1 /**
2 * collectd - src/statsd.c
3 *
4 * Copyright (C) 2013 Florian octo Forster
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15 * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 *
18 * Authors:
19 * Florian octo Forster <octo at collectd.org>
20 */
22 #include "collectd.h"
23 #include "plugin.h"
24 #include "common.h"
25 #include "configfile.h"
26 #include "utils_avltree.h"
27 #include "utils_complain.h"
28 #include "utils_latency.h"
30 #include <pthread.h>
32 #include <sys/types.h>
33 #include <sys/socket.h>
34 #include <netdb.h>
35 #include <poll.h>
37 #ifndef STATSD_DEFAULT_NODE
38 # define STATSD_DEFAULT_NODE NULL
39 #endif
41 #ifndef STATSD_DEFAULT_SERVICE
42 # define STATSD_DEFAULT_SERVICE "8125"
43 #endif
45 enum metric_type_e
46 {
47 STATSD_COUNTER,
48 STATSD_TIMER,
49 STATSD_GAUGE,
50 STATSD_SET
51 };
52 typedef enum metric_type_e metric_type_t;
54 struct statsd_metric_s
55 {
56 metric_type_t type;
57 int64_t value;
58 latency_counter_t *latency;
59 c_avl_tree_t *set;
60 unsigned long updates_num;
61 };
62 typedef struct statsd_metric_s statsd_metric_t;
64 static c_avl_tree_t *metrics_tree = NULL;
65 static pthread_mutex_t metrics_lock = PTHREAD_MUTEX_INITIALIZER;
67 static pthread_t network_thread;
68 static _Bool network_thread_running = 0;
69 static _Bool network_thread_shutdown = 0;
71 static char *conf_node = NULL;
72 static char *conf_service = NULL;
74 static _Bool conf_delete_counters = 0;
75 static _Bool conf_delete_timers = 0;
76 static _Bool conf_delete_gauges = 0;
77 static _Bool conf_delete_sets = 0;
79 static double *conf_timer_percentile = NULL;
80 static size_t conf_timer_percentile_num = 0;
82 /* Must hold metrics_lock when calling this function. */
83 static statsd_metric_t *statsd_metric_lookup_unsafe (char const *name, /* {{{ */
84 metric_type_t type)
85 {
86 char key[DATA_MAX_NAME_LEN + 2];
87 char *key_copy;
88 statsd_metric_t *metric;
89 int status;
91 switch (type)
92 {
93 case STATSD_COUNTER: key[0] = 'c'; break;
94 case STATSD_TIMER: key[0] = 't'; break;
95 case STATSD_GAUGE: key[0] = 'g'; break;
96 case STATSD_SET: key[0] = 's'; break;
97 default: return (NULL);
98 }
100 key[1] = ':';
101 sstrncpy (&key[2], name, sizeof (key) - 2);
103 status = c_avl_get (metrics_tree, key, (void *) &metric);
104 if (status == 0)
105 return (metric);
107 key_copy = strdup (key);
108 if (key_copy == NULL)
109 {
110 ERROR ("statsd plugin: strdup failed.");
111 return (NULL);
112 }
114 metric = malloc (sizeof (*metric));
115 if (metric == NULL)
116 {
117 ERROR ("statsd plugin: malloc failed.");
118 sfree (key_copy);
119 return (NULL);
120 }
121 memset (metric, 0, sizeof (*metric));
123 metric->type = type;
124 metric->latency = NULL;
125 metric->set = NULL;
127 status = c_avl_insert (metrics_tree, key_copy, metric);
128 if (status != 0)
129 {
130 ERROR ("statsd plugin: c_avl_insert failed.");
131 sfree (key_copy);
132 sfree (metric);
133 return (NULL);
134 }
136 return (metric);
137 } /* }}} statsd_metric_lookup_unsafe */
139 static int statsd_metric_set (char const *name, int64_t value, /* {{{ */
140 metric_type_t type)
141 {
142 statsd_metric_t *metric;
144 pthread_mutex_lock (&metrics_lock);
146 metric = statsd_metric_lookup_unsafe (name, type);
147 if (metric == NULL)
148 {
149 pthread_mutex_unlock (&metrics_lock);
150 return (-1);
151 }
153 metric->value = value;
154 metric->updates_num++;
156 pthread_mutex_unlock (&metrics_lock);
158 return (0);
159 } /* }}} int statsd_metric_set */
161 static int statsd_metric_add (char const *name, int64_t delta, /* {{{ */
