src/varnish.c

   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  **/
  25
  26 #include "collectd.h"
  27 #include "common.h"
  28 #include "plugin.h"
  29 #include "configfile.h"
  30
  31 #include <varnish/varnishapi.h>
  32
  33 #if HAVE_VARNISH_V3
  34 # include <varnish/vsc.h>
  35 typedef struct VSC_C_main c_varnish_stats_t;
  36 #endif
  37
  38 #if HAVE_VARNISH_V2
  39 typedef struct varnish_stats c_varnish_stats_t;
  40 #endif
  41
  42 /* {{{ user_config_s */
  43 struct user_config_s {
  44         char *instance;
  45
  46         _Bool collect_cache;
  47         _Bool collect_connections;
  48         _Bool collect_esi;
  49         _Bool collect_backend;
  50 #ifdef HAVE_VARNISH_V3
  51         _Bool collect_dirdns;
  52 #endif
  53         _Bool collect_fetch;
  54         _Bool collect_hcb;
  55         _Bool collect_objects;
  56 #if HAVE_VARNISH_V2
  57         _Bool collect_purge;
  58 #else
  59         _Bool collect_ban;
  60 #endif
  61         _Bool collect_session;
  62         _Bool collect_shm;
  63         _Bool collect_sms;
  64 #if HAVE_VARNISH_V2
  65         _Bool collect_sm;
  66         _Bool collect_sma;
  67 #endif
  68         _Bool collect_struct;
  69         _Bool collect_totals;
  70         _Bool collect_uptime;
  71         _Bool collect_vcl;
  72         _Bool collect_workers;
  73 };
  74 typedef struct user_config_s user_config_t; /* }}} */
  75
  76 static _Bool have_instance = 0;
  77
  78 static int varnish_submit (const char *plugin_instance, /* {{{ */
  79                 const char *category, const char *type, const char *type_instance, value_t value)
  80 {
  81         value_list_t vl = VALUE_LIST_INIT;
  82
  83         vl.values = &value;
  84         vl.values_len = 1;
  85
  86         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
  87
  88         sstrncpy (vl.plugin, "varnish", sizeof (vl.plugin));
  89
  90         if (plugin_instance == NULL)
  91                 plugin_instance = "default";
  92
  93         ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
  94                 "%s-%s", plugin_instance, category);
  95
  96         sstrncpy (vl.type, type, sizeof (vl.type));
  97
  98         if (type_instance != NULL)
  99                 sstrncpy (vl.type_instance, type_instance,
 100                                 sizeof (vl.type_instance));
 101
 102         return (plugin_dispatch_values (&vl));
 103 } /* }}} int varnish_submit */
 104
 105 static int varnish_submit_gauge (const char *plugin_instance, /* {{{ */
 106                 const char *category, const char *type, const char *type_instance,
 107                 uint64_t gauge_value)
 108 {
 109         value_t value;
 110
 111         value.gauge = (gauge_t) gauge_value;
 112
 113         return (varnish_submit (plugin_instance, category, type, type_instance, value));
 114 } /* }}} int varnish_submit_gauge */
 115
 116 static int varnish_submit_derive (const char *plugin_instance, /* {{{ */
 117                 const char *category, const char *type, const char *type_instance,
 118                 uint64_t derive_value)
 119 {
 120         value_t value;
 121
 122         value.derive = (derive_t) derive_value;
 123
 124         return (varnish_submit (plugin_instance, category, type, type_instance, value));
 125 } /* }}} int varnish_submit_derive */
 126
 127 static void varnish_monitor (const user_config_t *conf, /* {{{ */
 128                 const c_varnish_stats_t *stats)
 129 {
 130         if (conf->collect_cache)
 131         {
 132                 /* Cache hits */
 133                 varnish_submit_derive (conf->instance, "cache", "cache_result", "hit",     stats->cache_hit);
 134                 /* Cache misses */
 135                 varnish_submit_derive (conf->instance, "cache", "cache_result", "miss",    stats->cache_miss);
 136                 /* Cache hits for pass */
 137                 varnish_submit_derive (conf->instance, "cache", "cache_result", "hitpass", stats->cache_hitpass);
 138         }
 139
 140         if (conf->collect_connections)
 141         {
 142                 /* Client connections accepted */
 143                 varnish_submit_derive (conf->instance, "connections", "connections", "accepted", stats->client_conn);
 144                 /* Connection dropped, no sess */
 145                 varnish_submit_derive (conf->instance, "connections", "connections", "dropped" , stats->client_drop);
 146                 /* Client requests received    */
 147                 varnish_submit_derive (conf->instance, "connections", "connections", "received", stats->client_req);
 148         }
 149
 150 #ifdef HAVE_VARNISH_V3
 151         if (conf->collect_dirdns)
