Merging upstream version 1.17.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 189 insertions, 0 deletions

diff --git a/backends/mongodb/mongodb.c b/backends/mongodb/mongodb.c
new file mode 100644
index 00000000..f40d8fa5
--- /dev/null
+++ b/backends/mongodb/mongodb.c
@@ -0,0 +1,189 @@
+// 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;
+}