Files
orion/app/modules/inventory/definition.py
Samir Boulahtit a8fae0fbc7 feat: implement metrics provider pattern for modular dashboard statistics
This commit introduces a protocol-based metrics architecture that allows
each module to provide its own statistics for dashboards without creating
cross-module dependencies.

Key changes:
- Add MetricsProviderProtocol and MetricValue dataclass in contracts module
- Add StatsAggregatorService in core module that discovers and aggregates
  metrics from all enabled modules
- Implement metrics providers for all modules:
  - tenancy: vendor/user counts, team members, domains
  - customers: customer counts
  - cms: pages, media files
  - catalog: products
  - inventory: stock levels
  - orders: order counts, revenue
  - marketplace: import jobs, staging products
- Update dashboard routes to use StatsAggregator instead of direct imports
- Fix VendorPlatform junction table usage (Vendor.platform_id doesn't exist)
- Add comprehensive documentation for the pattern

This architecture ensures:
- Dashboards always work (aggregator in core)
- Each module owns its metrics (no cross-module coupling)
- Optional modules are truly optional (can be removed without breaking app)
- Multi-platform vendors are properly supported via VendorPlatform table

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-02-03 21:11:29 +01:00

159 lines
5.2 KiB
Python

# app/modules/inventory/definition.py
"""
Inventory module definition.
Defines the inventory module including its features, menu items,
route configurations, and self-contained module settings.
"""
from app.modules.base import (
MenuItemDefinition,
MenuSectionDefinition,
ModuleDefinition,
PermissionDefinition,
)
from app.modules.enums import FrontendType
def _get_admin_router():
"""Lazy import of admin router to avoid circular imports."""
from app.modules.inventory.routes.admin import admin_router
return admin_router
def _get_vendor_router():
"""Lazy import of vendor router to avoid circular imports."""
from app.modules.inventory.routes.vendor import vendor_router
return vendor_router
def _get_metrics_provider():
"""Lazy import of metrics provider to avoid circular imports."""
from app.modules.inventory.services.inventory_metrics import inventory_metrics_provider
return inventory_metrics_provider
# Inventory module definition
inventory_module = ModuleDefinition(
code="inventory",
name="Inventory Management",
description=(
"Stock level tracking, inventory locations, low stock alerts, "
"transaction history, and bulk imports."
),
version="1.0.0",
# Module-driven permissions
permissions=[
PermissionDefinition(
id="stock.view",
label_key="inventory.permissions.stock_view",
description_key="inventory.permissions.stock_view_desc",
category="stock",
),
PermissionDefinition(
id="stock.edit",
label_key="inventory.permissions.stock_edit",
description_key="inventory.permissions.stock_edit_desc",
category="stock",
),
PermissionDefinition(
id="stock.transfer",
label_key="inventory.permissions.stock_transfer",
description_key="inventory.permissions.stock_transfer_desc",
category="stock",
),
],
features=[
"inventory_basic", # Basic stock tracking
"inventory_locations", # Multiple warehouse locations
"low_stock_alerts", # Automated low stock notifications
"inventory_purchase_orders", # Purchase order management
"product_management", # Product catalog CRUD
"inventory_transactions", # Stock movement history
"inventory_import", # Bulk inventory import
],
menu_items={
FrontendType.ADMIN: [
"inventory", # Platform-wide inventory view
"vendor-products", # Product catalog management
],
FrontendType.VENDOR: [
"products", # Vendor product catalog
"inventory", # Vendor inventory management
],
},
# New module-driven menu definitions
menus={
FrontendType.ADMIN: [
MenuSectionDefinition(
id="vendorOps",
label_key="inventory.menu.vendor_operations",
icon="cube",
order=40,
items=[
MenuItemDefinition(
id="vendor-products",
label_key="inventory.menu.products",
icon="cube",
route="/admin/vendor-products",
order=10,
),
MenuItemDefinition(
id="inventory",
label_key="inventory.menu.inventory",
icon="archive",
route="/admin/inventory",
order=30,
),
],
),
],
FrontendType.VENDOR: [
MenuSectionDefinition(
id="products",
label_key="inventory.menu.products_inventory",
icon="package",
order=10,
items=[
MenuItemDefinition(
id="inventory",
label_key="inventory.menu.inventory",
icon="clipboard-list",
route="/vendor/{vendor_code}/inventory",
order=20,
),
],
),
],
},
is_core=False,
# =========================================================================
# Self-Contained Module Configuration
# =========================================================================
is_self_contained=True,
services_path="app.modules.inventory.services",
models_path="app.modules.inventory.models",
schemas_path="app.modules.inventory.schemas",
exceptions_path="app.modules.inventory.exceptions",
# Metrics provider for dashboard statistics
metrics_provider=_get_metrics_provider,
)
def get_inventory_module_with_routers() -> ModuleDefinition:
"""
Get inventory module with routers attached.
This function attaches the routers lazily to avoid circular imports
during module initialization.
"""
inventory_module.admin_router = _get_admin_router()
inventory_module.vendor_router = _get_vendor_router()
return inventory_module
__all__ = ["inventory_module", "get_inventory_module_with_routers"]