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>
This commit is contained in:
2026-02-03 21:11:29 +01:00
parent a76128e016
commit a8fae0fbc7
28 changed files with 3745 additions and 269 deletions

View File

@@ -1,19 +1,22 @@
# app/modules/core/routes/api/admin_dashboard.py
"""
Admin dashboard and statistics endpoints.
This module uses the StatsAggregator service from core to collect metrics from all
enabled modules. Each module provides its own metrics via the MetricsProvider protocol.
For backward compatibility, this also falls back to the analytics stats_service
for comprehensive statistics that haven't been migrated to the provider pattern yet.
"""
import logging
from fastapi import APIRouter, Depends
from fastapi import APIRouter, Depends, Request
from sqlalchemy.orm import Session
from app.api.deps import get_current_admin_api
from app.core.database import get_db
from app.modules.tenancy.services.admin_service import admin_service
from app.modules.analytics.services.stats_service import stats_service
from models.schema.auth import UserContext
from app.modules.analytics.schemas import (
from app.modules.core.schemas.dashboard import (
AdminDashboardResponse,
ImportStatsResponse,
MarketplaceStatsResponse,
@@ -24,35 +27,106 @@ from app.modules.analytics.schemas import (
UserStatsResponse,
VendorStatsResponse,
)
from app.modules.core.services.stats_aggregator import stats_aggregator
from app.modules.tenancy.services.admin_service import admin_service
from models.schema.auth import UserContext
admin_dashboard_router = APIRouter(prefix="/dashboard")
logger = logging.getLogger(__name__)
def _get_platform_id(request: Request, current_admin: UserContext) -> int:
"""
Get platform_id from available sources in priority order.
Priority:
1. JWT token (token_platform_id) - set when admin selects a platform
2. Request state (set by PlatformContextMiddleware) - for page routes
3. First accessible platform (for platform admins)
4. Fallback to 1 (for super admins with global access)
Returns:
Platform ID to use for queries
"""
# 1. From JWT token (most authoritative for API routes)
if current_admin.token_platform_id:
return current_admin.token_platform_id
# 2. From request state (set by PlatformContextMiddleware)
platform = getattr(request.state, "platform", None)
if platform:
return platform.id
# 3. For platform admins, use their first accessible platform
if current_admin.accessible_platform_ids:
return current_admin.accessible_platform_ids[0]
# 4. Fallback for super admins (global access)
return 1
def _extract_metric_value(
metrics: dict[str, list], category: str, key: str, default: int | float = 0
) -> int | float:
"""Extract a specific metric value from categorized metrics."""
if category not in metrics:
return default
for metric in metrics[category]:
if metric.key == key:
return metric.value
return default
@admin_dashboard_router.get("", response_model=AdminDashboardResponse)
def get_admin_dashboard(
request: Request,
db: Session = Depends(get_db),
current_admin: UserContext = Depends(get_current_admin_api),
):
"""Get admin dashboard with platform statistics (Admin only)."""
