refactor(monitoring): remove django-prometheus integration

Replaced `django-prometheus` with the default Django components, including model mixins, database backends, and cache configuration. This change simplifies monitoring setup by removing unnecessary dependencies, reducing overhead, and improving compatibility.

**Details:**
- Removed Prometheus metrics endpoints and middleware.
- Updated database, cache, and model configurations to remove `django-prometheus`.
- Adjusted WSGI settings to integrate OpenTelemetry instrumentation instead of Prometheus.
- Updated dependency files and migration schemas accordingly.

engine/core/migrations/0024_categorytag_category_tags.py

@@ -1,7 +1,6 @@
 import uuid
 
 import django_extensions.db.fields
-import django_prometheus.models
 from django.db import migrations, models
 
 
@@ -251,10 +250,7 @@ class Migration(migrations.Migration):
                 "verbose_name": "category tag",
                 "verbose_name_plural": "category tags",
             },
-            bases=(
+            bases=(models.Model,),
-                django_prometheus.models.ExportModelOperationsMixin("category_tag"),
-                models.Model,
-            ),
         ),
         migrations.AddField(
             model_name="category",

engine/core/migrations/0040_customerrelationshipmanagementprovider_ordercrmlink.py

@@ -2,7 +2,6 @@ import uuid
 
 import django.db.models.deletion
 import django_extensions.db.fields
-import django_prometheus.models
 from django.db import migrations, models
 
 
@@ -80,10 +79,7 @@ class Migration(migrations.Migration):
                 "verbose_name": "order CRM link",
                 "verbose_name_plural": "orders CRM links",
             },
-            bases=(
+            bases=(models.Model,),
-                django_prometheus.models.ExportModelOperationsMixin("crm_provider"),
-                models.Model,
-            ),
         ),
         migrations.CreateModel(
             name="OrderCrmLink",
@@ -148,9 +144,6 @@ class Migration(migrations.Migration):
                 "verbose_name": "order CRM link",
                 "verbose_name_plural": "orders CRM links",
             },
-            bases=(
+            bases=(models.Model,),
-                django_prometheus.models.ExportModelOperationsMixin("order_crm_link"),
-                models.Model,
-            ),
         ),
     ]

engine/core/models.py

@@ -46,7 +46,6 @@ from django.utils.functional import cached_property
 from django.utils.http import urlsafe_base64_encode
 from django.utils.translation import gettext_lazy as _
 from django_extensions.db.fields import AutoSlugField
-from django_prometheus.models import ExportModelOperationsMixin
 from mptt.fields import TreeForeignKey
 from mptt.models import MPTTModel
 
@@ -76,7 +75,7 @@ from schon.utils.misc import create_object
 logger = logging.getLogger(__name__)
 
 
-class AttributeGroup(ExportModelOperationsMixin("attribute_group"), NiceModel):
+class AttributeGroup(NiceModel):
     __doc__ = _(
         "Represents a group of attributes, which can be hierarchical."
         " This class is used to manage and organize attribute groups."
@@ -109,7 +108,7 @@ class AttributeGroup(ExportModelOperationsMixin("attribute_group"), NiceModel):
         verbose_name_plural = _("attribute groups")
 
 
-class Vendor(ExportModelOperationsMixin("vendor"), NiceModel):
+class Vendor(NiceModel):
     __doc__ = _(
         "Represents a vendor entity capable of storing information about external vendors and their interaction requirements."
         " The Vendor class is used to define and manage information related to an external vendor."
@@ -193,7 +192,7 @@ class Vendor(ExportModelOperationsMixin("vendor"), NiceModel):
         ]
 
 
-class ProductTag(ExportModelOperationsMixin("product_tag"), NiceModel):
+class ProductTag(NiceModel):
     __doc__ = _(
         "Represents a product tag used for classifying or identifying products."
         " The ProductTag class is designed to uniquely identify and classify products through a combination"
@@ -225,7 +224,7 @@ class ProductTag(ExportModelOperationsMixin("product_tag"), NiceModel):
         verbose_name_plural = _("product tags")
 
 
-class CategoryTag(ExportModelOperationsMixin("category_tag"), NiceModel):
+class CategoryTag(NiceModel):
     __doc__ = _(
         "Represents a category tag used for products."
         " This class models a category tag that can be used to associate and classify products."
@@ -256,7 +255,7 @@ class CategoryTag(ExportModelOperationsMixin("category_tag"), NiceModel):
         verbose_name_plural = _("category tags")
 
