Merge branch 'nf_registration' into 'develop'

Basic NF registration completed

See merge request oai/cn5g/oai-cn5g-udr!14

build/scripts/build_helper.udr

@@ -366,12 +366,21 @@ check_install_udr_deps() {
   if [[ $OS_DISTRO == "ubuntu" ]]; then
     case "$(get_distribution_release)" in
       "ubuntu18.04")
+        # Currently Ubuntu18.04 has boost 1.65 as the latest
+        # We need at least 1.66
+        # PPA has 1.67
+        $SUDO add-apt-repository ppa:mhier/libboost-latest --yes
+        $SUDO $INSTALLER update
+        specific_packages="libconfig++-dev"        
+      ;;
+      *)
         specific_packages="libconfig++-dev libasio-dev libboost-all-dev"
       ;;
     esac
     # removed libspdlog-dev
     PACKAGE_LIST="\
       $specific_packages \
+      libboost1.67-dev \
       guile-2.0-dev \
       libcurl4-gnutls-dev \
       libevent-dev \

ci-scripts/docker/Dockerfile.ci.ubuntu.18.04

@@ -40,7 +40,6 @@ RUN git clone https://github.com/vishnubob/wait-for-it.git
 
 # Building UDR
 WORKDIR /openair-udr/build/scripts
-RUN ./build_udr --install-deps --force
 RUN ./build_udr --clean --Verbose --build-type Release --jobs && \
     ldd /openair-udr/build/udr/build/udr && \
     mv /openair-udr/build/udr/build/udr /openair-udr/build/udr/build/oai_udr
@@ -68,6 +67,7 @@ RUN apt-get update && \
       libnettle6 \
       libnghttp2-14 \
       libhogweed4 \
+      perl \
       libconfig++9v5 && \
     rm -rf /var/lib/apt/lists/*
 
@@ -82,7 +82,8 @@ COPY --from=oai-udr-builder \
 COPY --from=oai-udr-builder \
     /usr/local/lib/libpistache.so \
     /usr/local/lib/libnghttp2_asio.so.1 \
-    /usr/lib/x86_64-linux-gnu/libboost_system.so.1.65.1 \
+    /usr/lib/libboost_system.so.1.67.0 \
+    /usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4 \
     /usr/local/lib/
 
 RUN ldconfig && \

docker/Dockerfile.udr.ubuntu18

@@ -38,6 +38,7 @@ RUN apt-get update && \
     DEBIAN_FRONTEND=noninteractive apt-get upgrade --yes && \
     DEBIAN_FRONTEND=noninteractive apt-get install --yes \
       psmisc \
+      software-properties-common \
       git && \
     rm -rf /var/lib/apt/lists/*
 
@@ -84,6 +85,7 @@ RUN apt-get update && \
       libnettle6 \
       libnghttp2-14 \
       libhogweed4 \
+      perl \
       libconfig++9v5 && \
     rm -rf /var/lib/apt/lists/*
 
@@ -98,7 +100,8 @@ COPY --from=oai-udr-builder \
 COPY --from=oai-udr-builder \
     /usr/local/lib/libpistache.so \
     /usr/local/lib/libnghttp2_asio.so.1 \
-    /usr/lib/x86_64-linux-gnu/libboost_system.so.1.65.1 \
+    /usr/lib/libboost_system.so.1.67.0 \
+    /usr/lib/x86_64-linux-gnu/libcurl-gnutls.so.4 \
     /usr/local/lib/
 
 RUN ldconfig && \

etc/udr.conf

@@ -2,7 +2,15 @@ UDR =
 {
   INSTANCE_ID = @INSTANCE@;            # 0 is the default
   PID_DIRECTORY = "@PID_DIRECTORY@";   # /var/run is the default
-  
+
+
+  SUPPORT_FEATURES:{
+    # STRING, {"yes", "no"}, 
+    USE_FQDN_DNS = "@USE_FQDN_DNS@";    # Set to yes if AUSF will relying on a DNS to resolve UDM's FQDN
+    REGISTER_NRF = "@REGISTER_NRF@";    # Set to 'yes' if AUSF resgisters to an NRF
+    USE_HTTP2    = "@USE_HTTP2@";       # Set to yes to enable HTTP2 for AUSF server
+  } 
+
   INTERFACES:
   {
     # NUDR Interface (SBI) 
@@ -13,10 +21,17 @@ UDR =
       PORT           = @UDR_INTERFACE_PORT_FOR_NUDR@;         # YOUR NETWORK CONFIG HERE
       HTTP2_PORT     = @UDR_INTERFACE_HTTP2_PORT_FOR_NUDR@;   # YOUR NETWORK CONFIG HERE
       API_VERSION    = "@UDR_API_VERSION@";                   # YOUR NUDR API VERSION CONFIG HERE
-      
     };
   };
- 
+
+  NRF:
+  {
+    IPV4_ADDRESS = "@NRF_IPV4_ADDRESS@";  # YOUR NRF CONFIG HERE
+    PORT         = @NRF_PORT@;            # YOUR NRF CONFIG HERE (default: 80)
+    API_VERSION  = "@NRF_API_VERSION@";   # YOUR NRF API VERSION HERE
+    FQDN         = "@NRF_FQDN@";
+  };
+   
   MYSQL:
   {
     # MySQL options

scripts/entrypoint.sh

@@ -5,6 +5,13 @@ set -euo pipefail
 CONFIG_DIR="/openair-udr/etc"
 UDR_INTERFACE_PORT_FOR_NUDR=${UDR_INTERFACE_PORT_FOR_NUDR:-80}
 UDR_INTERFACE_HTTP2_PORT_FOR_NUDR=${UDR_INTERFACE_HTTP2_PORT_FOR_NUDR:-8080}
+USE_HTTP2=${USE_HTTP2:-no}
+USE_FQDN_DNS=${USE_FQDN_DNS:-no}
+REGISTER_NRF=${REGISTER_NRF:-no}
+NRF_IPV4_ADDRESS=${NRF_IPV4_ADDRESS:-0.0.0.0}
+NRF_PORT=${NRF_PORT:-80}
+NRF_API_VERSION=${NRF_API_VERSION:-v1}
+NRF_FQDN=${NRF_FQDN:-oai-nrf}
 
