import json import openai import re from diffusers import DiffusionPipeline, StableDiffusionPipeline, DPMSolverMultistepScheduler import torch import argparse import flask ps = argparse.ArgumentParser() ps.add_argument("--config", default="config.json", help="Configuration file") args = ps.parse_args() with open(args.config) as f: config_json = json.load(f) class GlobalData: # OPENAI_ORGID = config_json[""] OPENAI_APIKEY = config_json["OpenAI-API-Key"] OPENAI_MODEL = config_json["GPT-Model"] OPENAI_MODEL_TEMPERATURE = 0.66 OPENAI_MODEL_MAXTOKENS = 2048 context_for_users = {} context_for_groups = {} GENERATE_PICTURE_ARG_PAT = re.compile("(\(|（)([0-9]+)[ \n\t]+([0-9]+)[ \n\t]+([0-9]+)(\)|）)") GENERATE_PICTURE_ARG_PAT2 = re.compile("(\(|（)([0-9]+)[ \n\t]+([0-9]+)[ \n\t]+([0-9]+)[ \n\t]+([0-9]+)(\)|）)") GENERATE_PICTURE_NEG_PROMPT_DELIMETER = re.compile("\n+") GENERATE_PICTURE_MAX_ITS = 200 #最大迭代次数 app = flask.Flask(__name__) # 这个用于放行生成的任何图片，替换掉默认的NSFW检查器，公共场合慎重使用 def run_safety_nochecker(image, device, dtype): print("警告：屏蔽了内容安全性检查，可能会产生有害内容") return image, None sd_args = { "pretrained_model_name_or_path" : config_json["Diffusion-Model"], "torch_dtype" : (torch.float16 if config_json.get("UseFP16", True) else torch.float32) } sd_pipe = StableDiffusionPipeline.from_pretrained(**sd_args) sd_pipe.scheduler = DPMSolverMultistepScheduler.from_config(sd_pipe.scheduler.config) if config_json["NoNSFWChecker"]: setattr(sd_pipe, "run_safety_checker", run_safety_nochecker) if torch.backends.mps.is_available(): sd_pipe = sd_pipe.to("mps") elif torch.cuda.is_available(): sd_pipe = sd_pipe.to("cuda") def call_gpt(prompt : str): try: res = openai.Completion.create( model=GlobalData.OPENAI_MODEL, prompt=prompt, max_tokens=GlobalData.OPENAI_MODEL_MAXTOKENS, temperature=GlobalData.OPENAI_MODEL_TEMPERATURE) if len(res["choices"]) > 0: return res["choices"][0]["text"].strip() else: return "" except: return "上下文长度超出模型限制，请对我说\“重置上下文\"，然后再试一次" @app.route("/chat_clear", methods=['POST']) def app_chat_clear(): data = json.loads(flask.globals.request.get_data()) GlobalData.context_for_users[data["user_id"]] = "" print(f"Cleared context for {data['user_id']}") return "" @app.route("/chat", methods=['POST']) def app_chat(): data = json.loads(flask.globals.request.get_data()) #print(data) prompt = GlobalData.context_for_users.get(data["user_id"], "") if not data["text"][-1] in ['?', '？', '.', '。', ',', '，', '!', '！']: data["text"] += "。" prompt += "\n" + data["text"] if len(prompt) > 4000: prompt = prompt[:4000] resp = call_gpt(prompt=prompt) GlobalData.context_for_users[data["user_id"]] = (prompt + resp) print(f"Prompt = {prompt}\nResponse = {resp}") return json.dumps({"user_id" : data["user_id"], "text" : resp, "in_group" : False}) @app.route("/draw", methods=['POST']) def app_draw(): data = json.loads(flask.globals.request.get_data()) prompt = data["prompt"] i = 0 for i in range(len(prompt)): if prompt[i] == ':' or prompt[i] == '：': break if i == len(prompt): return