user_stats = stats_service.get_user_statistics(db)
vendor_stats = stats_service.get_vendor_statistics(db)
platform_id = _get_platform_id(request, current_admin)
# Get aggregated metrics from all enabled modules
metrics = stats_aggregator.get_admin_dashboard_stats(db=db, platform_id=platform_id)
# Extract user stats from tenancy module
total_users = _extract_metric_value(metrics, "tenancy", "tenancy.total_users", 0)
active_users = _extract_metric_value(metrics, "tenancy", "tenancy.active_users", 0)
inactive_users = _extract_metric_value(metrics, "tenancy", "tenancy.inactive_users", 0)
admin_users = _extract_metric_value(metrics, "tenancy", "tenancy.admin_users", 0)
activation_rate = _extract_metric_value(
metrics, "tenancy", "tenancy.user_activation_rate", 0
)
# Extract vendor stats from tenancy module
total_vendors = _extract_metric_value(metrics, "tenancy", "tenancy.total_vendors", 0)
verified_vendors = _extract_metric_value(
metrics, "tenancy", "tenancy.verified_vendors", 0
)
pending_vendors = _extract_metric_value(
metrics, "tenancy", "tenancy.pending_vendors", 0
)
inactive_vendors = _extract_metric_value(
metrics, "tenancy", "tenancy.inactive_vendors", 0
)
return AdminDashboardResponse(
platform={
"name": "Multi-Tenant Ecommerce Platform",
"version": "1.0.0",
},
users=UserStatsResponse(**user_stats),
users=UserStatsResponse(
total_users=int(total_users),
active_users=int(active_users),
inactive_users=int(inactive_users),
admin_users=int(admin_users),
activation_rate=float(activation_rate),
),
vendors=VendorStatsResponse(
total=vendor_stats.get("total", vendor_stats.get("total_vendors", 0)),
verified=vendor_stats.get(
"verified", vendor_stats.get("verified_vendors", 0)
),
pending=vendor_stats.get("pending", vendor_stats.get("pending_vendors", 0)),
inactive=vendor_stats.get(
"inactive", vendor_stats.get("inactive_vendors", 0)
),
total=int(total_vendors),
verified=int(verified_vendors),
pending=int(pending_vendors),
inactive=int(inactive_vendors),
),
recent_vendors=admin_service.get_recent_vendors(db, limit=5),
recent_imports=admin_service.get_recent_import_jobs(db, limit=10),
@@ -61,67 +135,168 @@ def get_admin_dashboard(
@admin_dashboard_router.get("/stats", response_model=StatsResponse)
def get_comprehensive_stats(
request: Request,
db: Session = Depends(get_db),
current_admin: UserContext = Depends(get_current_admin_api),
):
"""Get comprehensive platform statistics (Admin only)."""
stats_data = stats_service.get_comprehensive_stats(db=db)
platform_id = _get_platform_id(request, current_admin)
# Get aggregated metrics
metrics = stats_aggregator.get_admin_dashboard_stats(db=db, platform_id=platform_id)
# Extract product stats from catalog module
total_products = _extract_metric_value(metrics, "catalog", "catalog.total_products", 0)
# Extract marketplace stats
unique_marketplaces = _extract_metric_value(
metrics, "marketplace", "marketplace.unique_marketplaces", 0
)
unique_brands = _extract_metric_value(
metrics, "marketplace", "marketplace.unique_brands", 0
)
# Extract vendor stats
unique_vendors = _extract_metric_value(metrics, "tenancy", "tenancy.total_vendors", 0)
# Extract inventory stats
inventory_entries = _extract_metric_value(metrics, "inventory", "inventory.entries", 0)
inventory_quantity = _extract_metric_value(
metrics, "inventory", "inventory.total_quantity", 0
)
return StatsResponse(
total_products=stats_data["total_products"],
unique_brands=stats_data["unique_brands"],
unique_categories=stats_data["unique_categories"],
unique_marketplaces=stats_data["unique_marketplaces"],
unique_vendors=stats_data["unique_vendors"],
total_inventory_entries=stats_data["total_inventory_entries"],
total_inventory_quantity=stats_data["total_inventory_quantity"],
total_products=int(total_products),
unique_brands=int(unique_brands),
unique_categories=0, # TODO: Add category tracking
unique_marketplaces=int(unique_marketplaces),
unique_vendors=int(unique_vendors),
total_inventory_entries=int(inventory_entries),
total_inventory_quantity=int(inventory_quantity),
)
@admin_dashboard_router.get("/stats/marketplace", response_model=list[MarketplaceStatsResponse])
@admin_dashboard_router.get(
"/stats/marketplace", response_model=list[MarketplaceStatsResponse]
)
def get_marketplace_stats(
db: Session = Depends(get_db),
current_admin: UserContext = Depends(get_current_admin_api),
):
"""Get statistics broken down by marketplace (Admin only)."""
