1 /**
2 * collectd - src/varnish.c
3 * Copyright (C) 2010 Jérôme Renard
4 * Copyright (C) 2010 Marc Fournier
5 * Copyright (C) 2010-2012 Florian Forster
6 *
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; only version 2 of the License is applicable.
10 *
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 *
20 * Authors:
21 * Jérôme Renard <jerome.renard at gmail.com>
22 * Marc Fournier <marc.fournier at camptocamp.com>
23 * Florian octo Forster <octo at collectd.org>
24 **/
26 /**
27 * Current list of what is monitored and what is not monitored (yet)
28 * {{{
29 * Field name Description Monitored
30 * ---------- ----------- ---------
31 * uptime Child uptime N
32 * client_conn Client connections accepted Y
33 * client_drop Connection dropped, no sess Y
34 * client_req Client requests received Y
35 * cache_hit Cache hits Y
36 * cache_hitpass Cache hits for pass Y
37 * cache_miss Cache misses Y
38 * backend_conn Backend conn. success Y
39 * backend_unhealthy Backend conn. not attempted Y
40 * backend_busy Backend conn. too many Y
41 * backend_fail Backend conn. failures Y
42 * backend_reuse Backend conn. reuses Y
43 * backend_toolate Backend conn. was closed Y
44 * backend_recycle Backend conn. recycles Y
45 * backend_unused Backend conn. unused Y
46 * fetch_head Fetch head Y
47 * fetch_length Fetch with Length Y
48 * fetch_chunked Fetch chunked Y
49 * fetch_eof Fetch EOF Y
50 * fetch_bad Fetch had bad headers Y
51 * fetch_close Fetch wanted close Y
52 * fetch_oldhttp Fetch pre HTTP/1.1 closed Y
53 * fetch_zero Fetch zero len Y
54 * fetch_failed Fetch failed Y
55 * n_sess_mem N struct sess_mem N
56 * n_sess N struct sess N
57 * n_object N struct object N
58 * n_vampireobject N unresurrected objects N
59 * n_objectcore N struct objectcore N
60 * n_objecthead N struct objecthead N
61 * n_smf N struct smf N
62 * n_smf_frag N small free smf N
63 * n_smf_large N large free smf N
64 * n_vbe_conn N struct vbe_conn N
65 * n_wrk N worker threads Y
66 * n_wrk_create N worker threads created Y
67 * n_wrk_failed N worker threads not created Y
68 * n_wrk_max N worker threads limited Y
69 * n_wrk_queue N queued work requests Y
70 * n_wrk_overflow N overflowed work requests Y
71 * n_wrk_drop N dropped work requests Y
72 * n_backend N backends N
73 * n_expired N expired objects N
74 * n_lru_nuked N LRU nuked objects N
75 * n_lru_saved N LRU saved objects N
76 * n_lru_moved N LRU moved objects N
77 * n_deathrow N objects on deathrow N
78 * losthdr HTTP header overflows N
79 * n_objsendfile Objects sent with sendfile N
80 * n_objwrite Objects sent with write N
81 * n_objoverflow Objects overflowing workspace N
82 * s_sess Total Sessions Y
83 * s_req Total Requests Y
84 * s_pipe Total pipe Y
85 * s_pass Total pass Y
86 * s_fetch Total fetch Y
87 * s_hdrbytes Total header bytes Y
88 * s_bodybytes Total body bytes Y
89 * sess_closed Session Closed N
90 * sess_pipeline Session Pipeline N
91 * sess_readahead Session Read Ahead N
92 * sess_linger Session Linger N
93 * sess_herd Session herd N
94 * shm_records SHM records Y
95 * shm_writes SHM writes Y
96 * shm_flushes SHM flushes due to overflow Y
97 * shm_cont SHM MTX contention Y
98 * shm_cycles SHM cycles through buffer Y
99 * sm_nreq allocator requests Y
100 * sm_nobj outstanding allocations Y
101 * sm_balloc bytes allocated Y
102 * sm_bfree bytes free Y
103 * sma_nreq SMA allocator requests Y
104 * sma_nobj SMA outstanding allocations Y
105 * sma_nbytes SMA outstanding bytes Y
106 * sma_balloc SMA bytes allocated Y
107 * sma_bfree SMA bytes free Y
108 * sms_nreq SMS allocator requests Y
109 * sms_nobj SMS outstanding allocations Y
110 * sms_nbytes SMS outstanding bytes Y
111 * sms_balloc SMS bytes allocated Y
