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 #include "utils_ignorelist.h"
  30
  31 #include <netapp_api.h>
  32 #include <netapp_errno.h>
  33
  34 #define HAS_ALL_FLAGS(has,needs) (((has) & (needs)) == (needs))
  35
  36 typedef struct host_config_s host_config_t;
  37 typedef void service_handler_t(host_config_t *host, na_elem_t *result, void *data);
  38
  39 struct cna_interval_s
  40 {
  41         time_t interval;
  42         time_t last_read;
  43 };
  44 typedef struct cna_interval_s cna_interval_t;
  45
  46 /*! Data types for WAFL statistics {{{
  47  *
  48  * \brief Persistent data for WAFL performance counters. (a.k.a. cache performance)
  49  *
  50  * The cache counters use old counter values to calculate a hit ratio for each
  51  * counter. The "cfg_wafl_t" struct therefore contains old counter values along
  52  * with flags, which are set if the counter is valid.
  53  *
  54  * The function "cna_handle_wafl_data" will fill a new structure of this kind
  55  * with new values, then pass both, new and old data, to "submit_wafl_data".
  56  * That function calculates the hit ratios, submits the calculated values and
  57  * updates the old counter values for the next iteration.
  58  */
  59 #define CFG_WAFL_NAME_CACHE        0x0001
  60 #define CFG_WAFL_DIR_CACHE         0x0002
  61 #define CFG_WAFL_BUF_CACHE         0x0004
  62 #define CFG_WAFL_INODE_CACHE       0x0008
  63 #define CFG_WAFL_ALL               0x000F
  64 #define HAVE_WAFL_NAME_CACHE_HIT   0x0100
  65 #define HAVE_WAFL_NAME_CACHE_MISS  0x0200
  66 #define HAVE_WAFL_NAME_CACHE       (HAVE_WAFL_NAME_CACHE_HIT | HAVE_WAFL_NAME_CACHE_MISS)
  67 #define HAVE_WAFL_FIND_DIR_HIT     0x0400
  68 #define HAVE_WAFL_FIND_DIR_MISS    0x0800
  69 #define HAVE_WAFL_FIND_DIR         (HAVE_WAFL_FIND_DIR_HIT | HAVE_WAFL_FIND_DIR_MISS)
  70 #define HAVE_WAFL_BUF_HASH_HIT     0x1000
  71 #define HAVE_WAFL_BUF_HASH_MISS    0x2000
  72 #define HAVE_WAFL_BUF_HASH         (HAVE_WAFL_BUF_HASH_HIT | HAVE_WAFL_BUF_HASH_MISS)
  73 #define HAVE_WAFL_INODE_CACHE_HIT  0x4000
  74 #define HAVE_WAFL_INODE_CACHE_MISS 0x8000
  75 #define HAVE_WAFL_INODE_CACHE      (HAVE_WAFL_INODE_CACHE_HIT | HAVE_WAFL_INODE_CACHE_MISS)
  76 #define HAVE_WAFL_ALL              0xff00
  77 typedef struct {
  78         uint32_t flags;
  79         cna_interval_t interval;
  80         na_elem_t *query;
  81
  82         time_t timestamp;
  83         uint64_t name_cache_hit;
  84         uint64_t name_cache_miss;
  85         uint64_t find_dir_hit;
  86         uint64_t find_dir_miss;
  87         uint64_t buf_hash_hit;
  88         uint64_t buf_hash_miss;
  89         uint64_t inode_cache_hit;
  90         uint64_t inode_cache_miss;
  91 } cfg_wafl_t;
  92 /* }}} cfg_wafl_t */
  93
  94 /*! Data types for disk statistics {{{
  95  *
  96  * \brief A disk in the NetApp.
  97  *
  98  * A disk doesn't have any more information than its name at the moment.
  99  * The name includes the "disk_" prefix.
 100  */
 101 #define HAVE_DISK_BUSY   0x10
 102 #define HAVE_DISK_BASE   0x20
 103 #define HAVE_DISK_ALL    0x30
 104 typedef struct disk_s {
 105         char *name;
 106         uint32_t flags;
 107         time_t timestamp;
 108         uint64_t disk_busy;
 109         uint64_t base_for_disk_busy;
 110         double disk_busy_percent;
 111         struct disk_s *next;
 112 } disk_t;
 113
 114 #define CFG_DISK_BUSIEST 0x01
 115 #define CFG_DISK_ALL     0x01
 116 typedef struct {
 117         uint32_t flags;
 118         cna_interval_t interval;
 119         na_elem_t *query;
 120         disk_t *disks;
 121 } cfg_disk_t;
 122 /* }}} cfg_disk_t */
 123
 124 /*! Data types for volume performance statistics {{{
 125  *
 126  * \brief Persistent data for volume performance data.
 127  *
 128  * The code below uses the difference of the operations and latency counters to
 129  * calculate an average per-operation latency. For this, old counters need to
 130  * be stored in the "data_volume_perf_t" structure. The byte-counters are just
 131  * kept for completeness sake. The "flags" member indicates if each counter is
 132  * valid or not.
 133  *
 134  * The "cna_handle_volume_perf_data" function will fill a new struct of this
 135  * type and pass both, old and new data, to "submit_volume_perf_data". In that
 136  * function, the per-operation latency is calculated and dispatched, then the
 137  * old counters are updated.
 138  */
 139 #define CFG_VOLUME_PERF_INIT           0x0001
 140 #define CFG_VOLUME_PERF_IO             0x0002
 141 #define CFG_VOLUME_PERF_OPS            0x0003
 142 #define CFG_VOLUME_PERF_LATENCY        0x0008
 143 #define CFG_VOLUME_PERF_ALL            0x000F
 144 #define HAVE_VOLUME_PERF_BYTES_READ    0x0010
 145 #define HAVE_VOLUME_PERF_BYTES_WRITE   0x0020
 146 #define HAVE_VOLUME_PERF_OPS_READ      0x0040
 147 #define HAVE_VOLUME_PERF_OPS_WRITE     0x0080
 148 #define HAVE_VOLUME_PERF_LATENCY_READ  0x0100
 149 #define HAVE_VOLUME_PERF_LATENCY_WRITE 0x0200
 150 #define HAVE_VOLUME_PERF_ALL           0x03F0
 151 struct data_volume_perf_s;
 152 typedef struct data_volume_perf_s data_volume_perf_t;
 153 struct data_volume_perf_s {
 154         char *name;
 155         uint32_t flags;
 156         time_t timestamp;
 157
 158         uint64_t read_bytes;
 159         uint64_t write_bytes;
 160         uint64_t read_ops;
 161         uint64_t write_ops;
 162         uint64_t read_latency;
 163         uint64_t write_latency;
 164
 165         data_volume_perf_t *next;
 166 };
 167
 168 typedef struct {
 169         cna_interval_t interval;
 170         na_elem_t *query;
 171
 172         ignorelist_t *il_octets;
 173         ignorelist_t *il_operations;
 174         ignorelist_t *il_latency;
 175
 176         data_volume_perf_t *volumes;
 177 } cfg_volume_perf_t;
 178 /* }}} data_volume_perf_t */
 179
 180 /*! Data types for volume usage statistics {{{
 181  *
 182  * \brief Configuration struct for volume usage data (free / used).
 183  */
 184 #define CFG_VOLUME_USAGE_DF             0x0002
 185 #define CFG_VOLUME_USAGE_SNAP           0x0004
 186 #define CFG_VOLUME_USAGE_ALL            0x0006
 187 #define HAVE_VOLUME_USAGE_NORM_FREE     0x0010
 188 #define HAVE_VOLUME_USAGE_NORM_USED     0x0020
 189 #define HAVE_VOLUME_USAGE_SNAP_RSVD     0x0040
 190 #define HAVE_VOLUME_USAGE_SNAP_USED     0x0080
 191 #define HAVE_VOLUME_USAGE_SIS_SAVED     0x0100
 192 #define HAVE_VOLUME_USAGE_ALL           0x01f0
 193 #define IS_VOLUME_USAGE_OFFLINE         0x0200
 194 struct data_volume_usage_s;
 195 typedef struct data_volume_usage_s data_volume_usage_t;
 196 struct data_volume_usage_s {
 197         char *name;
 198         uint32_t flags;
 199
 200         na_elem_t *snap_query;
 201
 202         uint64_t norm_free;
 203         uint64_t norm_used;
 204         uint64_t snap_reserved;
 205         uint64_t snap_used;
 206         uint64_t sis_saved;
 207
 208         data_volume_usage_t *next;
 209 };
 210
 211 typedef struct {
 212         cna_interval_t interval;
 213         na_elem_t *query;
 214
 215         ignorelist_t *il_capacity;
 216         ignorelist_t *il_snapshot;
 217
 218         data_volume_usage_t *volumes;
 219 } cfg_volume_usage_t;
 220 /* }}} cfg_volume_usage_t */
 221
 222 /*! Data types for system statistics {{{
 223  *
 224  * \brief Persistent data for system performance counters
 225  */
 226 #define CFG_SYSTEM_CPU  0x01
 227 #define CFG_SYSTEM_NET  0x02
 228 #define CFG_SYSTEM_OPS  0x04
 229 #define CFG_SYSTEM_DISK 0x08
 230 #define CFG_SYSTEM_ALL  0x0F
 231 typedef struct {
 232         uint32_t flags;
 233         cna_interval_t interval;
 234         na_elem_t *query;
 235 } cfg_system_t;
 236 /* }}} cfg_system_t */
 237
 238 struct host_config_s {
 239         char *name;
 240         na_server_transport_t protocol;
 241         char *host;
 242         int port;
 243         char *username;
 244         char *password;
 245         int interval;
 246
 247         na_server_t *srv;
 248         cfg_wafl_t *cfg_wafl;
 249         cfg_disk_t *cfg_disk;
 250         cfg_volume_perf_t *cfg_volume_perf;
 251         cfg_volume_usage_t *cfg_volume_usage;
 252         cfg_system_t *cfg_system;
 253
 254         struct host_config_s *next;
 255 };
 256
 257 /*
 258  * Free functions
 259  *
 260  * Used to free the various structures above.
 261  */
 262 static void free_disk (disk_t *disk) /* {{{ */
 263 {
 264         disk_t *next;
 265
 266         if (disk == NULL)
 267                 return;
 268
 269         next = disk->next;
 270
 271         sfree (disk->name);
 272         sfree (disk);
 273
 274         free_disk (next);
 275 } /* }}} void free_disk */
 276
 277 static void free_cfg_wafl (cfg_wafl_t *cw) /* {{{ */
 278 {
 279         if (cw == NULL)
 280                 return;
 281
 282         if (cw->query != NULL)
 283                 na_elem_free (cw->query);
 284
 285         sfree (cw);
 286 } /* }}} void free_cfg_wafl */
 287
 288 static void free_cfg_disk (cfg_disk_t *cfg_disk) /* {{{ */
 289 {
 290         if (cfg_disk == NULL)
 291                 return;
 292
 293         if (cfg_disk->query != NULL)
 294                 na_elem_free (cfg_disk->query);
 295
 296         free_disk (cfg_disk->disks);
 297         sfree (cfg_disk);
 298 } /* }}} void free_cfg_disk */
 299
 300 static void free_cfg_volume_perf (cfg_volume_perf_t *cvp) /* {{{ */
 301 {
 302         data_volume_perf_t *data;
 303
 304         if (cvp == NULL)
 305                 return;
 306
 307         /* Free the ignorelists */
 308         ignorelist_free (cvp->il_octets);
 309         ignorelist_free (cvp->il_operations);
 310         ignorelist_free (cvp->il_latency);
 311
 312         /* Free the linked list of volumes */
 313         data = cvp->volumes;
 314         while (data != NULL)
 315         {
 316                 data_volume_perf_t *next = data->next;
 317                 sfree (data->name);
 318                 sfree (data);
 319                 data = next;
 320         }
 321
 322         if (cvp->query != NULL)
 323                 na_elem_free (cvp->query);
 324
 325         sfree (cvp);
 326 } /* }}} void free_cfg_volume_perf */
 327
 328 static void free_cfg_volume_usage (cfg_volume_usage_t *cvu) /* {{{ */
 329 {
 330         data_volume_usage_t *data;
 331
 332         if (cvu == NULL)
 333                 return;
 334
 335         /* Free the ignorelists */
 336         ignorelist_free (cvu->il_capacity);
 337         ignorelist_free (cvu->il_snapshot);
 338
 339         /* Free the linked list of volumes */
 340         data = cvu->volumes;
 341         while (data != NULL)
 342         {
 343                 data_volume_usage_t *next = data->next;
 344                 sfree (data->name);
 345                 if (data->snap_query != NULL)
 346                         na_elem_free(data->snap_query);
 347                 sfree (data);
 348                 data = next;
 349         }
 350
 351         if (cvu->query != NULL)
 352                 na_elem_free (cvu->query);
 353
 354         sfree (cvu);
 355 } /* }}} void free_cfg_volume_usage */
 356
 357 static void free_cfg_system (cfg_system_t *cs) /* {{{ */
 358 {
 359         if (cs == NULL)
 360                 return;
 361
 362         if (cs->query != NULL)
 363                 na_elem_free (cs->query);
 364
 365         sfree (cs);
 366 } /* }}} void free_cfg_system */
 367
 368 static void free_host_config (host_config_t *hc) /* {{{ */
 369 {
 370         host_config_t *next;
 371
 372         if (hc == NULL)
 373                 return;
 374
 375         next = hc->next;
 376
 377         sfree (hc->name);
 378         sfree (hc->host);
 379         sfree (hc->username);
 380         sfree (hc->password);
 381
 382         free_cfg_disk (hc->cfg_disk);
 383         free_cfg_wafl (hc->cfg_wafl);
 384         free_cfg_volume_perf (hc->cfg_volume_perf);
 385         free_cfg_volume_usage (hc->cfg_volume_usage);
 386         free_cfg_system (hc->cfg_system);
 387
 388         if (hc->srv != NULL)
 389                 na_server_close (hc->srv);
 390
 391         sfree (hc);
 392
 393         free_host_config (next);
 394 } /* }}} void free_host_config */
 395
 396 /*
 397  * Auxiliary functions
 398  *
 399  * Used to look up volumes and disks or to handle flags.