marketplace_stats = stats_service.get_marketplace_breakdown_stats(db=db)
# For detailed marketplace breakdown, we still use the analytics service
# as the MetricsProvider pattern is for aggregated stats
try:
from app.modules.analytics.services.stats_service import stats_service
return [
MarketplaceStatsResponse(
marketplace=stat["marketplace"],
total_products=stat["total_products"],
unique_vendors=stat["unique_vendors"],
unique_brands=stat["unique_brands"],
)
for stat in marketplace_stats
]
marketplace_stats = stats_service.get_marketplace_breakdown_stats(db=db)
return [
MarketplaceStatsResponse(
marketplace=stat["marketplace"],
total_products=stat["total_products"],
unique_vendors=stat["unique_vendors"],
unique_brands=stat["unique_brands"],
)
for stat in marketplace_stats
]
except ImportError:
# Analytics module not available
logger.warning("Analytics module not available for marketplace breakdown stats")
return []
@admin_dashboard_router.get("/stats/platform", response_model=PlatformStatsResponse)
def get_platform_statistics(
request: Request,
db: Session = Depends(get_db),
current_admin: UserContext = Depends(get_current_admin_api),
):
"""Get comprehensive platform statistics (Admin only)."""
user_stats = stats_service.get_user_statistics(db)
vendor_stats = stats_service.get_vendor_statistics(db)
product_stats = stats_service.get_product_statistics(db)
order_stats = stats_service.get_order_statistics(db)
import_stats = stats_service.get_import_statistics(db)
platform_id = _get_platform_id(request, current_admin)
# Get aggregated metrics from all enabled modules
metrics = stats_aggregator.get_admin_dashboard_stats(db=db, platform_id=platform_id)
# User stats from tenancy
total_users = _extract_metric_value(metrics, "tenancy", "tenancy.total_users", 0)
active_users = _extract_metric_value(metrics, "tenancy", "tenancy.active_users", 0)
inactive_users = _extract_metric_value(metrics, "tenancy", "tenancy.inactive_users", 0)
admin_users = _extract_metric_value(metrics, "tenancy", "tenancy.admin_users", 0)
activation_rate = _extract_metric_value(
metrics, "tenancy", "tenancy.user_activation_rate", 0
)
# Vendor stats from tenancy
total_vendors = _extract_metric_value(metrics, "tenancy", "tenancy.total_vendors", 0)
verified_vendors = _extract_metric_value(
metrics, "tenancy", "tenancy.verified_vendors", 0
)
pending_vendors = _extract_metric_value(
metrics, "tenancy", "tenancy.pending_vendors", 0
)
inactive_vendors = _extract_metric_value(
metrics, "tenancy", "tenancy.inactive_vendors", 0
)
# Product stats from catalog
total_products = _extract_metric_value(metrics, "catalog", "catalog.total_products", 0)
active_products = _extract_metric_value(
metrics, "catalog", "catalog.active_products", 0
)
# Order stats from orders
total_orders = _extract_metric_value(metrics, "orders", "orders.total", 0)
# Import stats from marketplace
total_imports = _extract_metric_value(
metrics, "marketplace", "marketplace.total_imports", 0
)
pending_imports = _extract_metric_value(
metrics, "marketplace", "marketplace.pending_imports", 0
)
processing_imports = _extract_metric_value(
metrics, "marketplace", "marketplace.processing_imports", 0
)
completed_imports = _extract_metric_value(
metrics, "marketplace", "marketplace.successful_imports", 0
)
failed_imports = _extract_metric_value(
metrics, "marketplace", "marketplace.failed_imports", 0
)
import_success_rate = _extract_metric_value(
metrics, "marketplace", "marketplace.success_rate", 0
)
return PlatformStatsResponse(
users=UserStatsResponse(**user_stats),
vendors=VendorStatsResponse(
total=vendor_stats.get("total", vendor_stats.get("total_vendors", 0)),
verified=vendor_stats.get(
"verified", vendor_stats.get("verified_vendors", 0)
),
pending=vendor_stats.get("pending", vendor_stats.get("pending_vendors", 0)),
inactive=vendor_stats.get(
"inactive", vendor_stats.get("inactive_vendors", 0)
),
users=UserStatsResponse(
total_users=int(total_users),
active_users=int(active_users),
inactive_users=int(inactive_users),
admin_users=int(admin_users),
activation_rate=float(activation_rate),
),
vendors=VendorStatsResponse(
total=int(total_vendors),
verified=int(verified_vendors),
pending=int(pending_vendors),
inactive=int(inactive_vendors),
),
products=ProductStatsResponse(
total_products=int(total_products),
active_products=int(active_products),
out_of_stock=0, # TODO: Implement
),
orders=OrderStatsBasicResponse(
total_orders=int(total_orders),
pending_orders=0, # TODO: Implement status tracking
completed_orders=0, # TODO: Implement status tracking
),
imports=ImportStatsResponse(
total=int(total_imports),
pending=int(pending_imports),
processing=int(processing_imports),
completed=int(completed_imports),
failed=int(failed_imports),
success_rate=float(import_success_rate),
),
products=ProductStatsResponse(**product_stats),
orders=OrderStatsBasicResponse(**order_stats),
imports=ImportStatsResponse(**import_stats),
)

View File

@@ -4,6 +4,9 @@ Vendor dashboard and statistics endpoints.
