2 * collectd - src/rrdcached.c
3 * Copyright (C) 2008-2012 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, int buffer_len,
116 const data_set_t *ds, const value_list_t *vl)
121 assert (0 == strcmp (ds->type, vl->type));
125 status = ssnprintf (buffer + offset, buffer_len - offset,
127 if ((status < 1) || (status >= buffer_len - offset))
132 status = ssnprintf (buffer + offset, buffer_len - offset,
134 if ((status < 1) || (status >= buffer_len - offset))
138 if (strlen (vl->plugin_instance) > 0)
139 status = ssnprintf (buffer + offset, buffer_len - offset,
140 "%s-%s/", vl->plugin, vl->plugin_instance);
142 status = ssnprintf (buffer + offset, buffer_len - offset,
144 if ((status < 1) || (status >= buffer_len - offset))
148 if (strlen (vl->type_instance) > 0)
149 status = ssnprintf (buffer + offset, buffer_len - offset,
150 "%s-%s", vl->type, vl->type_instance);
152 status = ssnprintf (buffer + offset, buffer_len - offset,
154 if ((status < 1) || (status >= buffer_len - offset))
158 strncpy (buffer + offset, ".rrd", buffer_len - offset);
159 buffer[buffer_len - 1] = 0;
162 } /* int value_list_to_filename */
164 static int rc_config_get_int_positive (oconfig_item_t const *ci, int *ret)
169 status = cf_util_get_int (ci, &tmp);
177 } /* int rc_config_get_int_positive */
179 static int rc_config (oconfig_item_t *ci)
183 for (i = 0; i < ci->children_num; i++)
185 oconfig_item_t const *child = ci->children + i;
186 const char *key = child->key;
189 if (strcasecmp ("DataDir", key) == 0)
191 status = cf_util_get_string (child, &datadir);
194 int len = strlen (datadir);
196 while ((len > 0) && (datadir[len - 1] == '/'))
206 else if (strcasecmp ("DaemonAddress", key) == 0)
207 status = cf_util_get_string (child, &daemon_address);
208 else if (strcasecmp ("CreateFiles", key) == 0)
209 status = cf_util_get_boolean (child, &config_create_files);
210 else if (strcasecmp ("CollectStatistics", key) == 0)
211 status = cf_util_get_boolean (child, &config_collect_stats);
212 else if (strcasecmp ("StepSize", key) == 0)
213 status = rc_config_get_int_positive (child, &rrdcreate_config.stepsize);
214 else if (strcasecmp ("HeartBeat", key) == 0)
215 status = rc_config_get_int_positive (child, &rrdcreate_config.heartbeat);
216 else if (strcasecmp ("RRARows", key) == 0)
217 status = rc_config_get_int_positive (child, &rrdcreate_config.rrarows);
220 WARNING ("rrdcached plugin: Ignoring invalid option %s.", key);
225 WARNING ("rrdcached plugin: Handling the \"%s\" option failed.", key);
228 if (daemon_address != NULL)
230 plugin_register_write ("rrdcached", rc_write, /* user_data = */ NULL);
231 plugin_register_flush ("rrdcached", rc_flush, /* user_data = */ NULL);
234 } /* int rc_config */
236 static int rc_read (void)
243 value_list_t vl = VALUE_LIST_INIT;
245 if (daemon_address == NULL)
248 if (!config_collect_stats)
254 if ((strncmp ("unix:", daemon_address, strlen ("unix:")) == 0)
255 || (daemon_address[0] == '/'))
256 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
258 sstrncpy (vl.host, daemon_address, sizeof (vl.host));
259 sstrncpy (vl.plugin, "rrdcached", sizeof (vl.plugin));
262 status = rrdc_stats_get (&head);
265 ERROR ("rrdcached plugin: rrdc_stats_get failed with status %i.", status);
269 for (ptr = head; ptr != NULL; ptr = ptr->next)
271 if (ptr->type == RRDC_STATS_TYPE_GAUGE)
272 values[0].gauge = (gauge_t) ptr->value.gauge;
273 else if (ptr->type == RRDC_STATS_TYPE_COUNTER)
274 values[0].counter = (counter_t) ptr->value.counter;
278 if (strcasecmp ("QueueLength", ptr->name) == 0)
280 sstrncpy (vl.type, "queue_length", sizeof (vl.type));
281 sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
283 else if (strcasecmp ("UpdatesWritten", ptr->name) == 0)
285 sstrncpy (vl.type, "operations", sizeof (vl.type));
286 sstrncpy (vl.type_instance, "write-updates", sizeof (vl.type_instance));
288 else if (strcasecmp ("DataSetsWritten", ptr->name) == 0)
290 sstrncpy (vl.type, "operations", sizeof (vl.type));
