lol, I plugged it into Claude for fun.

# Directory structure:
# /app
#   /models
#     __init__.py
#     database.py
#     schemas.py
#   /services
#     __init__.py
#     auth.py
#     scheduler.py
#   /api
#     __init__.py
#     routes.py
#   main.py
#   config.py

# models/database.py
from sqlalchemy import create_engine, Column, Integer, String, Float, ForeignKey, Enum, DateTime
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import relationship
import enum
from datetime import datetime

Base = declarative_base()

class UserRole(enum.Enum):
    ADMIN = "admin"
    DEVELOPER = "developer"
    VIEWER = "viewer"

class DeploymentStatus(enum.Enum):
    PENDING = "pending"
    RUNNING = "running"
    COMPLETED = "completed"
    FAILED = "failed"

class User(Base):
    __tablename__ = "users"

    id = Column(Integer, primary_key=True)
    username = Column(String, unique=True)
    password = Column(String)  # Store hashed password
    role = Column(Enum(UserRole), default=UserRole.DEVELOPER)
    organization_id = Column(Integer, ForeignKey('organizations.id'))

    organization = relationship("Organization", back_populates="users")
    deployments = relationship("Deployment", back_populates="user")

class Organization(Base):
    __tablename__ = "organizations"

    id = Column(Integer, primary_key=True)
    name = Column(String, unique=True)
    invite_code = Column(String, unique=True)

    users = relationship("User", back_populates="organization")
    clusters = relationship("Cluster", back_populates="organization")

class Cluster(Base):
    __tablename__ = "clusters"

    id = Column(Integer, primary_key=True)
    name = Column(String)
    organization_id = Column(Integer, ForeignKey('organizations.id'))

    total_ram = Column(Float)  # in GB
    total_cpu = Column(Float)  # in cores
    total_gpu = Column(Integer)

    available_ram = Column(Float)
    available_cpu = Column(Float)
    available_gpu = Column(Integer)

    organization = relationship("Organization", back_populates="clusters")
    deployments = relationship("Deployment", back_populates="cluster")

class Deployment(Base):
    __tablename__ = "deployments"

    id = Column(Integer, primary_key=True)
    name = Column(String)
    docker_image = Column(String)
    priority = Column(Integer, default=1)  # 1 (lowest) to 5 (highest)
    status = Column(Enum(DeploymentStatus), default=DeploymentStatus.PENDING)

    ram_required = Column(Float)
    cpu_required = Column(Float)
    gpu_required = Column(Integer)

    created_at = Column(DateTime, default=datetime.utcnow)
    started_at = Column(DateTime, nullable=True)
    completed_at = Column(DateTime, nullable=True)

    user_id = Column(Integer, ForeignKey('users.id'))
    cluster_id = Column(Integer, ForeignKey('clusters.id'))
    depends_on = Column(Integer, ForeignKey('deployments.id'), nullable=True)

    user = relationship("User", back_populates="deployments")
    cluster = relationship("Cluster", back_populates="deployments")

# services/auth.py
from passlib.context import CryptContext
from datetime import datetime, timedelta
from jose import JWTError, jwt
from fastapi import HTTPException, Security
from fastapi.security import HTTPBearer, HTTPAuthorizationCredentials

pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
security = HTTPBearer()

SECRET_KEY = "your-secret-key"  # In production, use environment variable
ALGORITHM = "HS256"
ACCESS_TOKEN_EXPIRE_MINUTES = 30

def verify_password(plain_password, hashed_password):
    return pwd_context.verify(plain_password, hashed_password)

def get_password_hash(password):
    return pwd_context.hash(password)

def create_access_token(data: dict):
    to_encode = data.copy()
    expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
    to_encode.update({"exp": expire})
    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
    return encoded_jwt

def verify_token(credentials: HTTPAuthorizationCredentials = Security(security)):
    try:
        payload = jwt.decode(credentials.credentials, SECRET_KEY, algorithms=[ALGORITHM])
        return payload
    except JWTError:
        raise HTTPException(status_code=401, detail="Invalid token")

# services/scheduler.py
from typing import List
from models.database import Deployment, Cluster, DeploymentStatus
from sqlalchemy.orm import Session
import heapq

class DeploymentScheduler:
    def __init__(self, db: Session):
        self.db = db

    def _can_deploy(self, deployment: Deployment, cluster: Cluster) -> bool:
        return (
            cluster.available_ram >= deployment.ram_required and
            cluster.available_cpu >= deployment.cpu_required and
            cluster.available_gpu >= deployment.gpu_required
        )

    def _allocate_resources(self, deployment: Deployment, cluster: Cluster):
        cluster.available_ram -= deployment.ram_required
        cluster.available_cpu -= deployment.cpu_required
        cluster.available_gpu -= deployment.gpu_required

    def _release_resources(self, deployment: Deployment, cluster: Cluster):
        cluster.available_ram += deployment.ram_required
        cluster.available_cpu += deployment.cpu_required
        cluster.available_gpu += deployment.gpu_required

    def schedule_deployments(self):
        # Get all pending deployments
        pending_deployments = (
            self.db.query(Deployment)
            .filter(Deployment.status == DeploymentStatus.PENDING)
            .all()
        )

        # Create priority queue
        deployment_queue = []
        for deployment in pending_deployments:
            # Priority queue item: (-priority, created_at, deployment)
            # Negative priority for max-heap behavior
            heapq.heappush(
                deployment_queue,
                (-deployment.priority, deployment.created_at, deployment)
            )

        while deployment_queue:
            _, _, deployment = heapq.heappop(deployment_queue)

            # Check deployment dependencies
            if deployment.depends_on:
                dependent_deployment = (
                    self.db.query(Deployment)
                    .filter(Deployment.id == deployment.depends_on)
                    .first()
                )
                if dependent_deployment.status != DeploymentStatus.COMPLETED:
                    continue

            cluster = deployment.cluster
            if self._can_deploy(deployment, cluster):
                self._allocate_resources(deployment, cluster)
                deployment.status = DeploymentStatus.RUNNING
                deployment.started_at = datetime.utcnow()
                self.db.commit()

# api/routes.py
from fastapi import APIRouter, Depends, HTTPException
from sqlalchemy.orm import Session
from models.database import get_db
from services.auth import verify_token
from services.scheduler import DeploymentScheduler

router = APIRouter()

@router.post("/users/")
async def create_user(user: UserCreate, db: Session = Depends(get_db)):
    # Implementation for user creation

@router.post("/organizations/")
async def create_organization(org: OrganizationCreate, db: Session = Depends(get_db)):
    # Implementation for organization creation

@router.post("/clusters/")
async def create_cluster(cluster: ClusterCreate, db: Session = Depends(get_db)):
    # Implementation for cluster creation

@router.post("/deployments/")
async def create_deployment(deployment: DeploymentCreate, db: Session = Depends(get_db)):
    # Implementation for deployment creation

# main.py
from fastapi import FastAPI
from api.routes import router
from models.database import Base, engine

app = FastAPI(title="MLOps Hypervisor Service")

# Create database tables
Base.metadata.create_all(bind=engine)

app.include_router(router, prefix="/api/v1")