1 /*
2 * SysDB - src/backend/mk-livestatus.c
3 * Copyright (C) 2012 Sebastian 'tokkee' Harl <sh@tokkee.org>
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
17 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
18 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR
19 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
28 #if HAVE_CONFIG_H
29 # include "config.h"
30 #endif /* HAVE_CONFIG_H */
32 #include "sysdb.h"
33 #include "core/plugin.h"
34 #include "core/store.h"
35 #include "utils/error.h"
36 #include "utils/unixsock.h"
38 #include "liboconfig/utils.h"
40 #include <assert.h>
42 #include <errno.h>
44 #include <stdio.h>
45 #include <stdlib.h>
46 #include <string.h>
48 SDB_PLUGIN_MAGIC;
50 /*
51 * private helper functions
52 */
54 static int
55 sdb_livestatus_get_host(sdb_unixsock_client_t __attribute__((unused)) *client,
56 size_t n, sdb_data_t *data,
57 sdb_object_t __attribute__((unused)) *user_data)
58 {
59 const char *hostname;
60 sdb_time_t timestamp;
62 int status;
64 assert(n == 2);
65 assert((data[0].type == SDB_TYPE_STRING)
66 && (data[1].type == SDB_TYPE_DATETIME));
68 hostname = data[0].data.string;
69 timestamp = data[1].data.datetime;
71 status = sdb_store_host(hostname, timestamp);
73 if (status < 0) {
74 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to "
75 "store/update host '%s'.", hostname);
76 return -1;
77 }
78 else if (status > 0) /* value too old */
79 return 0;
81 sdb_log(SDB_LOG_DEBUG, "MK Livestatus backend: Added/updated "
82 "host '%s' (last update timestamp = %"PRIscTIME").",
83 hostname, timestamp);
84 return 0;
85 } /* sdb_livestatus_get_host */
87 static int
88 sdb_livestatus_get_svc(sdb_unixsock_client_t __attribute__((unused)) *client,
89 size_t n, sdb_data_t *data,
90 sdb_object_t __attribute__((unused)) *user_data)
91 {
92 const char *hostname = NULL;
93 const char *svcname = NULL;
94 sdb_time_t timestamp = 0;
96 int status;
98 assert(n == 3);
99 assert((data[0].type == SDB_TYPE_STRING)
100 && (data[1].type == SDB_TYPE_STRING)
101 && (data[2].type == SDB_TYPE_DATETIME));
103 hostname = data[0].data.string;
104 svcname = data[1].data.string;
105 timestamp = data[2].data.datetime;
107 status = sdb_store_service(hostname, svcname, timestamp);
109 if (status < 0) {
110 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to "
111 "store/update service '%s / %s'.", hostname, svcname);
112 return -1;
113 }
114 else if (status > 0) /* value too old */
115 return 0;
117 sdb_log(SDB_LOG_DEBUG, "MK Livestatus backend: Added/updated "
118 "service '%s / %s' (last update timestamp = %"PRIscTIME").",
119 hostname, svcname, timestamp);
120 return 0;
121 } /* sdb_livestatus_get_svc */
123 /*
124 * plugin API
125 */
127 static int
128 sdb_livestatus_init(sdb_object_t *user_data)
129 {
130 sdb_unixsock_client_t *client;
132 if (! user_data)
133 return -1;
135 client = SDB_OBJ_WRAPPER(user_data)->data;
136 if (sdb_unixsock_client_connect(client)) {
137 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: "
138 "Failed to connect to livestatus @ %s.",
139 sdb_unixsock_client_path(client));
140 return -1;
141 }
143 sdb_log(SDB_LOG_INFO, "MK Livestatus backend: Successfully "
144 "connected to livestatus @ %s.",
145 sdb_unixsock_client_path(client));
146 return 0;
147 } /* sdb_livestatus_init */
149 static int
150 sdb_livestatus_collect(sdb_object_t *user_data)
151 {
152 sdb_unixsock_client_t *client;
154 int status;
156 if (! user_data)
157 return -1;
159 client = SDB_OBJ_WRAPPER(user_data)->data;
161 status = sdb_unixsock_client_send(client, "GET hosts\r\n"
162 "Columns: name last_check");
163 if (status <= 0) {
164 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to send "
165 "'GET hosts' command to livestatus @ %s.",
166 sdb_unixsock_client_path(client));
167 return -1;
168 }
170 sdb_unixsock_client_shutdown(client, SHUT_WR);
172 if (sdb_unixsock_client_process_lines(client, sdb_livestatus_get_host,
173 /* user data */ NULL, /* -> EOF */ -1, /* delim */ ";",
174 /* column count */ 2, SDB_TYPE_STRING, SDB_TYPE_DATETIME)) {
175 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to read "
176 "response from livestatus @ %s while reading hosts.",
177 sdb_unixsock_client_path(client));
178 return -1;
179 }
181 if ((! sdb_unixsock_client_eof(client))
182 || sdb_unixsock_client_error(client)) {
183 char errbuf[1024];
184 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to read "
