![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/src/plugins/backend/mk-livestatus.c b/src/plugins/backend/mk-livestatus.c
--- /dev/null
@@ -0,0 +1,333 @@
+/*
+ * SysDB - src/plugins/backend/mk-livestatus.c
+ * Copyright (C) 2012 Sebastian 'tokkee' Harl <sh@tokkee.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if HAVE_CONFIG_H
+# include "config.h"
+#endif /* HAVE_CONFIG_H */
+
+#include "sysdb.h"
+#include "core/plugin.h"
+#include "core/store.h"
+#include "utils/error.h"
+#include "utils/unixsock.h"
+
+#include "liboconfig/utils.h"
+
+#include <assert.h>
+
+#include <errno.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+SDB_PLUGIN_MAGIC;
+
+/*
+ * private helper functions
+ */
+
+static int
+sdb_livestatus_get_host(sdb_unixsock_client_t __attribute__((unused)) *client,
+ size_t n, sdb_data_t *data,
+ sdb_object_t __attribute__((unused)) *user_data)
+{
+ const char *hostname;
+ sdb_time_t timestamp;
+
+ int status;
+
+ assert(n == 2);
+ assert((data[0].type == SDB_TYPE_STRING)
+ && (data[1].type == SDB_TYPE_DATETIME));
+
+ hostname = data[0].data.string;
+ timestamp = data[1].data.datetime;
+
+ status = sdb_store_host(hostname, timestamp);
+
+ if (status < 0) {
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to "
+ "store/update host '%s'.", hostname);
+ return -1;
+ }
+ else if (status > 0) /* value too old */
+ return 0;
+
+ sdb_log(SDB_LOG_DEBUG, "MK Livestatus backend: Added/updated "
+ "host '%s' (last update timestamp = %"PRIsdbTIME").",
+ hostname, timestamp);
+ return 0;
+} /* sdb_livestatus_get_host */
+
+static int
+sdb_livestatus_get_svc(sdb_unixsock_client_t __attribute__((unused)) *client,
+ size_t n, sdb_data_t *data,
+ sdb_object_t __attribute__((unused)) *user_data)
+{
+ const char *hostname = NULL;
+ const char *svcname = NULL;
+ sdb_time_t timestamp = 0;
+
+ int status;
+
+ assert(n == 3);
+ assert((data[0].type == SDB_TYPE_STRING)
+ && (data[1].type == SDB_TYPE_STRING)
+ && (data[2].type == SDB_TYPE_DATETIME));
+
+ hostname = data[0].data.string;
+ svcname = data[1].data.string;
+ timestamp = data[2].data.datetime;
+
+ status = sdb_store_service(hostname, svcname, timestamp);
+
+ if (status < 0) {
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to "
+ "store/update service '%s / %s'.", hostname, svcname);
+ return -1;
+ }
+ else if (status > 0) /* value too old */
+ return 0;
+
+ sdb_log(SDB_LOG_DEBUG, "MK Livestatus backend: Added/updated "
+ "service '%s / %s' (last update timestamp = %"PRIsdbTIME").",
+ hostname, svcname, timestamp);
+ return 0;
+} /* sdb_livestatus_get_svc */
+
+/*
+ * plugin API
+ */
+
+static int
+sdb_livestatus_init(sdb_object_t *user_data)
+{
+ sdb_unixsock_client_t *client;
+
+ if (! user_data)
+ return -1;
+
+ client = SDB_OBJ_WRAPPER(user_data)->data;
+ if (sdb_unixsock_client_connect(client)) {
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: "
+ "Failed to connect to livestatus @ %s.",
+ sdb_unixsock_client_path(client));
+ return -1;
+ }
+
+ sdb_log(SDB_LOG_INFO, "MK Livestatus backend: Successfully "
+ "connected to livestatus @ %s.",
+ sdb_unixsock_client_path(client));
+ return 0;
+} /* sdb_livestatus_init */
+
+static int
+sdb_livestatus_shutdown(sdb_object_t *user_data)
+{
+ if (! user_data)
+ return -1;
+
+ sdb_unixsock_client_destroy(SDB_OBJ_WRAPPER(user_data)->data);
+ SDB_OBJ_WRAPPER(user_data)->data = NULL;
+ return 0;
+} /* sdb_livestatus_shutdown */
+
+static int
+sdb_livestatus_collect(sdb_object_t *user_data)
+{
+ sdb_unixsock_client_t *client;
+
+ int status;
+
+ if (! user_data)
+ return -1;
+
+ client = SDB_OBJ_WRAPPER(user_data)->data;
+
+ status = sdb_unixsock_client_send(client, "GET hosts\r\n"
+ "Columns: name last_check");
+ if (status <= 0) {
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to send "
+ "'GET hosts' command to livestatus @ %s.",
+ sdb_unixsock_client_path(client));
+ return -1;
+ }
+
+ sdb_unixsock_client_shutdown(client, SHUT_WR);
+
+ if (sdb_unixsock_client_process_lines(client, sdb_livestatus_get_host,
+ /* user data */ NULL, /* -> EOF */ -1, /* delim */ ";",
+ /* column count */ 2, SDB_TYPE_STRING, SDB_TYPE_DATETIME)) {
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to read "
+ "response from livestatus @ %s while reading hosts.",
+ sdb_unixsock_client_path(client));