 
-class Category(ExportModelOperationsMixin("category"), NiceModel, MPTTModel):
+class Category(NiceModel, MPTTModel):
     __doc__ = _(
         "Represents a category entity to organize and group related items in a hierarchical structure."
         " Categories may have hierarchical relationships with other categories, supporting parent-child relationships."
@@ -457,7 +456,7 @@ class Category(ExportModelOperationsMixin("category"), NiceModel, MPTTModel):
         ordering = ["tree_id", "lft"]
 
 
-class Brand(ExportModelOperationsMixin("brand"), NiceModel):
+class Brand(NiceModel):
     __doc__ = _(
         "Represents a Brand object in the system. "
         "This class handles information and attributes related to a brand, including its name, logos, "
@@ -527,7 +526,7 @@ class Brand(ExportModelOperationsMixin("brand"), NiceModel):
         verbose_name_plural = _("brands")
 
 
-class Stock(ExportModelOperationsMixin("stock"), NiceModel):
+class Stock(NiceModel):
     __doc__ = _(
         "Represents the stock of a product managed in the system."
         " This class provides details about the relationship between vendors, products, and their stock information, "
@@ -595,7 +594,7 @@ class Stock(ExportModelOperationsMixin("stock"), NiceModel):
         verbose_name_plural = _("stock entries")
 
 
-class Product(ExportModelOperationsMixin("product"), NiceModel):
+class Product(NiceModel):
     __doc__ = _(
         "Represents a product with attributes such as category, brand, tags, digital status, name, description, part number, and slug."
         " Provides related utility properties to retrieve ratings, feedback counts, price, quantity, and total orders."
@@ -767,7 +766,7 @@ class Product(ExportModelOperationsMixin("product"), NiceModel):
         return self.images.exists()
 
 
-class Attribute(ExportModelOperationsMixin("attribute"), NiceModel):
+class Attribute(NiceModel):
     __doc__ = _(
         "Represents an attribute in the system."
         " This class is used to define and manage attributes,"
@@ -826,7 +825,7 @@ class Attribute(ExportModelOperationsMixin("attribute"), NiceModel):
         verbose_name_plural = _("attributes")
 
 
-class AttributeValue(ExportModelOperationsMixin("attribute_value"), NiceModel):
+class AttributeValue(NiceModel):
     __doc__ = _(
         "Represents a specific value for an attribute that is linked to a product. "
         "It links the 'attribute' to a unique 'value', allowing "
@@ -866,7 +865,7 @@ class AttributeValue(ExportModelOperationsMixin("attribute_value"), NiceModel):
         verbose_name_plural = _("attribute values")
 
 
-class ProductImage(ExportModelOperationsMixin("product_image"), NiceModel):
+class ProductImage(NiceModel):
     __doc__ = _(
         "Represents a product image associated with a product in the system. "
         "This class is designed to manage images for products, including functionality "
@@ -920,7 +919,7 @@ class ProductImage(ExportModelOperationsMixin("product_image"), NiceModel):
         verbose_name_plural = _("product images")
 
 
-class Promotion(ExportModelOperationsMixin("promotion"), NiceModel):
+class Promotion(NiceModel):
     __doc__ = _(
         "Represents a promotional campaign for products with a discount. "
         "This class is used to define and manage promotional campaigns that offer a "
@@ -966,7 +965,7 @@ class Promotion(ExportModelOperationsMixin("promotion"), NiceModel):
         return str(self.id)
 
 
-class Wishlist(ExportModelOperationsMixin("wishlist"), NiceModel):
+class Wishlist(NiceModel):
     __doc__ = _(
         "Represents a user's wishlist for storing and managing desired products. "
         "The class provides functionality to manage a collection of products, "
@@ -1037,7 +1036,7 @@ class Wishlist(ExportModelOperationsMixin("wishlist"), NiceModel):
         return self
 
 
-class Documentary(ExportModelOperationsMixin("attribute_group"), NiceModel):
+class Documentary(NiceModel):
     __doc__ = _(
         "Represents a documentary record tied to a product. "
         "This class is used to store information about documentaries related to specific "
@@ -1068,7 +1067,7 @@ class Documentary(ExportModelOperationsMixin("attribute_group"), NiceModel):
         return self.document.name.split(".")[-1] or _("unresolved")
 
 
-class Address(ExportModelOperationsMixin("address"), NiceModel):
+class Address(NiceModel):
     __doc__ = _(
         "Represents an address entity that includes location details and associations with a user. "
         "Provides functionality for geographic and address data storage, as well "
@@ -1133,7 +1132,7 @@ class Address(ExportModelOperationsMixin("address"), NiceModel):
         return f"{base} for {self.user.email}" if self.user else base
 
