0edbc3d25f842012c1140e61112036e47d3e4615
1 /*
2 * syscollector - 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 #include "syscollector.h"
29 #include "core/plugin.h"
30 #include "core/store.h"
31 #include "utils/string.h"
32 #include "utils/unixsock.h"
34 #include "liboconfig/utils.h"
36 #include <assert.h>
38 #include <errno.h>
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <string.h>
44 SC_PLUGIN_MAGIC;
46 /*
47 * private helper functions
48 */
50 static int
51 sc_livestatus_get_host(sc_unixsock_client_t __attribute__((unused)) *client,
52 size_t n, sc_data_t *data, sc_object_t __attribute__((unused)) *user_data)
53 {
54 char *hostname = NULL;
55 sc_time_t timestamp = 0;
57 sc_host_t host = SC_HOST_INIT;
59 int status;
61 assert(n == 2);
62 assert((data[0].type == SC_TYPE_STRING)
63 && (data[1].type == SC_TYPE_DATETIME));
65 hostname = strdup(data[0].data.string);
66 timestamp = data[1].data.datetime;
68 host.host_name = hostname;
69 host.host_last_update = timestamp;
71 status = sc_store_host(&host);
73 if (status < 0) {
74 fprintf(stderr, "MK Livestatus backend: Failed to store/update "
75 "host '%s'.\n", hostname);
76 free(hostname);
77 return -1;
78 }
79 else if (status > 0) /* value too old */
80 return 0;
82 fprintf(stderr, "MK Livestatus backend: Added/updated host '%s' "
83 "(last update timestamp = %"PRIscTIME").\n",
84 hostname, timestamp);
85 free(hostname);
86 return 0;
87 } /* sc_livestatus_get_host */
89 static int
90 sc_livestatus_get_svc(sc_unixsock_client_t __attribute__((unused)) *client,
91 size_t n, sc_data_t *data, sc_object_t __attribute__((unused)) *user_data)
92 {
93 char *hostname = NULL;
94 char *svcname = NULL;
95 sc_time_t timestamp = 0;
97 sc_service_t svc = SC_SVC_INIT;
99 int status;
101 assert(n == 3);
102 assert((data[0].type == SC_TYPE_STRING)
103 && (data[1].type == SC_TYPE_STRING)
104 && (data[2].type == SC_TYPE_DATETIME));
106 hostname = strdup(data[0].data.string);
107 svcname = strdup(data[1].data.string);
108 timestamp = data[2].data.datetime;
110 svc.hostname = hostname;
111 svc.svc_name = svcname;
112 svc.svc_last_update = timestamp;
114 status = sc_store_service(&svc);
116 if (status < 0) {
117 fprintf(stderr, "MK Livestatus backend: Failed to store/update "
118 "service '%s / %s'.\n", hostname, svcname);
119 free(hostname);
120 free(svcname);
121 return -1;
122 }
123 else if (status > 0) /* value too old */
124 return 0;
126 fprintf(stderr, "MK Livestatus backend: Added/updated service '%s / %s' "
127 "(last update timestamp = %"PRIscTIME").\n",
128 hostname, svcname, timestamp);
129 free(hostname);
130 free(svcname);
131 return 0;
132 } /* sc_livestatus_get_svc */
134 /*
135 * plugin API
136 */
138 static int
139 sc_livestatus_init(sc_object_t *user_data)
140 {
141 sc_unixsock_client_t *client;
143 if (! user_data)
144 return -1;
146 client = SC_OBJ_WRAPPER(user_data)->data;
147 if (sc_unixsock_client_connect(client)) {
148 fprintf(stderr, "MK Livestatus backend: "
149 "Failed to connect to livestatus @ %s.\n",
150 sc_unixsock_client_path(client));
151 return -1;
152 }
154 fprintf(stderr, "MK Livestatus backend: Successfully "
155 "connected to livestatus @ %s.\n",
156 sc_unixsock_client_path(client));
157 return 0;
158 } /* sc_livestatus_init */
160 static int
161 sc_livestatus_collect(sc_object_t *user_data)
162 {
163 sc_unixsock_client_t *client;
165 int status;
167 if (! user_data)
168 return -1;
170 client = SC_OBJ_WRAPPER(user_data)->data;
172 status = sc_unixsock_client_send(client, "GET hosts\r\n"
173 "Columns: name last_check");
174 if (status <= 0) {
175 fprintf(stderr, "MK Livestatus backend: Failed to send "
176 "'GET hosts' command to livestatus @ %s.\n",
177 sc_unixsock_client_path(client));
178 return -1;
179 }
181 sc_unixsock_client_shutdown(client, SHUT_WR);
183 if (sc_unixsock_client_process_lines(client, sc_livestatus_get_host,
184 /* user data */ NULL, /* -> EOF */ -1, /* delim */ ";",
185 /* column count */ 2, SC_TYPE_STRING, SC_TYPE_DATETIME)) {
186 fprintf(stderr, "MK Livestatus backend: Failed to read response "
187 "from livestatus @ %s while reading hosts.\n",
188 sc_unixsock_client_path(client));
189 return -1;
190 }
192 if ((! sc_unixsock_client_eof(client))
193 || sc_unixsock_client_error(client)) {
194 char errbuf[1024];
