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 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 verplant.org>
  24  **/
  25
  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"
 134
 135 #include <varnish/varnishapi.h>
 136 #if HAVE_VARNISH_V3
 137         #include <varnish/vsc.h>
 138     #define STAT_STRUCT VSC_C_main
 139 #endif
 140
 141 #if HAVE_VARNISH_V2
 142         #define STAT_STRUCT VSL_stats
 143 #endif
 144
 145 /* {{{ user_config_s */
 146 struct user_config_s {
 147         char *instance;
 148
 149         _Bool collect_cache;
 150         _Bool collect_connections;
 151         _Bool collect_esi;
 152         _Bool collect_backend;
 153         _Bool collect_fetch;
 154         _Bool collect_hcb;
 155         _Bool collect_shm;
 156         _Bool collect_sms;
 157 #if HAVE_VARNISH_V2
 158         _Bool collect_sm;
 159         _Bool collect_sma;
 160 #endif
 161         _Bool collect_totals;
 162         _Bool collect_workers;
 163 };
 164 typedef struct user_config_s user_config_t; /* }}} */
 165
 166 static _Bool have_instance = 0;
 167
 168 static int varnish_submit (const char *plugin_instance, /* {{{ */
 169                 const char *category, const char *type, const char *type_instance, value_t value)
 170 {
 171         value_list_t vl = VALUE_LIST_INIT;
 172
 173         vl.values = &value;
 174         vl.values_len = 1;
 175
 176         sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 177
 178         sstrncpy (vl.plugin, "varnish", sizeof (vl.plugin));
 179
 180         if (plugin_instance == NULL)
 181                 plugin_instance = "default";
 182
 183         ssnprintf (vl.plugin_instance, sizeof (vl.plugin_instance),
 184                 "%s-%s", plugin_instance, category);
 185
 186         sstrncpy (vl.type, type, sizeof (vl.type));
 187
 188         if (type_instance != NULL)
 189                 sstrncpy (vl.type_instance, type_instance,
 190                                 sizeof (vl.type_instance));
 191
 192         return (plugin_dispatch_values (&vl));
 193 } /* }}} int varnish_submit */
 194
 195 static int varnish_submit_gauge (const char *plugin_instance, /* {{{ */
 196                 const char *category, const char *type, const char *type_instance,
 197                 uint64_t gauge_value)
 198 {
 199         value_t value;
 200
 201         value.gauge = (gauge_t) gauge_value;
 202
 203         return (varnish_submit (plugin_instance, category, type, type_instance, value));
 204 } /* }}} int varnish_submit_gauge */
 205
 206 static int varnish_submit_derive (const char *plugin_instance, /* {{{ */
 207                 const char *category, const char *type, const char *type_instance,
 208                 uint64_t derive_value)
 209 {
 210         value_t value;
 211
 212         value.derive = (derive_t) derive_value;
 213
 214         return (varnish_submit (plugin_instance, category, type, type_instance, value));
 215 } /* }}} int varnish_submit_derive */
 216
 217 #if HAVE_VARNISH_V2
 218 static void varnish_monitor (const user_config_t *conf, struct varnish_stats *VSL_stats) /* {{{ */
 219 #endif
 220 #if HAVE_VARNISH_V3
 221 static void varnish_monitor (const user_config_t *conf, const struct VSC_C_main *VSC_C_main)
 222 #endif
 223 {
 224         if (conf->collect_cache)
 225         {
 226                 /* Cache hits */
 227                 varnish_submit_derive (conf->instance, "cache", "cache_result", "hit",     STAT_STRUCT->cache_hit);
 228                 /* Cache misses */
 229                 varnish_submit_derive (conf->instance, "cache", "cache_result", "miss",    STAT_STRUCT->cache_miss);
 230                 /* Cache hits for pass */
 231                 varnish_submit_derive (conf->instance, "cache", "cache_result", "hitpass", STAT_STRUCT->cache_hitpass);
 232         }
 233
 234         if (conf->collect_connections)
 235         {
 236                 /* Client connections accepted */
 237                 varnish_submit_derive (conf->instance, "connections", "connections", "accepted", STAT_STRUCT->client_conn);
