src/netapp.c

   1 /**
   2  * collectd - src/netapp.c
   3  * Copyright (C) 2009  Sven Trenkel
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice shall be included in
  13  * all copies or substantial portions of the Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *   Sven Trenkel <collectd at semidefinite.de>
  25  **/
  26
  27 #include "collectd.h"
  28 #include "common.h"
  29
  30 #include <netapp_api.h>
  31
  32 #define HAS_ALL_FLAGS(has,needs) (((has) & (needs)) == (needs))
  33
  34 typedef struct host_config_s host_config_t;
  35 typedef void service_handler_t(host_config_t *host, na_elem_t *result, void *data);
  36
  37 struct cna_interval_s
  38 {
  39         time_t interval;
  40         time_t last_read;
  41 };
  42 typedef struct cna_interval_s cna_interval_t;
  43
  44 /*!
  45  * \brief Persistent data for system performance counters
  46  */
  47 #define CFG_SYSTEM_CPU  0x01
  48 #define CFG_SYSTEM_NET  0x02
  49 #define CFG_SYSTEM_OPS  0x04
  50 #define CFG_SYSTEM_DISK 0x08
  51 #define CFG_SYSTEM_ALL  0x0F
  52 typedef struct {
  53         uint32_t flags;
  54         cna_interval_t interval;
  55         na_elem_t *query;
  56 } cfg_system_t;
  57
  58 /*!
  59  * \brief Persistent data for WAFL performance counters. (a.k.a. cache performance)
  60  *
  61  * The cache counters use old counter values to calculate a hit ratio for each
  62  * counter. The "cfg_wafl_t" struct therefore contains old counter values along
  63  * with flags, which are set if the counter is valid.
  64  *
  65  * The function "cna_handle_wafl_data" will fill a new structure of this kind
  66  * with new values, then pass both, new and old data, to "submit_wafl_data".
  67  * That function calculates the hit ratios, submits the calculated values and
  68  * updates the old counter values for the next iteration.
  69  */
  70 #define CFG_WAFL_NAME_CACHE        0x0001
  71 #define CFG_WAFL_DIR_CACHE         0x0002
  72 #define CFG_WAFL_BUF_CACHE         0x0004
  73 #define CFG_WAFL_INODE_CACHE       0x0008
  74 #define CFG_WAFL_ALL               0x000F
  75 #define HAVE_WAFL_NAME_CACHE_HIT   0x0100
  76 #define HAVE_WAFL_NAME_CACHE_MISS  0x0200
  77 #define HAVE_WAFL_NAME_CACHE       (HAVE_WAFL_NAME_CACHE_HIT | HAVE_WAFL_NAME_CACHE_MISS)
  78 #define HAVE_WAFL_FIND_DIR_HIT     0x0400
  79 #define HAVE_WAFL_FIND_DIR_MISS    0x0800
  80 #define HAVE_WAFL_FIND_DIR         (HAVE_WAFL_FIND_DIR_HIT | HAVE_WAFL_FIND_DIR_MISS)
  81 #define HAVE_WAFL_BUF_HASH_HIT     0x1000
  82 #define HAVE_WAFL_BUF_HASH_MISS    0x2000
  83 #define HAVE_WAFL_BUF_HASH         (HAVE_WAFL_BUF_HASH_HIT | HAVE_WAFL_BUF_HASH_MISS)
  84 #define HAVE_WAFL_INODE_CACHE_HIT  0x4000
  85 #define HAVE_WAFL_INODE_CACHE_MISS 0x8000
  86 #define HAVE_WAFL_INODE_CACHE      (HAVE_WAFL_INODE_CACHE_HIT | HAVE_WAFL_INODE_CACHE_MISS)
  87 #define HAVE_WAFL_ALL              0xff00
  88 typedef struct {
  89         uint32_t flags;
  90         cna_interval_t interval;
  91         na_elem_t *query;
  92
  93         time_t timestamp;
  94         uint64_t name_cache_hit;
  95         uint64_t name_cache_miss;
  96         uint64_t find_dir_hit;
  97         uint64_t find_dir_miss;
  98         uint64_t buf_hash_hit;
  99         uint64_t buf_hash_miss;
 100         uint64_t inode_cache_hit;
 101         uint64_t inode_cache_miss;
 102 } cfg_wafl_t;
 103
 104 /*!
 105  * \brief Persistent data for volume performance data.
 106  *
 107  * The code below uses the difference of the operations and latency counters to
 108  * calculate an average per-operation latency. For this, old counters need to
 109  * be stored in the "data_volume_perf_t" structure. The byte-counters are just
 110  * kept for completeness sake. The "flags" member indicates if each counter is
 111  * valid or not.
 112  *
 113  * The "query_volume_perf_data" function will fill a new struct of this type
 114  * and pass both, old and new data, to "submit_volume_perf_data". In that
 115  * function, the per-operation latency is calculated and dispatched, then the
 116  * old counters are updated.
 117  */
 118 #define CFG_VOLUME_PERF_INIT           0x0001
 119 #define CFG_VOLUME_PERF_IO             0x0002
 120 #define CFG_VOLUME_PERF_OPS            0x0003
 121 #define CFG_VOLUME_PERF_LATENCY        0x0008
 122 #define CFG_VOLUME_PERF_ALL            0x000F
 123 #define HAVE_VOLUME_PERF_BYTES_READ    0x0010
 124 #define HAVE_VOLUME_PERF_BYTES_WRITE   0x0020
 125 #define HAVE_VOLUME_PERF_OPS_READ      0x0040
 126 #define HAVE_VOLUME_PERF_OPS_WRITE     0x0080
 127 #define HAVE_VOLUME_PERF_LATENCY_READ  0x0100
 128 #define HAVE_VOLUME_PERF_LATENCY_WRITE 0x0200
 129 #define HAVE_VOLUME_PERF_ALL           0x03F0
 130 typedef struct {
 131         uint32_t flags;
 132 } cfg_volume_perf_t;
 133
 134 typedef struct {
 135         uint32_t flags;
 136         time_t timestamp;
 137         uint64_t read_bytes;
 138         uint64_t write_bytes;
 139         uint64_t read_ops;
 140         uint64_t write_ops;
 141         uint64_t read_latency;
 142         uint64_t write_latency;
 143 } data_volume_perf_t;
 144
 145 /*!
 146  * \brief Configuration struct for volume usage data (free / used).
 147  */
 148 #define CFG_VOLUME_USAGE_INIT           0x0001
 149 #define CFG_VOLUME_USAGE_DF             0x0002
 150 #define CFG_VOLUME_USAGE_SNAP           0x0004
 151 #define HAVE_VOLUME_USAGE_SNAP          0x0008
 152 typedef struct {
 153         uint32_t flags;
 154         uint64_t snap_used;
 155 } cfg_volume_usage_t;
 156
 157 typedef struct service_config_s {
 158         na_elem_t *query;
 159         service_handler_t *handler;
 160         int multiplier;
 161         int skip_countdown;
 162         int interval;
 163         void *data;
 164         struct service_config_s *next;
 165 } cfg_service_t;
 166 #define SERVICE_INIT {0, 0, 1, 1, 0, 0, 0}
 167
 168 /*!
 169  * \brief Struct representing a volume.
 170  *
 171  * A volume currently has a name and two sets of values:
 172  *
 173  *  - Performance data, such as bytes read/written, number of operations
 174  *    performed and average time per operation.
 175  *
 176  *  - Usage data, i. e. amount of used and free space in the volume.
 177  */
 178 typedef struct volume_s {
 179         char *name;
 180         data_volume_perf_t perf_data;
 181         cfg_volume_usage_t cfg_volume_usage;
 182         struct volume_s *next;
 183 } volume_t;
 184
 185 /*!
 186  * \brief A disk in the NetApp.
 187  *
 188  * A disk doesn't have any more information than its name at the moment.
 189  * The name includes the "disk_" prefix.
 190  */
 191 #define HAVE_DISK_BUSY   0x10
 192 #define HAVE_DISK_BASE   0x20
 193 #define HAVE_DISK_ALL    0x30
 194 typedef struct disk_s {
 195         char *name;
 196         uint32_t flags;
 197         time_t timestamp;
 198         uint64_t disk_busy;
 199         uint64_t base_for_disk_busy;
 200         double disk_busy_percent;
 201         struct disk_s *next;
 202 } disk_t;
 203
 204 #define CFG_DISK_BUSIEST 0x01
 205 #define CFG_DISK_ALL     0x01
 206 typedef struct {
 207         uint32_t flags;
 208         cna_interval_t interval;
 209         na_elem_t *query;
 210         disk_t *disks;
 211 } cfg_disk_t;
 212
 213 struct host_config_s {
 214         char *name;
 215         na_server_transport_t protocol;
 216         char *host;
 217         int port;
 218         char *username;
 219         char *password;
 220         int interval;
 221
 222         na_server_t *srv;
 223         cfg_service_t *services;
 224         cfg_disk_t *cfg_disk;
 225         cfg_wafl_t *cfg_wafl;
 226         cfg_system_t *cfg_system;
 227         volume_t *volumes;
 228
 229         struct host_config_s *next;
 230 };
 231 #define HOST_INIT { NULL, NA_SERVER_TRANSPORT_HTTPS, NULL, 0, NULL, NULL, 0, \
 232         NULL, NULL, NULL, NULL, \
 233         NULL}
 234
 235 static host_config_t *global_host_config;
 236
 237 /*
 238  * Free functions
 239  *
 240  * Used to free the various structures above.