185 "host from livestatus @ %s: %s",
186 sdb_unixsock_client_path(client),
187 sdb_strerror(errno, errbuf, sizeof(errbuf)));
188 return -1;
189 }
191 status = sdb_unixsock_client_send(client, "GET services\r\n"
192 "Columns: host_name description last_check");
193 if (status <= 0) {
194 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to send "
195 "'GET services' command to livestatus @ %s.",
196 sdb_unixsock_client_path(client));
197 return -1;
198 }
200 sdb_unixsock_client_shutdown(client, SHUT_WR);
202 if (sdb_unixsock_client_process_lines(client, sdb_livestatus_get_svc,
203 /* user data */ NULL, /* -> EOF */ -1, /* delim */ ";",
204 /* column count */ 3, SDB_TYPE_STRING, SDB_TYPE_STRING,
205 SDB_TYPE_DATETIME)) {
206 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to read "
207 "response from livestatus @ %s while reading services.",
208 sdb_unixsock_client_path(client));
209 return -1;
210 }
212 if ((! sdb_unixsock_client_eof(client))
213 || sdb_unixsock_client_error(client)) {
214 char errbuf[1024];
215 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to read "
216 "services from livestatus @ %s: %s",
217 sdb_unixsock_client_path(client),
218 sdb_strerror(errno, errbuf, sizeof(errbuf)));
219 return -1;
220 }
221 return 0;
222 } /* sdb_livestatus_collect */
224 static int
225 sdb_livestatus_config_instance(oconfig_item_t *ci)
226 {
227 char *name = NULL;
228 char *socket_path = NULL;
230 char cb_name[1024];
232 sdb_object_t *user_data;
233 sdb_unixsock_client_t *client;
235 int i;
237 if (oconfig_get_string(ci, &name)) {
238 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Instance requires "
239 "a single string argument\n\tUsage: <Instance NAME>");
240 return -1;
241 }
243 for (i = 0; i < ci->children_num; ++i) {
244 oconfig_item_t *child = ci->children + i;
246 if (! strcasecmp(child->key, "Socket"))
247 oconfig_get_string(child, &socket_path);
248 else
249 sdb_log(SDB_LOG_WARNING, "MK Livestatus backend: Ignoring "
250 "unknown config option '%s' inside <Instance %s>.",
251 child->key, name);
252 }
254 if (! socket_path) {
255 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Instance '%s' "
256 "missing the 'Socket' option.", name);
257 return -1;
258 }
260 snprintf(cb_name, sizeof(cb_name), "mk-livestatus::%s", name);
261 cb_name[sizeof(cb_name) - 1] = '\0';
263 client = sdb_unixsock_client_create(socket_path);
264 if (! client) {
265 char errbuf[1024];
266 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to create "
267 "unixsock client: %s",
268 sdb_strerror(errno, errbuf, sizeof(errbuf)));
269 return -1;
270 }
272 user_data = sdb_object_create_wrapper("unixsock-client", client,
273 (void (*)(void *))sdb_unixsock_client_destroy);
274 if (! user_data) {
275 sdb_unixsock_client_destroy(client);
276 sdb_log(SDB_LOG_ERR, "MK Livestatus backend: Failed to "
277 "allocate sdb_object_t");
278 return -1;
279 }
281 sdb_plugin_register_init(cb_name, sdb_livestatus_init, user_data);
282 sdb_plugin_register_collector(cb_name, sdb_livestatus_collect,
283 /* interval */ NULL, user_data);
285 /* pass control to the list */
286 sdb_object_deref(user_data);
287 return 0;
288 } /* sdb_livestatus_config_instance */
290 static int
291 sdb_livestatus_config(oconfig_item_t *ci)
292 {
293 int i;
295 for (i = 0; i < ci->children_num; ++i) {
296 oconfig_item_t *child = ci->children + i;
298 if (! strcasecmp(child->key, "Instance"))
299 sdb_livestatus_config_instance(child);
300 else
301 sdb_log(SDB_LOG_WARNING, "MK Livestatus backend: Ignoring "
302 "unknown config option '%s'.", child->key);
303 }
304 return 0;
305 } /* sdb_livestatus_config */
307 int
308 sdb_module_init(sdb_plugin_info_t *info)
309 {
310 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_NAME, "MK-Livestatus");
311 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_DESC,
312 "backend accessing Nagios/Icinga/Shinken using MK Livestatus");
313 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_COPYRIGHT,
314 "Copyright (C) 2012 Sebastian 'tokkee' Harl <sh@tokkee.org>");
315 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_LICENSE, "BSD");
316 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_VERSION, SDB_VERSION);
317 sdb_plugin_set_info(info, SDB_PLUGIN_INFO_PLUGIN_VERSION, SDB_VERSION);
319 sdb_plugin_register_config("mk-livestatus", sdb_livestatus_config);
320 return 0;
321 } /* sdb_version_extra */
323 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */