count_api_key, value=request_count_dict) - - ### TESTING ### - if self.test_flag: - self.logged_success += 1 - except Exception: - pass - - async def async_log_failure_event(self, kwargs, response_obj, start_time, end_time): - try: - if kwargs["litellm_params"].get("metadata") is None: - pass - else: - model_group: Final = kwargs["litellm_params"]["metadata"].get("model_group", None) - id = kwargs["litellm_params"].get("model_info", {}).get("id", None) - if model_group is None or id is None: - return - elif isinstance(id, int): - id = str(id) - - request_count_api_key: Final = f"{model_group}_request_count" - # decrement count in cache - request_count_dict: Final = await self.router_cache.async_get_cache(key=request_count_api_key) or {} - request_count_value: Final[int | None] = request_count_dict.get(id, 0) - if request_count_value is None: - return - request_count_dict[id] = request_count_value - 1 - await self.router_cache.async_set_cache(key=request_count_api_key, value=request_count_dict) - - ### TESTING ### - if self.test_flag: - self.logged_failure += 1 - except Exception: - pass - - def _get_available_deployments( - self, - healthy_deployments: list, - all_deployments: dict, - ): - """ - Helper to get deployments using least busy strategy - """ - for d in healthy_deployments: - ## if healthy deployment not yet used - if d["model_info"]["id"] not in all_deployments: - all_deployments[d["model_info"]["id"]] = 0 - # map deployment to id - # pick least busy deployment - min_traffic = float("inf") - min_deployment = None - for k, v in all_deployments.items(): - if v < min_traffic: - min_traffic = v - min_deployment = k - if min_deployment is not None: - ## check if min deployment is a string, if so, cast it to int - for m in healthy_deployments: - if m["model_info"]["id"] == min_deployment: - return m - min_deployment = random.choice(healthy_deployments) - else: - min_deployment = random.choice(healthy_deployments) - return min_deployment + async def async_log_failure_event( + self, kwargs: Mapping[str, object], response_obj: object, start_time: object, end_time: object + ) -> None: + await self._async_increment(kwargs, -1) + if self.test_flag: + self.logged_failure += 1 def get_available_deployments( - self, - model_group: str, - healthy_deployments: list, - ): - """ - Sync helper to get deployments using least busy strategy - """ - request_count_api_key: Final = f"{model_group}_request_count" - all_deployments: Final = self.router_cache.get_cache(key=request_count_api_key) or {} - return self._get_available_deployments( - healthy_deployments=healthy_deployments, - all_deployments=all_deployments, - ) + self, model_group: str, healthy_deployments: Sequence[Mapping[str, object]] + ) -> Mapping[str, object] | None: + keys: Final = _request_count_keys(model_group, healthy_deployments) + try: + counts: Final = tuple(_as_count(value) for value in self._read_counts(keys)) + except Exception as e: + _warn_unreadable(model_group, e) + return _least_busy(healthy_deployments, (0,) * len(keys)) + return _least_busy(healthy_deployments, counts) - async def async_get_available_deployments(self, model_group: str, healthy_deployments: list): - """ - Async helper to get deployments using least busy strategy - """ - request_count_api_key: Final = f"{model_group}_request_count" - all_deployments: Final = await self.router_cache.async_get_cache(key=request_count_api_key) or {} - return self._get_available_deployments( - healthy_deployments=healthy_deployments, - all_deployments=all_deployments, - ) + async def async_get_available_deployments( + self, model_group: str, healthy_deployments: Sequence[Mapping[str, object]] + ) -> Mapping[str, object] | None: + keys: Final = _request_count_keys(model_group, healthy_deployments) + try: + counts: Final = tuple(_as_count(value) for value in await self._async_read_counts(keys)) + except Exception as e: + _warn_unreadable(model_group, e) + return _least_busy(healthy_deployments, (0,) * len(keys)) + return _least_busy(healthy_deployments, counts) + + def _increment(self, kwargs: Mapping[str, object], delta: int) -> None: + ref: Final = _deployment_ref(kwargs) + if ref is None: + return + key: Final = _request_count_key(*ref) + redis_cache: Final = self.router_cache.redis_cache + try: + if redis_cache is None: + self.router_cache.increment_cache(key, delta, local_only=True, ttl=IN_FLIGHT_COUNT_TTL_SECONDS) + else: + redis_cache.increment_cache(key, delta, ttl=IN_FLIGHT_COUNT_TTL_SECONDS, refresh_ttl=True) + except Exception as e: + _warn_unwritable(key, e) + + async def _async_increment(self, kwargs: Mapping[str, object], delta: int) -> None: + ref: Final = _deployment_ref(kwargs) + if ref is None: + return + key: Final = _request_count_key(*ref) + redis_cache: Final = self.router_cache.redis_cache + try: + if redis_cache is None: + await self.router_cache.async_increment_cache( + key, delta, local_only=True, ttl=IN_FLIGHT_COUNT_TTL_SECONDS + ) + else: + await redis_cache.async_increment(key, delta, ttl=IN_FLIGHT_COUNT_TTL_SECONDS, refresh_ttl=True) + except Exception as e: + _warn_unwritable(key, e) + + def _read_counts(self, keys: tuple[str, ...]) -> tuple[float | None, ...]: + redis_cache: Final = self.router_cache.redis_cache + if redis_cache is None: + return _MEMORY_COUNTS.validate_python(self.router_cache.batch_get_cache(list(keys), local_only=True)) + by_key: Final = _REDIS_COUNTS.validate_python(redis_cache.batch_get_cache(key_list=list(keys))) + return tuple(by_key.get(key) for key in keys) + + async def _async_read_counts(self, keys: tuple[str, ...]) -> tuple[float | None, ...]: + redis_cache: Final = self.router_cache.redis_cache + if redis_cache is None: + return _MEMORY_COUNTS.validate_python( + await self.router_cache.async_batch_get_cache(list(keys), local_only=True) + ) + by_key: Final = _REDIS_COUNTS.validate_python(await redis_cache.async_batch_get_cache(key_list=list(keys))) + return tuple(by_key.get(key) for key in keys) diff --git a/ruff-strict-budget.json b/ruff-strict-budget.json index fd7b30bc314..ceff8c6e15c 100644 --- a/ruff-strict-budget.json +++ b/ruff-strict-budget.json @@ -1,6 +1,6 @@ { "ANN001": { - "limit": 2956 + "limit": 2937 }, "ANN002": { "limit": 71 @@ -9,10 +9,10 @@ "limit": 806 }, "ANN201": { - "limit": 1979 + "limit": 1972 }, "ANN202": { - "limit": 831 + "limit": 830 }, "ANN204": { "limit": 683 @@ -57,7 +57,7 @@ "limit": 3 }, "BLE001": { - "limit": 2916 + "limit": 2915 }, "C401": { "limit": 8 @@ -189,7 +189,7 @@ "limit": 0 }, "S110": { - "limit": 217 + "limit": 212 }, "S112": { "limit": 22 diff --git a/tests/local_testing/test_least_busy_routing.py b/tests/local_testing/test_least_busy_routing.py index 18ab8bf779d..fb83d4e601f 100644 --- a/tests/local_testing/test_least_busy_routing.py +++ b/tests/local_testing/test_least_busy_routing.py @@ -33,8 +33,8 @@ def test_model_added(): } } least_busy_logger.log_pre_api_call(model="test", messages=[], kwargs=kwargs) - request_count_api_key = f"gpt-3.5-turbo_request_count" - assert test_cache.get_cache(key=request_count_api_key) is not None + request_count_api_key = "gpt-3.5-turbo_request_count:1234" + assert test_cache.get_cache(key=request_count_api_key) == 1 def test_get_available_deployments(): @@ -52,8 +52,8 @@ def test_get_available_deployments(): } } least_busy_logger.log_pre_api_call(model="test", messages=[], kwargs=kwargs) - request_count_api_key = f"{model_group}_request_count" - assert test_cache.get_cache(key=request_count_api_key) is not None + request_count_api_key = f"{model_group}_request_count:1234" + assert test_cache.get_cache(key=request_count_api_key) == 1 # test_get_available_deployments() @@ -104,15 +104,20 @@ async def test_router_get_available_deployments(async_test): router.leastbusy_logger.test_flag = True model_group = "azure-model" - request_count_dict = {1: 10, 2: 54, 3: 100} - cache_key = f"{model_group}_request_count" + request_count_dict = {"1": 10, "2": 54, "3": 100} + cache_keys = { + deployment_id: f"{model_group}_request_count:{deployment_id}" + for deployment_id in request_count_dict + } if async_test is True: - await router.cache.async_set_cache(key=cache_key, value=request_count_dict) + for deployment_id, count in request_count_dict.items(): + await router.cache.async_set_cache(key=cache_keys[deployment_id], value=count) deployment = await router.async_get_available_deployment( model=model_group, messages=None, request_kwargs={} ) else: - router.cache.set_cache(key=cache_key, value=request_count_dict) + for deployment_id, count in request_count_dict.items(): + router.cache.set_cache(key=cache_keys[deployment_id], value=count) deployment = router.get_available_deployment(model=model_group, messages=None) print(f"deployment: {deployment}") assert deployment["model_info"]["id"] == "1" @@ -124,15 +129,18 @@ async def test_router_get_available_deployments(async_test): messages=[{"role": "user", "content": "Hey, how's it going?"