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 char *datadir = NULL;
35 static char *daemon_address = NULL;
36 static int config_create_files = 1;
37 static int 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
52 static int value_list_to_string (char *buffer, int buffer_len,
53 const data_set_t *ds, const value_list_t *vl)
60 assert (0 == strcmp (ds->type, vl->type));
62 memset (buffer, '\0', buffer_len);
64 t = CDTIME_T_TO_TIME_T (vl->time);
65 status = ssnprintf (buffer, buffer_len, "%lu", (unsigned long) t);
66 if ((status < 1) || (status >= buffer_len))
70 for (i = 0; i < ds->ds_num; i++)
72 if ((ds->ds[i].type != DS_TYPE_COUNTER)
73 && (ds->ds[i].type != DS_TYPE_GAUGE)
74 && (ds->ds[i].type != DS_TYPE_DERIVE)
75 && (ds->ds[i].type != DS_TYPE_ABSOLUTE))
78 if (ds->ds[i].type == DS_TYPE_COUNTER)
80 status = ssnprintf (buffer + offset, buffer_len - offset,
81 ":%llu", vl->values[i].counter);
83 else if (ds->ds[i].type == DS_TYPE_GAUGE)
85 status = ssnprintf (buffer + offset, buffer_len - offset,
86 ":%f", vl->values[i].gauge);
88 else if (ds->ds[i].type == DS_TYPE_DERIVE) {
89 status = ssnprintf (buffer + offset, buffer_len - offset,
90 ":%"PRIi64, vl->values[i].derive);
92 else /* if (ds->ds[i].type == DS_TYPE_ABSOLUTE) */ {
93 status = ssnprintf (buffer + offset, buffer_len - offset,
94 ":%"PRIu64, vl->values[i].absolute);
98 if ((status < 1) || (status >= (buffer_len - offset)))
102 } /* for ds->ds_num */
105 } /* int value_list_to_string */
107 static int value_list_to_filename (char *buffer, int buffer_len,
108 const data_set_t *ds, const value_list_t *vl)
113 assert (0 == strcmp (ds->type, vl->type));
117 status = ssnprintf (buffer + offset, buffer_len - offset,
119 if ((status < 1) || (status >= buffer_len - offset))
124 status = ssnprintf (buffer + offset, buffer_len - offset,
126 if ((status < 1) || (status >= buffer_len - offset))
130 if (strlen (vl->plugin_instance) > 0)
131 status = ssnprintf (buffer + offset, buffer_len - offset,
132 "%s-%s/", vl->plugin, vl->plugin_instance);
134 status = ssnprintf (buffer + offset, buffer_len - offset,
136 if ((status < 1) || (status >= buffer_len - offset))
140 if (strlen (vl->type_instance) > 0)
141 status = ssnprintf (buffer + offset, buffer_len - offset,
142 "%s-%s", vl->type, vl->type_instance);
144 status = ssnprintf (buffer + offset, buffer_len - offset,
146 if ((status < 1) || (status >= buffer_len - offset))
150 strncpy (buffer + offset, ".rrd", buffer_len - offset);
151 buffer[buffer_len - 1] = 0;
154 } /* int value_list_to_filename */
156 static const char *config_get_string (oconfig_item_t *ci)
158 if ((ci->children_num != 0) || (ci->values_num != 1)
159 || (ci->values[0].type != OCONFIG_TYPE_STRING))
161 ERROR ("rrdcached plugin: %s expects a single string argument.",
166 return (ci->values[0].value.string);
167 } /* const char *config_get_string */
169 static int rc_config (oconfig_item_t *ci)
173 for (i = 0; i < ci->children_num; ++i) {
174 const char *key = ci->children[i].key;
175 const char *value = config_get_string (ci->children + i);
177 if (value == NULL) /* config_get_strings prints error message */
180 if (strcasecmp ("DataDir", key) == 0)
184 datadir = strdup (value);
187 int len = strlen (datadir);
188 while ((len > 0) && (datadir[len - 1] == '/'))
200 else if (strcasecmp ("DaemonAddress", key) == 0)
202 sfree (daemon_address);
203 daemon_address = strdup (value);
204 if (daemon_address == NULL)
206 ERROR ("rrdcached plugin: strdup failed.");
210 else if (strcasecmp ("CreateFiles", key) == 0)
212 if (IS_FALSE (value))
213 config_create_files = 0;
215 config_create_files = 1;
217 else if (strcasecmp ("CollectStatistics", key) == 0)
219 if (IS_FALSE (value))
220 config_collect_stats = 0;
222 config_collect_stats = 1;
226 WARNING ("rrdcached plugin: Ignoring invalid option %s.", key);
231 } /* int rc_config */
233 static int rc_read (void)
240 value_list_t vl = VALUE_LIST_INIT;
242 if (daemon_address == NULL)
245 if (config_collect_stats == 0)
251 if ((strncmp ("unix:", daemon_address, strlen ("unix:")) == 0)
252 || (daemon_address[0] == '/'))
253 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
255 sstrncpy (vl.host, daemon_address, sizeof (vl.host));
256 sstrncpy (vl.plugin, "rrdcached", sizeof (vl.plugin));
259 status = rrdc_stats_get (&head);
262 ERROR ("rrdcached plugin: rrdc_stats_get failed with status %i.", status);
266 for (ptr = head; ptr != NULL; ptr = ptr->next)
268 if (ptr->type == RRDC_STATS_TYPE_GAUGE)
269 values[0].gauge = (gauge_t) ptr->value.gauge;
270 else if (ptr->type == RRDC_STATS_TYPE_COUNTER)
