df36429b48f9f145995ba9415f04fade8b5c7a95
1 /**
2 * collectd - src/rrdcached.c
3 * Copyright (C) 2008 Florian octo Forster
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the License is applicable.
8 *
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17 *
18 * Authors:
19 * Florian octo Forster <octo at verplant.org>
20 **/
22 #include "collectd.h"
23 #include "plugin.h"
24 #include "common.h"
25 #include "utils_rrdcreate.h"
27 #undef HAVE_CONFIG_H
28 #include <rrd_client.h>
30 /*
31 * Private variables
32 */
33 static const char *config_keys[] =
34 {
35 "DaemonAddress",
36 "DataDir",
37 "CreateFiles",
38 "CollectStatistics"
39 };
40 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
42 static char *datadir = NULL;
43 static char *daemon_address = NULL;
44 static int config_create_files = 1;
45 static int config_collect_stats = 1;
46 static rrdcreate_config_t rrdcreate_config =
47 {
48 /* stepsize = */ 0,
49 /* heartbeat = */ 0,
50 /* rrarows = */ 1200,
51 /* xff = */ 0.1,
53 /* timespans = */ NULL,
54 /* timespans_num = */ 0,
56 /* consolidation_functions = */ NULL,
57 /* consolidation_functions_num = */ 0
58 };
60 static int value_list_to_string (char *buffer, int buffer_len,
61 const data_set_t *ds, const value_list_t *vl)
62 {
63 int offset;
64 int status;
65 int i;
67 assert (0 == strcmp (ds->type, vl->type));
69 memset (buffer, '\0', buffer_len);
71 status = ssnprintf (buffer, buffer_len, "%u", (unsigned int) vl->time);
72 if ((status < 1) || (status >= buffer_len))
73 return (-1);
74 offset = status;
76 for (i = 0; i < ds->ds_num; i++)
77 {
78 if ((ds->ds[i].type != DS_TYPE_COUNTER)
79 && (ds->ds[i].type != DS_TYPE_GAUGE))
80 return (-1);
82 if (ds->ds[i].type == DS_TYPE_COUNTER)
83 {
84 status = ssnprintf (buffer + offset, buffer_len - offset,
85 ":%llu", vl->values[i].counter);
86 }
87 else /* if (ds->ds[i].type == DS_TYPE_GAUGE) */
88 {
89 status = ssnprintf (buffer + offset, buffer_len - offset,
90 ":%lf", vl->values[i].gauge);
91 }
93 if ((status < 1) || (status >= (buffer_len - offset)))
94 return (-1);
96 offset += status;
97 } /* for ds->ds_num */
99 return (0);
100 } /* int value_list_to_string */
102 static int value_list_to_filename (char *buffer, int buffer_len,
103 const data_set_t *ds, const value_list_t *vl)
104 {
105 int offset = 0;
106 int status;
108 assert (0 == strcmp (ds->type, vl->type));
110 if (datadir != NULL)
111 {
112 status = ssnprintf (buffer + offset, buffer_len - offset,
113 "%s/", datadir);
114 if ((status < 1) || (status >= buffer_len - offset))
115 return (-1);
116 offset += status;
117 }
119 status = ssnprintf (buffer + offset, buffer_len - offset,
120 "%s/", vl->host);
121 if ((status < 1) || (status >= buffer_len - offset))
122 return (-1);
123 offset += status;
125 if (strlen (vl->plugin_instance) > 0)
126 status = ssnprintf (buffer + offset, buffer_len - offset,
127 "%s-%s/", vl->plugin, vl->plugin_instance);
128 else
129 status = ssnprintf (buffer + offset, buffer_len - offset,
130 "%s/", vl->plugin);
131 if ((status < 1) || (status >= buffer_len - offset))
132 return (-1);
133 offset += status;
135 if (strlen (vl->type_instance) > 0)
136 status = ssnprintf (buffer + offset, buffer_len - offset,
137 "%s-%s", vl->type, vl->type_instance);
138 else
139 status = ssnprintf (buffer + offset, buffer_len - offset,
140 "%s", vl->type);
141 if ((status < 1) || (status >= buffer_len - offset))
142 return (-1);
143 offset += status;
145 strncpy (buffer + offset, ".rrd", buffer_len - offset);
146 buffer[buffer_len - 1] = 0;
