Slicing

This is the slicing xApp in C. We kindly point the readers to the python version to understand the function calls and the O-RAN messages involved on it.

#include <assert.h>
#include <stdlib.h>
#include <string.h>

#include "../../sdk/xapp_sdk_api.h"

int find_idx_gnb_or_du(arr_node_data_t const* arr)
{
  assert(arr != NULL);
  for(size_t i = 0; i < arr->sz; ++i){
   global_e2_node_id_sdk_t* n = &arr->n[i].node;
   if(n->type == e2ap_ngran_gNB_DU_SDK || n->type == e2ap_ngran_gNB_SDK){
    return i;
   }
  }
  return -1;
}

int main(int argc, char** argv)
{
  init_xapp_sdk(argc, argv);

  arr_node_data_t arr = node_data_xapp_sdk(SLICE_USE_CASE_e);

  assert(arr.sz > 0 && "At least one gNB needed for slicing");

  int const idx = find_idx_gnb_or_du(&arr);
  assert(idx > -1 && "Not a gNB or DU found!");

  global_e2_node_id_sdk_t const* node = &arr.n[idx].node; 

  char const sst[] = "1";
  char const sd[] = "";

  int const dedicated_prb = 10;
  slice_xapp_sdk(node, sst, sd, dedicated_prb);

  free_arr_node_data(&arr);

  return EXIT_SUCCESS;
}