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 #if HAVE_VARNISH_V4
  32 #include <varnish/vapi/vsm.h>
  33 #include <varnish/vapi/vsc.h>
  34 typedef struct VSC_C_main c_varnish_stats_t;
  35 #endif
  36
  37 #if HAVE_VARNISH_V3
  38 #include <varnish/varnishapi.h>
  39 #include <varnish/vsc.h>
  40 typedef struct VSC_C_main c_varnish_stats_t;
  41 #endif
  42
  43 #if HAVE_VARNISH_V2
  44 #include <varnish/varnishapi.h>
  45 typedef struct varnish_stats c_varnish_stats_t;
  46 #endif
  47
  48 /* {{{ user_config_s */
  49 struct user_config_s {
  50         char *instance;
  51
  52         _Bool collect_cache;
  53         _Bool collect_connections;
  54         _Bool collect_esi;
  55         _Bool collect_backend;
  56 #ifdef HAVE_VARNISH_V3
  57         _Bool collect_dirdns;
  58 #endif
  59         _Bool collect_fetch;
  60         _Bool collect_hcb;
  61         _Bool collect_objects;
  62 #if HAVE_VARNISH_V2
  63         _Bool collect_purge;
  64 #else
  65         _Bool collect_ban;
  66 #endif
  67         _Bool collect_session;
  68         _Bool collect_shm;
  69         _Bool collect_sms;
  70 #if HAVE_VARNISH_V2
  71         _Bool collect_sm;
  72         _Bool collect_sma;
  73 #endif
  74         _Bool collect_struct;
  75         _Bool collect_totals;
  76 #ifdef HAVE_VARNISH_V3
  77         _Bool collect_uptime;
  78 #endif
  79         _Bool collect_vcl;
  80         _Bool collect_workers;
  81 };
  82 typedef struct user_config_s user_config_t; /* }}} */
  83
  84 static _Bool have_instance = 0;
  85
  86 static int varnish_submit (const char *plugin_instance, /* {{{ */
  87                 const char *category, const char *type, const char *type_instance, value_t value)
  88 {
  89         value_list_t vl = VALUE_LIST_INIT;
  90
  91         vl.values = &value;
  92         vl.values_len = 1;
  93
  94         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
  95
  96         sstrncpy (vl.plugin, "varnish", sizeof (vl.plugin));
  97
  98         if (plugin_instance == NULL)
  99                 plugin_instance = "default";
 100
 101         ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
 102                 "%s-%s", plugin_instance, category);
 103
 104         sstrncpy (vl.type, type, sizeof (vl.type));
 105
 106         if (type_instance != NULL)
 107                 sstrncpy (vl.type_instance, type_instance,
 108                                 sizeof (vl.type_instance));
 109
 110         return (plugin_dispatch_values (&vl));
 111 } /* }}} int varnish_submit */
 112
 113 static int varnish_submit_gauge (const char *plugin_instance, /* {{{ */
 114                 const char *category, const char *type, const char *type_instance,
 115                 uint64_t gauge_value)
 116 {
 117         value_t value;
 118
 119         value.gauge = (gauge_t) gauge_value;
 120
 121         return (varnish_submit (plugin_instance, category, type, type_instance, value));
 122 } /* }}} int varnish_submit_gauge */
 123
 124 static int varnish_submit_derive (const char *plugin_instance, /* {{{ */
 125                 const char *category, const char *type, const char *type_instance,
 126                 uint64_t derive_value)
 127 {
 128         value_t value;
 129
 130         value.derive = (derive_t) derive_value;
 131
 132         return (varnish_submit (plugin_instance, category, type, type_instance, value));
 133 } /* }}} int varnish_submit_derive */
 134
 135 static void varnish_monitor (const user_config_t *conf, /* {{{ */
 136                 const c_varnish_stats_t *stats)
 137 {
 138         if (conf->collect_cache)
 139         {
 140                 /* Cache hits */
 141                 varnish_submit_derive (conf->instance, "cache", "cache_result", "hit",     stats->cache_hit);
 142                 /* Cache misses */
 143                 varnish_submit_derive (conf->instance, "cache", "cache_result", "miss",    stats->cache_miss);
 144                 /* Cache hits for pass */
 145                 varnish_submit_derive (conf->instance, "cache", "cache_result", "hitpass", stats->cache_hitpass);
 146         }
 147
 148         if (conf->collect_connections)
 149         {
 150                 /* Client connections accepted */
 151                 varnish_submit_derive (conf->instance, "connections", "connections", "accepted", stats->client_conn);
 152                 /* Connection dropped, no sess */
 153                 varnish_submit_derive (conf->instance, "connections", "connections", "dropped" , stats->client_drop);
 154                 /* Client requests received    */
 155                 varnish_submit_derive (conf->instance, "connections", "connections", "received", stats->client_req);
 156         }
 157
 158 #ifdef HAVE_VARNISH_V3
 159         if (conf->collect_dirdns)
