Skip internal Django exception for 4XX responses in ErrorLoggingMiddl…

…eware

Fix #17

django_datadog_logger/middleware/error_log.py

@@ -1,5 +1,8 @@
 import logging
 
+from django.core.exceptions import PermissionDenied, BadRequest, SuspiciousOperation
+from django.http import Http404
+from django.http.multipartparser import MultiPartParserError
 
 logger = logging.getLogger(__name__)
 
@@ -12,6 +15,11 @@ def __call__(self, request):
         return self.get_response(request)
 
     def process_exception(self, request, exception):
+        if isinstance(
+            exception,
+            (PermissionDenied, Http404, MultiPartParserError, BadRequest, SuspiciousOperation),
+        ):
+            return
         logger.exception(exception)
 
     def process_response(self, request, response):