291 sstrncpy (vl.type_instance, "write-data_sets",
292 sizeof (vl.type_instance));
294 else if (strcasecmp ("TreeNodesNumber", ptr->name) == 0)
296 sstrncpy (vl.type, "gauge", sizeof (vl.type));
297 sstrncpy (vl.type_instance, "tree_nodes", sizeof (vl.type_instance));
299 else if (strcasecmp ("TreeDepth", ptr->name) == 0)
301 sstrncpy (vl.type, "gauge", sizeof (vl.type));
302 sstrncpy (vl.type_instance, "tree_depth", sizeof (vl.type_instance));
304 else if (strcasecmp ("FlushesReceived", ptr->name) == 0)
306 sstrncpy (vl.type, "operations", sizeof (vl.type));
307 sstrncpy (vl.type_instance, "receive-flush", sizeof (vl.type_instance));
309 else if (strcasecmp ("JournalBytes", ptr->name) == 0)
311 sstrncpy (vl.type, "counter", sizeof (vl.type));
312 sstrncpy (vl.type_instance, "journal-bytes", sizeof (vl.type_instance));
314 else if (strcasecmp ("JournalRotate", ptr->name) == 0)
316 sstrncpy (vl.type, "counter", sizeof (vl.type));
317 sstrncpy (vl.type_instance, "journal-rotates", sizeof (vl.type_instance));
319 else if (strcasecmp ("UpdatesReceived", ptr->name) == 0)
321 sstrncpy (vl.type, "operations", sizeof (vl.type));
322 sstrncpy (vl.type_instance, "receive-update", sizeof (vl.type_instance));
326 DEBUG ("rrdcached plugin: rc_read: Unknown statistic `%s'.", ptr->name);
330 plugin_dispatch_values (&vl);
331 } /* for (ptr = head; ptr != NULL; ptr = ptr->next) */
333 rrdc_stats_free (head);
338 static int rc_init (void)
340 if (config_collect_stats)
341 plugin_register_read ("rrdcached", rc_read);
346 static int rc_write (const data_set_t *ds, const value_list_t *vl,
347 user_data_t __attribute__((unused)) *user_data)
349 char filename[PATH_MAX];
351 char *values_array[2];
354 if (daemon_address == NULL)
356 ERROR ("rrdcached plugin: daemon_address == NULL.");
357 plugin_unregister_write ("rrdcached");
361 if (strcmp (ds->type, vl->type) != 0)
363 ERROR ("rrdcached plugin: DS type does not match value list type");
367 if (value_list_to_filename (filename, sizeof (filename), ds, vl) != 0)
369 ERROR ("rrdcached plugin: value_list_to_filename failed.");
373 if (value_list_to_string (values, sizeof (values), ds, vl) != 0)
375 ERROR ("rrdcached plugin: value_list_to_string failed.");
379 values_array[0] = values;
380 values_array[1] = NULL;
382 if (config_create_files)
386 status = stat (filename, &statbuf);
392 ERROR ("rrdcached plugin: stat (%s) failed: %s",
393 filename, sstrerror (errno, errbuf, sizeof (errbuf)));
397 status = cu_rrd_create_file (filename, ds, vl, &rrdcreate_config);
400 ERROR ("rrdcached plugin: cu_rrd_create_file (%s) failed.",
407 status = rrdc_connect (daemon_address);
410 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
411 daemon_address, status);
415 status = rrdc_update (filename, /* values_num = */ 1, (void *) values_array);
418 ERROR ("rrdcached plugin: rrdc_update (%s, [%s], 1) failed with "
420 filename, values_array[0], status);
427 static int rc_flush (__attribute__((unused)) cdtime_t timeout, /* {{{ */
428 const char *identifier,
429 __attribute__((unused)) user_data_t *ud)
431 char filename[PATH_MAX + 1];
434 if (identifier == NULL)
438 ssnprintf (filename, sizeof (filename), "%s/%s.rrd", datadir, identifier);
440 ssnprintf (filename, sizeof (filename), "%s.rrd", identifier);
442 status = rrdc_connect (daemon_address);
445 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
446 daemon_address, status);
450 status = rrdc_flush (filename);
453 ERROR ("rrdcached plugin: rrdc_flush (%s) failed with status %i.",
457 DEBUG ("rrdcached plugin: rrdc_flush (%s): Success.", filename);
460 } /* }}} int rc_flush */
462 static int rc_shutdown (void)
466 } /* int rc_shutdown */
468 void module_register (void)
470 plugin_register_complex_config ("rrdcached", rc_config);
471 plugin_register_init ("rrdcached", rc_init);
472 plugin_register_shutdown ("rrdcached", rc_shutdown);
473 } /* void module_register */
476 * vim: set sw=2 sts=2 et :