 238                 /* Connection dropped, no sess */
 239                 varnish_submit_derive (conf->instance, "connections", "connections", "dropped" , STAT_STRUCT->client_drop);
 240                 /* Client requests received    */
 241                 varnish_submit_derive (conf->instance, "connections", "connections", "received", STAT_STRUCT->client_req);
 242         }
 243
 244         if (conf->collect_esi)
 245         {
 246 #if HAVE_VARNISH_V2
 247                 /* Objects ESI parsed (unlock) */
 248                 varnish_submit_derive (conf->instance, "esi", "total_operations", "parsed", STAT_STRUCT->esi_parse);
 249 #endif
 250                 /* ESI parse errors (unlock)   */
 251                 varnish_submit_derive (conf->instance, "esi", "total_operations", "error",  STAT_STRUCT->esi_errors);
 252         }
 253
 254         if (conf->collect_backend)
 255         {
 256                 /* Backend conn. success       */
 257                 varnish_submit_derive (conf->instance, "backend", "connections", "success"      , STAT_STRUCT->backend_conn);
 258                 /* Backend conn. not attempted */
 259                 varnish_submit_derive (conf->instance, "backend", "connections", "not-attempted", STAT_STRUCT->backend_unhealthy);
 260                 /* Backend conn. too many      */
 261                 varnish_submit_derive (conf->instance, "backend", "connections", "too-many"     , STAT_STRUCT->backend_busy);
 262                 /* Backend conn. failures      */
 263                 varnish_submit_derive (conf->instance, "backend", "connections", "failures"     , STAT_STRUCT->backend_fail);
 264                 /* Backend conn. reuses        */
 265                 varnish_submit_derive (conf->instance, "backend", "connections", "reuses"       , STAT_STRUCT->backend_reuse);
 266                 /* Backend conn. was closed    */
 267                 varnish_submit_derive (conf->instance, "backend", "connections", "was-closed"   , STAT_STRUCT->backend_toolate);
 268                 /* Backend conn. recycles      */
 269                 varnish_submit_derive (conf->instance, "backend", "connections", "recycled"     , STAT_STRUCT->backend_recycle);
 270 #if HAVE_VARNISH_V2
 271                 /* Backend conn. unused        */
 272                 varnish_submit_derive (conf->instance, "backend", "connections", "unused"       , STAT_STRUCT->backend_unused);
 273 #endif
 274         }
 275
 276         if (conf->collect_fetch)
 277         {
 278                 /* Fetch head                */
 279                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "head"       , STAT_STRUCT->fetch_head);
 280                 /* Fetch with length         */
 281                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "length"     , STAT_STRUCT->fetch_length);
 282                 /* Fetch chunked             */
 283                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "chunked"    , STAT_STRUCT->fetch_chunked);
 284                 /* Fetch EOF                 */
 285                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "eof"        , STAT_STRUCT->fetch_eof);
 286                 /* Fetch bad headers         */
 287                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "bad_headers", STAT_STRUCT->fetch_bad);
 288                 /* Fetch wanted close        */
 289                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "close"      , STAT_STRUCT->fetch_close);
 290                 /* Fetch pre HTTP/1.1 closed */
 291                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "oldhttp"    , STAT_STRUCT->fetch_oldhttp);
 292                 /* Fetch zero len            */
 293                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "zero"       , STAT_STRUCT->fetch_zero);
 294                 /* Fetch failed              */
 295                 varnish_submit_derive (conf->instance, "fetch", "http_requests", "failed"     , STAT_STRUCT->fetch_failed);
 296         }
 297
 298         if (conf->collect_hcb)