 160         {
 161                 /* DNS director lookups */
 162                 varnish_submit_derive (conf->instance, "dirdns", "cache_operation", "lookups",    stats->dir_dns_lookups);
 163                 /* DNS director failed lookups */
 164                 varnish_submit_derive (conf->instance, "dirdns", "cache_result",    "failed",     stats->dir_dns_failed);
 165                 /* DNS director cached lookups hit */
 166                 varnish_submit_derive (conf->instance, "dirdns", "cache_result",    "hits",       stats->dir_dns_hit);
 167                 /* DNS director full dnscache */
 168                 varnish_submit_derive (conf->instance, "dirdns", "cache_result",    "cache_full", stats->dir_dns_cache_full);
 169         }
 170 #endif
 171
 172         if (conf->collect_esi)
 173         {
 174                 /* ESI parse errors (unlock)   */
 175                 varnish_submit_derive (conf->instance, "esi", "total_operations", "error",   stats->esi_errors);
 176 #if HAVE_VARNISH_V2
 177                 /* Objects ESI parsed (unlock) */
 178                 varnish_submit_derive (conf->instance, "esi", "total_operations", "parsed",  stats->esi_parse);
 179 #else
 180                 /* ESI parse warnings (unlock) */
 181                 varnish_submit_derive (conf->instance, "esi", "total_operations", "warning", stats->esi_warnings);
 182 #endif
 183         }
 184
 185         if (conf->collect_backend)
 186         {
 187                 /* Backend conn. success       */
 188                 varnish_submit_derive (conf->instance, "backend", "connections", "success"      , stats->backend_conn);
 189                 /* Backend conn. not attempted */
 190                 varnish_submit_derive (conf->instance, "backend", "connections", "not-attempted", stats->backend_unhealthy);
 191                 /* Backend conn. too many      */
 192                 varnish_submit_derive (conf->instance, "backend", "connections", "too-many"     , stats->backend_busy);
 193                 /* Backend conn. failures      */
 194                 varnish_submit_derive (conf->instance, "backend", "connections", "failures"     , stats->backend_fail);
 195                 /* Backend conn. reuses        */
 196                 varnish_submit_derive (conf->instance, "backend", "connections", "reuses"       , stats->backend_reuse);
 197                 /* Backend conn. was closed    */
 198                 varnish_submit_derive (conf->instance, "backend", "connections", "was-closed"   , stats->backend_toolate);
 199                 /* Backend conn. recycles      */
 200                 varnish_submit_derive (conf->instance, "backend", "connections", "recycled"     , stats->backend_recycle);
 201 #if HAVE_VARNISH_V2
 202                 /* Backend conn. unused        */
 203                 varnish_submit_derive (conf->instance, "backend", "connections", "unused"       , stats->backend_unused);
 204 #else
 205                 /* Backend conn. retry         */
 206                 varnish_submit_derive (conf->instance, "backend", "connections", "retries"      , stats->backend_retry);
 207 #endif
 208                 /* Backend requests mades      */
 209                 varnish_submit_derive (conf->instance, "backend", "http_requests", "requests"   , stats->backend_req);
 210                 /* N backends                  */
 211                 varnish_submit_gauge  (conf->instance, "backend", "backends", "n_backends"      , stats->n_backend);
 212         }
 213
 214         if (conf->collect_fetch)
 215         {
 216                 /* Fetch head                */
 217                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "head"       , stats->fetch_head);
 218                 /* Fetch with length         */
 219                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "length"     , stats->fetch_length);
 220                 /* Fetch chunked             */
 221                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "chunked"    , stats->fetch_chunked);
 222                 /* Fetch EOF                 */
 223                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "eof"        , stats->fetch_eof);
 224                 /* Fetch bad headers         */
 225                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "bad_headers", stats->fetch_bad);
 226                 /* Fetch wanted close        */
 227                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "close"      , stats->fetch_close);
 228                 /* Fetch pre HTTP/1.1 closed */
 229                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "oldhttp"    , stats->fetch_oldhttp);
 230                 /* Fetch zero len            */