 for c in ${CONFIG_DIR}/*.conf; do
     # grep variable names (format: ${VAR}) from template to be rendered

src/common/3gpp_29.510.h

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the
+ * License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#ifndef FILE_3GPP_29_510_nssf_SEEN
+#define FILE_3GPP_29_510_nssf_SEEN
+
+#include <nlohmann/json.hpp>
+#include <vector>
+
+// Section 28.4, TS23.003
+typedef struct s_nssai {
+  uint8_t sST;
+  std::string sD;
+  s_nssai(const uint8_t &sst, const std::string sd) : sST(sst), sD(sd) {}
+  s_nssai() : sST(), sD() {}
+  s_nssai(const s_nssai &p) : sST(p.sST), sD(p.sD) {}
+  bool operator==(const struct s_nssai &s) const {
+    if ((s.sST == this->sST) && (s.sD.compare(this->sD) == 0)) {
+      return true;
+    } else {
+      return false;
+    }
+  }
+  s_nssai &operator=(const s_nssai &s) {
+    sST = s.sST;
+    sD = s.sD;
+    return *this;
+  }
+
+} snssai_t;
+
+typedef struct dnai_s {
+} dnai_t;
+
+typedef struct patch_item_s {
+  std::string op;
+  std::string path;
+  // std::string from;
+  std::string value;
+
+  nlohmann::json to_json() const {
+    nlohmann::json json_data = {};
+    json_data["op"] = op;
+    json_data["path"] = path;
+    json_data["value"] = value;
+    return json_data;
+  }
+} patch_item_t;
+
+#define UDR_CURL_TIMEOUT_MS 100L
+#define NNRF_NFM_BASE "/nnrf-nfm/"
+#define UDR_NF_REGISTER_URL "/nf-instances/"
+
+#endif
\ No newline at end of file

src/common/CMakeLists.txt

@@ -30,6 +30,7 @@ add_library(3GPP_COMMON_TYPES STATIC
   ${CMAKE_CURRENT_SOURCE_DIR}/pid_file.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/if.cpp
   ${CMAKE_CURRENT_SOURCE_DIR}/string.cpp
+  ${CMAKE_CURRENT_SOURCE_DIR}/fqdn.cpp
 )
 
 

src/common/fqdn.cpp

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the
+ * License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+#include "fqdn.hpp"
+#include "logger.hpp"
+#include <boost/asio.hpp>
+#include <iostream>
+
+bool fqdn::resolve(const std::string &host_name, std::string &address,
+                   uint32_t &port, uint8_t &addr_type,
+                   const std::string &protocol) {
+  try {
+    Logger::udr_app().debug("Resolving DNS:- %s", host_name.c_str());
+    boost::asio::io_context io_context = {};
+
+    boost::asio::ip::tcp::resolver resolver{io_context};
+    boost::asio::ip::tcp::resolver::results_type endpoints =
+        resolver.resolve(host_name, protocol);
+
+    addr_type = 0; // IPv4 by default
+    for (auto it = endpoints.cbegin(); it != endpoints.cend(); it++) {
+      // get the first Endpoint
+      boost::asio::ip::tcp::endpoint endpoint = *it;
+      address = endpoint.address().to_string();
+      port = endpoint.port();
+      Logger::udr_app().debug(
+          "Resolve a DNS (name %s, protocol %s): Ip Addr %s, port %u",
+          host_name.c_str(), protocol.c_str(), address.c_str(), port);
+      if (endpoint.address().is_v4())
+        addr_type = 0;
+      else
+        addr_type = 1;
+      return true;
+    }
+  } catch (std::exception &e) {
+    throw std::runtime_error("Cannot resolve a DNS name " +
+                             std::string(e.what()));
+    return false;
+  }
+
+  return false;
+}

src/common/fqdn.hpp

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the
+ * License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file fqdn.hpp
+ \brief
+ \author
+ \company Eurecom
+ \email:
+ */
+#ifndef FILE_FQDN_HPP_SEEN
+#define FILE_FQDN_HPP_SEEN
+#include <string>
+class fqdn {
+public:
+  /*
+   * Resolve a DNS name to get host's IP Addr
+   * @param [const std::string &] host_name: host's name/url
+   * @param [const std::string &] protocol: protocol
+   * @param [uint8_t &] addr_type: addr_type (Ipv4/v6)
+   * @return void
+   */
+  static bool resolve(const std::string &host_name, std::string &address,
+                      uint32_t &port, uint8_t &addr_type,
+                      const std::string &protocol = "http");
+};
+
+#endif /* FILE_FQDN_HPP_SEEN */

src/common/logger.cpp

@@ -70,6 +70,7 @@ void Logger::_init(const char *app, const bool log_stdout,
   m_config = new _Logger("configurations", m_sinks, ss.str().c_str());
   m_udr_server = new _Logger("udr_server", m_sinks, ss.str().c_str());
   m_udr_app = new _Logger("udr_app", m_sinks, ss.str().c_str());
+  m_udr_nrf = new _Logger("udr_nrf", m_sinks, ss.str().c_str());
 }
 
 //------------------------------------------------------------------------------

src/common/logger.hpp

@@ -85,6 +85,7 @@ public:
   static _Logger &system() { return *singleton().m_system; }
   static _Logger &config() { return *singleton().m_config; }
   static _Logger &udr_server() { return *singleton().m_udr_server; }
+  static _Logger &udr_nrf() { return *singleton().m_udr_nrf; }
 
 private:
   static Logger *m_singleton;
@@ -107,6 +108,7 @@ private:
   _Logger *m_config;
   _Logger *m_system;
   _Logger *m_udr_server;
+  _Logger *m_udr_nrf;
 };
 