 241  */
 242 static void free_volume (volume_t *volume) /* {{{ */
 243 {
 244         volume_t *next;
 245
 246         next = volume->next;
 247
 248         sfree (volume->name);
 249         sfree (volume);
 250
 251         free_volume (next);
 252 } /* }}} void free_volume */
 253
 254 static void free_disk (disk_t *disk) /* {{{ */
 255 {
 256         disk_t *next;
 257
 258         next = disk->next;
 259
 260         sfree (disk->name);
 261         sfree (disk);
 262
 263         free_disk (next);
 264 } /* }}} void free_disk */
 265
 266 static void free_cfg_wafl (cfg_wafl_t *cw) /* {{{ */
 267 {
 268         if (cw == NULL)
 269                 return;
 270
 271         if (cw->query != NULL)
 272                 na_elem_free (cw->query);
 273
 274         sfree (cw);
 275 } /* }}} void free_cfg_wafl */
 276
 277 static void free_cfg_disk (cfg_disk_t *cfg_disk) /* {{{ */
 278 {
 279         if (cfg_disk == NULL)
 280                 return;
 281
 282         if (cfg_disk->query != NULL)
 283                 na_elem_free (cfg_disk->query);
 284
 285         free_disk (cfg_disk->disks);
 286         sfree (cfg_disk);
 287 } /* }}} void free_cfg_disk */
 288
 289 static void free_cfg_system (cfg_system_t *cs) /* {{{ */
 290 {
 291         if (cs == NULL)
 292                 return;
 293
 294         if (cs->query != NULL)
 295                 na_elem_free (cs->query);
 296
 297         sfree (cs);
 298 } /* }}} void free_cfg_system */
 299
 300 static void free_cfg_service (cfg_service_t *service) /* {{{ */
 301 {
 302         cfg_service_t *next;
 303
 304         if (service == NULL)
 305                 return;
 306
 307         next = service->next;
 308
 309         /* FIXME: Free service->data? */
 310         na_elem_free(service->query);
 311
 312         sfree (service);
 313
 314         free_cfg_service (next);
 315 } /* }}} void free_cfg_service */
 316
 317 static void free_host_config (host_config_t *hc) /* {{{ */
 318 {
 319         host_config_t *next;
 320
 321         if (hc == NULL)
 322                 return;
 323
 324         next = hc->next;
 325
 326         sfree (hc->name);
 327         sfree (hc->host);
 328         sfree (hc->username);
 329         sfree (hc->password);
 330
 331         free_cfg_service (hc->services);
 332         free_cfg_disk (hc->cfg_disk);
 333         free_cfg_wafl (hc->cfg_wafl);
 334         free_cfg_system (hc->cfg_system);
 335         free_volume (hc->volumes);
 336
 337         sfree (hc);
 338
 339         free_host_config (next);
 340 } /* }}} void free_host_config */
 341
 342 /*
 343  * Auxiliary functions
 344  *
 345  * Used to look up volumes and disks or to handle flags.
 346  */
 347 static volume_t *get_volume (host_config_t *host, const char *name, /* {{{ */
 348                 uint32_t vol_usage_flags, uint32_t vol_perf_flags)
 349 {
 350         volume_t *v;
 351
 352         if (name == NULL)
 353                 return (NULL);
 354
 355         /* Make sure the default flags include the init-bit. */
 356         if (vol_usage_flags != 0)
 357                 vol_usage_flags |= CFG_VOLUME_USAGE_INIT;
 358         if (vol_perf_flags != 0)
 359                 vol_perf_flags |= CFG_VOLUME_PERF_INIT;
 360
 361         for (v = host->volumes; v; v = v->next) {
 362                 if (strcmp(v->name, name) != 0)
 363                         continue;
 364
 365                 /* Check if the flags have been initialized. */
 366                 if (((v->cfg_volume_usage.flags & CFG_VOLUME_USAGE_INIT) == 0)
 367                                 && (vol_usage_flags != 0))
 368                         v->cfg_volume_usage.flags = vol_usage_flags;
 369                 if (((v->perf_data.flags & CFG_VOLUME_PERF_INIT) == 0)
 370                                 && (vol_perf_flags != 0))
 371                         v->perf_data.flags = vol_perf_flags;
 372
 373                 return v;
 374         }
 375
 376         DEBUG ("netapp plugin: Allocating new entry for volume %s.", name);
 377         v = malloc(sizeof(*v));
 378         if (v == NULL)
 379                 return (NULL);
 380         memset (v, 0, sizeof (*v));
 381
 382         v->cfg_volume_usage.flags = vol_usage_flags;
 383         v->perf_data.flags = vol_perf_flags;
 384
 385         v->name = strdup(name);
 386         if (v->name == NULL) {
 387                 sfree (v);
 388                 return (NULL);
 389         }
 390
 391         v->next = host->volumes;
 392         host->volumes = v;
 393
 394         return v;
 395 } /* }}} volume_t *get_volume */
 396
 397 static disk_t *get_disk(cfg_disk_t *cd, const char *name) /* {{{ */
 398 {
 399         disk_t *d;
 400
 401         if ((cd == NULL) || (name == NULL))
 402                 return (NULL);
 403
 404         for (d = cd->disks; d != NULL; d = d->next) {
 405                 if (strcmp(d->name, name) == 0)
 406                         return d;
 407         }
 408
 409         d = malloc(sizeof(*d));
 410         if (d == NULL)
 411                 return (NULL);
 412         memset (d, 0, sizeof (*d));
 413         d->next = NULL;
 414
 415         d->name = strdup(name);
 416         if (d->name == NULL) {
 417                 sfree (d);
 418                 return (NULL);
 419         }
 420
 421         d->next = cd->disks;
 422         cd->disks = d;
 423
 424         return d;
 425 } /* }}} disk_t *get_disk */
 426
 427 static void host_set_all_perf_data_flags(const host_config_t *host, /* {{{ */
 428                 uint32_t flag, _Bool set)
 429 {
 430         volume_t *v;
 431
 432         for (v = host->volumes; v; v = v->next) {
 433                 if (set)
 434                         v->perf_data.flags |= flag;
 435                 else /* if (!set) */
 436                         v->perf_data.flags &= ~flag;
 437         }
 438 } /* }}} void host_set_all_perf_data_flags */
 439
 440 static void host_set_all_cfg_volume_usage_flags(const host_config_t *host, /* {{{ */
 441                 uint32_t flag, _Bool set) {
 442         volume_t *v;
 443
 444         for (v = host->volumes; v; v = v->next) {
 445                 if (set)
 446                         v->cfg_volume_usage.flags |= flag;
 447                 else /* if (!set) */
 448                         v->cfg_volume_usage.flags &= ~flag;
 449         }
 450 } /* }}} void host_set_all_cfg_volume_usage_flags */
 451
 452 /*
 453  * Various submit functions.
 454  *
 455  * They all eventually call "submit_values" which creates a value_list_t and
 456  * dispatches it to the daemon.
 457  */
 458 static int submit_values (const char *host, /* {{{ */
 459                 const char *plugin_inst,
 460                 const char *type, const char *type_inst,
 461                 value_t *values, int values_len,
 462                 time_t timestamp)
 463 {
 464         value_list_t vl = VALUE_LIST_INIT;
 465
 466         vl.values = values;
 467         vl.values_len = values_len;
 468
 469         if (timestamp > 0)
 470                 vl.time = timestamp;
 471
 472         if (host != NULL)
 473                 sstrncpy (vl.host, host, sizeof (vl.host));
 474         else
 475                 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 476         sstrncpy (vl.plugin, "netapp", sizeof (vl.plugin));
 477         if (plugin_inst != NULL)
 478                 sstrncpy (vl.plugin_instance, plugin_inst, sizeof (vl.plugin_instance));
 479         sstrncpy (vl.type, type, sizeof (vl.type));
 480         if (type_inst != NULL)
 481                 sstrncpy (vl.type_instance, type_inst, sizeof (vl.type_instance));
 482
 483         return (plugin_dispatch_values (&vl));
 484 } /* }}} int submit_uint64 */
 485
 486 static int submit_two_counters (const char *host, const char *plugin_inst, /* {{{ */
 487                 const char *type, const char *type_inst, counter_t val0, counter_t val1,
 488                 time_t timestamp)
 489 {
 490         value_t values[2];
 491
 492         values[0].counter = val0;
 493         values[1].counter = val1;
 494
 495         return (submit_values (host, plugin_inst, type, type_inst,
 496                                 values, 2, timestamp));
 497 } /* }}} int submit_two_counters */
 498
 499 static int submit_counter (const char *host, const char *plugin_inst, /* {{{ */
 500                 const char *type, const char *type_inst, counter_t counter, time_t timestamp)
 501 {
 502         value_t v;
 503
 504         v.counter = counter;
 505
 506         return (submit_values (host, plugin_inst, type, type_inst,
 507                                 &v, 1, timestamp));
 508 } /* }}} int submit_counter */
 509
 510 static int submit_two_gauge (const char *host, const char *plugin_inst, /* {{{ */
 511                 const char *type, const char *type_inst, gauge_t val0, gauge_t val1,
 512                 time_t timestamp)
 513 {
 514         value_t values[2];
 515
 516         values[0].gauge = val0;
 517         values[1].gauge = val1;
 518
 519         return (submit_values (host, plugin_inst, type, type_inst,
 520                                 values, 2, timestamp));
 521 } /* }}} int submit_two_gauge */
 522
 523 static int submit_double (const char *host, const char *plugin_inst, /* {{{ */
 524                 const char *type, const char *type_inst, double d, time_t timestamp)
 525 {
 526         value_t v;
 527
 528         v.gauge = (gauge_t) d;
 529
 530         return (submit_values (host, plugin_inst, type, type_inst,
 531                                 &v, 1, timestamp));
 532 } /* }}} int submit_uint64 */
 533
 534 /* Calculate hit ratio from old and new counters and submit the resulting
 535  * percentage. Used by "submit_wafl_data". */
 536 static int submit_cache_ratio (const char *host, /* {{{ */
 537                 const char *plugin_inst,
 538                 const char *type_inst,
 539                 uint64_t new_hits,
 540                 uint64_t new_misses,
 541                 uint64_t old_hits,
 542                 uint64_t old_misses,
 543                 time_t timestamp)
 544 {
 545         value_t v;
 546
 547         if ((new_hits >= old_hits) && (new_misses >= old_misses)) {
 548                 uint64_t hits;
 549                 uint64_t misses;
 550
 551                 hits = new_hits - old_hits;
 552                 misses = new_misses - old_misses;
 553
 554                 v.gauge = 100.0 * ((gauge_t) hits) / ((gauge_t) (hits + misses));
 555         } else {
 556                 v.gauge = NAN;
 557         }
 558
 559         return (submit_values (host, plugin_inst, "cache_ratio", type_inst,
 560                                 &v, 1, timestamp));
 561 } /* }}} int submit_cache_ratio */
 562
 563 /* Submits all the caches used by WAFL. Uses "submit_cache_ratio". */
 564 static int submit_wafl_data (const char *hostname, const char *instance, /* {{{ */
 565                 cfg_wafl_t *old_data, const cfg_wafl_t *new_data)
 566 {
 567         /* Submit requested counters */
 568         if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_NAME_CACHE | HAVE_WAFL_NAME_CACHE)
 569                         && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_NAME_CACHE))
 570                 submit_cache_ratio (hostname, instance, "name_cache_hit",
 571                                 new_data->name_cache_hit, new_data->name_cache_miss,
 572                                 old_data->name_cache_hit, old_data->name_cache_miss,
 573                                 new_data->timestamp);
