forked from acouzens/open5gs
385 lines
11 KiB
C
385 lines
11 KiB
C
/*
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* Copyright (C) 2019,2020 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 amf_nf_fsm_init(ogs_sbi_nf_instance_t *nf_instance)
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{
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amf_event_t e;
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ogs_assert(nf_instance);
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e.sbi.data = nf_instance;
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ogs_fsm_create(&nf_instance->sm,
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amf_nf_state_initial, amf_nf_state_final);
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ogs_fsm_init(&nf_instance->sm, &e);
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}
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void amf_nf_fsm_fini(ogs_sbi_nf_instance_t *nf_instance)
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{
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amf_event_t e;
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ogs_assert(nf_instance);
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e.sbi.data = 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 amf_nf_state_initial(ogs_fsm_t *s, amf_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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amf_sm_debug(e);
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nf_instance = e->sbi.data;
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ogs_assert(nf_instance);
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ogs_assert(nf_instance->id);
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nf_instance->t_registration_interval = ogs_timer_add(amf_self()->timer_mgr,
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amf_timer_nf_instance_registration_interval, nf_instance);
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ogs_assert(nf_instance->t_registration_interval);
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nf_instance->t_heartbeat_interval = ogs_timer_add(amf_self()->timer_mgr,
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amf_timer_nf_instance_heartbeat_interval, nf_instance);
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ogs_assert(nf_instance->t_heartbeat_interval);
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nf_instance->t_heartbeat = ogs_timer_add(amf_self()->timer_mgr,
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amf_timer_nf_instance_heartbeat, nf_instance);
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ogs_assert(nf_instance->t_heartbeat);
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nf_instance->t_validity = ogs_timer_add(amf_self()->timer_mgr,
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amf_timer_nf_instance_validity, nf_instance);
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ogs_assert(nf_instance->t_validity);
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if (NF_INSTANCE_IS_SELF(nf_instance->id)) {
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OGS_FSM_TRAN(s, &amf_nf_state_will_register);
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} else {
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OGS_FSM_TRAN(s, &amf_nf_state_registered);
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}
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}
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void amf_nf_state_final(ogs_fsm_t *s, amf_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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amf_sm_debug(e);
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nf_instance = e->sbi.data;
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ogs_assert(nf_instance);
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ogs_timer_delete(nf_instance->t_registration_interval);
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ogs_timer_delete(nf_instance->t_heartbeat_interval);
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ogs_timer_delete(nf_instance->t_heartbeat);
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ogs_timer_delete(nf_instance->t_validity);
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}
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void amf_nf_state_will_register(ogs_fsm_t *s, amf_event_t *e)
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{
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ogs_sbi_nf_instance_t *nf_instance = NULL;
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ogs_sbi_client_t *client = NULL;
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ogs_sbi_message_t *message = NULL;
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ogs_sockaddr_t *addr = NULL;
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ogs_assert(s);
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ogs_assert(e);
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amf_sm_debug(e);
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nf_instance = e->sbi.data;
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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_timer_start(nf_instance->t_registration_interval,
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amf_timer_cfg(AMF_TIMER_NF_INSTANCE_REGISTRATION_INTERVAL)->
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duration);
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amf_sbi_send_nf_register(nf_instance);
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break;
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case OGS_FSM_EXIT_SIG:
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ogs_timer_stop(nf_instance->t_registration_interval);
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break;
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case AMF_EVT_SBI_CLIENT:
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message = e->sbi.message;
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ogs_assert(message);
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SWITCH(message->h.service.name)
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CASE(OGS_SBI_SERVICE_NAME_NRF_NFM)
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SWITCH(message->h.resource.name)
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CASE(OGS_SBI_RESOURCE_NAME_NF_INSTANCES)
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if (message->res_status == OGS_SBI_HTTP_STATUS_OK ||
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message->res_status == OGS_SBI_HTTP_STATUS_CREATED) {
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amf_nnrf_handle_nf_register(nf_instance, message);
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OGS_FSM_TRAN(s, &amf_nf_state_registered);
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} else {
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ogs_error("HTTP Response Status Code [%d]",
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message->res_status);
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OGS_FSM_TRAN(s, &amf_nf_state_exception);
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}
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break;
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DEFAULT
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ogs_error("Invalid resource name [%s]",
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message->h.resource.name);
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END
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break;
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DEFAULT
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ogs_error("Invalid API name [%s]", message->h.service.name);
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END
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break;
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case AMF_EVT_SBI_TIMER:
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switch(e->timer_id) {
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case AMF_TIMER_NF_INSTANCE_REGISTRATION_INTERVAL:
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client = nf_instance->client;
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ogs_assert(client);
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addr = client->addr;
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ogs_assert(addr);
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ogs_warn("Retry to registration with NRF [%s]", nf_instance->id);
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ogs_timer_start(nf_instance->t_registration_interval,
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amf_timer_cfg(AMF_TIMER_NF_INSTANCE_REGISTRATION_INTERVAL)->
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duration);
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amf_sbi_send_nf_register(nf_instance);
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break;
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default:
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ogs_error("Unknown timer[%s:%d]",
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amf_timer_get_name(e->timer_id), e->timer_id);
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}
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break;
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default:
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ogs_error("Unknown event %s", amf_event_get_name(e));
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break;
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}
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}
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void amf_nf_state_registered(ogs_fsm_t *s, amf_event_t *e)
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{
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ogs_sbi_nf_instance_t *nf_instance = NULL;
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ogs_sbi_client_t *client = 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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amf_sm_debug(e);
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nf_instance = e->sbi.data;
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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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if (NF_INSTANCE_IS_SELF(nf_instance->id)) {
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ogs_info("NF registered [%s]", nf_instance->id);