 152         {
 153                 /* DNS director lookups */
 154                 varnish_submit_derive (conf->instance, "dirdns", "cache_operation", "lookups",    stats->dir_dns_lookups);
 155                 /* DNS director failed lookups */
 156                 varnish_submit_derive (conf->instance, "dirdns", "cache_result",    "failed",     stats->dir_dns_failed);
 157                 /* DNS director cached lookups hit */
 158                 varnish_submit_derive (conf->instance, "dirdns", "cache_result",    "hits",       stats->dir_dns_hit);
 159                 /* DNS director full dnscache */
 160                 varnish_submit_derive (conf->instance, "dirdns", "cache_result",    "cache_full", stats->dir_dns_cache_full);
 161         }
 162 #endif
 163
 164         if (conf->collect_esi)
 165         {
 166                 /* ESI parse errors (unlock)   */
 167                 varnish_submit_derive (conf->instance, "esi", "total_operations", "error",   stats->esi_errors);
 168 #if HAVE_VARNISH_V2
 169                 /* Objects ESI parsed (unlock) */
 170                 varnish_submit_derive (conf->instance, "esi", "total_operations", "parsed",  stats->esi_parse);
 171 #else
 172                 /* ESI parse warnings (unlock) */
 173                 varnish_submit_derive (conf->instance, "esi", "total_operations", "warning", stats->esi_warnings);
 174 #endif
 175         }
 176
 177         if (conf->collect_backend)
 178         {
 179                 /* Backend conn. success       */
 180                 varnish_submit_derive (conf->instance, "backend", "connections", "success"      , stats->backend_conn);
 181                 /* Backend conn. not attempted */
 182                 varnish_submit_derive (conf->instance, "backend", "connections", "not-attempted", stats->backend_unhealthy);
 183                 /* Backend conn. too many      */
 184                 varnish_submit_derive (conf->instance, "backend", "connections", "too-many"     , stats->backend_busy);
 185                 /* Backend conn. failures      */
 186                 varnish_submit_derive (conf->instance, "backend", "connections", "failures"     , stats->backend_fail);
 187                 /* Backend conn. reuses        */
 188                 varnish_submit_derive (conf->instance, "backend", "connections", "reuses"       , stats->backend_reuse);
 189                 /* Backend conn. was closed    */
 190                 varnish_submit_derive (conf->instance, "backend", "connections", "was-closed"   , stats->backend_toolate);
 191                 /* Backend conn. recycles      */
 192                 varnish_submit_derive (conf->instance, "backend", "connections", "recycled"     , stats->backend_recycle);
 193 #if HAVE_VARNISH_V2
 194                 /* Backend conn. unused        */
 195                 varnish_submit_derive (conf->instance, "backend", "connections", "unused"       , stats->backend_unused);
 196 #else
 197                 /* Backend conn. retry         */
 198                 varnish_submit_derive (conf->instance, "backend", "connections", "retries"      , stats->backend_retry);
 199 #endif
 200                 /* Backend requests mades      */
 201                 varnish_submit_derive (conf->instance, "backend", "http_requests", "requests"   , stats->backend_req);
 202                 /* N backends                  */
 203                 varnish_submit_gauge  (conf->instance, "backend", "backends", "n_backends"      , stats->n_backend);
 204         }
 205
 206         if (conf->collect_fetch)
 207         {
 208                 /* Fetch head                */
 209                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "head"       , stats->fetch_head);
 210                 /* Fetch with length         */
 211                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "length"     , stats->fetch_length);
 212                 /* Fetch chunked             */
 213                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "chunked"    , stats->fetch_chunked);
 214                 /* Fetch EOF                 */
 215                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "eof"        , stats->fetch_eof);
 216                 /* Fetch bad headers         */
 217                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "bad_headers", stats->fetch_bad);
 218                 /* Fetch wanted close        */
 219                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "close"      , stats->fetch_close);
 220                 /* Fetch pre HTTP/1.1 closed */
 221                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "oldhttp"    , stats->fetch_oldhttp);