112 * sms_bfree SMS bytes freed Y
113 * backend_req Backend requests made N
114 * n_vcl N vcl total N
115 * n_vcl_avail N vcl available N
116 * n_vcl_discard N vcl discarded N
117 * n_purge N total active purges N
118 * n_purge_add N new purges added N
119 * n_purge_retire N old purges deleted N
120 * n_purge_obj_test N objects tested N
121 * n_purge_re_test N regexps tested against N
122 * n_purge_dups N duplicate purges removed N
123 * hcb_nolock HCB Lookups without lock Y
124 * hcb_lock HCB Lookups with lock Y
125 * hcb_insert HCB Inserts Y
126 * esi_parse Objects ESI parsed (unlock) Y
127 * esi_errors ESI parse errors (unlock) Y
128 * }}}
129 */
130 #include "collectd.h"
131 #include "common.h"
132 #include "plugin.h"
133 #include "configfile.h"
135 #include <varnish/varnishapi.h>
137 #if HAVE_VARNISH_V3
138 # include <varnish/vsc.h>
139 typedef struct VSC_C_main c_varnish_stats_t;
140 #endif
142 #if HAVE_VARNISH_V2
143 typedef struct varnish_stats c_varnish_stats_t;
144 #endif
146 /* {{{ user_config_s */
147 struct user_config_s {
148 char *instance;
150 _Bool collect_cache;
151 _Bool collect_connections;
152 _Bool collect_esi;
153 _Bool collect_backend;
154 _Bool collect_fetch;
155 _Bool collect_hcb;
156 _Bool collect_shm;
157 _Bool collect_sms;
158 #if HAVE_VARNISH_V2
159 _Bool collect_sm;
160 _Bool collect_sma;
161 #endif
162 _Bool collect_totals;
163 _Bool collect_workers;
164 };
165 typedef struct user_config_s user_config_t; /* }}} */
167 static _Bool have_instance = 0;
169 static int varnish_submit (const char *plugin_instance, /* {{{ */
170 const char *category, const char *type, const char *type_instance, value_t value)
171 {
172 value_list_t vl = VALUE_LIST_INIT;
174 vl.values = &value;
175 vl.values_len = 1;
177 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
179 sstrncpy (vl.plugin, "varnish", sizeof (vl.plugin));
181 if (plugin_instance == NULL)
182 plugin_instance = "default";
184 ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
185 "%s-%s", plugin_instance, category);
187 sstrncpy (vl.type, type, sizeof (vl.type));
189 if (type_instance != NULL)
190 sstrncpy (vl.type_instance, type_instance,
191 sizeof (vl.type_instance));
193 return (plugin_dispatch_values (&vl));
194 } /* }}} int varnish_submit */
196 static int varnish_submit_gauge (const char *plugin_instance, /* {{{ */
197 const char *category, const char *type, const char *type_instance,
198 uint64_t gauge_value)
199 {
200 value_t value;
202 value.gauge = (gauge_t) gauge_value;
204 return (varnish_submit (plugin_instance, category, type, type_instance, value));
205 } /* }}} int varnish_submit_gauge */
207 static int varnish_submit_derive (const char *plugin_instance, /* {{{ */
208 const char *category, const char *type, const char *type_instance,
209 uint64_t derive_value)
210 {
211 value_t value;
213 value.derive = (derive_t) derive_value;
215 return (varnish_submit (plugin_instance, category, type, type_instance, value));
216 } /* }}} int varnish_submit_derive */
218 static void varnish_monitor (const user_config_t *conf, /* {{{ */
219 const c_varnish_stats_t *stats)
220 {
221 if (conf->collect_cache)
222 {
223 /* Cache hits */
224 varnish_submit_derive (conf->instance, "cache", "cache_result", "hit", stats->cache_hit);
225 /* Cache misses */
226 varnish_submit_derive (conf->instance, "cache", "cache_result", "miss", stats->cache_miss);
227 /* Cache hits for pass */
228 varnish_submit_derive (conf->instance, "cache", "cache_result", "hitpass", stats->cache_hitpass);
229 }
231 if (conf->collect_connections)
232 {
233 /* Client connections accepted */
234 varnish_submit_derive (conf->instance, "connections", "connections", "accepted", stats->client_conn);
