2 * collectd - src/rrdcached.c
3 * Copyright (C) 2008 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 verplant.org>
25 #include "utils_rrdcreate.h"
29 #include <rrd_client.h>
34 static const char *config_keys[] =
41 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
43 static char *datadir = NULL;
44 static char *daemon_address = NULL;
45 static int config_create_files = 1;
46 static int config_collect_stats = 1;
47 static rrdcreate_config_t rrdcreate_config =
54 /* timespans = */ NULL,
55 /* timespans_num = */ 0,
57 /* consolidation_functions = */ NULL,
58 /* consolidation_functions_num = */ 0
61 static int value_list_to_string (char *buffer, int buffer_len,
62 const data_set_t *ds, const value_list_t *vl)
69 assert (0 == strcmp (ds->type, vl->type));
71 memset (buffer, '\0', buffer_len);
73 t = CDTIME_T_TO_TIME_T (vl->time);
74 status = ssnprintf (buffer, buffer_len, "%lu", (unsigned long) t);
75 if ((status < 1) || (status >= buffer_len))
79 for (i = 0; i < ds->ds_num; i++)
81 if ((ds->ds[i].type != DS_TYPE_COUNTER)
82 && (ds->ds[i].type != DS_TYPE_GAUGE)
83 && (ds->ds[i].type != DS_TYPE_DERIVE)
84 && (ds->ds[i].type != DS_TYPE_ABSOLUTE))
87 if (ds->ds[i].type == DS_TYPE_COUNTER)
89 status = ssnprintf (buffer + offset, buffer_len - offset,
90 ":%llu", vl->values[i].counter);
92 else if (ds->ds[i].type == DS_TYPE_GAUGE)
94 status = ssnprintf (buffer + offset, buffer_len - offset,
95 ":%f", vl->values[i].gauge);
97 else if (ds->ds[i].type == DS_TYPE_DERIVE) {
98 status = ssnprintf (buffer + offset, buffer_len - offset,
99 ":%"PRIi64, vl->values[i].derive);
101 else /* if (ds->ds[i].type == DS_TYPE_ABSOLUTE) */ {
102 status = ssnprintf (buffer + offset, buffer_len - offset,
103 ":%"PRIu64, vl->values[i].absolute);
107 if ((status < 1) || (status >= (buffer_len - offset)))
111 } /* for ds->ds_num */
114 } /* int value_list_to_string */
116 static int value_list_to_filename (char *buffer, int buffer_len,
117 const data_set_t *ds, const value_list_t *vl)
122 assert (0 == strcmp (ds->type, vl->type));
126 status = ssnprintf (buffer + offset, buffer_len - offset,
128 if ((status < 1) || (status >= buffer_len - offset))
133 status = ssnprintf (buffer + offset, buffer_len - offset,
135 if ((status < 1) || (status >= buffer_len - offset))
139 if (strlen (vl->plugin_instance) > 0)
140 status = ssnprintf (buffer + offset, buffer_len - offset,
141 "%s-%s/", vl->plugin, vl->plugin_instance);
143 status = ssnprintf (buffer + offset, buffer_len - offset,
145 if ((status < 1) || (status >= buffer_len - offset))
149 if (strlen (vl->type_instance) > 0)
150 status = ssnprintf (buffer + offset, buffer_len - offset,
151 "%s-%s", vl->type, vl->type_instance);
153 status = ssnprintf (buffer + offset, buffer_len - offset,
155 if ((status < 1) || (status >= buffer_len - offset))
159 strncpy (buffer + offset, ".rrd", buffer_len - offset);
160 buffer[buffer_len - 1] = 0;
163 } /* int value_list_to_filename */
165 static int rc_config (const char *key, const char *value)
167 if (strcasecmp ("DataDir", key) == 0)
171 datadir = strdup (value);
174 int len = strlen (datadir);
175 while ((len > 0) && (datadir[len - 1] == '/'))
187 else if (strcasecmp ("DaemonAddress", key) == 0)
189 sfree (daemon_address);
190 daemon_address = strdup (value);
191 if (daemon_address == NULL)
193 ERROR ("rrdcached plugin: strdup failed.");
197 else if (strcasecmp ("CreateFiles", key) == 0)
199 if (IS_FALSE (value))
200 config_create_files = 0;
202 config_create_files = 1;
204 else if (strcasecmp ("CollectStatistics", key) == 0)
206 if (IS_FALSE (value))
207 config_collect_stats = 0;
209 config_collect_stats = 1;
216 } /* int rc_config */
218 static int rc_read (void)
225 value_list_t vl = VALUE_LIST_INIT;
227 if (daemon_address == NULL)
230 if (config_collect_stats == 0)
236 if ((strncmp ("unix:", daemon_address, strlen ("unix:")) == 0)
237 || (daemon_address[0] == '/'))
238 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
240 sstrncpy (vl.host, daemon_address, sizeof (vl.host));
241 sstrncpy (vl.plugin, "rrdcached", sizeof (vl.plugin));
244 status = rrdc_stats_get (&head);
247 ERROR ("rrdcached plugin: rrdc_stats_get failed with status %i.", status);
251 for (ptr = head; ptr != NULL; ptr = ptr->next)
253 if (ptr->type == RRDC_STATS_TYPE_GAUGE)
254 values[0].gauge = (gauge_t) ptr->value.gauge;
255 else if (ptr->type == RRDC_STATS_TYPE_COUNTER)
256 values[0].counter = (counter_t) ptr->value.counter;
260 if (strcasecmp ("QueueLength", ptr->name) == 0)