162 metric_type_t type)
163 {
164 statsd_metric_t *metric;
166 pthread_mutex_lock (&metrics_lock);
168 metric = statsd_metric_lookup_unsafe (name, type);
169 if (metric == NULL)
170 {
171 pthread_mutex_unlock (&metrics_lock);
172 return (-1);
173 }
175 metric->value += delta;
176 metric->updates_num++;
178 pthread_mutex_unlock (&metrics_lock);
180 return (0);
181 } /* }}} int statsd_metric_add */
183 static int statsd_parse_value (char const *str, value_t *ret_value) /* {{{ */
184 {
185 char *endptr = NULL;
187 ret_value->derive = (derive_t) strtoll (str, &endptr, /* base = */ 0);
188 if ((str == endptr) || ((endptr != NULL) && (*endptr != 0)))
189 return (-1);
191 return (0);
192 } /* }}} int statsd_parse_value */
194 static int statsd_handle_counter (char const *name, /* {{{ */
195 char const *value_str,
196 char const *extra)
197 {
198 value_t value;
199 value_t scale;
200 int status;
202 if ((extra != NULL) && (extra[0] != '@'))
203 return (-1);
205 scale.gauge = 1.0;
206 if (extra != NULL)
207 {
208 status = parse_value (extra + 1, &scale, DS_TYPE_GAUGE);
209 if (status != 0)
210 return (status);
212 if (!isfinite (scale.gauge) || (scale.gauge <= 0.0) || (scale.gauge > 1.0))
213 return (-1);
214 }
216 value.derive = 1;
217 status = statsd_parse_value (value_str, &value);
218 if (status != 0)
219 return (status);
221 if (value.derive < 1)
222 return (-1);
224 return (statsd_metric_add (name,
225 (int64_t) (((gauge_t) value.derive) / scale.gauge),
226 STATSD_COUNTER));
227 } /* }}} int statsd_handle_counter */
229 static int statsd_handle_gauge (char const *name, /* {{{ */
230 char const *value_str)
231 {
232 value_t value;
233 int status;
235 value.derive = 0;
236 status = statsd_parse_value (value_str, &value);
237 if (status != 0)
238 return (status);
240 if ((value_str[0] == '+') || (value_str[0] == '-'))
241 return (statsd_metric_add (name, (int64_t) value.derive, STATSD_GAUGE));
242 else
243 return (statsd_metric_set (name, (int64_t) value.derive, STATSD_GAUGE));
244 } /* }}} int statsd_handle_gauge */
246 static int statsd_handle_timer (char const *name, /* {{{ */
247 char const *value_str)
248 {
249 statsd_metric_t *metric;
250 value_t value_ms;
251 cdtime_t value;
252 int status;
254 value_ms.derive = 0;
255 status = statsd_parse_value (value_str, &value_ms);
256 if (status != 0)
257 return (status);
259 value = MS_TO_CDTIME_T (value_ms.derive);
261 pthread_mutex_lock (&metrics_lock);
263 metric = statsd_metric_lookup_unsafe (name, STATSD_TIMER);
264 if (metric == NULL)
265 {
266 pthread_mutex_unlock (&metrics_lock);
267 return (-1);
268 }
270 if (metric->latency == NULL)
271 metric->latency = latency_counter_create ();
272 if (metric->latency == NULL)
273 {
274 pthread_mutex_unlock (&metrics_lock);
275 return (-1);
276 }
278 latency_counter_add (metric->latency, value);
279 metric->updates_num++;
281 pthread_mutex_unlock (&metrics_lock);
282 return (0);
283 } /* }}} int statsd_handle_timer */
285 static int statsd_handle_set (char const *name, /* {{{ */
286 char const *set_key_orig)
287 {
288 statsd_metric_t *metric = NULL;
289 char *set_key;
290 int status;
292 pthread_mutex_lock (&metrics_lock);
294 metric = statsd_metric_lookup_unsafe (name, STATSD_SET);
295 if (metric == NULL)
296 {
297 pthread_mutex_unlock (&metrics_lock);
298 return (-1);
299 }
301 /* Make sure metric->set exists. */
302 if (metric->set == NULL)
303 metric->set = c_avl_create ((void *) strcmp);
305 if (metric->set == NULL)
306 {
