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import asyncio
from datetime import datetime
from pathlib import Path
from fastapi import FastAPI, HTTPException, BackgroundTasks
from fastapi.responses import JSONResponse
from shared.config import settings
from shared.logger import setup_logger
from shared.models import RepoSubmission, TaskRequest
from student.code_generator import CodeGenerator
from student.github_manager import GitHubManager
from student.notification_client import NotificationClient
logger = setup_logger(__name__)
app = FastAPI(
title="LLM Code Deployment - Student API",
description="API endpoint for receiving build and update requests",
version="1.0.0",
)
# Track ongoing tasks
active_tasks: dict[str, dict] = {}
# Lazy initialization of services
_code_generator = None
_github_manager = None
_notification_client = None
def get_code_generator():
"""Lazy initialization of code generator."""
global _code_generator
if _code_generator is None:
_code_generator = CodeGenerator()
return _code_generator
def get_github_manager():
"""Lazy initialization of GitHub manager."""
global _github_manager
if _github_manager is None:
_github_manager = GitHubManager()
return _github_manager
def get_notification_client():
"""Lazy initialization of notification client."""
global _notification_client
if _notification_client is None:
_notification_client = NotificationClient()
return _notification_client
@app.post("/api/build")
async def build_app(request: TaskRequest, background_tasks: BackgroundTasks) -> JSONResponse:
"""Receive build request and process in background.
Args:
request: Task request with app brief and requirements
background_tasks: FastAPI background tasks
Returns:
HTTP 200 JSON response
"""
logger.info(f"Received build request for task {request.task}, round {request.round}")
# Verify secret
if request.secret != settings.student_secret:
logger.error(f"Invalid secret for task {request.task}")
raise HTTPException(status_code=401, detail="Invalid secret")
# Verify email
if request.email != settings.student_email:
logger.error(f"Email mismatch: expected {settings.student_email}, got {request.email}")
raise HTTPException(status_code=401, detail="Email mismatch")
# Check if task is already in progress
task_key = f"{request.task}-{request.round}"
if task_key in active_tasks:
logger.warning(f"Task {task_key} already in progress")
return JSONResponse(
status_code=200,
content={
"status": "in_progress",
"message": f"Task {task_key} is already being processed",
},
)
# Mark task as active
active_tasks[task_key] = {
"status": "accepted",
"started_at": datetime.utcnow().isoformat(),
}
# Process in background
if request.round == 1:
background_tasks.add_task(process_build_request, request)
else:
background_tasks.add_task(process_update_request, request)
logger.info(f"Accepted task {task_key} for background processing")
return JSONResponse(
status_code=200,
content={
"status": "accepted",
"message": f"Task {task_key} accepted for processing",
"task": request.task,
"round": request.round,
},
)
async def process_build_request(request: TaskRequest) -> None:
"""Process build request in background.
Args:
request: Task request
"""
task_key = f"{request.task}-{request.round}"
try:
logger.info(f"Processing build request for {task_key}")
# Create output directory
output_dir = settings.generated_repos_dir / request.task
output_dir.mkdir(parents=True, exist_ok=True)
# Generate code
logger.info(f"Generating code for {task_key}")
active_tasks[task_key]["status"] = "generating"
get_code_generator().generate_app(request, output_dir)
# Create repo and deploy
logger.info(f"Deploying to GitHub for {task_key}")
active_tasks[task_key]["status"] = "deploying"
repo_url, commit_sha, pages_url = get_github_manager().create_and_deploy(
request.task, output_dir
)
# Prepare submission
submission = RepoSubmission(
email=request.email,
task=request.task,
round=request.round,
nonce=request.nonce,
repo_url=repo_url,
commit_sha=commit_sha,
pages_url=pages_url,
)
# Notify evaluation endpoint
logger.info(f"Notifying evaluation endpoint for {task_key}")
active_tasks[task_key]["status"] = "notifying"
success = await get_notification_client().notify_with_timeout(
request.evaluation_url,
submission,
timeout_minutes=settings.task_timeout_minutes,
)
if success:
logger.info(f"Successfully completed task {task_key}")
active_tasks[task_key]["status"] = "completed"
active_tasks[task_key]["completed_at"] = datetime.utcnow().isoformat()
else:
logger.error(f"Failed to notify evaluation endpoint for {task_key}")
active_tasks[task_key]["status"] = "notification_failed"
except Exception as e:
logger.error(f"Error processing build request {task_key}: {e}", exc_info=True)
active_tasks[task_key]["status"] = "failed"
active_tasks[task_key]["error"] = str(e)
async def process_update_request(request: TaskRequest) -> None:
"""Process update request in background.