 231                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "zero"       , stats->fetch_zero);
 232                 /* Fetch failed              */
 233                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "failed"     , stats->fetch_failed);
 234 #if HAVE_VARNISH_V3
 235                 /* Fetch no body (1xx)       */
 236                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "no_body_1xx", stats->fetch_1xx);
 237                 /* Fetch no body (204)       */
 238                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "no_body_204", stats->fetch_204);
 239                 /* Fetch no body (304)       */
 240                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "no_body_304", stats->fetch_304);
 241 #endif
 242         }
 243
 244         if (conf->collect_hcb)
 245         {
 246                 /* HCB Lookups without lock */
 247                 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "lookup_nolock", stats->hcb_nolock);
 248                 /* HCB Lookups with lock    */
 249                 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "lookup_lock",   stats->hcb_lock);
 250                 /* HCB Inserts              */
 251                 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "insert",        stats->hcb_insert);
 252         }
 253
 254         if (conf->collect_objects)
 255         {
 256                 /* N expired objects             */
 257                 varnish_submit_derive (conf->instance, "objects", "total_objects", "expired",            stats->n_expired);
 258                 /* N LRU nuked objects           */
 259                 varnish_submit_derive (conf->instance, "objects", "total_objects", "lru_nuked",          stats->n_lru_nuked);
 260 #if HAVE_VARNISH_V2
 261                 /* N LRU saved objects           */
 262                 varnish_submit_derive (conf->instance, "objects", "total_objects", "lru_saved",          stats->n_lru_saved);
 263 #endif
 264                 /* N LRU moved objects           */
 265                 varnish_submit_derive (conf->instance, "objects", "total_objects", "lru_moved",          stats->n_lru_moved);
 266 #if HAVE_VARNISH_V2
 267                 /* N objects on deathrow         */
 268                 varnish_submit_derive (conf->instance, "objects", "total_objects", "deathrow",           stats->n_deathrow);
 269 #endif
 270                 /* HTTP header overflows         */
 271                 varnish_submit_derive (conf->instance, "objects", "total_objects", "header_overflow",    stats->losthdr);
 272                 /* Objects sent with sendfile    */
 273                 varnish_submit_derive (conf->instance, "objects", "total_objects", "sent_sendfile",      stats->n_objsendfile);
 274                 /* Objects sent with write       */
 275                 varnish_submit_derive (conf->instance, "objects", "total_objects", "sent_write",         stats->n_objwrite);
 276                 /* Objects overflowing workspace */
 277                 varnish_submit_derive (conf->instance, "objects", "total_objects", "workspace_overflow", stats->n_objoverflow);
 278         }
 279
 280 #if HAVE_VARNISH_V2
 281         if (conf->collect_purge)
 282         {
 283                 /* N total active purges      */
 284                 varnish_submit_derive (conf->instance, "purge", "total_operations", "total",            stats->n_purge);
 285                 /* N new purges added         */
 286                 varnish_submit_derive (conf->instance, "purge", "total_operations", "added",            stats->n_purge_add);
 287                 /* N old purges deleted       */
 288                 varnish_submit_derive (conf->instance, "purge", "total_operations", "deleted",          stats->n_purge_retire);
 289                 /* N objects tested           */
 290                 varnish_submit_derive (conf->instance, "purge", "total_operations", "objects_tested",   stats->n_purge_obj_test);
 291                 /* N regexps tested against   */
 292                 varnish_submit_derive (conf->instance, "purge", "total_operations", "regexps_tested",   stats->n_purge_re_test);
 293                 /* N duplicate purges removed */
 294                 varnish_submit_derive (conf->instance, "purge", "total_operations", "duplicate",        stats->n_purge_dups);
 295         }
 296 #else
 297         if (conf->collect_ban)
 298         {
 299                 /* N total active bans      */
 300                 varnish_submit_derive (conf->instance, "ban", "total_operations", "total",          stats->n_ban);
 301                 /* N new bans added         */
 302                 varnish_submit_derive (conf->instance, "ban", "total_operations", "added",          stats->n_ban_add);