+ return -1;
+ }
+
+ if ((! sdb_unixsock_client_eof(client))
+ || sdb_unixsock_client_error(client)) {
+ char errbuf[1024];
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to read "
+ "host from livestatus @ %s: %s",
+ sdb_unixsock_client_path(client),
+ sdb_strerror(errno, errbuf, sizeof(errbuf)));
+ return -1;
+ }
+
+ status = sdb_unixsock_client_send(client, "GET services\r\n"
+ "Columns: host_name description last_check");
+ if (status <= 0) {
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to send "
+ "'GET services' command to livestatus @ %s.",
+ sdb_unixsock_client_path(client));
+ return -1;
+ }
+
+ sdb_unixsock_client_shutdown(client, SHUT_WR);
+
+ if (sdb_unixsock_client_process_lines(client, sdb_livestatus_get_svc,
+ /* user data */ NULL, /* -> EOF */ -1, /* delim */ ";",
+ /* column count */ 3, SDB_TYPE_STRING, SDB_TYPE_STRING,
+ SDB_TYPE_DATETIME)) {
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to read "
+ "response from livestatus @ %s while reading services.",
+ sdb_unixsock_client_path(client));
+ return -1;
+ }
+
+ if ((! sdb_unixsock_client_eof(client))
+ || sdb_unixsock_client_error(client)) {
+ char errbuf[1024];
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to read "
+ "services from livestatus @ %s: %s",
+ sdb_unixsock_client_path(client),
+ sdb_strerror(errno, errbuf, sizeof(errbuf)));
+ return -1;
+ }
+ return 0;
+} /* sdb_livestatus_collect */
+
+static int
+sdb_livestatus_config_instance(oconfig_item_t *ci)
+{
+ char *name = NULL;
+ char *socket_path = NULL;
+
+ sdb_object_t *user_data;
+ sdb_unixsock_client_t *client;
+
+ int i;
+
+ if (oconfig_get_string(ci, &name)) {
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Instance requires "
+ "a single string argument\n\tUsage: <Instance NAME>");
+ return -1;
+ }
+
+ for (i = 0; i < ci->children_num; ++i) {
+ oconfig_item_t *child = ci->children + i;
+
+ if (! strcasecmp(child->key, "Socket"))
+ oconfig_get_string(child, &socket_path);
+ else
+ sdb_log(SDB_LOG_WARNING, "MK Livestatus backend: Ignoring "
+ "unknown config option '%s' inside <Instance %s>.",
+ child->key, name);
+ }
+
+ if (! socket_path) {
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Instance '%s' "
+ "missing the 'Socket' option.", name);
+ return -1;
+ }
+
+ client = sdb_unixsock_client_create(socket_path);
+ if (! client) {
+ char errbuf[1024];
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to create "
+ "unixsock client: %s",
+ sdb_strerror(errno, errbuf, sizeof(errbuf)));
+ return -1;
+ }
+
+ user_data = sdb_object_create_wrapper("unixsock-client", client,
+ (void (*)(void *))sdb_unixsock_client_destroy);
+ if (! user_data) {
+ sdb_unixsock_client_destroy(client);
+ sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to "
+ "allocate sdb_object_t");
+ return -1;
+ }
+
+ sdb_plugin_register_init(name, sdb_livestatus_init, user_data);
+ sdb_plugin_register_shutdown(name, sdb_livestatus_shutdown, user_data);
+ sdb_plugin_register_collector(name, sdb_livestatus_collect,
+ /* interval */ NULL, user_data);
+
+ /* pass control to the list */
+ sdb_object_deref(user_data);
+ return 0;
+} /* sdb_livestatus_config_instance */
+
+static int
+sdb_livestatus_config(oconfig_item_t *ci)
+{
+ int i;
+
+ if (! ci) /* nothing to do to deconfigure this plugin */
+ return 0;
+
+ for (i = 0; i < ci->children_num; ++i) {
+ oconfig_item_t *child = ci->children + i;
+
+ if (! strcasecmp(child->key, "Instance"))
+ sdb_livestatus_config_instance(child);
+ else
+ sdb_log(SDB_LOG_WARNING, "MK Livestatus backend: Ignoring "
+ "unknown config option '%s'.", child->key);
+ }
+ return 0;
+} /* sdb_livestatus_config */
+
+int
+sdb_module_init(sdb_plugin_info_t *info)
+{
+ sdb_plugin_set_info(info, SDB_PLUGIN_INFO_DESC,
+ "backend accessing Nagios/Icinga/Shinken using MK Livestatus");
+ sdb_plugin_set_info(info, SDB_PLUGIN_INFO_COPYRIGHT,
+ "Copyright (C) 2012 Sebastian 'tokkee' Harl <sh@tokkee.org>");
+ sdb_plugin_set_info(info, SDB_PLUGIN_INFO_LICENSE, "BSD");
+ sdb_plugin_set_info(info, SDB_PLUGIN_INFO_VERSION, SDB_VERSION);
+ sdb_plugin_set_info(info, SDB_PLUGIN_INFO_PLUGIN_VERSION, SDB_VERSION);
+
+ sdb_plugin_register_config(sdb_livestatus_config);
+ return 0;
+} /* sdb_version_extra */
+
+/* vim: set tw=78 sw=4 ts=4 noexpandtab : */
+