234 lines
10 KiB
Python
234 lines
10 KiB
Python
# ================================================================
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# services/procurement/app/main.py
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# ================================================================
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"""
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Procurement Service - FastAPI Application
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Procurement planning, purchase order management, and supplier integration
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"""
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from fastapi import FastAPI, Request
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from sqlalchemy import text
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from app.core.config import settings
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from app.core.database import database_manager
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from shared.service_base import StandardFastAPIService
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from app.jobs.overdue_po_scheduler import OverduePOScheduler
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class ProcurementService(StandardFastAPIService):
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"""Procurement Service with standardized setup"""
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expected_migration_version = "001_unified_initial_schema"
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async def verify_migrations(self):
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"""Verify database schema matches the latest migrations"""
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try:
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async with self.database_manager.get_session() as session:
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result = await session.execute(text("SELECT version_num FROM alembic_version"))
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version = result.scalar()
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if version != self.expected_migration_version:
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self.logger.error(f"Migration version mismatch: expected {self.expected_migration_version}, got {version}")
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raise RuntimeError(f"Migration version mismatch: expected {self.expected_migration_version}, got {version}")
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self.logger.info(f"Migration verification successful: {version}")
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except Exception as e:
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self.logger.error(f"Migration verification failed: {e}")
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raise
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def __init__(self):
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# Define expected database tables for health checks
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procurement_expected_tables = [
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'procurement_plans',
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'procurement_requirements',
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'purchase_orders',
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'purchase_order_items',
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'deliveries',
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'delivery_items',
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'supplier_invoices',
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'replenishment_plans',
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'replenishment_plan_items',
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'inventory_projections',
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'supplier_allocations',
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'supplier_selection_history'
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]
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# Initialize scheduler, delivery tracking, and rabbitmq client
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self.overdue_po_scheduler = None
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self.delivery_tracking_service = None
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self.rabbitmq_client = None
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self.event_publisher = None
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super().__init__(
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service_name="procurement-service",
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app_name=settings.APP_NAME,
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description=settings.DESCRIPTION,
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version=settings.VERSION,
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api_prefix="", # Empty because RouteBuilder already includes /api/v1
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database_manager=database_manager,
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expected_tables=procurement_expected_tables,
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enable_messaging=True # Enable RabbitMQ for event publishing
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)
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async def _setup_messaging(self):
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"""Setup messaging for procurement service"""
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from shared.messaging import RabbitMQClient, UnifiedEventPublisher
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try:
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self.rabbitmq_client = RabbitMQClient(settings.RABBITMQ_URL, service_name="procurement-service")
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await self.rabbitmq_client.connect()
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# Create unified event publisher
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self.event_publisher = UnifiedEventPublisher(self.rabbitmq_client, "procurement-service")
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self.logger.info("Procurement service messaging setup completed")
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except Exception as e:
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self.logger.error("Failed to setup procurement messaging", error=str(e))
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raise
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async def _cleanup_messaging(self):
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"""Cleanup messaging for procurement service"""
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try:
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if self.rabbitmq_client:
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await self.rabbitmq_client.disconnect()
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self.logger.info("Procurement service messaging cleanup completed")
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except Exception as e:
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self.logger.error("Error during procurement messaging cleanup", error=str(e))
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async def on_startup(self, app: FastAPI):
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"""Custom startup logic for procurement service"""
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await super().on_startup(app)
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self.logger.info("Procurement Service starting up...")