 303                 /* N old bans deleted       */
 304                 varnish_submit_derive (conf->instance, "ban", "total_operations", "deleted",        stats->n_ban_retire);
 305                 /* N objects tested         */
 306                 varnish_submit_derive (conf->instance, "ban", "total_operations", "objects_tested", stats->n_ban_obj_test);
 307                 /* N regexps tested against */
 308                 varnish_submit_derive (conf->instance, "ban", "total_operations", "regexps_tested", stats->n_ban_re_test);
 309                 /* N duplicate bans removed */
 310                 varnish_submit_derive (conf->instance, "ban", "total_operations", "duplicate",      stats->n_ban_dups);
 311         }
 312 #endif
 313
 314         if (conf->collect_session)
 315         {
 316                 /* Session Closed     */
 317                 varnish_submit_derive (conf->instance, "session", "total_operations", "closed",    stats->sess_closed);
 318                 /* Session Pipeline   */
 319                 varnish_submit_derive (conf->instance, "session", "total_operations", "pipeline",  stats->sess_pipeline);
 320                 /* Session Read Ahead */
 321                 varnish_submit_derive (conf->instance, "session", "total_operations", "readahead", stats->sess_readahead);
 322                 /* Session Linger     */
 323                 varnish_submit_derive (conf->instance, "session", "total_operations", "linger",    stats->sess_linger);
 324                 /* Session herd       */
 325                 varnish_submit_derive (conf->instance, "session", "total_operations", "herd",      stats->sess_herd);
 326         }
 327
 328         if (conf->collect_shm)
 329         {
 330                 /* SHM records                 */
 331                 varnish_submit_derive (conf->instance, "shm", "total_operations", "records"   , stats->shm_records);
 332                 /* SHM writes                  */
 333                 varnish_submit_derive (conf->instance, "shm", "total_operations", "writes"    , stats->shm_writes);
 334                 /* SHM flushes due to overflow */
 335                 varnish_submit_derive (conf->instance, "shm", "total_operations", "flushes"   , stats->shm_flushes);
 336                 /* SHM MTX contention          */
 337                 varnish_submit_derive (conf->instance, "shm", "total_operations", "contention", stats->shm_cont);
 338                 /* SHM cycles through buffer   */
 339                 varnish_submit_derive (conf->instance, "shm", "total_operations", "cycles"    , stats->shm_cycles);
 340         }
 341
 342 #if HAVE_VARNISH_V2
 343         if (conf->collect_sm)
 344         {
 345                 /* allocator requests */
 346                 varnish_submit_derive (conf->instance, "sm", "total_requests", "nreq",         stats->sm_nreq);
 347                 /* outstanding allocations */
 348                 varnish_submit_gauge (conf->instance,  "sm", "requests", "outstanding",        stats->sm_nobj);
 349                 /* bytes allocated */
 350                 varnish_submit_derive (conf->instance,  "sm", "total_bytes", "allocated",      stats->sm_balloc);
 351                 /* bytes free */
 352                 varnish_submit_derive (conf->instance,  "sm", "total_bytes", "free",           stats->sm_bfree);
 353         }
 354
 355         if (conf->collect_sma)
 356         {
 357                 /* SMA allocator requests */
 358                 varnish_submit_derive (conf->instance, "sma", "total_requests", "nreq",    stats->sma_nreq);
 359                 /* SMA outstanding allocations */
 360                 varnish_submit_gauge (conf->instance,  "sma", "requests", "outstanding",   stats->sma_nobj);
 361                 /* SMA outstanding bytes */
 362                 varnish_submit_gauge (conf->instance,  "sma", "bytes", "outstanding",      stats->sma_nbytes);
 363                 /* SMA bytes allocated */
 364                 varnish_submit_derive (conf->instance,  "sma", "total_bytes", "allocated", stats->sma_balloc);
 365                 /* SMA bytes free */
 366                 varnish_submit_derive (conf->instance,  "sma", "total_bytes", "free" ,     stats->sma_bfree);
 367         }
 368 #endif
 369
 370         if (conf->collect_sms)
 371         {
 372                 /* SMS allocator requests */
 373                 varnish_submit_derive (conf->instance, "sms", "total_requests", "allocator", stats->sms_nreq);
 374                 /* SMS outstanding allocations */
 375                 varnish_submit_gauge (conf->instance,  "sms", "requests", "outstanding",     stats->sms_nobj);
 376                 /* SMS outstanding bytes */
