216 lines
8.0 KiB
Python
216 lines
8.0 KiB
Python
# gateway/app/routes/inventory.py
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"""
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Inventory routes for API Gateway - Handles inventory management endpoints
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"""
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from fastapi import APIRouter, Request, Response, HTTPException, Path
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from fastapi.responses import JSONResponse
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import httpx
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import logging
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from typing import Optional
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from app.core.config import settings
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logger = logging.getLogger(__name__)
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router = APIRouter()
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# Inventory service URL - add to settings
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INVENTORY_SERVICE_URL = "http://inventory-service:8000"
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# ================================================================
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# TENANT-SCOPED INVENTORY ENDPOINTS
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# ================================================================
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@router.api_route("/{tenant_id}/inventory/ingredients{path:path}", methods=["GET", "POST", "PUT", "DELETE", "OPTIONS"])
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async def proxy_tenant_ingredients(request: Request, tenant_id: str = Path(...), path: str = ""):
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"""Proxy tenant ingredient requests to inventory service"""
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base_path = f"/api/v1/ingredients"
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# If path is empty or just "/", use base path
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if not path or path == "/" or path == "":
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target_path = base_path
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else:
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# Ensure path starts with "/"
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if not path.startswith("/"):
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path = "/" + path
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target_path = base_path + path
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return await _proxy_to_inventory_service(request, target_path)
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@router.api_route("/{tenant_id}/inventory/stock{path:path}", methods=["GET", "POST", "PUT", "DELETE", "OPTIONS"])
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async def proxy_tenant_stock(request: Request, tenant_id: str = Path(...), path: str = ""):
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"""Proxy tenant stock requests to inventory service"""
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base_path = f"/api/v1/stock"
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# If path is empty or just "/", use base path
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if not path or path == "/" or path == "":
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target_path = base_path
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else:
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# Ensure path starts with "/"
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if not path.startswith("/"):
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path = "/" + path
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target_path = base_path + path
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return await _proxy_to_inventory_service(request, target_path)
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@router.api_route("/{tenant_id}/inventory/alerts{path:path}", methods=["GET", "POST", "PUT", "DELETE", "OPTIONS"])
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async def proxy_tenant_alerts(request: Request, tenant_id: str = Path(...), path: str = ""):
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"""Proxy tenant inventory alert requests to inventory service"""
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base_path = f"/api/v1/alerts"
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# If path is empty or just "/", use base path
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if not path or path == "/" or path == "":
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target_path = base_path
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else:
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# Ensure path starts with "/"
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if not path.startswith("/"):
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path = "/" + path
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target_path = base_path + path
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return await _proxy_to_inventory_service(request, target_path)
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@router.api_route("/{tenant_id}/inventory/dashboard{path:path}", methods=["GET", "OPTIONS"])
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async def proxy_tenant_inventory_dashboard(request: Request, tenant_id: str = Path(...), path: str = ""):
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"""Proxy tenant inventory dashboard requests to inventory service"""
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base_path = f"/api/v1/dashboard"
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# If path is empty or just "/", use base path
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if not path or path == "/" or path == "":
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target_path = base_path
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else:
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# Ensure path starts with "/"
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if not path.startswith("/"):
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path = "/" + path
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target_path = base_path + path
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return await _proxy_to_inventory_service(request, target_path)
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# ================================================================
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# DIRECT INVENTORY ENDPOINTS (for backward compatibility)
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# ================================================================
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@router.api_route("/ingredients{path:path}", methods=["GET", "POST", "PUT", "DELETE", "OPTIONS"])
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async def proxy_ingredients(request: Request, path: str = ""):
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"""Proxy ingredient requests to inventory service"""
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base_path = f"/api/v1/ingredients"
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if not path or path == "/" or path == "":
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target_path = base_path
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else:
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if not path.startswith("/"):
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path = "/" + path
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target_path = base_path + path
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return await _proxy_to_inventory_service(request, target_path)
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@router.api_route("/stock{path:path}", methods=["GET", "POST", "PUT", "DELETE", "OPTIONS"])
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async def proxy_stock(request: Request, path: str = ""):
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"""Proxy stock requests to inventory service"""
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base_path = f"/api/v1/stock"
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if not path or path == "/" or path == "":
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target_path = base_path
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else:
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if not path.startswith("/"):
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path = "/" + path
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target_path = base_path + path
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return await _proxy_to_inventory_service(request, target_path)
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@router.api_route("/alerts{path:path}", methods=["GET", "POST", "PUT", "DELETE", "OPTIONS"])
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async def proxy_alerts(request: Request, path: str = ""):
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"""Proxy inventory alert requests to inventory service"""
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base_path = f"/api/v1/alerts"
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if not path or path == "/" or path == "":
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target_path = base_path
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else:
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if not path.startswith("/"):
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path = "/" + path
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target_path = base_path + path
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return await _proxy_to_inventory_service(request, target_path)
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# ================================================================
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# PROXY HELPER FUNCTION
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# ================================================================
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async def _proxy_to_inventory_service(request: Request, target_path: str):
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"""Proxy request to inventory service with enhanced error handling"""
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# Handle OPTIONS requests directly for CORS
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if request.method == "OPTIONS":
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return Response(
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status_code=200,
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headers={
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"Access-Control-Allow-Origin": "*",
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"Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, OPTIONS",
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"Access-Control-Allow-Headers": "Content-Type, Authorization, X-Tenant-ID",
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"Access-Control-Allow-Credentials": "true",
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"Access-Control-Max-Age": "86400"
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}
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)
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try:
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url = f"{INVENTORY_SERVICE_URL}{target_path}"
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# Forward headers and add user/tenant context
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headers = dict(request.headers)
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headers.pop("host", None)
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# Get request body if present
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body = None
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if request.method in ["POST", "PUT", "PATCH"]:
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body = await request.body()
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# Add query parameters
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params = dict(request.query_params)
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timeout_config = httpx.Timeout(
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connect=30.0, # Connection timeout
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read=600.0, # Read timeout: 10 minutes
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write=30.0, # Write timeout
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pool=30.0 # Pool timeout
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)
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async with httpx.AsyncClient(timeout=timeout_config) as client:
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response = await client.request(
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method=request.method,
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url=url,
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headers=headers,
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content=body,
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params=params
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)
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# Handle different response types
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if response.headers.get("content-type", "").startswith("application/json"):
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try:
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content = response.json()
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except:
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content = {"message": "Invalid JSON response from inventory service"}
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else:
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content = response.text
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return JSONResponse(
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status_code=response.status_code,
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content=content
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)
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except httpx.ConnectTimeout:
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logger.error(f"Connection timeout to inventory service: {INVENTORY_SERVICE_URL}{target_path}")
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raise HTTPException(
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status_code=503,
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detail="Inventory service temporarily unavailable"
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)
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except httpx.ReadTimeout:
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logger.error(f"Read timeout from inventory service: {INVENTORY_SERVICE_URL}{target_path}")
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raise HTTPException(
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status_code=504,
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detail="Inventory service response timeout"
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)
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except Exception as e:
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logger.error(f"Unexpected error proxying to inventory service {INVENTORY_SERVICE_URL}{target_path}: {e}")
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raise HTTPException(
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status_code=500,
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detail="Internal gateway error"
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) |