Drop django 1.x support

CHANGELOG.md

@@ -73,6 +73,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `opentelemetry-instrumentation-system-metrics`: Use proper numeric `cpython.gc.generation` attribute in CPython metrics, out of spec `generation` attribute is deprecated and will be removed in the future
   ([#4092](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4092))
 
+### Breaking changes
+
+- `opentelemetry-instrumentation-django`: Drop support for Django < 2.0
+  ([#3848](https://github.com/open-telemetry/opentelemetry-python-contrib/pull/4083))
+
 ## Version 1.39.0/0.60b0 (2025-12-03)
 
 ### Added

instrumentation/README.md

@@ -19,7 +19,7 @@
 | [opentelemetry-instrumentation-click](./opentelemetry-instrumentation-click) | click >= 8.1.3, < 9.0.0 | No | development
 | [opentelemetry-instrumentation-confluent-kafka](./opentelemetry-instrumentation-confluent-kafka) | confluent-kafka >= 1.8.2, <= 2.11.0 | No | development
 | [opentelemetry-instrumentation-dbapi](./opentelemetry-instrumentation-dbapi) | dbapi | No | development
-| [opentelemetry-instrumentation-django](./opentelemetry-instrumentation-django) | django >= 1.10 | Yes | development
+| [opentelemetry-instrumentation-django](./opentelemetry-instrumentation-django) | django >= 2.0 | Yes | development
 | [opentelemetry-instrumentation-elasticsearch](./opentelemetry-instrumentation-elasticsearch) | elasticsearch >= 6.0 | No | development
 | [opentelemetry-instrumentation-falcon](./opentelemetry-instrumentation-falcon) | falcon >= 1.4.1, < 5.0.0 | Yes | migration
 | [opentelemetry-instrumentation-fastapi](./opentelemetry-instrumentation-fastapi) | fastapi ~= 0.92 | Yes | migration

instrumentation/opentelemetry-instrumentation-django/pyproject.toml

@@ -37,7 +37,7 @@ asgi = [
   "opentelemetry-instrumentation-asgi == 0.61b0.dev",
 ]
 instruments = [
-  "django >= 1.10",
+  "django >= 2.0",
 ]
 
 [project.entry-points.opentelemetry_instrumentor]

instrumentation/opentelemetry-instrumentation-django/src/opentelemetry/instrumentation/django/__init__.py

@@ -303,7 +303,6 @@ def response_hook(span, request, response):
 from os import environ
 from typing import Collection
 
-from django import VERSION as django_version
 from django.conf import settings
 from django.core.exceptions import ImproperlyConfigured
 
@@ -335,21 +334,11 @@ def response_hook(span, request, response):
 from opentelemetry.trace import get_tracer
 from opentelemetry.util.http import get_excluded_urls, parse_excluded_urls
 
-DJANGO_2_0 = django_version >= (2, 0)
-
 _excluded_urls_from_env = get_excluded_urls("DJANGO")
+_django_middleware_setting = "MIDDLEWARE"
 _logger = getLogger(__name__)
 
 
-def _get_django_middleware_setting() -> str:
-    # In Django versions 1.x, setting MIDDLEWARE_CLASSES can be used as a legacy
-    # alternative to MIDDLEWARE. This is the case when `settings.MIDDLEWARE` has
-    # its default value (`None`).
-    if not DJANGO_2_0 and getattr(settings, "MIDDLEWARE", None) is None:
-        return "MIDDLEWARE_CLASSES"
-    return "MIDDLEWARE"
-
-
 def _get_django_otel_middleware_position(
     middleware_length, default_middleware_position=0
 ):
@@ -452,24 +441,29 @@ def _instrument(self, **kwargs):
         # https://docs.djangoproject.com/en/3.0/topics/http/middleware/#activating-middleware
         # https://docs.djangoproject.com/en/3.0/ref/middleware/#middleware-ordering
 