 400  */
 401 static disk_t *get_disk(cfg_disk_t *cd, const char *name) /* {{{ */
 402 {
 403         disk_t *d;
 404
 405         if ((cd == NULL) || (name == NULL))
 406                 return (NULL);
 407
 408         for (d = cd->disks; d != NULL; d = d->next) {
 409                 if (strcmp(d->name, name) == 0)
 410                         return d;
 411         }
 412
 413         d = malloc(sizeof(*d));
 414         if (d == NULL)
 415                 return (NULL);
 416         memset (d, 0, sizeof (*d));
 417         d->next = NULL;
 418
 419         d->name = strdup(name);
 420         if (d->name == NULL) {
 421                 sfree (d);
 422                 return (NULL);
 423         }
 424
 425         d->next = cd->disks;
 426         cd->disks = d;
 427
 428         return d;
 429 } /* }}} disk_t *get_disk */
 430
 431 static data_volume_usage_t *get_volume_usage (cfg_volume_usage_t *cvu, /* {{{ */
 432                 const char *name)
 433 {
 434         data_volume_usage_t *last;
 435         data_volume_usage_t *new;
 436
 437         int ignore_capacity = 0;
 438         int ignore_snapshot = 0;
 439
 440         if ((cvu == NULL) || (name == NULL))
 441                 return (NULL);
 442
 443         last = cvu->volumes;
 444         while (last != NULL)
 445         {
 446                 if (strcmp (last->name, name) == 0)
 447                         return (last);
 448
 449                 if (last->next == NULL)
 450                         break;
 451
 452                 last = last->next;
 453         }
 454
 455         /* Check the ignorelists. If *both* tell us to ignore a volume, return NULL. */
 456         ignore_capacity = ignorelist_match (cvu->il_capacity, name);
 457         ignore_snapshot = ignorelist_match (cvu->il_snapshot, name);
 458         if ((ignore_capacity != 0) && (ignore_snapshot != 0))
 459                 return (NULL);
 460
 461         /* Not found: allocate. */
 462         new = malloc (sizeof (*new));
 463         if (new == NULL)
 464                 return (NULL);
 465         memset (new, 0, sizeof (*new));
 466         new->next = NULL;
 467
 468         new->name = strdup (name);
 469         if (new->name == NULL)
 470         {
 471                 sfree (new);
 472                 return (NULL);
 473         }
 474
 475         if (ignore_capacity == 0)
 476                 new->flags |= CFG_VOLUME_USAGE_DF;
 477         if (ignore_snapshot == 0) {
 478                 new->flags |= CFG_VOLUME_USAGE_SNAP;
 479                 new->snap_query = na_elem_new ("snapshot-list-info");
 480                 na_child_add_string(new->snap_query, "target-type", "volume");
 481                 na_child_add_string(new->snap_query, "target-name", name);
 482         } else {
 483                 new->snap_query = NULL;
 484         }
 485
 486         /* Add to end of list. */
 487         if (last == NULL)
 488                 cvu->volumes = new;
 489         else
 490                 last->next = new;
 491
 492         return (new);
 493 } /* }}} data_volume_usage_t *get_volume_usage */
 494
 495 static data_volume_perf_t *get_volume_perf (cfg_volume_perf_t *cvp, /* {{{ */
 496                 const char *name)
 497 {
 498         data_volume_perf_t *last;
 499         data_volume_perf_t *new;
 500
 501         int ignore_octets = 0;
 502         int ignore_operations = 0;
 503         int ignore_latency = 0;
 504
 505         if ((cvp == NULL) || (name == NULL))
 506                 return (NULL);
 507
 508         last = cvp->volumes;
 509         while (last != NULL)
 510         {
 511                 if (strcmp (last->name, name) == 0)
 512                         return (last);
 513
 514                 if (last->next == NULL)
 515                         break;
 516
 517                 last = last->next;
 518         }
 519
 520         /* Check the ignorelists. If *all three* tell us to ignore a volume, return
 521          * NULL. */
 522         ignore_octets = ignorelist_match (cvp->il_octets, name);
 523         ignore_operations = ignorelist_match (cvp->il_operations, name);
 524         ignore_latency = ignorelist_match (cvp->il_latency, name);
 525         if ((ignore_octets != 0) || (ignore_operations != 0)
 526                         || (ignore_latency != 0))
 527                 return (NULL);
 528
 529         /* Not found: allocate. */
 530         new = malloc (sizeof (*new));
 531         if (new == NULL)
 532                 return (NULL);
 533         memset (new, 0, sizeof (*new));
 534         new->next = NULL;
 535
 536         new->name = strdup (name);
 537         if (new->name == NULL)
 538         {
 539                 sfree (new);
 540                 return (NULL);
 541         }
 542
 543         if (ignore_octets == 0)
 544                 new->flags |= CFG_VOLUME_PERF_IO;
 545         if (ignore_operations == 0)
 546                 new->flags |= CFG_VOLUME_PERF_OPS;
 547         if (ignore_latency == 0)
 548                 new->flags |= CFG_VOLUME_PERF_LATENCY;
 549
 550         /* Add to end of list. */
 551         if (last == NULL)
 552                 cvp->volumes = new;
 553         else
 554                 last->next = new;
 555
 556         return (new);
 557 } /* }}} data_volume_perf_t *get_volume_perf */
 558
 559 /*
 560  * Various submit functions.
 561  *
 562  * They all eventually call "submit_values" which creates a value_list_t and
 563  * dispatches it to the daemon.
 564  */
 565 static int submit_values (const char *host, /* {{{ */
 566                 const char *plugin_inst,
 567                 const char *type, const char *type_inst,
 568                 value_t *values, int values_len,
 569                 time_t timestamp)
 570 {
 571         value_list_t vl = VALUE_LIST_INIT;
 572
 573         vl.values = values;
 574         vl.values_len = values_len;
 575
 576         if (timestamp > 0)
 577                 vl.time = timestamp;
 578
 579         if (host != NULL)
 580                 sstrncpy (vl.host, host, sizeof (vl.host));
 581         else
 582                 sstrncpy (vl.host, hostname_g, sizeof (vl.host));
 583         sstrncpy (vl.plugin, "netapp", sizeof (vl.plugin));
 584         if (plugin_inst != NULL)
 585                 sstrncpy (vl.plugin_instance, plugin_inst, sizeof (vl.plugin_instance));
 586         sstrncpy (vl.type, type, sizeof (vl.type));
 587         if (type_inst != NULL)
 588                 sstrncpy (vl.type_instance, type_inst, sizeof (vl.type_instance));
 589
 590         return (plugin_dispatch_values (&vl));
 591 } /* }}} int submit_uint64 */
 592
 593 static int submit_two_counters (const char *host, const char *plugin_inst, /* {{{ */
 594                 const char *type, const char *type_inst, counter_t val0, counter_t val1,
 595                 time_t timestamp)
 596 {
 597         value_t values[2];
 598
 599         values[0].counter = val0;
 600         values[1].counter = val1;
 601
 602         return (submit_values (host, plugin_inst, type, type_inst,
 603                                 values, 2, timestamp));
 604 } /* }}} int submit_two_counters */
 605
 606 static int submit_counter (const char *host, const char *plugin_inst, /* {{{ */
 607                 const char *type, const char *type_inst, counter_t counter, time_t timestamp)
 608 {
 609         value_t v;
 610
 611         v.counter = counter;
 612
 613         return (submit_values (host, plugin_inst, type, type_inst,
 614                                 &v, 1, timestamp));
 615 } /* }}} int submit_counter */
 616
 617 static int submit_two_gauge (const char *host, const char *plugin_inst, /* {{{ */
 618                 const char *type, const char *type_inst, gauge_t val0, gauge_t val1,
 619                 time_t timestamp)
 620 {
 621         value_t values[2];
 622
 623         values[0].gauge = val0;
 624         values[1].gauge = val1;
 625
 626         return (submit_values (host, plugin_inst, type, type_inst,
 627                                 values, 2, timestamp));
 628 } /* }}} int submit_two_gauge */
 629
 630 static int submit_double (const char *host, const char *plugin_inst, /* {{{ */
 631                 const char *type, const char *type_inst, double d, time_t timestamp)
 632 {
 633         value_t v;
 634
 635         v.gauge = (gauge_t) d;
 636
 637         return (submit_values (host, plugin_inst, type, type_inst,
 638                                 &v, 1, timestamp));
 639 } /* }}} int submit_uint64 */
 640
 641 /* Calculate hit ratio from old and new counters and submit the resulting
 642  * percentage. Used by "submit_wafl_data". */
 643 static int submit_cache_ratio (const char *host, /* {{{ */
 644                 const char *plugin_inst,
 645                 const char *type_inst,
 646                 uint64_t new_hits,
 647                 uint64_t new_misses,
 648                 uint64_t old_hits,
 649                 uint64_t old_misses,
 650                 time_t timestamp)
 651 {
 652         value_t v;
 653
 654         if ((new_hits >= old_hits) && (new_misses >= old_misses)) {
 655                 uint64_t hits;
 656                 uint64_t misses;
 657
 658                 hits = new_hits - old_hits;
 659                 misses = new_misses - old_misses;
 660
 661                 v.gauge = 100.0 * ((gauge_t) hits) / ((gauge_t) (hits + misses));
 662         } else {
 663                 v.gauge = NAN;
 664         }
 665
 666         return (submit_values (host, plugin_inst, "cache_ratio", type_inst,
 667                                 &v, 1, timestamp));
 668 } /* }}} int submit_cache_ratio */
 669
 670 /* Submits all the caches used by WAFL. Uses "submit_cache_ratio". */
 671 static int submit_wafl_data (const char *hostname, const char *instance, /* {{{ */
 672                 cfg_wafl_t *old_data, const cfg_wafl_t *new_data)
 673 {
 674         /* Submit requested counters */
 675         if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_NAME_CACHE | HAVE_WAFL_NAME_CACHE)
 676                         && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_NAME_CACHE))
 677                 submit_cache_ratio (hostname, instance, "name_cache_hit",
 678                                 new_data->name_cache_hit, new_data->name_cache_miss,
 679                                 old_data->name_cache_hit, old_data->name_cache_miss,
 680                                 new_data->timestamp);
 681
 682         if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_DIR_CACHE | HAVE_WAFL_FIND_DIR)
 683                         && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_FIND_DIR))
 684                 submit_cache_ratio (hostname, instance, "find_dir_hit",
 685                                 new_data->find_dir_hit, new_data->find_dir_miss,
 686                                 old_data->find_dir_hit, old_data->find_dir_miss,
 687                                 new_data->timestamp);
 688
 689         if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_BUF_CACHE | HAVE_WAFL_BUF_HASH)
 690                         && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_BUF_HASH))
 691                 submit_cache_ratio (hostname, instance, "buf_hash_hit",
 692                                 new_data->buf_hash_hit, new_data->buf_hash_miss,
 693                                 old_data->buf_hash_hit, old_data->buf_hash_miss,
 694                                 new_data->timestamp);
 695
 696         if (HAS_ALL_FLAGS (old_data->flags, CFG_WAFL_INODE_CACHE | HAVE_WAFL_INODE_CACHE)
 697                         && HAS_ALL_FLAGS (new_data->flags, HAVE_WAFL_INODE_CACHE))
 698                 submit_cache_ratio (hostname, instance, "inode_cache_hit",
 699                                 new_data->inode_cache_hit, new_data->inode_cache_miss,
 700                                 old_data->inode_cache_hit, old_data->inode_cache_miss,
 701                                 new_data->timestamp);
 702
 703         /* Clear old HAVE_* flags */
 704         old_data->flags &= ~HAVE_WAFL_ALL;
 705
 706         /* Copy all counters */
 707         old_data->timestamp        = new_data->timestamp;
 708         old_data->name_cache_hit   = new_data->name_cache_hit;
 709         old_data->name_cache_miss  = new_data->name_cache_miss;
 710         old_data->find_dir_hit     = new_data->find_dir_hit;
 711         old_data->find_dir_miss    = new_data->find_dir_miss;
 712         old_data->buf_hash_hit     = new_data->buf_hash_hit;
 713         old_data->buf_hash_miss    = new_data->buf_hash_miss;
 714         old_data->inode_cache_hit  = new_data->inode_cache_hit;
 715         old_data->inode_cache_miss = new_data->inode_cache_miss;
 716
 717         /* Copy HAVE_* flags */
 718         old_data->flags |= (new_data->flags & HAVE_WAFL_ALL);
 719
 720         return (0);
 721 } /* }}} int submit_wafl_data */
 722
 723 /* Submits volume performance data to the daemon, taking care to honor and
 724  * update flags appropriately. */
 725 static int submit_volume_perf_data (const char *hostname, /* {{{ */
 726                 data_volume_perf_t *old_data,
 727                 const data_volume_perf_t *new_data)
 728 {
 729         char plugin_instance[DATA_MAX_NAME_LEN];
 730
 731         if ((hostname == NULL) || (old_data == NULL) || (new_data == NULL))
 732                 return (-1);
 733
 734         ssnprintf (plugin_instance, sizeof (plugin_instance),
 735                         "volume-%s", old_data->name);
 736
 737         /* Check for and submit disk-octet values */