235 /* Connection dropped, no sess */
236 varnish_submit_derive (conf->instance, "connections", "connections", "dropped" , stats->client_drop);
237 /* Client requests received */
238 varnish_submit_derive (conf->instance, "connections", "connections", "received", stats->client_req);
239 }
241 if (conf->collect_esi)
242 {
243 /* ESI parse errors (unlock) */
244 varnish_submit_derive (conf->instance, "esi", "total_operations", "error", stats->esi_errors);
245 #if HAVE_VARNISH_V2
246 /* Objects ESI parsed (unlock) */
247 varnish_submit_derive (conf->instance, "esi", "total_operations", "parsed", stats->esi_parse);
248 #endif
249 }
251 if (conf->collect_backend)
252 {
253 /* Backend conn. success */
254 varnish_submit_derive (conf->instance, "backend", "connections", "success" , stats->backend_conn);
255 /* Backend conn. not attempted */
256 varnish_submit_derive (conf->instance, "backend", "connections", "not-attempted", stats->backend_unhealthy);
257 /* Backend conn. too many */
258 varnish_submit_derive (conf->instance, "backend", "connections", "too-many" , stats->backend_busy);
259 /* Backend conn. failures */
260 varnish_submit_derive (conf->instance, "backend", "connections", "failures" , stats->backend_fail);
261 /* Backend conn. reuses */
262 varnish_submit_derive (conf->instance, "backend", "connections", "reuses" , stats->backend_reuse);
263 /* Backend conn. was closed */
264 varnish_submit_derive (conf->instance, "backend", "connections", "was-closed" , stats->backend_toolate);
265 /* Backend conn. recycles */
266 varnish_submit_derive (conf->instance, "backend", "connections", "recycled" , stats->backend_recycle);
267 #if HAVE_VARNISH_V2
268 /* Backend conn. unused */
269 varnish_submit_derive (conf->instance, "backend", "connections", "unused" , stats->backend_unused);
270 #endif
271 }
273 if (conf->collect_fetch)
274 {
275 /* Fetch head */
276 varnish_submit_derive (conf->instance, "fetch", "http_requests", "head" , stats->fetch_head);
277 /* Fetch with length */
278 varnish_submit_derive (conf->instance, "fetch", "http_requests", "length" , stats->fetch_length);
279 /* Fetch chunked */
280 varnish_submit_derive (conf->instance, "fetch", "http_requests", "chunked" , stats->fetch_chunked);
281 /* Fetch EOF */
282 varnish_submit_derive (conf->instance, "fetch", "http_requests", "eof" , stats->fetch_eof);
283 /* Fetch bad headers */
284 varnish_submit_derive (conf->instance, "fetch", "http_requests", "bad_headers", stats->fetch_bad);
285 /* Fetch wanted close */
286 varnish_submit_derive (conf->instance, "fetch", "http_requests", "close" , stats->fetch_close);
287 /* Fetch pre HTTP/1.1 closed */
288 varnish_submit_derive (conf->instance, "fetch", "http_requests", "oldhttp" , stats->fetch_oldhttp);
289 /* Fetch zero len */
290 varnish_submit_derive (conf->instance, "fetch", "http_requests", "zero" , stats->fetch_zero);
291 /* Fetch failed */
292 varnish_submit_derive (conf->instance, "fetch", "http_requests", "failed" , stats->fetch_failed);
293 }
295 if (conf->collect_hcb)
296 {
297 /* HCB Lookups without lock */
298 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "lookup_nolock", stats->hcb_nolock);
299 /* HCB Lookups with lock */
300 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "lookup_lock", stats->hcb_lock);
301 /* HCB Inserts */
302 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "insert", stats->hcb_insert);
303 }
305 if (conf->collect_shm)
306 {
307 /* SHM records */
308 varnish_submit_derive (conf->instance, "shm", "total_operations", "records" , stats->shm_records);
309 /* SHM writes */
310 varnish_submit_derive (conf->instance, "shm", "total_operations", "writes" , stats->shm_writes);
