import asyncio import random import json import time import aiofiles from tqdm import tqdm from pathlib import Path from fastapi import Request from fastapi.responses import JSONResponse from typing import Union from colorama import Fore, Style from colorama import init init() from ..base_config import setup_logger, init_instance from .SD_civitai_API import AIDRAW from .SD_A1111_webui import AIDRAW as AIDRAW2 from .FLUX_falai import AIDRAW as AIDRAW3 from .FLUX_replicate import AIDRAW as AIDRAW4 from .liblibai import AIDRAW as AIDRAW5 from .tusiart import AIDRAW as AIDRAW6 from .seaart import AIDRAW as AIDRAW7 from .yunjie import AIDRAW as AIDRAW8 from .comfyui import AIDRAW as AIDRAW9 from .novelai import AIDRAW as AIDRAW10 from .midjourney import AIDRAW as AIDRAW11 from .base import Backend from DrawBridgeAPI.locales import _ as i18n class BaseHandler: def __init__( self, payload, request: Request = None, path: str = None, comfyui_task=None, ): self.task_list = [] self.instance_list: list[Backend] = [] self.payload = payload self.request = request self.path = path self.config = init_instance.config self.all_task_list = list(range(len(list(self.config.name_url[0].keys())))) self.enable_backend: dict = {} self.comfyui_task: str = comfyui_task async def get_enable_task( self, enable_task ): """ 此函数的作用是获取示例并且只保留选择了的后端 :param enable_task: :return: """ tasks = [ self.get_civitai_task(), self.get_a1111_task(), self.get_falai_task(), self.get_replicate_task(), self.get_liblibai_task(), self.get_tusiart_task(), self.get_seaart_task(), self.get_yunjie_task(), self.get_comfyui_task(), self.get_novelai_task(), self.get_midjourney_task() ] all_backend_instance = await asyncio.gather(*tasks) all_backend_instance_list = [item for sublist in all_backend_instance for item in sublist] # 获取启动的后端字典 all_backend_dict: dict = self.config.name_url[0] items = list(all_backend_dict.items()) self.enable_backend = dict([items[i] for i in enable_task]) self.instance_list = [all_backend_instance_list[i] for i in enable_task] async def get_civitai_task(self): instance_list = [] counter = 0 for i in self.config.civitai: if i is not None: aidraw_instance = AIDRAW(count=counter, payload=self.payload) counter += 1 instance_list.append(aidraw_instance) return instance_list async def get_a1111_task(self): instance_list = [] counter = 0 for i in self.config.a1111webui['name']: aidraw_instance = AIDRAW2( count=counter, payload=self.payload, request=self.request, path=self.path ) counter += 1 instance_list.append(aidraw_instance) return instance_list async def get_falai_task(self): instance_list = [] counter = 0 for i in self.config.fal_ai: if i is not None: aidraw_instance = AIDRAW3(count=counter, payload=self.payload) counter += 1 instance_list.append(aidraw_instance) return instance_list async def get_replicate_task(self): instance_list = [] counter = 0 for i in self.config.replicate: if i is not None: aidraw_instance = AIDRAW4(count=counter, payload=self.payload) counter += 1 instance_list.append(aidraw_instance) return instance_list async def get_liblibai_task(self): instance_list = [] counter = 0 for i in self.config.liblibai: if i is not None: aidraw_instance = AIDRAW5(count=counter, payload=self.payload) counter += 1 instance_list.append(aidraw_instance) return instance_list async def get_tusiart_task(self): instance_list = [] counter = 0 for i in self.config.tusiart: if i is not None: aidraw_instance = AIDRAW6(count=counter, payload=self.payload) counter += 1 instance_list.append(aidraw_instance) return instance_list async def get_seaart_task(self): instance_list = [] counter = 0 for i in self.config.seaart: if i is not None: aidraw_instance = AIDRAW7(count=counter, payload=self.payload) counter += 1 instance_list.append(aidraw_instance) return instance_list async def get_yunjie_task(self): instance_list = [] counter = 0 for i in self.config.yunjie: if i is not None: aidraw_instance = AIDRAW8(count=counter, payload=self.payload) counter += 1 instance_list.append(aidraw_instance) return instance_list async def get_comfyui_task(self): instance_list = [] counter = 0 hr_mode = self.payload.get('enable_hr', None) for i in self.config.comfyui['name']: try: selected_task = ( "sdbase_txt2img_hr_fix" if hr_mode else self.config.comfyui.get('default_workflows', ['sdbase_txt2img'])[counter] ) except IndexError: selected_task = "sdbase_txt2img" img2img = self.payload.get("init_images", []) if img2img: selected_task = "sdbase_img2img" aidraw_instance = AIDRAW9( count=counter, payload=self.payload, request=self.request, path=self.path, comfyui_api_json=self.comfyui_task or selected_task ) counter += 1 instance_list.append(aidraw_instance) return instance_list async def get_novelai_task(self): instance_list = [] counter = 0 for i in self.config.novelai: aidraw_instance = AIDRAW10( count=counter, payload=self.payload ) counter += 1 instance_list.append(aidraw_instance) return instance_list async def get_midjourney_task(self): instance_list = [] counter = 0 for i in self.config.midjourney['name']: aidraw_instance = AIDRAW11( count=counter, payload=self.payload ) counter += 1 instance_list.append(aidraw_instance) return instance_list class TXT2IMGHandler(BaseHandler): def __init__(self, payload=None, comfyui_task: str = None): super().__init__(comfyui_task=comfyui_task, payload=payload) async def get_all_instance(self) -> tuple[list[Backend], dict]: # 手动选择启动的后端 man_enable_task = self.config.server_settings['enable_txt2img_backends'] if len(man_enable_task) != 0: man_enable_task = man_enable_task else: man_enable_task = self.all_task_list await self.get_enable_task(man_enable_task) return self.instance_list, self.enable_backend class IMG2IMGHandler(BaseHandler): def __init__(self, payload=None, comfyui_task: str = None): super().__init__(comfyui_task=comfyui_task, payload=payload) async def get_all_instance(self) -> tuple[list[Backend], dict]: # 手动选择启动的后端 man_enable_task = self.config.server_settings['enable_img2img_backends'] if len(man_enable_task) != 0: man_enable_task = man_enable_task else: man_enable_task = self.all_task_list await self.get_enable_task(man_enable_task) return self.instance_list, self.enable_backend class A1111WebuiHandler(BaseHandler): async def get_all_instance(self) -> tuple[list[Backend], dict]: await self.get_enable_task([1]) return self.instance_list, self.enable_backend class A1111WebuiHandlerAPI(BaseHandler): async def get_all_instance(self) -> tuple[list[Backend], dict]: man_enable_task = self.config.server_settings['enable_sdapi_backends'] if len(man_enable_task) != 0: man_enable_task = man_enable_task else: man_enable_task = self.all_task_list await self.get_enable_task(man_enable_task) return self.instance_list, self.enable_backend # # class ComfyuiHandler(BaseHandler): # # async def get_all_instance(self) -> tuple[list[Backend], dict]: # # await self.get_enable_task([1]) # # return self.instance_list, self.enable_backend class StaticHandler: lock_to_backend = None prompt_style: list = None @classmethod def set_lock_to_backend(cls, selected_model: str): cls.lock_to_backend = selected_model @classmethod def get_lock_to_backend(cls): return cls.lock_to_backend @classmethod def get_prompt_style(cls): return cls.prompt_style @classmethod def set_prompt_style(cls, prompt_style: list): cls.prompt_style = prompt_style @classmethod def get_backend_options(cls): build_resp = { "samples_save": True, "samples_format": "png", "samples_filename_pattern": "", "save_images_add_number": True, "grid_save": True, "grid_format": "png", "grid_extended_filename": False, "grid_only_if_multiple": True, "grid_prevent_empty_spots": False, "grid_zip_filename_pattern": "", "n_rows": -1.0, "font": "", "grid_text_active_color": "#000000", "grid_text_inactive_color": "#999999", "grid_background_color": "#ffffff", "enable_pnginfo": True, "save_txt": False, "save_images_before_face_restoration": False, "save_images_before_highres_fix": False, "save_images_before_color_correction": False, "save_mask": False, "save_mask_composite": False, "jpeg_quality": 80.0, "webp_lossless": False, "export_for_4chan": True, "img_downscale_threshold": 4.0, "target_side_length": 4000.0, "img_max_size_mp": 