e2,kpm: fix crash when trying to send an indication without connected UEs

Author: pgawlowicz

lib/e2/e2sm/e2sm_kpm/e2sm_kpm_du_meas_provider_impl.cpp

@@ -284,8 +284,11 @@ bool e2sm_kpm_du_meas_provider_impl::get_cqi(const asn1::e2sm::label_info_list_l
                                              const std::optional<asn1::e2sm::cgi_c>       cell_global_id,
                                              std::vector<asn1::e2sm::meas_record_item_c>& items)
 {
-  bool                 meas_collected = false;
-  scheduler_ue_metrics ue_metrics     = last_ue_metrics[0];
+  bool meas_collected = false;
+  if (last_ue_metrics.size() == 0) {
+    return meas_collected;
+  }
+  scheduler_ue_metrics ue_metrics = last_ue_metrics[0];
 
   meas_record_item_c meas_record_item;
   meas_record_item.set_integer() = ue_metrics.cqi_stats.get_nof_observations() > 0
@@ -302,8 +305,11 @@ bool e2sm_kpm_du_meas_provider_impl::get_rsrp(const asn1::e2sm::label_info_list_
                                               const std::optional<asn1::e2sm::cgi_c>       cell_global_id,
                                               std::vector<asn1::e2sm::meas_record_item_c>& items)
 {
-  bool                 meas_collected = false;
-  scheduler_ue_metrics ue_metrics     = last_ue_metrics[0];
+  bool meas_collected = false;
+  if (last_ue_metrics.size() == 0) {
+    return meas_collected;
+  }
+  scheduler_ue_metrics ue_metrics = last_ue_metrics[0];
 
   meas_record_item_c meas_record_item;
   meas_record_item.set_integer() = (int)ue_metrics.pusch_snr_db;
@@ -318,8 +324,11 @@ bool e2sm_kpm_du_meas_provider_impl::get_rsrq(const asn1::e2sm::label_info_list_
                                               const std::optional<asn1::e2sm::cgi_c>       cell_global_id,
                                               std::vector<asn1::e2sm::meas_record_item_c>& items)
 {
-  bool                 meas_collected = false;
-  scheduler_ue_metrics ue_metrics     = last_ue_metrics[0];
+  bool meas_collected = false;
+  if (last_ue_metrics.size() == 0) {
+    return meas_collected;
+  }
+  scheduler_ue_metrics ue_metrics = last_ue_metrics[0];
 
   meas_record_item_c meas_record_item;
   meas_record_item.set_integer() = (int)ue_metrics.pusch_snr_db;
@@ -333,8 +342,11 @@ bool e2sm_kpm_du_meas_provider_impl::get_prb_avail_dl(const asn1::e2sm::label_in
                                                       const std::optional<asn1::e2sm::cgi_c>       cell_global_id,
                                                       std::vector<asn1::e2sm::meas_record_item_c>& items)
 {
-  bool                 meas_collected = false;
-  scheduler_ue_metrics ue_metrics     = last_ue_metrics[0];
+  bool meas_collected = false;
+  if (last_ue_metrics.size() == 0) {
+    return meas_collected;
+  }
+  scheduler_ue_metrics ue_metrics = last_ue_metrics[0];
   if ((label_info_list.size() > 1 or
        (label_info_list.size() == 1 and not label_info_list[0].meas_label.no_label_present))) {
     logger.debug("Metric: DRB.RlcPacketDropRateDl supports only NO_LABEL label.");
@@ -353,8 +365,11 @@ bool e2sm_kpm_du_meas_provider_impl::get_prb_avail_ul(const asn1::e2sm::label_in
                                                       const std::optional<asn1::e2sm::cgi_c>       cell_global_id,
                                                       std::vector<asn1::e2sm::meas_record_item_c>& items)
 {
-  bool                 meas_collected = false;
-  scheduler_ue_metrics ue_metrics     = last_ue_metrics[0];
+  bool meas_collected = false;
+  if (last_ue_metrics.size() == 0) {
+    return meas_collected;
+  }
+  scheduler_ue_metrics ue_metrics = last_ue_metrics[0];
   if ((label_info_list.size() > 1 or
        (label_info_list.size() == 1 and not label_info_list[0].meas_label.no_label_present))) {
     logger.debug("Metric: DRB.RlcPacketDropRateDl supports only NO_LABEL label.");
@@ -373,8 +388,11 @@ bool e2sm_kpm_du_meas_provider_impl::get_prb_use_perc_dl(const asn1::e2sm::label
                                                          const std::optional<asn1::e2sm::cgi_c>       cell_global_id,
                                                          std::vector<asn1::e2sm::meas_record_item_c>& items)
 {
-  bool                 meas_collected = false;
-  scheduler_ue_metrics ue_metrics     = last_ue_metrics[0];
+  bool meas_collected = false;
+  if (last_ue_metrics.size() == 0) {
+    return meas_collected;
+  }
+  scheduler_ue_metrics ue_metrics = last_ue_metrics[0];
   if ((label_info_list.size() > 1 or
        (label_info_list.size() == 1 and not label_info_list[0].meas_label.no_label_present))) {
     logger.debug("Metric: DRB.RlcPacketDropRateDl supports only NO_LABEL label.");
@@ -393,8 +411,11 @@ bool e2sm_kpm_du_meas_provider_impl::get_prb_use_perc_ul(const asn1::e2sm::label
                                                          const std::optional<asn1::e2sm::cgi_c>       cell_global_id,
                                                          std::vector<asn1::e2sm::meas_record_item_c>& items)
 {
-  bool                 meas_collected = false;
-  scheduler_ue_metrics ue_metrics     = last_ue_metrics[0];
+  bool meas_collected = false;
+  if (last_ue_metrics.size() == 0) {
+    return meas_collected;
+  }
+  scheduler_ue_metrics ue_metrics = last_ue_metrics[0];
   if ((label_info_list.size() > 1 or
        (label_info_list.size() == 1 and not label_info_list[0].meas_label.no_label_present))) {
     logger.debug("Metric: DRB.RlcPacketDropRateDl supports only NO_LABEL label.");