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,
57 static int rc_write (const data_set_t *ds, const value_list_t *vl,
58 user_data_t __attribute__((unused)) *user_data);
59 static int rc_flush (__attribute__((unused)) cdtime_t timeout,
60 const char *identifier, __attribute__((unused)) user_data_t *ud);
62 static int value_list_to_string (char *buffer, int buffer_len,
63 const data_set_t *ds, const value_list_t *vl)
70 assert (0 == strcmp (ds->type, vl->type));
72 memset (buffer, '\0', buffer_len);
74 t = CDTIME_T_TO_TIME_T (vl->time);
75 status = ssnprintf (buffer, buffer_len, "%lu", (unsigned long) t);
76 if ((status < 1) || (status >= buffer_len))
80 for (i = 0; i < ds->ds_num; i++)
82 if ((ds->ds[i].type != DS_TYPE_COUNTER)
83 && (ds->ds[i].type != DS_TYPE_GAUGE)
84 && (ds->ds[i].type != DS_TYPE_DERIVE)
85 && (ds->ds[i].type != DS_TYPE_ABSOLUTE))
88 if (ds->ds[i].type == DS_TYPE_COUNTER)
90 status = ssnprintf (buffer + offset, buffer_len - offset,
91 ":%llu", vl->values[i].counter);
93 else if (ds->ds[i].type == DS_TYPE_GAUGE)
95 status = ssnprintf (buffer + offset, buffer_len - offset,
96 ":%f", vl->values[i].gauge);
98 else if (ds->ds[i].type == DS_TYPE_DERIVE) {
99 status = ssnprintf (buffer + offset, buffer_len - offset,
100 ":%"PRIi64, vl->values[i].derive);
102 else /* if (ds->ds[i].type == DS_TYPE_ABSOLUTE) */ {
103 status = ssnprintf (buffer + offset, buffer_len - offset,
104 ":%"PRIu64, vl->values[i].absolute);
108 if ((status < 1) || (status >= (buffer_len - offset)))
112 } /* for ds->ds_num */
115 } /* int value_list_to_string */
117 static int value_list_to_filename (char *buffer, size_t buffer_size,
118 value_list_t const *vl)
120 char const suffix[] = ".rrd";
124 status = FORMAT_VL (buffer, buffer_size, vl);
128 len = strlen (buffer);
129 assert (len < buffer_size);
133 if (buffer_size <= sizeof (suffix))
136 memcpy (buffer, suffix, sizeof (suffix));
138 } /* int value_list_to_filename */
140 static int rc_config_get_int_positive (oconfig_item_t const *ci, int *ret)
145 status = cf_util_get_int (ci, &tmp);
153 } /* int rc_config_get_int_positive */
155 static int rc_config_get_xff (oconfig_item_t const *ci, double *ret)
159 if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
161 ERROR ("rrdcached plugin: The \"%s\" needs exactly one numeric argument "
162 "in the range [0.0, 1.0)", ci->key);
166 value = ci->values[0].value.number;
167 if ((value >= 0.0) && (value < 1.0))
173 ERROR ("rrdcached plugin: The \"%s\" needs exactly one numeric argument "
174 "in the range [0.0, 1.0)", ci->key);
176 } /* int rc_config_get_xff */
178 static int rc_config_add_timespan (int timespan)
185 tmp = realloc (rrdcreate_config.timespans,
186 sizeof (*rrdcreate_config.timespans)
187 * (rrdcreate_config.timespans_num + 1));
190 rrdcreate_config.timespans = tmp;
192 rrdcreate_config.timespans[rrdcreate_config.timespans_num] = timespan;
193 rrdcreate_config.timespans_num++;
196 } /* int rc_config_add_timespan */
198 static int rc_config (oconfig_item_t *ci)
202 for (i = 0; i < ci->children_num; i++)
204 oconfig_item_t const *child = ci->children + i;
205 const char *key = child->key;
208 if (strcasecmp ("DataDir", key) == 0)
210 status = cf_util_get_string (child, &datadir);
213 int len = strlen (datadir);
215 while ((len > 0) && (datadir[len - 1] == '/'))
225 else if (strcasecmp ("DaemonAddress", key) == 0)