 377                 varnish_submit_gauge (conf->instance,  "sms", "bytes", "outstanding",        stats->sms_nbytes);
 378                 /* SMS bytes allocated */
 379                 varnish_submit_derive (conf->instance,  "sms", "total_bytes", "allocated",   stats->sms_balloc);
 380                 /* SMS bytes freed */
 381                 varnish_submit_derive (conf->instance,  "sms", "total_bytes", "free",        stats->sms_bfree);
 382         }
 383
 384         if (conf->collect_struct)
 385         {
 386                 /* N struct sess_mem       */
 387                 varnish_submit_gauge (conf->instance, "struct", "current_sessions", "sess_mem",  stats->n_sess_mem);
 388                 /* N struct sess           */
 389                 varnish_submit_gauge (conf->instance, "struct", "current_sessions", "sess",      stats->n_sess);
 390                 /* N struct object         */
 391                 varnish_submit_gauge (conf->instance, "struct", "objects", "object",             stats->n_object);
 392 #ifdef HAVE_VARNISH_V3
 393                 /* N unresurrected objects */
 394                 varnish_submit_gauge (conf->instance, "struct", "objects", "vampireobject",      stats->n_vampireobject);
 395                 /* N struct objectcore     */
 396                 varnish_submit_gauge (conf->instance, "struct", "objects", "objectcore",         stats->n_objectcore);
 397 #endif
 398                 /* N struct objecthead     */
 399                 varnish_submit_gauge (conf->instance, "struct", "objects", "objecthead",         stats->n_objecthead);
 400 #ifdef HAVE_VARNISH_V2
 401                 /* N struct smf            */
 402                 varnish_submit_gauge (conf->instance, "struct", "objects", "smf",                stats->n_smf);
 403                 /* N small free smf         */
 404                 varnish_submit_gauge (conf->instance, "struct", "objects", "smf_frag",           stats->n_smf_frag);
 405                 /* N large free smf         */
 406                 varnish_submit_gauge (conf->instance, "struct", "objects", "smf_large",          stats->n_smf_large);
 407                 /* N struct vbe_conn        */
 408                 varnish_submit_gauge (conf->instance, "struct", "objects", "vbe_conn",           stats->n_vbe_conn);
 409 #endif
 410         }
 411
 412         if (conf->collect_totals)
 413         {
 414                 /* Total Sessions */
 415                 varnish_submit_derive (conf->instance, "totals", "total_sessions", "sessions",  stats->s_sess);
 416                 /* Total Requests */
 417                 varnish_submit_derive (conf->instance, "totals", "total_requests", "requests",  stats->s_req);
 418                 /* Total pipe */
 419                 varnish_submit_derive (conf->instance, "totals", "total_operations", "pipe",    stats->s_pipe);
 420                 /* Total pass */
 421                 varnish_submit_derive (conf->instance, "totals", "total_operations", "pass",    stats->s_pass);
 422                 /* Total fetch */
 423                 varnish_submit_derive (conf->instance, "totals", "total_operations", "fetches", stats->s_fetch);
 424                 /* Total header bytes */
 425                 varnish_submit_derive (conf->instance, "totals", "total_bytes", "header-bytes", stats->s_hdrbytes);
 426                 /* Total body byte */
 427                 varnish_submit_derive (conf->instance, "totals", "total_bytes", "body-bytes",   stats->s_bodybytes);
 428         }
 429
 430 #ifdef HAVE_VARNISH_V3
 431         if (conf->collect_uptime)
 432         {
 433                 /* Client uptime */
 434                 varnish_submit_gauge (conf->instance, "uptime", "uptime", "client_uptime", stats->uptime);
 435         }
 436 #endif
 437
 438         if (conf->collect_vcl)
 439         {
 440                 /* N vcl total     */
 441                 varnish_submit_gauge (conf->instance, "vcl", "vcl", "total_vcl",     stats->n_vcl);
 442                 /* N vcl available */
 443                 varnish_submit_gauge (conf->instance, "vcl", "vcl", "avail_vcl",     stats->n_vcl_avail);
 444                 /* N vcl discarded */
 445                 varnish_submit_gauge (conf->instance, "vcl", "vcl", "discarded_vcl", stats->n_vcl_discard);
 446         }
 447
 448         if (conf->collect_workers)
 449         {
 450                 /* worker threads */
 451                 varnish_submit_gauge (conf->instance, "workers", "threads", "worker",             stats->n_wrk);
 452                 /* worker threads created */
 453                 varnish_submit_derive (conf->instance, "workers", "total_threads", "created",     stats->n_wrk_create);
 454                 /* worker threads not created */