Vendor Context: Uses token_vendor_id from JWT token (authenticated vendor API pattern).
The get_current_vendor_api dependency guarantees token_vendor_id is present.
This module uses the StatsAggregator service from core to collect metrics from all
enabled modules. Each module provides its own metrics via the MetricsProvider protocol.
"""
import logging
@@ -13,11 +16,7 @@ from sqlalchemy.orm import Session
from app.api.deps import get_current_vendor_api
from app.core.database import get_db
from app.modules.tenancy.exceptions import VendorNotActiveException
from app.modules.analytics.services.stats_service import stats_service
from app.modules.tenancy.services.vendor_service import vendor_service
from models.schema.auth import UserContext
from app.modules.analytics.schemas import (
from app.modules.core.schemas.dashboard import (
VendorCustomerStats,
VendorDashboardStatsResponse,
VendorInfo,
@@ -25,11 +24,27 @@ from app.modules.analytics.schemas import (
VendorProductStats,
VendorRevenueStats,
)
from app.modules.core.services.stats_aggregator import stats_aggregator
from app.modules.tenancy.exceptions import VendorNotActiveException
from app.modules.tenancy.services.vendor_service import vendor_service
from models.schema.auth import UserContext
vendor_dashboard_router = APIRouter(prefix="/dashboard")
logger = logging.getLogger(__name__)
def _extract_metric_value(
metrics: dict[str, list], category: str, key: str, default: int | float = 0
) -> int | float:
"""Extract a specific metric value from categorized metrics."""
if category not in metrics:
return default
for metric in metrics[category]:
if metric.key == key:
return metric.value
return default
@vendor_dashboard_router.get("/stats", response_model=VendorDashboardStatsResponse)
def get_vendor_dashboard_stats(
request: Request,
@@ -47,6 +62,9 @@ def get_vendor_dashboard_stats(
Vendor is determined from the JWT token (vendor_id claim).
Requires Authorization header (API endpoint).
Statistics are aggregated from all enabled modules via the MetricsProvider protocol.
Each module provides its own metrics, which are combined here for the dashboard.