 299         {
 300                 /* HCB Lookups without lock */
 301                 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "lookup_nolock", STAT_STRUCT->hcb_nolock);
 302                 /* HCB Lookups with lock    */
 303                 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "lookup_lock",   STAT_STRUCT->hcb_lock);
 304                 /* HCB Inserts              */
 305                 varnish_submit_derive (conf->instance, "hcb", "cache_operation", "insert",        STAT_STRUCT->hcb_insert);
 306         }
 307
 308         if (conf->collect_shm)
 309         {
 310                 /* SHM records                 */
 311                 varnish_submit_derive (conf->instance, "shm", "total_operations", "records"   , STAT_STRUCT->shm_records);
 312                 /* SHM writes                  */
 313                 varnish_submit_derive (conf->instance, "shm", "total_operations", "writes"    , STAT_STRUCT->shm_writes);
 314                 /* SHM flushes due to overflow */
 315                 varnish_submit_derive (conf->instance, "shm", "total_operations", "flushes"   , STAT_STRUCT->shm_flushes);
 316                 /* SHM MTX contention          */
 317                 varnish_submit_derive (conf->instance, "shm", "total_operations", "contention", STAT_STRUCT->shm_cont);
 318                 /* SHM cycles through buffer   */
 319                 varnish_submit_derive (conf->instance, "shm", "total_operations", "cycles"    , STAT_STRUCT->shm_cycles);
 320         }
 321
 322 #if HAVE_VARNISH_V2
 323         if (conf->collect_sm)
 324         {
 325                 /* allocator requests */
 326                 varnish_submit_derive (conf->instance, "sm", "total_requests", "nreq",  STAT_STRUCT->sm_nreq);
 327                 /* outstanding allocations */
 328                 varnish_submit_gauge (conf->instance,  "sm", "requests", "outstanding", STAT_STRUCT->sm_nobj);
 329                 /* bytes allocated */
 330                 varnish_submit_derive (conf->instance,  "sm", "total_bytes", "allocated",      STAT_STRUCT->sm_balloc);
 331                 /* bytes free */
 332                 varnish_submit_derive (conf->instance,  "sm", "total_bytes", "free",           STAT_STRUCT->sm_bfree);
 333         }
 334
 335         if (conf->collect_sma)
 336         {
 337                 /* SMA allocator requests */
 338                 varnish_submit_derive (conf->instance, "sma", "total_requests", "nreq",  STAT_STRUCT->sma_nreq);
 339                 /* SMA outstanding allocations */
 340                 varnish_submit_gauge (conf->instance,  "sma", "requests", "outstanding", STAT_STRUCT->sma_nobj);
 341                 /* SMA outstanding bytes */
 342                 varnish_submit_gauge (conf->instance,  "sma", "bytes", "outstanding",    STAT_STRUCT->sma_nbytes);
 343                 /* SMA bytes allocated */
 344                 varnish_submit_derive (conf->instance,  "sma", "total_bytes", "allocated",      STAT_STRUCT->sma_balloc);
 345                 /* SMA bytes free */
 346                 varnish_submit_derive (conf->instance,  "sma", "total_bytes", "free" ,          STAT_STRUCT->sma_bfree);
 347         }
 348 #endif
 349
 350         if (conf->collect_sms)
 351         {
 352                 /* SMS allocator requests */
 353                 varnish_submit_derive (conf->instance, "sms", "total_requests", "allocator", STAT_STRUCT->sms_nreq);
 354                 /* SMS outstanding allocations */
 355                 varnish_submit_gauge (conf->instance,  "sms", "requests", "outstanding",     STAT_STRUCT->sms_nobj);
 356                 /* SMS outstanding bytes */
 357                 varnish_submit_gauge (conf->instance,  "sms", "bytes", "outstanding",        STAT_STRUCT->sms_nbytes);
 358                 /* SMS bytes allocated */
 359                 varnish_submit_derive (conf->instance,  "sms", "total_bytes", "allocated",          STAT_STRUCT->sms_balloc);
 360                 /* SMS bytes freed */