 455                 varnish_submit_derive (conf->instance, "workers", "total_threads", "failed",      stats->n_wrk_failed);
 456                 /* worker threads limited */
 457                 varnish_submit_derive (conf->instance, "workers", "total_threads", "limited",     stats->n_wrk_max);
 458                 /* dropped work requests */
 459                 varnish_submit_derive (conf->instance, "workers", "total_requests", "dropped",    stats->n_wrk_drop);
 460 #ifdef HAVE_VARNISH_V2
 461                 /* queued work requests */
 462                 varnish_submit_derive (conf->instance, "workers", "total_requests", "queued",     stats->n_wrk_queue);
 463                 /* overflowed work requests */
 464                 varnish_submit_derive (conf->instance, "workers", "total_requests", "overflowed", stats->n_wrk_overflow);
 465 #else
 466                 /* queued work requests */
 467                 varnish_submit_derive (conf->instance, "workers", "total_requests", "queued",       stats->n_wrk_queued);
 468                 /* work request queue length */
 469                 varnish_submit_derive (conf->instance, "workers", "total_requests", "queue_length", stats->n_wrk_lqueue);
 470 #endif
 471         }
 472 } /* }}} void varnish_monitor */
 473
 474 #if HAVE_VARNISH_V3 || HAVE_VARNISH_V4
 475 static int varnish_read (user_data_t *ud) /* {{{ */
 476 {
 477         struct VSM_data *vd;
 478         const c_varnish_stats_t *stats;
 479
 480         user_config_t *conf;
 481
 482         if ((ud == NULL) || (ud->data == NULL))
 483                 return (EINVAL);
 484
 485         conf = ud->data;
 486
 487         vd = VSM_New();
 488 #if HAVE_VARNISH_V3
 489         VSC_Setup(vd);
 490 #endif
 491
 492         if (conf->instance != NULL)
 493         {
 494                 int status;
 495
 496                 status = VSM_n_Arg (vd, conf->instance);
 497                 if (status < 0)
 498                 {
 499                         ERROR ("varnish plugin: VSM_n_Arg (\"%s\") failed "
 500                                         "with status %i.",
 501                                         conf->instance, status);
 502                         return (-1);
 503                 }
 504         }
 505
 506 #if HAVE_VARNISH_V3
 507         if (VSC_Open (vd, /* diag = */ 1))
 508 #else /* if HAVE_VARNISH_V4 */
 509         if (VSM_Open (vd))
 510 #endif
 511         {
 512                 ERROR ("varnish plugin: Unable to load statistics.");
 513
 514                 return (-1);
 515         }
 516
 517 #if HAVE_VARNISH_V3
 518         stats = VSC_Main(vd);
 519 #else /* if HAVE_VARNISH_V4 */
 520         stats = VSC_Main(vd, NULL);
 521 #endif
 522
 523         varnish_monitor (conf, stats);
 524         VSM_Close (vd);
 525
 526         return (0);
 527 } /* }}} */
 528 #else /* if HAVE_VARNISH_V2 */
 529 static int varnish_read (user_data_t *ud) /* {{{ */
 530 {
 531         const c_varnish_stats_t *stats;
 532
 533         user_config_t *conf;
 534
 535         if ((ud == NULL) || (ud->data == NULL))
 536                 return (EINVAL);
 537
 538         conf = ud->data;
 539
 540         stats = VSL_OpenStats (conf->instance);
 541         if (stats == NULL)
 542         {
 543                 ERROR ("Varnish plugin : unable to load statistics");
 544
 545                 return (-1);
 546         }
 547
 548         varnish_monitor (conf, stats);
 549
 550         return (0);
 551 } /* }}} */
 552 #endif
 553
 554 static void varnish_config_free (void *ptr) /* {{{ */
 555 {
 556         user_config_t *conf = ptr;
 557
 558         if (conf == NULL)
 559                 return;
 560
 561         sfree (conf->instance);
 562         sfree (conf);
 563 } /* }}} */
 564
 565 static int varnish_config_apply_default (user_config_t *conf) /* {{{ */
 566 {
 567         if (conf == NULL)
 568                 return (EINVAL);
 569
 570         conf->collect_backend     = 1;
 571         conf->collect_cache       = 1;
 572         conf->collect_connections = 1;
 573 #ifdef HAVE_VARNISH_V3
 574         conf->collect_dirdns      = 0;
 575 #endif
 576         conf->collect_esi         = 0;
 577         conf->collect_fetch       = 0;
 578         conf->collect_hcb         = 0;
 579         conf->collect_objects     = 0;
 580 #if HAVE_VARNISH_V2
 581         conf->collect_purge       = 0;
 582 #else
 583         conf->collect_ban         = 0;
 584 #endif
 585         conf->collect_session     = 0;
 586         conf->collect_shm         = 1;
 587 #if HAVE_VARNISH_V2
 588         conf->collect_sm          = 0;
 589         conf->collect_sma         = 0;
 590 #endif
 591         conf->collect_sms         = 0;
 592         conf->collect_struct      = 0;
 593         conf->collect_totals      = 0;
 594 #ifdef HAVE_VARNISH_V3
 595         conf->collect_uptime      = 0;
