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"
28 #include <rrd_client.h>
33 static const char *config_keys[] =
40 static int config_keys_num = STATIC_ARRAY_SIZE (config_keys);
42 static char *datadir = NULL;
43 static char *daemon_address = NULL;
44 static int config_create_files = 1;
45 static int config_collect_stats = 1;
46 static rrdcreate_config_t rrdcreate_config =
53 /* timespans = */ NULL,
54 /* timespans_num = */ 0,
56 /* consolidation_functions = */ NULL,
57 /* consolidation_functions_num = */ 0
60 static int value_list_to_string (char *buffer, int buffer_len,
61 const data_set_t *ds, const value_list_t *vl)
67 assert (0 == strcmp (ds->type, vl->type));
69 memset (buffer, '\0', buffer_len);
71 status = ssnprintf (buffer, buffer_len, "%u", (unsigned int) vl->time);
72 if ((status < 1) || (status >= buffer_len))
76 for (i = 0; i < ds->ds_num; i++)
78 if ((ds->ds[i].type != DS_TYPE_COUNTER)
79 && (ds->ds[i].type != DS_TYPE_GAUGE))
82 if (ds->ds[i].type == DS_TYPE_COUNTER)
84 status = ssnprintf (buffer + offset, buffer_len - offset,
85 ":%llu", vl->values[i].counter);
87 else /* if (ds->ds[i].type == DS_TYPE_GAUGE) */
89 status = ssnprintf (buffer + offset, buffer_len - offset,
90 ":%lf", vl->values[i].gauge);
93 if ((status < 1) || (status >= (buffer_len - offset)))
97 } /* for ds->ds_num */
100 } /* int value_list_to_string */
102 static int value_list_to_filename (char *buffer, int buffer_len,
103 const data_set_t *ds, const value_list_t *vl)
108 assert (0 == strcmp (ds->type, vl->type));
112 status = ssnprintf (buffer + offset, buffer_len - offset,
114 if ((status < 1) || (status >= buffer_len - offset))
119 status = ssnprintf (buffer + offset, buffer_len - offset,
121 if ((status < 1) || (status >= buffer_len - offset))
125 if (strlen (vl->plugin_instance) > 0)
126 status = ssnprintf (buffer + offset, buffer_len - offset,
127 "%s-%s/", vl->plugin, vl->plugin_instance);
129 status = ssnprintf (buffer + offset, buffer_len - offset,
131 if ((status < 1) || (status >= buffer_len - offset))
135 if (strlen (vl->type_instance) > 0)
136 status = ssnprintf (buffer + offset, buffer_len - offset,
137 "%s-%s", vl->type, vl->type_instance);
139 status = ssnprintf (buffer + offset, buffer_len - offset,
141 if ((status < 1) || (status >= buffer_len - offset))
145 strncpy (buffer + offset, ".rrd", buffer_len - offset);
146 buffer[buffer_len - 1] = 0;
149 } /* int value_list_to_filename */
151 static int rc_config (const char *key, const char *value)
153 if (strcasecmp ("DataDir", key) == 0)
157 datadir = strdup (value);
160 int len = strlen (datadir);
161 while ((len > 0) && (datadir[len - 1] == '/'))
173 else if (strcasecmp ("DaemonAddress", key) == 0)
175 sfree (daemon_address);
176 daemon_address = strdup (value);
177 if (daemon_address == NULL)
179 ERROR ("rrdcached plugin: strdup failed.");
183 else if (strcasecmp ("CreateFiles", key) == 0)
185 if ((strcasecmp ("false", value) == 0)
186 || (strcasecmp ("no", value) == 0)
187 || (strcasecmp ("off", value) == 0))
188 config_create_files = 0;
190 config_create_files = 1;
192 else if (strcasecmp ("CollectStatistics", key) == 0)
194 if ((strcasecmp ("false", value) == 0)
195 || (strcasecmp ("no", value) == 0)
196 || (strcasecmp ("off", value) == 0))
197 config_collect_stats = 0;
199 config_collect_stats = 1;
206 } /* int rc_config */
208 static int rc_read (void)
215 value_list_t vl = VALUE_LIST_INIT;
217 if (daemon_address == NULL)
220 if (config_collect_stats == 0)
226 if ((strncmp ("unix:", daemon_address, strlen ("unix:")) == 0)
227 || (daemon_address[0] == '/'))
228 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
230 sstrncpy (vl.host, daemon_address, sizeof (vl.host));
231 sstrncpy (vl.plugin, "rrdcached", sizeof (vl.plugin));
234 status = rrdc_stats_get (&head);
237 ERROR ("rrdcached plugin: rrdc_stats_get failed with status %i.", status);
241 for (ptr = head; ptr != NULL; ptr = ptr->next)
243 if (ptr->type == RRDC_STATS_TYPE_GAUGE)