 #endif

src/common/udr.h

@@ -32,4 +32,34 @@
 #define NUDR_DR_SMF_REG "smf-registrations"
 #define NUDR_DR_SMF_SELECT "smf-selection-subscription-data"
 
+#define NF_CURL_TIMEOUT_MS 1000L
+
+typedef struct identity_range_s {
+  std::string start;
+  std::string end;
+  std::string pattern;
+} identity_range_t;
+
+typedef struct identity_range_udr_info_item_s {
+  identity_range_t identity_range;
+} identity_range_udr_info_item_t;
+
+typedef struct supi_range_s {
+  std::string start;
+  std::string end;
+  std::string pattern;
+} supi_range_t;
+
+typedef struct supi_range_udr_info_item_s {
+  supi_range_t supi_range;
+} supi_range_udr_info_item_t;
+
+typedef struct udr_info_s {
+  std::string groupid;
+  std::vector<supi_range_udr_info_item_t> supi_ranges;
+  std::vector<identity_range_udr_info_item_t> gpsi_ranges;
+  std::vector<identity_range_udr_info_item_t> ext_grp_id_ranges;
+  std::vector<std::string> data_set_id;
+} udr_info_t;
+
 #endif

src/udr_app/CMakeLists.txt

@@ -29,6 +29,9 @@ include_directories(${SRC_TOP_DIR}/common/)
 add_library (UDR STATIC
   udr_app.cpp
   udr_config.cpp 
+  udr_profile.cpp
+  udr_nrf.cpp 
+  udr_client.cpp 
 )
 
 

src/udr_app/udr_app.cpp

@@ -38,6 +38,7 @@
 #include "SequenceNumber.h"
 #include "logger.hpp"
 #include "udr_config.hpp"
+#include "udr_nrf.hpp"
 
 using namespace oai::udr::app;
 using namespace oai::udr::model;
@@ -45,6 +46,7 @@ using namespace oai::udr::config;
 
 extern udr_app *udr_app_inst;
 extern udr_config udr_cfg;
+udr_nrf *udr_nrf_inst = nullptr;
 
 //------------------------------------------------------------------------------
 udr_app::udr_app(const std::string &config_file) {
@@ -65,7 +67,17 @@ udr_app::udr_app(const std::string &config_file) {
     throw std::runtime_error("Cannot connect to MySQL DB");
   }
 
-  // TODO: Register to NRF
+  // Register to NRF
+  if (udr_cfg.register_nrf) {
+    try {
+      udr_nrf_inst = new udr_nrf();
+      udr_nrf_inst->register_to_nrf();
+      Logger::udr_app().info("NRF TASK Created ");
+    } catch (std::exception &e) {
+      Logger::udr_app().error("Cannot create NRF TASK: %s", e.what());
+      throw;
+    }
+  }
   Logger::udr_app().startup("Started");
 }
 