json.dumps({"user_name" : data["user_name"], "filenames" : [], "error" : True, "error_msg" : "格式不对，正确的格式是：生成图片：Prompt 或者 生成图片(宽 高 迭代次数 [图片最大数量(缺省1)])：Prompt"}) match_args = re.match(GlobalData.GENERATE_PICTURE_ARG_PAT2, prompt[:i]) if not match_args is None: W = int(match_args.group(2)) H = int(match_args.group(3)) ITS = int(match_args.group(4)) NUM_PIC = int(match_args.group(5)) else: match_args = re.match(GlobalData.GENERATE_PICTURE_ARG_PAT, prompt[:i]) if not match_args is None: W = int(match_args.group(2)) H = int(match_args.group(3)) ITS = int(match_args.group(4)) NUM_PIC = 1 else: if len(prompt[:i].strip()) != 0: return json.dumps({"user_name" : data["user_name"], "filenames" : [], "error" : True, "error_msg" : "格式不对，正确的格式是：生成图片：Prompt 或者 生成图片(宽 高 迭代次数 [图片最大数量(缺省1)])：Prompt"}) else: W = 768 H = 768 ITS = config_json.get('DefaultDiffutionIterations', 20) NUM_PIC = 1 if W > 2500 or H > 2500: return json.dumps({"user_name" : data["user_name"], "filenames" : [], "error" : True, "error_msg" : "你要求的图片太大了，我不干了～"}) if ITS > GlobalData.GENERATE_PICTURE_MAX_ITS: return json.dumps({"user_name" : data["user_name"], "filenames" : [], "error" : True, "error_msg" : f"迭代次数太多了，不要超过{GlobalData.GENERATE_PICTURE_MAX_ITS}次"}) prompt = prompt[(i+1):].strip() prompts = re.split(GlobalData.GENERATE_PICTURE_NEG_PROMPT_DELIMETER, prompt) prompt = prompts[0] neg_prompt = None if len(prompts) > 1: neg_prompt = prompts[1] print(f"Generating {NUM_PIC} picture(s) with prompt = {prompt} , negative prompt = {neg_prompt}") try: if NUM_PIC > 1 and torch.backends.mps.is_available(): #Apple silicon上的bug：https://github.com/huggingface/diffusers/issues/363 return json.dumps({"user_name" : data["user_name"], "filenames" : [], "error" : True, "error_msg" : "单prompt生成多张图像在Apple silicon上无法实现，相关讨论参考https://github.com/huggingface/diffusers/issues/363"}) images = sd_pipe(prompt=prompt, negative_prompt=neg_prompt, width=W, height=H, num_inference_steps=ITS, num_images_per_prompt=NUM_PIC).images[:NUM_PIC] if len(images) == 0: return json.dumps({"user_name" : data["user_name"], "filenames" : [], "error" : True, "error_msg" : "没有产生任何图像"}) filenames = [] for i, img in enumerate(images): img.save(f"latest-{i}.png") filenames.append(f"latest-{i}.png") return json.dumps({"user_name" : data["user_name"], "filenames" : filenames, "error" : False, "error_msg" : ""}) except Exception as e: return json.dumps({"user_name" : data["user_name"], "filenames" : [], "error" : True, "error_msg" : str(e)}) @app.route("/info", methods=['POST', 'GET']) def app_info(): return "\n".join([f"GPT模型：{config_json['GPT-Model']}", f"Diffusion模型：{config_json['Diffusion-Model']}", "默认图片规格：768x768 RGB三通道", "Diffusion默认迭代轮数：20", f"使用半精度浮点数 : {'是' if config_json.get('UseFP16', True) else '否'}", f"屏蔽NSFW检查：{'是' if config_json['NoNSFWChecker'] else '否'}"]) if __name__ == "__main__": #openai.organization = GlobalData.OPENAI_ORGID if len(GlobalData.OPENAI_APIKEY) == 0: raise RuntimeError("Please set your OpenAI API Key in config.json") openai.api_key = GlobalData.OPENAI_APIKEY app.run(host="0.0.0.0", port=11111)