2 * collectd - src/rrdcached.c
3 * Copyright (C) 2008-2013 Florian octo Forster
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.
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.
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
19 * Florian octo Forster <octo at collectd.org>
25 #include "utils_rrdcreate.h"
29 #include <rrd_client.h>
34 static char *datadir = NULL;
35 static char *daemon_address = NULL;
36 static _Bool config_create_files = 1;
37 static _Bool config_collect_stats = 1;
38 static rrdcreate_config_t rrdcreate_config =
45 /* timespans = */ NULL,
46 /* timespans_num = */ 0,
48 /* consolidation_functions = */ NULL,
49 /* consolidation_functions_num = */ 0
55 static int rc_write (const data_set_t *ds, const value_list_t *vl,
56 user_data_t __attribute__((unused)) *user_data);
57 static int rc_flush (__attribute__((unused)) cdtime_t timeout,
58 const char *identifier, __attribute__((unused)) user_data_t *ud);
60 static int value_list_to_string (char *buffer, int buffer_len,
61 const data_set_t *ds, const value_list_t *vl)
68 assert (0 == strcmp (ds->type, vl->type));
70 memset (buffer, '\0', buffer_len);
72 t = CDTIME_T_TO_TIME_T (vl->time);
73 status = ssnprintf (buffer, buffer_len, "%lu", (unsigned long) t);
74 if ((status < 1) || (status >= buffer_len))
78 for (i = 0; i < ds->ds_num; i++)
80 if ((ds->ds[i].type != DS_TYPE_COUNTER)
81 && (ds->ds[i].type != DS_TYPE_GAUGE)
82 && (ds->ds[i].type != DS_TYPE_DERIVE)
83 && (ds->ds[i].type != DS_TYPE_ABSOLUTE))
86 if (ds->ds[i].type == DS_TYPE_COUNTER)
88 status = ssnprintf (buffer + offset, buffer_len - offset,
89 ":%llu", vl->values[i].counter);
91 else if (ds->ds[i].type == DS_TYPE_GAUGE)
93 status = ssnprintf (buffer + offset, buffer_len - offset,
94 ":%f", vl->values[i].gauge);
96 else if (ds->ds[i].type == DS_TYPE_DERIVE) {
97 status = ssnprintf (buffer + offset, buffer_len - offset,
98 ":%"PRIi64, vl->values[i].derive);
100 else /* if (ds->ds[i].type == DS_TYPE_ABSOLUTE) */ {
101 status = ssnprintf (buffer + offset, buffer_len - offset,
102 ":%"PRIu64, vl->values[i].absolute);
106 if ((status < 1) || (status >= (buffer_len - offset)))
110 } /* for ds->ds_num */
113 } /* int value_list_to_string */
115 static int value_list_to_filename (char *buffer, size_t buffer_size,
116 value_list_t const *vl)
118 char const suffix[] = ".rrd";
124 size_t datadir_len = strlen (datadir) + 1;
126 if (datadir_len >= buffer_size)
129 sstrncpy (buffer, datadir, buffer_size);
130 buffer[datadir_len - 1] = '/';
131 buffer[datadir_len] = 0;
133 buffer += datadir_len;
134 buffer_size -= datadir_len;
137 status = FORMAT_VL (buffer, buffer_size, vl);
141 len = strlen (buffer);
142 assert (len < buffer_size);
146 if (buffer_size <= sizeof (suffix))
149 memcpy (buffer, suffix, sizeof (suffix));
151 } /* int value_list_to_filename */
153 static int rc_config_get_int_positive (oconfig_item_t const *ci, int *ret)
158 status = cf_util_get_int (ci, &tmp);
166 } /* int rc_config_get_int_positive */
168 static int rc_config_get_xff (oconfig_item_t const *ci, double *ret)
172 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
174 ERROR ("rrdcached plugin: The \"%s\" needs exactly one numeric argument "
175 "in the range [0.0, 1.0)", ci->key);
179 value = ci->values[0].value.number;
180 if ((value >= 0.0) && (value < 1.0))
186 ERROR ("rrdcached plugin: The \"%s\" needs exactly one numeric argument "
187 "in the range [0.0, 1.0)", ci->key);
189 } /* int rc_config_get_xff */
191 static int rc_config_add_timespan (int timespan)
198 tmp = realloc (rrdcreate_config.timespans,
199 sizeof (*rrdcreate_config.timespans)