 574
 575         if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_DIR_CACHE | HAVE_WAFL_FIND_DIR)
 576                         && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_FIND_DIR))
 577                 submit_cache_ratio (hostname, instance, "find_dir_hit",
 578                                 new_data->find_dir_hit, new_data->find_dir_miss,
 579                                 old_data->find_dir_hit, old_data->find_dir_miss,
 580                                 new_data->timestamp);
 581
 582         if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_BUF_CACHE | HAVE_WAFL_BUF_HASH)
 583                         && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_BUF_HASH))
 584                 submit_cache_ratio (hostname, instance, "buf_hash_hit",
 585                                 new_data->buf_hash_hit, new_data->buf_hash_miss,
 586                                 old_data->buf_hash_hit, old_data->buf_hash_miss,
 587                                 new_data->timestamp);
 588
 589         if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_INODE_CACHE | HAVE_WAFL_INODE_CACHE)
 590                         && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_INODE_CACHE))
 591                 submit_cache_ratio (hostname, instance, "inode_cache_hit",
 592                                 new_data->inode_cache_hit, new_data->inode_cache_miss,
 593                                 old_data->inode_cache_hit, old_data->inode_cache_miss,
 594                                 new_data->timestamp);
 595
 596         /* Clear old HAVE_* flags */
 597         old_data->flags &= ~HAVE_WAFL_ALL;
 598
 599         /* Copy all counters */
 600         old_data->timestamp        = new_data->timestamp;
 601         old_data->name_cache_hit   = new_data->name_cache_hit;
 602         old_data->name_cache_miss  = new_data->name_cache_miss;
 603         old_data->find_dir_hit     = new_data->find_dir_hit;
 604         old_data->find_dir_miss    = new_data->find_dir_miss;
 605         old_data->buf_hash_hit     = new_data->buf_hash_hit;
 606         old_data->buf_hash_miss    = new_data->buf_hash_miss;
 607         old_data->inode_cache_hit  = new_data->inode_cache_hit;
 608         old_data->inode_cache_miss = new_data->inode_cache_miss;
 609
 610         /* Copy HAVE_* flags */
 611         old_data->flags |= (new_data->flags & HAVE_WAFL_ALL);
 612
 613         return (0);
 614 } /* }}} int submit_wafl_data */
 615
 616 /* Submits volume performance data to the daemon, taking care to honor and
 617  * update flags appropriately. */
 618 static int submit_volume_perf_data (const host_config_t *host, /* {{{ */
 619                 volume_t *volume,
 620                 const data_volume_perf_t *new_data)
 621 {
 622         /* Check for and submit disk-octet values */
 623         if (HAS_ALL_FLAGS (volume->perf_data.flags, CFG_VOLUME_PERF_IO)
 624                         && HAS_ALL_FLAGS (new_data->flags, HAVE_VOLUME_PERF_BYTES_READ | HAVE_VOLUME_PERF_BYTES_WRITE))
 625         {
 626                 submit_two_counters (host->name, volume->name, "disk_octets", /* type instance = */ NULL,
 627                                 (counter_t) new_data->read_bytes, (counter_t) new_data->write_bytes, new_data->timestamp);
 628         }
 629
 630         /* Check for and submit disk-operations values */
 631         if (HAS_ALL_FLAGS (volume->perf_data.flags, CFG_VOLUME_PERF_OPS)
 632                         && HAS_ALL_FLAGS (new_data->flags, HAVE_VOLUME_PERF_OPS_READ | HAVE_VOLUME_PERF_OPS_WRITE))
 633         {
 634                 submit_two_counters (host->name, volume->name, "disk_ops", /* type instance = */ NULL,
 635                                 (counter_t) new_data->read_ops, (counter_t) new_data->write_ops, new_data->timestamp);
 636         }
 637
 638         /* Check for, calculate and submit disk-latency values */
 639         if (HAS_ALL_FLAGS (volume->perf_data.flags, CFG_VOLUME_PERF_LATENCY
 640                                 | HAVE_VOLUME_PERF_OPS_READ | HAVE_VOLUME_PERF_OPS_WRITE
 641                                 | HAVE_VOLUME_PERF_LATENCY_READ | HAVE_VOLUME_PERF_LATENCY_WRITE)
 642                         && HAS_ALL_FLAGS (new_data->flags, HAVE_VOLUME_PERF_OPS_READ | HAVE_VOLUME_PERF_OPS_WRITE
 643                                 | HAVE_VOLUME_PERF_LATENCY_READ | HAVE_VOLUME_PERF_LATENCY_WRITE))
 644         {
 645                 gauge_t latency_per_op_read;
 646                 gauge_t latency_per_op_write;
 647
 648                 latency_per_op_read = NAN;
 649                 latency_per_op_write = NAN;
 650
 651                 /* Check if a counter wrapped around. */
 652                 if ((new_data->read_ops > volume->perf_data.read_ops)
 653                                 && (new_data->read_latency > volume->perf_data.read_latency))
 654                 {
 655                         uint64_t diff_ops_read;
 656                         uint64_t diff_latency_read;
 657
 658                         diff_ops_read = new_data->read_ops - volume->perf_data.read_ops;
 659                         diff_latency_read = new_data->read_latency - volume->perf_data.read_latency;
 660
 661                         if (diff_ops_read > 0)
 662                                 latency_per_op_read = ((gauge_t) diff_latency_read) / ((gauge_t) diff_ops_read);
 663                 }
 664
 665                 if ((new_data->write_ops > volume->perf_data.write_ops)
 666                                 && (new_data->write_latency > volume->perf_data.write_latency))
 667                 {
 668                         uint64_t diff_ops_write;
 669                         uint64_t diff_latency_write;
 670
 671                         diff_ops_write = new_data->write_ops - volume->perf_data.write_ops;
 672                         diff_latency_write = new_data->write_latency - volume->perf_data.write_latency;
 673
 674                         if (diff_ops_write > 0)
 675                                 latency_per_op_write = ((gauge_t) diff_latency_write) / ((gauge_t) diff_ops_write);
 676                 }
 677
 678                 submit_two_gauge (host->name, volume->name, "disk_latency", /* type instance = */ NULL,
 679                                 latency_per_op_read, latency_per_op_write, new_data->timestamp);
 680         }
 681
 682         /* Clear all HAVE_* flags. */
 683         volume->perf_data.flags &= ~HAVE_VOLUME_PERF_ALL;
 684
 685         /* Copy all counters */
 686         volume->perf_data.timestamp = new_data->timestamp;
 687         volume->perf_data.read_bytes = new_data->read_bytes;
 688         volume->perf_data.write_bytes = new_data->write_bytes;
 689         volume->perf_data.read_ops = new_data->read_ops;
 690         volume->perf_data.write_ops = new_data->write_ops;
 691         volume->perf_data.read_latency = new_data->read_latency;
 692         volume->perf_data.write_latency = new_data->write_latency;
 693
 694         /* Copy the HAVE_* flags */
 695         volume->perf_data.flags |= (new_data->flags & HAVE_VOLUME_PERF_ALL);
 696
 697         return (0);
 698 } /* }}} int submit_volume_perf_data */
 699
 700 /*
 701  * Query functions
 702  *
 703  * These functions are called with appropriate data returned by the libnetapp
 704  * interface which is parsed and submitted with the above functions.
 705  */
 706 /* Data corresponding to <WAFL /> */
 707 static int cna_handle_wafl_data (const char *hostname, cfg_wafl_t *cfg_wafl, /* {{{ */
 708                 na_elem_t *data)
 709 {
 710         cfg_wafl_t perf_data;
 711         const char *plugin_inst;
 712
 713         na_elem_t *instances;
 714         na_elem_t *counter;
 715         na_elem_iter_t counter_iter;
 716
 717         memset (&perf_data, 0, sizeof (perf_data));
 718
 719         perf_data.timestamp = (time_t) na_child_get_uint64 (data, "timestamp", 0);
 720
 721         instances = na_elem_child(na_elem_child (data, "instances"), "instance-data");
 722         if (instances == NULL)
 723         {
 724                 ERROR ("netapp plugin: cna_handle_wafl_data: "
 725                                 "na_elem_child (\"instances\") failed.");
 726                 return (-1);
 727         }
 728
 729         plugin_inst = na_child_get_string(instances, "name");
 730         if (plugin_inst == NULL)
 731         {
 732                 ERROR ("netapp plugin: cna_handle_wafl_data: "
 733                                 "na_child_get_string (\"name\") failed.");
 734                 return (-1);
 735         }
 736
 737         /* Iterate over all counters */
 738         counter_iter = na_child_iterator (na_elem_child (instances, "counters"));
 739         for (counter = na_iterator_next (&counter_iter);
 740                         counter != NULL;
 741                         counter = na_iterator_next (&counter_iter))
 742         {
 743                 const char *name;
 744                 uint64_t value;
 745
 746                 name = na_child_get_string(counter, "name");
 747                 if (name == NULL)
 748                         continue;
 749
 750                 value = na_child_get_uint64(counter, "value", UINT64_MAX);
 751                 if (value == UINT64_MAX)
 752                         continue;
 753
 754                 if (!strcmp(name, "name_cache_hit")) {
 755                         perf_data.name_cache_hit = value;
 756                         perf_data.flags |= HAVE_WAFL_NAME_CACHE_HIT;
 757                 } else if (!strcmp(name, "name_cache_miss")) {
 758                         perf_data.name_cache_miss = value;
 759                         perf_data.flags |= HAVE_WAFL_NAME_CACHE_MISS;
 760                 } else if (!strcmp(name, "find_dir_hit")) {
 761                         perf_data.find_dir_hit = value;
 762                         perf_data.flags |= HAVE_WAFL_FIND_DIR_HIT;
 763                 } else if (!strcmp(name, "find_dir_miss")) {
 764                         perf_data.find_dir_miss = value;
 765                         perf_data.flags |= HAVE_WAFL_FIND_DIR_MISS;
 766                 } else if (!strcmp(name, "buf_hash_hit")) {
 767                         perf_data.buf_hash_hit = value;
 768                         perf_data.flags |= HAVE_WAFL_BUF_HASH_HIT;
 769                 } else if (!strcmp(name, "buf_hash_miss")) {
 770                         perf_data.buf_hash_miss = value;
 771                         perf_data.flags |= HAVE_WAFL_BUF_HASH_MISS;
 772                 } else if (!strcmp(name, "inode_cache_hit")) {
 773                         perf_data.inode_cache_hit = value;
 774                         perf_data.flags |= HAVE_WAFL_INODE_CACHE_HIT;
 775                 } else if (!strcmp(name, "inode_cache_miss")) {
 776                         perf_data.inode_cache_miss = value;
 777                         perf_data.flags |= HAVE_WAFL_INODE_CACHE_MISS;
 778                 } else {
 779                         DEBUG("netapp plugin: cna_handle_wafl_data: "
 780                                         "Found unexpected child: %s", name);
 781                 }
 782         }
 783
 784         return (submit_wafl_data (hostname, plugin_inst, cfg_wafl, &perf_data));
 785 } /* }}} void cna_handle_wafl_data */
 786
 787 static int cna_setup_wafl (cfg_wafl_t *cw) /* {{{ */
 788 {
 789         na_elem_t *e;
 790
 791         if (cw == NULL)
 792                 return (EINVAL);
 793
 794         if (cw->query != NULL)
 795                 return (0);
 796