311 /* SHM flushes due to overflow */
312 varnish_submit_derive (conf->instance, "shm", "total_operations", "flushes" , stats->shm_flushes);
313 /* SHM MTX contention */
314 varnish_submit_derive (conf->instance, "shm", "total_operations", "contention", stats->shm_cont);
315 /* SHM cycles through buffer */
316 varnish_submit_derive (conf->instance, "shm", "total_operations", "cycles" , stats->shm_cycles);
317 }
319 #if HAVE_VARNISH_V2
320 if (conf->collect_sm)
321 {
322 /* allocator requests */
323 varnish_submit_derive (conf->instance, "sm", "total_requests", "nreq", stats->sm_nreq);
324 /* outstanding allocations */
325 varnish_submit_gauge (conf->instance, "sm", "requests", "outstanding", stats->sm_nobj);
326 /* bytes allocated */
327 varnish_submit_derive (conf->instance, "sm", "total_bytes", "allocated", stats->sm_balloc);
328 /* bytes free */
329 varnish_submit_derive (conf->instance, "sm", "total_bytes", "free", stats->sm_bfree);
330 }
332 if (conf->collect_sma)
333 {
334 /* SMA allocator requests */
335 varnish_submit_derive (conf->instance, "sma", "total_requests", "nreq", stats->sma_nreq);
336 /* SMA outstanding allocations */
337 varnish_submit_gauge (conf->instance, "sma", "requests", "outstanding", stats->sma_nobj);
338 /* SMA outstanding bytes */
339 varnish_submit_gauge (conf->instance, "sma", "bytes", "outstanding", stats->sma_nbytes);
340 /* SMA bytes allocated */
341 varnish_submit_derive (conf->instance, "sma", "total_bytes", "allocated", stats->sma_balloc);
342 /* SMA bytes free */
343 varnish_submit_derive (conf->instance, "sma", "total_bytes", "free" , stats->sma_bfree);
344 }
345 #endif
347 if (conf->collect_sms)
348 {
349 /* SMS allocator requests */
350 varnish_submit_derive (conf->instance, "sms", "total_requests", "allocator", stats->sms_nreq);
351 /* SMS outstanding allocations */
352 varnish_submit_gauge (conf->instance, "sms", "requests", "outstanding", stats->sms_nobj);
353 /* SMS outstanding bytes */
354 varnish_submit_gauge (conf->instance, "sms", "bytes", "outstanding", stats->sms_nbytes);
355 /* SMS bytes allocated */
356 varnish_submit_derive (conf->instance, "sms", "total_bytes", "allocated", stats->sms_balloc);
357 /* SMS bytes freed */
358 varnish_submit_derive (conf->instance, "sms", "total_bytes", "free", stats->sms_bfree);
359 }
361 if (conf->collect_totals)
362 {
363 /* Total Sessions */
364 varnish_submit_derive (conf->instance, "totals", "total_sessions", "sessions", stats->s_sess);
365 /* Total Requests */
366 varnish_submit_derive (conf->instance, "totals", "total_requests", "requests", stats->s_req);
367 /* Total pipe */
368 varnish_submit_derive (conf->instance, "totals", "total_operations", "pipe", stats->s_pipe);
369 /* Total pass */
370 varnish_submit_derive (conf->instance, "totals", "total_operations", "pass", stats->s_pass);
371 /* Total fetch */
372 varnish_submit_derive (conf->instance, "totals", "total_operations", "fetches", stats->s_fetch);
373 /* Total header bytes */
374 varnish_submit_derive (conf->instance, "totals", "total_bytes", "header-bytes", stats->s_hdrbytes);
375 /* Total body byte */
376 varnish_submit_derive (conf->instance, "totals", "total_bytes", "body-bytes", stats->s_bodybytes);
377 }
379 if (conf->collect_workers)
380 {
381 /* worker threads */
382 varnish_submit_gauge (conf->instance, "workers", "threads", "worker", stats->n_wrk);
383 /* worker threads created */
384 varnish_submit_derive (conf->instance, "workers", "total_threads", "created", stats->n_wrk_create);
385 /* worker threads not created */
386 varnish_submit_derive (conf->instance, "workers", "total_threads", "failed", stats->n_wrk_failed);
387 /* worker threads limited */