 738         if (HAS_ALL_FLAGS (old_data->flags, CFG_VOLUME_PERF_IO)
 739                         && HAS_ALL_FLAGS (new_data->flags, HAVE_VOLUME_PERF_BYTES_READ | HAVE_VOLUME_PERF_BYTES_WRITE))
 740         {
 741                 submit_two_counters (hostname, plugin_instance, "disk_octets", /* type instance = */ NULL,
 742                                 (counter_t) new_data->read_bytes, (counter_t) new_data->write_bytes, new_data->timestamp);
 743         }
 744
 745         /* Check for and submit disk-operations values */
 746         if (HAS_ALL_FLAGS (old_data->flags, CFG_VOLUME_PERF_OPS)
 747                         && HAS_ALL_FLAGS (new_data->flags, HAVE_VOLUME_PERF_OPS_READ | HAVE_VOLUME_PERF_OPS_WRITE))
 748         {
 749                 submit_two_counters (hostname, plugin_instance, "disk_ops", /* type instance = */ NULL,
 750                                 (counter_t) new_data->read_ops, (counter_t) new_data->write_ops, new_data->timestamp);
 751         }
 752
 753         /* Check for, calculate and submit disk-latency values */
 754         if (HAS_ALL_FLAGS (old_data->flags, CFG_VOLUME_PERF_LATENCY
 755                                 | HAVE_VOLUME_PERF_OPS_READ | HAVE_VOLUME_PERF_OPS_WRITE
 756                                 | HAVE_VOLUME_PERF_LATENCY_READ | HAVE_VOLUME_PERF_LATENCY_WRITE)
 757                         && HAS_ALL_FLAGS (new_data->flags, HAVE_VOLUME_PERF_OPS_READ | HAVE_VOLUME_PERF_OPS_WRITE
 758                                 | HAVE_VOLUME_PERF_LATENCY_READ | HAVE_VOLUME_PERF_LATENCY_WRITE))
 759         {
 760                 gauge_t latency_per_op_read;
 761                 gauge_t latency_per_op_write;
 762
 763                 latency_per_op_read = NAN;
 764                 latency_per_op_write = NAN;
 765
 766                 /* Check if a counter wrapped around. */
 767                 if ((new_data->read_ops > old_data->read_ops)
 768                                 && (new_data->read_latency > old_data->read_latency))
 769                 {
 770                         uint64_t diff_ops_read;
 771                         uint64_t diff_latency_read;
 772
 773                         diff_ops_read = new_data->read_ops - old_data->read_ops;
 774                         diff_latency_read = new_data->read_latency - old_data->read_latency;
 775
 776                         if (diff_ops_read > 0)
 777                                 latency_per_op_read = ((gauge_t) diff_latency_read) / ((gauge_t) diff_ops_read);
 778                 }
 779
 780                 if ((new_data->write_ops > old_data->write_ops)
 781                                 && (new_data->write_latency > old_data->write_latency))
 782                 {
 783                         uint64_t diff_ops_write;
 784                         uint64_t diff_latency_write;
 785
 786                         diff_ops_write = new_data->write_ops - old_data->write_ops;
 787                         diff_latency_write = new_data->write_latency - old_data->write_latency;
 788
 789                         if (diff_ops_write > 0)
 790                                 latency_per_op_write = ((gauge_t) diff_latency_write) / ((gauge_t) diff_ops_write);
 791                 }
 792
 793                 submit_two_gauge (hostname, plugin_instance, "disk_latency", /* type instance = */ NULL,
 794                                 latency_per_op_read, latency_per_op_write, new_data->timestamp);
 795         }
 796
 797         /* Clear all HAVE_* flags. */
 798         old_data->flags &= ~HAVE_VOLUME_PERF_ALL;
 799
 800         /* Copy all counters */
 801         old_data->timestamp = new_data->timestamp;
 802         old_data->read_bytes = new_data->read_bytes;
 803         old_data->write_bytes = new_data->write_bytes;
 804         old_data->read_ops = new_data->read_ops;
 805         old_data->write_ops = new_data->write_ops;
 806         old_data->read_latency = new_data->read_latency;
 807         old_data->write_latency = new_data->write_latency;
 808
 809         /* Copy the HAVE_* flags */
 810         old_data->flags |= (new_data->flags & HAVE_VOLUME_PERF_ALL);
 811
 812         return (0);
 813 } /* }}} int submit_volume_perf_data */
 814
 815 /*
 816  * Query functions
 817  *
 818  * These functions are called with appropriate data returned by the libnetapp
 819  * interface which is parsed and submitted with the above functions.
 820  */
 821 /* Data corresponding to <WAFL /> */
 822 static int cna_handle_wafl_data (const char *hostname, cfg_wafl_t *cfg_wafl, /* {{{ */
 823                 na_elem_t *data)
 824 {
 825         cfg_wafl_t perf_data;
 826         const char *plugin_inst;
 827
 828         na_elem_t *instances;
 829         na_elem_t *counter;
 830         na_elem_iter_t counter_iter;
 831
 832         memset (&perf_data, 0, sizeof (perf_data));
 833
 834         perf_data.timestamp = (time_t) na_child_get_uint64 (data, "timestamp", 0);
 835
 836         instances = na_elem_child(na_elem_child (data, "instances"), "instance-data");
 837         if (instances == NULL)
 838         {
 839                 ERROR ("netapp plugin: cna_handle_wafl_data: "
 840                                 "na_elem_child (\"instances\") failed.");
 841                 return (-1);
 842         }
 843
 844         plugin_inst = na_child_get_string(instances, "name");
 845         if (plugin_inst == NULL)
 846         {
 847                 ERROR ("netapp plugin: cna_handle_wafl_data: "
 848                                 "na_child_get_string (\"name\") failed.");
 849                 return (-1);
 850         }
 851
 852         /* Iterate over all counters */
 853         counter_iter = na_child_iterator (na_elem_child (instances, "counters"));
 854         for (counter = na_iterator_next (&counter_iter);
 855                         counter != NULL;
 856                         counter = na_iterator_next (&counter_iter))
 857         {
 858                 const char *name;
 859                 uint64_t value;
 860
 861                 name = na_child_get_string(counter, "name");
 862                 if (name == NULL)
 863                         continue;
 864
 865                 value = na_child_get_uint64(counter, "value", UINT64_MAX);
 866                 if (value == UINT64_MAX)
 867                         continue;
 868
 869                 if (!strcmp(name, "name_cache_hit")) {
 870                         perf_data.name_cache_hit = value;
 871                         perf_data.flags |= HAVE_WAFL_NAME_CACHE_HIT;
 872                 } else if (!strcmp(name, "name_cache_miss")) {
 873                         perf_data.name_cache_miss = value;
 874                         perf_data.flags |= HAVE_WAFL_NAME_CACHE_MISS;
 875                 } else if (!strcmp(name, "find_dir_hit")) {
 876                         perf_data.find_dir_hit = value;
 877                         perf_data.flags |= HAVE_WAFL_FIND_DIR_HIT;
 878                 } else if (!strcmp(name, "find_dir_miss")) {
 879                         perf_data.find_dir_miss = value;
 880                         perf_data.flags |= HAVE_WAFL_FIND_DIR_MISS;
 881                 } else if (!strcmp(name, "buf_hash_hit")) {
 882                         perf_data.buf_hash_hit = value;
 883                         perf_data.flags |= HAVE_WAFL_BUF_HASH_HIT;
 884                 } else if (!strcmp(name, "buf_hash_miss")) {
 885                         perf_data.buf_hash_miss = value;
 886                         perf_data.flags |= HAVE_WAFL_BUF_HASH_MISS;
 887                 } else if (!strcmp(name, "inode_cache_hit")) {
 888                         perf_data.inode_cache_hit = value;
 889                         perf_data.flags |= HAVE_WAFL_INODE_CACHE_HIT;
 890                 } else if (!strcmp(name, "inode_cache_miss")) {
 891                         perf_data.inode_cache_miss = value;
 892                         perf_data.flags |= HAVE_WAFL_INODE_CACHE_MISS;
 893                 } else {
 894                         DEBUG("netapp plugin: cna_handle_wafl_data: "
 895                                         "Found unexpected child: %s", name);
 896                 }
 897         }
 898
 899         return (submit_wafl_data (hostname, plugin_inst, cfg_wafl, &perf_data));
 900 } /* }}} void cna_handle_wafl_data */
 901
 902 static int cna_setup_wafl (cfg_wafl_t *cw) /* {{{ */
 903 {
 904         na_elem_t *e;
 905
 906         if (cw == NULL)
 907                 return (EINVAL);
 908
 909         if (cw->query != NULL)
 910                 return (0);
 911
 912         cw->query = na_elem_new("perf-object-get-instances");
 913         if (cw->query == NULL)
 914         {
 915                 ERROR ("netapp plugin: na_elem_new failed.");
 916                 return (-1);
 917         }
 918         na_child_add_string (cw->query, "objectname", "wafl");
 919
 920         e = na_elem_new("counters");
 921         if (e == NULL)
 922         {
 923                 na_elem_free (cw->query);
 924                 cw->query = NULL;
 925                 ERROR ("netapp plugin: na_elem_new failed.");
 926                 return (-1);
 927         }
 928         na_child_add_string(e, "counter", "name_cache_hit");
 929         na_child_add_string(e, "counter", "name_cache_miss");
 930         na_child_add_string(e, "counter", "find_dir_hit");
 931         na_child_add_string(e, "counter", "find_dir_miss");
 932         na_child_add_string(e, "counter", "buf_hash_hit");
 933         na_child_add_string(e, "counter", "buf_hash_miss");
 934         na_child_add_string(e, "counter", "inode_cache_hit");
 935         na_child_add_string(e, "counter", "inode_cache_miss");
 936
 937         na_child_add(cw->query, e);
 938
 939         return (0);
 940 } /* }}} int cna_setup_wafl */
 941
 942 static int cna_query_wafl (host_config_t *host) /* {{{ */
 943 {
 944         na_elem_t *data;
 945         int status;
 946         time_t now;
 947
 948         if (host == NULL)
 949                 return (EINVAL);
 950
 951         /* If WAFL was not configured, return without doing anything. */
 952         if (host->cfg_wafl == NULL)
 953                 return (0);
 954
 955         now = time (NULL);
 956         if ((host->cfg_wafl->interval.interval + host->cfg_wafl->interval.last_read) > now)
 957                 return (0);
 958
 959         status = cna_setup_wafl (host->cfg_wafl);
 960         if (status != 0)
 961                 return (status);
 962         assert (host->cfg_wafl->query != NULL);
 963
 964         data = na_server_invoke_elem(host->srv, host->cfg_wafl->query);
 965         if (na_results_status (data) != NA_OK)
 966         {
 967                 ERROR ("netapp plugin: cna_query_wafl: na_server_invoke_elem failed: %s",
 968                                 na_results_reason (data));
 969                 na_elem_free (data);
 970                 return (-1);
 971         }
 972
 973         status = cna_handle_wafl_data (host->name, host->cfg_wafl, data);
 974
 975         if (status == 0)
 976                 host->cfg_wafl->interval.last_read = now;
 977
 978         na_elem_free (data);
 979         return (status);
 980 } /* }}} int cna_query_wafl */
 981
 982 /* Data corresponding to <Disks /> */
 983 static int cna_handle_disk_data (const char *hostname, /* {{{ */
 984                 cfg_disk_t *cfg_disk, na_elem_t *data)
 985 {
 986         time_t timestamp;
 987         na_elem_t *instances;
 988         na_elem_t *instance;
 989         na_elem_iter_t instance_iter;
 990         disk_t *worst_disk = NULL;
 991
 992         if ((cfg_disk == NULL) || (data == NULL))
 993                 return (EINVAL);
 994
 995         timestamp = (time_t) na_child_get_uint64(data, "timestamp", 0);
 996
 997         instances = na_elem_child (data, "instances");
 998         if (instances == NULL)
 999         {
1000                 ERROR ("netapp plugin: cna_handle_disk_data: "
1001                                 "na_elem_child (\"instances\") failed.");
1002                 return (-1);
1003         }
1004
1005         /* Iterate over all children */
1006         instance_iter = na_child_iterator (instances);
1007         for (instance = na_iterator_next (&instance_iter);
1008                         instance != NULL;
1009                         instance = na_iterator_next(&instance_iter))
1010         {
1011                 disk_t *old_data;
1012                 disk_t  new_data;
1013
1014                 na_elem_iter_t counter_iterator;
1015                 na_elem_t *counter;
1016
1017                 memset (&new_data, 0, sizeof (new_data));
1018                 new_data.timestamp = timestamp;
1019                 new_data.disk_busy_percent = NAN;
1020
1021                 old_data = get_disk(cfg_disk, na_child_get_string (instance, "name"));
1022                 if (old_data == NULL)
1023                         continue;
1024
1025                 /* Look for the "disk_busy" and "base_for_disk_busy" counters */
1026                 counter_iterator = na_child_iterator(na_elem_child(instance, "counters"));
1027                 for (counter = na_iterator_next(&counter_iterator);
1028                                 counter != NULL;
1029                                 counter = na_iterator_next(&counter_iterator))
1030                 {
1031                         const char *name;
1032                         uint64_t value;
1033
1034                         name = na_child_get_string(counter, "name");
1035                         if (name == NULL)
1036                                 continue;