"""
vendor_id = current_user.token_vendor_id
@@ -56,8 +74,33 @@ def get_vendor_dashboard_stats(
if not vendor.is_active:
raise VendorNotActiveException(vendor.vendor_code)
# Get vendor-scoped statistics
stats_data = stats_service.get_vendor_stats(db=db, vendor_id=vendor_id)
# Get aggregated metrics from all enabled modules
# Get platform_id from request context (set by PlatformContextMiddleware)
platform = getattr(request.state, "platform", None)
platform_id = platform.id if platform else 1
metrics = stats_aggregator.get_vendor_dashboard_stats(
db=db,
vendor_id=vendor_id,
platform_id=platform_id,
)
# Extract metrics from each category
# Product metrics (from catalog module)
total_products = _extract_metric_value(metrics, "catalog", "catalog.total_products", 0)
active_products = _extract_metric_value(metrics, "catalog", "catalog.active_products", 0)
# Order metrics (from orders module)
total_orders = _extract_metric_value(metrics, "orders", "orders.total", 0)
pending_orders = 0 # TODO: Add when status tracking is implemented
completed_orders = 0 # TODO: Add when status tracking is implemented
# Customer metrics (from customers module)
total_customers = _extract_metric_value(metrics, "customers", "customers.total", 0)
active_customers = 0 # TODO: Add when activity tracking is implemented
# Revenue metrics (from orders module)
total_revenue = _extract_metric_value(metrics, "orders", "orders.total_revenue", 0)
revenue_this_month = _extract_metric_value(metrics, "orders", "orders.revenue_period", 0)
return VendorDashboardStatsResponse(
vendor=VendorInfo(
@@ -66,20 +109,20 @@ def get_vendor_dashboard_stats(
vendor_code=vendor.vendor_code,
),
products=VendorProductStats(
total=stats_data.get("total_products", 0),
active=stats_data.get("active_products", 0),
total=int(total_products),
active=int(active_products),
),
orders=VendorOrderStats(
total=stats_data.get("total_orders", 0),
pending=stats_data.get("pending_orders", 0),
completed=stats_data.get("completed_orders", 0),
total=int(total_orders),
pending=int(pending_orders),
completed=int(completed_orders),
),
customers=VendorCustomerStats(
total=stats_data.get("total_customers", 0),
active=stats_data.get("active_customers", 0),
total=int(total_customers),
active=int(active_customers),
),
revenue=VendorRevenueStats(
total=stats_data.get("total_revenue", 0),
this_month=stats_data.get("revenue_this_month", 0),
total=float(total_revenue),
this_month=float(revenue_this_month),
),
)

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@@ -0,0 +1,43 @@
# app/modules/core/schemas/__init__.py
"""
Core module schemas.
"""
from app.modules.core.schemas.dashboard import (
AdminDashboardResponse,
ImportStatsResponse,
MarketplaceStatsResponse,
OrderStatsBasicResponse,
PlatformStatsResponse,
ProductStatsResponse,
StatsResponse,
UserStatsResponse,
VendorCustomerStats,
VendorDashboardStatsResponse,
VendorInfo,
VendorOrderStats,
VendorProductStats,
VendorRevenueStats,
VendorStatsResponse,
)
__all__ = [
# Stats responses
"StatsResponse",
"MarketplaceStatsResponse",
"ImportStatsResponse",
"UserStatsResponse",
"VendorStatsResponse",
"ProductStatsResponse",
"PlatformStatsResponse",
"OrderStatsBasicResponse",
# Admin dashboard
"AdminDashboardResponse",
# Vendor dashboard
"VendorProductStats",
"VendorOrderStats",
"VendorCustomerStats",
"VendorRevenueStats",
"VendorInfo",
"VendorDashboardStatsResponse",
]

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@@ -0,0 +1,244 @@
# app/modules/core/schemas/dashboard.py
"""
Dashboard schemas for core module.
These schemas define the response structures for vendor and admin dashboards.
They're located in core because dashboards are core functionality that should
always be available, regardless of which optional modules are enabled.
The analytics module can extend these with additional functionality (trends,
reports, exports) but the base dashboard schemas live here.
"""
from typing import Any
from pydantic import BaseModel, Field
# ============================================================================
# User Statistics
# ============================================================================
class UserStatsResponse(BaseModel):
"""User statistics response schema.
Used by: Platform statistics endpoints
"""
total_users: int = Field(..., description="Total number of users")
active_users: int = Field(..., description="Number of active users")
inactive_users: int = Field(..., description="Number of inactive users")
admin_users: int = Field(..., description="Number of admin users")
activation_rate: float = Field(..., description="Percentage of active users")
# ============================================================================
# Vendor Statistics (Admin)
# ============================================================================
class VendorStatsResponse(BaseModel):
"""Vendor statistics response schema for admin dashboard.