388 varnish_submit_derive (conf->instance, "workers", "total_threads", "limited", stats->n_wrk_max);
389 /* dropped work requests */
390 varnish_submit_derive (conf->instance, "workers", "total_requests", "dropped", stats->n_wrk_drop);
391 #ifdef HAVE_VARNISH_V2
392 /* queued work requests */
393 varnish_submit_derive (conf->instance, "workers", "total_requests", "queued", stats->n_wrk_queue);
394 /* overflowed work requests */
395 varnish_submit_derive (conf->instance, "workers", "total_requests", "overflowed", stats->n_wrk_overflow);
396 #endif
397 }
398 } /* }}} void varnish_monitor */
400 #if HAVE_VARNISH_V3
401 static int varnish_read (user_data_t *ud) /* {{{ */
402 {
403 struct VSM_data *vd;
404 const c_varnish_stats_t *stats;
406 user_config_t *conf;
408 if ((ud == NULL) || (ud->data == NULL))
409 return (EINVAL);
411 conf = ud->data;
413 vd = VSM_New();
414 VSC_Setup(vd);
416 if (conf->instance != NULL)
417 {
418 int status;
420 status = VSM_n_Arg (vd, conf->instance);
421 if (status < 0)
422 {
423 ERROR ("varnish plugin: VSM_n_Arg (\"%s\") failed "
424 "with status %i.",
425 conf->instance, status);
426 return (-1);
427 }
428 }
430 if (VSC_Open (vd, /* diag = */ 1))
431 {
432 ERROR ("varnish plugin: Unable to load statistics.");
434 return (-1);
435 }
437 stats = VSC_Main(vd);
439 varnish_monitor (conf, stats);
440 VSM_Close (vd);
442 return (0);
443 } /* }}} */
444 #else /* if HAVE_VARNISH_V2 */
445 static int varnish_read (user_data_t *ud) /* {{{ */
446 {
447 const c_varnish_stats_t *stats;
449 user_config_t *conf;
451 if ((ud == NULL) || (ud->data == NULL))
452 return (EINVAL);
454 conf = ud->data;
456 stats = VSL_OpenStats (conf->instance);
457 if (stats == NULL)
458 {
459 ERROR ("Varnish plugin : unable to load statistics");
461 return (-1);
462 }
464 varnish_monitor (conf, stats);
466 return (0);
467 } /* }}} */
468 #endif
470 static void varnish_config_free (void *ptr) /* {{{ */
471 {
472 user_config_t *conf = ptr;
474 if (conf == NULL)
475 return;
477 sfree (conf->instance);
478 sfree (conf);
479 } /* }}} */
481 static int varnish_config_apply_default (user_config_t *conf) /* {{{ */
482 {
483 if (conf == NULL)
484 return (EINVAL);
486 conf->collect_backend = 1;
487 conf->collect_cache = 1;
488 conf->collect_connections = 1;
489 conf->collect_esi = 0;
490 conf->collect_fetch = 0;
491 conf->collect_hcb = 0;
492 conf->collect_shm = 1;
493 #if HAVE_VARNISH_V2
494 conf->collect_sm = 0;
495 conf->collect_sma = 0;
496 #endif
497 conf->collect_sms = 0;
498 conf->collect_totals = 0;
500 return (0);
501 } /* }}} int varnish_config_apply_default */
503 static int varnish_init (void) /* {{{ */
504 {
505 user_config_t *conf;
506 user_data_t ud;
508 if (have_instance)
509 return (0);
511 conf = malloc (sizeof (*conf));
512 if (conf == NULL)
513 return (ENOMEM);
514 memset (conf, 0, sizeof (*conf));
516 /* Default settings: */
517 conf->instance = NULL;
519 varnish_config_apply_default (conf);
521 ud.data = conf;
522 ud.free_func = varnish_config_free;
524 plugin_register_complex_read (/* group = */ "varnish",
525 /* name = */ "varnish/localhost",
526 /* callback = */ varnish_read,
527 /* interval = */ NULL,
528 /* user data = */ &ud);
530 return (0);
531 } /* }}} int varnish_init */
533 static int varnish_config_instance (const oconfig_item_t *ci) /* {{{ */
534 {
535 user_config_t *conf;
536 user_data_t ud;
537 char callback_name[DATA_MAX_NAME_LEN];
538 int i;
540 conf = malloc (sizeof (*conf));
541 if (conf == NULL)
542 return (ENOMEM);
543 memset (conf, 0, sizeof (*conf));
544 conf->instance = NULL;
546 varnish_config_apply_default (conf);
548 if (ci->values_num == 1)
549 {
550 int status;
552 status = cf_util_get_string (ci, &conf->instance);
