222 lines
5.4 KiB
C
222 lines
5.4 KiB
C
/*
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* Copyright (C) 2019-2023 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 <mongoc.h>
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#include "ogs-dbi.h"
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int __ogs_dbi_domain;
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static ogs_mongoc_t self;
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/*
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* We've added it
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* Because the following function is deprecated in the mongo-c-driver
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*/
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static bool
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ogs_mongoc_mongoc_client_get_server_status (mongoc_client_t *client, /* IN */
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mongoc_read_prefs_t *read_prefs, /* IN */
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bson_t *reply, /* OUT */
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bson_error_t *error) /* OUT */
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{
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bson_t cmd = BSON_INITIALIZER;
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bool ret = false;
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BSON_ASSERT (client);
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BSON_APPEND_INT32 (&cmd, "ping", 1);
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ret = mongoc_client_command_simple (
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client, "admin", &cmd, read_prefs, reply, error);
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bson_destroy (&cmd);
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return ret;
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}
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static char *masked_db_uri(const char *db_uri)
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{
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char *tmp;
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char *array[2], *saveptr = NULL;
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char *masked = NULL;
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ogs_assert(db_uri);
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tmp = ogs_strdup(db_uri);
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ogs_assert(tmp);
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memset(array, 0, sizeof(array));
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array[0] = ogs_strtok_r(tmp, "@", &saveptr);
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if (array[0])
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array[1] = ogs_strtok_r(NULL, "@", &saveptr);
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if (array[1]) {
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masked = ogs_msprintf("mongodb://*****:*****@%s", array[1]);
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ogs_assert(masked);
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} else {
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masked = ogs_strdup(array[0]);
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ogs_assert(masked);
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}
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ogs_free(tmp);
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return masked;
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}
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int ogs_mongoc_init(const char *db_uri)
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{
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bson_t reply;
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bson_error_t error;
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bson_iter_t iter;
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const mongoc_uri_t *uri;
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if (!db_uri) {
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ogs_error("No DB_URI");
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return OGS_ERROR;
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}
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memset(&self, 0, sizeof(ogs_mongoc_t));
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self.masked_db_uri = masked_db_uri(db_uri);
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mongoc_init();
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self.initialized = true;
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self.client = mongoc_client_new(db_uri);
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if (!self.client) {
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ogs_error("Failed to parse DB URI [%s]", self.masked_db_uri);
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return OGS_ERROR;
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}
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#if MONGOC_MAJOR_VERSION >= 1 && MONGOC_MINOR_VERSION >= 4
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mongoc_client_set_error_api(self.client, 2);
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#endif
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uri = mongoc_client_get_uri(self.client);
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ogs_assert(uri);
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self.name = mongoc_uri_get_database(uri);
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ogs_assert(self.name);
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self.database = mongoc_client_get_database(self.client, self.name);
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ogs_assert(self.database);
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if (!ogs_mongoc_mongoc_client_get_server_status(
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self.client, NULL, &reply, &error)) {
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ogs_warn("Failed to connect to server [%s]", self.masked_db_uri);
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return OGS_RETRY;
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}
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ogs_assert(bson_iter_init_find(&iter, &reply, "ok"));
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bson_destroy(&reply);
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ogs_info("MongoDB URI: '%s'", self.masked_db_uri);
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return OGS_OK;
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}
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void ogs_mongoc_final(void)
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{
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if (self.database) {
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mongoc_database_destroy(self.database);
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self.database = NULL;
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}
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if (self.client) {
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mongoc_client_destroy(self.client);
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self.client = NULL;
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}
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if (self.masked_db_uri) {
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ogs_free(self.masked_db_uri);
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self.masked_db_uri = NULL;
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}
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if (self.initialized) {
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mongoc_cleanup();
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self.initialized = false;
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}
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}
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ogs_mongoc_t *ogs_mongoc(void)
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{
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return &self;
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}
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int ogs_dbi_init(const char *db_uri)
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{
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int rv;
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ogs_assert(db_uri);
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rv = ogs_mongoc_init(db_uri);
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if (rv != OGS_OK) return rv;
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if (ogs_mongoc()->client && ogs_mongoc()->name) {
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self.collection.subscriber = mongoc_client_get_collection(
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ogs_mongoc()->client, ogs_mongoc()->name, "subscribers");
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ogs_assert(self.collection.subscriber);
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}
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return OGS_OK;
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}
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void ogs_dbi_final(void)
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{
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if (self.collection.subscriber) {
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mongoc_collection_destroy(self.collection.subscriber);
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}
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#if MONGOC_MAJOR_VERSION >= 1 && MONGOC_MINOR_VERSION >= 9
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if (self.stream) {
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mongoc_change_stream_destroy(self.stream);
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}
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#endif
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ogs_mongoc_final();
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}
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int ogs_dbi_collection_watch_init(void)
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{
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#if MONGOC_MAJOR_VERSION >= 1 && MONGOC_MINOR_VERSION >= 9
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bson_t empty = BSON_INITIALIZER;
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const bson_t *err_doc;
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bson_error_t error;
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bson_t *options = BCON_NEW("fullDocument", "updateLookup");
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ogs_mongoc()->stream = mongoc_collection_watch(self.collection.subscriber,
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&empty, options);
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if (mongoc_change_stream_error_document(ogs_mongoc()->stream, &error,
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&err_doc)) {
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if (!bson_empty (err_doc)) {
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ogs_error("Change Stream Error. Enable replica sets to "
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"enable database updates to be sent to MME.");
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} else {
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ogs_error("Client Error: %s\n", error.message);
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}
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return OGS_ERROR;
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} else {
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ogs_info("Change Streams are Enabled.");
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}
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return OGS_OK;
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# else
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return OGS_ERROR;
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#endif
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}
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