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			266 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			266 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
/*
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 * Copyright (C) 2022 by sysmocom - s.f.m.c. GmbH <info@sysmocom.de>
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 * Copyright (C) 2023 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-metrics.h"
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#define DEFAULT_PROMETHEUS_HTTP_PORT       9090
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int __ogs_metrics_domain;
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static ogs_metrics_context_t self;
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static int context_initialized = 0;
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void ogs_metrics_context_init(void)
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{
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    ogs_assert(context_initialized == 0);
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    ogs_log_install_domain(&__ogs_metrics_domain, "metrics", ogs_core()->log.level);
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    /* Initialize METRICS context */
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    memset(&self, 0, sizeof(ogs_metrics_context_t));
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    ogs_metrics_spec_init(ogs_metrics_self());
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    ogs_metrics_server_init(ogs_metrics_self());
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    context_initialized = 1;
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}
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void ogs_metrics_context_open(ogs_metrics_context_t *ctx)
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{
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    ogs_metrics_server_open(ctx);
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}
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void ogs_metrics_context_close(ogs_metrics_context_t *ctx)
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{
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    ogs_metrics_server_close(ctx);
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}
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void ogs_metrics_context_final(void)
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{
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    ogs_assert(context_initialized == 1);
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    ogs_metrics_spec_final(ogs_metrics_self());
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    ogs_metrics_server_final(ogs_metrics_self());
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    context_initialized = 0;
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}
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ogs_metrics_context_t *ogs_metrics_self(void)
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{
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    return &self;
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}
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static int ogs_metrics_context_prepare(void)
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{
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    self.metrics_port = DEFAULT_PROMETHEUS_HTTP_PORT;
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    return OGS_OK;
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}
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int ogs_metrics_context_parse_config(const char *local)
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{
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    int rv;
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    yaml_document_t *document = NULL;
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    ogs_yaml_iter_t root_iter;
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    int idx = 0;
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    document = ogs_app()->document;
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    ogs_assert(document);
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    rv = ogs_metrics_context_prepare();
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    if (rv != OGS_OK) return rv;
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    ogs_yaml_iter_init(&root_iter, document);
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    while (ogs_yaml_iter_next(&root_iter)) {
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        const char *root_key = ogs_yaml_iter_key(&root_iter);
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        ogs_assert(root_key);
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        if (local && !strcmp(root_key, local) &&
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            (idx++ == ogs_app()->config_section_id)) {
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            ogs_yaml_iter_t local_iter;
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            ogs_yaml_iter_recurse(&root_iter, &local_iter);
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            while (ogs_yaml_iter_next(&local_iter)) {
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                const char *local_key = ogs_yaml_iter_key(&local_iter);
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                ogs_assert(local_key);
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                if (!strcmp(local_key, "metrics")) {
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                    ogs_yaml_iter_t metrics_iter;
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                    ogs_yaml_iter_recurse(&local_iter, &metrics_iter);
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                    while (ogs_yaml_iter_next(&metrics_iter)) {
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                        const char *metrics_key =
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                            ogs_yaml_iter_key(&metrics_iter);
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                        ogs_assert(metrics_key);
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                        if (!strcmp(metrics_key, "server")) {
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                            ogs_list_t list, list6;
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                            ogs_socknode_t *node = NULL, *node6 = NULL;
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                            ogs_yaml_iter_t server_iter, server_array;
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                            ogs_yaml_iter_recurse(&metrics_iter, &server_array);
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                            do {
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                                int i, family = AF_UNSPEC;
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                                int num = 0;
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                                const char *hostname[OGS_MAX_NUM_OF_HOSTNAME];
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                                uint16_t port = self.metrics_port;
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                                const char *dev = NULL;
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                                ogs_sockaddr_t *addr = NULL;
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                                ogs_sockopt_t option;
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                                bool is_option = false;
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                                if (ogs_yaml_iter_type(&server_array) ==
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                                        YAML_MAPPING_NODE) {
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                                    memcpy(&server_iter, &server_array,
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                                            sizeof(ogs_yaml_iter_t));
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                                } else if (ogs_yaml_iter_type(&server_array) ==
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                                    YAML_SEQUENCE_NODE) {
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                                    if (!ogs_yaml_iter_next(&server_array))
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                                        break;
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                                    ogs_yaml_iter_recurse(
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                                            &server_array, &server_iter);
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                                } else if (ogs_yaml_iter_type(&server_array) ==
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                                    YAML_SCALAR_NODE) {
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                                    break;
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                                } else
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                                    ogs_assert_if_reached();
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                                while (ogs_yaml_iter_next(&server_iter)) {
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                                    const char *server_key =
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                                        ogs_yaml_iter_key(&server_iter);
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                                    ogs_assert(server_key);
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                                    if (!strcmp(server_key, "family")) {
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                                        const char *v = ogs_yaml_iter_value(
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                                                &server_iter);
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                                        if (v) family = atoi(v);
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                                        if (family != AF_UNSPEC &&
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                                            family != AF_INET &&
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                                            family != AF_INET6) {
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                                            ogs_warn("Ignore family(%d) : "
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                                                "AF_UNSPEC(%d), "
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                                                "AF_INET(%d), AF_INET6(%d) ",
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                                                family,