1037
1038                         value = na_child_get_uint64(counter, "value", UINT64_MAX);
1039                         if (value == UINT64_MAX)
1040                                 continue;
1041
1042                         if (strcmp(name, "disk_busy") == 0)
1043                         {
1044                                 new_data.disk_busy = value;
1045                                 new_data.flags |= HAVE_DISK_BUSY;
1046                         }
1047                         else if (strcmp(name, "base_for_disk_busy") == 0)
1048                         {
1049                                 new_data.base_for_disk_busy = value;
1050                                 new_data.flags |= HAVE_DISK_BASE;
1051                         }
1052                         else
1053                         {
1054                                 DEBUG ("netapp plugin: cna_handle_disk_data: "
1055                                                 "Counter not handled: %s = %"PRIu64,
1056                                                 name, value);
1057                         }
1058                 }
1059
1060                 /* If all required counters are available and did not just wrap around,
1061                  * calculate the busy percentage. Otherwise, the value is initialized to
1062                  * NAN at the top of the for-loop. */
1063                 if (HAS_ALL_FLAGS (old_data->flags, HAVE_DISK_BUSY | HAVE_DISK_BASE)
1064                                 && HAS_ALL_FLAGS (new_data.flags, HAVE_DISK_BUSY | HAVE_DISK_BASE)
1065                                 && (new_data.disk_busy >= old_data->disk_busy)
1066                                 && (new_data.base_for_disk_busy > old_data->base_for_disk_busy))
1067                 {
1068                         uint64_t busy_diff;
1069                         uint64_t base_diff;
1070
1071                         busy_diff = new_data.disk_busy - old_data->disk_busy;
1072                         base_diff = new_data.base_for_disk_busy - old_data->base_for_disk_busy;
1073
1074                         new_data.disk_busy_percent = 100.0
1075                                 * ((gauge_t) busy_diff) / ((gauge_t) base_diff);
1076                 }
1077
1078                 /* Clear HAVE_* flags */
1079                 old_data->flags &= ~HAVE_DISK_ALL;
1080
1081                 /* Copy data */
1082                 old_data->timestamp = new_data.timestamp;
1083                 old_data->disk_busy = new_data.disk_busy;
1084                 old_data->base_for_disk_busy = new_data.base_for_disk_busy;
1085                 old_data->disk_busy_percent = new_data.disk_busy_percent;
1086
1087                 /* Copy flags */
1088                 old_data->flags |= (new_data.flags & HAVE_DISK_ALL);
1089
1090                 if ((worst_disk == NULL)
1091                                 || (worst_disk->disk_busy_percent < old_data->disk_busy_percent))
1092                         worst_disk = old_data;
1093         } /* for (all disks) */
1094
1095         if ((cfg_disk->flags & CFG_DISK_BUSIEST) && (worst_disk != NULL))
1096                 submit_double (hostname, "system", "percent", "disk_busy",
1097                                 worst_disk->disk_busy_percent, timestamp);
1098
1099         return (0);
1100 } /* }}} int cna_handle_disk_data */
1101
1102 static int cna_setup_disk (cfg_disk_t *cd) /* {{{ */
1103 {
1104         na_elem_t *e;
1105
1106         if (cd == NULL)
1107                 return (EINVAL);
1108
1109         if (cd->query != NULL)
1110                 return (0);
1111
1112         cd->query = na_elem_new ("perf-object-get-instances");
1113         if (cd->query == NULL)
1114         {
1115                 ERROR ("netapp plugin: na_elem_new failed.");
1116                 return (-1);
1117         }
1118         na_child_add_string (cd->query, "objectname", "disk");
1119
1120         e = na_elem_new("counters");
1121         if (e == NULL)
1122         {
1123                 na_elem_free (cd->query);
1124                 cd->query = NULL;
1125                 ERROR ("netapp plugin: na_elem_new failed.");
1126                 return (-1);
1127         }
1128         na_child_add_string(e, "counter", "disk_busy");
1129         na_child_add_string(e, "counter", "base_for_disk_busy");
1130         na_child_add(cd->query, e);
1131
1132         return (0);
1133 } /* }}} int cna_setup_disk */
1134
1135 static int cna_query_disk (host_config_t *host) /* {{{ */
1136 {
1137         na_elem_t *data;
1138         int status;
1139         time_t now;
1140
1141         if (host == NULL)
1142                 return (EINVAL);
1143
1144         /* If the user did not configure disk statistics, return without doing
1145          * anything. */
1146         if (host->cfg_disk == NULL)
1147                 return (0);
1148
1149         now = time (NULL);
1150         if ((host->cfg_disk->interval.interval + host->cfg_disk->interval.last_read) > now)
1151                 return (0);
1152
1153         status = cna_setup_disk (host->cfg_disk);
1154         if (status != 0)
1155                 return (status);
1156         assert (host->cfg_disk->query != NULL);
1157
1158         data = na_server_invoke_elem(host->srv, host->cfg_disk->query);
1159         if (na_results_status (data) != NA_OK)
1160         {
1161                 ERROR ("netapp plugin: cna_query_disk: na_server_invoke_elem failed: %s",
1162                                 na_results_reason (data));
1163                 na_elem_free (data);
1164                 return (-1);
1165         }
1166
1167         status = cna_handle_disk_data (host->name, host->cfg_disk, data);
1168
1169         if (status == 0)
1170                 host->cfg_disk->interval.last_read = now;
1171
1172         na_elem_free (data);
1173         return (status);
1174 } /* }}} int cna_query_disk */
1175
1176 /* Data corresponding to <VolumePerf /> */
1177 static int cna_handle_volume_perf_data (const char *hostname, /* {{{ */
1178                 cfg_volume_perf_t *cvp, na_elem_t *data)
1179 {
1180         time_t timestamp;
1181         na_elem_t *elem_instances;
1182         na_elem_iter_t iter_instances;
1183         na_elem_t *elem_instance;
1184
1185         timestamp = (time_t) na_child_get_uint64(data, "timestamp", 0);
1186
1187         elem_instances = na_elem_child(data, "instances");
1188         if (elem_instances == NULL)
1189         {
1190                 ERROR ("netapp plugin: handle_volume_perf_data: "
1191                                 "na_elem_child (\"instances\") failed.");
1192                 return (-1);
1193         }
1194
1195         iter_instances = na_child_iterator (elem_instances);
1196         for (elem_instance = na_iterator_next(&iter_instances);
1197                         elem_instance != NULL;
1198                         elem_instance = na_iterator_next(&iter_instances))
1199         {
1200                 const char *name;
1201
1202                 data_volume_perf_t perf_data;
1203                 data_volume_perf_t *v;
1204
1205                 na_elem_t *elem_counters;
1206                 na_elem_iter_t iter_counters;
1207                 na_elem_t *elem_counter;
1208
1209                 memset (&perf_data, 0, sizeof (perf_data));
1210                 perf_data.timestamp = timestamp;
1211
1212                 name = na_child_get_string (elem_instance, "name");
1213                 if (name == NULL)
1214                         continue;
1215
1216                 /* get_volume_perf may return NULL if this volume is to be ignored. */
1217                 v = get_volume_perf (cvp, name);
1218                 if (v == NULL)
1219                         continue;
1220
1221                 elem_counters = na_elem_child (elem_instance, "counters");
1222                 if (elem_counters == NULL)
1223                         continue;
1224
1225                 iter_counters = na_child_iterator (elem_counters);
1226                 for (elem_counter = na_iterator_next(&iter_counters);
1227                                 elem_counter != NULL;
1228                                 elem_counter = na_iterator_next(&iter_counters))
1229                 {
1230                         const char *name;
1231                         uint64_t value;
1232
1233                         name = na_child_get_string (elem_counter, "name");
1234                         if (name == NULL)
1235                                 continue;
1236
1237                         value = na_child_get_uint64 (elem_counter, "value", UINT64_MAX);
1238                         if (value == UINT64_MAX)
1239                                 continue;
1240
1241                         if (!strcmp(name, "read_data")) {
1242                                 perf_data.read_bytes = value;
1243                                 perf_data.flags |= HAVE_VOLUME_PERF_BYTES_READ;
1244                         } else if (!strcmp(name, "write_data")) {
1245                                 perf_data.write_bytes = value;
1246                                 perf_data.flags |= HAVE_VOLUME_PERF_BYTES_WRITE;
1247                         } else if (!strcmp(name, "read_ops")) {
1248                                 perf_data.read_ops = value;
1249                                 perf_data.flags |= HAVE_VOLUME_PERF_OPS_READ;
1250                         } else if (!strcmp(name, "write_ops")) {
1251                                 perf_data.write_ops = value;
1252                                 perf_data.flags |= HAVE_VOLUME_PERF_OPS_WRITE;
1253                         } else if (!strcmp(name, "read_latency")) {
1254                                 perf_data.read_latency = value;
1255                                 perf_data.flags |= HAVE_VOLUME_PERF_LATENCY_READ;
1256                         } else if (!strcmp(name, "write_latency")) {
1257                                 perf_data.write_latency = value;
1258                                 perf_data.flags |= HAVE_VOLUME_PERF_LATENCY_WRITE;
1259                         }
1260                 } /* for (elem_counter) */
1261
1262                 submit_volume_perf_data (hostname, v, &perf_data);
1263         } /* for (volume) */
1264
1265         return (0);
1266 } /* }}} int cna_handle_volume_perf_data */
1267
1268 static int cna_setup_volume_perf (cfg_volume_perf_t *cd) /* {{{ */
1269 {
1270         na_elem_t *e;
1271
1272         if (cd == NULL)
1273                 return (EINVAL);
1274
1275         if (cd->query != NULL)
1276                 return (0);
1277
1278         cd->query = na_elem_new ("perf-object-get-instances");
1279         if (cd->query == NULL)
1280         {
1281                 ERROR ("netapp plugin: na_elem_new failed.");
1282                 return (-1);
1283         }
1284         na_child_add_string (cd->query, "objectname", "volume");
1285
1286         e = na_elem_new("counters");
1287         if (e == NULL)
1288         {
1289                 na_elem_free (cd->query);
1290                 cd->query = NULL;
1291                 ERROR ("netapp plugin: na_elem_new failed.");
1292                 return (-1);
1293         }
1294         na_child_add_string(e, "counter", "read_ops");
1295         na_child_add_string(e, "counter", "write_ops");
1296         na_child_add_string(e, "counter", "read_data");
1297         na_child_add_string(e, "counter", "write_data");
1298         na_child_add_string(e, "counter", "read_latency");
1299         na_child_add_string(e, "counter", "write_latency");
1300         na_child_add(cd->query, e);
1301
1302         return (0);
1303 } /* }}} int cna_setup_volume_perf */
1304
1305 static int cna_query_volume_perf (host_config_t *host) /* {{{ */
1306 {
1307         na_elem_t *data;
1308         int status;
1309         time_t now;
1310
1311         if (host == NULL)
1312                 return (EINVAL);
1313
1314         /* If the user did not configure volume performance statistics, return
1315          * without doing anything. */
1316         if (host->cfg_volume_perf == NULL)
1317                 return (0);
1318
1319         now = time (NULL);
1320         if ((host->cfg_volume_perf->interval.interval + host->cfg_volume_perf->interval.last_read) > now)
1321                 return (0);
1322
1323         status = cna_setup_volume_perf (host->cfg_volume_perf);
1324         if (status != 0)
1325                 return (status);
1326         assert (host->cfg_volume_perf->query != NULL);
1327
1328         data = na_server_invoke_elem (host->srv, host->cfg_volume_perf->query);
1329         if (na_results_status (data) != NA_OK)
1330         {
1331                 ERROR ("netapp plugin: cna_query_volume_perf: na_server_invoke_elem failed: %s",
1332                                 na_results_reason (data));
1333                 na_elem_free (data);
1334                 return (-1);
1335         }
1336
1337         status = cna_handle_volume_perf_data (host->name, host->cfg_volume_perf, data);
1338
1339         if (status == 0)
1340                 host->cfg_volume_perf->interval.last_read = now;
1341
1342         na_elem_free (data);
1343         return (status);
1344 } /* }}} int cna_query_volume_perf */
1345
1346 /* Data corresponding to <VolumeUsage /> */
1347 static int cna_submit_volume_usage_data (const char *hostname, /* {{{ */
1348                 cfg_volume_usage_t *cfg_volume)
1349 {
1350         data_volume_usage_t *v;
1351
1352         for (v = cfg_volume->volumes; v != NULL; v = v->next)
1353         {
1354                 char plugin_instance[DATA_MAX_NAME_LEN];