src/udr_app/udr_client.cpp

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the
+ * License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file udr_client.cpp
+ \brief
+ \author  Jian Yang, Fengjiao He, Hongxin Wang, Tien-Thinh NGUYEN
+ \company Eurecom
+ \date 2020
+ \email:
+ */
+
+#include "udr_client.hpp"
+#include "3gpp_29.500.h"
+
+#include <curl/curl.h>
+#include <nlohmann/json.hpp>
+#include <pistache/http.h>
+#include <pistache/mime.h>
+#include <stdexcept>
+
+#include "logger.hpp"
+#include "udr.h"
+
+using namespace Pistache::Http;
+using namespace Pistache::Http::Mime;
+using namespace oai::udr::app;
+using namespace oai::udr::config;
+using json = nlohmann::json;
+
+extern udr_client *udr_client_inst;
+extern udr_config udr_cfg;
+
+//------------------------------------------------------------------------------
+// To read content of the response from NF
+static std::size_t callback(const char *in, std::size_t size, std::size_t num,
+                            std::string *out) {
+  const std::size_t totalBytes(size * num);
+  out->append(in, totalBytes);
+  return totalBytes;
+}
+
+//------------------------------------------------------------------------------
+udr_client::udr_client() {}
+
+//------------------------------------------------------------------------------
+udr_client::~udr_client() {
+  Logger::udr_app().debug("Delete UDR Client instance...");
+}
+
+//------------------------------------------------------------------------------
+void udr_client::curl_http_client(std::string remoteUri, std::string method,
+                                  std::string msgBody, std::string &response) {
+  Logger::udr_app().info("Send HTTP message with body %s", msgBody.c_str());
+
+  uint32_t str_len = msgBody.length();
+  char *body_data = (char *)malloc(str_len + 1);
+  memset(body_data, 0, str_len + 1);
+  memcpy((void *)body_data, (void *)msgBody.c_str(), str_len);
+
+  curl_global_init(CURL_GLOBAL_ALL);
+  CURL *curl = curl_easy_init();
+
+  uint8_t http_version = 1;
+  if (udr_cfg.use_http2)
+    http_version = 2;
+
+  if (curl) {
+    CURLcode res = {};
+    struct curl_slist *headers = nullptr;
+    if ((method.compare("POST") == 0) or (method.compare("PUT") == 0) or
+        (method.compare("PATCH") == 0)) {
+      std::string content_type = "Content-Type: application/json";
+      headers = curl_slist_append(headers, content_type.c_str());
+      curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headers);
+    }
+
+    curl_easy_setopt(curl, CURLOPT_URL, remoteUri.c_str());
+    if (method.compare("POST") == 0)
+      curl_easy_setopt(curl, CURLOPT_HTTPPOST, 1);
+    else if (method.compare("PUT") == 0)
+      curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PUT");
+    else if (method.compare("DELETE") == 0)
+      curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "DELETE");
+    else if (method.compare("PATCH") == 0)
+      curl_easy_setopt(curl, CURLOPT_CUSTOMREQUEST, "PATCH");
+    else
+      curl_easy_setopt(curl, CURLOPT_HTTPGET, 1);
+
+    curl_easy_setopt(curl, CURLOPT_TIMEOUT_MS, NF_CURL_TIMEOUT_MS);
+    curl_easy_setopt(curl, CURLOPT_TCP_KEEPALIVE, 1);
+    curl_easy_setopt(curl, CURLOPT_INTERFACE, udr_cfg.nudr.if_name.c_str());
+
+    if (http_version == 2) {
+      curl_easy_setopt(curl, CURLOPT_VERBOSE, 1L);
+      // we use a self-signed test server, skip verification during debugging
+      curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, 0L);
+      curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 0L);
+      curl_easy_setopt(curl, CURLOPT_HTTP_VERSION,
+                       CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE);
+    }
+
+    // Response information.
+    long httpCode = {0};
+    std::unique_ptr<std::string> httpData(new std::string());
+    std::unique_ptr<std::string> httpHeaderData(new std::string());
+
+    // Hook up data handling function.
+    curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, &callback);
+    curl_easy_setopt(curl, CURLOPT_WRITEDATA, httpData.get());
+    curl_easy_setopt(curl, CURLOPT_HEADERDATA, httpHeaderData.get());
+
+    if ((method.compare("POST") == 0) or (method.compare("PUT") == 0) or
+        (method.compare("PATCH") == 0)) {
+      curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, msgBody.length());
+      curl_easy_setopt(curl, CURLOPT_POSTFIELDS, body_data);
+    }
+    res = curl_easy_perform(curl);
+    curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &httpCode);
+
+    // Process the response
+    response = *httpData.get();
+    bool is_response_ok = true;
+    Logger::udr_app().info("Get response with HTTP code (%d)", httpCode);
+
+    if (httpCode == 0) {
+      Logger::udr_app().info("Cannot get response when calling %s",
+                             remoteUri.c_str());
+      // free curl before returning
+      curl_slist_free_all(headers);
+      curl_easy_cleanup(curl);
+      return;
+    }
+
+    nlohmann::json response_data = {};
+
+    if (httpCode != HTTP_STATUS_CODE_200_OK &&
+        httpCode != HTTP_STATUS_CODE_201_CREATED &&
+        httpCode != HTTP_STATUS_CODE_204_NO_CONTENT) {
+      is_response_ok = false;
+      if (response.size() < 1) {
+        Logger::udr_app().info("There's no content in the response");
+        // TODO: send context response error
+        return;
+      }
+      Logger::udr_app().warn("Receive response with HTTP code %d", httpCode);
+      return;
+    }
+
+    if (!is_response_ok) {
+      try {
+        response_data = nlohmann::json::parse(response);
+      } catch (nlohmann::json::exception &e) {
+        Logger::udr_app().info("Could not get JSON content from the response");
+        // Set the default Cause
+        response_data["error"]["cause"] = "504 Gateway Timeout";
+      }
+
+      Logger::udr_app().info("Get response with jsonData: %s",
+                             response.c_str());
+
+      std::string cause = response_data["error"]["cause"];
+      Logger::udr_app().info("Call Network Function services failure");
+      Logger::udr_app().info("Cause value: %s", cause.c_str());
+    }
+    curl_slist_free_all(headers);
+    curl_easy_cleanup(curl);
+  }
+
+  curl_global_cleanup();
+
+  if (body_data) {
+    free(body_data);
+    body_data = NULL;
+  }
+  return;
+}

src/udr_app/udr_client.hpp

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the
+ * License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file udr_client.hpp
+ \author  Tien-Thinh NGUYEN
+ \company Eurecom
+ \date 2020
+ \email:
+ */
+
+#ifndef FILE_UDR_CLIENT_HPP_SEEN
+#define FILE_UDR_CLIENT_HPP_SEEN
+
+#include <map>
+#include <thread>
+
+#include <curl/curl.h>
+
+#include "logger.hpp"
+#include "udr_config.hpp"
+
+namespace oai {
+namespace udr {
+namespace app {
+
+class udr_client {
+private:
+public:
+  udr_client();
+  virtual ~udr_client();
+
+  udr_client(udr_client const &) = delete;
+
+  void curl_http_client(std::string remoteUri, std::string method,
+                        std::string msgBody, std::string &response);
+};
+} // namespace app
+} // namespace udr
+} // namespace oai
+#endif /* FILE_UDR_CLIENT_HPP_SEEN */

src/udr_app/udr_config.cpp

@@ -29,6 +29,7 @@
 #include <boost/algorithm/string/split.hpp>
 
 #include "common_defs.h"
+#include "fqdn.hpp"
 #include "if.hpp"
 #include "logger.hpp"
 #include "string.hpp"
@@ -104,6 +105,98 @@ int udr_config::load(const std ::string &config_file) {
     return RETURNerror;
   }
 