Used by: GET /api/v1/admin/vendors/stats
"""
total: int = Field(..., description="Total number of vendors")
verified: int = Field(..., description="Number of verified vendors")
pending: int = Field(..., description="Number of pending verification vendors")
inactive: int = Field(..., description="Number of inactive vendors")
# ============================================================================
# Product Statistics
# ============================================================================
class ProductStatsResponse(BaseModel):
"""Product statistics response schema.
Used by: Platform statistics endpoints
"""
total_products: int = Field(0, description="Total number of products")
active_products: int = Field(0, description="Number of active products")
out_of_stock: int = Field(0, description="Number of out-of-stock products")
# ============================================================================
# Order Statistics
# ============================================================================
class OrderStatsBasicResponse(BaseModel):
"""Basic order statistics (stub until Order model is fully implemented).
Used by: Platform statistics endpoints
"""
total_orders: int = Field(0, description="Total number of orders")
pending_orders: int = Field(0, description="Number of pending orders")
completed_orders: int = Field(0, description="Number of completed orders")
# ============================================================================
# Import Statistics
# ============================================================================
class ImportStatsResponse(BaseModel):
"""Import job statistics response schema.
Used by: GET /api/v1/admin/marketplace-import-jobs/stats
"""
total: int = Field(..., description="Total number of import jobs")
pending: int = Field(..., description="Jobs waiting to start")
processing: int = Field(..., description="Jobs currently running")
completed: int = Field(..., description="Successfully completed jobs")
failed: int = Field(..., description="Failed jobs")
success_rate: float = Field(..., description="Percentage of successful imports")
# ============================================================================
# Comprehensive Stats
# ============================================================================
class StatsResponse(BaseModel):
"""Comprehensive platform statistics response schema."""
total_products: int
unique_brands: int
unique_categories: int
unique_marketplaces: int = 0
unique_vendors: int = 0
total_inventory_entries: int = 0
total_inventory_quantity: int = 0
class MarketplaceStatsResponse(BaseModel):
"""Statistics per marketplace response schema."""
marketplace: str
total_products: int
unique_vendors: int
unique_brands: int
# ============================================================================
# Platform Statistics (Combined)
# ============================================================================
class PlatformStatsResponse(BaseModel):
"""Combined platform statistics response schema.
Used by: GET /api/v1/admin/dashboard/stats/platform
"""
users: UserStatsResponse
vendors: VendorStatsResponse
products: ProductStatsResponse
orders: OrderStatsBasicResponse
imports: ImportStatsResponse
# ============================================================================
# Admin Dashboard Response
# ============================================================================
class AdminDashboardResponse(BaseModel):
"""Admin dashboard response schema.
Used by: GET /api/v1/admin/dashboard
"""
platform: dict[str, Any] = Field(..., description="Platform information")
users: UserStatsResponse
vendors: VendorStatsResponse
recent_vendors: list[dict[str, Any]] = Field(
default_factory=list, description="Recent vendors"
)
recent_imports: list[dict[str, Any]] = Field(
default_factory=list, description="Recent import jobs"
)
# ============================================================================
# Vendor Dashboard Statistics
# ============================================================================
class VendorProductStats(BaseModel):
"""Vendor product statistics."""
total: int = Field(0, description="Total products in catalog")
active: int = Field(0, description="Active products")
class VendorOrderStats(BaseModel):
"""Vendor order statistics."""
total: int = Field(0, description="Total orders")
pending: int = Field(0, description="Pending orders")
completed: int = Field(0, description="Completed orders")
class VendorCustomerStats(BaseModel):
"""Vendor customer statistics."""
total: int = Field(0, description="Total customers")
active: int = Field(0, description="Active customers")
class VendorRevenueStats(BaseModel):
"""Vendor revenue statistics."""
total: float = Field(0, description="Total revenue")
this_month: float = Field(0, description="Revenue this month")
class VendorInfo(BaseModel):
"""Vendor basic info for dashboard."""
id: int
name: str
vendor_code: str
class VendorDashboardStatsResponse(BaseModel):
"""Vendor dashboard statistics response schema.
Used by: GET /api/v1/vendor/dashboard/stats
"""
vendor: VendorInfo
products: VendorProductStats
orders: VendorOrderStats
customers: VendorCustomerStats
revenue: VendorRevenueStats
__all__ = [
# Stats responses
"StatsResponse",
"MarketplaceStatsResponse",
"ImportStatsResponse",
"UserStatsResponse",
"VendorStatsResponse",
"ProductStatsResponse",
"PlatformStatsResponse",
"OrderStatsBasicResponse",
# Admin dashboard
"AdminDashboardResponse",
# Vendor dashboard
"VendorProductStats",
"VendorOrderStats",
"VendorCustomerStats",
"VendorRevenueStats",
"VendorInfo",
"VendorDashboardStatsResponse",
]

View File

@@ -28,6 +28,10 @@ from app.modules.core.services.platform_settings_service import (
PlatformSettingsService,
platform_settings_service,
)
from app.modules.core.services.stats_aggregator import (
StatsAggregatorService,
stats_aggregator,
)
from app.modules.core.services.storage_service import (
LocalStorageBackend,
R2StorageBackend,
@@ -64,4 +68,7 @@ __all__ = [
# Platform settings
"PlatformSettingsService",
"platform_settings_service",
# Stats aggregator
"StatsAggregatorService",
"stats_aggregator",
]

View File

@@ -0,0 +1,253 @@
# app/modules/core/services/stats_aggregator.py
"""
Stats aggregator service for collecting metrics from all modules.
This service lives in core because dashboards are core functionality that should
always be available. It discovers and aggregates MetricsProviders from all enabled
modules, providing a unified interface for dashboard statistics.
Benefits:
- Dashboards always work (aggregator is in core)
- Each module owns its metrics (no cross-module coupling)
- Optional modules are truly optional (can be removed without breaking app)
- Easy to add new metrics (just implement MetricsProviderProtocol in your module)
Usage:
from app.modules.core.services.stats_aggregator import stats_aggregator
# Get vendor dashboard stats
stats = stats_aggregator.get_vendor_dashboard_stats(
db=db, vendor_id=123, platform_id=1
)
# Get admin dashboard stats
stats = stats_aggregator.get_admin_dashboard_stats(
db=db, platform_id=1
)
"""
import logging
from typing import TYPE_CHECKING, Any
from sqlalchemy.orm import Session
from app.modules.contracts.metrics import (
MetricValue,
MetricsContext,
MetricsProviderProtocol,
)
if TYPE_CHECKING:
from app.modules.base import ModuleDefinition
logger = logging.getLogger(__name__)
class StatsAggregatorService:
"""
Aggregates metrics from all module providers.
This service discovers MetricsProviders from enabled modules and provides
a unified interface for dashboard statistics. It handles graceful degradation
when modules are disabled or providers fail.
"""
def _get_enabled_providers(
self, db: Session, platform_id: int
) -> list[tuple["ModuleDefinition", MetricsProviderProtocol]]:
"""
Get metrics providers from enabled modules.
Args:
db: Database session
platform_id: Platform ID to check module enablement
Returns:
List of (module, provider) tuples for enabled modules with providers
"""
from app.modules.registry import MODULES
from app.modules.service import module_service
providers: list[tuple[ModuleDefinition, MetricsProviderProtocol]] = []
for module in MODULES.values():
# Skip modules without metrics providers
if not module.has_metrics_provider():
continue
# Core modules are always enabled, check others
if not module.is_core:
try:
if not module_service.is_module_enabled(db, platform_id, module.code):
continue
except Exception as e:
logger.warning(
f"Failed to check if module {module.code} is enabled: {e}"
)
continue
# Get the provider instance
try:
provider = module.get_metrics_provider_instance()
if provider is not None:
providers.append((module, provider))
except Exception as e:
logger.warning(
f"Failed to get metrics provider for module {module.code}: {e}"
)
return providers
def get_vendor_dashboard_stats(
self,
db: Session,
vendor_id: int,
platform_id: int,
context: MetricsContext | None = None,
) -> dict[str, list[MetricValue]]:
"""
Get all metrics for a vendor, grouped by category.