 222                 /* Fetch zero len            */
 223                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "zero"       , stats->fetch_zero);
 224                 /* Fetch failed              */
 225                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "failed"     , stats->fetch_failed);
 226 #if HAVE_VARNISH_V3
 227                 /* Fetch no body (1xx)       */
 228                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "no_body_1xx", stats->fetch_1xx);
 229                 /* Fetch no body (204)       */
 230                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "no_body_204", stats->fetch_204);
 231                 /* Fetch no body (304)       */
 232                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "no_body_304", stats->fetch_304);
 233 #endif
 234         }
 235
 236         if (conf->collect_hcb)
 237         {
 238                 /* HCB Lookups without lock */
 239                 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "lookup_nolock", stats->hcb_nolock);
 240                 /* HCB Lookups with lock    */
 241                 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "lookup_lock",   stats->hcb_lock);
 242                 /* HCB Inserts              */
 243                 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "insert",        stats->hcb_insert);
 244         }
 245
 246         if (conf->collect_objects)
 247         {
 248                 /* N expired objects             */
 249                 varnish_submit_derive (conf->instance, "objects", "total_objects", "expired",            stats->n_expired);
 250                 /* N LRU nuked objects           */
 251                 varnish_submit_derive (conf->instance, "objects", "total_objects", "lru_nuked",          stats->n_lru_nuked);
 252 #if HAVE_VARNISH_V2
 253                 /* N LRU saved objects           */
 254                 varnish_submit_derive (conf->instance, "objects", "total_objects", "lru_saved",          stats->n_lru_saved);
 255 #endif
 256                 /* N LRU moved objects           */
 257                 varnish_submit_derive (conf->instance, "objects", "total_objects", "lru_moved",          stats->n_lru_moved);
 258 #if HAVE_VARNISH_V2
 259                 /* N objects on deathrow         */
 260                 varnish_submit_derive (conf->instance, "objects", "total_objects", "deathrow",           stats->n_deathrow);
 261 #endif
 262                 /* HTTP header overflows         */
 263                 varnish_submit_derive (conf->instance, "objects", "total_objects", "header_overflow",    stats->losthdr);
 264                 /* Objects sent with sendfile    */
 265                 varnish_submit_derive (conf->instance, "objects", "total_objects", "sent_sendfile",      stats->n_objsendfile);
 266                 /* Objects sent with write       */
 267                 varnish_submit_derive (conf->instance, "objects", "total_objects", "sent_write",         stats->n_objwrite);
 268                 /* Objects overflowing workspace */
 269                 varnish_submit_derive (conf->instance, "objects", "total_objects", "workspace_overflow", stats->n_objoverflow);
 270         }
 271
 272 #if HAVE_VARNISH_V2
 273         if (conf->collect_purge)
 274         {
 275                 /* N total active purges      */
 276                 varnish_submit_derive (conf->instance, "purge", "total_operations", "total",            stats->n_purge);
 277                 /* N new purges added         */
 278                 varnish_submit_derive (conf->instance, "purge", "total_operations", "added",            stats->n_purge_add);
 279                 /* N old purges deleted       */
 280                 varnish_submit_derive (conf->instance, "purge", "total_operations", "deleted",          stats->n_purge_retire);
 281                 /* N objects tested           */
 282                 varnish_submit_derive (conf->instance, "purge", "total_operations", "objects_tested",   stats->n_purge_obj_test);
 283                 /* N regexps tested against   */
 284                 varnish_submit_derive (conf->instance, "purge", "total_operations", "regexps_tested",   stats->n_purge_re_test);
 285                 /* N duplicate purges removed */
 286                 varnish_submit_derive (conf->instance, "purge", "total_operations", "duplicate",        stats->n_purge_dups);
 287         }
 288 #else
 289         if (conf->collect_ban)
 290         {
 291                 /* N total active bans      */
 292                 varnish_submit_derive (conf->instance, "ban", "total_operations", "total",          stats->n_ban);
 293                 /* N new bans added         */
