Refactored Django otel position to a separate function

Author: saichander17

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

@@ -285,6 +285,30 @@ def _get_django_middleware_setting() -> str:
     return "MIDDLEWARE"
 
 
+def _get_django_otel_middleware_position(
+    middleware_length, default_middleware_position=0
+):
+    otel_position = environ.get("OTEL_PYTHON_DJANGO_MIDDLEWARE_POSITION")
+    try:
+        middleware_position = int(otel_position)
+    except (ValueError, TypeError):
+        _logger.debug(
+            "Invalid OTEL_PYTHON_DJANGO_MIDDLEWARE_POSITION value: (%s). Using default position: %d.",
+            otel_position,
+            default_middleware_position,
+        )
+        middleware_position = default_middleware_position
+
+    if middleware_position < 0 or middleware_position > middleware_length:
+        _logger.debug(
+            "Middleware position %d is out of range (0-%d). Using 0 as the position",
+            middleware_position,
+            middleware_length,
+        )
+        middleware_position = 0
+    return middleware_position
+
+
 class DjangoInstrumentor(BaseInstrumentor):
     """An instrumentor for Django
 
@@ -388,24 +412,9 @@ def _instrument(self, **kwargs):
 
         is_sql_commentor_enabled = kwargs.pop("is_sql_commentor_enabled", None)
 
-        otel_position = environ.get("OTEL_PYTHON_DJANGO_MIDDLEWARE_POSITION")
-        try:
-            middleware_position = int(otel_position)
-        except (ValueError, TypeError):
-            _logger.debug(
-                "The middleware_position you provided (%s) is not an integer. Defaulting to 0.",
-                otel_position,
-            )
-            middleware_position = kwargs.pop("middleware_position", 0)
-
-        if len(settings_middleware) < middleware_position:
-            _logger.debug(
-                "The middleware_position you provided (%s) is greater than the number of middlewares (%s). Defaulting "
-                "the middleware_position to 0.",
-                middleware_position,
-                len(settings_middleware),
-            )
-            middleware_position = 0
+        middleware_position = _get_django_otel_middleware_position(
+            len(settings_middleware), kwargs.pop("middleware_position", 0)
+        )
 
         if is_sql_commentor_enabled:
             settings_middleware.insert(