From 91141e41ad925290d104a334c2d35e0954d27db3 Mon Sep 17 00:00:00 2001
From: Piotr Gawlowicz <piotr@srs.io>
Date: Wed, 22 Mar 2023 18:01:18 +0100
Subject: [PATCH] e2sm_kpm: add definition of supported metrics

---
 srsgnb/hdr/stack/ric/e2sm_kpm_metrics.h | 78 +++++++++++++++++++++++++
 srsgnb/src/stack/ric/e2sm_kpm.cc        | 25 +++++++-
 2 files changed, 100 insertions(+), 3 deletions(-)
 create mode 100644 srsgnb/hdr/stack/ric/e2sm_kpm_metrics.h

diff --git a/srsgnb/hdr/stack/ric/e2sm_kpm_metrics.h b/srsgnb/hdr/stack/ric/e2sm_kpm_metrics.h
new file mode 100644
index 000000000..162086c50
--- /dev/null
+++ b/srsgnb/hdr/stack/ric/e2sm_kpm_metrics.h
@@ -0,0 +1,78 @@
+/**
+ *
+ * \section COPYRIGHT
+ *
+ * Copyright 2013-2022 Software Radio Systems Limited
+ *
+ * By using this file, you agree to the terms and conditions set
+ * forth in the LICENSE file which can be found at the top level of
+ * the distribution.
+ *
+ *
+ */
+
+#ifndef SRSRAN_E2SM_KPM_METRICS_H
+#define SRSRAN_E2SM_KPM_METRICS_H
+
+#include "srsran/srsran.h"
+
+#define NO_LABEL 0x0001
+#define MIN_LABEL 0x0002
+#define MAX_LABEL 0x0004
+#define AVG_LABEL 0x0008
+
+enum e2_metric_data_type_t { INTEGER, REAL };
+
+struct E2SM_KPM_metric_t {
+  std::string           name;
+  e2_metric_data_type_t data_type;
+  std::string           units;
+  bool                  min_val_present;
+  double                min_val;
+  bool                  max_val_present;
+  double                max_val;
+  uint32_t              supported_labels;
+  bool                  supported;
+};
+
+// Measurements defined in 3GPP TS 28.552
+std::vector<E2SM_KPM_metric_t> get_e2sm_kpm_28_552_metrics()
+{
+  // TODO: add all metrics from 3GPP TS 28.552
+  std::vector<E2SM_KPM_metric_t> metrics;
+  // supported metrics
+  metrics.push_back({"RRU.PrbTotDl", REAL, "%", true, 0, true, 100, NO_LABEL | AVG_LABEL, true});
+  metrics.push_back({"RRU.PrbTotUl", REAL, "%", true, 0, true, 100, NO_LABEL | AVG_LABEL, true});
+  // not supported metrics
+  metrics.push_back({"RRU.RachPreambleDedMean", REAL, "%", false, 0, false, 100, NO_LABEL, false});
+  return metrics;
+}
+
+// Measurements defined in 3GPP TS 32.425
+std::vector<E2SM_KPM_metric_t> get_e2sm_kpm_34_425_metrics()
+{
+  // TODO: add all metrics from 3GPP TS 32.425
+  std::vector<E2SM_KPM_metric_t> metrics;
+  return metrics;
+}
+
+// E2SM_KPM O-RAN specific Measurements
+std::vector<E2SM_KPM_metric_t> e2sm_kpm_oran_metrics()
+{
+  // TODO: add all E2SM_KPM O-RAN specific Measurements
+  std::vector<E2SM_KPM_metric_t> metrics;
+  return metrics;
+}
+
+// Custom Measurements
+std::vector<E2SM_KPM_metric_t> e2sm_kpm_custom_metrics()
+{
+  std::vector<E2SM_KPM_metric_t> metrics;
+  // supported metrics
+  metrics.push_back({"test", REAL, "", true, 0, true, 100, NO_LABEL, true});
+  // not supported metrics
+  metrics.push_back({"test123", REAL, "", true, 0, true, 100, NO_LABEL, false});
+  return metrics;
+}
+
+#endif // SRSRAN_E2SM_KPM_METRICS_H
diff --git a/srsgnb/src/stack/ric/e2sm_kpm.cc b/srsgnb/src/stack/ric/e2sm_kpm.cc
index 9309b3aca..9897ac716 100644
--- a/srsgnb/src/stack/ric/e2sm_kpm.cc
+++ b/srsgnb/src/stack/ric/e2sm_kpm.cc
@@ -1,4 +1,5 @@
 #include "srsgnb/hdr/stack/ric/e2sm_kpm.h"
+#include "srsgnb/hdr/stack/ric/e2sm_kpm_metrics.h"
 
 const std::string e2sm_kpm::short_name       = "ORAN-E2SM-KPM";
 const std::string e2sm_kpm::oid              = "1.3.6.1.4.1.53148.1.2.2.2";
@@ -9,9 +10,27 @@ e2sm_kpm::e2sm_kpm(srslog::basic_logger& logger_) : e2sm(short_name, oid, func_d
 {
   random_gen = srsran_random_init(1234);
 
-  supported_meas_types.push_back("RRU.PrbTotDl");
-  supported_meas_types.push_back("RRU.PrbTotUl");
-  supported_meas_types.push_back("test");
+  // add supported metrics
+  for (auto& metric : get_e2sm_kpm_28_552_metrics()) {
+    if (metric.supported) {
+      supported_meas_types.push_back(metric.name);
+    }
+  }
+  for (auto& metric : get_e2sm_kpm_34_425_metrics()) {
+    if (metric.supported) {
+      supported_meas_types.push_back(metric.name);
+    }
+  }
+  for (auto& metric : e2sm_kpm_oran_metrics()) {
+    if (metric.supported) {
+      supported_meas_types.push_back(metric.name);
+    }
+  }
+  for (auto& metric : e2sm_kpm_custom_metrics()) {
+    if (metric.supported) {
+      supported_meas_types.push_back(metric.name);
+    }
+  }
 }
 
 bool e2sm_kpm::generate_ran_function_description(RANfunction_description& desc, ra_nfunction_item_s& ran_func)