553 if (status != 0)
554 {
555 sfree (conf);
556 return (status);
557 }
558 assert (conf->instance != NULL);
560 if (strcmp ("localhost", conf->instance) == 0)
561 {
562 sfree (conf->instance);
563 conf->instance = NULL;
564 }
565 }
566 else if (ci->values_num > 1)
567 {
568 WARNING ("Varnish plugin: \"Instance\" blocks accept only "
569 "one argument.");
570 return (EINVAL);
571 }
573 for (i = 0; i < ci->children_num; i++)
574 {
575 oconfig_item_t *child = ci->children + i;
577 if (strcasecmp ("CollectCache", child->key) == 0)
578 cf_util_get_boolean (child, &conf->collect_cache);
579 else if (strcasecmp ("CollectConnections", child->key) == 0)
580 cf_util_get_boolean (child, &conf->collect_connections);
581 else if (strcasecmp ("CollectESI", child->key) == 0)
582 cf_util_get_boolean (child, &conf->collect_esi);
583 else if (strcasecmp ("CollectBackend", child->key) == 0)
584 cf_util_get_boolean (child, &conf->collect_backend);
585 else if (strcasecmp ("CollectFetch", child->key) == 0)
586 cf_util_get_boolean (child, &conf->collect_fetch);
587 else if (strcasecmp ("CollectHCB", child->key) == 0)
588 cf_util_get_boolean (child, &conf->collect_hcb);
589 else if (strcasecmp ("CollectSHM", child->key) == 0)
590 cf_util_get_boolean (child, &conf->collect_shm);
591 else if (strcasecmp ("CollectSMS", child->key) == 0)
592 cf_util_get_boolean (child, &conf->collect_sms);
593 #if HAVE_VARNISH_V2
594 else if (strcasecmp ("CollectSMA", child->key) == 0)
595 cf_util_get_boolean (child, &conf->collect_sma);
596 else if (strcasecmp ("CollectSM", child->key) == 0)
597 cf_util_get_boolean (child, &conf->collect_sm);
598 #endif
599 else if (strcasecmp ("CollectTotals", child->key) == 0)
600 cf_util_get_boolean (child, &conf->collect_totals);
601 else if (strcasecmp ("CollectWorkers", child->key) == 0)
602 cf_util_get_boolean (child, &conf->collect_workers);
603 else
604 {
605 WARNING ("Varnish plugin: Ignoring unknown "
606 "configuration option: \"%s\"",
607 child->key);
608 }
609 }
611 if (!conf->collect_cache
612 && !conf->collect_connections
613 && !conf->collect_esi
614 && !conf->collect_backend
615 && !conf->collect_fetch
616 && !conf->collect_hcb
617 && !conf->collect_shm
618 && !conf->collect_sms
619 #if HAVE_VARNISH_V2
620 && !conf->collect_sma
621 && !conf->collect_sm
622 #endif
623 && !conf->collect_totals
624 && !conf->collect_workers)
625 {
626 WARNING ("Varnish plugin: No metric has been configured for "
627 "instance \"%s\". Disabling this instance.",
628 (conf->instance == NULL) ? "localhost" : conf->instance);
629 return (EINVAL);
630 }
632 ssnprintf (callback_name, sizeof (callback_name), "varnish/%s",
633 (conf->instance == NULL) ? "localhost" : conf->instance);
635 ud.data = conf;
636 ud.free_func = varnish_config_free;
638 plugin_register_complex_read (/* group = */ "varnish",
639 /* name = */ callback_name,
640 /* callback = */ varnish_read,
641 /* interval = */ NULL,
642 /* user data = */ &ud);
644 have_instance = 1;
646 return (0);
647 } /* }}} int varnish_config_instance */
649 static int varnish_config (oconfig_item_t *ci) /* {{{ */
650 {
651 int i;
653 for (i = 0; i < ci->children_num; i++)
654 {
655 oconfig_item_t *child = ci->children + i;
657 if (strcasecmp ("Instance", child->key) == 0)
658 varnish_config_instance (child);
659 else
660 {
661 WARNING ("Varnish plugin: Ignoring unknown "
662 "configuration option: \"%s\"",
663 child->key);
664 }
665 }
667 return (0);
668 } /* }}} int varnish_config */
670 void module_register (void) /* {{{ */
671 {
672 plugin_register_complex_config ("varnish", varnish_config);
673 plugin_register_init ("varnish", varnish_init);
674 } /* }}} */
676 /* vim: set sw=8 noet fdm=marker : */