244 values[0].gauge = (gauge_t) ptr->value.gauge;
245 else if (ptr->type == RRDC_STATS_TYPE_COUNTER)
246 values[0].counter = (counter_t) ptr->value.counter;
250 if (strcasecmp ("QueueLength", ptr->name) == 0)
252 sstrncpy (vl.type, "queue_length", sizeof (vl.type));
253 sstrncpy (vl.type_instance, "", sizeof (vl.type_instance));
255 else if (strcasecmp ("UpdatesWritten", ptr->name) == 0)
257 sstrncpy (vl.type, "operations", sizeof (vl.type));
258 sstrncpy (vl.type_instance, "write-updates", sizeof (vl.type_instance));
260 else if (strcasecmp ("DataSetsWritten", ptr->name) == 0)
262 sstrncpy (vl.type, "operations", sizeof (vl.type));
263 sstrncpy (vl.type_instance, "write-data_sets",
264 sizeof (vl.type_instance));
266 else if (strcasecmp ("TreeNodesNumber", ptr->name) == 0)
268 sstrncpy (vl.type, "gauge", sizeof (vl.type));
269 sstrncpy (vl.type_instance, "tree_nodes", sizeof (vl.type_instance));
271 else if (strcasecmp ("TreeDepth", ptr->name) == 0)
273 sstrncpy (vl.type, "gauge", sizeof (vl.type));
274 sstrncpy (vl.type_instance, "tree_depth", sizeof (vl.type_instance));
276 else if (strcasecmp ("FlushesReceived", ptr->name) == 0)
278 sstrncpy (vl.type, "operations", sizeof (vl.type));
279 sstrncpy (vl.type_instance, "receive-flush", sizeof (vl.type_instance));
281 else if (strcasecmp ("JournalBytes", ptr->name) == 0)
283 sstrncpy (vl.type, "counter", sizeof (vl.type));
284 sstrncpy (vl.type_instance, "journal-bytes", sizeof (vl.type_instance));
286 else if (strcasecmp ("JournalRotate", ptr->name) == 0)
288 sstrncpy (vl.type, "counter", sizeof (vl.type));
289 sstrncpy (vl.type_instance, "journal-rotates", sizeof (vl.type_instance));
291 else if (strcasecmp ("UpdatesReceived", ptr->name) == 0)
293 sstrncpy (vl.type, "operations", sizeof (vl.type));
294 sstrncpy (vl.type_instance, "receive-update", sizeof (vl.type_instance));
298 DEBUG ("rrdcached plugin: rc_read: Unknown statistic `%s'.", ptr->name);
302 plugin_dispatch_values (&vl);
303 } /* for (ptr = head; ptr != NULL; ptr = ptr->next) */
305 rrdc_stats_free (head);
310 static int rc_init (void)
312 if (config_collect_stats != 0)
313 plugin_register_read ("rrdcached", rc_read);
318 static int rc_write (const data_set_t *ds, const value_list_t *vl,
319 user_data_t __attribute__((unused)) *user_data)
323 char *values_array[2];
326 if (daemon_address == NULL)
328 ERROR ("rrdcached plugin: daemon_address == NULL.");
329 plugin_unregister_write ("rrdcached");
333 if (strcmp (ds->type, vl->type) != 0)
335 ERROR ("rrdcached plugin: DS type does not match value list type");
339 if (value_list_to_filename (filename, sizeof (filename), ds, vl) != 0)
341 ERROR ("rrdcached plugin: value_list_to_filename failed.");
345 if (value_list_to_string (values, sizeof (values), ds, vl) != 0)
347 ERROR ("rrdcached plugin: value_list_to_string failed.");
351 values_array[0] = values;
352 values_array[1] = NULL;
354 if (config_create_files != 0)
358 status = stat (filename, &statbuf);
364 ERROR ("rrdcached plugin: stat (%s) failed: %s",
365 filename, sstrerror (errno, errbuf, sizeof (errbuf)));
369 status = cu_rrd_create_file (filename, ds, vl, &rrdcreate_config);
372 ERROR ("rrdcached plugin: cu_rrd_create_file (%s) failed.",
379 status = rrdc_connect (daemon_address);
382 ERROR ("rrdcached plugin: rrdc_connect (%s) failed with status %i.",
383 daemon_address, status);
387 status = rrdc_update (filename, /* values_num = */ 1, (void *) values_array);
390 ERROR ("rrdcached plugin: rrdc_update (%s, [%s], 1) failed with "
392 filename, values_array[0], status);
399 static int rc_shutdown (void)
403 } /* int rc_shutdown */
405 void module_register (void)
407 plugin_register_config ("rrdcached", rc_config,
408 config_keys, config_keys_num);
409 plugin_register_init ("rrdcached", rc_init);
410 plugin_register_write ("rrdcached", rc_write, /* user_data = */ NULL);
411 plugin_register_shutdown ("rrdcached", rc_shutdown);
412 } /* void module_register */
415 * vim: set sw=2 sts=2 et :