 294                 varnish_submit_derive (conf->instance, "ban", "total_operations", "added",          stats->n_ban_add);
 295                 /* N old bans deleted       */
 296                 varnish_submit_derive (conf->instance, "ban", "total_operations", "deleted",        stats->n_ban_retire);
 297                 /* N objects tested         */
 298                 varnish_submit_derive (conf->instance, "ban", "total_operations", "objects_tested", stats->n_ban_obj_test);
 299                 /* N regexps tested against */
 300                 varnish_submit_derive (conf->instance, "ban", "total_operations", "regexps_tested", stats->n_ban_re_test);
 301                 /* N duplicate bans removed */
 302                 varnish_submit_derive (conf->instance, "ban", "total_operations", "duplicate",      stats->n_ban_dups);
 303         }
 304 #endif
 305
 306         if (conf->collect_session)
 307         {
 308                 /* Session Closed     */
 309                 varnish_submit_derive (conf->instance, "session", "total_operations", "closed",    stats->sess_closed);
 310                 /* Session Pipeline   */
 311                 varnish_submit_derive (conf->instance, "session", "total_operations", "pipeline",  stats->sess_pipeline);
 312                 /* Session Read Ahead */
 313                 varnish_submit_derive (conf->instance, "session", "total_operations", "readahead", stats->sess_readahead);
 314                 /* Session Linger     */
 315                 varnish_submit_derive (conf->instance, "session", "total_operations", "linger",    stats->sess_linger);
 316                 /* Session herd       */
 317                 varnish_submit_derive (conf->instance, "session", "total_operations", "herd",      stats->sess_herd);
 318         }
 319
 320         if (conf->collect_shm)
 321         {
 322                 /* SHM records                 */
 323                 varnish_submit_derive (conf->instance, "shm", "total_operations", "records"   , stats->shm_records);
 324                 /* SHM writes                  */
 325                 varnish_submit_derive (conf->instance, "shm", "total_operations", "writes"    , stats->shm_writes);
 326                 /* SHM flushes due to overflow */
 327                 varnish_submit_derive (conf->instance, "shm", "total_operations", "flushes"   , stats->shm_flushes);
 328                 /* SHM MTX contention          */
 329                 varnish_submit_derive (conf->instance, "shm", "total_operations", "contention", stats->shm_cont);
 330                 /* SHM cycles through buffer   */
 331                 varnish_submit_derive (conf->instance, "shm", "total_operations", "cycles"    , stats->shm_cycles);
 332         }
 333
 334 #if HAVE_VARNISH_V2
 335         if (conf->collect_sm)
 336         {
 337                 /* allocator requests */
 338                 varnish_submit_derive (conf->instance, "sm", "total_requests", "nreq",         stats->sm_nreq);
 339                 /* outstanding allocations */
 340                 varnish_submit_gauge (conf->instance,  "sm", "requests", "outstanding",        stats->sm_nobj);
 341                 /* bytes allocated */
 342                 varnish_submit_derive (conf->instance,  "sm", "total_bytes", "allocated",      stats->sm_balloc);
 343                 /* bytes free */
 344                 varnish_submit_derive (conf->instance,  "sm", "total_bytes", "free",           stats->sm_bfree);
 345         }
 346
 347         if (conf->collect_sma)
 348         {
 349                 /* SMA allocator requests */
 350                 varnish_submit_derive (conf->instance, "sma", "total_requests", "nreq",    stats->sma_nreq);
 351                 /* SMA outstanding allocations */
 352                 varnish_submit_gauge (conf->instance,  "sma", "requests", "outstanding",   stats->sma_nobj);
 353                 /* SMA outstanding bytes */
 354                 varnish_submit_gauge (conf->instance,  "sma", "bytes", "outstanding",      stats->sma_nbytes);
 355                 /* SMA bytes allocated */
 356                 varnish_submit_derive (conf->instance,  "sma", "total_bytes", "allocated", stats->sma_balloc);
 357                 /* SMA bytes free */
 358                 varnish_submit_derive (conf->instance,  "sma", "total_bytes", "free" ,     stats->sma_bfree);
 359         }
 360 #endif
 361
 362         if (conf->collect_sms)
 363         {
 364                 /* SMS allocator requests */
 365                 varnish_submit_derive (conf->instance, "sms", "total_requests", "allocator", stats->sms_nreq);
 366                 /* SMS outstanding allocations */
