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// SPDX-License-Identifier: GPL-3.0-or-later
#define BACKENDS_INTERNALS
#include "mongodb.h"
#include <mongoc.h>
#define CONFIG_FILE_LINE_MAX ((CONFIG_MAX_NAME + CONFIG_MAX_VALUE + 1024) * 2)
mongoc_client_t *mongodb_client;
mongoc_collection_t *mongodb_collection;
int mongodb_init(const char *uri_string,
const char *database_string,
const char *collection_string,
int32_t default_socket_timeout) {
mongoc_uri_t *uri;
bson_error_t error;
mongoc_init();
uri = mongoc_uri_new_with_error(uri_string, &error);
if(unlikely(!uri)) {
error("BACKEND: failed to parse URI: %s. Error message: %s", uri_string, error.message);
return 1;
}
int32_t socket_timeout = mongoc_uri_get_option_as_int32(uri, MONGOC_URI_SOCKETTIMEOUTMS, default_socket_timeout);
if(!mongoc_uri_set_option_as_int32(uri, MONGOC_URI_SOCKETTIMEOUTMS, socket_timeout)) {
error("BACKEND: failed to set %s to the value %d", MONGOC_URI_SOCKETTIMEOUTMS, socket_timeout);
return 1;
};
mongodb_client = mongoc_client_new_from_uri(uri);
if(unlikely(!mongodb_client)) {
error("BACKEND: failed to create a new client");
return 1;
}
if(!mongoc_client_set_appname(mongodb_client, "netdata")) {
error("BACKEND: failed to set client appname");
};
mongodb_collection = mongoc_client_get_collection(mongodb_client, database_string, collection_string);
mongoc_uri_destroy(uri);
return 0;
}
void free_bson(bson_t **insert, size_t n_documents) {
size_t i;
for(i = 0; i < n_documents; i++)
bson_destroy(insert[i]);
free(insert);
}
int mongodb_insert(char *data, size_t n_metrics) {
bson_t **insert = calloc(n_metrics, sizeof(bson_t *));
bson_error_t error;
char *start = data, *end = data;
size_t n_documents = 0;
while(*end && n_documents <= n_metrics) {
while(*end && *end != '\n') end++;
if(likely(*end)) {
*end = '\0';
end++;
}
else {
break;
}
insert[n_documents] = bson_new_from_json((const uint8_t *)start, -1, &error);
if(unlikely(!insert[n_documents])) {
error("BACKEND: %s", error.message);
free_bson(insert, n_documents);
return 1;
}
start = end;
n_documents++;
}
if(unlikely(!mongoc_collection_insert_many(mongodb_collection, (const bson_t **)insert, n_documents, NULL, NULL, &error))) {
error("BACKEND: %s", error.message);
free_bson(insert, n_documents);
return 1;
}
free_bson(insert, n_documents);
return 0;
}
void mongodb_cleanup() {
mongoc_collection_destroy(mongodb_collection);
mongoc_client_destroy(mongodb_client);
mongoc_cleanup();
return;
}
int read_mongodb_conf(const char *path, char **uri_p, char **database_p, char **collection_p) {
char *uri = *uri_p;
char *database = *database_p;
char *collection = *collection_p;
if(unlikely(uri)) freez(uri);
if(unlikely(database)) freez(database);
if(unlikely(collection)) freez(collection);
uri = NULL;
database = NULL;
collection = NULL;
int line = 0;
char filename[FILENAME_MAX + 1];
snprintfz(filename, FILENAME_MAX, "%s/mongodb.conf", path);
char buffer[CONFIG_FILE_LINE_MAX + 1], *s;
debug(D_BACKEND, "BACKEND: opening config file '%s'", filename);
FILE *fp = fopen(filename, "r");
if(!fp) {
return 1;
}
while(fgets(buffer, CONFIG_FILE_LINE_MAX, fp) != NULL) {
buffer[CONFIG_FILE_LINE_MAX] = '\0';
line++;
s = trim(buffer);
if(!s || *s == '#') {
debug(D_BACKEND, "BACKEND: ignoring line %d of file '%s', it is empty.", line, filename);
continue;
}
char *name = s;
char *value = strchr(s, '=');
if(unlikely(!value)) {
error("BACKEND: ignoring line %d ('%s') of file '%s', there is no = in it.", line, s, filename);
continue;
}
*value = '\0';
value++;
name = trim(name);
value = trim(value);
if(unlikely(!name || *name == '#')) {
error("BACKEND: ignoring line %d of file '%s', name is empty.", line, filename);
continue;
}
if(!value)
value = "";
else
value = strip_quotes(value);
if(name[0] == 'u' && !strcmp(name, "uri")) {
uri = strdupz(value);
}
else if(name[0] == 'd' && !strcmp(name, "database")) {
database = strdupz(value);
}
else if(name[0] == 'c' && !strcmp(name, "collection")) {
collection = strdupz(value);
}
}
fclose(fp);
if(unlikely(!collection || !*collection)) {
error("BACKEND: collection name is a mandatory MongoDB parameter, but it is not configured");
return 1;
}
*uri_p = uri;
*database_p = database;
*collection_p = collection;
return 0;
}
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