226 status = cf_util_get_string (child, &daemon_address);
227 else if (strcasecmp ("CreateFiles", key) == 0)
228 status = cf_util_get_boolean (child, &config_create_files);
229 else if (strcasecmp ("CreateFilesAsync", key) == 0)
230 status = cf_util_get_boolean (child, &rrdcreate_config.async);
231 else if (strcasecmp ("CollectStatistics", key) == 0)
232 status = cf_util_get_boolean (child, &config_collect_stats);
233 else if (strcasecmp ("StepSize", key) == 0)
237 status = rc_config_get_int_positive (child, &tmp);
239 rrdcreate_config.stepsize = (unsigned long) tmp;
241 else if (strcasecmp ("HeartBeat", key) == 0)
242 status = rc_config_get_int_positive (child, &rrdcreate_config.heartbeat);
243 else if (strcasecmp ("RRARows", key) == 0)
244 status = rc_config_get_int_positive (child, &rrdcreate_config.rrarows);
245 else if (strcasecmp ("RRATimespan", key) == 0)
248 status = rc_config_get_int_positive (child, &tmp);
250 status = rc_config_add_timespan (tmp);
252 else if (strcasecmp ("XFF", key) == 0)
253 status = rc_config_get_xff (child, &rrdcreate_config.xff);
256 WARNING ("rrdcached plugin: Ignoring invalid option %s.", key);
261 WARNING ("rrdcached plugin: Handling the \"%s\" option failed.", key);
264 if (daemon_address != NULL)
266 plugin_register_write ("rrdcached", rc_write, /* user_data = */ NULL);
267 plugin_register_flush ("rrdcached", rc_flush, /* user_data = */ NULL);
270 } /* int rc_config */
272 static int rc_read (void)
279 value_list_t vl = VALUE_LIST_INIT;
281 if (daemon_address == NULL)
284 if (!config_collect_stats)
290 if ((strncmp ("unix:", daemon_address, strlen ("unix:")) == 0)
291 || (daemon_address[0] == '/'))
292 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
294 sstrncpy (vl.host, daemon_address, sizeof (vl.host));
295 sstrncpy (vl.plugin, "rrdcached", sizeof (vl.plugin));
297 status = rrdc_connect (daemon_address);
300 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
301 daemon_address, status);
306 status = rrdc_stats_get (&head);
309 ERROR ("rrdcached plugin: rrdc_stats_get failed with status %i.", status);
313 for (ptr = head; ptr != NULL; ptr = ptr->next)
315 if (ptr->type == RRDC_STATS_TYPE_GAUGE)
316 values[0].gauge = (gauge_t) ptr->value.gauge;
317 else if (ptr->type == RRDC_STATS_TYPE_COUNTER)
318 values[0].counter = (counter_t) ptr->value.counter;
322 if (strcasecmp ("QueueLength", ptr->name) == 0)
324 sstrncpy (vl.type, "queue_length", sizeof (vl.type));
325 sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
327 else if (strcasecmp ("UpdatesWritten", ptr->name) == 0)
329 sstrncpy (vl.type, "operations", sizeof (vl.type));
330 sstrncpy (vl.type_instance, "write-updates", sizeof (vl.type_instance));
332 else if (strcasecmp ("DataSetsWritten", ptr->name) == 0)
334 sstrncpy (vl.type, "operations", sizeof (vl.type));
335 sstrncpy (vl.type_instance, "write-data_sets",
336 sizeof (vl.type_instance));
338 else if (strcasecmp ("TreeNodesNumber", ptr->name) == 0)
340 sstrncpy (vl.type, "gauge", sizeof (vl.type));
341 sstrncpy (vl.type_instance, "tree_nodes", sizeof (vl.type_instance));
343 else if (strcasecmp ("TreeDepth", ptr->name) == 0)
345 sstrncpy (vl.type, "gauge", sizeof (vl.type));
346 sstrncpy (vl.type_instance, "tree_depth", sizeof (vl.type_instance));
348 else if (strcasecmp ("FlushesReceived", ptr->name) == 0)
350 sstrncpy (vl.type, "operations", sizeof (vl.type));
