cu_cp: add console output for failed du/cu-up connections and failed ue creations

Author: FabianEckermann

lib/cu_cp/cu_up_processor/cu_up_processor_repository.cpp

@@ -31,8 +31,12 @@ cu_up_index_t cu_up_processor_repository::add_cu_up(std::unique_ptr<e1ap_message
 {
   cu_up_index_t cu_up_index = allocate_cu_up_index();
   if (cu_up_index == cu_up_index_t::invalid) {
-    logger.warning("CU-UP connection failed - maximum number of CU-UPs connected ({})",
+    logger.warning("CU-UP connection failed. Cause: Maximum number of CU-UPs connected ({})",
                    cfg.cu_cp.admission.max_nof_cu_ups);
+    fmt::print(
+        "CU-UP connection failed. Cause: Maximum number of CU-UPs connected ({}). To increase the number of allowed "
+        "CU-UPs change the \"--max_nof_cu_ups\" in the CU-CP configuration\n",
+        cfg.cu_cp.admission.max_nof_cu_ups);
     return cu_up_index_t::invalid;
   }
 

lib/cu_cp/du_processor/du_processor_repository.cpp

@@ -32,7 +32,11 @@ du_index_t du_processor_repository::add_du(std::unique_ptr<f1ap_message_notifier
 {
   du_index_t du_index = get_next_du_index();
   if (du_index == du_index_t::invalid) {
-    logger.warning("DU connection failed - maximum number of DUs connected ({})", cfg.cu_cp.admission.max_nof_dus);
+    logger.warning("DU connection failed. Cause: Maximum number of DUs connected ({})",
+                   cfg.cu_cp.admission.max_nof_dus);
+    fmt::print("DU connection failed. Cause: Maximum number of DUs connected ({}). To increase the number of allowed "
+               "DUs change the \"--max_nof_dus\" in the CU-CP configuration\n",
+               cfg.cu_cp.admission.max_nof_dus);
     return du_index_t::invalid;
   }
 

lib/cu_cp/ue_manager/ue_manager_impl.cpp

@@ -65,8 +65,13 @@ ue_index_t ue_manager::add_ue(du_index_t                     du_index,
   }
 
   if (ues.size() == max_nof_ues) {
-    logger.warning("CU-CP UE creation Failed. Cause: Maximum number of UEs {} supported by the CU-CP has been reached",
-                   max_nof_ues);
+    logger.warning(
+        "CU-CP UE creation Failed. Cause: Maximum number of UEs supported by the CU-CP ({}) has been reached",
+        max_nof_ues);
+    fmt::print("CU-CP UE creation failed. Cause: Maximum number of UEs supported by the CU-CP ({}) has been reached. "
+               "To increase the number of supported "
+               "UEs change the \"--max_nof_ues\" in the CU-CP configuration\n",
+               max_nof_ues);
     return ue_index_t::invalid;
   }