195 fprintf(stderr, "MK Livestatus backend: Failed to read host "
196 "from livestatus @ %s: %s\n",
197 sc_unixsock_client_path(client),
198 sc_strerror(errno, errbuf, sizeof(errbuf)));
199 return -1;
200 }
202 status = sc_unixsock_client_send(client, "GET services\r\n"
203 "Columns: host_name description last_check");
204 if (status <= 0) {
205 fprintf(stderr, "MK Livestatus backend: Failed to send "
206 "'GET services' command to livestatus @ %s.\n",
207 sc_unixsock_client_path(client));
208 return -1;
209 }
211 sc_unixsock_client_shutdown(client, SHUT_WR);
213 if (sc_unixsock_client_process_lines(client, sc_livestatus_get_svc,
214 /* user data */ NULL, /* -> EOF */ -1, /* delim */ ";",
215 /* column count */ 3, SC_TYPE_STRING, SC_TYPE_STRING,
216 SC_TYPE_DATETIME)) {
217 fprintf(stderr, "MK Livestatus backend: Failed to read response "
218 "from livestatus @ %s while reading services.\n",
219 sc_unixsock_client_path(client));
220 return -1;
221 }
223 if ((! sc_unixsock_client_eof(client))
224 || sc_unixsock_client_error(client)) {
225 char errbuf[1024];
226 fprintf(stderr, "MK Livestatus backend: Failed to read services "
227 "from livestatus @ %s: %s\n",
228 sc_unixsock_client_path(client),
229 sc_strerror(errno, errbuf, sizeof(errbuf)));
230 return -1;
231 }
232 return 0;
233 } /* sc_livestatus_collect */
235 static int
236 sc_livestatus_config_instance(oconfig_item_t *ci)
237 {
238 char *name = NULL;
239 char *socket = NULL;
241 char cb_name[1024];
243 sc_object_t *user_data;
244 sc_unixsock_client_t *client;
246 int i;
248 if (oconfig_get_string(ci, &name)) {
249 fprintf(stderr, "MK Livestatus backend: Instance requires a single "
250 "string argument\n\tUsage: <Instance NAME>\n");
251 return -1;
252 }
254 for (i = 0; i < ci->children_num; ++i) {
255 oconfig_item_t *child = ci->children + i;
257 if (! strcasecmp(child->key, "Socket"))
258 oconfig_get_string(child, &socket);
259 else
260 fprintf(stderr, "MK Livestatus backend: Ignoring unknown config "
261 "option '%s' inside <Instance %s>.\n",
262 child->key, name);
263 }
265 if (! socket) {
266 fprintf(stderr, "MK Livestatus backend: Instance '%s' missing "
267 "the 'Socket' option.\n", name);
268 return -1;
269 }
271 snprintf(cb_name, sizeof(cb_name), "mk-livestatus-%s", name);
272 cb_name[sizeof(cb_name) - 1] = '\0';
274 client = sc_unixsock_client_create(socket);
275 if (! client) {
276 char errbuf[1024];
277 fprintf(stderr, "MK Livestatus backend: Failed to create unixsock "
278 "client: %s\n", sc_strerror(errno, errbuf, sizeof(errbuf)));
279 return -1;
280 }
282 user_data = sc_object_create_wrapper(client,
283 (void (*)(void *))sc_unixsock_client_destroy);
284 if (! user_data) {
285 sc_unixsock_client_destroy(client);
286 fprintf(stderr, "MK Livestatus backend: Failed to "
287 "allocate sc_object_t\n");
288 return -1;
289 }
291 sc_plugin_register_init(cb_name, sc_livestatus_init, user_data);
292 sc_plugin_register_collector(cb_name, sc_livestatus_collect,
293 /* interval */ NULL, user_data);
295 /* pass control to the list */
296 sc_object_deref(user_data);
297 return 0;
298 } /* sc_livestatus_config_instance */
300 static int
301 sc_livestatus_config(oconfig_item_t *ci)
302 {
303 int i;
305 for (i = 0; i < ci->children_num; ++i) {
306 oconfig_item_t *child = ci->children + i;
308 if (! strcasecmp(child->key, "Instance"))
309 sc_livestatus_config_instance(child);
310 else
311 fprintf(stderr, "MK Livestatus backend: Ignoring unknown config "
312 "option '%s'.\n", child->key);
313 }
314 return 0;
315 } /* sc_livestatus_config */
317 int
318 sc_module_init(sc_plugin_info_t *info)
319 {
320 sc_plugin_set_info(info, SC_PLUGIN_INFO_NAME, "MK-Livestatus");
321 sc_plugin_set_info(info, SC_PLUGIN_INFO_DESC,
322 "backend accessing Nagios/Icinga/Shinken using MK Livestatus");
323 sc_plugin_set_info(info, SC_PLUGIN_INFO_COPYRIGHT,
324 "Copyright (C) 2012 Sebastian 'tokkee' Harl <sh@tokkee.org>");
325 sc_plugin_set_info(info, SC_PLUGIN_INFO_LICENSE, "BSD");
326 sc_plugin_set_info(info, SC_PLUGIN_INFO_VERSION, SC_VERSION);
327 sc_plugin_set_info(info, SC_PLUGIN_INFO_PLUGIN_VERSION, SC_VERSION);
329 sc_plugin_register_config("mk-livestatus", sc_livestatus_config);
330 return 0;
331 } /* sc_version_extra */
333 /* vim: set tw=78 sw=4 ts=4 noexpandtab : */