 361                 varnish_submit_derive (conf->instance,  "sms", "total_bytes", "free",               STAT_STRUCT->sms_bfree);
 362         }
 363
 364         if (conf->collect_totals)
 365         {
 366                 /* Total Sessions */
 367                 varnish_submit_derive (conf->instance, "totals", "total_sessions", "sessions",  STAT_STRUCT->s_sess);
 368                 /* Total Requests */
 369                 varnish_submit_derive (conf->instance, "totals", "total_requests", "requests",  STAT_STRUCT->s_req);
 370                 /* Total pipe */
 371                 varnish_submit_derive (conf->instance, "totals", "total_operations", "pipe",    STAT_STRUCT->s_pipe);
 372                 /* Total pass */
 373                 varnish_submit_derive (conf->instance, "totals", "total_operations", "pass",    STAT_STRUCT->s_pass);
 374                 /* Total fetch */
 375                 varnish_submit_derive (conf->instance, "totals", "total_operations", "fetches", STAT_STRUCT->s_fetch);
 376                 /* Total header bytes */
 377                 varnish_submit_derive (conf->instance, "totals", "total_bytes", "header-bytes", STAT_STRUCT->s_hdrbytes);
 378                 /* Total body byte */
 379                 varnish_submit_derive (conf->instance, "totals", "total_bytes", "body-bytes",   STAT_STRUCT->s_bodybytes);
 380         }
 381
 382         if (conf->collect_workers)
 383         {
 384                 /* worker threads */
 385                 varnish_submit_gauge (conf->instance, "workers", "threads", "worker",            STAT_STRUCT->n_wrk);
 386                 /* worker threads created */
 387                 varnish_submit_derive (conf->instance, "workers", "total_threads", "created",     STAT_STRUCT->n_wrk_create);
 388                 /* worker threads not created */
 389                 varnish_submit_derive (conf->instance, "workers", "total_threads", "failed",      STAT_STRUCT->n_wrk_failed);
 390                 /* worker threads limited */
 391                 varnish_submit_derive (conf->instance, "workers", "total_threads", "limited",     STAT_STRUCT->n_wrk_max);
 392 #ifdef HAVE_VARNISH_V2
 393                 /* queued work requests */
 394                 varnish_submit_derive (conf->instance, "workers", "total_requests", "queued",     STAT_STRUCT->n_wrk_queue);
 395                 /* overflowed work requests */
 396                 varnish_submit_derive (conf->instance, "workers", "total_requests", "overflowed", STAT_STRUCT->n_wrk_overflow);
 397 #endif
 398                 /* dropped work requests */
 399                 varnish_submit_derive (conf->instance, "workers", "total_requests", "dropped",    STAT_STRUCT->n_wrk_drop);
 400         }
 401 } /* }}} void varnish_monitor */
 402
 403 static int varnish_read (user_data_t *ud) /* {{{ */
 404 {
 405 #ifdef HAVE_VARNISH_V2
 406         struct varnish_stats *VSL_stats;
 407 #endif
 408
 409 #ifdef HAVE_VARNISH_V3
 410     struct VSM_data *vd;
 411         const struct VSC_C_main *VSC_C_main;
 412 #endif
 413
 414         user_config_t *conf;
 415
 416         if ((ud == NULL) || (ud->data == NULL))
 417                 return (EINVAL);
 418
 419         conf = ud->data;
 420
 421 #ifdef HAVE_VARNISH_V2
 422         VSL_stats = VSL_OpenStats (conf->instance);
 423         if (VSL_stats == NULL)
 424         {
 425                 ERROR ("Varnish plugin : unable to load statistics");
 426
 427                 return (-1);
 428         }
 429
 430         varnish_monitor (conf, VSL_stats);
 431 #endif
 432
 433 #ifdef HAVE_VARNISH_V3
 434         vd = VSM_New();
 435         VSC_Setup(vd);
 436         if (VSC_Open(vd, 1))
 437         {
 438                 ERROR ("Varnish plugin : unable to load statistics");
 439
 440                 return (-1);
 441         }
 442
 443         VSC_C_main = VSC_Main(vd);
 444
 445         varnish_monitor (conf, VSC_C_main);
 446         VSM_Close(vd);
 447 #endif
 448
 449     return (0);
 450 } /* }}} */
 451
 452 static void varnish_config_free (void *ptr) /* {{{ */
 453 {
 454         user_config_t *conf = ptr;
 455