 367                 varnish_submit_gauge (conf->instance,  "sms", "requests", "outstanding",     stats->sms_nobj);
 368                 /* SMS outstanding bytes */
 369                 varnish_submit_gauge (conf->instance,  "sms", "bytes", "outstanding",        stats->sms_nbytes);
 370                 /* SMS bytes allocated */
 371                 varnish_submit_derive (conf->instance,  "sms", "total_bytes", "allocated",   stats->sms_balloc);
 372                 /* SMS bytes freed */
 373                 varnish_submit_derive (conf->instance,  "sms", "total_bytes", "free",        stats->sms_bfree);
 374         }
 375
 376         if (conf->collect_struct)
 377         {
 378                 /* N struct sess_mem       */
 379                 varnish_submit_gauge (conf->instance, "struct", "current_sessions", "sess_mem",  stats->n_sess_mem);
 380                 /* N struct sess           */
 381                 varnish_submit_gauge (conf->instance, "struct", "current_sessions", "sess",      stats->n_sess);
 382                 /* N struct object         */
 383                 varnish_submit_gauge (conf->instance, "struct", "objects", "object",             stats->n_object);
 384                 /* N unresurrected objects */
 385                 varnish_submit_gauge (conf->instance, "struct", "objects", "vampireobject",      stats->n_vampireobject);
 386                 /* N struct objectcore     */
 387                 varnish_submit_gauge (conf->instance, "struct", "objects", "objectcore",         stats->n_objectcore);
 388                 /* N struct objecthead     */
 389                 varnish_submit_gauge (conf->instance, "struct", "objects", "objecthead",         stats->n_objecthead);
 390 #ifdef HAVE_VARNISH_V2
 391                 /* N struct smf            */
 392                 varnish_submit_gauge (conf->instance, "struct", "objects", "smf",                stats->n_smf);
 393                 /* N small free smf         */
 394                 varnish_submit_gauge (conf->instance, "struct", "objects", "smf_frag",           stats->n_smf_frag);
 395                 /* N large free smf         */
 396                 varnish_submit_gauge (conf->instance, "struct", "objects", "smf_large",          stats->n_smf_large);
 397                 /* N struct vbe_conn        */
 398                 varnish_submit_gauge (conf->instance, "struct", "objects", "vbe_conn",           stats->n_vbe_conn);
 399 #endif
 400         }
 401
 402         if (conf->collect_totals)
 403         {
 404                 /* Total Sessions */
 405                 varnish_submit_derive (conf->instance, "totals", "total_sessions", "sessions",  stats->s_sess);
 406                 /* Total Requests */
 407                 varnish_submit_derive (conf->instance, "totals", "total_requests", "requests",  stats->s_req);
 408                 /* Total pipe */
 409                 varnish_submit_derive (conf->instance, "totals", "total_operations", "pipe",    stats->s_pipe);
 410                 /* Total pass */
 411                 varnish_submit_derive (conf->instance, "totals", "total_operations", "pass",    stats->s_pass);
 412                 /* Total fetch */
 413                 varnish_submit_derive (conf->instance, "totals", "total_operations", "fetches", stats->s_fetch);
 414                 /* Total header bytes */
 415                 varnish_submit_derive (conf->instance, "totals", "total_bytes", "header-bytes", stats->s_hdrbytes);
 416                 /* Total body byte */
 417                 varnish_submit_derive (conf->instance, "totals", "total_bytes", "body-bytes",   stats->s_bodybytes);
 418         }
 419
 420         if (conf->collect_uptime)
 421         {
 422                 /* Client uptime */
 423                 varnish_submit_gauge (conf->instance, "uptime", "uptime", "client_uptime", stats->uptime);
 424         }
 425
 426         if (conf->collect_vcl)
 427         {
 428                 /* N vcl total     */
 429                 varnish_submit_gauge (conf->instance, "vcl", "vcl", "total_vcl",     stats->n_vcl);
 430                 /* N vcl available */
 431                 varnish_submit_gauge (conf->instance, "vcl", "vcl", "avail_vcl",     stats->n_vcl_avail);
 432                 /* N vcl discarded */
 433                 varnish_submit_gauge (conf->instance, "vcl", "vcl", "discarded_vcl", stats->n_vcl_discard);
 434         }
 435
 436         if (conf->collect_workers)
 437         {
 438                 /* worker threads */
 439                 varnish_submit_gauge (conf->instance, "workers", "threads", "worker",             stats->n_wrk);
 440                 /* worker threads created */
