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| #### What this does #### | |
| # identifies lowest tpm deployment | |
| import dotenv, os, requests, random | |
| from typing import Optional, Union, List, Dict | |
| from datetime import datetime | |
| dotenv.load_dotenv() # Loading env variables using dotenv | |
| import traceback | |
| from litellm import token_counter | |
| from litellm.caching import DualCache | |
| from litellm.integrations.custom_logger import CustomLogger | |
| class LowestTPMLoggingHandler(CustomLogger): | |
| test_flag: bool = False | |
| logged_success: int = 0 | |
| logged_failure: int = 0 | |
| default_cache_time_seconds: int = 1 * 60 * 60 # 1 hour | |
| def __init__(self, router_cache: DualCache, model_list: list): | |
| self.router_cache = router_cache | |
| self.model_list = model_list | |
| def log_success_event(self, kwargs, response_obj, start_time, end_time): | |
| try: | |
| """ | |
| Update TPM/RPM usage on success | |
| """ | |
| if kwargs["litellm_params"].get("metadata") is None: | |
| pass | |
| else: | |
| model_group = 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 | |
| total_tokens = response_obj["usage"]["total_tokens"] | |
| # ------------ | |
| # Setup values | |
| # ------------ | |
| current_minute = datetime.now().strftime("%H-%M") | |
| tpm_key = f"{model_group}:tpm:{current_minute}" | |
| rpm_key = f"{model_group}:rpm:{current_minute}" | |
| # ------------ | |
| # Update usage | |
| # ------------ | |
| ## TPM | |
| request_count_dict = self.router_cache.get_cache(key=tpm_key) or {} | |
| request_count_dict[id] = request_count_dict.get(id, 0) + total_tokens | |
| self.router_cache.set_cache(key=tpm_key, value=request_count_dict) | |
| ## RPM | |
| request_count_dict = self.router_cache.get_cache(key=rpm_key) or {} | |
| request_count_dict[id] = request_count_dict.get(id, 0) + 1 | |
| self.router_cache.set_cache(key=rpm_key, value=request_count_dict) | |
| ### TESTING ### | |
| if self.test_flag: | |
| self.logged_success += 1 | |
| except Exception as e: | |
| traceback.print_exc() | |
| pass | |
| async def async_log_success_event(self, kwargs, response_obj, start_time, end_time): | |
| try: | |
| """ | |
| Update TPM/RPM usage on success | |
| """ | |
| if kwargs["litellm_params"].get("metadata") is None: | |
| pass | |
| else: | |
| model_group = 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 | |
| total_tokens = response_obj["usage"]["total_tokens"] | |
| # ------------ | |
| # Setup values | |
| # ------------ | |
| current_minute = datetime.now().strftime("%H-%M") | |
| tpm_key = f"{model_group}:tpm:{current_minute}" | |
| rpm_key = f"{model_group}:rpm:{current_minute}" | |
| # ------------ | |
| # Update usage | |
| # ------------ | |
| # update cache | |
| ## TPM | |
| request_count_dict = self.router_cache.get_cache(key=tpm_key) or {} | |
| request_count_dict[id] = request_count_dict.get(id, 0) + total_tokens | |
| self.router_cache.set_cache(key=tpm_key, value=request_count_dict) | |
| ## RPM | |
| request_count_dict = self.router_cache.get_cache(key=rpm_key) or {} | |
| request_count_dict[id] = request_count_dict.get(id, 0) + 1 | |
| self.router_cache.set_cache(key=rpm_key, value=request_count_dict) | |
| ### TESTING ### | |
| if self.test_flag: | |
| self.logged_success += 1 | |
| except Exception as e: | |
| traceback.print_exc() | |
| pass | |
| def get_available_deployments( | |
| self, | |
| model_group: str, | |
| healthy_deployments: list, | |
| messages: Optional[List[Dict[str, str]]] = None, | |
| input: Optional[Union[str, List]] = None, | |
| ): | |
| """ | |
| Returns a deployment with the lowest TPM/RPM usage. | |
| """ | |
| # get list of potential deployments | |
| current_minute = datetime.now().strftime("%H-%M") | |
| tpm_key = f"{model_group}:tpm:{current_minute}" | |
| rpm_key = f"{model_group}:rpm:{current_minute}" | |
| tpm_dict = self.router_cache.get_cache(key=tpm_key) | |
| rpm_dict = self.router_cache.get_cache(key=rpm_key) | |
| # ----------------------- | |
| # Find lowest used model | |
| # ---------------------- | |
| lowest_tpm = float("inf") | |
| deployment = None | |
| if tpm_dict is None: # base case | |
| item = random.choice(healthy_deployments) | |
| return item | |
| all_deployments = tpm_dict | |
| 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 | |
| try: | |
| input_tokens = token_counter(messages=messages, text=input) | |
| except: | |
| input_tokens = 0 | |
| for item, item_tpm in all_deployments.items(): | |
| ## get the item from model list | |
| _deployment = None | |
| for m in healthy_deployments: | |
| if item == m["model_info"]["id"]: | |
| _deployment = m | |
| if _deployment is None: | |
| continue # skip to next one | |
| _deployment_tpm = ( | |
| _deployment.get("tpm", None) | |
| or _deployment.get("litellm_params", {}).get("tpm", None) | |
| or _deployment.get("model_info", {}).get("tpm", None) | |
| or float("inf") | |
| ) | |
| _deployment_rpm = ( | |
| _deployment.get("rpm", None) | |
| or _deployment.get("litellm_params", {}).get("rpm", None) | |
| or _deployment.get("model_info", {}).get("rpm", None) | |
| or float("inf") | |
| ) | |
| if item_tpm == 0: | |
| deployment = _deployment | |
| break | |
| elif ( | |
| item_tpm + input_tokens > _deployment_tpm | |
| or rpm_dict[item] + 1 > _deployment_rpm | |
| ): # if user passed in tpm / rpm in the model_list | |
| continue | |
| elif item_tpm < lowest_tpm: | |
| lowest_tpm = item_tpm | |
| deployment = _deployment | |
| return deployment | |