457 lines
14 KiB
C
457 lines
14 KiB
C
/*
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* Copyright (C) 2019-2022 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 "ogs-sbi.h"
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void ogs_sbi_nf_fsm_init(ogs_sbi_nf_instance_t *nf_instance)
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{
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ogs_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.sbi.data = nf_instance;
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ogs_fsm_init(&nf_instance->sm,
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ogs_sbi_nf_state_initial, ogs_sbi_nf_state_final, &e);
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}
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void ogs_sbi_nf_fsm_tran(ogs_sbi_nf_instance_t *nf_instance, void *state)
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{
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ogs_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.sbi.data = nf_instance;
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ogs_fsm_tran(&nf_instance->sm, state, &e);
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}
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void ogs_sbi_nf_fsm_fini(ogs_sbi_nf_instance_t *nf_instance)
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{
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ogs_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.sbi.data = nf_instance;
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ogs_fsm_fini(&nf_instance->sm, &e);
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}
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void ogs_sbi_nf_state_initial(ogs_fsm_t *s, ogs_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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ogs_sbi_sm_debug(e);
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nf_instance = e->sbi.data;
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ogs_assert(nf_instance);
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nf_instance->t_registration_interval = ogs_timer_add(ogs_app()->timer_mgr,
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ogs_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(ogs_app()->timer_mgr,
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ogs_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_no_heartbeat = ogs_timer_add(ogs_app()->timer_mgr,
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ogs_timer_nf_instance_no_heartbeat, nf_instance);
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ogs_assert(nf_instance->t_no_heartbeat);
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nf_instance->t_validity = ogs_timer_add(ogs_app()->timer_mgr,
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ogs_timer_nf_instance_validity, nf_instance);
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ogs_assert(nf_instance->t_validity);
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if (NF_INSTANCE_TYPE_IS_NRF(nf_instance)) {
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OGS_FSM_TRAN(s, &ogs_sbi_nf_state_will_register);
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} else {
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ogs_assert(nf_instance->id);
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OGS_FSM_TRAN(s, &ogs_sbi_nf_state_registered);
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}
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}
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void ogs_sbi_nf_state_final(ogs_fsm_t *s, ogs_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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ogs_sbi_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_no_heartbeat);
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ogs_timer_delete(nf_instance->t_validity);
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}
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void ogs_sbi_nf_state_will_register(ogs_fsm_t *s, ogs_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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ogs_sbi_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(ogs_sbi_self()->nf_instance);
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ogs_assert(NF_INSTANCE_TYPE_IS_NRF(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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ogs_app()->time.message.sbi.nf_register_interval);
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ogs_assert(true == ogs_nnrf_nfm_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 OGS_EVENT_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_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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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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ogs_sbi_nnrf_handle_nf_register(nf_instance, message);
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OGS_FSM_TRAN(s, &ogs_sbi_nf_state_registered);
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} else {
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ogs_error("[%s] HTTP Response Status Code [%d]",
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ogs_sbi_self()->nf_instance->id,
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message->res_status);
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OGS_FSM_TRAN(s, &ogs_sbi_nf_state_exception);
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}
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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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ogs_sbi_self()->nf_instance->id,
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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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ogs_sbi_self()->nf_instance->id, message->h.service.name);
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END
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break;
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case OGS_EVENT_SBI_TIMER:
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switch(e->timer_id) {
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case OGS_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->node.addr;
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ogs_assert(addr);
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ogs_warn("[%s] Retry to registration with NRF",
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ogs_sbi_self()->nf_instance->id);
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ogs_timer_start(nf_instance->t_registration_interval,
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ogs_app()->time.message.sbi.nf_register_interval);
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ogs_assert(true == ogs_nnrf_nfm_send_nf_register(nf_instance));
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break;
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default:
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ogs_error("[%s] Unknown timer[%s:%d]",
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ogs_sbi_self()->nf_instance->id,
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ogs_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", ogs_event_get_name(e));
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break;
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}
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}
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void ogs_sbi_nf_state_registered(ogs_fsm_t *s, ogs_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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ogs_sbi_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(ogs_sbi_self()->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_TYPE_IS_NRF(nf_instance)) {
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int i;
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ogs_info("[%s] NF registered [Heartbeat:%ds]",
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ogs_sbi_self()->nf_instance->id,
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nf_instance->time.heartbeat_interval);
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client = nf_instance->client;
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ogs_assert(client);
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if (nf_instance->time.heartbeat_interval) {
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ogs_timer_start(nf_instance->t_heartbeat_interval,
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ogs_time_from_sec(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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for (i = 0;
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i < ogs_sbi_self()->num_of_to_be_notified_nf_type; i++) {
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ogs_assert(true ==
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ogs_nnrf_nfm_send_nf_status_subscribe(client,
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ogs_sbi_self()->nf_instance->nf_type,
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ogs_sbi_self()->nf_instance->id,
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ogs_sbi_self()->to_be_notified_nf_type[i]));
