feat(scheduler): implement scheduler service for background tasks and credit refills; add endpoints for admin control
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133
app/services/credit_service.py
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133
app/services/credit_service.py
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"""Credit management service for handling daily credit refills."""
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import logging
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from datetime import datetime
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from app.database import db
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from app.models.user import User
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logger = logging.getLogger(__name__)
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class CreditService:
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"""Service for managing user credits and daily refills."""
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@staticmethod
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def refill_all_users_credits() -> dict:
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"""
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Refill credits for all active users based on their plan.
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This function:
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1. Gets all active users
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2. For each user, adds their plan's daily credit amount
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3. Ensures credits never exceed the plan's max_credits limit
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4. Updates all users in a single database transaction
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Returns:
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dict: Summary of the refill operation
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"""
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try:
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# Get all active users with their plans
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users = User.query.filter_by(is_active=True).all()
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if not users:
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logger.info("No active users found for credit refill")
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return {
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"success": True,
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"users_processed": 0,
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"credits_added": 0,
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"message": "No active users found"
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}
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users_processed = 0
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total_credits_added = 0
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for user in users:
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if not user.plan:
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logger.warning(f"User {user.email} has no plan assigned, skipping")
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continue
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# Calculate new credit amount, capped at plan max
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current_credits = user.credits or 0
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plan_daily_credits = user.plan.credits
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max_credits = user.plan.max_credits
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# Add daily credits but don't exceed maximum
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new_credits = min(current_credits + plan_daily_credits, max_credits)
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credits_added = new_credits - current_credits
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if credits_added > 0:
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user.credits = new_credits
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user.updated_at = datetime.utcnow()
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total_credits_added += credits_added
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logger.debug(
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f"User {user.email}: {current_credits} -> {new_credits} "
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f"(+{credits_added} credits, plan: {user.plan.code})"
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)
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else:
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logger.debug(
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f"User {user.email}: Already at max credits "
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f"({current_credits}/{max_credits})"
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)
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users_processed += 1
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# Commit all changes in a single transaction
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db.session.commit()
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logger.info(
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f"Daily credit refill completed: {users_processed} users processed, "
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f"{total_credits_added} total credits added"
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)
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return {
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"success": True,
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"users_processed": users_processed,
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"credits_added": total_credits_added,
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"message": f"Successfully refilled credits for {users_processed} users"
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}
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except Exception as e:
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# Rollback transaction on error
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db.session.rollback()
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logger.error(f"Error during daily credit refill: {str(e)}")
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return {
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"success": False,
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"users_processed": 0,
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"credits_added": 0,
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"error": str(e),
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"message": "Credit refill failed"
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}
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@staticmethod
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def get_user_credit_info(user_id: int) -> dict:
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"""
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Get detailed credit information for a specific user.
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Args:
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user_id: The user's ID
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Returns:
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dict: User's credit information
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"""
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user = User.query.get(user_id)
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if not user:
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return {"error": "User not found"}
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if not user.plan:
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return {"error": "User has no plan assigned"}
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return {
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"user_id": user.id,
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"email": user.email,
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"current_credits": user.credits,
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"plan": {
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"code": user.plan.code,
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"name": user.plan.name,
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"daily_credits": user.plan.credits,
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"max_credits": user.plan.max_credits
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},
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"is_active": user.is_active
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}
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107
app/services/scheduler_service.py
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107
app/services/scheduler_service.py
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"""Scheduler service for managing background tasks with APScheduler."""
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import logging
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from typing import Optional
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from apscheduler.schedulers.background import BackgroundScheduler
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from apscheduler.triggers.cron import CronTrigger
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from app.services.credit_service import CreditService
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logger = logging.getLogger(__name__)
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class SchedulerService:
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"""Service for managing scheduled background tasks."""
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def __init__(self) -> None:
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"""Initialize the scheduler service."""
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self.scheduler: Optional[BackgroundScheduler] = None
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def start(self) -> None:
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"""Start the scheduler and add all scheduled jobs."""
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if self.scheduler is not None:
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logger.warning("Scheduler is already running")
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return
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self.scheduler = BackgroundScheduler()
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# Add daily credit refill job
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self._add_daily_credit_refill_job()
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# Start the scheduler
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self.scheduler.start()
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logger.info("Scheduler started successfully")
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def stop(self) -> None:
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"""Stop the scheduler."""
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if self.scheduler is not None:
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self.scheduler.shutdown()
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self.scheduler = None
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logger.info("Scheduler stopped")
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def _add_daily_credit_refill_job(self) -> None:
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"""Add the daily credit refill job."""
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if self.scheduler is None:
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raise RuntimeError("Scheduler not initialized")
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# Schedule daily at 00:00 UTC
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trigger = CronTrigger(hour=0, minute=0)
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self.scheduler.add_job(
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func=self._run_daily_credit_refill,
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trigger=trigger,
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id="daily_credit_refill",
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name="Daily Credit Refill",
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replace_existing=True,
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)
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logger.info("Daily credit refill job scheduled for 00:00 UTC")
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def _run_daily_credit_refill(self) -> None:
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"""Execute the daily credit refill task."""
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logger.info("Starting daily credit refill task")
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try:
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result = CreditService.refill_all_users_credits()
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if result["success"]:
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logger.info(
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f"Daily credit refill completed successfully: "
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f"{result['users_processed']} users processed, "
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f"{result['credits_added']} credits added"
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)
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else:
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logger.error(f"Daily credit refill failed: {result['message']}")
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except Exception as e:
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logger.exception(f"Error during daily credit refill: {e}")
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def trigger_credit_refill_now(self) -> dict:
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"""Manually trigger credit refill for testing purposes."""
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logger.info("Manually triggering credit refill")
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return CreditService.refill_all_users_credits()
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def get_scheduler_status(self) -> dict:
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"""Get the current status of the scheduler."""
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if self.scheduler is None:
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return {"running": False, "jobs": []}
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jobs = []
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for job in self.scheduler.get_jobs():
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jobs.append({
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"id": job.id,
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"name": job.name,
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"next_run": job.next_run_time.isoformat()
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if job.next_run_time else None,
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"trigger": str(job.trigger),
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})
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return {
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"running": self.scheduler.running,
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"jobs": jobs,
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}
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# Global scheduler instance
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scheduler_service = SchedulerService()
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