misc: don't log payload as is, use repr() so it can be stored (#30558)

passerelle/utils/__init__.py

@@ -242,7 +242,7 @@ class Request(RequestSession):
         if self.logger.level == 10:  # DEBUG
             extra['request_headers'] = dict(request.headers.items())
             if request.body:
-                extra['request_payload'] = repr(request.body)
+                extra['request_payload'] = repr(request.body[:5000])
         log_function = self.logger.info
         if response is not None:
             message = message + ' (=> %s)' % response.status_code

passerelle/utils/jsonresponse.py

@@ -152,7 +152,7 @@ class to_json(object):
             if not self.logger:
                 extras['request'] = req
             if req.method == 'POST':
-                extras.update({'body': req.body})
+                extras.update({'body': repr(req.body[:5000])})
             if (not isinstance(e, (Http404, PermissionDenied, ObjectDoesNotExist, RequestException))
                     and getattr(e, 'log_error', True)):
                 logger.exception("Error occurred while processing request", extra=extras)