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