1355
1356                 uint64_t norm_used = v->norm_used;
1357                 uint64_t norm_free = v->norm_free;
1358                 uint64_t sis_saved = v->sis_saved;
1359                 uint64_t snap_reserve_used = 0;
1360                 uint64_t snap_reserve_free = v->snap_reserved;
1361                 uint64_t snap_norm_used = v->snap_used;
1362
1363                 ssnprintf (plugin_instance, sizeof (plugin_instance),
1364                                 "volume-%s", v->name);
1365
1366                 if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SNAP_USED | HAVE_VOLUME_USAGE_SNAP_RSVD)) {
1367                         if (v->snap_reserved > v->snap_used) {
1368                                 snap_reserve_free = v->snap_reserved - v->snap_used;
1369                                 snap_reserve_used = v->snap_used;
1370                                 snap_norm_used = 0;
1371                         } else {
1372                                 snap_reserve_free = 0;
1373                                 snap_reserve_used = v->snap_reserved;
1374                                 snap_norm_used = v->snap_used - v->snap_reserved;
1375                         }
1376                 }
1377
1378                 /* The space used by snapshots but not reserved for them is included in
1379                  * both, norm_used and snap_norm_used. If possible, subtract this here. */
1380                 if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_NORM_USED | HAVE_VOLUME_USAGE_SNAP_USED))
1381                 {
1382                         if (norm_used >= snap_norm_used)
1383                                 norm_used -= snap_norm_used;
1384                         else
1385                         {
1386                                 ERROR ("netapp plugin: (norm_used = %"PRIu64") < (snap_norm_used = "
1387                                                 "%"PRIu64"). Invalidating both.",
1388                                                 norm_used, snap_norm_used);
1389                                 v->flags &= ~(HAVE_VOLUME_USAGE_NORM_USED | HAVE_VOLUME_USAGE_SNAP_USED);
1390                         }
1391                 }
1392
1393                 if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_NORM_FREE))
1394                         submit_double (hostname, /* plugin instance = */ plugin_instance,
1395                                         "df_complex", "free",
1396                                         (double) norm_free, /* timestamp = */ 0);
1397
1398                 if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SIS_SAVED))
1399                         submit_double (hostname, /* plugin instance = */ plugin_instance,
1400                                         "df_complex", "sis_saved",
1401                                         (double) sis_saved, /* timestamp = */ 0);
1402
1403                 if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_NORM_USED))
1404                         submit_double (hostname, /* plugin instance = */ plugin_instance,
1405                                         "df_complex", "used",
1406                                         (double) norm_used, /* timestamp = */ 0);
1407
1408                 if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SNAP_RSVD))
1409                         submit_double (hostname, /* plugin instance = */ plugin_instance,
1410                                         "df_complex", "snap_reserved",
1411                                         (double) snap_reserve_free, /* timestamp = */ 0);
1412
1413                 if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SNAP_USED | HAVE_VOLUME_USAGE_SNAP_RSVD))
1414                         submit_double (hostname, /* plugin instance = */ plugin_instance,
1415                                         "df_complex", "snap_reserve_used",
1416                                         (double) snap_reserve_used, /* timestamp = */ 0);
1417
1418                 if (HAS_ALL_FLAGS (v->flags, HAVE_VOLUME_USAGE_SNAP_USED))
1419                         submit_double (hostname, /* plugin instance = */ plugin_instance,
1420                                         "df_complex", "snap_normal_used",
1421                                         (double) snap_norm_used, /* timestamp = */ 0);
1422
1423                 /* Clear all the HAVE_* flags */
1424                 v->flags &= ~HAVE_VOLUME_USAGE_ALL;
1425         } /* for (v = cfg_volume->volumes) */
1426
1427         return (0);
1428 } /* }}} int cna_submit_volume_usage_data */
1429
1430 /* Switch the state of a volume between online and offline and send out a
1431  * notification. */
1432 static int cna_change_volume_status (const char *hostname, /* {{{ */
1433                 data_volume_usage_t *v)
1434 {
1435         notification_t n;
1436
1437         memset (&n, 0, sizeof (&n));
1438         n.time = time (NULL);
1439         sstrncpy (n.host, hostname, sizeof (n.host));
1440         sstrncpy (n.plugin, "netapp", sizeof (n.plugin));
1441         sstrncpy (n.plugin_instance, v->name, sizeof (n.plugin_instance));
1442
1443         if ((v->flags & IS_VOLUME_USAGE_OFFLINE) != 0) {
1444                 n.severity = NOTIF_OKAY;
1445                 ssnprintf (n.message, sizeof (n.message),
1446                                 "Volume %s is now online.", v->name);
1447                 v->flags &= ~IS_VOLUME_USAGE_OFFLINE;
1448         } else {
1449                 n.severity = NOTIF_WARNING;
1450                 ssnprintf (n.message, sizeof (n.message),
1451                                 "Volume %s is now offline.", v->name);
1452                 v->flags |= IS_VOLUME_USAGE_OFFLINE;
1453         }
1454
1455         return (plugin_dispatch_notification (&n));
1456 } /* }}} int cna_change_volume_status */
1457
1458 static void cna_handle_volume_snap_usage(const host_config_t *host, /* {{{ */
1459                 data_volume_usage_t *v)
1460 {
1461         uint64_t snap_used = 0, value;
1462         na_elem_t *data, *elem_snap, *elem_snapshots;
1463         na_elem_iter_t iter_snap;
1464
1465         data = na_server_invoke_elem(host->srv, v->snap_query);
1466         if (na_results_status(data) != NA_OK)
1467         {
1468                 if (na_results_errno(data) == EVOLUMEOFFLINE) {
1469                         if ((v->flags & IS_VOLUME_USAGE_OFFLINE) == 0)
1470                                 cna_change_volume_status (host->name, v);
1471                 } else {
1472                         ERROR ("netapp plugin: cna_handle_volume_snap_usage: na_server_invoke_elem for "
1473                                         "volume \"%s\" failed with error %d: %s", v->name,
1474                                         na_results_errno(data), na_results_reason(data));
1475                 }
1476                 na_elem_free(data);
1477                 return;
1478         }
1479
1480         if ((v->flags & IS_VOLUME_USAGE_OFFLINE) != 0)
1481                 cna_change_volume_status (host->name, v);
1482
1483         elem_snapshots = na_elem_child (data, "snapshots");
1484         if (elem_snapshots == NULL)
1485         {
1486                 ERROR ("netapp plugin: cna_handle_volume_snap_usage: "
1487                                 "na_elem_child (\"snapshots\") failed.");
1488                 na_elem_free(data);
1489                 return;
1490         }
1491
1492         iter_snap = na_child_iterator (elem_snapshots);
1493         for (elem_snap = na_iterator_next (&iter_snap);
1494                         elem_snap != NULL;
1495                         elem_snap = na_iterator_next (&iter_snap))
1496         {
1497                 value = na_child_get_uint64(elem_snap, "cumulative-total", 0);
1498                 /* "cumulative-total" is the total size of the oldest snapshot plus all
1499                  * newer ones in blocks (1KB). We therefore are looking for the highest
1500                  * number of all snapshots - that's the size required for the snapshots. */
1501                 if (value > snap_used)
1502                         snap_used = value;
1503         }
1504         na_elem_free (data);
1505         /* snap_used is in 1024 byte blocks */
1506         v->snap_used = snap_used * 1024;
1507         v->flags |= HAVE_VOLUME_USAGE_SNAP_USED;
1508 } /* }}} void cna_handle_volume_snap_usage */
1509
1510 static int cna_handle_volume_usage_data (const host_config_t *host, /* {{{ */
1511                 cfg_volume_usage_t *cfg_volume, na_elem_t *data)
1512 {
1513         na_elem_t *elem_volume;
1514         na_elem_t *elem_volumes;
1515         na_elem_iter_t iter_volume;
1516
1517         elem_volumes = na_elem_child (data, "volumes");
1518         if (elem_volumes == NULL)
1519         {
1520                 ERROR ("netapp plugin: cna_handle_volume_usage_data: "
1521                                 "na_elem_child (\"volumes\") failed.");
1522                 return (-1);
1523         }
1524
1525         iter_volume = na_child_iterator (elem_volumes);
1526         for (elem_volume = na_iterator_next (&iter_volume);
1527                         elem_volume != NULL;
1528                         elem_volume = na_iterator_next (&iter_volume))
1529         {
1530                 const char *volume_name, *state;
1531
1532                 data_volume_usage_t *v;
1533                 uint64_t value;
1534
1535                 na_elem_t *sis;
1536                 const char *sis_state;
1537                 uint64_t sis_saved_reported;
1538
1539                 volume_name = na_child_get_string (elem_volume, "name");
1540                 if (volume_name == NULL)
1541                         continue;
1542
1543                 state = na_child_get_string (elem_volume, "state");
1544                 if ((state == NULL) || (strcmp(state, "online") != 0))
1545                         continue;
1546
1547                 /* get_volume_usage may return NULL if the volume is to be ignored. */
1548                 v = get_volume_usage (cfg_volume, volume_name);
1549                 if (v == NULL)
1550                         continue;
1551
1552                 if ((v->flags & CFG_VOLUME_USAGE_SNAP) != 0)
1553                         cna_handle_volume_snap_usage(host, v);
1554
1555                 if ((v->flags & CFG_VOLUME_USAGE_DF) == 0)
1556                         continue;
1557
1558                 /* 2^4 exa-bytes? This will take a while ;) */
1559                 value = na_child_get_uint64(elem_volume, "size-available", UINT64_MAX);
1560                 if (value != UINT64_MAX) {
1561                         v->norm_free = value;
1562                         v->flags |= HAVE_VOLUME_USAGE_NORM_FREE;
1563                 }
1564
1565                 value = na_child_get_uint64(elem_volume, "size-used", UINT64_MAX);
1566                 if (value != UINT64_MAX) {
1567                         v->norm_used = value;
1568                         v->flags |= HAVE_VOLUME_USAGE_NORM_USED;
1569                 }
1570
1571                 value = na_child_get_uint64(elem_volume, "snapshot-blocks-reserved", UINT64_MAX);
1572                 if (value != UINT64_MAX) {
1573                         /* 1 block == 1024 bytes  as per API docs */
1574                         v->snap_reserved = 1024 * value;
1575                         v->flags |= HAVE_VOLUME_USAGE_SNAP_RSVD;
1576                 }
1577
1578                 sis = na_elem_child(elem_volume, "sis");
1579                 if (sis == NULL)
1580                         continue;
1581
1582                 sis_state = na_child_get_string(sis, "state");
1583                 if (sis_state == NULL)
1584                         continue;
1585
1586                 /* If SIS is not enabled, there's nothing left to do for this volume. */
1587                 if (strcmp ("enabled", sis_state) != 0)
1588                         continue;
1589
1590                 sis_saved_reported = na_child_get_uint64(sis, "size-saved", UINT64_MAX);
1591                 if (sis_saved_reported == UINT64_MAX)
1592                         continue;
1593
1594                 /* size-saved is actually a 32 bit number, so ... time for some guesswork. */
1595                 if ((sis_saved_reported >> 32) != 0) {
1596                         /* In case they ever fix this bug. */
1597                         v->sis_saved = sis_saved_reported;
1598                         v->flags |= HAVE_VOLUME_USAGE_SIS_SAVED;
1599                 } else { /* really hacky work-around code. {{{ */
1600                         uint64_t sis_saved_percent;
1601                         uint64_t sis_saved_guess;
1602                         uint64_t overflow_guess;
1603                         uint64_t guess1, guess2, guess3;
1604
1605                         /* Check if we have v->norm_used. Without it, we cannot calculate
1606                          * sis_saved_guess. */
1607                         if ((v->flags & HAVE_VOLUME_USAGE_NORM_USED) == 0)
1608                                 continue;
1609
1610                         sis_saved_percent = na_child_get_uint64(sis, "percentage-saved", UINT64_MAX);
1611                         if (sis_saved_percent > 100)
1612                                 continue;
1613
1614                         /* The "size-saved" value is a 32bit unsigned integer. This is a bug and
1615                          * will hopefully be fixed in later versions. To work around the bug, try
1616                          * to figure out how often the 32bit integer wrapped around by using the