200.0, "use_original_name_batch": True, "use_upscaler_name_as_suffix": False, "save_selected_only": True, "save_init_img": False, "temp_dir": "", "clean_temp_dir_at_start": False, "save_incomplete_images": False, "outdir_samples": "", "outdir_txt2img_samples": "outputs/txt2img-images", "outdir_img2img_samples": "outputs/img2img-images", "outdir_extras_samples": "outputs/extras-images", "outdir_grids": "", "outdir_txt2img_grids": "outputs/txt2img-grids", "outdir_img2img_grids": "outputs/img2img-grids", "outdir_save": "log/images", "outdir_init_images": "outputs/init-images", "save_to_dirs": True, "grid_save_to_dirs": True, "use_save_to_dirs_for_ui": False, "directories_filename_pattern": "[date]", "directories_max_prompt_words": 8.0, "ESRGAN_tile": 192.0, "ESRGAN_tile_overlap": 8.0, "realesrgan_enabled_models": [ "R-ESRGAN 4x+", "R-ESRGAN 4x+ Anime6B" ], "upscaler_for_img2img": None, "face_restoration": False, "face_restoration_model": "CodeFormer", "code_former_weight": 0.5, "face_restoration_unload": False, "auto_launch_browser": "Local", "show_warnings": False, "show_gradio_deprecation_warnings": True, "memmon_poll_rate": 8.0, "samples_log_stdout": False, "multiple_tqdm": True, "print_hypernet_extra": False, "list_hidden_files": True, "disable_mmap_load_safetensors": False, "hide_ldm_prints": True, "api_enable_requests": True, "api_forbid_local_requests": True, "api_useragent": "", "unload_models_when_training": False, "pin_memory": False, "save_optimizer_state": False, "save_training_settings_to_txt": True, "dataset_filename_word_regex": "", "dataset_filename_join_string": " ", "training_image_repeats_per_epoch": 1.0, "training_write_csv_every": 500.0, "training_xattention_optimizations": False, "training_enable_tensorboard": False, "training_tensorboard_save_images": False, "training_tensorboard_flush_every": 120.0, "sd_model_checkpoint": cls.lock_to_backend if cls.lock_to_backend else 'DrawBridgeAPI-Auto-Select', "sd_checkpoints_limit": 1.0, "sd_checkpoints_keep_in_cpu": True, "sd_checkpoint_cache": 3, "sd_unet": "None", "enable_quantization": False, "enable_emphasis": True, "enable_batch_seeds": True, "comma_padding_backtrack": 20.0, "CLIP_stop_at_last_layers": 3.0, "upcast_attn": False, "randn_source": "GPU", "tiling": False, "hires_fix_refiner_pass": "second pass", "sdxl_crop_top": 0.0, "sdxl_crop_left": 0.0, "sdxl_refiner_low_aesthetic_score": 2.5, "sdxl_refiner_high_aesthetic_score": 6.0, "sd_vae_explanation": "VAE is a neural network that transforms a standard RGB\nimage into latent space representation and back. Latent space representation is what stable diffusion is working on during sampling\n(i.e. when the progress bar is between empty and full). For txt2img, VAE is used to create a resulting image after the sampling is finished.\nFor img2img, VAE is used to process user's input image before the sampling, and to create an image after sampling.", "sd_vae_checkpoint_cache": 0, "sd_vae": "None", "sd_vae_overrides_per_model_preferences": False, "auto_vae_precision": True, "sd_vae_encode_method": "Full", "sd_vae_decode_method": "Full", "inpainting_mask_weight": 1.0, "initial_noise_multiplier": 1.0, "img2img_extra_noise": 0, "img2img_color_correction": False, "img2img_fix_steps": False, "img2img_background_color": "#ffffff", "img2img_editor_height": 720.0, "img2img_sketch_default_brush_color": "#ffffff", "img2img_inpaint_mask_brush_color": "#ffffff", "img2img_inpaint_sketch_default_brush_color": "#ffffff", "return_mask": False, "return_mask_composite": False, "cross_attention_optimization": "Automatic", "s_min_uncond": 0.0, "token_merging_ratio": 0.0, "token_merging_ratio_img2img": 0.0, "token_merging_ratio_hr": 0.0, "pad_cond_uncond": False, "persistent_cond_cache": True, "batch_cond_uncond": True, "use_old_emphasis_implementation": False, "use_old_karras_scheduler_sigmas": False, "no_dpmpp_sde_batch_determinism": False, "use_old_hires_fix_width_height": False, "dont_fix_second_order_samplers_schedule": False, "hires_fix_use_firstpass_conds": False, "use_old_scheduling": False, "interrogate_keep_models_in_memory": False, "interrogate_return_ranks": False, "interrogate_clip_num_beams": 