 456         if (conf == NULL)
 457                 return;
 458
 459         sfree (conf->instance);
 460         sfree (conf);
 461 } /* }}} */
 462
 463 static int varnish_config_apply_default (user_config_t *conf) /* {{{ */
 464 {
 465         if (conf == NULL)
 466                 return (EINVAL);
 467
 468         conf->collect_backend     = 1;
 469         conf->collect_cache       = 1;
 470         conf->collect_connections = 1;
 471         conf->collect_esi         = 0;
 472         conf->collect_fetch       = 0;
 473         conf->collect_hcb         = 0;
 474         conf->collect_shm         = 1;
 475 #if HAVE_VARNISH_V2
 476         conf->collect_sm          = 0;
 477         conf->collect_sma         = 0;
 478 #endif
 479         conf->collect_sms         = 0;
 480         conf->collect_totals      = 0;
 481
 482         return (0);
 483 } /* }}} int varnish_config_apply_default */
 484
 485 static int varnish_init (void) /* {{{ */
 486 {
 487         user_config_t *conf;
 488         user_data_t ud;
 489
 490         if (have_instance)
 491                 return (0);
 492
 493         conf = malloc (sizeof (*conf));
 494         if (conf == NULL)
 495                 return (ENOMEM);
 496         memset (conf, 0, sizeof (*conf));
 497
 498         /* Default settings: */
 499         conf->instance = NULL;
 500
 501         varnish_config_apply_default (conf);
 502
 503         ud.data = conf;
 504         ud.free_func = varnish_config_free;
 505
 506         plugin_register_complex_read (/* group = */ "varnish",
 507                         /* name      = */ "varnish/localhost",
 508                         /* callback  = */ varnish_read,
 509                         /* interval  = */ NULL,
 510                         /* user data = */ &ud);
 511
 512         return (0);
 513 } /* }}} int varnish_init */
 514
 515 static int varnish_config_instance (const oconfig_item_t *ci) /* {{{ */
 516 {
 517         user_config_t *conf;
 518         user_data_t ud;
 519         char callback_name[DATA_MAX_NAME_LEN];
 520         int i;
 521
 522         conf = malloc (sizeof (*conf));
 523         if (conf == NULL)
 524                 return (ENOMEM);
 525         memset (conf, 0, sizeof (*conf));
 526         conf->instance = NULL;
 527
 528         varnish_config_apply_default (conf);
 529
 530         if (ci->values_num == 1)
 531         {
 532                 int status;
 533
 534                 status = cf_util_get_string (ci, &conf->instance);
 535                 if (status != 0)
 536                 {
 537                         sfree (conf);
 538                         return (status);
 539                 }
 540                 assert (conf->instance != NULL);
 541
 542                 if (strcmp ("localhost", conf->instance) == 0)
 543                 {
 544                         sfree (conf->instance);
 545                         conf->instance = NULL;
 546                 }
 547         }
 548         else if (ci->values_num > 1)
 549         {
 550                 WARNING ("Varnish plugin: \"Instance\" blocks accept only "
 551                                 "one argument.");
 552                 return (EINVAL);
 553         }
 554
 555         for (i = 0; i < ci->children_num; i++)
 556         {
 557                 oconfig_item_t *child = ci->children + i;
 558
 559                 if (strcasecmp ("CollectCache", child->key) == 0)
 560                         cf_util_get_boolean (child, &conf->collect_cache);
 561                 else if (strcasecmp ("CollectConnections", child->key) == 0)
 562                         cf_util_get_boolean (child, &conf->collect_connections);
 563                 else if (strcasecmp ("CollectESI", child->key) == 0)
 564                         cf_util_get_boolean (child, &conf->collect_esi);
 565                 else if (strcasecmp ("CollectBackend", child->key) == 0)
 566                         cf_util_get_boolean (child, &conf->collect_backend);
 567                 else if (strcasecmp ("CollectFetch", child->key) == 0)