 441                 varnish_submit_derive (conf->instance, "workers", "total_threads", "created",     stats->n_wrk_create);
 442                 /* worker threads not created */
 443                 varnish_submit_derive (conf->instance, "workers", "total_threads", "failed",      stats->n_wrk_failed);
 444                 /* worker threads limited */
 445                 varnish_submit_derive (conf->instance, "workers", "total_threads", "limited",     stats->n_wrk_max);
 446                 /* dropped work requests */
 447                 varnish_submit_derive (conf->instance, "workers", "total_requests", "dropped",    stats->n_wrk_drop);
 448 #ifdef HAVE_VARNISH_V2
 449                 /* queued work requests */
 450                 varnish_submit_derive (conf->instance, "workers", "total_requests", "queued",     stats->n_wrk_queue);
 451                 /* overflowed work requests */
 452                 varnish_submit_derive (conf->instance, "workers", "total_requests", "overflowed", stats->n_wrk_overflow);
 453 #else
 454                 /* queued work requests */
 455                 varnish_submit_derive (conf->instance, "workers", "total_requests", "queued",       stats->n_wrk_queued);
 456                 /* work request queue length */
 457                 varnish_submit_derive (conf->instance, "workers", "total_requests", "queue_length", stats->n_wrk_lqueue);
 458 #endif
 459         }
 460 } /* }}} void varnish_monitor */
 461
 462 #if HAVE_VARNISH_V3
 463 static int varnish_read (user_data_t *ud) /* {{{ */
 464 {
 465         struct VSM_data *vd;
 466         const c_varnish_stats_t *stats;
 467
 468         user_config_t *conf;
 469
 470         if ((ud == NULL) || (ud->data == NULL))
 471                 return (EINVAL);
 472
 473         conf = ud->data;
 474
 475         vd = VSM_New();
 476         VSC_Setup(vd);
 477
 478         if (conf->instance != NULL)
 479         {
 480                 int status;
 481
 482                 status = VSM_n_Arg (vd, conf->instance);
 483                 if (status < 0)
 484                 {
 485                         ERROR ("varnish plugin: VSM_n_Arg (\"%s\") failed "
 486                                         "with status %i.",
 487                                         conf->instance, status);
 488                         return (-1);
 489                 }
 490         }
 491
 492         if (VSC_Open (vd, /* diag = */ 1))
 493         {
 494                 ERROR ("varnish plugin: Unable to load statistics.");
 495
 496                 return (-1);
 497         }
 498
 499         stats = VSC_Main(vd);
 500
 501         varnish_monitor (conf, stats);
 502         VSM_Close (vd);
 503
 504         return (0);
 505 } /* }}} */
 506 #else /* if HAVE_VARNISH_V2 */
 507 static int varnish_read (user_data_t *ud) /* {{{ */
 508 {
 509         const c_varnish_stats_t *stats;
 510
 511         user_config_t *conf;
 512
 513         if ((ud == NULL) || (ud->data == NULL))
 514                 return (EINVAL);
 515
 516         conf = ud->data;
 517
 518         stats = VSL_OpenStats (conf->instance);
 519         if (stats == NULL)
 520         {
 521                 ERROR ("Varnish plugin : unable to load statistics");
 522
 523                 return (-1);
 524         }
 525
 526         varnish_monitor (conf, stats);
 527
 528         return (0);
 529 } /* }}} */
 530 #endif
 531
 532 static void varnish_config_free (void *ptr) /* {{{ */
 533 {
 534         user_config_t *conf = ptr;
 535
 536         if (conf == NULL)
 537                 return;
 538
 539         sfree (conf->instance);
 540         sfree (conf);
 541 } /* }}} */
 542
 543 static int varnish_config_apply_default (user_config_t *conf) /* {{{ */
 544 {
 545         if (conf == NULL)
 546                 return (EINVAL);
 547
 548         conf->collect_backend     = 1;
 549         conf->collect_cache       = 1;
 550         conf->collect_connections = 1;
 551 #ifdef HAVE_VARNISH_V3
 552         conf->collect_dirdns      = 0;
 553 #endif
 554         conf->collect_esi         = 0;
 555         conf->collect_fetch       = 0;
 556         conf->collect_hcb         = 0;
 557         conf->collect_objects     = 0;
 558 #if HAVE_VARNISH_V2
 559         conf->collect_purge       = 0;
 560 #else
 561         conf->collect_ban         = 0;
 562 #endif
 563         conf->collect_session     = 0;
 564         conf->collect_shm         = 1;
 565 #if HAVE_VARNISH_V2
 566         conf->collect_sm          = 0;
 567         conf->collect_sma         = 0;
 568 #endif
 569         conf->collect_sms         = 0;
 570         conf->collect_struct      = 0;
 571         conf->collect_totals      = 0;
 572         conf->collect_uptime      = 0;
 573         conf->collect_vcl         = 0;
