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使用Docker打包深度网络模型mar包到服务端

参考链接：Docker torchserve 部署模型流程——以WSL部署YOLO-FaceV2为例_class myhandler(basehandler): def initialize(self,-CSDN博客

1、docker拉取环境镜像命令

docker images

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出现此提示为没有权限取执行命令，此时修改命令为

sudo docker images

出现类似如下界面即为成功
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**注意：**如果没有所需镜像，那么则需要去网上的镜像网站取拉镜像。命令为

docker pull registry.cn-shanghai.aliyuncs.com/jhinno/torch-serve:v6.1
docker pull 镜像

2、启动docker并进行打包

2、1启动docker服务

systemctl start docker

docker run --rm -it -p 8080:8080 -p 8081:8081 -v /home/lxz-2/lyw/class_eval/model_store:/home/model-server/model-store registry.cn-shanghai.aliyuncs.com/jhinno/torch-serve:v6.1

–rm 表示使用完立刻清空内存。

–it 表示交互式容器，会有一个伪终端，可以理解为docker容器的终端，我个人认为docker容器就是一个虚拟机，能更加方便人们去运行代码。

-p端口映射， -p 8080:8080 表示将本地8080端口映射到虚拟机8080端口

-v路径映射： -v /home/lxz-2/lyw/class_eval/model_store:/home/model-server/model-store将 /home/lxz-2/lyw/class_eval/model_store映射/home/model-server/model-store

registry.cn-shanghai.aliyuncs.com/jhinno/torch-serve:v6.1 :所使用的环境

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输入完上述命令后进入docker容器的伪终端，此时所使用的环境为 registry.cn-shanghai.aliyuncs.com/jhinno/torch-serve:v6.1

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2、2 编写handler文件

handler文件，是加载模型预处理推理后处理的过程的函数，可以理解为跑通模型从前到后的步骤，比如加载模型，加载好后需要对数据进行预处理，进行预处理然后进行推理，将得到的加过进行后处理，应用到实际中，最后返回。

load_model、initialize第一个是下载模型用的，第二个是初始化，例如是不是用GPU啊等参数设置的，preprocess，此时这个函数的传参data就是用户在调用接口传递数据，preprocess返回的data会进入到inference的data，同时inference返回的data会进入到postprocess，最后通过接口返回给用户

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import datetime
import os
import pickle
import sys
import zipfile
import numpy as np
import logginglogger = logging.getLogger(__name__)
import base64
import torch
import io
from PIL import Image
from sklearn.preprocessing import StandardScaler, MinMaxScaler
from ts.torch_handler.base_handler import BaseHandler
import astclass FaceDetectHandler(BaseHandler):def __init__(self):super().__init__()# Define your scalers for normalization and standardizationself.scaler = StandardScaler()  # For standardizationself.minmax_scaler = MinMaxScaler()  # For min-max scalingself.args = 14self.order = ['ATTENDANCE_RATE','HEAD_UP_RATE', 'FRONT_RATE','FRONT_SEAT_RATE','TVOTELOG','TPREAMPANSWERLOG','TDISCUSSLOG', 'TSURVEYLOG', 'TCHOOSESOMEONELOG', 'TWORKLOG','VOTELOG','PREAMPANSWERLOG','WORKLOG','CHOOSESOMEONELOG',]self.count = ['VOTELOG', 'WORKLOG', 'PREAMPANSWERLOG', 'CHOOSESOMEONELOG', 'JOBFINISH']def load_model(self, model_path):from model import MyModelprint('loading model...')model = MyModel(1,4,1)# if not os.path.exists(model_path):#     print("Checkpoint not found: " + model_path)#     return# print("Resuming from " + model_path)states = torch.load(model_path, map_location=self.device)model.load_state_dict(states, strict=False)model = model.to(device=self.device)# print("Resumed from " + model_path)self.model = model.eval()def initialize(self, context):properties = context.system_propertieslogger.info(f"Cuda available: {torch.cuda.is_available()}")logger.info(f"GPU available: {torch.cuda.device_count()}")use_cuda = torch.cuda.is_available() and torch.cuda.device_count() > 0self.map_location = 'cuda' if use_cuda else 'cpu'self.device = torch.device(self.map_location + ':' +str(properties.get('gpu_id')) if use_cuda else 'cpu')self.manifest = context.manifestmodel_dir = properties.get('model_dir')logger.info("==================model_dir==========================="" %s loaded successfully", model_dir)self.model_pt_path = Noneself.model_path = None# 读取pth和模型if "serializedFile" in self.manifest["model"]:serialized_file = self.manifest["model"]["serializedFile"]self.model_pt_path = os.path.join(model_dir, serialized_file)model_file = self.manifest['model']['modelFile']# if "modelFile" in self.manifest["model"]:#     model_file = self.manifest['model']['modelFile']#     self.model_path = os.path.join(model_dir, model_file)# logger.info("Model file %s loaded successfully", self.model_pt_path)# with zipfile.ZipFile(model_dir + '/models.zip', 'r') as zip_ref:#     zip_ref.extractall(model_dir)self.load_model(self.model_pt_path)logger.info("Model file %s loaded successfully", self.model_pt_path)def preprocess(self, data):logger.info("preprocess ing~~~~~")logger.info(data)data_dict = data[0]['body']keys = data_dict.keys()if 'ATTENDANCE_RATE' not in keys or 'HEAD_UP_RATE' not in  keys or 'FRONT_RATE' not in keys or 'FRONT_SEAT_RATE' not in keys:return "参数不足"values_array = [data_dict[feature] for feature in self.order]MASK = [1 if value!=0 else 0 for value in values_array]MASK = np.array(MASK, dtype=np.float32).reshape(1, self.args)# 使用 StandardScaler 标准化特征数据# 将 MASK 转换为 PyTorch 张量MASK_tensor = torch.tensor(MASK, dtype=torch.float32).to(self.device)values_array = np.array(values_array, dtype=np.float32).reshape(1,self.args, 1)values_tensor = torch.tensor(values_array, dtype=torch.float32).to(self.device)logger.info(values_tensor)data = {"values_tensor":values_tensor,"MASK_tensor":MASK_tensor}return datadef inference(self, data):logger.info("inference ing~~~~~")logging.info(data)if data=="参数不足":return "参数不足"model = self.modellogger.info("model  loaded")prediction = model(data['values_tensor'],data['MASK_tensor'])logging.info(prediction)return predictiondef postprocess(self, data):logger.info("postprocess ing~~~~~")logging.info(data)if data == "参数不足":return [{"output": "参数不足"}]result = data.item()# results = data_reshape.tolist()return [{"output": result}]