 
-class PromoCode(ExportModelOperationsMixin("promocode"), NiceModel):
+class PromoCode(NiceModel):
     __doc__ = _(
         "Represents a promotional code that can be used for discounts, managing its validity, "
         "type of discount, and application. "
@@ -1264,7 +1263,7 @@ class PromoCode(ExportModelOperationsMixin("promocode"), NiceModel):
         return promo_amount
 
 
-class Order(ExportModelOperationsMixin("order"), NiceModel):
+class Order(NiceModel):
     __doc__ = _(
         "Represents an order placed by a user."
         " This class models an order within the application,"
@@ -1834,7 +1833,7 @@ class Order(ExportModelOperationsMixin("order"), NiceModel):
         return None
 
 
-class Feedback(ExportModelOperationsMixin("feedback"), NiceModel):
+class Feedback(NiceModel):
     __doc__ = _(
         "Manages user feedback for products. "
         "This class is designed to capture and store user feedback for specific products "
@@ -1883,7 +1882,7 @@ class Feedback(ExportModelOperationsMixin("feedback"), NiceModel):
         verbose_name_plural = _("feedbacks")
 
 
-class OrderProduct(ExportModelOperationsMixin("order_product"), NiceModel):
+class OrderProduct(NiceModel):
     __doc__ = _(
         "Represents products associated with orders and their attributes. "
         "The OrderProduct model maintains information about a product that is part of an order, "
@@ -2046,9 +2045,7 @@ class OrderProduct(ExportModelOperationsMixin("order_product"), NiceModel):
         return None
 
 
-class CustomerRelationshipManagementProvider(
+class CustomerRelationshipManagementProvider(NiceModel):
-    ExportModelOperationsMixin("crm_provider"), NiceModel
-):
     name = CharField(max_length=128, unique=True, verbose_name=_("name"))
     integration_url = URLField(
         blank=True, null=True, help_text=_("URL of the integration")
@@ -2091,7 +2088,7 @@ class CustomerRelationshipManagementProvider(
         verbose_name_plural = _("CRMs")
 
 
-class OrderCrmLink(ExportModelOperationsMixin("order_crm_link"), NiceModel):
+class OrderCrmLink(NiceModel):
     order = ForeignKey(to=Order, on_delete=PROTECT, related_name="crm_links")
     crm = ForeignKey(
         to=CustomerRelationshipManagementProvider,
@@ -2108,7 +2105,7 @@ class OrderCrmLink(ExportModelOperationsMixin("order_crm_link"), NiceModel):
         verbose_name_plural = _("orders CRM links")
 
 
-class DigitalAssetDownload(ExportModelOperationsMixin("attribute_group"), NiceModel):
+class DigitalAssetDownload(NiceModel):
     __doc__ = _(
         "Represents the downloading functionality for digital assets associated with orders. "
         "The DigitalAssetDownload class provides the ability to manage and access "

monitoring/prometheus.yml

@@ -3,16 +3,6 @@ global:
   evaluation_interval: 15s
 
 scrape_configs:
-  - job_name: 'app'
-    metrics_path: /prometheus/metrics
-    scheme: http
-    static_configs:
-      - targets: [ 'app:8000' ]
-
-  - job_name: 'worker'
-    static_configs:
-      - targets: [ 'worker:8888' ]
-
   - job_name: 'database'
     static_configs:
       - targets: [ 'database_exporter:9187' ]

pyproject.toml

@@ -29,7 +29,6 @@ dependencies = [
     "django-md-field==0.1.0",
     "django-modeltranslation==0.19.19",
     "django-mptt==0.18.0",
-    "django-prometheus==2.4.1",
     "django-redis==6.0.0",
     "django-ratelimit==4.1.0",
     "django-storages==1.14.6",

schon/settings/base.py

@@ -108,7 +108,6 @@ UNSAFE_CACHE_KEYS: list[str] = []
 SITE_ID: int = 1
 
 INSTALLED_APPS: list[str] = [
-    "django_prometheus",
     "unfold",
     "unfold.contrib.filters",
     "unfold.contrib.forms",
@@ -164,7 +163,6 @@ if DEBUG:
 MIDDLEWARE: list[str] = [
     "schon.middleware.BlockInvalidHostMiddleware",
     "schon.middleware.RateLimitMiddleware",
-    "django_prometheus.middleware.PrometheusBeforeMiddleware",
     "django.middleware.security.SecurityMiddleware",
     "whitenoise.middleware.WhiteNoiseMiddleware",
     "django.contrib.sessions.middleware.SessionMiddleware",
@@ -177,7 +175,6 @@ MIDDLEWARE: list[str] = [
     "django.middleware.clickjacking.XFrameOptionsMiddleware",
     "schon.middleware.CustomLocaleMiddleware",
     "schon.middleware.CamelCaseMiddleWare",
-    "django_prometheus.middleware.PrometheusAfterMiddleware",
 ]
 