1.0, "interrogate_clip_min_length": 24.0, "interrogate_clip_max_length": 48.0, "interrogate_clip_dict_limit": 1500.0, "interrogate_clip_skip_categories": [], "interrogate_deepbooru_score_threshold": 0.5, "deepbooru_sort_alpha": True, "deepbooru_use_spaces": True, "deepbooru_escape": True, "deepbooru_filter_tags": "", "extra_networks_show_hidden_directories": True, "extra_networks_hidden_models": "When searched", "extra_networks_default_multiplier": 1.0, "extra_networks_card_width": 0, "extra_networks_card_height": 0, "extra_networks_card_text_scale": 1.0, "extra_networks_card_show_desc": True, "extra_networks_add_text_separator": " ", "ui_extra_networks_tab_reorder": "", "textual_inversion_print_at_load": False, "textual_inversion_add_hashes_to_infotext": True, "sd_hypernetwork": "None", "localization": "None", "gradio_theme": "Default", "gradio_themes_cache": True, "gallery_height": "", "return_grid": True, "do_not_show_images": False, "send_seed": True, "send_size": True, "js_modal_lightbox": True, "js_modal_lightbox_initially_zoomed": True, "js_modal_lightbox_gamepad": False, "js_modal_lightbox_gamepad_repeat": 250.0, "show_progress_in_title": True, "samplers_in_dropdown": True, "dimensions_and_batch_together": True, "keyedit_precision_attention": 0.1, "keyedit_precision_extra": 0.05, "keyedit_delimiters": ".,\\/!?%^*;:{}=`~()", "keyedit_move": True, "quicksettings_list": [ "sd_model_checkpoint", "sd_unet", "sd_vae", "CLIP_stop_at_last_layers" ], "ui_tab_order": [], "hidden_tabs": [], "ui_reorder_list": [], "hires_fix_show_sampler": False, "hires_fix_show_prompts": False, "disable_token_counters": False, "add_model_hash_to_info": True, "add_model_name_to_info": True, "add_user_name_to_info": False, "add_version_to_infotext": True, "disable_weights_auto_swap": True, "infotext_styles": "Apply if any", "show_progressbar": True, "live_previews_enable": True, "live_previews_image_format": "png", "show_progress_grid": True, "show_progress_every_n_steps": 10.0, "show_progress_type": "Approx NN", "live_preview_allow_lowvram_full": False, "live_preview_content": "Prompt", "live_preview_refresh_period": 1000.0, "live_preview_fast_interrupt": False, "hide_samplers": [], "eta_ddim": 0.0, "eta_ancestral": 1.0, "ddim_discretize": "uniform", "s_churn": 0.0, "s_tmin": 0.0, "s_tmax": 0, "s_noise": 1.0, "k_sched_type": "Automatic", "sigma_min": 0.0, "sigma_max": 0.0, "rho": 0.0, "eta_noise_seed_delta": 0, "always_discard_next_to_last_sigma": False, "sgm_noise_multiplier": False, "uni_pc_variant": "bh1", "uni_pc_skip_type": "time_uniform", "uni_pc_order": 3.0, "uni_pc_lower_order_final": True, "postprocessing_enable_in_main_ui": [], "postprocessing_operation_order": [], "upscaling_max_images_in_cache": 5.0, "disabled_extensions": [], "disable_all_extensions": "none", "restore_config_state_file": "", "sd_checkpoint_hash": "91e0f7cbaf70676153810c231e8703bf26b3208c116a3d1f2481cbc666905471" } return build_resp class TaskHandler(StaticHandler): backend_avg_dict: dict = {} write_count: dict = {} backend_images: dict = {} backend_site_list = None load_balance_logger = setup_logger('[AvgTimeCalculator]') load_balance_sample = 10 redis_client = None backend_status = None @classmethod def update_backend_status(cls): cls.backend_status = json.loads(cls.redis_client.get("workload")) @classmethod def get_redis_client(cls): cls.redis_client = init_instance.redis_client @classmethod async def get_backend_avg_work_time(cls) -> dict: backend_sites = cls.backend_site_list avg_time_key = "" avg_time_data = cls.redis_client.get("backend_avg_time") if avg_time_data is None: cls.redis_client.set(avg_time_key, json.dumps(cls.backend_avg_dict)) else: new_data = json.loads(avg_time_data) for key, values in new_data.items(): if key in cls.backend_avg_dict: cls.backend_avg_dict[key].extend( values[-cls.load_balance_sample:] if len(values) >= cls.load_balance_sample else values ) else: cls.backend_avg_dict[key] = (values[-cls.load_balance_sample:] if len(values) >= cls.load_balance_sample else values) cls.backend_avg_dict[key] = cls.backend_avg_dict[key][-10:] avg_time_dict = {} for backend_site in backend_sites: spend_time_list = cls.backend_avg_dict.get(backend_site, []) if spend_time_list and len(spend_time_list) >= cls.load_balance_sample: sorted_list = sorted(spend_time_list) trimmed_list = sorted_list[1:-1] avg_time = sum(trimmed_list) / len(trimmed_list) if trimmed_list else None avg_time_dict[backend_site] = avg_time else: avg_time_dict[backend_site] = None return avg_time_dict @classmethod async def set_backend_work_time(cls, spend_time, backend_site, total_images=1): spend_time_list = cls.backend_avg_dict.get(backend_site, []) spend_time_list.append(int(spend_time/total_images)) if len(spend_time_list) >= cls.load_balance_sample: spend_time_list = spend_time_list[-cls.load_balance_sample:] cls.backend_avg_dict[backend_site] = spend_time_list cls.write_count[backend_site] = cls.write_count.get(backend_site, 0) + 1 if cls.write_count.get(backend_site, 0) >= cls.load_balance_sample: cls.redis_client.set("backend_avg_time", json.dumps(cls.backend_avg_dict)) cls.write_count[backend_site] = 0 # info_str = '' # for key, values in cls.backend_avg_dict.items(): # info_str += f"{key}: 最近10次生成时间{values}\n" # # cls.load_balance_logger.info(info_str) @classmethod def set_backend_image(cls, num=0, backend_site=None, get=False) -> Union[None, dict]: all_backend_dict = {} if backend_site: working_images = cls.backend_images.get(backend_site, 1) working_images += num cls.backend_images[backend_site] = working_images if get: for site in cls.backend_site_list: all_backend_dict[site] = cls.backend_images.get(site, 1) return all_backend_dict @classmethod def set_backend_list(cls, backend_dict): cls.backend_site_list = list(backend_dict.values()) def __init__( self, payload=None, request: Request = None, path: str = None, select_backend: int = None, reutrn_instance: bool = False, model_to_backend: str = None, disable_loadbalance: bool = False, comfyui_json: str = "", override_model_select: bool = False, ): self.payload = payload self.instance_list = [] self.result = None self.request = request self.path = path self.enable_backend = None self.reutrn_instance = reutrn_instance self.select_backend = select_backend self.model_to_backend = model_to_backend # 模型的名称 self.disable_loadbalance = disable_loadbalance self.lock_to_backend = self.get_lock_to_backend() if override_model_select is False else None self.comfyui_json: str = comfyui_json self.total_images = (self.payload.get("batch_size", 1) * self.payload.get("n_iter", 1)) or 1 self.ava_backend_url = None self.ava_backend_index = None @staticmethod def get_backend_name(model_name) -> str: all_model: bytes = init_instance.redis_client.get('models') all_model: dict = json.loads(all_model.decode('utf-8')) for key, models in all_model.items(): if isinstance(models, list): for model in models: if model.get("title") == model_name or model.get("model_name") == model_name: return key @staticmethod def get_backend_index(mapping_dict, key_to_find) -> int: keys = list(mapping_dict.keys()) if key_to_find in keys: return keys.index(key_to_find) return None async def txt2img(self): self.instance_list, self.enable_backend = await TXT2IMGHandler( self.payload, comfyui_task=self.comfyui_json ).get_all_instance() await self.choice_backend() return self.result async def img2img(self): self.instance_list, self.enable_backend = await IMG2IMGHandler( self.payload, comfyui_task=self.comfyui_json ).get_all_instance() await self.choice_backend() return self.result async def sd_api(self) -> JSONResponse or list[Backend]: self.instance_list, self.enable_backend = await A1111WebuiHandlerAPI( self.payload, self.request, self.path ).get_all_instance() await self.choice_backend() return self.result async def choice_backend(self): from DrawBridgeAPI.locales import _ as i18n if self.disable_loadbalance: return backend_url_dict = self.enable_backend self.set_backend_list(backend_url_dict) self.get_redis_client() reverse_dict = {value: key for key, value in backend_url_dict.items()} tasks = [] is_avaiable = 0 status_dict = {} ava_url = None n = -1 e = -1 normal_backend = None idle_backend = [] logger = setup_logger(custom_prefix='[LOAD_BALANCE]') if