262 sstrncpy (vl.type, "queue_length", sizeof (vl.type));
263 sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
265 else if (strcasecmp ("UpdatesWritten", ptr->name) == 0)
267 sstrncpy (vl.type, "operations", sizeof (vl.type));
268 sstrncpy (vl.type_instance, "write-updates", sizeof (vl.type_instance));
270 else if (strcasecmp ("DataSetsWritten", ptr->name) == 0)
272 sstrncpy (vl.type, "operations", sizeof (vl.type));
273 sstrncpy (vl.type_instance, "write-data_sets",
274 sizeof (vl.type_instance));
276 else if (strcasecmp ("TreeNodesNumber", ptr->name) == 0)
278 sstrncpy (vl.type, "gauge", sizeof (vl.type));
279 sstrncpy (vl.type_instance, "tree_nodes", sizeof (vl.type_instance));
281 else if (strcasecmp ("TreeDepth", ptr->name) == 0)
283 sstrncpy (vl.type, "gauge", sizeof (vl.type));
284 sstrncpy (vl.type_instance, "tree_depth", sizeof (vl.type_instance));
286 else if (strcasecmp ("FlushesReceived", ptr->name) == 0)
288 sstrncpy (vl.type, "operations", sizeof (vl.type));
289 sstrncpy (vl.type_instance, "receive-flush", sizeof (vl.type_instance));
291 else if (strcasecmp ("JournalBytes", ptr->name) == 0)
293 sstrncpy (vl.type, "counter", sizeof (vl.type));
294 sstrncpy (vl.type_instance, "journal-bytes", sizeof (vl.type_instance));
296 else if (strcasecmp ("JournalRotate", ptr->name) == 0)
298 sstrncpy (vl.type, "counter", sizeof (vl.type));
299 sstrncpy (vl.type_instance, "journal-rotates", sizeof (vl.type_instance));
301 else if (strcasecmp ("UpdatesReceived", ptr->name) == 0)
303 sstrncpy (vl.type, "operations", sizeof (vl.type));
304 sstrncpy (vl.type_instance, "receive-update", sizeof (vl.type_instance));
308 DEBUG ("rrdcached plugin: rc_read: Unknown statistic `%s'.", ptr->name);
312 plugin_dispatch_values (&vl);
313 } /* for (ptr = head; ptr != NULL; ptr = ptr->next) */
315 rrdc_stats_free (head);
320 static int rc_init (void)
322 if (config_collect_stats != 0)
323 plugin_register_read ("rrdcached", rc_read);
328 static int rc_write (const data_set_t *ds, const value_list_t *vl,
329 user_data_t __attribute__((unused)) *user_data)
331 char filename[PATH_MAX];
333 char *values_array[2];
336 if (daemon_address == NULL)
338 ERROR ("rrdcached plugin: daemon_address == NULL.");
339 plugin_unregister_write ("rrdcached");
343 if (strcmp (ds->type, vl->type) != 0)
345 ERROR ("rrdcached plugin: DS type does not match value list type");
349 if (value_list_to_filename (filename, sizeof (filename), ds, vl) != 0)
351 ERROR ("rrdcached plugin: value_list_to_filename failed.");
355 if (value_list_to_string (values, sizeof (values), ds, vl) != 0)
357 ERROR ("rrdcached plugin: value_list_to_string failed.");
361 values_array[0] = values;
362 values_array[1] = NULL;
364 if (config_create_files != 0)
368 status = stat (filename, &statbuf);
374 ERROR ("rrdcached plugin: stat (%s) failed: %s",
375 filename, sstrerror (errno, errbuf, sizeof (errbuf)));
379 status = cu_rrd_create_file (filename, ds, vl, &rrdcreate_config);
382 ERROR ("rrdcached plugin: cu_rrd_create_file (%s) failed.",
389 status = rrdc_connect (daemon_address);
392 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
393 daemon_address, status);
397 status = rrdc_update (filename, /* values_num = */ 1, (void *) values_array);
400 ERROR ("rrdcached plugin: rrdc_update (%s, [%s], 1) failed with "
402 filename, values_array[0], status);
409 static int rc_flush (__attribute__((unused)) cdtime_t timeout, /* {{{ */
410 const char *identifier,
411 __attribute__((unused)) user_data_t *ud)
413 char filename[PATH_MAX + 1];
416 if (identifier == NULL)
420 ssnprintf (filename, sizeof (filename), "%s/%s.rrd", datadir, identifier);
422 ssnprintf (filename, sizeof (filename), "%s.rrd", identifier);
424 status = rrdc_connect (daemon_address);
427 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
428 daemon_address, status);
432 status = rrdc_flush (filename);
435 ERROR ("rrdcached plugin: rrdc_flush (%s) failed with status %i.",
439 DEBUG ("rrdcached plugin: rrdc_flush (%s): Success.", filename);
442 } /* }}} int rc_flush */
444 static int rc_shutdown (void)
448 } /* int rc_shutdown */
450 void module_register (void)
452 plugin_register_config ("rrdcached", rc_config,
453 config_keys, config_keys_num);
454 plugin_register_init ("rrdcached", rc_init);
455 plugin_register_write ("rrdcached", rc_write, /* user_data = */ NULL);
456 plugin_register_flush ("rrdcached", rc_flush, /* user_data = */ NULL);
457 plugin_register_shutdown ("rrdcached", rc_shutdown);
458 } /* void module_register */
461 * vim: set sw=2 sts=2 et :