123 lines
4.9 KiB
Python
123 lines
4.9 KiB
Python
"""Order application service."""
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from fastapi import HTTPException, status
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from sqlalchemy import select
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from sqlalchemy.orm import selectinload
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from app.api.schemas.asset import AssetRead
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from app.api.schemas.order import CreateOrderRequest, CreateOrderResponse, OrderDetailResponse
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from app.application.services.workflow_service import WorkflowService
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from app.domain.enums import CustomerLevel, OrderStatus, ServiceMode
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from app.infra.db.models.order import OrderORM
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from app.infra.db.models.workflow_run import WorkflowRunORM
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from app.workers.workflows.types import PipelineWorkflowInput
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class OrderService:
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"""Application service for order management."""
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def __init__(self) -> None:
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self.workflow_service = WorkflowService()
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async def create_order(self, session, payload: CreateOrderRequest) -> CreateOrderResponse:
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"""Create an order, persist a workflow run, and start Temporal execution."""
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self._validate_mode(payload.customer_level, payload.service_mode)
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order = OrderORM(
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customer_level=payload.customer_level,
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service_mode=payload.service_mode,
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status=OrderStatus.CREATED,
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model_id=payload.model_id,
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pose_id=payload.pose_id,
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garment_asset_id=payload.garment_asset_id,
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scene_ref_asset_id=payload.scene_ref_asset_id,
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)
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session.add(order)
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await session.flush()
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workflow_id = f"order-{order.id}"
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workflow_run = WorkflowRunORM(
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order_id=order.id,
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workflow_id=workflow_id,
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workflow_type=self.workflow_service.workflow_type_for_mode(payload.service_mode),
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status=OrderStatus.CREATED,
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)
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session.add(workflow_run)
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await session.commit()
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workflow_input = PipelineWorkflowInput(
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order_id=order.id,
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workflow_run_id=workflow_run.id,
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customer_level=order.customer_level,
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service_mode=order.service_mode,
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model_id=order.model_id,
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pose_id=order.pose_id,
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garment_asset_id=order.garment_asset_id,
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scene_ref_asset_id=order.scene_ref_asset_id,
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)
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try:
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await self.workflow_service.start_workflow(workflow_input)
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except Exception as exc:
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order.status = OrderStatus.FAILED
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workflow_run.status = OrderStatus.FAILED
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await session.commit()
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raise HTTPException(
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status_code=status.HTTP_503_SERVICE_UNAVAILABLE,
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detail=f"Failed to start Temporal workflow: {exc}",
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) from exc
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return CreateOrderResponse(order_id=order.id, workflow_id=workflow_id, status=order.status)
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async def get_order(self, session, order_id: int) -> OrderDetailResponse:
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"""Return a single order with workflow context and final asset."""
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result = await session.execute(
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select(OrderORM)
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.where(OrderORM.id == order_id)
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.options(
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selectinload(OrderORM.assets),
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selectinload(OrderORM.workflow_runs),
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)
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)
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order = result.scalar_one_or_none()
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if order is None:
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raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail="Order not found")
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workflow_run = order.workflow_runs[0] if order.workflow_runs else None
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final_asset = next((asset for asset in order.assets if asset.id == order.final_asset_id), None)
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return OrderDetailResponse(
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order_id=order.id,
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customer_level=order.customer_level,
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service_mode=order.service_mode,
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status=order.status,
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model_id=order.model_id,
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pose_id=order.pose_id,
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garment_asset_id=order.garment_asset_id,
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scene_ref_asset_id=order.scene_ref_asset_id,
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final_asset_id=order.final_asset_id,
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workflow_id=workflow_run.workflow_id if workflow_run else None,
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current_step=workflow_run.current_step if workflow_run else None,
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final_asset=AssetRead.model_validate(final_asset) if final_asset else None,
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created_at=order.created_at,
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updated_at=order.updated_at,
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)
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@staticmethod
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def _validate_mode(customer_level: CustomerLevel, service_mode: ServiceMode) -> None:
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"""Validate the allowed customer-level and service-mode combinations."""
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if customer_level == CustomerLevel.LOW and service_mode != ServiceMode.AUTO_BASIC:
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raise HTTPException(
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status_code=status.HTTP_400_BAD_REQUEST,
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detail="Low-level customers only support auto_basic",
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)
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if customer_level == CustomerLevel.MID and service_mode != ServiceMode.SEMI_PRO:
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raise HTTPException(
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status_code=status.HTTP_400_BAD_REQUEST,
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detail="Mid-level customers only support semi_pro",
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)
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