148 return (0);
149 } /* int value_list_to_filename */
151 static int rc_config (const char *key, const char *value)
152 {
153 if (strcasecmp ("DataDir", key) == 0)
154 {
155 if (datadir != NULL)
156 free (datadir);
157 datadir = strdup (value);
158 if (datadir != NULL)
159 {
160 int len = strlen (datadir);
161 while ((len > 0) && (datadir[len - 1] == '/'))
162 {
163 len--;
164 datadir[len] = '\0';
165 }
166 if (len <= 0)
167 {
168 free (datadir);
169 datadir = NULL;
170 }
171 }
172 }
173 else if (strcasecmp ("DaemonAddress", key) == 0)
174 {
175 sfree (daemon_address);
176 daemon_address = strdup (value);
177 if (daemon_address == NULL)
178 {
179 ERROR ("rrdcached plugin: strdup failed.");
180 return (1);
181 }
182 }
183 else if (strcasecmp ("CreateFiles", key) == 0)
184 {
185 if ((strcasecmp ("false", value) == 0)
186 || (strcasecmp ("no", value) == 0)
187 || (strcasecmp ("off", value) == 0))
188 config_create_files = 0;
189 else
190 config_create_files = 1;
191 }
192 else if (strcasecmp ("CollectStatistics", key) == 0)
193 {
194 if ((strcasecmp ("false", value) == 0)
195 || (strcasecmp ("no", value) == 0)
196 || (strcasecmp ("off", value) == 0))
197 config_collect_stats = 0;
198 else
199 config_collect_stats = 1;
200 }
201 else
202 {
203 return (-1);
204 }
205 return (0);
206 } /* int rc_config */
208 static int rc_read (void)
209 {
210 int status;
211 rrdc_stats_t *head;
212 rrdc_stats_t *ptr;
214 value_t values[1];
215 value_list_t vl = VALUE_LIST_INIT;
217 if (daemon_address == NULL)
218 return (-1);
220 if (config_collect_stats == 0)
221 return (-1);
223 vl.values = values;
224 vl.values_len = 1;
226 if ((strncmp ("unix:", daemon_address, strlen ("unix:")) == 0)
227 || (daemon_address[0] == '/'))
228 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
229 else
230 sstrncpy (vl.host, daemon_address, sizeof (vl.host));
231 sstrncpy (vl.plugin, "rrdcached", sizeof (vl.plugin));
233 head = NULL;
234 status = rrdc_stats_get (&head);
235 if (status != 0)
236 {
237 ERROR ("rrdcached plugin: rrdc_stats_get failed with status %i.", status);
238 return (-1);
239 }
241 for (ptr = head; ptr != NULL; ptr = ptr->next)
242 {
243 if (ptr->type == RRDC_STATS_TYPE_GAUGE)
244 values[0].gauge = (gauge_t) ptr->value.gauge;
245 else if (ptr->type == RRDC_STATS_TYPE_COUNTER)
246 values[0].counter = (counter_t) ptr->value.counter;
247 else
248 continue;
250 if (strcasecmp ("QueueLength", ptr->name) == 0)
251 {
252 sstrncpy (vl.type, "queue_length", sizeof (vl.type));
253 sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
254 }
255 else if (strcasecmp ("UpdatesWritten", ptr->name) == 0)
256 {
257 sstrncpy (vl.type, "operations", sizeof (vl.type));
258 sstrncpy (vl.type_instance, "write-updates", sizeof (vl.type_instance));
259 }
260 else if (strcasecmp ("DataSetsWritten", ptr->name) == 0)
261 {
262 sstrncpy (vl.type, "operations", sizeof (vl.type));
263 sstrncpy (vl.type_instance, "write-data_sets",
264 sizeof (vl.type_instance));
265 }
266 else if (strcasecmp ("TreeNodesNumber", ptr->name) == 0)
267 {
268 sstrncpy (vl.type, "gauge", sizeof (vl.type));
269 sstrncpy (vl.type_instance, "tree_nodes", sizeof (vl.type_instance));
270 }
271 else if (strcasecmp ("TreeDepth", ptr->name) == 0)
272 {
273 sstrncpy (vl.type, "gauge", sizeof (vl.type));
274 sstrncpy (vl.type_instance, "tree_depth", sizeof (vl.type_instance));
275 }
276 else if (strcasecmp ("FlushesReceived", ptr->name) == 0)
277 {
278 sstrncpy (vl.type, "operations", sizeof (vl.type));