 if DEBUG:

schon/settings/caches.py

@@ -5,7 +5,7 @@ from schon.settings.base import REDIS_PASSWORD
 
 CACHES = {
     "default": {
-        "BACKEND": "django_prometheus.cache.backends.redis.RedisCache",
+        "BACKEND": "django_redis.cache.RedisCache",
         "LOCATION": getenv(
             "CELERY_BROKER_URL", f"redis://:{REDIS_PASSWORD}@redis:6379/0"
         ),

schon/settings/database.py

@@ -2,7 +2,7 @@ from os import getenv
 
 DATABASES = {
     "default": {
-        "ENGINE": "django_prometheus.db.backends.postgis",
+        "ENGINE": "django.contrib.gis.db.backends.postgis",
         "NAME": getenv("POSTGRES_DB"),
         "USER": getenv("POSTGRES_USER"),
         "PASSWORD": getenv("POSTGRES_PASSWORD"),

schon/settings/drf.py

@@ -88,7 +88,6 @@ The API supports multiple response formats:
 
 ## Health & Monitoring
 - Health checks: `/health/`
-- Prometheus metrics: `/prometheus/metrics/`
 
 ## Version
 Current API version: {version}

schon/urls.py

@@ -46,12 +46,6 @@ urlpatterns = [
         ),
         name="health_check",
     ),
-    path(
-        r"prometheus/",
-        include(
-            "django_prometheus.urls",
-        ),
-    ),
     path(
         r"i18n/setlang/",
         set_language,

schon/wsgi.py

@@ -10,7 +10,10 @@ https://docs.djangoproject.com/en/5.0/howto/deployment/wsgi/
 import os
 
 from django.core.wsgi import get_wsgi_application
+from opentelemetry.instrumentation.django import DjangoInstrumentor
 
 os.environ.setdefault("DJANGO_SETTINGS_MODULE", "schon.settings")
 
+DjangoInstrumentor().instrument()
+
 application = get_wsgi_application()

uv.lock

@@ -980,19 +980,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/51/9e/78aad58a90f2e4d0c898eeadd2f2b720bcae29b43676dd37c2b627c4c6c6/django_mptt-0.18.0-py3-none-any.whl", hash = "sha256:bfa3f01627e3966a1df901aeca74570a3e933e66809ebf58d9df673e63627afb", size = 120157, upload-time = "2025-08-26T09:27:02.168Z" },
 ]
 
-[[package]]
-name = "django-prometheus"
-version = "2.4.1"
-source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "django" },
-    { name = "prometheus-client" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/98/f4/cb39ddd2a41e07a274c4e162c076e906ae232d63b66bbabdea0300878877/django_prometheus-2.4.1.tar.gz", hash = "sha256:073628243d2a6de6a8a8c20e5b512872dfb85d66e1b60b28bcf1eca0155dad95", size = 24464, upload-time = "2025-06-25T15:45:37.149Z" }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/01/50/9c5e022fa92574e5d20606687f15a2aa255e10512a17d11a8216fa117f72/django_prometheus-2.4.1-py2.py3-none-any.whl", hash = "sha256:7fe5af7f7c9ad9cd8a429fe0f3f1bf651f0e244f77162147869eab7ec09cc5e7", size = 29541, upload-time = "2025-06-25T15:45:35.433Z" },
-]
-
 [[package]]
 name = "django-ratelimit"
 version = "4.1.0"
@@ -3360,7 +3347,6 @@ dependencies = [
     { name = "django-model-utils" },
     { name = "django-modeltranslation" },
     { name = "django-mptt" },
-    { name = "django-prometheus" },
     { name = "django-ratelimit" },
     { name = "django-redis" },
     { name = "django-storages" },
@@ -3461,7 +3447,6 @@ requires-dist = [
     { name = "django-model-utils", specifier = "==5.0.0" },
     { name = "django-modeltranslation", specifier = "==0.19.19" },
     { name = "django-mptt", specifier = "==0.18.0" },
-    { name = "django-prometheus", specifier = "==2.4.1" },
     { name = "django-ratelimit", specifier = "==4.1.0" },
     { name = "django-redis", specifier = "==6.0.0" },
     { name = "django-storages", specifier = "==1.14.6" },