-        _middleware_setting = _get_django_middleware_setting()
         settings_middleware = []
         try:
-            settings_middleware = getattr(settings, _middleware_setting, [])
+            settings_middleware = getattr(
+                settings, _django_middleware_setting, []
+            )
         except ImproperlyConfigured as exception:
             _logger.debug(
                 "DJANGO_SETTINGS_MODULE environment variable not configured. Defaulting to empty settings: %s",
                 exception,
             )
             settings.configure()
-            settings_middleware = getattr(settings, _middleware_setting, [])
+            settings_middleware = getattr(
+                settings, _django_middleware_setting, []
+            )
         except ModuleNotFoundError as exception:
             _logger.debug(
                 "DJANGO_SETTINGS_MODULE points to a non-existent module. Defaulting to empty settings: %s",
                 exception,
             )
             settings.configure()
-            settings_middleware = getattr(settings, _middleware_setting, [])
+            settings_middleware = getattr(
+                settings, _django_middleware_setting, []
+            )
 
         # Django allows to specify middlewares as a tuple, so we convert this tuple to a
         # list, otherwise we wouldn't be able to call append/remove
@@ -491,11 +485,12 @@ def _instrument(self, **kwargs):
             middleware_position, self._opentelemetry_middleware
         )
 
-        setattr(settings, _middleware_setting, settings_middleware)
+        setattr(settings, _django_middleware_setting, settings_middleware)
 
     def _uninstrument(self, **kwargs):
-        _middleware_setting = _get_django_middleware_setting()
-        settings_middleware = getattr(settings, _middleware_setting, None)
+        settings_middleware = getattr(
+            settings, _django_middleware_setting, None
+        )
 
         # FIXME This is starting to smell like trouble. We have 2 mechanisms
         # that may make this condition be True, one implemented in
@@ -508,4 +503,4 @@ def _uninstrument(self, **kwargs):
             return
 
         settings_middleware.remove(self._opentelemetry_middleware)
-        setattr(settings, _middleware_setting, settings_middleware)
+        setattr(settings, _django_middleware_setting, settings_middleware)

instrumentation/opentelemetry-instrumentation-django/src/opentelemetry/instrumentation/django/middleware/otel_middleware.py

@@ -79,30 +79,8 @@
 except ImportError:
     from django.urls import Resolver404, resolve
 
-DJANGO_2_0 = django_version >= (2, 0)
 DJANGO_3_0 = django_version >= (3, 0)
 
-if DJANGO_2_0:
-    # Since Django 2.0, only `settings.MIDDLEWARE` is supported, so new-style
-    # middlewares can be used.
-    class MiddlewareMixin:
-        def __init__(self, get_response):
-            self.get_response = get_response
-
-        def __call__(self, request):
-            self.process_request(request)
-            response = self.get_response(request)
-            return self.process_response(request, response)
-
-else:
-    # Django versions 1.x can use `settings.MIDDLEWARE_CLASSES` and expect
-    # old-style middlewares, which are created by inheriting from
-    # `deprecation.MiddlewareMixin` since its creation in Django 1.10 and 1.11,
-    # or from `object` for older versions.
-    try:
-        from django.utils.deprecation import MiddlewareMixin
-    except ImportError:
-        MiddlewareMixin = object
 
 if DJANGO_3_0:
     from django.core.handlers.asgi import ASGIRequest
@@ -137,7 +115,7 @@ def _is_asgi_request(request: HttpRequest) -> bool:
     return ASGIRequest is not None and isinstance(request, ASGIRequest)
 
 
-class _DjangoMiddleware(MiddlewareMixin):
+class _DjangoMiddleware:
     """Django Middleware for OpenTelemetry"""
 
     _environ_activation_key = (
@@ -167,6 +145,14 @@ class _DjangoMiddleware(MiddlewareMixin):
         None
     )
 
+    def __init__(self, get_response):
+        self.get_response = get_response
+
+    def __call__(self, request):
+        self.process_request(request)
+        response = self.get_response(request)
+        return self.process_response(request, response)
+
     @staticmethod
     def _get_span_name(request):
         method = sanitize_method(request.method.strip())

instrumentation/opentelemetry-instrumentation-django/src/opentelemetry/instrumentation/django/package.py

@@ -13,5 +13,5 @@
 # limitations under the License.
 
 
-_instruments = ("django >= 1.10",)
+_instruments = ("django >= 2.0",)
 _supports_metrics = True

opentelemetry-instrumentation/src/opentelemetry/instrumentation/bootstrap_gen.py

@@ -89,7 +89,7 @@
         "instrumentation": "opentelemetry-instrumentation-confluent-kafka==0.61b0.dev",
     },
     {
-        "library": "django >= 1.10",
+        "library": "django >= 2.0",
         "instrumentation": "opentelemetry-instrumentation-django==0.61b0.dev",
     },
     {