LBT-7347

# partitioning batch permission assignment requests

Author: tomaszw_backbase

stream-access-control/access-control-core/src/main/java/com/backbase/stream/service/AccessGroupService.java

@@ -611,7 +611,8 @@ public Mono<BatchProductGroupTask> assignPermissionsBatch(BatchProductGroupTask
                     "Assigning permissions: %s",
                     userPermissionsList.stream().map(this::prettyPrintUserAssignedPermissions)
                         .collect(Collectors.joining(",")));
-                return assignPermissionsIntegrationApi.batchUpdateUserPermissions(map(userPermissionsList))
+                return Flux.fromIterable(partitionList(map(userPermissionsList), 1000))
+                    .flatMap(assignPermissionsIntegrationApi::batchUpdateUserPermissions)
                     .map(r -> batchResponseUtils.checkBatchResponseItem(r, "Permissions Update",
                         r.getStatus().toString(), r.getResourceId(), r.getErrors()))
                     .doOnNext(