279 sstrncpy (vl.type_instance, "receive-flush", sizeof (vl.type_instance));
280 }
281 else if (strcasecmp ("JournalBytes", ptr->name) == 0)
282 {
283 sstrncpy (vl.type, "counter", sizeof (vl.type));
284 sstrncpy (vl.type_instance, "journal-bytes", sizeof (vl.type_instance));
285 }
286 else if (strcasecmp ("JournalRotate", ptr->name) == 0)
287 {
288 sstrncpy (vl.type, "counter", sizeof (vl.type));
289 sstrncpy (vl.type_instance, "journal-rotates", sizeof (vl.type_instance));
290 }
291 else if (strcasecmp ("UpdatesReceived", ptr->name) == 0)
292 {
293 sstrncpy (vl.type, "operations", sizeof (vl.type));
294 sstrncpy (vl.type_instance, "receive-update", sizeof (vl.type_instance));
295 }
296 else
297 {
298 DEBUG ("rrdcached plugin: rc_read: Unknown statistic `%s'.", ptr->name);
299 continue;
300 }
302 plugin_dispatch_values (&vl);
303 } /* for (ptr = head; ptr != NULL; ptr = ptr->next) */
305 rrdc_stats_free (head);
307 return (0);
308 } /* int rc_read */
310 static int rc_init (void)
311 {
312 if (config_collect_stats != 0)
313 plugin_register_read ("rrdcached", rc_read);
315 return (0);
316 } /* int rc_init */
318 static int rc_write (const data_set_t *ds, const value_list_t *vl,
319 user_data_t __attribute__((unused)) *user_data)
320 {
321 char filename[512];
322 char values[512];
323 char *values_array[2];
324 int status;
326 if (daemon_address == NULL)
327 {
328 ERROR ("rrdcached plugin: daemon_address == NULL.");
329 plugin_unregister_write ("rrdcached");
330 return (-1);
331 }
333 if (strcmp (ds->type, vl->type) != 0)
334 {
335 ERROR ("rrdcached plugin: DS type does not match value list type");
336 return (-1);
337 }
339 if (value_list_to_filename (filename, sizeof (filename), ds, vl) != 0)
340 {
341 ERROR ("rrdcached plugin: value_list_to_filename failed.");
342 return (-1);
343 }
345 if (value_list_to_string (values, sizeof (values), ds, vl) != 0)
346 {
347 ERROR ("rrdcached plugin: value_list_to_string failed.");
348 return (-1);
349 }
351 values_array[0] = values;
352 values_array[1] = NULL;
354 if (config_create_files != 0)
355 {
356 struct stat statbuf;
358 status = stat (filename, &statbuf);
359 if (status != 0)
360 {
361 if (errno != ENOENT)
362 {
363 char errbuf[1024];
364 ERROR ("rrdcached plugin: stat (%s) failed: %s",
365 filename, sstrerror (errno, errbuf, sizeof (errbuf)));
366 return (-1);
367 }
369 status = cu_rrd_create_file (filename, ds, vl, &rrdcreate_config);
370 if (status != 0)
371 {
372 ERROR ("rrdcached plugin: cu_rrd_create_file (%s) failed.",
373 filename);
374 return (-1);
375 }
376 }
377 }
379 status = rrdc_connect (daemon_address);
380 if (status != 0)
381 {
382 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
383 daemon_address, status);
384 return (-1);
385 }
387 status = rrdc_update (filename, /* values_num = */ 1, (void *) values_array);
388 if (status != 0)
389 {
390 ERROR ("rrdcached plugin: rrdc_update (%s, [%s], 1) failed with "
391 "status %i.",
392 filename, values_array[0], status);
393 return (-1);
394 }
396 return (0);
397 } /* int rc_write */
399 static int rc_shutdown (void)
400 {
401 rrdc_disconnect ();
402 return (0);
403 } /* int rc_shutdown */
405 void module_register (void)
406 {
407 plugin_register_config ("rrdcached", rc_config,
408 config_keys, config_keys_num);
409 plugin_register_init ("rrdcached", rc_init);
410 plugin_register_write ("rrdcached", rc_write, /* user_data = */ NULL);
411 plugin_register_shutdown ("rrdcached", rc_shutdown);
412 } /* void module_register */
414 /*
415 * vim: set sw=2 sts=2 et :
416 */