1617                          * "percentage-saved" value. Because the percentage is in the range
1618                          * [0-100], this should work as long as the saved space does not exceed
1619                          * 400 GBytes. */
1620                         /* percentage-saved = size-saved / (size-saved + size-used) */
1621                         if (sis_saved_percent < 100)
1622                                 sis_saved_guess = v->norm_used * sis_saved_percent / (100 - sis_saved_percent);
1623                         else
1624                                 sis_saved_guess = v->norm_used;
1625
1626                         overflow_guess = sis_saved_guess >> 32;
1627                         guess1 = overflow_guess ? ((overflow_guess - 1) << 32) + sis_saved_reported : sis_saved_reported;
1628                         guess2 = (overflow_guess << 32) + sis_saved_reported;
1629                         guess3 = ((overflow_guess + 1) << 32) + sis_saved_reported;
1630
1631                         if (sis_saved_guess < guess2) {
1632                                 if ((sis_saved_guess - guess1) < (guess2 - sis_saved_guess))
1633                                         v->sis_saved = guess1;
1634                                 else
1635                                         v->sis_saved = guess2;
1636                         } else {
1637                                 if ((sis_saved_guess - guess2) < (guess3 - sis_saved_guess))
1638                                         v->sis_saved = guess2;
1639                                 else
1640                                         v->sis_saved = guess3;
1641                         }
1642                         v->flags |= HAVE_VOLUME_USAGE_SIS_SAVED;
1643                 } /* }}} end of 32-bit workaround */
1644         } /* for (elem_volume) */
1645
1646         return (cna_submit_volume_usage_data (host->name, cfg_volume));
1647 } /* }}} int cna_handle_volume_usage_data */
1648
1649 static int cna_setup_volume_usage (cfg_volume_usage_t *cvu) /* {{{ */
1650 {
1651         if (cvu == NULL)
1652                 return (EINVAL);
1653
1654         if (cvu->query != NULL)
1655                 return (0);
1656
1657         cvu->query = na_elem_new ("volume-list-info");
1658         if (cvu->query == NULL)
1659         {
1660                 ERROR ("netapp plugin: na_elem_new failed.");
1661                 return (-1);
1662         }
1663
1664         return (0);
1665 } /* }}} int cna_setup_volume_usage */
1666
1667 static int cna_query_volume_usage (host_config_t *host) /* {{{ */
1668 {
1669         na_elem_t *data;
1670         int status;
1671         time_t now;
1672
1673         if (host == NULL)
1674                 return (EINVAL);
1675
1676         /* If the user did not configure volume_usage statistics, return without
1677          * doing anything. */
1678         if (host->cfg_volume_usage == NULL)
1679                 return (0);
1680
1681         now = time (NULL);
1682         if ((host->cfg_volume_usage->interval.interval + host->cfg_volume_usage->interval.last_read) > now)
1683                 return (0);
1684
1685         status = cna_setup_volume_usage (host->cfg_volume_usage);
1686         if (status != 0)
1687                 return (status);
1688         assert (host->cfg_volume_usage->query != NULL);
1689
1690         data = na_server_invoke_elem(host->srv, host->cfg_volume_usage->query);
1691         if (na_results_status (data) != NA_OK)
1692         {
1693                 ERROR ("netapp plugin: cna_query_volume_usage: na_server_invoke_elem failed: %s",
1694                                 na_results_reason (data));
1695                 na_elem_free (data);
1696                 return (-1);
1697         }
1698
1699         status = cna_handle_volume_usage_data (host, host->cfg_volume_usage, data);
1700
1701         if (status == 0)
1702                 host->cfg_volume_usage->interval.last_read = now;
1703
1704         na_elem_free (data);
1705         return (status);
1706 } /* }}} int cna_query_volume_usage */
1707
1708 /* Data corresponding to <System /> */
1709 static int cna_handle_system_data (const char *hostname, /* {{{ */
1710                 cfg_system_t *cfg_system, na_elem_t *data)
1711 {
1712         na_elem_t *instances;
1713         na_elem_t *counter;
1714         na_elem_iter_t counter_iter;
1715
1716         counter_t disk_read = 0, disk_written = 0;
1717         counter_t net_recv = 0, net_sent = 0;
1718         counter_t cpu_busy = 0, cpu_total = 0;
1719         uint32_t counter_flags = 0;
1720
1721         const char *instance;
1722         time_t timestamp;
1723
1724         timestamp = (time_t) na_child_get_uint64 (data, "timestamp", 0);
1725
1726         instances = na_elem_child(na_elem_child (data, "instances"), "instance-data");
1727         if (instances == NULL)
1728         {
1729                 ERROR ("netapp plugin: cna_handle_system_data: "
1730                                 "na_elem_child (\"instances\") failed.");
1731                 return (-1);
1732         }
1733
1734         instance = na_child_get_string (instances, "name");
1735         if (instance == NULL)
1736         {
1737                 ERROR ("netapp plugin: cna_handle_system_data: "
1738                                 "na_child_get_string (\"name\") failed.");
1739                 return (-1);
1740         }
1741
1742         counter_iter = na_child_iterator (na_elem_child (instances, "counters"));
1743         for (counter = na_iterator_next (&counter_iter);
1744                         counter != NULL;
1745                         counter = na_iterator_next (&counter_iter))
1746         {
1747                 const char *name;
1748                 uint64_t value;
1749
1750                 name = na_child_get_string(counter, "name");
1751                 if (name == NULL)
1752                         continue;
1753
1754                 value = na_child_get_uint64(counter, "value", UINT64_MAX);
1755                 if (value == UINT64_MAX)
1756                         continue;
1757
1758                 if (!strcmp(name, "disk_data_read")) {
1759                         disk_read = (counter_t) (value * 1024);
1760                         counter_flags |= 0x01;
1761                 } else if (!strcmp(name, "disk_data_written")) {
1762                         disk_written = (counter_t) (value * 1024);
1763                         counter_flags |= 0x02;
1764                 } else if (!strcmp(name, "net_data_recv")) {
1765                         net_recv = (counter_t) (value * 1024);
1766                         counter_flags |= 0x04;
1767                 } else if (!strcmp(name, "net_data_sent")) {
1768                         net_sent = (counter_t) (value * 1024);
1769                         counter_flags |= 0x08;
1770                 } else if (!strcmp(name, "cpu_busy")) {
1771                         cpu_busy = (counter_t) value;
1772                         counter_flags |= 0x10;
1773                 } else if (!strcmp(name, "cpu_elapsed_time")) {
1774                         cpu_total = (counter_t) value;
1775                         counter_flags |= 0x20;
1776                 } else if ((cfg_system->flags & CFG_SYSTEM_OPS)
1777                                 && (value > 0) && (strlen(name) > 4)
1778                                 && (!strcmp(name + strlen(name) - 4, "_ops"))) {
1779                         submit_counter (hostname, instance, "disk_ops_complex", name,
1780                                         (counter_t) value, timestamp);
1781                 }
1782         } /* for (counter) */
1783
1784         if ((cfg_system->flags & CFG_SYSTEM_DISK)
1785                         && (HAS_ALL_FLAGS (counter_flags, 0x01 | 0x02)))
1786                 submit_two_counters (hostname, instance, "disk_octets", NULL,
1787                                 disk_read, disk_written, timestamp);
1788
1789         if ((cfg_system->flags & CFG_SYSTEM_NET)
1790                         && (HAS_ALL_FLAGS (counter_flags, 0x04 | 0x08)))
1791                 submit_two_counters (hostname, instance, "if_octets", NULL,
1792                                 net_recv, net_sent, timestamp);
1793
1794         if ((cfg_system->flags & CFG_SYSTEM_CPU)
1795                         && (HAS_ALL_FLAGS (counter_flags, 0x10 | 0x20)))
1796         {
1797                 submit_counter (hostname, instance, "cpu", "system",
1798                                 cpu_busy, timestamp);
1799                 submit_counter (hostname, instance, "cpu", "idle",
1800                                 cpu_total - cpu_busy, timestamp);
1801         }
1802
1803         return (0);
1804 } /* }}} int cna_handle_system_data */
1805
1806 static int cna_setup_system (cfg_system_t *cs) /* {{{ */
1807 {
1808         if (cs == NULL)
1809                 return (EINVAL);
1810
1811         if (cs->query != NULL)
1812                 return (0);
1813
1814         cs->query = na_elem_new ("perf-object-get-instances");
1815         if (cs->query == NULL)
1816         {
1817                 ERROR ("netapp plugin: na_elem_new failed.");
1818                 return (-1);
1819         }
1820         na_child_add_string (cs->query, "objectname", "system");
1821
1822         return (0);
1823 } /* }}} int cna_setup_system */
1824
1825 static int cna_query_system (host_config_t *host) /* {{{ */
1826 {
1827         na_elem_t *data;
1828         int status;
1829         time_t now;
1830
1831         if (host == NULL)
1832                 return (EINVAL);
1833
1834         /* If system statistics were not configured, return without doing anything. */
1835         if (host->cfg_system == NULL)
1836                 return (0);
1837
1838         now = time (NULL);
1839         if ((host->cfg_system->interval.interval + host->cfg_system->interval.last_read) > now)
1840                 return (0);
1841
1842         status = cna_setup_system (host->cfg_system);
1843         if (status != 0)
1844                 return (status);
1845         assert (host->cfg_system->query != NULL);
1846
1847         data = na_server_invoke_elem(host->srv, host->cfg_system->query);
1848         if (na_results_status (data) != NA_OK)
1849         {
1850                 ERROR ("netapp plugin: cna_query_system: na_server_invoke_elem failed: %s",
1851                                 na_results_reason (data));
1852                 na_elem_free (data);
1853                 return (-1);
1854         }
1855
1856         status = cna_handle_system_data (host->name, host->cfg_system, data);
1857
1858         if (status == 0)
1859                 host->cfg_system->interval.last_read = now;
1860
1861         na_elem_free (data);
1862         return (status);
1863 } /* }}} int cna_query_system */
1864
1865 /*
1866  * Configuration handling
1867  */
1868 /* Sets a given flag if the boolean argument is true and unsets the flag if it
1869  * is false. On error, the flag-field is not changed. */
1870 static int cna_config_bool_to_flag (const oconfig_item_t *ci, /* {{{ */
1871                 uint32_t *flags, uint32_t flag)
1872 {
1873         if ((ci == NULL) || (flags == NULL))
1874                 return (EINVAL);
1875
1876         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
1877         {
1878                 WARNING ("netapp plugin: The %s option needs exactly one boolean argument.",
1879                                 ci->key);
1880                 return (-1);
1881         }
1882
1883         if (ci->values[0].value.boolean)
1884                 *flags |= flag;
1885         else
1886                 *flags &= ~flag;
1887
1888         return (0);
1889 } /* }}} int cna_config_bool_to_flag */
1890
1891 /* Handling of the "Interval" option which is allowed in every block. */
1892 static int cna_config_get_interval (const oconfig_item_t *ci, /* {{{ */
1893                 cna_interval_t *out_interval)
1894 {
1895         time_t tmp;
1896
1897         if ((ci == NULL) || (out_interval == NULL))
1898                 return (EINVAL);
1899
1900         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_NUMBER))
1901         {
1902                 WARNING ("netapp plugin: The `Interval' option needs exactly one numeric argument.");
1903                 return (-1);
1904         }
1905
1906         tmp = (time_t) (ci->values[0].value.number + .5);
1907         if (tmp < 1)
1908         {
1909                 WARNING ("netapp plugin: The `Interval' option needs a positive integer argument.");
1910                 return (-1);
1911         }
1912
1913         out_interval->interval = tmp;
1914         out_interval->last_read = 0;
1915
1916         return (0);
1917 } /* }}} int cna_config_get_interval */
1918
1919 /* Handling of the "GetIO", "GetOps" and "GetLatency" options within a
1920  * <VolumePerf /> block. */
1921 static void cna_config_volume_perf_option (cfg_volume_perf_t *cvp, /* {{{ */
1922                 const oconfig_item_t *ci)
1923 {
1924         char *name;
1925         ignorelist_t * il;
1926
1927         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
1928         {
1929                 WARNING ("netapp plugin: The %s option requires exactly one string argument.",
1930                                 ci->key);
1931                 return;
1932         }
1933
1934         name = ci->values[0].value.string;
1935
1936         if (strcasecmp ("GetIO", ci->key) == 0)
1937                 il = cvp->il_octets;
1938         else if (strcasecmp ("GetOps", ci->key) == 0)
1939                 il = cvp->il_operations;
