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