 596 #endif
 597         conf->collect_vcl         = 0;
 598         conf->collect_workers     = 0;
 599
 600         return (0);
 601 } /* }}} int varnish_config_apply_default */
 602
 603 static int varnish_init (void) /* {{{ */
 604 {
 605         user_config_t *conf;
 606         user_data_t ud;
 607
 608         if (have_instance)
 609                 return (0);
 610
 611         conf = malloc (sizeof (*conf));
 612         if (conf == NULL)
 613                 return (ENOMEM);
 614         memset (conf, 0, sizeof (*conf));
 615
 616         /* Default settings: */
 617         conf->instance = NULL;
 618
 619         varnish_config_apply_default (conf);
 620
 621         ud.data = conf;
 622         ud.free_func = varnish_config_free;
 623
 624         plugin_register_complex_read (/* group = */ "varnish",
 625                         /* name      = */ "varnish/localhost",
 626                         /* callback  = */ varnish_read,
 627                         /* interval  = */ NULL,
 628                         /* user data = */ &ud);
 629
 630         return (0);
 631 } /* }}} int varnish_init */
 632
 633 static int varnish_config_instance (const oconfig_item_t *ci) /* {{{ */
 634 {
 635         user_config_t *conf;
 636         user_data_t ud;
 637         char callback_name[DATA_MAX_NAME_LEN];
 638         int i;
 639
 640         conf = malloc (sizeof (*conf));
 641         if (conf == NULL)
 642                 return (ENOMEM);
 643         memset (conf, 0, sizeof (*conf));
 644         conf->instance = NULL;
 645
 646         varnish_config_apply_default (conf);
 647
 648         if (ci->values_num == 1)
 649         {
 650                 int status;
 651
 652                 status = cf_util_get_string (ci, &conf->instance);
 653                 if (status != 0)
 654                 {
 655                         sfree (conf);
 656                         return (status);
 657                 }
 658                 assert (conf->instance != NULL);
 659
 660                 if (strcmp ("localhost", conf->instance) == 0)
 661                 {
 662                         sfree (conf->instance);
 663                         conf->instance = NULL;
 664                 }
 665         }
 666         else if (ci->values_num > 1)
 667         {
 668                 WARNING ("Varnish plugin: \"Instance\" blocks accept only "
 669                                 "one argument.");
 670                 return (EINVAL);
 671         }
 672
 673         for (i = 0; i < ci->children_num; i++)
 674         {
 675                 oconfig_item_t *child = ci->children + i;
 676
 677                 if (strcasecmp ("CollectCache", child->key) == 0)
 678                         cf_util_get_boolean (child, &conf->collect_cache);
 679                 else if (strcasecmp ("CollectConnections", child->key) == 0)
 680                         cf_util_get_boolean (child, &conf->collect_connections);
 681                 else if (strcasecmp ("CollectESI", child->key) == 0)
 682                         cf_util_get_boolean (child, &conf->collect_esi);
 683 #ifdef HAVE_VARNISH_V3
 684                 else if (strcasecmp ("CollectDirectorDNS", child->key) == 0)
 685                         cf_util_get_boolean (child, &conf->collect_dirdns);
 686 #endif
 687                 else if (strcasecmp ("CollectBackend", child->key) == 0)
 688                         cf_util_get_boolean (child, &conf->collect_backend);
 689                 else if (strcasecmp ("CollectFetch", child->key) == 0)
 690                         cf_util_get_boolean (child, &conf->collect_fetch);
 691                 else if (strcasecmp ("CollectHCB", child->key) == 0)
 692                         cf_util_get_boolean (child, &conf->collect_hcb);
 693                 else if (strcasecmp ("CollectObjects", child->key) == 0)
 694                         cf_util_get_boolean (child, &conf->collect_objects);
 695 #if HAVE_VARNISH_V2
 696                 else if (strcasecmp ("CollectPurge", child->key) == 0)
 697                         cf_util_get_boolean (child, &conf->collect_purge);
 698 #else
 699                 else if (strcasecmp ("CollectBan", child->key) == 0)
 700                         cf_util_get_boolean (child, &conf->collect_ban);
 701 #endif
 702                 else if (strcasecmp ("CollectSession", child->key) == 0)
 703                         cf_util_get_boolean (child, &conf->collect_session);
 704                 else if (strcasecmp ("CollectSHM", child->key) == 0)
 705                         cf_util_get_boolean (child, &conf->collect_shm);
 706                 else if (strcasecmp ("CollectSMS", child->key) == 0)
 707                         cf_util_get_boolean (child, &conf->collect_sms);
 708 #if HAVE_VARNISH_V2
