518 lines
18 KiB
Python
518 lines
18 KiB
Python
import os
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import json
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import uuid
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from datetime import datetime, timedelta, timezone
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from fastapi import FastAPI, HTTPException, UploadFile, File, Depends, Security
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from fastapi.middleware.cors import CORSMiddleware
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from fastapi.responses import JSONResponse
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from fastapi.security import APIKeyHeader
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from kafka import KafkaProducer, KafkaConsumer
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from transformers import Qwen2VLForConditionalGeneration, AutoTokenizer, AutoProcessor
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from qwen_vl_utils import process_vision_info
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from decord import VideoReader, cpu
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from PIL import Image
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from redis import Redis
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import io
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import re
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import torch
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from contextlib import asynccontextmanager
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import threading
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import string
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app = FastAPI()
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qwenvl_app = FastAPI()
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app.mount("/qwenvl", qwenvl_app)
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torch.cuda.set_device(1)
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# CORS设置
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ALLOWED_ORIGINS = ['https://beta.obscura.work']
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app.add_middleware(
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CORSMiddleware,
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allow_origins=ALLOWED_ORIGINS,
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allow_credentials=True,
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allow_methods=["*"],
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allow_headers=["*"],
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)
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# 配置
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MODEL_PATH = "/home/zydi/models/qwen/Qwen2-VL-2B-Instruct"
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KAFKA_BROKER = "222.186.10.253:9092"
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KAFKA_TOPIC = "qwenvl"
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KAFKA_GROUP_ID = "qwenvl_group"
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REDIS_HOST = "222.186.10.253"
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REDIS_PORT = 6379
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REDIS_PASSWORD = "Obscura@2024"
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REDIS_DB = 8
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REDIS_API_DB = 12
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REDIS_API_USAGE_DB = 13
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UPLOAD_DIR = "/www/wwwroot/beta.obscura.work/upload_files/upload"
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RESULT_DIR = "/www/wwwroot/beta.obscura.work/upload_files/result"
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MAX_FILE_AGE = timedelta(hours=1)
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# 确保目录存在
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os.makedirs(UPLOAD_DIR, exist_ok=True)
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os.makedirs(RESULT_DIR, exist_ok=True)
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# 初始化 Kafka
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producer = KafkaProducer(bootstrap_servers=[KAFKA_BROKER])
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consumer = KafkaConsumer(
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KAFKA_TOPIC,
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bootstrap_servers=[KAFKA_BROKER],
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group_id=KAFKA_GROUP_ID,
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auto_offset_reset='earliest',
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enable_auto_commit=True,
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value_deserializer=lambda x: json.loads(x.decode('utf-8'))
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)
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# 初始化 Redis
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redis_client = Redis(
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host=REDIS_HOST,
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port=REDIS_PORT,
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password=REDIS_PASSWORD,
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db=REDIS_DB
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)
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redis_api_client = Redis(
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host=REDIS_HOST,
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port=REDIS_PORT,
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password=REDIS_PASSWORD,
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db=REDIS_API_DB
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)
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redis_api_usage_client = Redis(
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host=REDIS_HOST,
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port=REDIS_PORT,
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password=REDIS_PASSWORD,
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db=REDIS_API_USAGE_DB
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)
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# 定义API密钥头部
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api_key_header = APIKeyHeader(name="Authorization", auto_error=False)
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# 定义 base62 字符集
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BASE62 = string.digits + string.ascii_letters
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# 验证API密钥的函数
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async def get_api_key(api_key: str = Security(api_key_header)):
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if api_key and api_key.startswith("Bearer "):
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key = api_key.split(" ")[1]
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if key.startswith("obs-"):
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return key
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raise HTTPException(
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status_code=401,
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detail="无效的API密钥",
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headers={"WWW-Authenticate": "Bearer"},
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)
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async def verify_api_key(api_key: str = Depends(get_api_key)):
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redis_key = f"api_key:{api_key}"
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api_key_info = redis_api_client.hgetall(redis_key)
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if not api_key_info:
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raise HTTPException(status_code=401, detail="无效的API密钥")
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api_key_info = {k.decode('utf-8'): v.decode('utf-8') for k, v in api_key_info.items()}
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if api_key_info.get('is_active') != '1':
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raise HTTPException(status_code=401, detail="API密钥已停用")
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expires_at = datetime.fromisoformat(api_key_info.get('expires_at'))