+  // Support features
+  try {
+    const Setting &support_features =
+        udr_cfg[UDR_CONFIG_STRING_SUPPORT_FEATURES];
+    std::string opt = {};
+
+    support_features.lookupValue(
+        UDR_CONFIG_STRING_SUPPORT_FEATURES_USE_FQDN_DNS, opt);
+    if (boost::iequals(opt, "yes")) {
+      use_fqdn_dns = true;
+    } else {
+      use_fqdn_dns = false;
+    }
+
+    support_features.lookupValue(
+        UDR_CONFIG_STRING_SUPPORTED_FEATURES_REGISTER_NRF, opt);
+    if (boost::iequals(opt, "yes")) {
+      register_nrf = true;
+    } else {
+      register_nrf = false;
+    }
+
+    support_features.lookupValue(UDM_CONFIG_STRING_SUPPORT_FEATURES_USE_HTTP2,
+                                 opt);
+    if (boost::iequals(opt, "yes")) {
+      use_http2 = true;
+    } else {
+      use_http2 = false;
+    }
+  } catch (const SettingNotFoundException &nfex) {
+    Logger::udr_app().error("%s : %s, using defaults", nfex.what(),
+                            nfex.getPath());
+    return RETURNerror;
+  }
+
+  // NRF
+  if (register_nrf) {
+    try {
+      std::string astring = {};
+
+      const Setting &nrf_cfg = udr_cfg[UDR_CONFIG_STRING_NRF];
+      struct in_addr nrf_ipv4_addr = {};
+      unsigned int nrf_port = 0;
+      std::string nrf_api_version = {};
+
+      if (!use_fqdn_dns) {
+        nrf_cfg.lookupValue(UDR_CONFIG_STRING_NRF_IPV4_ADDRESS, astring);
+        IPV4_STR_ADDR_TO_INADDR(util::trim(astring).c_str(), nrf_ipv4_addr,
+                                "BAD IPv4 ADDRESS FORMAT FOR NRF !");
+        nrf_addr.ipv4_addr = nrf_ipv4_addr;
+        if (!(nrf_cfg.lookupValue(UDR_CONFIG_STRING_NRF_PORT, nrf_port))) {
+          Logger::udr_app().error(UDR_CONFIG_STRING_NRF_PORT "failed");
+          throw(UDR_CONFIG_STRING_NRF_PORT "failed");
+        }
+        nrf_addr.port = nrf_port;
+
+        if (!(nrf_cfg.lookupValue(UDR_CONFIG_STRING_API_VERSION,
+                                  nrf_api_version))) {
+          Logger::udr_app().error(UDR_CONFIG_STRING_API_VERSION "failed");
+          throw(UDR_CONFIG_STRING_API_VERSION "failed");
+        }
+        nrf_addr.api_version = nrf_api_version;
+
+      } else {
+        nrf_cfg.lookupValue(UDR_CONFIG_STRING_FQDN_DNS, astring);
+        uint8_t addr_type = {0};
+        std::string address = {};
+        fqdn::resolve(astring, address, nrf_port, addr_type);
+        if (addr_type != 0) { // IPv6
+          // TODO:
+          throw("DO NOT SUPPORT IPV6 ADDR FOR NRF!");
+        } else { // IPv4
+          IPV4_STR_ADDR_TO_INADDR(util::trim(address).c_str(), nrf_ipv4_addr,
+                                  "BAD IPv4 ADDRESS FORMAT FOR NRF !");
+          nrf_addr.ipv4_addr = nrf_ipv4_addr;
+          // We hardcode amf port from config for the moment
+          if (!(nrf_cfg.lookupValue(UDR_CONFIG_STRING_NRF_PORT, nrf_port))) {
+            Logger::udr_app().error(UDR_CONFIG_STRING_NRF_PORT "failed");
+            throw(UDR_CONFIG_STRING_NRF_PORT "failed");
+          }
+          nrf_addr.port = nrf_port;
+          nrf_addr.api_version = "v1"; // TODO: to get API version from DNS
+          nrf_addr.fqdn = astring;
+        }
+      }
+    } catch (const SettingNotFoundException &nfex) {
+      Logger::udr_app().error("%s : %s", nfex.what(), nfex.getPath());
+      return RETURNerror;
+    }
+  }
+
+  // MySQL
   try {
     const Setting &mysql_cfg = udr_cfg[UDR_CONFIG_STRING_MYSQL];
     mysql_cfg.lookupValue(UDR_CONFIG_STRING_MYSQL_SERVER, mysql.mysql_server);
@@ -191,7 +284,22 @@ void udr_config::display() {
   Logger::config().info("    HTTP2 port ..........: %d", nudr_http2_port);
   Logger::config().info("    API version..........: %s",
                         nudr.api_version.c_str());
-
+  Logger::config().info("- Supported Features:");
+  Logger::config().info("    Register NRF ..........: %s",
+                        register_nrf ? "Yes" : "No");
+  Logger::config().info("    Use FQDN ..............: %s",
+                        use_fqdn_dns ? "Yes" : "No");
+  Logger::config().info("    Use HTTP2 .............: %s",
+                        use_http2 ? "Yes" : "No");
+  Logger::config().info("- NRF:");
+  Logger::config().info("    IPv4 Addr ............: %s",
+                        inet_ntoa(*((struct in_addr *)&nrf_addr.ipv4_addr)));
+  Logger::config().info("    Port .................: %lu  ", nrf_addr.port);
+  Logger::config().info("    API version ..........: %s",
+                        nrf_addr.api_version.c_str());
+  if (use_fqdn_dns)
+    Logger::config().info("    FQDN .................: %s",
+                          nrf_addr.fqdn.c_str());
   Logger::config().info(
       "- MYSQL Server Addr...................................: %s",
       mysql.mysql_server.c_str());

src/udr_app/udr_config.hpp

@@ -38,6 +38,16 @@
 #define UDR_CONFIG_STRING_HTTP2_PORT "HTTP2_PORT"
 #define UDR_CONFIG_STRING_API_VERSION "API_VERSION"
 
+#define UDR_CONFIG_STRING_NRF "NRF"
+#define UDR_CONFIG_STRING_NRF_IPV4_ADDRESS "IPV4_ADDRESS"
+#define UDR_CONFIG_STRING_NRF_PORT "PORT"
+
+#define UDR_CONFIG_STRING_SUPPORT_FEATURES "SUPPORT_FEATURES"
+#define UDR_CONFIG_STRING_SUPPORT_FEATURES_USE_FQDN_DNS "USE_FQDN_DNS"
+#define UDR_CONFIG_STRING_SUPPORTED_FEATURES_REGISTER_NRF "REGISTER_NRF"
+#define UDM_CONFIG_STRING_SUPPORT_FEATURES_USE_HTTP2 "USE_HTTP2"
+#define UDR_CONFIG_STRING_FQDN_DNS "FQDN"
+
 #define UDR_CONFIG_STRING_MYSQL "MYSQL"
 #define UDR_CONFIG_STRING_MYSQL_SERVER "MYSQL_SERVER"
 #define UDR_CONFIG_STRING_MYSQL_USER "MYSQL_USER"
@@ -80,6 +90,17 @@ public:
   interface_cfg_t nudr;
   unsigned int nudr_http2_port;
 