307 pthread_mutex_unlock (&metrics_lock);
308 ERROR ("statsd plugin: c_avl_create failed.");
309 return (-1);
310 }
312 set_key = strdup (set_key_orig);
313 if (set_key == NULL)
314 {
315 pthread_mutex_unlock (&metrics_lock);
316 ERROR ("statsd plugin: strdup failed.");
317 return (-1);
318 }
320 status = c_avl_insert (metric->set, set_key, /* value = */ NULL);
321 if (status < 0)
322 {
323 pthread_mutex_unlock (&metrics_lock);
324 if (status < 0)
325 ERROR ("statsd plugin: c_avl_insert (\"%s\") failed with status %i.",
326 set_key, status);
327 sfree (set_key);
328 return (-1);
329 }
330 else if (status > 0) /* key already exists */
331 {
332 sfree (set_key);
333 }
335 metric->updates_num++;
337 pthread_mutex_unlock (&metrics_lock);
338 return (0);
339 } /* }}} int statsd_handle_set */
341 static int statsd_parse_line (char *buffer) /* {{{ */
342 {
343 char *name = buffer;
344 char *value;
345 char *type;
346 char *extra;
348 type = strchr (name, '|');
349 if (type == NULL)
350 return (-1);
351 *type = 0;
352 type++;
354 value = strrchr (name, ':');
355 if (value == NULL)
356 return (-1);
357 *value = 0;
358 value++;
360 extra = strchr (type, '|');
361 if (extra != NULL)
362 {
363 *extra = 0;
364 extra++;
365 }
367 if (strcmp ("c", type) == 0)
368 return (statsd_handle_counter (name, value, extra));
370 /* extra is only valid for counters */
371 if (extra != NULL)
372 return (-1);
374 if (strcmp ("g", type) == 0)
375 return (statsd_handle_gauge (name, value));
376 else if (strcmp ("ms", type) == 0)
377 return (statsd_handle_timer (name, value));
378 else if (strcmp ("s", type) == 0)
379 return (statsd_handle_set (name, value));
380 else
381 return (-1);
382 } /* }}} void statsd_parse_line */
384 static void statsd_parse_buffer (char *buffer) /* {{{ */
385 {
386 char *dummy;
387 char *saveptr = NULL;
388 char *ptr;
390 for (dummy = buffer;
391 (ptr = strtok_r (dummy, "\r\n", &saveptr)) != NULL;
392 dummy = NULL)
393 {
394 char *line_orig = sstrdup (ptr);
395 int status;
397 status = statsd_parse_line (ptr);
398 if (status != 0)
399 ERROR ("statsd plugin: Unable to parse line: \"%s\"", line_orig);
401 sfree (line_orig);
402 }
403 } /* }}} void statsd_parse_buffer */
405 static void statsd_network_read (int fd) /* {{{ */
406 {
407 char buffer[4096];
408 size_t buffer_size;
409 ssize_t status;
411 status = recv (fd, buffer, sizeof (buffer), /* flags = */ MSG_DONTWAIT);
412 if (status < 0)
413 {
414 char errbuf[1024];
416 if ((errno == EAGAIN) || (errno == EWOULDBLOCK))
417 return;
419 ERROR ("statsd plugin: recv(2) failed: %s",
420 sstrerror (errno, errbuf, sizeof (errbuf)));
421 return;
422 }
424 buffer_size = (size_t) status;
425 if (buffer_size >= sizeof (buffer))
426 buffer_size = sizeof (buffer) - 1;
427 buffer[buffer_size] = 0;
429 statsd_parse_buffer (buffer);
430 } /* }}} void statsd_network_read */
432 static int statsd_network_init (struct pollfd **ret_fds, /* {{{ */
433 size_t *ret_fds_num)
434 {
435 struct pollfd *fds = NULL;
436 size_t fds_num = 0;
438 struct addrinfo ai_hints;
439 struct addrinfo *ai_list = NULL;
440 struct addrinfo *ai_ptr;
441 int status;
443 char const *node = (conf_node != NULL) ? conf_node : STATSD_DEFAULT_NODE;
444 char const *service = (conf_service != NULL)
445 ? conf_service : STATSD_DEFAULT_SERVICE;
447 memset (&ai_hints, 0, sizeof (ai_hints));
448 ai_hints.ai_flags = AI_PASSIVE;
449 #ifdef AI_ADDRCONFIG
450 ai_hints.ai_flags |= AI_ADDRCONFIG;
451 #endif
452 ai_hints.ai_family = AF_UNSPEC;
453 ai_hints.ai_socktype = SOCK_DGRAM;