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if datetime.now(timezone.utc) > expires_at:
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raise HTTPException(status_code=401, detail="API密钥已过期")
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usage_info = redis_api_usage_client.hgetall(redis_key)
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usage_info = {k.decode('utf-8'): v.decode('utf-8') for k, v in usage_info.items()}
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return {
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"api_key": api_key,
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**api_key_info,
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**usage_info
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}
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async def update_token_usage(api_key: str, new_tokens_used: int, model_name: str):
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redis_key = f"api_key:{api_key}"
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current_time = datetime.now(timezone.utc).isoformat()
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pipe = redis_api_usage_client.pipeline()
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# 更新总的token使用量
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pipe.hincrby(redis_key, "tokens_used", new_tokens_used)
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pipe.hset(redis_key, "last_used_at", current_time)
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# 更新特定模型的token使用量
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model_tokens_field = f"{model_name}_tokens_used"
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model_last_used_field = f"{model_name}_last_used_at"
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pipe.hincrby(redis_key, model_tokens_field, new_tokens_used)
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pipe.hset(redis_key, model_last_used_field, current_time)
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pipe.execute()
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def calculate_tokens(file_path: str, file_type: str) -> int:
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base_tokens = 0
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try:
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file_size = os.path.getsize(file_path) # 获取文件大小（字节）
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# 基础token：每MB文件大小消耗10个token
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base_tokens = int((file_size / (1024 * 1024)) * 10)
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if file_type == "image":
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img = Image.open(file_path)
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width, height = img.size
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pixel_count = width * height
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# 图片token：每100个像素额外消耗5个token
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image_tokens = int((pixel_count / 10000) * 5)
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base_tokens += image_tokens
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elif file_type == "video":
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vr = VideoReader(file_path)
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fps = vr.get_avg_fps()
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frame_count = len(vr)
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width, height = vr[0].shape[1], vr[0].shape[0]
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pixel_count = width * height * frame_count
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duration = frame_count / fps # 视频时长（秒）
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# 视频token：每100万像素每秒额外消耗1个token
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video_tokens = int((pixel_count / 10000) * (duration / 60))
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base_tokens += video_tokens
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return max(1, base_tokens) # 确保至少返回1个token
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except Exception as e:
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print(f"计算token时出错: {str(e)}")
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return 1 # 出错时返回默认值1
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# 初始化模型
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model = Qwen2VLForConditionalGeneration.from_pretrained(
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MODEL_PATH, torch_dtype="auto", device_map="cuda:1"
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)
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min_pixels = 128*28*28
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max_pixels = 512*28*28
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processor = AutoProcessor.from_pretrained(MODEL_PATH, min_pixels=min_pixels, max_pixels=max_pixels)
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class MediaAnalysisSystem:
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def __init__(self, model, processor):
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self.model = model
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self.processor = processor
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self.MAX_NUM_FRAMES = 10
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def encode_video(self, video_data):
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def uniform_sample(l, n):
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gap = len(l) / n
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return [l[int(i * gap + gap / 2)] for i in range(n)]
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video_file = io.BytesIO(video_data)
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vr = VideoReader(video_file)
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sample_fps = round(vr.get_avg_fps() / 1)
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frame_idx = list(range(0, len(vr), sample_fps))
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if len(frame_idx) > self.MAX_NUM_FRAMES:
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frame_idx = uniform_sample(frame_idx, self.MAX_NUM_FRAMES)
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frames = vr.get_batch(frame_idx).asnumpy()
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frames = [Image.fromarray(v.astype('uint8')) for v in frames]
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print('num frames:', len(frames))
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return frames
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def process_media(self, media_data, object_name, media_type='image'):
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if not media_data:
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raise ValueError(f"Empty {media_type} data for {object_name}")
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print(f"Processing {media_type}: {object_name}, data size: {len(media_data)} bytes")
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if media_type == 'video':
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frames = self.encode_video(media_data)
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media_content = {"type": "video", "video": frames, "fps": 1.0}
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else: # image
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image = Image.open(io.BytesIO(media_data))
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media_content = {"type": "image", "image": image}
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messages = [
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{
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"role": "user",
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"content": [
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media_content,
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{"type": "text", "text": "用中文尽可能详细地描述这个" + ("视频" if media_type == "video" else "图片") + "，包括场景、人物数量、行为变化等。"},
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],
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}
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]
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text = self.processor.apply_chat_template(
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messages, tokenize=False, add_generation_prompt=True