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# Start delivery tracking service (APScheduler with leader election)
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from app.services.delivery_tracking_service import DeliveryTrackingService
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self.delivery_tracking_service = DeliveryTrackingService(
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event_publisher=self.event_publisher,
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config=settings,
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database_manager=self.database_manager
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)
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await self.delivery_tracking_service.start()
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self.logger.info("Delivery tracking service started")
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# Initialize Redis for caching (optional - service can run without Redis)
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from shared.redis_utils import initialize_redis, get_redis_client
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try:
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redis_url = settings.REDIS_URL # Use configured Redis URL with TLS and auth
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await initialize_redis(redis_url, db=settings.REDIS_DB, max_connections=settings.REDIS_MAX_CONNECTIONS)
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redis_client = await get_redis_client()
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self.logger.info("Redis initialized successfully for procurement service",
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redis_url=redis_url.split("@")[-1], db=settings.REDIS_DB)
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except Exception as e:
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self.logger.warning("Failed to initialize Redis for caching, service will continue without caching",
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error=str(e), redis_url=redis_url.split("@")[-1] if 'redis_url' in locals() else "unknown")
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redis_client = None
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# Store in app state for internal API access
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app.state.delivery_tracking_service = self.delivery_tracking_service
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app.state.event_publisher = self.event_publisher
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app.state.redis_client = redis_client
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# Start overdue PO scheduler
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if self.rabbitmq_client and self.rabbitmq_client.connected:
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self.overdue_po_scheduler = OverduePOScheduler(
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rabbitmq_client=self.rabbitmq_client,
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check_interval_seconds=3600 # Check every hour
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)
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await self.overdue_po_scheduler.start()
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self.logger.info("Overdue PO scheduler started")
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else:
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self.logger.warning("RabbitMQ not available, overdue PO scheduler not started")
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async def on_shutdown(self, app: FastAPI):
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"""Custom shutdown logic for procurement service"""
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self.logger.info("Procurement Service shutting down...")
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# Close Redis connections (if initialized)
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try:
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from shared.redis_utils import close_redis
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await close_redis()
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self.logger.info("Redis connections closed")
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except Exception as e:
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self.logger.debug("Redis cleanup failed or Redis was not initialized", error=str(e))
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# Stop delivery tracking service
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if self.delivery_tracking_service:
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await self.delivery_tracking_service.stop()
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self.logger.info("Delivery tracking service stopped")
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# Stop overdue PO scheduler
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if self.overdue_po_scheduler:
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await self.overdue_po_scheduler.stop()
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self.logger.info("Overdue PO scheduler stopped")
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await super().on_shutdown(app)
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def get_service_features(self):
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"""Return procurement-specific features"""
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return [
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"procurement_planning",
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"purchase_order_management",
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"delivery_tracking",
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"invoice_management",
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"supplier_integration",
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"local_production_support",
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"recipe_explosion"
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]
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# Create service instance
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service = ProcurementService()
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# Create FastAPI app with standardized setup
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app = service.create_app()
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# Setup standard endpoints (health, readiness, metrics)
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service.setup_standard_endpoints()
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# Include routers
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from app.api.procurement_plans import router as procurement_plans_router
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from app.api.purchase_orders import router as purchase_orders_router
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from app.api import internal_transfer # Internal Transfer Routes
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from app.api import replenishment # Enhanced Replenishment Planning Routes
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from app.api import analytics # Procurement Analytics Routes
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from app.api import internal_delivery # Internal Delivery Tracking Routes
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from app.api import ml_insights # ML insights endpoint
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from app.api import internal_demo # Internal demo data cloning
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from app.api.expected_deliveries import router as expected_deliveries_router # Expected Deliveries Routes
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from app.api.internal_delivery_tracking import router as internal_delivery_tracking_router # NEW: Internal trigger endpoint
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service.add_router(procurement_plans_router)
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service.add_router(purchase_orders_router)
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service.add_router(internal_transfer.router, tags=["internal-transfer"]) # Internal transfer routes
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service.add_router(replenishment.router, tags=["replenishment"]) # RouteBuilder already includes full path
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service.add_router(analytics.router, tags=["analytics"]) # RouteBuilder already includes full path
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service.add_router(internal_demo.router, tags=["internal-demo"]) # Internal demo data cloning
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service.add_router(internal_delivery.router, tags=["internal-delivery"]) # Internal delivery tracking
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service.add_router(internal_delivery_tracking_router, tags=["internal-delivery-tracking"]) # NEW: Delivery alert trigger
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service.add_router(ml_insights.router) # ML insights endpoint
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service.add_router(ml_insights.internal_router) # Internal ML insights endpoint
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service.add_router(expected_deliveries_router, tags=["expected-deliveries"]) # Expected deliveries endpoint
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@app.middleware("http")
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async def logging_middleware(request: Request, call_next):
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"""Add request logging middleware"""
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import time
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start_time = time.time()
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response = await call_next(request)
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process_time = time.time() - start_time
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service.logger.info("HTTP request processed",
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method=request.method,
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url=str(request.url),
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status_code=response.status_code,
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process_time=round(process_time, 4))
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return response
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if __name__ == "__main__":
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import uvicorn
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uvicorn.run(
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"main:app",
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host="0.0.0.0",
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port=8000,
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reload=settings.DEBUG
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)
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