200 * (rrdcreate_config.timespans_num + 1));
203 rrdcreate_config.timespans = tmp;
205 rrdcreate_config.timespans[rrdcreate_config.timespans_num] = timespan;
206 rrdcreate_config.timespans_num++;
209 } /* int rc_config_add_timespan */
211 static int rc_config (oconfig_item_t *ci)
215 for (i = 0; i < ci->children_num; i++)
217 oconfig_item_t const *child = ci->children + i;
218 const char *key = child->key;
221 if (strcasecmp ("DataDir", key) == 0)
223 status = cf_util_get_string (child, &datadir);
226 int len = strlen (datadir);
228 while ((len > 0) && (datadir[len - 1] == '/'))
238 else if (strcasecmp ("DaemonAddress", key) == 0)
239 status = cf_util_get_string (child, &daemon_address);
240 else if (strcasecmp ("CreateFiles", key) == 0)
241 status = cf_util_get_boolean (child, &config_create_files);
242 else if (strcasecmp ("CollectStatistics", key) == 0)
243 status = cf_util_get_boolean (child, &config_collect_stats);
244 else if (strcasecmp ("StepSize", key) == 0)
248 status = rc_config_get_int_positive (child, &tmp);
250 rrdcreate_config.stepsize = (unsigned long) tmp;
252 else if (strcasecmp ("HeartBeat", key) == 0)
253 status = rc_config_get_int_positive (child, &rrdcreate_config.heartbeat);
254 else if (strcasecmp ("RRARows", key) == 0)
255 status = rc_config_get_int_positive (child, &rrdcreate_config.rrarows);
256 else if (strcasecmp ("RRATimespan", key) == 0)
259 status = rc_config_get_int_positive (child, &tmp);
261 status = rc_config_add_timespan (tmp);
263 else if (strcasecmp ("XFF", key) == 0)
264 status = rc_config_get_xff (child, &rrdcreate_config.xff);
267 WARNING ("rrdcached plugin: Ignoring invalid option %s.", key);
272 WARNING ("rrdcached plugin: Handling the \"%s\" option failed.", key);
275 if (daemon_address != NULL)
277 plugin_register_write ("rrdcached", rc_write, /* user_data = */ NULL);
278 plugin_register_flush ("rrdcached", rc_flush, /* user_data = */ NULL);
281 } /* int rc_config */
283 static int rc_read (void)
290 value_list_t vl = VALUE_LIST_INIT;
292 if (daemon_address == NULL)
295 if (!config_collect_stats)
301 if ((strncmp ("unix:", daemon_address, strlen ("unix:")) == 0)
302 || (daemon_address[0] == '/'))
303 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
305 sstrncpy (vl.host, daemon_address, sizeof (vl.host));
306 sstrncpy (vl.plugin, "rrdcached", sizeof (vl.plugin));
308 status = rrdc_connect (daemon_address);
311 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
312 daemon_address, status);
317 status = rrdc_stats_get (&head);
320 ERROR ("rrdcached plugin: rrdc_stats_get failed with status %i.", status);
324 for (ptr = head; ptr != NULL; ptr = ptr->next)
326 if (ptr->type == RRDC_STATS_TYPE_GAUGE)
327 values[0].gauge = (gauge_t) ptr->value.gauge;
328 else if (ptr->type == RRDC_STATS_TYPE_COUNTER)
329 values[0].counter = (counter_t) ptr->value.counter;
333 if (strcasecmp ("QueueLength", ptr->name) == 0)
335 sstrncpy (vl.type, "queue_length", sizeof (vl.type));
336 sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
338 else if (strcasecmp ("UpdatesWritten", ptr->name) == 0)
340 sstrncpy (vl.type, "operations", sizeof (vl.type));
341 sstrncpy (vl.type_instance, "write-updates", sizeof (vl.type_instance));
343 else if (strcasecmp ("DataSetsWritten", ptr->name) == 0)
345 sstrncpy (vl.type, "operations", sizeof (vl.type));
346 sstrncpy (vl.type_instance, "write-data_sets",
347 sizeof (vl.type_instance));
349 else if (strcasecmp ("TreeNodesNumber", ptr->name) == 0)
351 sstrncpy (vl.type, "gauge", sizeof (vl.type));
352 sstrncpy (vl.type_instance, "tree_nodes", sizeof (vl.type_instance));
354 else if (strcasecmp ("TreeDepth", ptr->name) == 0)