455 status = getaddrinfo (node, service, &ai_hints, &ai_list);
456 if (status != 0)
457 {
458 ERROR ("statsd plugin: getaddrinfo (\"%s\", \"%s\") failed: %s",
459 node, service, gai_strerror (status));
460 return (status);
461 }
463 for (ai_ptr = ai_list; ai_ptr != NULL; ai_ptr = ai_ptr->ai_next)
464 {
465 int fd;
466 struct pollfd *tmp;
468 char dbg_node[NI_MAXHOST];
469 char dbg_service[NI_MAXSERV];
471 fd = socket (ai_ptr->ai_family, ai_ptr->ai_socktype, ai_ptr->ai_protocol);
472 if (fd < 0)
473 {
474 char errbuf[1024];
475 ERROR ("statsd plugin: socket(2) failed: %s",
476 sstrerror (errno, errbuf, sizeof (errbuf)));
477 continue;
478 }
480 getnameinfo (ai_ptr->ai_addr, ai_ptr->ai_addrlen,
481 dbg_node, sizeof (dbg_node), dbg_service, sizeof (dbg_service),
482 NI_DGRAM | NI_NUMERICHOST | NI_NUMERICSERV);
483 DEBUG ("statsd plugin: Trying to bind to [%s]:%s ...", dbg_node, dbg_service);
485 status = bind (fd, ai_ptr->ai_addr, ai_ptr->ai_addrlen);
486 if (status != 0)
487 {
488 char errbuf[1024];
489 ERROR ("statsd plugin: bind(2) failed: %s",
490 sstrerror (errno, errbuf, sizeof (errbuf)));
491 close (fd);
492 continue;
493 }
495 tmp = realloc (fds, sizeof (*fds) * (fds_num + 1));
496 if (tmp == NULL)
497 {
498 ERROR ("statsd plugin: realloc failed.");
499 continue;
500 }
501 fds = tmp;
502 tmp = fds + fds_num;
503 fds_num++;
505 memset (tmp, 0, sizeof (*tmp));
506 tmp->fd = fd;
507 tmp->events = POLLIN | POLLPRI;
508 }
510 freeaddrinfo (ai_list);
512 if (fds_num == 0)
513 {
514 ERROR ("statsd plugin: Unable to create listening socket for [%s]:%s.",
515 (node != NULL) ? node : "::", service);
516 return (ENOENT);
517 }
519 *ret_fds = fds;
520 *ret_fds_num = fds_num;
521 return (0);
522 } /* }}} int statsd_network_init */
524 static void *statsd_network_thread (void *args) /* {{{ */
525 {
526 struct pollfd *fds = NULL;
527 size_t fds_num = 0;
528 int status;
529 size_t i;
531 status = statsd_network_init (&fds, &fds_num);
532 if (status != 0)
533 {
534 ERROR ("statsd plugin: Unable to open listening sockets.");
535 pthread_exit ((void *) 0);
536 }
538 while (!network_thread_shutdown)
539 {
540 status = poll (fds, (nfds_t) fds_num, /* timeout = */ -1);
541 if (status < 0)
542 {
543 char errbuf[1024];
545 if ((errno == EINTR) || (errno == EAGAIN))
546 continue;
548 ERROR ("statsd plugin: poll(2) failed: %s",
549 sstrerror (errno, errbuf, sizeof (errbuf)));
550 break;
551 }
553 for (i = 0; i < fds_num; i++)
554 {
555 if ((fds[i].revents & (POLLIN | POLLPRI)) == 0)
556 continue;
558 statsd_network_read (fds[i].fd);
559 fds[i].revents = 0;
560 }
561 } /* while (!network_thread_shutdown) */
563 /* Clean up */
564 for (i = 0; i < fds_num; i++)
565 close (fds[i].fd);
566 sfree (fds);
568 return ((void *) 0);
569 } /* }}} void *statsd_network_thread */
571 static int statsd_config_timer_percentile (oconfig_item_t *ci) /* {{{ */
572 {
573 double percent = NAN;
574 double *tmp;
575 int status;
577 status = cf_util_get_double (ci, &percent);
578 if (status != 0)
579 return (status);
581 if ((percent <= 0.0) || (percent >= 100))
582 {
583 ERROR ("statsd plugin: The value for \"%s\" must be between 0 and 100, "
584 "exclusively.", ci->key);
585 return (ERANGE);
586 }
588 tmp = realloc (conf_timer_percentile,
589 sizeof (*conf_timer_percentile) * (conf_timer_percentile_num + 1));
590 if (tmp == NULL)
591 {
592 ERROR ("statsd plugin: realloc failed.");
593 return (ENOMEM);
594 }
595 conf_timer_percentile = tmp;
596 conf_timer_percentile[conf_timer_percentile_num] = percent;