+  struct {
+    struct in_addr ipv4_addr;
+    unsigned int port;
+    std::string api_version;
+    std::string fqdn;
+  } nrf_addr;
+
+  bool register_nrf;
+  bool use_fqdn_dns;
+  bool use_http2;
+
   mysql_conf_t mysql;
 };
 } // namespace oai::udr::config

src/udr_app/udr_nrf.cpp

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the
+ * License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file udr_nrf.cpp
+ \brief
+ \author  Jian Yang, Fengjiao He, Hongxin Wang, Tien-Thinh NGUYEN
+ \company Eurecom
+ \date 2020
+ \email:
+ */
+
+#include "udr_nrf.hpp"
+#include "udr_app.hpp"
+#include "udr_client.hpp"
+#include "udr_profile.hpp"
+#include <boost/uuid/random_generator.hpp>
+#include <boost/uuid/uuid_io.hpp>
+
+#include <curl/curl.h>
+#include <nlohmann/json.hpp>
+#include <pistache/http.h>
+#include <pistache/mime.h>
+#include <stdexcept>
+
+#include "logger.hpp"
+#include "udr.h"
+
+using namespace oai::udr::config;
+// using namespace udr;
+using namespace oai::udr::app;
+
+using json = nlohmann::json;
+
+extern udr_config udr_cfg;
+extern udr_nrf *udr_nrf_inst;
+udr_client *udr_client_instance = nullptr;
+
+//------------------------------------------------------------------------------
+udr_nrf::udr_nrf() {}
+//---------------------------------------------------------------------------------------------
+void udr_nrf::get_udr_api_root(std::string &api_root) {
+  api_root =
+      std::string(inet_ntoa(*((struct in_addr *)&udr_cfg.nrf_addr.ipv4_addr))) +
+      ":" + std::to_string(udr_cfg.nrf_addr.port) + NNRF_NFM_BASE +
+      udr_cfg.nrf_addr.api_version;
+}
+
+//---------------------------------------------------------------------------------------------
+void udr_nrf::generate_udr_profile(udr_profile &udr_nf_profile,
+                                   std::string &udr_instance_id) {
+  // TODO: remove hardcoded values
+  udr_nf_profile.set_nf_instance_id(udr_instance_id);
+  udr_nf_profile.set_nf_instance_name("OAI-UDR");
+  udr_nf_profile.set_nf_type("UDR");
+  udr_nf_profile.set_nf_status("REGISTERED");
+  udr_nf_profile.set_nf_heartBeat_timer(50);
+  udr_nf_profile.set_nf_priority(1);
+  udr_nf_profile.set_nf_capacity(100);
+  // udr_nf_profile.set_fqdn(udr_cfg.fqdn);
+  udr_nf_profile.add_nf_ipv4_addresses(udr_cfg.nudr.addr4);
+
+  // UDR info (Hardcoded for now)
+  // ToDo:-If none of these parameters are provided, the UDR can serve any
+  // external group and any SUPI or GPSI managed by the PLMN of the UDR
+  // instance. If "supiRanges", "gpsiRanges" and
+  // "externalGroupIdentifiersRanges" attributes are absent, and "groupId" is
+  // present, the SUPIs / GPSIs / ExternalGroups served by this UDR instance is
+  // determined by the NRF (see 3GPP TS 23.501 [2], clause 6.2.6.2).
+  udr_info_t udr_info_item;
+  supi_range_udr_info_item_t supi_ranges;
+  udr_info_item.groupid = "oai-udr-testgroupid";
+  udr_info_item.data_set_id.push_back("0210");
+  udr_info_item.data_set_id.push_back("9876");
+  supi_ranges.supi_range.start = "208950000000031";
+  supi_ranges.supi_range.pattern = "^imsi-20895[31-131]{6}$";
+  supi_ranges.supi_range.start = "208950000000131";
+  udr_info_item.supi_ranges.push_back(supi_ranges);
+  identity_range_udr_info_item_t gpsi_ranges;
+  gpsi_ranges.identity_range.start = "752740000";
+  gpsi_ranges.identity_range.pattern = "^gpsi-75274[0-9]{4}$";
+  gpsi_ranges.identity_range.end = "752749999";
+  udr_info_item.gpsi_ranges.push_back(gpsi_ranges);
+  udr_nf_profile.set_udr_info(udr_info_item);
+  // ToDo:- Add remaining fields
+  // UDR info item end
+
+  udr_nf_profile.display();
+}
+//---------------------------------------------------------------------------------------------
+void udr_nrf::register_to_nrf() {
+  // generate UUID
+  std::string udr_instance_id; // UDR instance id
+  udr_instance_id = to_string(boost::uuids::random_generator()());
+  nlohmann::json response_data = {};
+
+  // Generate NF Profile
+  udr_profile udr_nf_profile;
+  generate_udr_profile(udr_nf_profile, udr_instance_id);
+
+  // Send NF registeration request
+  std::string udr_api_root = {};
+  std::string response = {};
+  std::string method = {"PUT"};
+  get_udr_api_root(udr_api_root);
+  std::string remoteUri = udr_api_root + UDR_NF_REGISTER_URL + udr_instance_id;
+  nlohmann::json json_data = {};
+  udr_nf_profile.to_json(json_data);
+
+  Logger::udr_nrf().info("Sending NF registeration request");
+  udr_client_instance->curl_http_client(remoteUri, method,
+                                        json_data.dump().c_str(), response);
+
+  try {
+    response_data = nlohmann::json::parse(response);
+    if (response_data["nfStatus"].dump().c_str() == "REGISTERED") {
+      // ToDo Trigger NF heartbeats
+    }
+  } catch (nlohmann::json::exception &e) {
+    Logger::udr_nrf().info("NF registeration procedure failed");
+  }
+}
+//---------------------------------------------------------------------------------------------