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)
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image_inputs, video_inputs = process_vision_info(messages)
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inputs = self.processor(
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text=[text],
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images=image_inputs,
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videos=video_inputs,
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padding=True,
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return_tensors="pt",
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)
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inputs = inputs.to('cuda:1')
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generated_ids = self.model.generate(**inputs, max_new_tokens=512)
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generated_ids_trimmed = [
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out_ids[len(in_ids):] for in_ids, out_ids in zip(inputs.input_ids, generated_ids)
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]
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answer = self.processor.batch_decode(
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generated_ids_trimmed, skip_special_tokens=True, clean_up_tokenization_spaces=False
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)[0]
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extracted_info = self.extract_info(answer)
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result = {
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"original_answer": answer,
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"extracted_info": extracted_info,
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"timestamp": datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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}
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if media_type == 'video':
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result["num_frames"] = len(frames)
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return result
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def process_video(self, video_data, object_name):
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return self.process_media(video_data, object_name, media_type='video')
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def process_image(self, image_data, object_name):
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return self.process_media(image_data, object_name, media_type='image')
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@staticmethod
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def extract_time_from_filename(object_name):
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filename = os.path.basename(object_name)
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time_str = filename.split('_')[0] + '_' + filename.split('_')[1].split('.')[0]
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try:
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start_time = datetime.strptime(time_str, "%Y%m%d_%H%M%S")
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end_time = start_time + timedelta(seconds=10)
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return start_time, end_time
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except ValueError:
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print(f"无法从文件名 '{filename}' 解析时间。使用默认时间。")
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return datetime.now(), datetime.now() + timedelta(seconds=10)
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@staticmethod
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def extract_info(answer):
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info = {
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"environment": None,
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"num_people": None,
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"actions": [],
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"interactions": [],
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"objects": [],
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"furniture": []
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}
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environments = ["办公室", "室内", "室外", "会议室"]
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for env in environments:
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if env in answer.lower():
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info["environment"] = env
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break
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people_patterns = [
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r'(\d+)\s*(人|个人|位|名|员工|用户|小朋友|成年人|女性|男性)',
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r'(一|二|三|四|五|六|七|八|九|十)\s*(人|个人|位|名|员工|用户|小朋友|成年人|女性|男性)',
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r'(一个|几个)\s*(人|个人|员工|用户|小朋友|成年人|女性|男性)',
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r'几\s*(名|位)\s*(人|员工|用户|小朋友|成年人|女性|男性)?',
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r'(男|女)(性|生|士)',
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r'(成年|未成年|青少年|老年)\s*(人|群体)',
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r'(员工|职工|工人|学生|顾客|观众|游客|乘客)',
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r'(群众|民众|大众|公众)',
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r'(男女|老少|老幼|大人|小孩)'
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]
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for pattern in people_patterns:
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match = re.search(pattern, answer)
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if match:
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if match.group(1).isdigit():
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info["num_people"] = int(match.group(1))
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elif match.group(1) in ['一个', '一']:
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info["num_people"] = 1
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else:
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num_word_to_digit = {
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'二': 2, '三': 3, '四': 4, '五': 5,
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'六': 6, '七': 7, '八': 8, '九': 9, '十': 10
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}
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info["num_people"] = num_word_to_digit.get(match.group(1), 0)
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break
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actions = ["坐", "站", "摔倒", "跳舞", "转身", "摔", "倒", "倒下", "躺下", "转身", "跳跃", "跳", "躺", "睡", "说话"]
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interactions = ["互动", "交流", "身体语言", "交谈", "讨论", "开会"]
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objects = ["水瓶", "办公用品", "文件", "电脑"]
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furniture = ["椅子", "桌子", "咖啡桌", "文件柜", "床", "沙发"]
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for item_list, key in [(actions, "actions"), (interactions, "interactions"), (objects, "objects"), (furniture, "furniture")]:
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for item in item_list:
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if item in answer:
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info[key].append(item)
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return info
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# 初始化 MediaAnalysisSystem
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media_analysis_system = MediaAnalysisSystem(model, processor)
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async def process_file(file: UploadFile, file_type: str, api_key_info: dict):
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content = await file.read()
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original_extension = os.path.splitext(file.filename)[1]
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filename = f"qwenvl_{uuid.uuid4()}{original_extension}"
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file_path = os.path.join(UPLOAD_DIR, filename)
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with open(file_path, "wb") as f:
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f.write(content)