597 conf_timer_percentile_num++;
599 return (0);
600 } /* }}} int statsd_config_timer_percentile */
602 static int statsd_config (oconfig_item_t *ci) /* {{{ */
603 {
604 int i;
606 for (i = 0; i < ci->children_num; i++)
607 {
608 oconfig_item_t *child = ci->children + i;
610 if (strcasecmp ("Host", child->key) == 0)
611 cf_util_get_string (child, &conf_node);
612 else if (strcasecmp ("Port", child->key) == 0)
613 cf_util_get_service (child, &conf_service);
614 else if (strcasecmp ("DeleteCounters", child->key) == 0)
615 cf_util_get_boolean (child, &conf_delete_counters);
616 else if (strcasecmp ("DeleteTimers", child->key) == 0)
617 cf_util_get_boolean (child, &conf_delete_timers);
618 else if (strcasecmp ("DeleteGauges", child->key) == 0)
619 cf_util_get_boolean (child, &conf_delete_gauges);
620 else if (strcasecmp ("DeleteSets", child->key) == 0)
621 cf_util_get_boolean (child, &conf_delete_sets);
622 else if (strcasecmp ("TimerPercentile", child->key) == 0)
623 statsd_config_timer_percentile (child);
624 else
625 ERROR ("statsd plugin: The \"%s\" config option is not valid.",
626 child->key);
627 }
629 return (0);
630 } /* }}} int statsd_config */
632 static int statsd_init (void) /* {{{ */
633 {
634 pthread_mutex_lock (&metrics_lock);
635 if (metrics_tree == NULL)
636 metrics_tree = c_avl_create ((void *) strcasecmp);
638 if (!network_thread_running)
639 {
640 int status;
642 status = pthread_create (&network_thread,
643 /* attr = */ NULL,
644 statsd_network_thread,
645 /* args = */ NULL);
646 if (status != 0)
647 {
648 char errbuf[1024];
649 pthread_mutex_unlock (&metrics_lock);
650 ERROR ("statsd plugin: pthread_create failed: %s",
651 sstrerror (errno, errbuf, sizeof (errbuf)));
652 return (status);
653 }
654 }
655 network_thread_running = 1;
657 pthread_mutex_unlock (&metrics_lock);
659 return (0);
660 } /* }}} int statsd_init */
662 /* Must hold metrics_lock when calling this function. */
663 static int statsd_metric_clear_set_unsafe (statsd_metric_t *metric) /* {{{ */
664 {
665 void *key;
666 void *value;
668 if ((metric == NULL) || (metric->type != STATSD_SET))
669 return (EINVAL);
671 if (metric->set == NULL)
672 return (0);
674 while (c_avl_pick (metric->set, &key, &value) == 0)
675 {
676 sfree (key);
677 sfree (value);
678 }
680 return (0);
681 } /* }}} int statsd_metric_clear_set_unsafe */
683 /* Must hold metrics_lock when calling this function. */
684 static int statsd_metric_submit_unsafe (char const *name, /* {{{ */
685 statsd_metric_t const *metric)
686 {
687 value_t values[1];
688 value_list_t vl = VALUE_LIST_INIT;
690 vl.values = values;
691 vl.values_len = 1;
692 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
693 sstrncpy (vl.plugin, "statsd", sizeof (vl.plugin));
695 if (metric->type == STATSD_GAUGE)
696 sstrncpy (vl.type, "gauge", sizeof (vl.type));
697 else if (metric->type == STATSD_TIMER)
698 sstrncpy (vl.type, "latency", sizeof (vl.type));
699 else if (metric->type == STATSD_SET)
700 sstrncpy (vl.type, "objects", sizeof (vl.type));
701 else /* if (metric->type == STATSD_COUNTER) */
702 sstrncpy (vl.type, "derive", sizeof (vl.type));
704 sstrncpy (vl.type_instance, name, sizeof (vl.type_instance));
706 if (metric->type == STATSD_GAUGE)
707 values[0].gauge = (gauge_t) metric->value;
708 else if (metric->type == STATSD_TIMER)
709 {
710 size_t i;
712 if (metric->updates_num == 0)
713 return (0);
715 vl.time = cdtime ();
717 ssnprintf (vl.type_instance, sizeof (vl.type_instance),
718 "%s-average", name);
719 values[0].gauge = CDTIME_T_TO_DOUBLE (