可以本地编写个测试文件，看看是否能跑通


# 添加到 handler 文件的末尾if __name__ == "__main__":import logginglogging.basicConfig(level=logging.INFO)# 模拟 TorchServe 的上下文class MockContext:def __init__(self):self.system_properties = {"model_dir": "./model",  # 假设模型文件存放在 ./model 目录"gpu_id": 0              # 测试时使用 CPU}self.manifest = {"model": {"serializedFile": "model.pth",  # 假设模型权重文件名"modelFile": "model.py"        # 模型定义文件}}# 初始化 Handlerhandler = FaceDetectHandler()context = MockContext()# 确保模型目录存在os.makedirs(context.system_properties["model_dir"], exist_ok=True)# 创建一个虚拟模型文件（如果实际不存在）dummy_model_path = os.path.join(context.system_properties["model_dir"], context.manifest["model"]["serializedFile"])if not os.path.exists(dummy_model_path):torch.save(handler.model.state_dict(), dummy_model_path)# 初始化 Handlerhandler.initialize(context)# 构造测试数据（包含所有必要字段）test_data = [{"body": {"ATTENDANCE_RATE": 0.85,"HEAD_UP_RATE": 0.6,"FRONT_RATE": 0.75,"FRONT_SEAT_RATE": 0.5,"TVOTELOG": 1,"TPREAMPANSWERLOG": 2,"TDISCUSSLOG": 0,"TSURVEYLOG": 1,"TCHOOSESOMEONELOG": 0,"TWORKLOG": 3,"VOTELOG": 1,"PREAMPANSWERLOG": 2,"WORKLOG": 3,"CHOOSESOMEONELOG": 0,"LISTEN_CLASS": 0.9,"WRITE_NOTE": 0.3,"PLAY_PHONE": 0.1,"LIT_TABLE": 0.2}}]# 完整处理流程try:preprocessed = handler.preprocess(test_data)print("预处理结果:", preprocessed)if preprocessed != "参数不足":inference_result = handler.inference(preprocessed)print("推理结果:", inference_result)postprocessed = handler.postprocess(inference_result)print("最终输出:", postprocessed)else:print("错误：输入参数不完整")except Exception as e:print(f"处理出错: {str(e)}")

2.3打包

torch-model-archiver --model-name ml_regression_AICourseScoring_V2.2 --version 2.2 --model-file model.py --serialized-file test_model_loss0.2894_r20.9787_20250327_184525.pth --handler Myhandler.py

需要将参数文件、模型文件’handler文件同时放到一个文件夹下。

–model-name ml_regression_AICourseScoring_V2.2 模型的名字

–version 2.2 版本

–model-file model.py 模型文件

serialized-file test_model_loss0.2894_r20.9787_20250327_184525.pth 参数文件

–handler Myhandler.py handler文件

映射后的文件夹下的文件

外链图片转存失败,源站可能有防盗链机制,建议将图片保存下来直接上传