351 sstrncpy (vl.type_instance, "receive-flush", sizeof (vl.type_instance));
353 else if (strcasecmp ("JournalBytes", ptr->name) == 0)
355 sstrncpy (vl.type, "counter", sizeof (vl.type));
356 sstrncpy (vl.type_instance, "journal-bytes", sizeof (vl.type_instance));
358 else if (strcasecmp ("JournalRotate", ptr->name) == 0)
360 sstrncpy (vl.type, "counter", sizeof (vl.type));
361 sstrncpy (vl.type_instance, "journal-rotates", sizeof (vl.type_instance));
363 else if (strcasecmp ("UpdatesReceived", ptr->name) == 0)
365 sstrncpy (vl.type, "operations", sizeof (vl.type));
366 sstrncpy (vl.type_instance, "receive-update", sizeof (vl.type_instance));
370 DEBUG ("rrdcached plugin: rc_read: Unknown statistic `%s'.", ptr->name);
374 plugin_dispatch_values (&vl);
375 } /* for (ptr = head; ptr != NULL; ptr = ptr->next) */
377 rrdc_stats_free (head);
382 static int rc_init (void)
384 if (config_collect_stats)
385 plugin_register_read ("rrdcached", rc_read);
390 static int rc_write (const data_set_t *ds, const value_list_t *vl,
391 user_data_t __attribute__((unused)) *user_data)
393 char filename[PATH_MAX];
395 char *values_array[2];
398 if (daemon_address == NULL)
400 ERROR ("rrdcached plugin: daemon_address == NULL.");
401 plugin_unregister_write ("rrdcached");
405 if (strcmp (ds->type, vl->type) != 0)
407 ERROR ("rrdcached plugin: DS type does not match value list type");
411 if (value_list_to_filename (filename, sizeof (filename), vl) != 0)
413 ERROR ("rrdcached plugin: value_list_to_filename failed.");
417 if (value_list_to_string (values, sizeof (values), ds, vl) != 0)
419 ERROR ("rrdcached plugin: value_list_to_string failed.");
423 values_array[0] = values;
424 values_array[1] = NULL;
426 if (config_create_files)
430 status = stat (filename, &statbuf);
436 ERROR ("rrdcached plugin: stat (%s) failed: %s",
437 filename, sstrerror (errno, errbuf, sizeof (errbuf)));
441 status = cu_rrd_create_file (filename, ds, vl, &rrdcreate_config);
444 ERROR ("rrdcached plugin: cu_rrd_create_file (%s) failed.",
448 else if (rrdcreate_config.async)
453 status = rrdc_connect (daemon_address);
456 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
457 daemon_address, status);
461 status = rrdc_update (filename, /* values_num = */ 1, (void *) values_array);
464 ERROR ("rrdcached plugin: rrdc_update (%s, [%s], 1) failed with "
466 filename, values_array[0], status);
473 static int rc_flush (__attribute__((unused)) cdtime_t timeout, /* {{{ */
474 const char *identifier,
475 __attribute__((unused)) user_data_t *ud)
477 char filename[PATH_MAX + 1];
480 if (identifier == NULL)
484 ssnprintf (filename, sizeof (filename), "%s/%s.rrd", datadir, identifier);
486 ssnprintf (filename, sizeof (filename), "%s.rrd", identifier);
488 status = rrdc_connect (daemon_address);
491 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
492 daemon_address, status);
496 status = rrdc_flush (filename);
499 ERROR ("rrdcached plugin: rrdc_flush (%s) failed with status %i.",
503 DEBUG ("rrdcached plugin: rrdc_flush (%s): Success.", filename);
506 } /* }}} int rc_flush */
508 static int rc_shutdown (void)
512 } /* int rc_shutdown */
514 void module_register (void)
516 plugin_register_complex_config ("rrdcached", rc_config);
517 plugin_register_init ("rrdcached", rc_init);
518 plugin_register_shutdown ("rrdcached", rc_shutdown);
519 } /* void module_register */
522 * vim: set sw=2 sts=2 et :