 709                 else if (strcasecmp ("CollectSMA", child->key) == 0)
 710                         cf_util_get_boolean (child, &conf->collect_sma);
 711                 else if (strcasecmp ("CollectSM", child->key) == 0)
 712                         cf_util_get_boolean (child, &conf->collect_sm);
 713 #endif
 714                 else if (strcasecmp ("CollectStruct", child->key) == 0)
 715                         cf_util_get_boolean (child, &conf->collect_struct);
 716                 else if (strcasecmp ("CollectTotals", child->key) == 0)
 717                         cf_util_get_boolean (child, &conf->collect_totals);
 718 #ifdef HAVE_VARNISH_V3
 719                 else if (strcasecmp ("CollectUptime", child->key) == 0)
 720                         cf_util_get_boolean (child, &conf->collect_uptime);
 721 #endif
 722                 else if (strcasecmp ("CollectVCL", child->key) == 0)
 723                         cf_util_get_boolean (child, &conf->collect_vcl);
 724                 else if (strcasecmp ("CollectWorkers", child->key) == 0)
 725                         cf_util_get_boolean (child, &conf->collect_workers);
 726                 else
 727                 {
 728                         WARNING ("Varnish plugin: Ignoring unknown "
 729                                         "configuration option: \"%s\". Did "
 730                                         "you forget to add an <Instance /> "
 731                                         "block around the configuration?",
 732                                         child->key);
 733                 }
 734         }
 735
 736         if (!conf->collect_cache
 737                         && !conf->collect_connections
 738                         && !conf->collect_esi
 739                         && !conf->collect_backend
 740 #ifdef HAVE_VARNISH_V3
 741                         && !conf->collect_dirdns
 742 #endif
 743                         && !conf->collect_fetch
 744                         && !conf->collect_hcb
 745                         && !conf->collect_objects
 746 #if HAVE_VARNISH_V2
 747                         && !conf->collect_purge
 748 #else
 749                         && !conf->collect_ban
 750 #endif
 751                         && !conf->collect_session
 752                         && !conf->collect_shm
 753                         && !conf->collect_sms
 754 #if HAVE_VARNISH_V2
 755                         && !conf->collect_sma
 756                         && !conf->collect_sm
 757 #endif
 758                         && !conf->collect_struct
 759                         && !conf->collect_totals
 760 #ifdef HAVE_VARNISH_V3
 761                         && !conf->collect_uptime
 762 #endif
 763                         && !conf->collect_vcl
 764                         && !conf->collect_workers)
 765         {
 766                 WARNING ("Varnish plugin: No metric has been configured for "
 767                                 "instance \"%s\". Disabling this instance.",
 768                                 (conf->instance == NULL) ? "localhost" : conf->instance);
 769                 return (EINVAL);
 770         }
 771
 772         ssnprintf (callback_name, sizeof (callback_name), "varnish/%s",
 773                         (conf->instance == NULL) ? "localhost" : conf->instance);
 774
 775         ud.data = conf;
 776         ud.free_func = varnish_config_free;
 777
 778         plugin_register_complex_read (/* group = */ "varnish",
 779                         /* name      = */ callback_name,
 780                         /* callback  = */ varnish_read,
 781                         /* interval  = */ NULL,
 782                         /* user data = */ &ud);
 783
 784         have_instance = 1;
 785
 786         return (0);
 787 } /* }}} int varnish_config_instance */
 788
 789 static int varnish_config (oconfig_item_t *ci) /* {{{ */
 790 {
 791         int i;
 792
 793         for (i = 0; i < ci->children_num; i++)
 794         {
 795                 oconfig_item_t *child = ci->children + i;
 796
 797                 if (strcasecmp ("Instance", child->key) == 0)
 798                         varnish_config_instance (child);
 799                 else
 800                 {
 801                         WARNING ("Varnish plugin: Ignoring unknown "
 802                                         "configuration option: \"%s\"",
 803                                         child->key);
 804                 }
 805         }
 806
 807         return (0);
 808 } /* }}} int varnish_config */
 809
 810 void module_register (void) /* {{{ */
 811 {
 812         plugin_register_complex_config ("varnish", varnish_config);
 813         plugin_register_init ("varnish", varnish_init);
 814 } /* }}} */
 815
 816 /* vim: set sw=8 noet fdm=marker : */