356 sstrncpy (vl.type, "gauge", sizeof (vl.type));
357 sstrncpy (vl.type_instance, "tree_depth", sizeof (vl.type_instance));
359 else if (strcasecmp ("FlushesReceived", ptr->name) == 0)
361 sstrncpy (vl.type, "operations", sizeof (vl.type));
362 sstrncpy (vl.type_instance, "receive-flush", sizeof (vl.type_instance));
364 else if (strcasecmp ("JournalBytes", ptr->name) == 0)
366 sstrncpy (vl.type, "counter", sizeof (vl.type));
367 sstrncpy (vl.type_instance, "journal-bytes", sizeof (vl.type_instance));
369 else if (strcasecmp ("JournalRotate", ptr->name) == 0)
371 sstrncpy (vl.type, "counter", sizeof (vl.type));
372 sstrncpy (vl.type_instance, "journal-rotates", sizeof (vl.type_instance));
374 else if (strcasecmp ("UpdatesReceived", ptr->name) == 0)
376 sstrncpy (vl.type, "operations", sizeof (vl.type));
377 sstrncpy (vl.type_instance, "receive-update", sizeof (vl.type_instance));
381 DEBUG ("rrdcached plugin: rc_read: Unknown statistic `%s'.", ptr->name);
385 plugin_dispatch_values (&vl);
386 } /* for (ptr = head; ptr != NULL; ptr = ptr->next) */
388 rrdc_stats_free (head);
393 static int rc_init (void)
395 if (config_collect_stats)
396 plugin_register_read ("rrdcached", rc_read);
401 static int rc_write (const data_set_t *ds, const value_list_t *vl,
402 user_data_t __attribute__((unused)) *user_data)
404 char filename[PATH_MAX];
406 char *values_array[2];
409 if (daemon_address == NULL)
411 ERROR ("rrdcached plugin: daemon_address == NULL.");
412 plugin_unregister_write ("rrdcached");
416 if (strcmp (ds->type, vl->type) != 0)
418 ERROR ("rrdcached plugin: DS type does not match value list type");
422 if (value_list_to_filename (filename, sizeof (filename), vl) != 0)
424 ERROR ("rrdcached plugin: value_list_to_filename failed.");
428 if (value_list_to_string (values, sizeof (values), ds, vl) != 0)
430 ERROR ("rrdcached plugin: value_list_to_string failed.");
434 values_array[0] = values;
435 values_array[1] = NULL;
437 if (config_create_files)
441 status = stat (filename, &statbuf);
447 ERROR ("rrdcached plugin: stat (%s) failed: %s",
448 filename, sstrerror (errno, errbuf, sizeof (errbuf)));
452 status = cu_rrd_create_file (filename, ds, vl, &rrdcreate_config);
455 ERROR ("rrdcached plugin: cu_rrd_create_file (%s) failed.",
462 status = rrdc_connect (daemon_address);
465 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
466 daemon_address, status);
470 status = rrdc_update (filename, /* values_num = */ 1, (void *) values_array);
473 ERROR ("rrdcached plugin: rrdc_update (%s, [%s], 1) failed with "
475 filename, values_array[0], status);
482 static int rc_flush (__attribute__((unused)) cdtime_t timeout, /* {{{ */
483 const char *identifier,
484 __attribute__((unused)) user_data_t *ud)
486 char filename[PATH_MAX + 1];
489 if (identifier == NULL)
493 ssnprintf (filename, sizeof (filename), "%s/%s.rrd", datadir, identifier);
495 ssnprintf (filename, sizeof (filename), "%s.rrd", identifier);
497 status = rrdc_connect (daemon_address);
500 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
501 daemon_address, status);
505 status = rrdc_flush (filename);
508 ERROR ("rrdcached plugin: rrdc_flush (%s) failed with status %i.",
512 DEBUG ("rrdcached plugin: rrdc_flush (%s): Success.", filename);
515 } /* }}} int rc_flush */
517 static int rc_shutdown (void)
521 } /* int rc_shutdown */
523 void module_register (void)
525 plugin_register_complex_config ("rrdcached", rc_config);
526 plugin_register_init ("rrdcached", rc_init);
527 plugin_register_shutdown ("rrdcached", rc_shutdown);
528 } /* void module_register */
531 * vim: set sw=2 sts=2 et :