271 values[0].counter = (counter_t) ptr->value.counter;
275 if (strcasecmp ("QueueLength", ptr->name) == 0)
277 sstrncpy (vl.type, "queue_length", sizeof (vl.type));
278 sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
280 else if (strcasecmp ("UpdatesWritten", ptr->name) == 0)
282 sstrncpy (vl.type, "operations", sizeof (vl.type));
283 sstrncpy (vl.type_instance, "write-updates", sizeof (vl.type_instance));
285 else if (strcasecmp ("DataSetsWritten", ptr->name) == 0)
287 sstrncpy (vl.type, "operations", sizeof (vl.type));
288 sstrncpy (vl.type_instance, "write-data_sets",
289 sizeof (vl.type_instance));
291 else if (strcasecmp ("TreeNodesNumber", ptr->name) == 0)
293 sstrncpy (vl.type, "gauge", sizeof (vl.type));
294 sstrncpy (vl.type_instance, "tree_nodes", sizeof (vl.type_instance));
296 else if (strcasecmp ("TreeDepth", ptr->name) == 0)
298 sstrncpy (vl.type, "gauge", sizeof (vl.type));
299 sstrncpy (vl.type_instance, "tree_depth", sizeof (vl.type_instance));
301 else if (strcasecmp ("FlushesReceived", ptr->name) == 0)
303 sstrncpy (vl.type, "operations", sizeof (vl.type));
304 sstrncpy (vl.type_instance, "receive-flush", sizeof (vl.type_instance));
306 else if (strcasecmp ("JournalBytes", ptr->name) == 0)
308 sstrncpy (vl.type, "counter", sizeof (vl.type));
309 sstrncpy (vl.type_instance, "journal-bytes", sizeof (vl.type_instance));
311 else if (strcasecmp ("JournalRotate", ptr->name) == 0)
313 sstrncpy (vl.type, "counter", sizeof (vl.type));
314 sstrncpy (vl.type_instance, "journal-rotates", sizeof (vl.type_instance));
316 else if (strcasecmp ("UpdatesReceived", ptr->name) == 0)
318 sstrncpy (vl.type, "operations", sizeof (vl.type));
319 sstrncpy (vl.type_instance, "receive-update", sizeof (vl.type_instance));
323 DEBUG ("rrdcached plugin: rc_read: Unknown statistic `%s'.", ptr->name);
327 plugin_dispatch_values (&vl);
328 } /* for (ptr = head; ptr != NULL; ptr = ptr->next) */
330 rrdc_stats_free (head);
335 static int rc_init (void)
337 if (config_collect_stats != 0)
338 plugin_register_read ("rrdcached", rc_read);
343 static int rc_write (const data_set_t *ds, const value_list_t *vl,
344 user_data_t __attribute__((unused)) *user_data)
346 char filename[PATH_MAX];
348 char *values_array[2];
351 if (daemon_address == NULL)
353 ERROR ("rrdcached plugin: daemon_address == NULL.");
354 plugin_unregister_write ("rrdcached");
358 if (strcmp (ds->type, vl->type) != 0)
360 ERROR ("rrdcached plugin: DS type does not match value list type");
364 if (value_list_to_filename (filename, sizeof (filename), ds, vl) != 0)
366 ERROR ("rrdcached plugin: value_list_to_filename failed.");
370 if (value_list_to_string (values, sizeof (values), ds, vl) != 0)
372 ERROR ("rrdcached plugin: value_list_to_string failed.");
376 values_array[0] = values;
377 values_array[1] = NULL;
379 if (config_create_files != 0)
383 status = stat (filename, &statbuf);
389 ERROR ("rrdcached plugin: stat (%s) failed: %s",
390 filename, sstrerror (errno, errbuf, sizeof (errbuf)));
394 status = cu_rrd_create_file (filename, ds, vl, &rrdcreate_config);
397 ERROR ("rrdcached plugin: cu_rrd_create_file (%s) failed.",
404 status = rrdc_connect (daemon_address);
407 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
408 daemon_address, status);
412 status = rrdc_update (filename, /* values_num = */ 1, (void *) values_array);
415 ERROR ("rrdcached plugin: rrdc_update (%s, [%s], 1) failed with "
417 filename, values_array[0], status);
424 static int rc_flush (__attribute__((unused)) cdtime_t timeout, /* {{{ */
425 const char *identifier,
426 __attribute__((unused)) user_data_t *ud)
428 char filename[PATH_MAX + 1];
431 if (identifier == NULL)
435 ssnprintf (filename, sizeof (filename), "%s/%s.rrd", datadir, identifier);
437 ssnprintf (filename, sizeof (filename), "%s.rrd", identifier);
439 status = rrdc_connect (daemon_address);
442 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
443 daemon_address, status);
447 status = rrdc_flush (filename);
450 ERROR ("rrdcached plugin: rrdc_flush (%s) failed with status %i.",
454 DEBUG ("rrdcached plugin: rrdc_flush (%s): Success.", filename);
457 } /* }}} int rc_flush */
459 static int rc_shutdown (void)
463 } /* int rc_shutdown */
465 void module_register (void)
467 plugin_register_complex_config ("rrdcached", rc_config);
468 plugin_register_init ("rrdcached", rc_init);
469 plugin_register_write ("rrdcached", rc_write, /* user_data = */ NULL);
470 plugin_register_flush ("rrdcached", rc_flush, /* user_data = */ NULL);
471 plugin_register_shutdown ("rrdcached", rc_shutdown);
472 } /* void module_register */
475 * vim: set sw=2 sts=2 et :