1940         else if (strcasecmp ("GetLatency", ci->key) == 0)
1941                 il = cvp->il_latency;
1942         else
1943                 return;
1944
1945         ignorelist_add (il, name);
1946 } /* }}} void cna_config_volume_perf_option */
1947
1948 /* Handling of the "IgnoreSelectedIO", "IgnoreSelectedOps" and
1949  * "IgnoreSelectedLatency" options within a <VolumePerf /> block. */
1950 static void cna_config_volume_perf_default (cfg_volume_perf_t *cvp, /* {{{ */
1951                 const oconfig_item_t *ci)
1952 {
1953         ignorelist_t *il;
1954
1955         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
1956         {
1957                 WARNING ("netapp plugin: The %s option requires exactly one string argument.",
1958                                 ci->key);
1959                 return;
1960         }
1961
1962         if (strcasecmp ("IgnoreSelectedIO", ci->key) == 0)
1963                 il = cvp->il_octets;
1964         else if (strcasecmp ("IgnoreSelectedOps", ci->key) == 0)
1965                 il = cvp->il_operations;
1966         else if (strcasecmp ("IgnoreSelectedLatency", ci->key) == 0)
1967                 il = cvp->il_latency;
1968         else
1969                 return;
1970
1971         if (ci->values[0].value.boolean)
1972                 ignorelist_set_invert (il, /* invert = */ 0);
1973         else
1974                 ignorelist_set_invert (il, /* invert = */ 1);
1975 } /* }}} void cna_config_volume_perf_default */
1976
1977 /* Corresponds to a <Disks /> block */
1978 /*
1979  * <VolumePerf>
1980  *   GetIO "vol0"
1981  *   GetIO "vol1"
1982  *   IgnoreSelectedIO false
1983  *
1984  *   GetOps "vol0"
1985  *   GetOps "vol2"
1986  *   IgnoreSelectedOps false
1987  *
1988  *   GetLatency "vol2"
1989  *   GetLatency "vol3"
1990  *   IgnoreSelectedLatency false
1991  * </VolumePerf>
1992  */
1993 /* Corresponds to a <VolumePerf /> block */
1994 static int cna_config_volume_performance (host_config_t *host, /* {{{ */
1995                 const oconfig_item_t *ci)
1996 {
1997         cfg_volume_perf_t *cfg_volume_perf;
1998         int i;
1999
2000         if ((host == NULL) || (ci == NULL))
2001                 return (EINVAL);
2002
2003         if (host->cfg_volume_perf == NULL)
2004         {
2005                 cfg_volume_perf = malloc (sizeof (*cfg_volume_perf));
2006                 if (cfg_volume_perf == NULL)
2007                         return (ENOMEM);
2008                 memset (cfg_volume_perf, 0, sizeof (*cfg_volume_perf));
2009
2010                 /* Set default flags */
2011                 cfg_volume_perf->query = NULL;
2012                 cfg_volume_perf->volumes = NULL;
2013
2014                 cfg_volume_perf->il_octets = ignorelist_create (/* invert = */ 1);
2015                 if (cfg_volume_perf->il_octets == NULL)
2016                 {
2017                         sfree (cfg_volume_perf);
2018                         return (ENOMEM);
2019                 }
2020
2021                 cfg_volume_perf->il_operations = ignorelist_create (/* invert = */ 1);
2022                 if (cfg_volume_perf->il_operations == NULL)
2023                 {
2024                         ignorelist_free (cfg_volume_perf->il_octets);
2025                         sfree (cfg_volume_perf);
2026                         return (ENOMEM);
2027                 }
2028
2029                 cfg_volume_perf->il_latency = ignorelist_create (/* invert = */ 1);
2030                 if (cfg_volume_perf->il_latency == NULL)
2031                 {
2032                         ignorelist_free (cfg_volume_perf->il_octets);
2033                         ignorelist_free (cfg_volume_perf->il_operations);
2034                         sfree (cfg_volume_perf);
2035                         return (ENOMEM);
2036                 }
2037
2038                 host->cfg_volume_perf = cfg_volume_perf;
2039         }
2040         cfg_volume_perf = host->cfg_volume_perf;
2041
2042         for (i = 0; i < ci->children_num; ++i) {
2043                 oconfig_item_t *item = ci->children + i;
2044
2045                 /* if (!item || !item->key || !*item->key) continue; */
2046                 if (strcasecmp(item->key, "Interval") == 0)
2047                         cna_config_get_interval (item, &cfg_volume_perf->interval);
2048                 else if (!strcasecmp(item->key, "GetIO"))
2049                         cna_config_volume_perf_option (cfg_volume_perf, item);
2050                 else if (!strcasecmp(item->key, "GetOps"))
2051                         cna_config_volume_perf_option (cfg_volume_perf, item);
2052                 else if (!strcasecmp(item->key, "GetLatency"))
2053                         cna_config_volume_perf_option (cfg_volume_perf, item);
2054                 else if (!strcasecmp(item->key, "IgnoreSelectedIO"))
2055                         cna_config_volume_perf_default (cfg_volume_perf, item);
2056                 else if (!strcasecmp(item->key, "IgnoreSelectedOps"))
2057                         cna_config_volume_perf_default (cfg_volume_perf, item);
2058                 else if (!strcasecmp(item->key, "IgnoreSelectedLatency"))
2059                         cna_config_volume_perf_default (cfg_volume_perf, item);
2060                 else
2061                         WARNING ("netapp plugin: The option %s is not allowed within "
2062                                         "`VolumePerf' blocks.", item->key);
2063         }
2064
2065         return (0);
2066 } /* }}} int cna_config_volume_performance */
2067
2068 /* Handling of the "GetCapacity" and "GetSnapshot" options within a
2069  * <VolumeUsage /> block. */
2070 static void cna_config_volume_usage_option (cfg_volume_usage_t *cvu, /* {{{ */
2071                 const oconfig_item_t *ci)
2072 {
2073         char *name;
2074         ignorelist_t * il;
2075
2076         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING))
2077         {
2078                 WARNING ("netapp plugin: The %s option requires exactly one string argument.",
2079                                 ci->key);
2080                 return;
2081         }
2082
2083         name = ci->values[0].value.string;
2084
2085         if (strcasecmp ("GetCapacity", ci->key) == 0)
2086                 il = cvu->il_capacity;
2087         else if (strcasecmp ("GetSnapshot", ci->key) == 0)
2088                 il = cvu->il_snapshot;
2089         else
2090                 return;
2091
2092         ignorelist_add (il, name);
2093 } /* }}} void cna_config_volume_usage_option */
2094
2095 /* Handling of the "IgnoreSelectedCapacity" and "IgnoreSelectedSnapshot"
2096  * options within a <VolumeUsage /> block. */
2097 static void cna_config_volume_usage_default (cfg_volume_usage_t *cvu, /* {{{ */
2098                 const oconfig_item_t *ci)
2099 {
2100         ignorelist_t *il;
2101
2102         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN))
2103         {
2104                 WARNING ("netapp plugin: The %s option requires exactly one string argument.",
2105                                 ci->key);
2106                 return;
2107         }
2108
2109         if (strcasecmp ("IgnoreSelectedCapacity", ci->key) == 0)
2110                 il = cvu->il_capacity;
2111         else if (strcasecmp ("IgnoreSelectedSnapshot", ci->key) == 0)
2112                 il = cvu->il_snapshot;
2113         else
2114                 return;
2115
2116         if (ci->values[0].value.boolean)
2117                 ignorelist_set_invert (il, /* invert = */ 0);
2118         else
2119                 ignorelist_set_invert (il, /* invert = */ 1);
2120 } /* }}} void cna_config_volume_usage_default */
2121
2122 /* Corresponds to a <Disks /> block */
2123 static int cna_config_disk(host_config_t *host, oconfig_item_t *ci) { /* {{{ */
2124         cfg_disk_t *cfg_disk;
2125         int i;
2126
2127         if ((host == NULL) || (ci == NULL))
2128                 return (EINVAL);
2129
2130         if (host->cfg_disk == NULL)
2131         {
2132                 cfg_disk = malloc (sizeof (*cfg_disk));
2133                 if (cfg_disk == NULL)
2134                         return (ENOMEM);
2135                 memset (cfg_disk, 0, sizeof (*cfg_disk));
2136
2137                 /* Set default flags */
2138                 cfg_disk->flags = CFG_DISK_ALL;
2139                 cfg_disk->query = NULL;
2140                 cfg_disk->disks = NULL;
2141
2142                 host->cfg_disk = cfg_disk;
2143         }
2144         cfg_disk = host->cfg_disk;
2145
2146         for (i = 0; i < ci->children_num; ++i) {
2147                 oconfig_item_t *item = ci->children + i;
2148
2149                 /* if (!item || !item->key || !*item->key) continue; */
2150                 if (strcasecmp(item->key, "Interval") == 0)
2151                         cna_config_get_interval (item, &cfg_disk->interval);
2152                 else if (strcasecmp(item->key, "GetBusy") == 0)
2153                         cna_config_bool_to_flag (item, &cfg_disk->flags, CFG_DISK_BUSIEST);
2154         }
2155
2156         if ((cfg_disk->flags & CFG_DISK_ALL) == 0)
2157         {
2158                 NOTICE ("netapp plugin: All disk related values have been disabled. "
2159                                 "Collection of per-disk data will be disabled entirely.");
2160                 free_cfg_disk (host->cfg_disk);
2161                 host->cfg_disk = NULL;
2162         }
2163
2164         return (0);
2165 } /* }}} int cna_config_disk */
2166
2167 /* Corresponds to a <WAFL /> block */
2168 static int cna_config_wafl(host_config_t *host, oconfig_item_t *ci) /* {{{ */
2169 {
2170         cfg_wafl_t *cfg_wafl;
2171         int i;
2172
2173         if ((host == NULL) || (ci == NULL))
2174                 return (EINVAL);
2175
2176         if (host->cfg_wafl == NULL)
2177         {
2178                 cfg_wafl = malloc (sizeof (*cfg_wafl));
2179                 if (cfg_wafl == NULL)
2180                         return (ENOMEM);
2181                 memset (cfg_wafl, 0, sizeof (*cfg_wafl));
2182
2183                 /* Set default flags */
2184                 cfg_wafl->flags = CFG_WAFL_ALL;
2185
2186                 host->cfg_wafl = cfg_wafl;
2187         }
2188         cfg_wafl = host->cfg_wafl;
2189
2190         for (i = 0; i < ci->children_num; ++i) {
2191                 oconfig_item_t *item = ci->children + i;
2192
2193                 if (strcasecmp(item->key, "Interval") == 0)
2194                         cna_config_get_interval (item, &cfg_wafl->interval);
2195                 else if (!strcasecmp(item->key, "GetNameCache"))
2196                         cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_NAME_CACHE);
2197                 else if (!strcasecmp(item->key, "GetDirCache"))
2198                         cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_DIR_CACHE);
2199                 else if (!strcasecmp(item->key, "GetBufferCache"))
2200                         cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_BUF_CACHE);
2201                 else if (!strcasecmp(item->key, "GetInodeCache"))
2202                         cna_config_bool_to_flag (item, &cfg_wafl->flags, CFG_WAFL_INODE_CACHE);
2203                 else
2204                         WARNING ("netapp plugin: The %s config option is not allowed within "
2205                                         "`WAFL' blocks.", item->key);
2206         }
2207
2208         if ((cfg_wafl->flags & CFG_WAFL_ALL) == 0)
2209         {
2210                 NOTICE ("netapp plugin: All WAFL related values have been disabled. "
2211                                 "Collection of WAFL data will be disabled entirely.");
2212                 free_cfg_wafl (host->cfg_wafl);
2213                 host->cfg_wafl = NULL;
2214         }
2215
2216         return (0);
2217 } /* }}} int cna_config_wafl */
2218
2219 /*
2220  * <VolumeUsage>
2221  *   GetCapacity "vol0"
2222  *   GetCapacity "vol1"
2223  *   GetCapacity "vol2"
2224  *   GetCapacity "vol3"
2225  *   GetCapacity "vol4"
2226  *   IgnoreSelectedCapacity false
2227  *
2228  *   GetSnapshot "vol0"
2229  *   GetSnapshot "vol3"
2230  *   GetSnapshot "vol4"
2231  *   GetSnapshot "vol7"
2232  *   IgnoreSelectedSnapshot false
2233  * </VolumeUsage>
2234  */
2235 /* Corresponds to a <VolumeUsage /> block */
2236 static int cna_config_volume_usage(host_config_t *host, /* {{{ */
2237                 const oconfig_item_t *ci)
2238 {
2239         cfg_volume_usage_t *cfg_volume_usage;
2240         int i;
2241
2242         if ((host == NULL) || (ci == NULL))
2243                 return (EINVAL);
2244
2245         if (host->cfg_volume_usage == NULL)
2246         {
2247                 cfg_volume_usage = malloc (sizeof (*cfg_volume_usage));
2248                 if (cfg_volume_usage == NULL)
2249                         return (ENOMEM);
2250                 memset (cfg_volume_usage, 0, sizeof (*cfg_volume_usage));
2251
2252                 /* Set default flags */
2253                 cfg_volume_usage->query = NULL;
2254                 cfg_volume_usage->volumes = NULL;
2255
2256                 cfg_volume_usage->il_capacity = ignorelist_create (/* invert = */ 1);
2257                 if (cfg_volume_usage->il_capacity == NULL)
2258                 {
2259                         sfree (cfg_volume_usage);
2260                         return (ENOMEM);
2261                 }
2262
2263                 cfg_volume_usage->il_snapshot = ignorelist_create (/* invert = */ 1);
2264                 if (cfg_volume_usage->il_snapshot == NULL)
2265                 {
