设计一个完美的多租户广告交易平台（ADX）：架构、功能与实现

from flask import request

def get_tenant_id():
    # 从请求头中获取租户ID
    tenant_id = request.headers.get('X-Tenant-ID')
    if not tenant_id:
        raise ValueError("Tenant ID is required")
    return tenant_id

apiVersion: apps/v1
kind: Deployment
metadata:
  name: rtb-engine
spec:
  replicas: 3
  selector:
    matchLabels:
      app: rtb-engine
  template:
    metadata:
      labels:
        app: rtb-engine
    spec:
      containers:
      - name: rtb-engine
        image: rtb-engine:latest
        resources:
          limits:
            cpu: "2"
            memory: "4Gi"
        env:
        - name: TENANT_ID
          valueFrom:
            fieldRef:
              fieldPath: metadata.labels['tenant-id']

class RTBEngine:
    def __init__(self):
        self.bidders = self.load_bidders()

    def load_bidders(self):
        # 加载所有竞价参与者
        return [GoogleBidder(), FacebookBidder()]

    def handle_request(self, ad_request):
        winning_bid = None
        for bidder in self.bidders:
            bid = bidder.get_bid(ad_request)
            if bid and (not winning_bid or bid.price > winning_bid.price):
                winning_bid = bid
        return winning_bid

import websockets

async def sync_inventory():
    async with websockets.connect('wss://ssp-platform.com/inventory') as ws:
        while True:
            inventory_update = await ws.recv()
            process_inventory_update(inventory_update)

from pyspark.sql import SparkSession

def update_user_profile():
    spark = SparkSession.builder.appName("UserProfileUpdate").getOrCreate()
    user_behavior = spark.read.json("s3://user-behavior-logs/*.json")
    user_profile = user_behavior.groupBy("user_id").agg({
        "click": "sum",
        "view": "sum"
    })
    user_profile.write.parquet("s3://user-profiles/")

from flask import Flask, request, jsonify

app = Flask(__name__)

@app.route('/register', methods=['POST'])
def register_tenant():
    tenant_data = request.json
    tenant_id = create_tenant(tenant_data)
    return jsonify({"tenant_id": tenant_id})

def create_tenant(data):
    # 创建租户并分配资源
    return "tenant-123"

def check_permission(user, resource, action):
    roles = get_user_roles(user)
    for role in roles:
        if role.has_permission(resource, action):
            return True
    return False

from cryptography.fernet import Fernet

key = Fernet.generate_key()
cipher_suite = Fernet(key)

def encrypt_data(data):
    return cipher_suite.encrypt(data.encode())

def decrypt_data(encrypted_data):
    return cipher_suite.decrypt(encrypted_data).decode()

def erase_user_data(user_id):
    user_data = get_user_data(user_id)
    user_data.delete()
    log_erasure(user_id)

import redis

cache = redis.Redis(host='localhost', port=6379, db=0)

def get_cached_data(key):
    data = cache.get(key)
    if not data:
        data = fetch_data_from_db(key)
        cache.set(key, data)
    return data

import aioquic

async def send_request():
    async with aioquic.connect('quic://adx-platform.com') as connection:
        await connection.send(b'GET /ad-request')
        response = await connection.receive()
        return response