 797         cw->query = na_elem_new("perf-object-get-instances");
 798         if (cw->query == NULL)
 799         {
 800                 ERROR ("netapp plugin: na_elem_new failed.");
 801                 return (-1);
 802         }
 803         na_child_add_string (cw->query, "objectname", "wafl");
 804
 805         e = na_elem_new("counters");
 806         if (e == NULL)
 807         {
 808                 na_elem_free (cw->query);
 809                 cw->query = NULL;
 810                 ERROR ("netapp plugin: na_elem_new failed.");
 811                 return (-1);
 812         }
 813         na_child_add_string(e, "foo", "name_cache_hit");
 814         na_child_add_string(e, "foo", "name_cache_miss");
 815         na_child_add_string(e, "foo", "find_dir_hit");
 816         na_child_add_string(e, "foo", "find_dir_miss");
 817         na_child_add_string(e, "foo", "buf_hash_hit");
 818         na_child_add_string(e, "foo", "buf_hash_miss");
 819         na_child_add_string(e, "foo", "inode_cache_hit");
 820         na_child_add_string(e, "foo", "inode_cache_miss");
 821
 822         na_child_add(cw->query, e);
 823
 824         return (0);
 825 } /* }}} int cna_setup_wafl */
 826
 827 static int cna_query_wafl (host_config_t *host) /* {{{ */
 828 {
 829         na_elem_t *data;
 830         int status;
 831         time_t now;
 832
 833         if (host == NULL)
 834                 return (EINVAL);
 835
 836         /* If WAFL was not configured, return without doing anything. */
 837         if (host->cfg_wafl == NULL)
 838                 return (0);
 839
 840         now = time (NULL);
 841         if ((host->cfg_wafl->interval.interval + host->cfg_wafl->interval.last_read) > now)
 842                 return (0);
 843
 844         status = cna_setup_wafl (host->cfg_wafl);
 845         if (status != 0)
 846                 return (status);
 847         assert (host->cfg_wafl->query != NULL);
 848
 849         data = na_server_invoke_elem(host->srv, host->cfg_wafl->query);
 850         if (na_results_status (data) != NA_OK)
 851         {
 852                 ERROR ("netapp plugin: cna_query_wafl: na_server_invoke_elem failed: %s",
 853                                 na_results_reason (data));
 854                 na_elem_free (data);
 855                 return (-1);
 856         }
 857
 858         status = cna_handle_wafl_data (host->name, host->cfg_wafl, data);
 859
 860         if (status == 0)
 861                 host->cfg_wafl->interval.last_read = now;
 862
 863         na_elem_free (data);
 864         return (status);
 865 } /* }}} int cna_query_wafl */
 866
 867 /* Data corresponding to <Disks /> */
 868 static int cna_handle_disk_data (const char *hostname, /* {{{ */
 869                 cfg_disk_t *cfg_disk, na_elem_t *data)
 870 {
 871         time_t timestamp;
 872         na_elem_t *instances;
 873         na_elem_t *instance;
 874         na_elem_iter_t instance_iter;
 875         disk_t *worst_disk = NULL;
 876
 877         if ((cfg_disk == NULL) || (data == NULL))
 878                 return (EINVAL);
 879
 880         timestamp = (time_t) na_child_get_uint64(data, "timestamp", 0);
 881
 882         instances = na_elem_child (data, "instances");
 883         if (instances == NULL)
 884         {
 885                 ERROR ("netapp plugin: cna_handle_disk_data: "
 886                                 "na_elem_child (\"instances\") failed.");
 887                 return (-1);
 888         }
 889
 890         /* Iterate over all children */
 891         instance_iter = na_child_iterator (instances);
 892         for (instance = na_iterator_next (&instance_iter);
 893                         instance != NULL;
 894                         instance = na_iterator_next(&instance_iter))
 895         {
 896                 disk_t *old_data;
 897                 disk_t  new_data;
 898
 899                 na_elem_iter_t counter_iterator;
 900                 na_elem_t *counter;
 901
 902                 memset (&new_data, 0, sizeof (new_data));
 903                 new_data.timestamp = timestamp;
 904                 new_data.disk_busy_percent = NAN;
 905
 906                 old_data = get_disk(cfg_disk, na_child_get_string (instance, "name"));
 907                 if (old_data == NULL)
 908                         continue;
 909
 910                 /* Look for the "disk_busy" and "base_for_disk_busy" counters */
 911                 counter_iterator = na_child_iterator(na_elem_child(instance, "counters"));
 912                 for (counter = na_iterator_next(&counter_iterator);
 913                                 counter != NULL;
 914                                 counter = na_iterator_next(&counter_iterator))
 915                 {
 916                         const char *name;
 917                         uint64_t value;
 918
 919                         name = na_child_get_string(counter, "name");
 920                         if (name == NULL)
 921                                 continue;
 922
 923                         value = na_child_get_uint64(counter, "value", UINT64_MAX);
 924                         if (value == UINT64_MAX)
 925                                 continue;
 926
 927                         if (strcmp(name, "disk_busy") == 0)
 928                         {
 929                                 new_data.disk_busy = value;
 930                                 new_data.flags |= HAVE_DISK_BUSY;
 931                         }
 932                         else if (strcmp(name, "base_for_disk_busy") == 0)
 933                         {
 934                                 new_data.base_for_disk_busy = value;
 935                                 new_data.flags |= HAVE_DISK_BASE;
 936                         }
 937                         else
 938                         {
 939                                 DEBUG ("netapp plugin: cna_handle_disk_data: "
 940                                                 "Counter not handled: %s = %"PRIu64,
 941                                                 name, value);
 942                         }
 943                 }
 944
 945                 /* If all required counters are available and did not just wrap around,
 946                  * calculate the busy percentage. Otherwise, the value is initialized to
 947                  * NAN at the top of the for-loop. */
 948                 if (HAS_ALL_FLAGS (old_data->flags, HAVE_DISK_BUSY | HAVE_DISK_BASE)
 949                                 && HAS_ALL_FLAGS (new_data.flags, HAVE_DISK_BUSY | HAVE_DISK_BASE)
 950                                 && (new_data.disk_busy >= old_data->disk_busy)
 951                                 && (new_data.base_for_disk_busy > old_data->base_for_disk_busy))
 952                 {
 953                         uint64_t busy_diff;
 954                         uint64_t base_diff;
 955
 956                         busy_diff = new_data.disk_busy - old_data->disk_busy;
 957                         base_diff = new_data.base_for_disk_busy - old_data->base_for_disk_busy;
 958
 959                         new_data.disk_busy_percent = 100.0
 960                                 * ((gauge_t) busy_diff) / ((gauge_t) base_diff);
 961                 }
 962
 963                 /* Clear HAVE_* flags */
 964                 old_data->flags &= ~HAVE_DISK_ALL;
 965
 966                 /* Copy data */
 967                 old_data->timestamp = new_data.timestamp;
 968                 old_data->disk_busy = new_data.disk_busy;
 969                 old_data->base_for_disk_busy = new_data.base_for_disk_busy;
 970                 old_data->disk_busy_percent = new_data.disk_busy_percent;
 971
 972                 /* Copy flags */
 973                 old_data->flags |= (new_data.flags & HAVE_DISK_ALL);
 974
 975                 if ((worst_disk == NULL)
 976                                 || (worst_disk->disk_busy_percent < old_data->disk_busy_percent))
 977                         worst_disk = old_data;
 978         } /* for (all disks) */
 979
 980         if ((cfg_disk->flags & CFG_DISK_BUSIEST) && (worst_disk != NULL))
 981                 submit_double (hostname, "system", "percent", "disk_busy",
 982                                 worst_disk->disk_busy_percent, timestamp);
 983
 984         return (0);
 985 } /* }}} int cna_handle_disk_data */
 986
 987 static int cna_setup_disk (cfg_disk_t *cd) /* {{{ */
 988 {
 989         na_elem_t *e;
 990
 991         if (cd == NULL)
 992                 return (EINVAL);
 993
 994         if (cd->query != NULL)
 995                 return (0);
 996
 997         cd->query = na_elem_new ("perf-object-get-instances");
 998         if (cd->query == NULL)
 999         {
1000                 ERROR ("netapp plugin: na_elem_new failed.");
1001                 return (-1);
1002         }
1003         na_child_add_string (cd->query, "objectname", "disk");
1004
1005         e = na_elem_new("counters");
1006         if (e == NULL)
1007         {
1008                 na_elem_free (cd->query);
1009                 cd->query = NULL;
1010                 ERROR ("netapp plugin: na_elem_new failed.");
1011                 return (-1);
1012         }
1013         na_child_add_string(e, "foo", "disk_busy");
1014         na_child_add_string(e, "foo", "base_for_disk_busy");
1015         na_child_add(cd->query, e);
1016
1017         return (0);
1018 } /* }}} int cna_setup_disk */
1019
1020 static int cna_query_disk (host_config_t *host) /* {{{ */
1021 {
1022         na_elem_t *data;
1023         int status;
1024         time_t now;
1025
1026         if (host == NULL)
1027                 return (EINVAL);
1028
1029         /* If the user did not configure disk statistics, return without doing
1030          * anything. */
1031         if (host->cfg_disk == NULL)
1032                 return (0);
1033
1034         now = time (NULL);
1035         if ((host->cfg_disk->interval.interval + host->cfg_disk->interval.last_read) > now)
1036                 return (0);
1037
1038         status = cna_setup_disk (host->cfg_disk);
1039         if (status != 0)
1040                 return (status);
1041         assert (host->cfg_disk->query != NULL);
1042
1043         data = na_server_invoke_elem(host->srv, host->cfg_disk->query);
1044         if (na_results_status (data) != NA_OK)
1045         {
1046                 ERROR ("netapp plugin: cna_query_disk: na_server_invoke_elem failed: %s",
1047                                 na_results_reason (data));
1048                 na_elem_free (data);
1049                 return (-1);
1050         }
1051
1052         status = cna_handle_disk_data (host->name, host->cfg_disk, data);
1053
1054         if (status == 0)
1055                 host->cfg_disk->interval.last_read = now;
1056
1057         na_elem_free (data);
1058         return (status);
1059 } /* }}} int cna_query_disk */
1060
1061 /* Data corresponding to <GetVolumeData /> */
1062 static void collect_volume_data(host_config_t *host, na_elem_t *out, void *data) { /* {{{ */
1063         na_elem_t *inst;
1064         volume_t *volume;
1065         cfg_volume_usage_t *cfg_volume_data = data;
1066
1067         out = na_elem_child(out, "volumes");
1068         na_elem_iter_t inst_iter = na_child_iterator(out);
1069         for (inst = na_iterator_next(&inst_iter); inst; inst = na_iterator_next(&inst_iter)) {
1070                 uint64_t size_free = 0, size_used = 0, snap_reserved = 0;
1071
1072                 na_elem_t *sis;
1073                 const char *sis_state;
