Merging upstream version 1.17.0.

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

6 files changed, 832 insertions, 0 deletions

diff --git a/backends/mongodb/Makefile.am b/backends/mongodb/Makefile.am
new file mode 100644
index 000000000..89e14a8d0
--- /dev/null
+++ b/backends/mongodb/Makefile.am
@@ -0,0 +1,12 @@
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diff --git a/backends/mongodb/Makefile.in b/backends/mongodb/Makefile.in
new file mode 100644
index 000000000..aa1387073
--- /dev/null
+++ b/backends/mongodb/Makefile.in
@@ -0,0 +1,571 @@
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+	-rm -f Makefile
+distclean-am: clean-am distclean-generic
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am: install-dist_libconfigDATA
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-generic
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am: uninstall-dist_libconfigDATA
+
+.MAKE: install-am install-strip
+
+.PHONY: all all-am check check-am clean clean-generic cscopelist-am \
+	ctags-am distclean distclean-generic distdir dvi dvi-am html \
+	html-am info info-am install install-am install-data \
+	install-data-am install-dist_libconfigDATA install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-generic pdf pdf-am ps ps-am tags-am uninstall \
+	uninstall-am uninstall-dist_libconfigDATA
+
+.PRECIOUS: Makefile
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/backends/mongodb/README.md b/backends/mongodb/README.md
new file mode 100644
index 000000000..7538fe8be
--- /dev/null
+++ b/backends/mongodb/README.md
@@ -0,0 +1,32 @@
+# MongoDB backend
+
+## Prerequisites
+
+To use MongoDB as a backend, `libmongoc` 1.7.0 or higher should be [installed](http://mongoc.org/libmongoc/current/installing.html) first. Next, Netdata should be re-installed from the source. The installer will detect that the required libraries are now available.
+
+## Configuration
+
+To enable data sending to the MongoDB backend set the following options in `netdata.conf`:
+
+```
+[backend]
+    enabled = yes
+    type = mongodb
+```
+
+In the Netdata configuration directory run `./edit-config mongodb.conf` and set [MongoDB URI](https://docs.mongodb.com/manual/reference/connection-string/), database name, and collection name:
+
+```
+# URI
+uri = mongodb://<hostname>
+
+# database name
+database = your_database_name
+
+# collection name
+collection = your_collection_name
+```
+
+The default socket timeout depends on the backend update interval. The timeout is 500 ms shorter than the interval (but not less than 1000 ms). You can alter the timeout using the `sockettimeoutms` MongoDB URI option.
+
+[![analytics](https://www.google-analytics.com/collect?v=1&aip=1&t=pageview&_s=1&ds=github&dr=https%3A%2F%2Fgithub.com%2Fnetdata%2Fnetdata&dl=https%3A%2F%2Fmy-netdata.io%2Fgithub%2Fbackends%2Fmongodb%2FREADME&_u=MAC~&cid=5792dfd7-8dc4-476b-af31-da2fdb9f93d2&tid=UA-64295674-3)](<>)
diff --git a/backends/mongodb/mongodb.c b/backends/mongodb/mongodb.c
new file mode 100644
index 000000000..f40d8fa5f
--- /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;
+}
diff --git a/backends/mongodb/mongodb.conf b/backends/mongodb/mongodb.conf
new file mode 100644
index 000000000..11ea6efb2
--- /dev/null
+++ b/backends/mongodb/mongodb.conf
@@ -0,0 +1,12 @@
+# MongoDB backend configuration
+#
+# All options in this file are mandatory
+
+# URI
+uri =
+
+# database name
+database =
+
+# collection name
+collection =
diff --git a/backends/mongodb/mongodb.h b/backends/mongodb/mongodb.h
new file mode 100644
index 000000000..ffb276902
--- /dev/null
+++ b/backends/mongodb/mongodb.h
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#ifndef NETDATA_BACKEND_MONGODB_H
+#define NETDATA_BACKEND_MONGODB_H
+
+#include "backends/backends.h"
+
+extern int mongodb_init(const char *uri_string, const char *database_string, const char *collection_string, const int32_t socket_timeout);
+
+extern int mongodb_insert(char *data, size_t n_metrics);
+
+extern void mongodb_cleanup();
+
+extern int read_mongodb_conf(const char *path, char **uri_p, char **database_p, char **collection_p);
+
+#endif //NETDATA_BACKEND_MONGODB_H