}], ) - return_dict = router.cache.get_cache(key=cache_key) - # wait 2 seconds time.sleep(2) + return_dict = { + deployment_id: router.cache.get_cache(key=cache_key) + for deployment_id, cache_key in cache_keys.items() + } + assert router.leastbusy_logger.logged_success == 1 - assert return_dict[1] == 10 - assert return_dict[2] == 54 - assert return_dict[3] == 100 + assert return_dict["1"] == 10 + assert return_dict["2"] == 54 + assert return_dict["3"] == 100 ## Test with Real calls ## @@ -192,9 +200,11 @@ async def test_router_atext_completion_streaming(): await asyncio.sleep(random.uniform(0, 2)) await router.atext_completion(model=model, prompt=prompt, stream=True) - cache_key = f"{model}_request_count" ## check if calls equally distributed - cache_dict = router.cache.get_cache(key=cache_key) + cache_dict = { + deployment_id: router.cache.get_cache(key=f"{model}_request_count:{deployment_id}") + for deployment_id in ("1", "2", "3") + } for k, v in cache_dict.items(): assert v == 1, f"Failed. K={k} called v={v} times, cache_dict={cache_dict}" @@ -259,8 +269,10 @@ async def test_router_completion_streaming(): await asyncio.sleep(random.uniform(0, 2)) await router.acompletion(model=model, messages=messages, stream=True) - cache_key = f"{model}_request_count" ## check if calls equally distributed - cache_dict = router.cache.get_cache(key=cache_key) + cache_dict = { + deployment_id: router.cache.get_cache(key=f"{model}_request_count:{deployment_id}") + for deployment_id in ("1", "2", "3") + } for k, v in cache_dict.items(): assert v == 1, f"Failed. K={k} called v={v} times, cache_dict={cache_dict}" diff --git a/tests/test_litellm/router_strategy/test_least_busy.py b/tests/test_litellm/router_strategy/test_least_busy.py new file mode 100644 index 00000000000..32a226a5d5b --- /dev/null +++ b/tests/test_litellm/router_strategy/test_least_busy.py @@ -0,0 +1,151 @@ +import json +from typing import Final + +import pytest + +from litellm.caching.caching import DualCache +from litellm.caching.in_memory_cache import InMemoryCache +from litellm.router_strategy.least_busy import IN_FLIGHT_COUNT_TTL_SECONDS, LeastBusyLoggingHandler + +GROUP: Final = "least-busy-group" +DEPLOYMENT_A: Final[dict[str, object]] = {"model_info": {"id": "dep-a"}} +DEPLOYMENT_B: Final[dict[str, object]] = {"model_info": {"id": "dep-b"}} +HEALTHY: Final = [DEPLOYMENT_A, DEPLOYMENT_B] + + +def _call_kwargs(deployment_id: str) -> dict[str, object]: + return {"litellm_params": {"metadata": {"model_group": GROUP}, "model_info": {"id": deployment_id}}} + + +class SharedRedisCounters: + """Stores JSON strings and hands back a fresh object per read, the way a real Redis client does.""" + + def __init__(self) -> None: + self.encoded: dict[str, str] = {} + self.ttls: dict[str, float] = {} + + def count(self, key: str) -> object: + raw: Final = self.encoded.get(key) + return None if raw is None else json.loads(raw) + + def get_cache(self, key: str, **kwargs: object) -> object: + return self.count(key) + + def set_cache(self, key: str, value: object, **kwargs: object) -> None: + self.encoded[key] = json.dumps(value) + + async def async_get_cache(self, key: str, **kwargs: object) -> object: + return self.count(key) + + async def async_set_cache(self, key: str, value: object, **kwargs: object) -> None: + self.set_cache(key, value) + + def increment_cache(self, key: str, value: int, ttl: float | None = None, refresh_ttl: bool = False) -> int: + current: Final = self.count(key) or 0 + assert isinstance(current, int) + incremented: Final = current + value + self.encoded[key] = json.dumps(incremented) + if ttl is not None and (refresh_ttl or key not in self.ttls): + self.ttls[key] = ttl + return incremented + + async def async_increment(self, key: str, value: float, ttl: int | None = None, refresh_ttl: bool = False) -> float: + return self.increment_cache(key, int(value), ttl, refresh_ttl) + + def batch_get_cache(self, key_list: list[str], **kwargs: object) -> dict[str, object]: + return {key: self.count(key) for key in key_list} + + async