1074                 uint64_t sis_saved_reported;
1075                 uint64_t sis_saved;
1076
1077                 volume = get_volume(host, na_child_get_string(inst, "name"),
1078                                 cfg_volume_data->flags, /* perf_flags = */ 0);
1079                 if (volume == NULL)
1080                         continue;
1081
1082                 if (!(volume->cfg_volume_usage.flags & CFG_VOLUME_USAGE_DF))
1083                         continue;
1084
1085                 /* 2^4 exa-bytes? This will take a while ;) */
1086                 size_free = na_child_get_uint64(inst, "size-available", UINT64_MAX);
1087                 if (size_free != UINT64_MAX)
1088                         submit_double (host->name, volume->name, "df_complex", "free",
1089                                         (double) size_free, /* time = */ 0);
1090
1091                 size_used = na_child_get_uint64(inst, "size-used", UINT64_MAX);
1092                 if (size_used != UINT64_MAX) {
1093                         if ((volume->cfg_volume_usage.flags & HAVE_VOLUME_USAGE_SNAP)
1094                                         && (size_used >= volume->cfg_volume_usage.snap_used))
1095                                 size_used -= volume->cfg_volume_usage.snap_used;
1096                         submit_double (host->name, volume->name, "df_complex", "used",
1097                                         (double) size_used, /* time = */ 0);
1098                 }
1099
1100                 snap_reserved = na_child_get_uint64(inst, "snapshot-blocks-reserved", UINT64_MAX);
1101                 if (!(volume->cfg_volume_usage.flags & HAVE_VOLUME_USAGE_SNAP) && (snap_reserved != UINT64_MAX))
1102                         /* If we have snap usage data this value has already been submitted. */
1103                         /* 1 block == 1024 bytes  as per API docs */
1104                         submit_double (host->name, volume->name, "df_complex", "snap_reserved",
1105                                         (double) (1024 * snap_reserved), /* time = */ 0);
1106
1107                 sis = na_elem_child(inst, "sis");
1108                 if (sis == NULL)
1109                         continue;
1110
1111                 sis_state = na_child_get_string(sis, "state");
1112                 if ((sis_state == NULL)
1113                                 || (strcmp ("enabled", sis_state) != 0))
1114                         continue;
1115
1116                 sis_saved_reported = na_child_get_uint64(sis, "size-saved", UINT64_MAX);
1117                 if (sis_saved_reported == UINT64_MAX)
1118                         continue;
1119
1120                 /* size-saved is actually a 32 bit number, so ... time for some guesswork. */
1121                 if ((sis_saved_reported >> 32) != 0) {
1122                         /* In case they ever fix this bug. */
1123                         sis_saved = sis_saved_reported;
1124                 } else {
1125                         uint64_t sis_saved_percent;
1126                         uint64_t sis_saved_guess;
1127                         uint64_t overflow_guess;
1128                         uint64_t guess1, guess2, guess3;
1129
1130                         sis_saved_percent = na_child_get_uint64(sis, "percentage-saved", UINT64_MAX);
1131                         if (sis_saved_percent > 100)
1132                                 continue;
1133
1134                         /* The "size-saved" value is a 32bit unsigned integer. This is a bug and
1135                          * will hopefully be fixed in later versions. To work around the bug, try
1136                          * to figure out how often the 32bit integer wrapped around by using the
1137                          * "percentage-saved" value. Because the percentage is in the range
1138                          * [0-100], this should work as long as the saved space does not exceed
1139                          * 400 GBytes. */
1140                         /* percentage-saved = size-saved / (size-saved + size-used) */
1141                         if (sis_saved_percent < 100)
1142                                 sis_saved_guess = size_used * sis_saved_percent / (100 - sis_saved_percent);
1143                         else
1144                                 sis_saved_guess = size_used;
1145
1146                         overflow_guess = sis_saved_guess >> 32;
1147                         guess1 = overflow_guess ? ((overflow_guess - 1) << 32) + sis_saved_reported : sis_saved_reported;
1148                         guess2 = (overflow_guess << 32) + sis_saved_reported;
1149                         guess3 = ((overflow_guess + 1) << 32) + sis_saved_reported;
1150
1151                         if (sis_saved_guess < guess2) {
1152                                 if ((sis_saved_guess - guess1) < (guess2 - sis_saved_guess))
1153                                         sis_saved = guess1;
1154                                 else
1155                                         sis_saved = guess2;
1156                         } else {
1157                                 if ((sis_saved_guess - guess2) < (guess3 - sis_saved_guess))
1158                                         sis_saved = guess2;
1159                                 else
1160                                         sis_saved = guess3;
1161                         }
1162                 } /* end of 32-bit workaround */
1163
1164                 submit_double (host->name, volume->name, "df_complex", "sis_saved",
1165                                 (double) sis_saved, /* time = */ 0);
1166         }
1167 } /* }}} void collect_volume_data */
1168
1169 /* Data corresponding to <GetVolumePerfData /> */
1170 static void query_volume_perf_data(host_config_t *host, na_elem_t *out, void *data) { /* {{{ */
1171         cfg_volume_perf_t *cfg_volume_perf = data;
1172         time_t timestamp;
1173         na_elem_t *counter, *inst;
1174
1175         timestamp = (time_t) na_child_get_uint64(out, "timestamp", 0);
1176
1177         out = na_elem_child(out, "instances");
1178         na_elem_iter_t inst_iter = na_child_iterator(out);
1179         for (inst = na_iterator_next(&inst_iter); inst; inst = na_iterator_next(&inst_iter)) {
1180                 data_volume_perf_t perf_data;
1181                 volume_t *volume;
1182
1183                 memset (&perf_data, 0, sizeof (perf_data));
1184                 perf_data.timestamp = timestamp;
1185
1186                 volume = get_volume(host, na_child_get_string(inst, "name"),
1187                                 /* data_flags = */ 0, cfg_volume_perf->flags);
1188                 if (volume == NULL)
1189                         continue;
1190
1191                 na_elem_iter_t count_iter = na_child_iterator(na_elem_child(inst, "counters"));
1192                 for (counter = na_iterator_next(&count_iter); counter; counter = na_iterator_next(&count_iter)) {
1193                         const char *name;
1194                         uint64_t value;
1195
1196                         name = na_child_get_string(counter, "name");
1197                         if (name == NULL)
1198                                 continue;
1199
1200                         value = na_child_get_uint64(counter, "value", UINT64_MAX);
1201                         if (value == UINT64_MAX)
1202                                 continue;
1203
1204                         if (!strcmp(name, "read_data")) {
1205                                 perf_data.read_bytes = value;
1206                                 perf_data.flags |= HAVE_VOLUME_PERF_BYTES_READ;
1207                         } else if (!strcmp(name, "write_data")) {
1208                                 perf_data.write_bytes = value;
1209                                 perf_data.flags |= HAVE_VOLUME_PERF_BYTES_WRITE;
1210                         } else if (!strcmp(name, "read_ops")) {
1211                                 perf_data.read_ops = value;
1212                                 perf_data.flags |= HAVE_VOLUME_PERF_OPS_READ;
1213                         } else if (!strcmp(name, "write_ops")) {
1214                                 perf_data.write_ops = value;
1215                                 perf_data.flags |= HAVE_VOLUME_PERF_OPS_WRITE;
1216                         } else if (!strcmp(name, "read_latency")) {
1217                                 perf_data.read_latency = value;
1218                                 perf_data.flags |= HAVE_VOLUME_PERF_LATENCY_READ;
1219                         } else if (!strcmp(name, "write_latency")) {
1220                                 perf_data.write_latency = value;
1221                                 perf_data.flags |= HAVE_VOLUME_PERF_LATENCY_WRITE;
1222                         }
1223                 }
1224
1225                 submit_volume_perf_data (host, volume, &perf_data);
1226         } /* for (volume) */
1227 } /* }}} void query_volume_perf_data */
1228
1229 /* Data corresponding to <System /> */
1230 static int cna_handle_system_data (const char *hostname, /* {{{ */
1231                 cfg_system_t *cfg_system, na_elem_t *data)
1232 {
1233         na_elem_t *instances;
1234         na_elem_t *counter;
1235         na_elem_iter_t counter_iter;
1236
1237         counter_t disk_read = 0, disk_written = 0;
1238         counter_t net_recv = 0, net_sent = 0;
1239         counter_t cpu_busy = 0, cpu_total = 0;
1240         uint32_t counter_flags = 0;
1241
1242         const char *instance;
1243         time_t timestamp;
1244
1245         timestamp = (time_t) na_child_get_uint64 (data, "timestamp", 0);
1246
1247         instances = na_elem_child(na_elem_child (data, "instances"), "instance-data");
1248         if (instances == NULL)
1249         {
1250                 ERROR ("netapp plugin: cna_handle_system_data: "
1251                                 "na_elem_child (\"instances\") failed.");
1252                 return (-1);
1253         }
1254
1255         instance = na_child_get_string (instances, "name");
1256         if (instance == NULL)
1257         {
1258                 ERROR ("netapp plugin: cna_handle_system_data: "
1259                                 "na_child_get_string (\"name\") failed.");
1260                 return (-1);
1261         }
1262
1263         counter_iter = na_child_iterator (na_elem_child (instances, "counters"));
1264         for (counter = na_iterator_next (&counter_iter);
1265                         counter != NULL;
1266                         counter = na_iterator_next (&counter_iter))
1267         {
1268                 const char *name;
1269                 uint64_t value;
1270
1271                 name = na_child_get_string(counter, "name");
1272                 if (name == NULL)
1273                         continue;
1274
1275                 value = na_child_get_uint64(counter, "value", UINT64_MAX);
1276                 if (value == UINT64_MAX)
1277                         continue;
1278
1279                 if (!strcmp(name, "disk_data_read")) {
1280                         disk_read = (counter_t) (value * 1024);
1281                         counter_flags |= 0x01;
1282                 } else if (!strcmp(name, "disk_data_written")) {
1283                         disk_written = (counter_t) (value * 1024);
1284                         counter_flags |= 0x02;
1285                 } else if (!strcmp(name, "net_data_recv")) {
1286                         net_recv = (counter_t) (value * 1024);
1287                         counter_flags |= 0x04;
1288                 } else if (!strcmp(name, "net_data_sent")) {