Args:
request: Task request
"""
task_key = f"{request.task}-{request.round}"
try:
logger.info(f"Processing update request for {task_key}")
# Use existing output directory
output_dir = settings.generated_repos_dir / request.task
if not output_dir.exists():
# If directory doesn't exist, treat as new build
logger.warning(f"No existing code for {request.task}, creating new")
output_dir.mkdir(parents=True, exist_ok=True)
get_code_generator().generate_app(request, output_dir)
else:
# Generate updated code
logger.info(f"Updating code for {task_key}")
active_tasks[task_key]["status"] = "generating"
get_code_generator().generate_app(request, output_dir)
# Update repo and redeploy
logger.info(f"Redeploying to GitHub for {task_key}")
active_tasks[task_key]["status"] = "deploying"
from shared.utils import sanitize_repo_name
repo_name = sanitize_repo_name(request.task)
try:
repo_url, commit_sha = get_github_manager().update_and_redeploy(repo_name, output_dir)
pages_url = f"https://{settings.github_username}.github.io/{repo_name}/"
except Exception as e:
logger.warning(f"Update failed, creating new repo: {e}")
repo_url, commit_sha, pages_url = get_github_manager().create_and_deploy(
request.task, output_dir
)
# Prepare submission
submission = RepoSubmission(
email=request.email,
task=request.task,
round=request.round,
nonce=request.nonce,
repo_url=repo_url,
commit_sha=commit_sha,
pages_url=pages_url,
)
# Notify evaluation endpoint
logger.info(f"Notifying evaluation endpoint for {task_key}")
active_tasks[task_key]["status"] = "notifying"
success = await get_notification_client().notify_with_timeout(
request.evaluation_url,
submission,
timeout_minutes=settings.task_timeout_minutes,
)
if success:
logger.info(f"Successfully completed task {task_key}")
active_tasks[task_key]["status"] = "completed"
active_tasks[task_key]["completed_at"] = datetime.utcnow().isoformat()
else:
logger.error(f"Failed to notify evaluation endpoint for {task_key}")
active_tasks[task_key]["status"] = "notification_failed"
except Exception as e:
logger.error(f"Error processing update request {task_key}: {e}", exc_info=True)
active_tasks[task_key]["status"] = "failed"
active_tasks[task_key]["error"] = str(e)
@app.get("/api/status/{task_id}")
async def get_task_status(task_id: str) -> JSONResponse:
"""Get status of a task.
Args:
task_id: Task identifier
Returns:
Task status information
"""
matching_tasks = {k: v for k, v in active_tasks.items() if k.startswith(task_id)}
if not matching_tasks:
raise HTTPException(status_code=404, detail="Task not found")
return JSONResponse(content=matching_tasks)
@app.get("/health")
async def health_check() -> JSONResponse:
"""Health check endpoint.
Returns:
Health status
"""
return JSONResponse(
content={
"status": "healthy",
"active_tasks": len(active_tasks),
"timestamp": datetime.utcnow().isoformat(),
}
)
if __name__ == "__main__":
import uvicorn
# Ensure directories exist
settings.ensure_directories()
logger.info(f"Starting Student API on port {settings.student_api_port}")
uvicorn.run(
"student.api:app",
host="0.0.0.0",
port=settings.student_api_port,
reload=True,
)
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