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                                                AF_UNSPEC, AF_INET, AF_INET6);
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                                            family = AF_UNSPEC;
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                                        }
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                                    } else if (!strcmp(server_key, "address")) {
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                                        ogs_yaml_iter_t hostname_iter;
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                                        ogs_yaml_iter_recurse(&server_iter,
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                                                &hostname_iter);
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                                        ogs_assert(ogs_yaml_iter_type(
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                                                    &hostname_iter) !=
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                                                YAML_MAPPING_NODE);
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                                        do {
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                                            if (ogs_yaml_iter_type(
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                                                        &hostname_iter) ==
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                                                    YAML_SEQUENCE_NODE) {
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                                                if (!ogs_yaml_iter_next(
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                                                            &hostname_iter))
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                                                    break;
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                                            }
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                                            ogs_assert(num <
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                                                    OGS_MAX_NUM_OF_HOSTNAME);
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                                            hostname[num++] =
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                                                ogs_yaml_iter_value(
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                                                        &hostname_iter);
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                                        } while (ogs_yaml_iter_type(
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                                                    &hostname_iter) ==
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                                                YAML_SEQUENCE_NODE);
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                                    } else if (!strcmp(server_key, "port")) {
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                                        const char *v = ogs_yaml_iter_value(
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                                                &server_iter);
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                                        if (v)
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                                            port = atoi(v);
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                                    } else if (!strcmp(server_key, "dev")) {
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                                        dev = ogs_yaml_iter_value(&server_iter);
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                                    } else if (!strcmp(server_key, "option")) {
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                                        rv = ogs_app_parse_sockopt_config(
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                                                &server_iter, &option);
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                                        if (rv != OGS_OK) {
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                                            ogs_error("ogs_app_parse_sockopt_"
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                                                    "config() failed");
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                                            return rv;
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                                        }
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                                        is_option = true;
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                                    } else
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                                        ogs_warn("unknown key `%s`",
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                                                server_key);
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                                }
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                                addr = NULL;
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                                for (i = 0; i < num; i++) {
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                                    rv = ogs_addaddrinfo(&addr,
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                                            family, hostname[i], port, 0);
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                                    ogs_assert(rv == OGS_OK);
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                                }
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                                ogs_list_init(&list);
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                                ogs_list_init(&list6);
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                                if (addr) {
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                                    if (ogs_global_conf()->parameter.no_ipv4 == 0)
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                                        ogs_socknode_add(
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                                            &list, AF_INET, addr, NULL);
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                                    if (ogs_global_conf()->parameter.no_ipv6 == 0)
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                                        ogs_socknode_add(
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                                            &list6, AF_INET6, addr, NULL);
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                                    ogs_freeaddrinfo(addr);
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                                }
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                                if (dev) {
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                                    rv = ogs_socknode_probe(
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                                        ogs_global_conf()->parameter.no_ipv4 ?
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                                        NULL : &list,
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                                        ogs_global_conf()->parameter.no_ipv6 ?
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                                        NULL : &list6,
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                                        dev, port, NULL);
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                                    ogs_assert(rv == OGS_OK);
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                                }
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                                node = ogs_list_first(&list);
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                                if (node) {
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                                    ogs_metrics_server_t *server =
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                                        ogs_metrics_server_add(
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                                            node->addr,
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                                            is_option ? &option : NULL);
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                                    ogs_assert(server);
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                                }
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                                node6 = ogs_list_first(&list6);
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                                if (node6) {
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                                    ogs_metrics_server_t *server =
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                                        ogs_metrics_server_add(
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                                            node6->addr,
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                                            is_option ? &option : NULL);
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                                    ogs_assert(server);
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                                }
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                                ogs_socknode_remove_all(&list);
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                                ogs_socknode_remove_all(&list6);
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                            } while (ogs_yaml_iter_type(&server_array) ==
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                                    YAML_SEQUENCE_NODE);
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                        } else
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                            ogs_warn("unknown key `%s`", metrics_key);
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                    }
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                }
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            }
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        }
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    }
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    return OGS_OK;
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}
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