1289                         net_sent = (counter_t) (value * 1024);
1290                         counter_flags |= 0x08;
1291                 } else if (!strcmp(name, "cpu_busy")) {
1292                         cpu_busy = (counter_t) value;
1293                         counter_flags |= 0x10;
1294                 } else if (!strcmp(name, "cpu_elapsed_time")) {
1295                         cpu_total = (counter_t) value;
1296                         counter_flags |= 0x20;
1297                 } else if ((cfg_system->flags & CFG_SYSTEM_OPS)
1298                                 && (value > 0) && (strlen(name) > 4)
1299                                 && (!strcmp(name + strlen(name) - 4, "_ops"))) {
1300                         submit_counter (hostname, instance, "disk_ops_complex", name,
1301                                         (counter_t) value, timestamp);
1302                 }
1303         } /* for (counter) */
1304
1305         if ((cfg_system->flags & CFG_SYSTEM_DISK)
1306                         && (HAS_ALL_FLAGS (counter_flags, 0x01 | 0x02)))
1307                 submit_two_counters (hostname, instance, "disk_octets", NULL,
1308                                 disk_read, disk_written, timestamp);
1309
1310         if ((cfg_system->flags & CFG_SYSTEM_NET)
1311                         && (HAS_ALL_FLAGS (counter_flags, 0x04 | 0x08)))
1312                 submit_two_counters (hostname, instance, "if_octets", NULL,
1313                                 net_recv, net_sent, timestamp);
1314
1315         if ((cfg_system->flags & CFG_SYSTEM_CPU)
1316                         && (HAS_ALL_FLAGS (counter_flags, 0x10 | 0x20)))
1317         {
1318                 submit_counter (hostname, instance, "cpu", "system",
1319                                 cpu_busy, timestamp);
1320                 submit_counter (hostname, instance, "cpu", "idle",
1321                                 cpu_total - cpu_busy, timestamp);
1322         }
1323
1324         return (0);
1325 } /* }}} int cna_handle_system_data */
1326
1327 static int cna_setup_system (cfg_system_t *cs) /* {{{ */
1328 {
1329         if (cs == NULL)
1330                 return (EINVAL);
1331
1332         if (cs->query != NULL)
1333                 return (0);
1334
1335         cs->query = na_elem_new ("perf-object-get-instances");
1336         if (cs->query == NULL)
1337         {
1338                 ERROR ("netapp plugin: na_elem_new failed.");
1339                 return (-1);
1340         }
1341         na_child_add_string (cs->query, "objectname", "system");
1342
1343         return (0);
1344 } /* }}} int cna_setup_system */
1345
1346 static int cna_query_system (host_config_t *host) /* {{{ */
1347 {
1348         na_elem_t *data;
1349         int status;
1350         time_t now;
1351
1352         if (host == NULL)
1353                 return (EINVAL);
1354
1355         /* If system statistics were not configured, return without doing anything. */
1356         if (host->cfg_system == NULL)
1357                 return (0);
1358
1359         now = time (NULL);
1360         if ((host->cfg_system->interval.interval + host->cfg_system->interval.last_read) > now)
1361                 return (0);
1362
1363         status = cna_setup_system (host->cfg_system);
1364         if (status != 0)
1365                 return (status);
1366         assert (host->cfg_system->query != NULL);
1367
1368         data = na_server_invoke_elem(host->srv, host->cfg_system->query);
1369         if (na_results_status (data) != NA_OK)
1370         {
1371                 ERROR ("netapp plugin: cna_query_system: na_server_invoke_elem failed: %s",
1372                                 na_results_reason (data));
1373                 na_elem_free (data);
1374                 return (-1);
1375         }
1376
1377         status = cna_handle_system_data (host->name, host->cfg_system, data);
1378
1379         if (status == 0)
1380                 host->cfg_system->interval.last_read = now;
1381
1382         na_elem_free (data);
1383         return (status);
1384 } /* }}} int cna_query_system */
1385
1386 /*
1387  * Configuration handling
1388  */
1389 /* Sets a given flag if the boolean argument is true and unsets the flag if it
1390  * is false. On error, the flag-field is not changed. */
1391 static int cna_config_bool_to_flag (const oconfig_item_t *ci, /* {{{ */
1392                 uint32_t *flags, uint32_t flag)
1393 {
1394         if ((ci == NULL) || (flags == NULL))
1395                 return (EINVAL);
1396
1397         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
1398         {
1399                 WARNING ("netapp plugin: The %s option needs exactly one boolean argument.",
1400                                 ci->key);
1401                 return (-1);
1402         }
1403
1404         if (ci->values[0].value.boolean)
1405                 *flags |= flag;
1406         else
1407                 *flags &= ~flag;
1408
1409         return (0);
1410 } /* }}} int cna_config_bool_to_flag */
1411
1412 /* Handling of the "Multiplier" option which is allowed in every block. */
1413 static int cna_config_get_multiplier (const oconfig_item_t *ci, /* {{{ */
1414                 cfg_service_t *service)
1415 {
1416         int tmp;
1417
1418         if ((ci == NULL) || (service == NULL))
1419                 return (EINVAL);
1420
1421         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
1422         {
1423                 WARNING ("netapp plugin: The `Multiplier' option needs exactly one numeric argument.");
1424                 return (-1);
1425         }
1426
1427         tmp = (int) (ci->values[0].value.number + .5);
1428         if (tmp < 1)
1429         {
1430                 WARNING ("netapp plugin: The `Multiplier' option needs a positive integer argument.");
1431                 return (-1);
1432         }
1433
1434         service->multiplier = tmp;
1435         service->skip_countdown = tmp;
1436
1437         return (0);
1438 } /* }}} int cna_config_get_multiplier */
1439
1440 /* Handling of the "Interval" option which is allowed in every block. */
1441 static int cna_config_get_interval (const oconfig_item_t *ci, /* {{{ */
1442                 cna_interval_t *out_interval)
1443 {
1444         time_t tmp;
1445
1446         if ((ci == NULL) || (out_interval == NULL))
1447                 return (EINVAL);
1448
1449         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
1450         {
1451                 WARNING ("netapp plugin: The `Multiplier' option needs exactly one numeric argument.");
1452                 return (-1);
1453         }
1454
1455         tmp = (time_t) (ci->values[0].value.number + .5);
1456         if (tmp < 1)
1457         {
1458                 WARNING ("netapp plugin: The `Multiplier' option needs a positive integer argument.");
1459                 return (-1);
1460         }
1461
1462         out_interval->interval = tmp;
1463         out_interval->last_read = 0;
1464
1465         return (0);
1466 } /* }}} int cna_config_get_interval */
1467
1468 /* Handling of the "GetIO", "GetOps" and "GetLatency" options within a
1469  * <GetVolumePerfData /> block. */
1470 static void cna_config_volume_performance_option (host_config_t *host, /* {{{ */
1471                 cfg_volume_perf_t *perf_volume, const oconfig_item_t *item,
1472                 uint32_t flag)
1473 {
1474         int i;
1475
1476         for (i = 0; i < item->values_num; ++i) {
1477                 const char *name;
1478                 volume_t *v;
1479                 _Bool set = true;
1480
1481                 if (item->values[i].type != OCONFIG_TYPE_STRING) {
1482                         WARNING("netapp plugin: Ignoring non-string argument in "
1483                                         "\"GetVolumePerfData\" block for host %s", host->name);
1484                         continue;
1485                 }
1486
1487                 name = item->values[i].value.string;
1488                 if (name[0] == '+') {
1489                         set = true;
1490                         ++name;
1491                 } else if (name[0] == '-') {
1492                         set = false;
1493                         ++name;
1494                 }
1495
1496                 if (!name[0]) {
1497                         if (set)
1498                                 perf_volume->flags |= flag;
1499                         else /* if (!set) */
1500                                 perf_volume->flags &= ~flag;
1501
1502                         host_set_all_perf_data_flags(host, flag, set);
1503                         continue;
1504                 }
1505
1506                 v = get_volume (host, name, /* data_flags = */ 0, perf_volume->flags);
1507                 if (v == NULL)
1508                         continue;
1509
1510                 if (set)
1511                         v->perf_data.flags |= flag;
1512                 else /* if (!set) */
1513                         v->perf_data.flags &= ~flag;
1514         } /* for (i = 0 .. item->values_num) */
1515 } /* }}} void cna_config_volume_performance_option */
1516
1517 /* Corresponds to a <GetVolumePerfData /> block */
1518 static void cna_config_volume_performance(host_config_t *host, const oconfig_item_t *ci) { /* {{{ */
1519         int i, had_io = 0, had_ops = 0, had_latency = 0;
1520         cfg_service_t *service;
1521         cfg_volume_perf_t *perf_volume;
1522
1523         service = malloc(sizeof(*service));
1524         service->query = 0;
1525         service->handler = query_volume_perf_data;
1526         perf_volume = service->data = malloc(sizeof(*perf_volume));
1527         perf_volume->flags = CFG_VOLUME_PERF_INIT;
1528         service->next = host->services;
1529         host->services = service;
1530         for (i = 0; i < ci->children_num; ++i) {
1531                 oconfig_item_t *item = ci->children + i;
1532
1533                 /* if (!item || !item->key || !*item->key) continue; */
1534                 if (!strcasecmp(item->key, "Multiplier")) {
1535                         cna_config_get_multiplier (item, service);
1536                 } else if (!strcasecmp(item->key, "GetIO")) {
1537                         had_io = 1;
1538                         cna_config_volume_performance_option(host, perf_volume, item, CFG_VOLUME_PERF_IO);
1539                 } else if (!strcasecmp(item->key, "GetOps")) {
1540                         had_ops = 1;
1541                         cna_config_volume_performance_option(host, perf_volume, item, CFG_VOLUME_PERF_OPS);
1542                 } else if (!strcasecmp(item->key, "GetLatency")) {
1543                         had_latency = 1;
1544                         cna_config_volume_performance_option(host, perf_volume, item, CFG_VOLUME_PERF_LATENCY);
1545                 }
1546         }
1547         if (!had_io) {
1548                 perf_volume->flags |= CFG_VOLUME_PERF_IO;
1549                 host_set_all_perf_data_flags(host, CFG_VOLUME_PERF_IO, /* set = */ true);
1550         }
1551         if (!had_ops) {
1552                 perf_volume->flags |= CFG_VOLUME_PERF_OPS;
1553                 host_set_all_perf_data_flags(host, CFG_VOLUME_PERF_OPS, /* set = */ true);
1554         }
1555         if (!had_latency) {
1556                 perf_volume->flags |= CFG_VOLUME_PERF_LATENCY;
1557                 host_set_all_perf_data_flags(host, CFG_VOLUME_PERF_LATENCY, /* set = */ true);
1558         }
1559 } /* }}} void cna_config_volume_performance */
1560
1561 /* Handling of the "GetDiskUtil" option within a <GetVolumeData /> block. */