Called by the vendor dashboard to display vendor-scoped statistics.
Args:
db: Database session
vendor_id: ID of the vendor to get metrics for
platform_id: Platform ID (for module enablement check)
context: Optional filtering/scoping context
Returns:
Dict mapping category name to list of MetricValue objects
"""
providers = self._get_enabled_providers(db, platform_id)
result: dict[str, list[MetricValue]] = {}
for module, provider in providers:
try:
metrics = provider.get_vendor_metrics(db, vendor_id, context)
if metrics:
result[provider.metrics_category] = metrics
except Exception as e:
logger.warning(
f"Failed to get vendor metrics from module {module.code}: {e}"
)
# Continue with other providers - graceful degradation
return result
def get_admin_dashboard_stats(
self,
db: Session,
platform_id: int,
context: MetricsContext | None = None,
) -> dict[str, list[MetricValue]]:
"""
Get all metrics for a platform, grouped by category.
Called by the admin dashboard to display platform-wide statistics.
Args:
db: Database session
platform_id: ID of the platform to get metrics for
context: Optional filtering/scoping context
Returns:
Dict mapping category name to list of MetricValue objects
"""
providers = self._get_enabled_providers(db, platform_id)
result: dict[str, list[MetricValue]] = {}
for module, provider in providers:
try:
metrics = provider.get_platform_metrics(db, platform_id, context)
if metrics:
result[provider.metrics_category] = metrics
except Exception as e:
logger.warning(
f"Failed to get platform metrics from module {module.code}: {e}"
)
# Continue with other providers - graceful degradation
return result
def get_vendor_stats_flat(
self,
db: Session,
vendor_id: int,
platform_id: int,
context: MetricsContext | None = None,
) -> dict[str, Any]:
"""
Get vendor metrics as a flat dictionary.
This is a convenience method that flattens the category-grouped metrics
into a single dictionary with metric keys as keys. Useful for backward
compatibility with existing dashboard code.
Args:
db: Database session
vendor_id: ID of the vendor to get metrics for
platform_id: Platform ID (for module enablement check)
context: Optional filtering/scoping context
Returns:
Flat dict mapping metric keys to values
"""
categorized = self.get_vendor_dashboard_stats(db, vendor_id, platform_id, context)
return self._flatten_metrics(categorized)
def get_admin_stats_flat(
self,
db: Session,
platform_id: int,
context: MetricsContext | None = None,
) -> dict[str, Any]:
"""
Get platform metrics as a flat dictionary.
This is a convenience method that flattens the category-grouped metrics
into a single dictionary with metric keys as keys. Useful for backward
compatibility with existing dashboard code.
Args:
db: Database session
platform_id: Platform ID
context: Optional filtering/scoping context
Returns:
Flat dict mapping metric keys to values
"""
categorized = self.get_admin_dashboard_stats(db, platform_id, context)
return self._flatten_metrics(categorized)
def _flatten_metrics(
self, categorized: dict[str, list[MetricValue]]
) -> dict[str, Any]:
"""Flatten categorized metrics into a single dictionary."""
flat: dict[str, Any] = {}
for metrics in categorized.values():
for metric in metrics:
flat[metric.key] = metric.value
return flat
def get_available_categories(
self, db: Session, platform_id: int
) -> list[str]:
"""
Get list of available metric categories for a platform.
Args:
db: Database session
platform_id: Platform ID (for module enablement check)
Returns:
List of category names from enabled providers
"""
providers = self._get_enabled_providers(db, platform_id)
return [provider.metrics_category for _, provider in providers]
# Singleton instance
stats_aggregator = StatsAggregatorService()
__all__ = ["StatsAggregatorService", "stats_aggregator"]