 574         conf->collect_workers     = 0;
 575
 576         return (0);
 577 } /* }}} int varnish_config_apply_default */
 578
 579 static int varnish_init (void) /* {{{ */
 580 {
 581         user_config_t *conf;
 582         user_data_t ud;
 583
 584         if (have_instance)
 585                 return (0);
 586
 587         conf = malloc (sizeof (*conf));
 588         if (conf == NULL)
 589                 return (ENOMEM);
 590         memset (conf, 0, sizeof (*conf));
 591
 592         /* Default settings: */
 593         conf->instance = NULL;
 594
 595         varnish_config_apply_default (conf);
 596
 597         ud.data = conf;
 598         ud.free_func = varnish_config_free;
 599
 600         plugin_register_complex_read (/* group = */ "varnish",
 601                         /* name      = */ "varnish/localhost",
 602                         /* callback  = */ varnish_read,
 603                         /* interval  = */ NULL,
 604                         /* user data = */ &ud);
 605
 606         return (0);
 607 } /* }}} int varnish_init */
 608
 609 static int varnish_config_instance (const oconfig_item_t *ci) /* {{{ */
 610 {
 611         user_config_t *conf;
 612         user_data_t ud;
 613         char callback_name[DATA_MAX_NAME_LEN];
 614         int i;
 615
 616         conf = malloc (sizeof (*conf));
 617         if (conf == NULL)
 618                 return (ENOMEM);
 619         memset (conf, 0, sizeof (*conf));
 620         conf->instance = NULL;
 621
 622         varnish_config_apply_default (conf);
 623
 624         if (ci->values_num == 1)
 625         {
 626                 int status;
 627
 628                 status = cf_util_get_string (ci, &conf->instance);
 629                 if (status != 0)
 630                 {
 631                         sfree (conf);
 632                         return (status);
 633                 }
 634                 assert (conf->instance != NULL);
 635
 636                 if (strcmp ("localhost", conf->instance) == 0)
 637                 {
 638                         sfree (conf->instance);
 639                         conf->instance = NULL;
 640                 }
 641         }
 642         else if (ci->values_num > 1)
 643         {
 644                 WARNING ("Varnish plugin: \"Instance\" blocks accept only "
 645                                 "one argument.");
 646                 return (EINVAL);
 647         }
 648
 649         for (i = 0; i < ci->children_num; i++)
 650         {
 651                 oconfig_item_t *child = ci->children + i;
 652
 653                 if (strcasecmp ("CollectCache", child->key) == 0)
 654                         cf_util_get_boolean (child, &conf->collect_cache);
 655                 else if (strcasecmp ("CollectConnections", child->key) == 0)
 656                         cf_util_get_boolean (child, &conf->collect_connections);
 657                 else if (strcasecmp ("CollectESI", child->key) == 0)
 658                         cf_util_get_boolean (child, &conf->collect_esi);
 659 #ifdef HAVE_VARNISH_V3
 660                 else if (strcasecmp ("CollectDirectorDNS", child->key) == 0)
 661                         cf_util_get_boolean (child, &conf->collect_dirdns);
 662 #endif
 663                 else if (strcasecmp ("CollectBackend", child->key) == 0)
 664                         cf_util_get_boolean (child, &conf->collect_backend);
 665                 else if (strcasecmp ("CollectFetch", child->key) == 0)
 666                         cf_util_get_boolean (child, &conf->collect_fetch);
 667                 else if (strcasecmp ("CollectHCB", child->key) == 0)
 668                         cf_util_get_boolean (child, &conf->collect_hcb);
 669                 else if (strcasecmp ("CollectObjects", child->key) == 0)
 670                         cf_util_get_boolean (child, &conf->collect_objects);
 671 #if HAVE_VARNISH_V2
 672                 else if (strcasecmp ("CollectPurge", child->key) == 0)
 673                         cf_util_get_boolean (child, &conf->collect_purge);
 674 #else
 675                 else if (strcasecmp ("CollectBan", child->key) == 0)
 676                         cf_util_get_boolean (child, &conf->collect_ban);
 677 #endif
 678                 else if (strcasecmp ("CollectSession", child->key) == 0)
 679                         cf_util_get_boolean (child, &conf->collect_session);
 680                 else if (strcasecmp ("CollectSHM", child->key) == 0)
 681                         cf_util_get_boolean (child, &conf->collect_shm);
 682                 else if (strcasecmp ("CollectSMS", child->key) == 0)
 683                         cf_util_get_boolean (child, &conf->collect_sms);
 684 #if HAVE_VARNISH_V2
