333 lines
10 KiB
C
333 lines
10 KiB
C
/*
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* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "context.h"
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#include "sbi-path.h"
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#include "nnrf-handler.h"
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void nrf_nf_fsm_init(ogs_sbi_nf_instance_t *nf_instance)
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{
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nrf_event_t e;
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ogs_assert(nf_instance);
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memset(&e, 0, sizeof(e));
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e.nf_instance = nf_instance;
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ogs_fsm_create(&nf_instance->sm,
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nrf_nf_state_initial, nrf_nf_state_final);
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ogs_fsm_init(&nf_instance->sm, &e);
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}
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void nrf_nf_fsm_fini(ogs_sbi_nf_instance_t *nf_instance)
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{
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nrf_event_t e;
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ogs_assert(nf_instance);
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memset(&e, 0, sizeof(e));
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e.nf_instance = nf_instance;
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ogs_fsm_fini(&nf_instance->sm, &e);
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ogs_fsm_delete(&nf_instance->sm);
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}
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void nrf_nf_state_initial(ogs_fsm_t *s, nrf_event_t *e)
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{
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ogs_sbi_nf_instance_t *nf_instance = NULL;
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ogs_assert(s);
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ogs_assert(e);
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nrf_sm_debug(e);
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nf_instance = e->nf_instance;
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ogs_assert(nf_instance);
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nf_instance->t_no_heartbeat = ogs_timer_add(ogs_app()->timer_mgr,
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nrf_timer_nf_instance_no_heartbeat, nf_instance);
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ogs_assert(nf_instance->t_no_heartbeat);
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OGS_FSM_TRAN(s, &nrf_nf_state_will_register);
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}
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void nrf_nf_state_final(ogs_fsm_t *s, nrf_event_t *e)
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{
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ogs_sbi_nf_instance_t *nf_instance = NULL;
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ogs_assert(s);
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ogs_assert(e);
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nrf_sm_debug(e);
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nf_instance = e->nf_instance;
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ogs_assert(nf_instance);
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ogs_timer_delete(nf_instance->t_no_heartbeat);
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}
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void nrf_nf_state_will_register(ogs_fsm_t *s, nrf_event_t *e)
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{
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bool handled;
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ogs_sbi_nf_instance_t *nf_instance = NULL;
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ogs_sbi_stream_t *stream = NULL;
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ogs_sbi_message_t *message = NULL;
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ogs_assert(s);
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ogs_assert(e);
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nrf_sm_debug(e);
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nf_instance = e->nf_instance;
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ogs_assert(nf_instance);
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switch (e->id) {
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case OGS_FSM_ENTRY_SIG:
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break;
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case OGS_FSM_EXIT_SIG:
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break;
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case NRF_EVT_SBI_SERVER:
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message = e->sbi.message;
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ogs_assert(message);
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stream = e->sbi.data;
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ogs_assert(stream);
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SWITCH(message->h.service.name)
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CASE(OGS_SBI_SERVICE_NAME_NNRF_NFM)
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SWITCH(message->h.resource.component[0])
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CASE(OGS_SBI_RESOURCE_NAME_NF_INSTANCES)
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SWITCH(message->h.method)
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CASE(OGS_SBI_HTTP_METHOD_PUT)
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handled = nrf_nnrf_handle_nf_register(
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nf_instance, stream, message);
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if (handled == false)
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OGS_FSM_TRAN(s, nrf_nf_state_exception);
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break;
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DEFAULT
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ogs_error("[%s] Invalid HTTP method [%s]",
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nf_instance->id, message->h.method);
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ogs_assert(true ==
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ogs_sbi_server_send_error(stream,
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OGS_SBI_HTTP_STATUS_MEHTOD_NOT_ALLOWED, message,
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"Invalid HTTP method", message->h.method));
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END
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break;
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DEFAULT
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ogs_error("[%s] Invalid resource name [%s]",
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nf_instance->id, message->h.resource.component[0]);
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ogs_assert(true ==
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ogs_sbi_server_send_error(stream,
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OGS_SBI_HTTP_STATUS_MEHTOD_NOT_ALLOWED, message,
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"Invalid resource name",
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message->h.resource.component[0]));
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END
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break;
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DEFAULT
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ogs_error("[%s] Invalid API name [%s]",
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nf_instance->id, message->h.service.name);
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ogs_assert(true ==
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ogs_sbi_server_send_error(stream,
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OGS_SBI_HTTP_STATUS_MEHTOD_NOT_ALLOWED, message,
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"Invalid resource name", message->h.service.name));
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END
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OGS_FSM_TRAN(s, nrf_nf_state_registered);
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break;
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default:
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ogs_error("[%s] Unknown event %s",
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nf_instance->id, nrf_event_get_name(e));
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ogs_assert(true ==
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ogs_sbi_server_send_error(stream,
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OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR,
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message, "Unknown event", nrf_event_get_name(e)));
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OGS_FSM_TRAN(s, nrf_nf_state_exception);
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break;
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}
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}
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void nrf_nf_state_registered(ogs_fsm_t *s, nrf_event_t *e)
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{
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bool handled;
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ogs_sbi_nf_instance_t *nf_instance = NULL;
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ogs_sbi_stream_t *stream = NULL;
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ogs_sbi_message_t *message = NULL;
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ogs_sbi_response_t *response = NULL;
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ogs_assert(s);
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ogs_assert(e);