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# 计算token
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tokens_required = calculate_tokens(file_path, file_type)
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# 检查并更新token使用量
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api_key = api_key_info['api_key']
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usage_key = f"api_key:{api_key}"
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total_tokens = int(redis_api_usage_client.hget(usage_key, "total_tokens") or 0)
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tokens_used = int(redis_api_usage_client.hget(usage_key, "tokens_used") or 0)
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if tokens_used + tokens_required > total_tokens:
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raise HTTPException(status_code=403, detail="Token 余额不足")
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# 更新token使用量
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model_name = "Qwen2-VL-2B-Instruct"
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await update_token_usage(api_key, tokens_required, model_name)
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producer.send(KAFKA_TOPIC, json.dumps({
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"filename": filename,
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"type": file_type
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}).encode('utf-8'))
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redis_key = f"{file_type}_result:{filename}"
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redis_client.set(redis_key, json.dumps({"status": "queued"}))
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# 获取更新后的 token 使用情况
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updated_api_key_info = await verify_api_key(api_key)
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new_tokens_used = int(updated_api_key_info.get("tokens_used", 0))
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model_tokens_used = int(updated_api_key_info.get(f"{model_name}_tokens_used", 0))
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return JSONResponse(content={
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"message": "文件已上传并排队等待处理",
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"filename": filename,
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"tokens_used": tokens_required,
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"total_tokens_used": new_tokens_used,
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f"{model_name}_tokens_used": model_tokens_used,
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"tokens_remaining": total_tokens - new_tokens_used
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})
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@qwenvl_app.post("/upload")
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async def upload_file(file: UploadFile = File(...), api_key_info: dict = Depends(verify_api_key)):
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try:
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file_type = "image" if file.content_type.startswith("image") else "video"
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return await process_file(file, file_type, api_key_info)
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except Exception as e:
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return JSONResponse(content={"error": str(e)}, status_code=500)
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@qwenvl_app.post("/analyze_video")
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async def upload_file(file: UploadFile = File(...), api_key_info: dict = Depends(verify_api_key)):
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api_key_info = await verify_api_key(api_key_info)
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if not api_key_info:
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raise HTTPException(status_code=403, detail="无效的API密钥")
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try:
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return await process_file(file, "video", api_key_info)
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except Exception as e:
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return JSONResponse(content={"error": str(e)}, status_code=500)
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@qwenvl_app.post("/analyze_image")
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async def upload_file(file: UploadFile = File(...), api_key_info: dict = Depends(verify_api_key)):
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api_key_info = await verify_api_key(api_key_info)
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if not api_key_info:
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raise HTTPException(status_code=403, detail="无效的API密钥")
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try:
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return await process_file(file, "image", api_key_info)
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except Exception as e:
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return JSONResponse(content={"error": str(e)}, status_code=500)
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def process_task():
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for message in consumer:
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try:
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if isinstance(message.value, dict):
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task = message.value
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else:
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task = json.loads(message.value.decode('utf-8'))
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filename = task['filename']
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file_type = task['type']
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file_path = os.path.join(UPLOAD_DIR, filename)
|
|
|
|
redis_key = f"{file_type}_result:{filename}"
|
|
redis_client.set(redis_key, json.dumps({"status": "processing"}))
|
|
|
|
with open(file_path, 'rb') as f:
|
|
file_data = f.read()
|
|
|
|
if file_type == "video":
|
|
result = media_analysis_system.process_video(file_data, filename)
|
|
elif file_type == "image":
|
|
result = media_analysis_system.process_image(file_data, filename)
|
|
|
|
# 保存结果到 JSON 文件
|
|
result_file_path = os.path.join(RESULT_DIR, f"{filename}.json")
|
|
with open(result_file_path, 'w', encoding='utf-8') as f:
|
|
json.dump(result, f, ensure_ascii=False, indent=2)
|
|
|
|
# 将结果存储在 Redis 中
|
|
redis_client.set(redis_key, json.dumps({
|
|
"status": "completed",
|
|
"result": result
|
|
}))
|
|
|
|
except Exception as e:
|
|
print(f"Error processing task: {str(e)}")
|
|
if 'filename' in locals() and 'file_type' in locals():
|
|
redis_key = f"{file_type}_result:{filename}"
|
|
redis_client.set(redis_key, json.dumps({"status": "failed", "error": str(e)}))
|
|
else:
|
|
print("Error occurred before task details were extracted")
|
|
|
|
@qwenvl_app.get("/result/{filename}")
|
|
async def get_result(filename: str, api_key: str = Depends(get_api_key)):
|
|
api_key_info = await verify_api_key(api_key)
|
|
if not api_key_info:
|
|
raise HTTPException(status_code=403, detail="无效的API密钥")
|
|
|
|
for file_type in ["video", "image"]:
|
|
redis_key = f"{file_type}_result:{filename}"
|
|
result = redis_client.get(redis_key)
|
|
if result:
|
|
result_json = json.loads(result)
|
|
|
|
if result_json.get("status") == "queued":
|
|
return {"status": "queued", "message": "Your request is in the queue and will be processed soon."}
|
|
elif result_json.get("status") == "processing":
|
|
return {"status": "processing", "message": "Your request is being processed."}
|
|
else:
|
|
return result_json
|
|
|
|
raise HTTPException(status_code=404, detail="Result not found")
|
|
|
|
|
|
async def listen_redis_changes():
|
|
pubsub = redis_client.pubsub()
|
|
pubsub.psubscribe('__keyspace@5__:*_result:*')
|
|
|
|
for message in pubsub.listen():
|
|
if message['type'] == 'pmessage':
|
|
key = message['channel'].decode('utf-8').split(':')[-1]
|
|
print(f"Key changed: {key}")
|
|
|
|
if __name__ == "__main__":
|
|
# 在后台线程中启动Kafka消费者
|
|
consumer_thread = threading.Thread(target=process_task, daemon=True)
|
|
consumer_thread.start()
|
|
|
|
import uvicorn
|
|
uvicorn.run(app, host="0.0.0.0", port=7005) |