1562 static void cna_config_volume_usage_option (host_config_t *host, /* {{{ */
1563                 cfg_volume_usage_t *cfg_volume_data, const oconfig_item_t *item, uint32_t flag)
1564 {
1565         int i;
1566
1567         for (i = 0; i < item->values_num; ++i) {
1568                 const char *name;
1569                 volume_t *v;
1570                 _Bool set = true;
1571
1572                 if (item->values[i].type != OCONFIG_TYPE_STRING) {
1573                         WARNING("netapp plugin: Ignoring non-string argument in \"GetVolData\""
1574                                         "block for host %s", host->name);
1575                         continue;
1576                 }
1577
1578                 name = item->values[i].value.string;
1579                 if (name[0] == '+') {
1580                         set = true;
1581                         ++name;
1582                 } else if (name[0] == '-') {
1583                         set = false;
1584                         ++name;
1585                 }
1586
1587                 if (!name[0]) {
1588                         if (set)
1589                                 cfg_volume_data->flags |= flag;
1590                         else /* if (!set) */
1591                                 cfg_volume_data->flags &= ~flag;
1592
1593                         host_set_all_cfg_volume_usage_flags(host, flag, set);
1594                         continue;
1595                 }
1596
1597                 v = get_volume(host, name, cfg_volume_data->flags, /* perf_flags = */ 0);
1598                 if (v == NULL)
1599                         continue;
1600
1601                 if (!v->cfg_volume_usage.flags)
1602                         v->cfg_volume_usage.flags = cfg_volume_data->flags;
1603
1604                 if (set)
1605                         v->cfg_volume_usage.flags |= flag;
1606                 else /* if (!set) */
1607                         v->cfg_volume_usage.flags &= ~flag;
1608         }
1609 } /* }}} void cna_config_volume_usage_option */
1610
1611 /* Corresponds to a <GetVolumeData /> block */
1612 static void cna_config_volume_usage(host_config_t *host, oconfig_item_t *ci) { /* {{{ */
1613         int i, had_df = 0;
1614         cfg_service_t *service;
1615         cfg_volume_usage_t *cfg_volume_data;
1616
1617         service = malloc(sizeof(*service));
1618         service->query = 0;
1619         service->handler = collect_volume_data;
1620         cfg_volume_data = service->data = malloc(sizeof(*cfg_volume_data));
1621         cfg_volume_data->flags = CFG_VOLUME_USAGE_INIT;
1622         service->next = host->services;
1623         host->services = service;
1624         for (i = 0; i < ci->children_num; ++i) {
1625                 oconfig_item_t *item = ci->children + i;
1626
1627                 /* if (!item || !item->key || !*item->key) continue; */
1628                 if (!strcasecmp(item->key, "Multiplier")) {
1629                         cna_config_get_multiplier (item, service);
1630                 } else if (!strcasecmp(item->key, "GetDiskUtil")) {
1631                         had_df = 1;
1632                         cna_config_volume_usage_option(host, cfg_volume_data, item, CFG_VOLUME_USAGE_DF);
1633                 } else if (!strcasecmp(item->key, "GetSnapUtil")) {
1634                         had_df = 1;
1635                         cna_config_volume_usage_option(host, cfg_volume_data, item, CFG_VOLUME_USAGE_SNAP);
1636                 }
1637         }
1638         if (!had_df) {
1639                 cfg_volume_data->flags |= CFG_VOLUME_USAGE_DF;
1640                 host_set_all_cfg_volume_usage_flags(host, CFG_VOLUME_USAGE_DF, /* set = */ true);
1641         }
1642         if (cfg_volume_data->flags & CFG_VOLUME_USAGE_SNAP) {
1643                 WARNING("netapp plugin: The \"GetSnapUtil\" option does not support the \"+\" wildcard.");
1644         }
1645 } /* }}} void cna_config_volume_usage */
1646
1647 /* Corresponds to a <Disks /> block */
1648 static int cna_config_disk(host_config_t *host, oconfig_item_t *ci) { /* {{{ */
1649         cfg_disk_t *cfg_disk;
1650         int i;
1651
1652         if ((host == NULL) || (ci == NULL))
1653                 return (EINVAL);
1654
1655         if (host->cfg_disk == NULL)
1656         {
1657                 cfg_disk = malloc (sizeof (*cfg_disk));
1658                 if (cfg_disk == NULL)
1659                         return (ENOMEM);
1660                 memset (cfg_disk, 0, sizeof (*cfg_disk));
1661
1662                 /* Set default flags */
1663                 cfg_disk->flags = CFG_DISK_ALL;
1664                 cfg_disk->query = NULL;
1665                 cfg_disk->disks = NULL;
1666
1667                 host->cfg_disk = cfg_disk;
1668         }
1669         cfg_disk = host->cfg_disk;
1670
1671         for (i = 0; i < ci->children_num; ++i) {
1672                 oconfig_item_t *item = ci->children + i;
1673
1674                 /* if (!item || !item->key || !*item->key) continue; */
1675                 if (strcasecmp(item->key, "Interval") == 0)
1676                         cna_config_get_interval (item, &cfg_disk->interval);
1677                 else if (strcasecmp(item->key, "GetBusy") == 0)
1678                         cna_config_bool_to_flag (item, &cfg_disk->flags, CFG_DISK_BUSIEST);
1679         }
1680
1681         if ((cfg_disk->flags & CFG_DISK_ALL) == 0)
1682         {
1683                 NOTICE ("netapp plugin: All disk related values have been disabled. "
1684                                 "Collection of per-disk data will be disabled entirely.");
1685                 free_cfg_disk (host->cfg_disk);
1686                 host->cfg_disk = NULL;
1687         }
1688
1689         return (0);
1690 } /* }}} int cna_config_disk */
1691
1692 /* Corresponds to a <WAFL /> block */
1693 static int cna_config_wafl(host_config_t *host, oconfig_item_t *ci) /* {{{ */
1694 {
1695         cfg_wafl_t *cfg_wafl;
1696         int i;
1697
1698         if ((host == NULL) || (ci == NULL))
1699                 return (EINVAL);
1700
1701         if (host->cfg_wafl == NULL)
1702         {
1703                 cfg_wafl = malloc (sizeof (*cfg_wafl));
1704                 if (cfg_wafl == NULL)
1705                         return (ENOMEM);
1706                 memset (cfg_wafl, 0, sizeof (*cfg_wafl));
1707
1708                 /* Set default flags */
1709                 cfg_wafl->flags = CFG_WAFL_ALL;
1710
1711                 host->cfg_wafl = cfg_wafl;
1712         }
1713         cfg_wafl = host->cfg_wafl;
1714
1715         for (i = 0; i < ci->children_num; ++i) {
1716                 oconfig_item_t *item = ci->children + i;
1717
1718                 if (strcasecmp(item->key, "Interval") == 0)
1719                         cna_config_get_interval (item, &cfg_wafl->interval);
1720                 else if (!strcasecmp(item->key, "GetNameCache"))
1721                         cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_NAME_CACHE);
1722                 else if (!strcasecmp(item->key, "GetDirCache"))
1723                         cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_DIR_CACHE);
1724                 else if (!strcasecmp(item->key, "GetBufferCache"))
1725                         cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_BUF_CACHE);
1726                 else if (!strcasecmp(item->key, "GetInodeCache"))
1727                         cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_INODE_CACHE);
1728                 else
1729                         WARNING ("netapp plugin: The %s config option is not allowed within "
1730                                         "`WAFL' blocks.", item->key);
1731         }
1732
1733         if ((cfg_wafl->flags & CFG_WAFL_ALL) == 0)
1734         {
1735                 NOTICE ("netapp plugin: All WAFL related values have been disabled. "
1736                                 "Collection of WAFL data will be disabled entirely.");
1737                 free_cfg_wafl (host->cfg_wafl);
1738                 host->cfg_wafl = NULL;
1739         }
1740
1741         return (0);
1742 } /* }}} int cna_config_wafl */
1743
1744 /* Corresponds to a <System /> block */
1745 static int cna_config_system (host_config_t *host, /* {{{ */
1746                 oconfig_item_t *ci, const cfg_service_t *default_service)
1747 {
1748         cfg_system_t *cfg_system;
1749         int i;
1750
1751         if ((host == NULL) || (ci == NULL))
1752                 return (EINVAL);
1753
1754         if (host->cfg_system == NULL)
1755         {
1756                 cfg_system = malloc (sizeof (*cfg_system));
1757                 if (cfg_system == NULL)
1758                         return (ENOMEM);
1759                 memset (cfg_system, 0, sizeof (*cfg_system));
1760
1761                 /* Set default flags */
1762                 cfg_system->flags = CFG_SYSTEM_ALL;
1763                 cfg_system->query = NULL;
1764
1765                 host->cfg_system = cfg_system;
1766         }
1767         cfg_system = host->cfg_system;
1768
1769         for (i = 0; i < ci->children_num; ++i) {
1770                 oconfig_item_t *item = ci->children + i;
1771
1772                 if (strcasecmp(item->key, "Interval") == 0) {
1773                         cna_config_get_interval (item, &cfg_system->interval);
1774                 } else if (!strcasecmp(item->key, "GetCPULoad")) {
1775                         cna_config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_CPU);
1776                 } else if (!strcasecmp(item->key, "GetInterfaces")) {
1777                         cna_config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_NET);
1778                 } else if (!strcasecmp(item->key, "GetDiskOps")) {
1779                         cna_config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_OPS);
1780                 } else if (!strcasecmp(item->key, "GetDiskIO")) {
1781                         cna_config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_DISK);
1782                 } else {
1783                         WARNING ("netapp plugin: The %s config option is not allowed within "
1784                                         "`System' blocks.", item->key);
1785                 }
1786         }
1787
1788         if ((cfg_system->flags & CFG_SYSTEM_ALL) == 0)
1789         {
1790                 NOTICE ("netapp plugin: All system related values have been disabled. "
1791                                 "Collection of system data will be disabled entirely.");
1792                 free_cfg_system (host->cfg_system);
1793                 host->cfg_system = NULL;
1794         }
1795
1796         return (0);
1797 } /* }}} int cna_config_system */
1798
1799 /* Corresponds to a <Host /> block. */
1800 static host_config_t *cna_config_host (const oconfig_item_t *ci, /* {{{ */
1801                 const host_config_t *default_host, const cfg_service_t *def_def_service)
1802 {
1803         oconfig_item_t *item;
1804         host_config_t *host;
1805         cfg_service_t default_service = *def_def_service;
1806         int status;
1807         int i;
1808
1809         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
1810                 WARNING("netapp plugin: \"Host\" needs exactly one string argument. Ignoring host block.");
1811                 return 0;
1812         }
1813
1814         host = malloc(sizeof(*host));
1815         memcpy (host, default_host, sizeof (*host));
1816
1817         status = cf_util_get_string (ci, &host->name);