def async_batch_get_cache(self, key_list: list[str], **kwargs: object) -> dict[str, object]: + return self.batch_get_cache(key_list) + + +def _worker(shared: SharedRedisCounters | None) -> LeastBusyLoggingHandler: + cache: Final = DualCache(in_memory_cache=InMemoryCache(), redis_cache=shared) # pyright: ignore[reportArgumentType] # duck-typed Redis double + return LeastBusyLoggingHandler(router_cache=cache) + + +@pytest.mark.asyncio +async def test_worker_routes_around_a_request_another_worker_started() -> None: + shared: Final = SharedRedisCounters() + streaming_worker: Final = _worker(shared) + picking_worker: Final = _worker(shared) + + picking_worker.log_pre_api_call(model="m", messages=[], kwargs=_call_kwargs("dep-a")) + await picking_worker.async_log_success_event(_call_kwargs("dep-a"), None, None, None) + + streaming_worker.log_pre_api_call(model="m", messages=[], kwargs=_call_kwargs("dep-a")) + + assert await picking_worker.async_get_available_deployments(GROUP, HEALTHY) is DEPLOYMENT_B + + await streaming_worker.async_log_success_event(_call_kwargs("dep-a"), None, None, None) + + assert await picking_worker.async_get_available_deployments(GROUP, HEALTHY) is DEPLOYMENT_A + + +def test_sync_pick_reads_the_shared_counts() -> None: + shared: Final = SharedRedisCounters() + streaming_worker: Final = _worker(shared) + picking_worker: Final = _worker(shared) + + picking_worker.log_pre_api_call(model="m", messages=[], kwargs=_call_kwargs("dep-a")) + picking_worker.log_success_event(_call_kwargs("dep-a"), None, None, None) + + streaming_worker.log_pre_api_call(model="m", messages=[], kwargs=_call_kwargs("dep-a")) + + assert picking_worker.get_available_deployments(GROUP, HEALTHY) is DEPLOYMENT_B + + streaming_worker.log_failure_event(_call_kwargs("dep-a"), None, None, None) + + assert picking_worker.get_available_deployments(GROUP, HEALTHY) is DEPLOYMENT_A + + +def test_redis_counts_keep_a_refreshed_ttl() -> None: + shared: Final = SharedRedisCounters() + worker: Final = _worker(shared) + + worker.log_pre_api_call(model="m", messages=[], kwargs=_call_kwargs("dep-a")) + worker.log_success_event(_call_kwargs("dep-a"), None, None, None) + + assert shared.count(f"{GROUP}_request_count:dep-a") == 0 + assert shared.ttls == {f"{GROUP}_request_count:dep-a": IN_FLIGHT_COUNT_TTL_SECONDS} + + +@pytest.mark.asyncio +async def test_counts_stay_in_memory_without_redis() -> None: + worker: Final = _worker(None) + + worker.log_pre_api_call(model="m", messages=[], kwargs=_call_kwargs("dep-a")) + + assert await worker.async_get_available_deployments(GROUP, HEALTHY) is DEPLOYMENT_B + assert worker.get_available_deployments(GROUP, HEALTHY) is DEPLOYMENT_B + + await worker.async_log_success_event(_call_kwargs("dep-a"), None, None, None) + + assert await worker.async_get_available_deployments(GROUP, HEALTHY) is DEPLOYMENT_A + assert worker.router_cache.get_cache(f"{GROUP}_request_count:dep-a") == 0 + + +class UnavailableRedis(SharedRedisCounters): + def batch_get_cache(self, key_list: list[str], **kwargs: object) -> dict[str, object]: + raise ConnectionError("redis is down") + + def increment_cache(self, key: str, value: int, ttl: float | None = None, refresh_ttl: bool = False) -> int: + raise ConnectionError("redis is down") + + +def test_redis_outage_never_fails_the_request() -> None: + worker: Final = _worker(UnavailableRedis()) + + worker.log_pre_api_call(model="m", messages=[], kwargs=_call_kwargs("dep-a")) + + assert worker.get_available_deployments(GROUP, HEALTHY) is DEPLOYMENT_A + + +def test_calls_without_a_deployment_are_ignored() -> None: + shared: Final = SharedRedisCounters() + worker: Final = _worker(shared) + + worker.log_pre_api_call(model="m", messages=[], kwargs={"litellm_params": {"metadata": None}}) + worker.log_pre_api_call(model="m", messages=[], kwargs={}) + + assert shared.encoded == {} diff --git a/type-discipline-budget.json b/type-discipline-budget.json index e7186dfe186..e413e6db2c6 100644 --- a/type-discipline-budget.json +++ b/type-discipline-budget.json @@ -1,9 +1,9 @@ { "LIT001": { - "limit": 22180 + "limit": 22176 }, "LIT002": { - "limit": 26729 + "limit": 26721 }, "LIT003": { "limit": 261 @@ -27,10 +27,10 @@ "limit": 0 }, "LIT010": { - "limit": 16426 + "limit": 16412 }, "LIT011": { - "limit": 5506 + "limit": 5505 }, "LIT012": { "limit": 4486