720 latency_counter_get_average (metric->latency));
721 plugin_dispatch_values (&vl);
723 for (i = 0; i < conf_timer_percentile_num; i++)
724 {
725 ssnprintf (vl.type_instance, sizeof (vl.type_instance),
726 "%s-percentile-%.0f", name, conf_timer_percentile[i]);
727 values[0].gauge = CDTIME_T_TO_DOUBLE (
728 latency_counter_get_percentile (
729 metric->latency, conf_timer_percentile[i]));
730 plugin_dispatch_values (&vl);
731 }
733 latency_counter_reset (metric->latency);
734 return (0);
735 }
736 else if (metric->type == STATSD_SET)
737 {
738 if (metric->set == NULL)
739 values[0].gauge = 0.0;
740 else
741 values[0].gauge = (gauge_t) c_avl_size (metric->set);
742 }
743 else
744 values[0].derive = (derive_t) metric->value;
746 return (plugin_dispatch_values (&vl));
747 } /* }}} int statsd_metric_submit_unsafe */
749 static int statsd_read (void) /* {{{ */
750 {
751 c_avl_iterator_t *iter;
752 char *name;
753 statsd_metric_t *metric;
755 char **to_be_deleted = NULL;
756 size_t to_be_deleted_num = 0;
757 size_t i;
759 pthread_mutex_lock (&metrics_lock);
761 if (metrics_tree == NULL)
762 {
763 pthread_mutex_unlock (&metrics_lock);
764 return (0);
765 }
767 iter = c_avl_get_iterator (metrics_tree);
768 while (c_avl_iterator_next (iter, (void *) &name, (void *) &metric) == 0)
769 {
770 if ((metric->updates_num == 0)
771 && ((conf_delete_counters && (metric->type == STATSD_COUNTER))
772 || (conf_delete_timers && (metric->type == STATSD_TIMER))
773 || (conf_delete_gauges && (metric->type == STATSD_GAUGE))
774 || (conf_delete_sets && (metric->type == STATSD_SET))))
775 {
776 DEBUG ("statsd plugin: Deleting metric \"%s\".", name);
777 strarray_add (&to_be_deleted, &to_be_deleted_num, name);
778 continue;
779 }
781 /* Names have a prefix, e.g. "c:", which determines the (statsd) type.
782 * Remove this here. */
783 statsd_metric_submit_unsafe (name + 2, metric);
785 /* Reset the metric. */
786 metric->updates_num = 0;
787 if (metric->type == STATSD_SET)
788 statsd_metric_clear_set_unsafe (metric);
789 }
790 c_avl_iterator_destroy (iter);
792 for (i = 0; i < to_be_deleted_num; i++)
793 {
794 int status;
796 status = c_avl_remove (metrics_tree, to_be_deleted[i],
797 (void *) &name, (void *) &metric);
798 if (status != 0)
799 {
800 ERROR ("stats plugin: c_avl_remove (\"%s\") failed with status %i.",
801 to_be_deleted[i], status);
802 continue;
803 }
805 sfree (name);
806 sfree (metric);
807 }
809 pthread_mutex_unlock (&metrics_lock);
811 strarray_free (to_be_deleted, to_be_deleted_num);
813 return (0);
814 } /* }}} int statsd_read */
816 static int statsd_shutdown (void) /* {{{ */
817 {
818 void *key;
819 void *value;
821 pthread_mutex_lock (&metrics_lock);
823 if (network_thread_running)
824 {
825 network_thread_shutdown = 1;
826 pthread_kill (network_thread, SIGTERM);
827 pthread_join (network_thread, /* retval = */ NULL);
828 }
829 network_thread_running = 0;
831 while (c_avl_pick (metrics_tree, &key, &value) == 0)
832 {
833 sfree (key);
834 sfree (value);
835 }
836 c_avl_destroy (metrics_tree);
837 metrics_tree = NULL;
839 sfree (conf_node);
840 sfree (conf_service);
842 pthread_mutex_unlock (&metrics_lock);
844 return (0);
845 } /* }}} int statsd_shutdown */
847 void module_register (void)
848 {
849 plugin_register_complex_config ("statsd", statsd_config);
850 plugin_register_init ("statsd", statsd_init);
851 plugin_register_read ("statsd", statsd_read);
852 plugin_register_shutdown ("statsd", statsd_shutdown);
853 }
855 /* vim: set sw=2 sts=2 et fdm=marker : */