1818         if (status != 0)
1819         {
1820                 sfree (host);
1821                 return (NULL);
1822         }
1823
1824         for (i = 0; i < ci->children_num; ++i) {
1825                 item = ci->children + i;
1826
1827                 status = 0;
1828
1829                 if (!strcasecmp(item->key, "Address")) {
1830                         status = cf_util_get_string (item, &host->host);
1831                 } else if (!strcasecmp(item->key, "Port")) {
1832                         int tmp;
1833
1834                         tmp = cf_util_get_port_number (item);
1835                         if (tmp > 0)
1836                                 host->port = tmp;
1837                 } else if (!strcasecmp(item->key, "Protocol")) {
1838                         if ((item->values_num != 1) || (item->values[0].type != OCONFIG_TYPE_STRING) || (strcasecmp(item->values[0].value.string, "http") && strcasecmp(item->values[0].value.string, "https"))) {
1839                                 WARNING("netapp plugin: \"Protocol\" needs to be either \"http\" or \"https\". Ignoring host block \"%s\".", ci->values[0].value.string);
1840                                 return 0;
1841                         }
1842                         if (!strcasecmp(item->values[0].value.string, "http")) host->protocol = NA_SERVER_TRANSPORT_HTTP;
1843                         else host->protocol = NA_SERVER_TRANSPORT_HTTPS;
1844                 } else if (!strcasecmp(item->key, "User")) {
1845                         status = cf_util_get_string (item, &host->username);
1846                 } else if (!strcasecmp(item->key, "Password")) {
1847                         status = cf_util_get_string (item, &host->password);
1848                 } else if (!strcasecmp(item->key, "Interval")) {
1849                         if (item->values_num != 1 || item->values[0].type != OCONFIG_TYPE_NUMBER || item->values[0].value.number != (int) item->values[0].value.number || item->values[0].value.number < 2) {
1850                                 WARNING("netapp plugin: \"Interval\" of host %s needs exactly one integer argument.", ci->values[0].value.string);
1851                                 continue;
1852                         }
1853                         host->interval = item->values[0].value.number;
1854                 } else if (!strcasecmp(item->key, "GetVolumePerfData")) {
1855                         cna_config_volume_performance(host, item);
1856                 } else if (!strcasecmp(item->key, "System")) {
1857                         cna_config_system(host, item, &default_service);
1858                 } else if (!strcasecmp(item->key, "WAFL")) {
1859                         cna_config_wafl(host, item);
1860                 } else if (!strcasecmp(item->key, "Disks")) {
1861                         cna_config_disk(host, item);
1862                 } else if (!strcasecmp(item->key, "GetVolumeData")) {
1863                         cna_config_volume_usage(host, item);
1864                 } else {
1865                         WARNING("netapp plugin: Ignoring unknown config option \"%s\" in host block \"%s\".",
1866                                         item->key, ci->values[0].value.string);
1867                 }
1868
1869                 if (status != 0)
1870                         break;
1871         }
1872
1873         if (host->host == NULL)
1874                 host->host = strdup (host->name);
1875
1876         if (host->host == NULL)
1877                 status = -1;
1878
1879         if (host->port <= 0)
1880                 host->port = (host->protocol == NA_SERVER_TRANSPORT_HTTP) ? 80 : 443;
1881
1882         if ((host->username == NULL) || (host->password == NULL)) {
1883                 WARNING("netapp plugin: Please supply login information for host \"%s\". "
1884                                 "Ignoring host block.", host->name);
1885                 status = -1;
1886         }
1887
1888         if (status != 0)
1889         {
1890                 free_host_config (host);
1891                 return (NULL);
1892         }
1893
1894         return host;
1895 } /* }}} host_config_t *cna_config_host */
1896
1897 /*
1898  * Callbacks registered with the daemon
1899  *
1900  * Pretty standard stuff here.
1901  */
1902 static int cna_init(void) { /* {{{ */
1903         char err[256];
1904         na_elem_t *e;
1905         host_config_t *host;
1906         cfg_service_t *service;
1907
1908         if (!global_host_config) {
1909                 WARNING("netapp plugin: Plugin loaded but no hosts defined.");
1910                 return 1;
1911         }
1912
1913         memset (err, 0, sizeof (err));
1914         if (!na_startup(err, sizeof(err))) {
1915                 err[sizeof (err) - 1] = 0;
1916                 ERROR("netapp plugin: Error initializing netapp API: %s", err);
1917                 return 1;
1918         }
1919
1920         for (host = global_host_config; host; host = host->next) {
1921                 /* Request version 1.1 of the ONTAP API */
1922                 host->srv = na_server_open(host->host,
1923                                 /* major version = */ 1, /* minor version = */ 1);
1924                 if (host->srv == NULL) {
1925                         ERROR ("netapp plugin: na_server_open (%s) failed.", host->host);
1926                         continue;
1927                 }
1928
1929                 if (host->interval < interval_g)
1930                         host->interval = interval_g;
1931
1932                 na_server_set_transport_type(host->srv, host->protocol,
1933                                 /* transportarg = */ NULL);
1934                 na_server_set_port(host->srv, host->port);
1935                 na_server_style(host->srv, NA_STYLE_LOGIN_PASSWORD);
1936                 na_server_adminuser(host->srv, host->username, host->password);
1937                 na_server_set_timeout(host->srv, 5 /* seconds */);
1938
1939                 for (service = host->services; service; service = service->next) {
1940                         service->interval = host->interval * service->multiplier;
1941
1942                         if (service->handler == query_volume_perf_data) {
1943                                 service->query = na_elem_new("perf-object-get-instances");
1944                                 na_child_add_string(service->query, "objectname", "volume");
1945                                 e = na_elem_new("counters");
1946                                 /* "foo" means: This string has to be here but
1947                                    the content doesn't matter. */
1948                                 na_child_add_string(e, "foo", "read_ops");
1949                                 na_child_add_string(e, "foo", "write_ops");
1950                                 na_child_add_string(e, "foo", "read_data");
1951                                 na_child_add_string(e, "foo", "write_data");
1952                                 na_child_add_string(e, "foo", "read_latency");
1953                                 na_child_add_string(e, "foo", "write_latency");
1954                                 na_child_add(service->query, e);
1955                         } else if (service->handler == collect_volume_data) {
1956                                 service->query = na_elem_new("volume-list-info");
1957                                 /* na_child_add_string(service->query, "objectname", "volume"); */
1958                                 /* } else if (service->handler == collect_snapshot_data) { */
1959                                 /* service->query = na_elem_new("snapshot-list-info"); */
1960                         }
1961                 } /* for (host->services) */
1962         }
1963         return 0;
1964 } /* }}} int cna_init */
1965
1966 static int cna_config (oconfig_item_t *ci) { /* {{{ */
1967         int i;
1968         oconfig_item_t *item;
1969         host_config_t default_host = HOST_INIT;
1970         cfg_service_t default_service = SERVICE_INIT;
1971
1972         for (i = 0; i < ci->children_num; ++i) {
1973                 item = ci->children + i;
1974
1975                 if (!strcasecmp(item->key, "Host")) {
1976                         host_config_t *host;
1977                         host_config_t *tmp;
1978
1979                         host = cna_config_host(item, &default_host, &default_service);
1980                         if (host == NULL)
1981                                 continue;
1982
1983                         for (tmp = global_host_config; tmp != NULL; tmp = tmp->next)
1984                         {
1985                                 if (strcasecmp (host->name, tmp->name) == 0)
1986                                         WARNING ("netapp plugin: Duplicate definition of host `%s'. "
1987                                                         "This is probably a bad idea.",
1988                                                         host->name);
1989
1990                                 if (tmp->next == NULL)
1991                                         break;
1992                         }
1993
1994                         host->next = NULL;
1995                         if (tmp == NULL)
1996                                 global_host_config = host;
1997                         else
1998                                 tmp->next = host;
1999                 } else {
2000                         WARNING("netapp plugin: Ignoring unknown config option \"%s\".", item->key);
2001                 }
2002         }
2003         return 0;
2004 } /* }}} int cna_config */
2005
2006 static int cna_read(void) { /* {{{ */
2007         na_elem_t *out;
2008         host_config_t *host;
2009         cfg_service_t *service;
2010
2011         for (host = global_host_config; host; host = host->next) {
2012                 for (service = host->services; service; service = service->next) {
2013                         if (--service->skip_countdown > 0) continue;
2014                         service->skip_countdown = service->multiplier;
2015                         out = na_server_invoke_elem(host->srv, service->query);
2016                         if (na_results_status(out) != NA_OK) {
2017                                 int netapp_errno = na_results_errno(out);
2018                                 ERROR("netapp plugin: Error %d from host %s: %s", netapp_errno, host->name, na_results_reason(out));
2019                                 na_elem_free(out);
2020                                 if (netapp_errno == EIO || netapp_errno == ETIMEDOUT) {
2021                                         /* Network problems. Just give up on all other services on this host. */
2022                                         break;
2023                                 }
2024                                 continue;
2025                         }
2026                         service->handler(host, out, service->data);
2027                         na_elem_free(out);
2028                 } /* for (host->services) */
2029
2030                 cna_query_wafl (host);
2031                 cna_query_disk (host);
2032                 cna_query_system (host);
2033         }
2034         return 0;
2035 } /* }}} int cna_read */
2036
2037 void module_register(void) {
2038         plugin_register_complex_config("netapp", cna_config);
2039         plugin_register_init("netapp", cna_init);
2040         plugin_register_read("netapp", cna_read);
2041 }
2042
2043 /* vim: set sw=2 ts=2 noet fdm=marker : */