src/udr_app/udr_nrf.hpp

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the
+ * License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file udr_client.hpp
+ \author  Tien-Thinh NGUYEN
+ \company Eurecom
+ \date 2020
+ \email:
+ */
+
+#ifndef FILE_UDR_NRF_SEEN
+#define FILE_UDR_NRF_SEEN
+
+#include <map>
+#include <thread>
+
+#include <curl/curl.h>
+
+#include "logger.hpp"
+#include "udr_config.hpp"
+#include "udr_profile.hpp"
+
+namespace oai {
+namespace udr {
+namespace app {
+
+class udr_nrf {
+private:
+public:
+  udr_profile udr_nf_profile;  // UDR profile
+  std::string udr_instance_id; // UDR instance id
+  // timer_id_t timer_udr_heartbeat;
+
+  udr_nrf();
+  udr_nrf(udr_nrf const &) = delete;
+  void operator=(udr_nrf const &) = delete;
+
+  void generate_uuid();
+
+  /*
+   * Generate a UDR profile for this instance
+   * @param [void]
+   * @return void
+   */
+  void generate_udr_profile(udr_profile &udr_nf_profile,
+                            std::string &udr_instance_id);
+
+  /*
+   * Trigger NF instance registration to NRF
+   * @param [void]
+   * @return void
+   */
+  void register_to_nrf();
+  /*
+   * Get udr API Root
+   * @param [std::string& ] api_root: udr's API Root
+   * @return void
+   */
+  void get_udr_api_root(std::string &api_root);
+};
+} // namespace app
+} // namespace udr
+} // namespace oai
+#endif /* FILE_UDR_NRF_SEEN */