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client = nf_instance->client;
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ogs_assert(client);
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if (nf_instance->time.heartbeat) {
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ogs_timer_start(nf_instance->t_heartbeat_interval,
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ogs_time_from_sec(nf_instance->time.heartbeat));
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ogs_timer_start(nf_instance->t_heartbeat,
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ogs_time_from_sec(nf_instance->time.heartbeat *
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OGS_SBI_HEARTBEAT_RETRYCOUNT));
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}
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amf_sbi_send_nf_status_subscribe(client,
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amf_self()->nf_type, nf_instance->id);
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}
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break;
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case OGS_FSM_EXIT_SIG:
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if (NF_INSTANCE_IS_SELF(nf_instance->id)) {
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ogs_info("NF de-registered [%s]", nf_instance->id);
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if (nf_instance->time.heartbeat) {
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ogs_timer_stop(nf_instance->t_heartbeat_interval);
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ogs_timer_stop(nf_instance->t_heartbeat);
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}
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amf_sbi_send_nf_de_register(nf_instance);
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}
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break;
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case AMF_EVT_SBI_CLIENT:
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message = e->sbi.message;
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ogs_assert(message);
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SWITCH(message->h.service.name)
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CASE(OGS_SBI_SERVICE_NAME_NRF_NFM)
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SWITCH(message->h.resource.name)
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CASE(OGS_SBI_RESOURCE_NAME_NF_INSTANCES)
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if (message->res_status == OGS_SBI_HTTP_STATUS_NO_CONTENT ||
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message->res_status == OGS_SBI_HTTP_STATUS_OK) {
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if (nf_instance->time.heartbeat)
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ogs_timer_start(nf_instance->t_heartbeat,
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ogs_time_from_sec(nf_instance->time.heartbeat *
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OGS_SBI_HEARTBEAT_RETRYCOUNT));
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} else {
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ogs_error("HTTP response error : %d", message->res_status);
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}
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break;
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DEFAULT
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ogs_error("Invalid resource name [%s]",
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message->h.resource.name);
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END
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break;
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DEFAULT
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ogs_error("Invalid API name [%s]", message->h.service.name);
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END
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break;
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case AMF_EVT_SBI_TIMER:
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switch(e->timer_id) {
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case AMF_TIMER_NF_INSTANCE_HEARTBEAT_INTERVAL:
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if (nf_instance->time.heartbeat) {
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ogs_timer_start(nf_instance->t_heartbeat_interval,
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ogs_time_from_sec(nf_instance->time.heartbeat));
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}
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amf_sbi_send_nf_update(nf_instance);
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break;
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case AMF_TIMER_NF_INSTANCE_HEARTBEAT:
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OGS_FSM_TRAN(s, &amf_nf_state_will_register);
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break;
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case AMF_TIMER_NF_INSTANCE_VALIDITY:
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if (NF_INSTANCE_IS_OTHERS(nf_instance->id)) {
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ogs_info("NF expired [%s]", nf_instance->id);
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OGS_FSM_TRAN(s, &amf_nf_state_de_registered);
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}
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break;
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default:
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ogs_error("Unknown timer[%s:%d]",
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amf_timer_get_name(e->timer_id), e->timer_id);
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break;
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}
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break;
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default:
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ogs_error("Unknown event %s", amf_event_get_name(e));
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break;
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}
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}
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void amf_nf_state_de_registered(ogs_fsm_t *s, amf_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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amf_sm_debug(e);
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nf_instance = e->sbi.data;
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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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if (NF_INSTANCE_IS_SELF(nf_instance->id)) {
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ogs_info("NF de-registered [%s]", nf_instance->id);
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}
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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", amf_event_get_name(e));
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break;
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}
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}
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void amf_nf_state_exception(ogs_fsm_t *s, amf_event_t *e)
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{
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ogs_sbi_nf_instance_t *nf_instance = NULL;
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ogs_sbi_client_t *client = NULL;
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ogs_sockaddr_t *addr = NULL;
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ogs_assert(s);
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ogs_assert(e);
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amf_sm_debug(e);
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nf_instance = e->sbi.data;
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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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if (NF_INSTANCE_IS_SELF(nf_instance->id)) {
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ogs_timer_start(nf_instance->t_registration_interval,
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amf_timer_cfg(AMF_TIMER_NF_INSTANCE_REGISTRATION_INTERVAL)->
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duration);
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}
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break;
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case OGS_FSM_EXIT_SIG:
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if (NF_INSTANCE_IS_SELF(nf_instance->id)) {
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ogs_timer_stop(nf_instance->t_registration_interval);
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}
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break;
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case AMF_EVT_SBI_TIMER:
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switch(e->timer_id) {
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case AMF_TIMER_NF_INSTANCE_REGISTRATION_INTERVAL:
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client = nf_instance->client;
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ogs_assert(client);
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addr = client->addr;
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ogs_assert(addr);
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ogs_warn("Retry to registration with NRF [%s]", nf_instance->id);
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OGS_FSM_TRAN(s, &amf_nf_state_will_register);
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break;
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default:
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ogs_error("Unknown timer[%s:%d]",
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amf_timer_get_name(e->timer_id), e->timer_id);
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break;
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}
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break;
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default:
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ogs_error("Unknown event %s", amf_event_get_name(e));
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break;
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}
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}
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