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}
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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_TYPE_IS_NRF(nf_instance)) {
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ogs_info("[%s] NF de-registered", ogs_sbi_self()->nf_instance->id);
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if (nf_instance->time.heartbeat_interval) {
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ogs_timer_stop(nf_instance->t_heartbeat_interval);
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ogs_timer_stop(nf_instance->t_no_heartbeat);
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}
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if (!OGS_FSM_CHECK(&nf_instance->sm, ogs_sbi_nf_state_exception)) {
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ogs_assert(true ==
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ogs_nnrf_nfm_send_nf_de_register(nf_instance));
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}
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}
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break;
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case OGS_EVENT_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_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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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_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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} else {
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ogs_warn("[%s] HTTP response error [%d]",
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ogs_sbi_self()->nf_instance->id,
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message->res_status);
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OGS_FSM_TRAN(s, &ogs_sbi_nf_state_exception);
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}
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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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ogs_sbi_self()->nf_instance->id,
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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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ogs_sbi_self()->nf_instance->id, message->h.service.name);
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END
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break;
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case OGS_EVENT_SBI_TIMER:
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switch(e->timer_id) {
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case OGS_TIMER_NF_INSTANCE_HEARTBEAT_INTERVAL:
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if (nf_instance->time.heartbeat_interval)
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ogs_timer_start(nf_instance->t_heartbeat_interval,
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ogs_time_from_sec(nf_instance->time.heartbeat_interval));
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ogs_assert(true == ogs_nnrf_nfm_send_nf_update(nf_instance));
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break;
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case OGS_TIMER_NF_INSTANCE_NO_HEARTBEAT:
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ogs_error("[%s] No heartbeat", ogs_sbi_self()->nf_instance->id);
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OGS_FSM_TRAN(s, &ogs_sbi_nf_state_will_register);
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break;
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case OGS_TIMER_NF_INSTANCE_VALIDITY:
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ogs_assert(!NF_INSTANCE_TYPE_IS_NRF(nf_instance));
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ogs_assert(nf_instance->id);
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ogs_info("[%s] NF expired", nf_instance->id);
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OGS_FSM_TRAN(s, &ogs_sbi_nf_state_de_registered);
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break;
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default:
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ogs_error("[%s:%s] Unknown timer[%s:%d]",
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OpenAPI_nf_type_ToString(nf_instance->nf_type),
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nf_instance->id ? nf_instance->id : "Undefined",
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ogs_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("[%s:%s] Unknown event %s",
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OpenAPI_nf_type_ToString(nf_instance->nf_type),
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nf_instance->id ? nf_instance->id : "Undefined",
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ogs_event_get_name(e));
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break;
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}
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}
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void ogs_sbi_nf_state_de_registered(ogs_fsm_t *s, ogs_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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ogs_sbi_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(ogs_sbi_self()->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_TYPE_IS_NRF(nf_instance)) {
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ogs_info("[%s] NF de-registered", ogs_sbi_self()->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("[%s:%s] Unknown event %s",
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OpenAPI_nf_type_ToString(nf_instance->nf_type),
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nf_instance->id ? nf_instance->id : "Undefined",
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ogs_event_get_name(e));
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break;
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}
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}
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void ogs_sbi_nf_state_exception(ogs_fsm_t *s, ogs_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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ogs_sbi_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(ogs_sbi_self()->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_TYPE_IS_NRF(nf_instance)) {
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ogs_timer_start(nf_instance->t_registration_interval,
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ogs_app()->time.message.sbi.
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nf_register_interval_in_exception);
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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_TYPE_IS_NRF(nf_instance)) {
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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 OGS_EVENT_SBI_TIMER:
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switch(e->timer_id) {
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case OGS_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->node.addr;
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ogs_assert(addr);
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ogs_warn("[%s] Retry to registration with NRF",
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ogs_sbi_self()->nf_instance->id);
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OGS_FSM_TRAN(s, &ogs_sbi_nf_state_will_register);
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break;
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default:
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ogs_error("[%s:%s] Unknown timer[%s:%d]",
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OpenAPI_nf_type_ToString(nf_instance->nf_type),
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nf_instance->id ? nf_instance->id : "Undefined",
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ogs_timer_get_name(e->timer_id), e->timer_id);
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}
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break;
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case OGS_EVENT_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_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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break;
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DEFAULT
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ogs_error("Invalid resource name [%s]",
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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("Invalid API name [%s]", 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:%s] Unknown event %s",
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OpenAPI_nf_type_ToString(nf_instance->nf_type),
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nf_instance->id ? nf_instance->id : "Undefined",
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ogs_event_get_name(e));
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break;
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}
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}
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