2266                         ignorelist_free (cfg_volume_usage->il_capacity);
2267                         sfree (cfg_volume_usage);
2268                         return (ENOMEM);
2269                 }
2270
2271                 host->cfg_volume_usage = cfg_volume_usage;
2272         }
2273         cfg_volume_usage = host->cfg_volume_usage;
2274
2275         for (i = 0; i < ci->children_num; ++i) {
2276                 oconfig_item_t *item = ci->children + i;
2277
2278                 /* if (!item || !item->key || !*item->key) continue; */
2279                 if (strcasecmp(item->key, "Interval") == 0)
2280                         cna_config_get_interval (item, &cfg_volume_usage->interval);
2281                 else if (!strcasecmp(item->key, "GetCapacity"))
2282                         cna_config_volume_usage_option (cfg_volume_usage, item);
2283                 else if (!strcasecmp(item->key, "GetSnapshot"))
2284                         cna_config_volume_usage_option (cfg_volume_usage, item);
2285                 else if (!strcasecmp(item->key, "IgnoreSelectedCapacity"))
2286                         cna_config_volume_usage_default (cfg_volume_usage, item);
2287                 else if (!strcasecmp(item->key, "IgnoreSelectedSnapshot"))
2288                         cna_config_volume_usage_default (cfg_volume_usage, item);
2289                 else
2290                         WARNING ("netapp plugin: The option %s is not allowed within "
2291                                         "`VolumeUsage' blocks.", item->key);
2292         }
2293
2294         return (0);
2295 } /* }}} int cna_config_volume_usage */
2296
2297 /* Corresponds to a <System /> block */
2298 static int cna_config_system (host_config_t *host, /* {{{ */
2299                 oconfig_item_t *ci)
2300 {
2301         cfg_system_t *cfg_system;
2302         int i;
2303
2304         if ((host == NULL) || (ci == NULL))
2305                 return (EINVAL);
2306
2307         if (host->cfg_system == NULL)
2308         {
2309                 cfg_system = malloc (sizeof (*cfg_system));
2310                 if (cfg_system == NULL)
2311                         return (ENOMEM);
2312                 memset (cfg_system, 0, sizeof (*cfg_system));
2313
2314                 /* Set default flags */
2315                 cfg_system->flags = CFG_SYSTEM_ALL;
2316                 cfg_system->query = NULL;
2317
2318                 host->cfg_system = cfg_system;
2319         }
2320         cfg_system = host->cfg_system;
2321
2322         for (i = 0; i < ci->children_num; ++i) {
2323                 oconfig_item_t *item = ci->children + i;
2324
2325                 if (strcasecmp(item->key, "Interval") == 0) {
2326                         cna_config_get_interval (item, &cfg_system->interval);
2327                 } else if (!strcasecmp(item->key, "GetCPULoad")) {
2328                         cna_config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_CPU);
2329                 } else if (!strcasecmp(item->key, "GetInterfaces")) {
2330                         cna_config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_NET);
2331                 } else if (!strcasecmp(item->key, "GetDiskOps")) {
2332                         cna_config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_OPS);
2333                 } else if (!strcasecmp(item->key, "GetDiskIO")) {
2334                         cna_config_bool_to_flag (item, &cfg_system->flags, CFG_SYSTEM_DISK);
2335                 } else {
2336                         WARNING ("netapp plugin: The %s config option is not allowed within "
2337                                         "`System' blocks.", item->key);
2338                 }
2339         }
2340
2341         if ((cfg_system->flags & CFG_SYSTEM_ALL) == 0)
2342         {
2343                 NOTICE ("netapp plugin: All system related values have been disabled. "
2344                                 "Collection of system data will be disabled entirely.");
2345                 free_cfg_system (host->cfg_system);
2346                 host->cfg_system = NULL;
2347         }
2348
2349         return (0);
2350 } /* }}} int cna_config_system */
2351
2352 /* Corresponds to a <Host /> block. */
2353 static host_config_t *cna_config_host (const oconfig_item_t *ci) /* {{{ */
2354 {
2355         oconfig_item_t *item;
2356         host_config_t *host;
2357         int status;
2358         int i;
2359
2360         if ((ci->values_num != 1) || (ci->values[0].type != OCONFIG_TYPE_STRING)) {
2361                 WARNING("netapp plugin: \"Host\" needs exactly one string argument. Ignoring host block.");
2362                 return 0;
2363         }
2364
2365         host = malloc(sizeof(*host));
2366         memset (host, 0, sizeof (*host));
2367         host->name = NULL;
2368         host->protocol = NA_SERVER_TRANSPORT_HTTPS;
2369         host->host = NULL;
2370         host->username = NULL;
2371         host->password = NULL;
2372         host->srv = NULL;
2373         host->cfg_wafl = NULL;
2374         host->cfg_disk = NULL;
2375         host->cfg_volume_perf = NULL;
2376         host->cfg_volume_usage = NULL;
2377         host->cfg_system = NULL;
2378
2379         status = cf_util_get_string (ci, &host->name);
2380         if (status != 0)
2381         {
2382                 sfree (host);
2383                 return (NULL);
2384         }
2385
2386         for (i = 0; i < ci->children_num; ++i) {
2387                 item = ci->children + i;
2388
2389                 status = 0;
2390
2391                 if (!strcasecmp(item->key, "Address")) {
2392                         status = cf_util_get_string (item, &host->host);
2393                 } else if (!strcasecmp(item->key, "Port")) {
2394                         int tmp;
2395
2396                         tmp = cf_util_get_port_number (item);
2397                         if (tmp > 0)
2398                                 host->port = tmp;
2399                 } else if (!strcasecmp(item->key, "Protocol")) {
2400                         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"))) {
2401                                 WARNING("netapp plugin: \"Protocol\" needs to be either \"http\" or \"https\". Ignoring host block \"%s\".", ci->values[0].value.string);
2402                                 return 0;
2403                         }
2404                         if (!strcasecmp(item->values[0].value.string, "http")) host->protocol = NA_SERVER_TRANSPORT_HTTP;
2405                         else host->protocol = NA_SERVER_TRANSPORT_HTTPS;
2406                 } else if (!strcasecmp(item->key, "User")) {
2407                         status = cf_util_get_string (item, &host->username);
2408                 } else if (!strcasecmp(item->key, "Password")) {
2409                         status = cf_util_get_string (item, &host->password);
2410                 } else if (!strcasecmp(item->key, "Interval")) {
2411                         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) {
2412                                 WARNING("netapp plugin: \"Interval\" of host %s needs exactly one integer argument.", ci->values[0].value.string);
2413                                 continue;
2414                         }
2415                         host->interval = item->values[0].value.number;
2416                 } else if (!strcasecmp(item->key, "WAFL")) {
2417                         cna_config_wafl(host, item);
2418                 } else if (!strcasecmp(item->key, "Disks")) {
2419                         cna_config_disk(host, item);
2420                 } else if (!strcasecmp(item->key, "VolumePerf")) {
2421                         cna_config_volume_performance(host, item);
2422                 } else if (!strcasecmp(item->key, "VolumeUsage")) {
2423                         cna_config_volume_usage(host, item);
2424                 } else if (!strcasecmp(item->key, "System")) {
2425                         cna_config_system(host, item);
2426                 } else {
2427                         WARNING("netapp plugin: Ignoring unknown config option \"%s\" in host block \"%s\".",
2428                                         item->key, ci->values[0].value.string);
2429                 }
2430
2431                 if (status != 0)
2432                         break;
2433         }
2434
2435         if (host->host == NULL)
2436                 host->host = strdup (host->name);
2437
2438         if (host->host == NULL)
2439                 status = -1;
2440
2441         if (host->port <= 0)
2442                 host->port = (host->protocol == NA_SERVER_TRANSPORT_HTTP) ? 80 : 443;
2443
2444         if ((host->username == NULL) || (host->password == NULL)) {
2445                 WARNING("netapp plugin: Please supply login information for host \"%s\". "
2446                                 "Ignoring host block.", host->name);
2447                 status = -1;
2448         }
2449
2450         if (status != 0)
2451         {
2452                 free_host_config (host);
2453                 return (NULL);
2454         }
2455
2456         return host;
2457 } /* }}} host_config_t *cna_config_host */
2458
2459 /*
2460  * Callbacks registered with the daemon
2461  *
2462  * Pretty standard stuff here.
2463  */
2464 static int cna_init_host (host_config_t *host) /* {{{ */
2465 {
2466         if (host == NULL)
2467                 return (EINVAL);
2468
2469         if (host->srv != NULL)
2470                 return (0);
2471
2472         /* Request version 1.1 of the ONTAP API */
2473         host->srv = na_server_open(host->host,
2474                         /* major version = */ 1, /* minor version = */ 1);
2475         if (host->srv == NULL) {
2476                 ERROR ("netapp plugin: na_server_open (%s) failed.", host->host);
2477                 return (-1);
2478         }
2479
2480         na_server_set_transport_type(host->srv, host->protocol,
2481                         /* transportarg = */ NULL);
2482         na_server_set_port(host->srv, host->port);
2483         na_server_style(host->srv, NA_STYLE_LOGIN_PASSWORD);
2484         na_server_adminuser(host->srv, host->username, host->password);
2485         na_server_set_timeout(host->srv, 5 /* seconds */);
2486
2487         return 0;
2488 } /* }}} int cna_init_host */
2489
2490 static int cna_init (void) /* {{{ */
2491 {
2492         char err[256];
2493
2494         memset (err, 0, sizeof (err));
2495         if (!na_startup(err, sizeof(err))) {
2496                 err[sizeof (err) - 1] = 0;
2497                 ERROR("netapp plugin: Error initializing netapp API: %s", err);
2498                 return 1;
2499         }
2500
2501         return (0);
2502 } /* }}} cna_init */
2503
2504 static int cna_read (user_data_t *ud) { /* {{{ */
2505         host_config_t *host;
2506         int status;
2507
2508         if ((ud == NULL) || (ud->data == NULL))
2509                 return (-1);
2510
2511         host = ud->data;
2512
2513         status = cna_init_host (host);
2514         if (status != 0)
2515                 return (status);
2516
2517         cna_query_wafl (host);
2518         cna_query_disk (host);
2519         cna_query_volume_perf (host);
2520         cna_query_volume_usage (host);
2521         cna_query_system (host);
2522
2523         return 0;
2524 } /* }}} int cna_read */
2525
2526 static int cna_config (oconfig_item_t *ci) { /* {{{ */
2527         int i;
2528         oconfig_item_t *item;
2529
2530         for (i = 0; i < ci->children_num; ++i) {
2531                 item = ci->children + i;
2532
2533                 if (strcasecmp(item->key, "Host") == 0)
2534                 {
2535                         host_config_t *host;
2536                         char cb_name[256];
2537                         struct timespec interval;
2538                         user_data_t ud;
2539
2540                         host = cna_config_host (item);
2541                         if (host == NULL)
2542                                 continue;
2543
2544                         ssnprintf (cb_name, sizeof (cb_name), "netapp-%s", host->name);
2545
2546                         memset (&interval, 0, sizeof (interval));
2547                         interval.tv_sec = host->interval;
2548
2549                         memset (&ud, 0, sizeof (ud));
2550                         ud.data = host;
2551                         ud.free_func = (void (*) (void *)) free_host_config;
2552
2553                         plugin_register_complex_read (cb_name,
2554                                         /* callback  = */ cna_read,
2555                                         /* interval  = */ (host->interval > 0) ? &interval : NULL,
2556                                         /* user data = */ &ud);
2557                         continue;
2558                 }
2559                 else /* if (item->key != "Host") */
2560                 {
2561                         WARNING("netapp plugin: Ignoring unknown config option \"%s\".", item->key);
2562                 }
2563         }
2564         return 0;
2565 } /* }}} int cna_config */
2566
2567 static int cna_shutdown (void) /* {{{ */
2568 {
2569         /* Clean up system resources and stuff. */
2570         na_shutdown ();
2571
2572         return (0);
2573 } /* }}} int cna_shutdown */
2574
2575 void module_register(void) {
2576         plugin_register_complex_config("netapp", cna_config);
2577         plugin_register_init("netapp", cna_init);
2578         plugin_register_shutdown("netapp", cna_shutdown);
2579 }
2580
2581 /* vim: set sw=2 ts=2 noet fdm=marker : */