 568                         cf_util_get_boolean (child, &conf->collect_fetch);
 569                 else if (strcasecmp ("CollectHCB", child->key) == 0)
 570                         cf_util_get_boolean (child, &conf->collect_hcb);
 571                 else if (strcasecmp ("CollectSHM", child->key) == 0)
 572                         cf_util_get_boolean (child, &conf->collect_shm);
 573                 else if (strcasecmp ("CollectSMS", child->key) == 0)
 574                         cf_util_get_boolean (child, &conf->collect_sms);
 575 #if HAVE_VARNISH_V2
 576                 else if (strcasecmp ("CollectSMA", child->key) == 0)
 577                         cf_util_get_boolean (child, &conf->collect_sma);
 578                 else if (strcasecmp ("CollectSM", child->key) == 0)
 579                         cf_util_get_boolean (child, &conf->collect_sm);
 580 #endif
 581                 else if (strcasecmp ("CollectTotals", child->key) == 0)
 582                         cf_util_get_boolean (child, &conf->collect_totals);
 583                 else if (strcasecmp ("CollectWorkers", child->key) == 0)
 584                         cf_util_get_boolean (child, &conf->collect_workers);
 585                 else
 586                 {
 587                         WARNING ("Varnish plugin: Ignoring unknown "
 588                                         "configuration option: \"%s\"",
 589                                         child->key);
 590                 }
 591         }
 592
 593         if (!conf->collect_cache
 594                         && !conf->collect_connections
 595                         && !conf->collect_esi
 596                         && !conf->collect_backend
 597                         && !conf->collect_fetch
 598                         && !conf->collect_hcb
 599                         && !conf->collect_shm
 600                         && !conf->collect_sms
 601 #if HAVE_VARNISH_V2
 602                         && !conf->collect_sma
 603                         && !conf->collect_sm
 604 #endif
 605                         && !conf->collect_totals
 606                         && !conf->collect_workers)
 607         {
 608                 WARNING ("Varnish plugin: No metric has been configured for "
 609                                 "instance \"%s\". Disabling this instance.",
 610                                 (conf->instance == NULL) ? "localhost" : conf->instance);
 611                 return (EINVAL);
 612         }
 613
 614         ssnprintf (callback_name, sizeof (callback_name), "varnish/%s",
 615                         (conf->instance == NULL) ? "localhost" : conf->instance);
 616
 617         ud.data = conf;
 618         ud.free_func = varnish_config_free;
 619
 620         plugin_register_complex_read (/* group = */ "varnish",
 621                         /* name      = */ callback_name,
 622                         /* callback  = */ varnish_read,
 623                         /* interval  = */ NULL,
 624                         /* user data = */ &ud);
 625
 626         have_instance = 1;
 627
 628         return (0);
 629 } /* }}} int varnish_config_instance */
 630
 631 static int varnish_config (oconfig_item_t *ci) /* {{{ */
 632 {
 633         int i;
 634
 635         for (i = 0; i < ci->children_num; i++)
 636         {
 637                 oconfig_item_t *child = ci->children + i;
 638
 639                 if (strcasecmp ("Instance", child->key) == 0)
 640                         varnish_config_instance (child);
 641                 else
 642                 {
 643                         WARNING ("Varnish plugin: Ignoring unknown "
 644                                         "configuration option: \"%s\"",
 645                                         child->key);
 646                 }
 647         }
 648
 649         return (0);
 650 } /* }}} int varnish_config */
 651
 652 void module_register (void) /* {{{ */
 653 {
 654         plugin_register_complex_config ("varnish", varnish_config);
 655         plugin_register_init ("varnish", varnish_init);
 656 } /* }}} */
 657
 658 /* vim: set sw=8 noet fdm=marker : */