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nrf_sm_debug(e);
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nf_instance = e->nf_instance;
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ogs_assert(nf_instance);
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switch (e->id) {
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case OGS_FSM_ENTRY_SIG:
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ogs_info("[%s] NF registred [Heartbeat:%ds]",
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nf_instance->id, nf_instance->time.heartbeat_interval);
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if (nf_instance->time.heartbeat_interval) {
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ogs_timer_start(nf_instance->t_no_heartbeat,
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ogs_time_from_sec(
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nf_instance->time.heartbeat_interval +
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ogs_app()->time.nf_instance.no_heartbeat_margin));
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}
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ogs_assert(true ==
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nrf_nnrf_nfm_send_nf_status_notify_all(
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OpenAPI_notification_event_type_NF_REGISTERED, nf_instance));
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break;
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case OGS_FSM_EXIT_SIG:
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ogs_info("[%s] NF de-registered", nf_instance->id);
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if (nf_instance->time.heartbeat_interval) {
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ogs_timer_stop(nf_instance->t_no_heartbeat);
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}
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ogs_assert(true ==
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nrf_nnrf_nfm_send_nf_status_notify_all(
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OpenAPI_notification_event_type_NF_DEREGISTERED, nf_instance));
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break;
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case NRF_EVT_SBI_SERVER:
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message = e->sbi.message;
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ogs_assert(message);
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stream = e->sbi.data;
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ogs_assert(stream);
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SWITCH(message->h.service.name)
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CASE(OGS_SBI_SERVICE_NAME_NNRF_NFM)
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SWITCH(message->h.resource.component[0])
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CASE(OGS_SBI_RESOURCE_NAME_NF_INSTANCES)
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SWITCH(message->h.method)
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CASE(OGS_SBI_HTTP_METHOD_PUT)
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CASE(OGS_SBI_HTTP_METHOD_PATCH)
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if (nf_instance->time.heartbeat_interval) {
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ogs_timer_start(nf_instance->t_no_heartbeat,
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ogs_time_from_sec(
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nf_instance->time.heartbeat_interval +
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ogs_app()->time.nf_instance.
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no_heartbeat_margin));
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}
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handled = nrf_nnrf_handle_nf_update(
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nf_instance, stream, message);
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if (handled == false)
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OGS_FSM_TRAN(s, nrf_nf_state_exception);
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break;
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CASE(OGS_SBI_HTTP_METHOD_DELETE)
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response = ogs_sbi_build_response(
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message, OGS_SBI_HTTP_STATUS_NO_CONTENT);
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ogs_assert(response);
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ogs_assert(true ==
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ogs_sbi_server_send_response(stream, response));
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OGS_FSM_TRAN(s, nrf_nf_state_de_registered);
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break;
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DEFAULT
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ogs_error("[%s] Invalid HTTP method [%s]",
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nf_instance->id, message->h.method);
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ogs_assert(true ==
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ogs_sbi_server_send_error(stream,
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OGS_SBI_HTTP_STATUS_MEHTOD_NOT_ALLOWED, message,
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"Invalid HTTP method", message->h.method));
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END
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break;
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DEFAULT
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ogs_error("[%s] Invalid resource name [%s]",
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nf_instance->id, message->h.resource.component[0]);
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ogs_assert(true ==
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ogs_sbi_server_send_error(stream,
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OGS_SBI_HTTP_STATUS_MEHTOD_NOT_ALLOWED, message,
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"Invalid resource name",
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message->h.resource.component[0]));
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END
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break;
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DEFAULT
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ogs_error("[%s] Invalid API name [%s]",
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nf_instance->id, message->h.service.name);
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ogs_assert(true ==
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ogs_sbi_server_send_error(stream,
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OGS_SBI_HTTP_STATUS_MEHTOD_NOT_ALLOWED, message,
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"Invalid resource name", message->h.service.name));
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END
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break;
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default:
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ogs_error("[%s] Unknown event %s",
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nf_instance->id, nrf_event_get_name(e));
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ogs_assert(true ==
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ogs_sbi_server_send_error(stream,
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OGS_SBI_HTTP_STATUS_INTERNAL_SERVER_ERROR,
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message, "Unknown event", nrf_event_get_name(e)));
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OGS_FSM_TRAN(s, nrf_nf_state_exception);
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break;
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}
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}
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void nrf_nf_state_de_registered(ogs_fsm_t *s, nrf_event_t *e)
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{
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ogs_assert(s);
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ogs_assert(e);
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nrf_sm_debug(e);
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switch (e->id) {
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case OGS_FSM_ENTRY_SIG:
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break;
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case OGS_FSM_EXIT_SIG:
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break;
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default:
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ogs_error("Unknown event %s", nrf_event_get_name(e));
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break;
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}
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}
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void nrf_nf_state_exception(ogs_fsm_t *s, nrf_event_t *e)
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{
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ogs_assert(s);
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ogs_assert(e);
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nrf_sm_debug(e);
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switch (e->id) {
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case OGS_FSM_ENTRY_SIG:
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break;
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case OGS_FSM_EXIT_SIG:
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break;
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default:
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ogs_error("Unknown event %s", nrf_event_get_name(e));
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break;
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}
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}
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