self.reutrn_instance: self.result = self.instance_list return for i in self.instance_list: task = i.get_backend_working_progress() tasks.append(task) # 获取api队列状态 key = self.get_backend_name(self.model_to_backend or self.lock_to_backend) if self.model_to_backend and key is not None: backend_index = self.get_backend_index(backend_url_dict, key) logger.info(f"{i18n('Manually select model')}: {self.model_to_backend}, {i18n('Backend select')}{key[:24]}") self.ava_backend_url = backend_url_dict[key] self.ava_backend_index = backend_index await self.exec_generate() elif self.lock_to_backend: if self.lock_to_backend and key is not None: backend_index = self.get_backend_index(backend_url_dict, key) logger.info(f"{i18n('Backend locked')}: {key[:24]}") self.ava_backend_url = backend_url_dict[key] self.ava_backend_index = backend_index await self.exec_generate() else: all_resp = await asyncio.gather(*tasks, return_exceptions=True) logger.info(i18n('Starting backend selection')) for resp_tuple in all_resp: e += 1 if isinstance(resp_tuple, None or Exception): logger.warning(i18n('Backend %s is down') % self.instance_list[e].workload_name[:24]) else: try: if resp_tuple[3] in [200, 201]: n += 1 status_dict[resp_tuple[2]] = resp_tuple[0]["eta_relative"] normal_backend = (list(status_dict.keys())) else: raise RuntimeError except RuntimeError or TypeError: logger.warning(i18n('Backend %s is failed or locked') % self.instance_list[e].workload_name[:24]) continue else: # 更改判断逻辑 if resp_tuple[0]["progress"] in [0, 0.0]: is_avaiable += 1 idle_backend.append(normal_backend[n]) else: pass # 显示进度 total = 100 progress = int(resp_tuple[0]["progress"] * 100) show_str = f"{list(backend_url_dict.keys())[e][:24]}" show_str = show_str.ljust(50, "-") bar_format = f"{Fore.CYAN}[Progress] {{l_bar}}{{bar}}|{Style.RESET_ALL}" with tqdm( total=total, desc=show_str + "-->", bar_format=bar_format ) as pbar: pbar.update(progress) if len(normal_backend) == 0: logger.error(i18n('No available backend')) raise RuntimeError(i18n('No available backend')) backend_total_work_time = {} avg_time_dict = await self.get_backend_avg_work_time() backend_image = self.set_backend_image(get=True) eta = 0 for (site, time_), (_, image_count) in zip(avg_time_dict.items(), backend_image.items()): self.load_balance_logger.info( i18n('Backend: %s Average work time: %s seconds, Current tasks: %s') % (site, time_, image_count - 1) ) if site in normal_backend: self.update_backend_status() for key in self.backend_status: if site in key: end_time = self.backend_status[key].get('end_time', None) start_time = self.backend_status[key].get('start_time', None) if start_time: if end_time: eta = 0 else: current_time = time.time() eta = int(current_time - start_time) effective_time = 1 if time_ is None else time_ total_work_time = effective_time * int(image_count) eta = eta if time_ else 0 self.load_balance_logger.info(f"{i18n('Extra time weight')}{eta}") backend_total_work_time[site] = total_work_time - eta if (total_work_time - eta) >= 0 else total_work_time total_time_dict = list(backend_total_work_time.values()) rev_dict = {} for key, value in backend_total_work_time.items(): if value in rev_dict: rev_dict[(value, key)] = value else: rev_dict[value] = key sorted_list = sorted(total_time_dict) fastest_backend = sorted_list[0] ava_url = rev_dict[fastest_backend] self.load_balance_logger.info(i18n('Backend %s is the fastest, has been selected') % ava_url[:24]) ava_url_index = list(backend_url_dict.values()).index(ava_url) self.ava_backend_url = ava_url self.ava_backend_index = ava_url_index await self.exec_generate() # ava_url_tuple = (ava_url, reverse_dict[ava_url], all_resp, len(normal_backend), vram_dict[ava_url]) async def exec_generate(self): self.set_backend_image(self.total_images, self.ava_backend_url) fifo = None try: fifo = await self.instance_list[self.ava_backend_index].send_result_to_api() except: pass finally: self.set_backend_image(-self.total_images, self.ava_backend_url) self.result = fifo.result if fifo is not None else None await self.set_backend_work_time(fifo.spend_time, self.ava_backend_url, fifo.total_img_count)