 685                 else if (strcasecmp ("CollectSMA", child->key) == 0)
 686                         cf_util_get_boolean (child, &conf->collect_sma);
 687                 else if (strcasecmp ("CollectSM", child->key) == 0)
 688                         cf_util_get_boolean (child, &conf->collect_sm);
 689 #endif
 690                 else if (strcasecmp ("CollectStruct", child->key) == 0)
 691                         cf_util_get_boolean (child, &conf->collect_struct);
 692                 else if (strcasecmp ("CollectTotals", child->key) == 0)
 693                         cf_util_get_boolean (child, &conf->collect_totals);
 694                 else if (strcasecmp ("CollectUptime", child->key) == 0)
 695                         cf_util_get_boolean (child, &conf->collect_uptime);
 696                 else if (strcasecmp ("CollectVCL", child->key) == 0)
 697                         cf_util_get_boolean (child, &conf->collect_vcl);
 698                 else if (strcasecmp ("CollectWorkers", child->key) == 0)
 699                         cf_util_get_boolean (child, &conf->collect_workers);
 700                 else
 701                 {
 702                         WARNING ("Varnish plugin: Ignoring unknown "
 703                                         "configuration option: \"%s\". Did "
 704                                         "you forget to add an <Instance /> "
 705                                         "block around the configuration?",
 706                                         child->key);
 707                 }
 708         }
 709
 710         if (!conf->collect_cache
 711                         && !conf->collect_connections
 712                         && !conf->collect_esi
 713                         && !conf->collect_backend
 714 #ifdef HAVE_VARNISH_V3
 715                         && !conf->collect_dirdns
 716 #endif
 717                         && !conf->collect_fetch
 718                         && !conf->collect_hcb
 719                         && !conf->collect_objects
 720 #if HAVE_VARNISH_V2
 721                         && !conf->collect_purge
 722 #else
 723                         && !conf->collect_ban
 724 #endif
 725                         && !conf->collect_session
 726                         && !conf->collect_shm
 727                         && !conf->collect_sms
 728 #if HAVE_VARNISH_V2
 729                         && !conf->collect_sma
 730                         && !conf->collect_sm
 731 #endif
 732                         && !conf->collect_struct
 733                         && !conf->collect_totals
 734                         && !conf->collect_uptime
 735                         && !conf->collect_vcl
 736                         && !conf->collect_workers)
 737         {
 738                 WARNING ("Varnish plugin: No metric has been configured for "
 739                                 "instance \"%s\". Disabling this instance.",
 740                                 (conf->instance == NULL) ? "localhost" : conf->instance);
 741                 return (EINVAL);
 742         }
 743
 744         ssnprintf (callback_name, sizeof (callback_name), "varnish/%s",
 745                         (conf->instance == NULL) ? "localhost" : conf->instance);
 746
 747         ud.data = conf;
 748         ud.free_func = varnish_config_free;
 749
 750         plugin_register_complex_read (/* group = */ "varnish",
 751                         /* name      = */ callback_name,
 752                         /* callback  = */ varnish_read,
 753                         /* interval  = */ NULL,
 754                         /* user data = */ &ud);
 755
 756         have_instance = 1;
 757
 758         return (0);
 759 } /* }}} int varnish_config_instance */
 760
 761 static int varnish_config (oconfig_item_t *ci) /* {{{ */
 762 {
 763         int i;
 764
 765         for (i = 0; i < ci->children_num; i++)
 766         {
 767                 oconfig_item_t *child = ci->children + i;
 768
 769                 if (strcasecmp ("Instance", child->key) == 0)
 770                         varnish_config_instance (child);
 771                 else
 772                 {
 773                         WARNING ("Varnish plugin: Ignoring unknown "
 774                                         "configuration option: \"%s\"",
 775                                         child->key);
 776                 }
 777         }
 778
 779         return (0);
 780 } /* }}} int varnish_config */
 781
 782 void module_register (void) /* {{{ */
 783 {
 784         plugin_register_complex_config ("varnish", varnish_config);
 785         plugin_register_init ("varnish", varnish_init);
 786 } /* }}} */
 787
 788 /* vim: set sw=8 noet fdm=marker : */