src/udr_app/udr_profile.hpp

+/*
+ * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The OpenAirInterface Software Alliance licenses this file to You under
+ * the OAI Public License, Version 1.1  (the "License"); you may not use this
+ * file except in compliance with the License. You may obtain a copy of the
+ * License at
+ *
+ *      http://www.openairinterface.org/?page_id=698
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *-------------------------------------------------------------------------------
+ * For more information about the OpenAirInterface (OAI) Software Alliance:
+ *      contact@openairinterface.org
+ */
+
+/*! \file udr_profile.hpp
+ \brief
+ \author  Tien-Thinh NGUYEN
+ \company Eurecom
+ \date 2021
+ \email: Tien-Thinh.Nguyen@eurecom.fr
+ */
+
+#ifndef FILE_UDR_PROFILE_HPP_SEEN
+#define FILE_UDR_PROFILE_HPP_SEEN
+
+#include <arpa/inet.h>
+#include <netinet/in.h>
+#include <nlohmann/json.hpp>
+#include <shared_mutex>
+#include <vector>
+
+#include "3gpp_29.510.h"
+#include "logger.hpp"
+#include "udr.h"
+
+namespace oai {
+namespace udr {
+namespace app {
+
+class udr_profile : public std::enable_shared_from_this<udr_profile> {
+public:
+  udr_profile()
+      : nf_type("NF_TYPE_UNKNOWN"), heartBeat_timer(0), snssais(), fqdn(),
+        ipv4_addresses(), priority(0), capacity(0) {
+    nf_instance_name = {};
+    nf_status = {};
+  }
+
+  udr_profile(const std::string &id)
+      : nf_instance_id(id), heartBeat_timer(0), snssais(), fqdn(),
+        ipv4_addresses(), priority(0), capacity(0), nf_type("NF_TYPE_UNKNOWN") {
+    nf_instance_name = {};
+    nf_status = {};
+  }
+
+  udr_profile &operator=(const udr_profile &s) {
+    nf_instance_id = s.nf_instance_id;
+    heartBeat_timer = s.heartBeat_timer;
+    snssais = s.snssais;
+    fqdn = s.fqdn;
+    ipv4_addresses = s.ipv4_addresses;
+    priority = s.priority;
+    capacity = s.capacity;
+    nf_type = s.nf_type;
+    nf_instance_name = s.nf_instance_name;
+    nf_status = s.nf_status;
+    udr_info = s.udr_info;
+    return *this;
+  }
+  // udr_profile(udr_profile &b) = delete;
+
+  virtual ~udr_profile() {
+    // Logger::udr_app().debug("Delete udr Profile instance...");
+  }
+
+  /*
+   * Set NF instance ID
+   * @param [const std::string &] instance_id: instance id
+   * @return void
+   */
+  void set_nf_instance_id(const std::string &instance_id);
+  /*
+   * Get NF instance ID
+   * @param [std::string &] instance_id: store instance id
+   * @return void:
+   */
+  void get_nf_instance_id(std::string &instance_id) const;
+
+  /*
+   * Get NF instance ID
+   * @param [std::string &] instance_id: store instance id
+   * @return void:
+   */
+  std::string get_nf_instance_id() const;
+
+  /*
+   * Set NF instance name
+   * @param [const std::string &] instance_name: instance name
+   * @return void
+   */
+  void set_nf_instance_name(const std::string &instance_name);
+
+  /*
+   * Get NF instance ID
+   * @param [std::string &] instance_name: store instance name
+   * @return void:
+   */
+  void get_nf_instance_name(std::string &instance_name) const;
+
+  /*
+   * Get NF instance name
+   * @param
+   * @return [std::string] instance name
+   */
+  std::string get_nf_instance_name() const;
+
+  /*
+   * Set NF instance status
+   * @param [const std::string &] status: instance status
+   * @return void
+   */
+  void set_nf_status(const std::string &status);
+
+  /*
+   * Get NF instance status
+   * @param [std::string &] status: store instance status
+   * @return void:
+   */
+  void get_nf_status(std::string &status) const;
+
+  /*
+   * Get NF status
+   * @param
+   * @return [std::string] instance status
+   */
+  std::string get_nf_status() const;
+
+  /*
+   * Get NF type
+   * @param
+   * @return [std::string] nf type
+   */
+  std::string get_nf_type() const;
+
+  /*
+   * Set NF type
+   * @param [const nf_type_t &] type: nf type
+   * @return void
+   */
+  void set_nf_type(const std::string &type);
+
+  /*
+   * Set NF instance heartBeat_timer
+   * @param [const std::string &] timer: heartBeat_timer
+   * @return void
+   */
+  void set_nf_heartBeat_timer(const int32_t &timer);
+
+  /*
+   * Get NF instance heartBeat_timer
+   * @param [std::string &] timer: store heartBeat_timer
+   * @return void:
+   */
+  void get_nf_heartBeat_timer(int32_t &timer) const;
+
+  /*
+   * Get NF heartBeat_timer
+   * @param void
+   * @return heartBeat_timer
+   */
+  int32_t get_nf_heartBeat_timer() const;
+
+  /*
+   * Set NF instance priority
+   * @param [const uint16_t] p: instance priority
+   * @return void
+   */
+  void set_nf_priority(const uint16_t &p);
+
+  /*
+   * Get NF instance priority
+   * @param [uint16_t] p: store instance priority
+   * @return void:
+   */
+  void get_nf_priority(uint16_t &p) const;
+
+  /*
+   * Get NF instance priority
+   * @param void
+   * @return [uint16_t] instance priority
+   */
+  uint16_t get_nf_priority() const;
+
+  /*
+   * Set NF instance capacity
+   * @param [const uint16_t] c: instance capacity
+   * @return void
+   */
+  void set_nf_capacity(const uint16_t &c);
+
+  /*
+   * Get NF instance priority
+   * @param [uint16_t ] c: store instance capacity
+   * @return void:
+   */
+  void get_nf_capacity(uint16_t &c) const;
+
+  /*
+   * Get NF instance priority
+   * @param void
+   * @return [uint16_t ] instance capacity
+   */
+  uint16_t get_nf_capacity() const;
+
+  /*
+   * Set NF instance SNSSAIs
+   * @param [std::vector<snssai_t> &] s: SNSSAIs
+   * @return void
+   */
+  void set_nf_snssais(const std::vector<snssai_t> &s);
+
+  /*
+   * Add SNSSAI
+   * @param [snssai_t &] s: SNSSAI
+   * @return void
+   */
+  void add_snssai(const snssai_t &s);
+
+  /*
+   * Get NF instance SNSSAIs
+   * @param [std::vector<snssai_t> &] s: store instance's SNSSAIs
+   * @return void:
+   */
+  void get_nf_snssais(std::vector<snssai_t> &s) const;
+
+  /*
+   * Get NF fqdn
+   * @param
+   * @return [std::string] nf fqdn
+   */
+  std::string get_fqdn() const;
+
+  /*
+   * Set NF fqdn
+   * @param [const fqdn_t &] fqdn: nf fqdn
+   * @return void
+   */
+  void set_fqdn(const std::string &fqdn);
+
+  /*
+   * Set NF instance ipv4_addresses
+   * @param [std::vector<struct in_addr> &] a: ipv4_addresses
+   * @return void
+   */
+  void set_nf_ipv4_addresses(const std::vector<struct in_addr> &a);
+
+  /*
+   * Add an IPv4 address to the list of addresses
+   * @param [const struct in_addr &] a: ipv4_address
+   * @return void
+   */
+  void add_nf_ipv4_addresses(const struct in_addr &a);
+
+  /*
+   * Get NF instance ipv4_addresses
+   * @param [std::vector<struct in_addr> &] a: store instance's ipv4_addresses
+   * @return void:
+   */
+  void get_nf_ipv4_addresses(std::vector<struct in_addr> &a) const;
+
+  /*
+   * Set udr info
+   * @param [udr_info_t &] s: udr info
+   * @return void
+   */
+  void set_udr_info(const udr_info_t &s);
+
+  /*
+   * Get NF instance udr info
+   * @param [udr_info_t &] s: store instance's udr info
+   * @return void:
+   */
+  void get_udr_info(udr_info_t &s) const;
+
+  /*
+   * Print related-information for NF profile
+   * @param void
+   * @return void:
+   */
+  void display() const;
+
+  /*
+   * Represent NF profile as json object
+   * @param [nlohmann::json &] data: Json data
+   * @return void
+   */
+  void to_json(nlohmann::json &data) const;
+
+  /*
+   * Covert from a json represetation to udr profile
+   * @param [nlohmann::json &] data: Json data
+   * @return void
+   */
+  void from_json(const nlohmann::json &data);
+
+  /*
+   * Handle heartbeart timeout event
+   * @param [uint64_t] ms: current time
+   * @return void
+   */
+  void handle_heartbeart_timeout(uint64_t ms);
+
+protected:
+  // From NFProfile (Section 6.1.6.2.2@3GPP TS 29.510 V16.0.0 (2019-06))
+  std::string nf_instance_id;
+  std::string nf_instance_name;
+  std::string nf_type;
+  std::string nf_status;
+  int32_t heartBeat_timer;
+  std::vector<snssai_t> snssais;
+  std::string fqdn;
+  std::vector<struct in_addr> ipv4_addresses;
+  uint16_t priority;
+  uint16_t capacity;
+  udr_info_t udr_info;
+};
+
+} // namespace app
+} // namespace udr
+} // namespace oai
+
+#endif