2 * collectd - src/virt.c
3 * Copyright (C) 2006-2008 Red Hat Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License as published by the
7 * Free Software Foundation; only version 2 of the license is applicable.
9 * This program is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * General Public License for more details.
14 * You should have received a copy of the GNU General Public License along
15 * with this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Richard W.M. Jones <rjones@redhat.com>
20 * Przemyslaw Szczerbik <przemyslawx.szczerbik@intel.com>
26 #include "utils/common/common.h"
27 #include "utils/ignorelist/ignorelist.h"
28 #include "utils_complain.h"
30 #include <libgen.h> /* for basename(3) */
31 #include <libvirt/libvirt.h>
32 #include <libvirt/virterror.h>
33 #include <libxml/parser.h>
34 #include <libxml/tree.h>
35 #include <libxml/xpath.h>
36 #include <libxml/xpathInternals.h>
40 #define PLUGIN_NAME "virt"
42 /* Secure strcat macro assuring null termination. Parameter (n) is the size of
43 buffer (d), allowing this macro to be safe for static and dynamic buffers */
44 #define SSTRNCAT(d, s, n) \
46 size_t _l = strlen(d); \
47 sstrncpy((d) + _l, (s), (n)-_l); \
50 #ifdef LIBVIR_CHECK_VERSION
52 #if LIBVIR_CHECK_VERSION(0, 9, 2)
53 #define HAVE_DOM_REASON 1
56 #if LIBVIR_CHECK_VERSION(0, 9, 5)
57 #define HAVE_BLOCK_STATS_FLAGS 1
58 #define HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN 1
61 #if LIBVIR_CHECK_VERSION(0, 9, 10)
62 #define HAVE_DISK_ERR 1
65 #if LIBVIR_CHECK_VERSION(0, 9, 11)
66 #define HAVE_CPU_STATS 1
67 #define HAVE_DOM_STATE_PMSUSPENDED 1
68 #define HAVE_DOM_REASON_RUNNING_WAKEUP 1
72 virConnectListAllDomains() appeared in 0.10.2 (Sep 2012)
73 Note that LIBVIR_CHECK_VERSION appeared a year later (Dec 2013,
75 so in some systems which actually have virConnectListAllDomains()
78 #if LIBVIR_CHECK_VERSION(0, 10, 2)
79 #define HAVE_LIST_ALL_DOMAINS 1
82 #if LIBVIR_CHECK_VERSION(1, 0, 1)
83 #define HAVE_DOM_REASON_PAUSED_SNAPSHOT 1
86 #if LIBVIR_CHECK_VERSION(1, 1, 1)
87 #define HAVE_DOM_REASON_PAUSED_CRASHED 1
90 #if LIBVIR_CHECK_VERSION(1, 2, 9)
91 #define HAVE_JOB_STATS 1
94 #if LIBVIR_CHECK_VERSION(1, 2, 10)
95 #define HAVE_DOM_REASON_CRASHED 1
98 #if LIBVIR_CHECK_VERSION(1, 2, 11)
99 #define HAVE_FS_INFO 1
102 #if LIBVIR_CHECK_VERSION(1, 2, 15)
103 #define HAVE_DOM_REASON_PAUSED_STARTING_UP 1
106 #if LIBVIR_CHECK_VERSION(1, 3, 3)
107 #define HAVE_PERF_STATS 1
108 #define HAVE_DOM_REASON_POSTCOPY 1
111 #if LIBVIR_CHECK_VERSION(4, 10, 0)
112 #define HAVE_DOM_REASON_SHUTOFF_DAEMON 1
114 #endif /* LIBVIR_CHECK_VERSION */
116 /* structure used for aggregating notification-thread data*/
117 typedef struct virt_notif_thread_s {
118 pthread_t event_loop_tid;
119 int domain_event_cb_id;
120 pthread_mutex_t active_mutex; /* protects 'is_active' member access*/
122 } virt_notif_thread_t;
124 /* PersistentNotification is false by default */
125 static bool persistent_notification = false;
127 static bool report_block_devices = true;
128 static bool report_network_interfaces = true;
130 /* Thread used for handling libvirt notifications events */
131 static virt_notif_thread_t notif_thread;
133 const char *domain_states[] = {
134 [VIR_DOMAIN_NOSTATE] = "no state",
135 [VIR_DOMAIN_RUNNING] = "the domain is running",
136 [VIR_DOMAIN_BLOCKED] = "the domain is blocked on resource",
137 [VIR_DOMAIN_PAUSED] = "the domain is paused by user",
138 [VIR_DOMAIN_SHUTDOWN] = "the domain is being shut down",
139 [VIR_DOMAIN_SHUTOFF] = "the domain is shut off",
140 [VIR_DOMAIN_CRASHED] = "the domain is crashed",
141 #ifdef HAVE_DOM_STATE_PMSUSPENDED
142 [VIR_DOMAIN_PMSUSPENDED] =
143 "the domain is suspended by guest power management",
147 static int map_domain_event_to_state(int event) {
150 case VIR_DOMAIN_EVENT_STARTED:
151 ret = VIR_DOMAIN_RUNNING;
153 case VIR_DOMAIN_EVENT_SUSPENDED:
154 ret = VIR_DOMAIN_PAUSED;
156 case VIR_DOMAIN_EVENT_RESUMED:
157 ret = VIR_DOMAIN_RUNNING;
159 case VIR_DOMAIN_EVENT_STOPPED:
160 ret = VIR_DOMAIN_SHUTOFF;
162 case VIR_DOMAIN_EVENT_SHUTDOWN:
163 ret = VIR_DOMAIN_SHUTDOWN;
165 #ifdef HAVE_DOM_STATE_PMSUSPENDED
166 case VIR_DOMAIN_EVENT_PMSUSPENDED:
167 ret = VIR_DOMAIN_PMSUSPENDED;
170 #ifdef HAVE_DOM_REASON_CRASHED
171 case VIR_DOMAIN_EVENT_CRASHED:
172 ret = VIR_DOMAIN_CRASHED;
176 ret = VIR_DOMAIN_NOSTATE;
181 #ifdef HAVE_DOM_REASON
182 static int map_domain_event_detail_to_reason(int event, int detail) {
185 case VIR_DOMAIN_EVENT_STARTED:
187 case VIR_DOMAIN_EVENT_STARTED_BOOTED: /* Normal startup from boot */
188 ret = VIR_DOMAIN_RUNNING_BOOTED;
190 case VIR_DOMAIN_EVENT_STARTED_MIGRATED: /* Incoming migration from another
192 ret = VIR_DOMAIN_RUNNING_MIGRATED;
194 case VIR_DOMAIN_EVENT_STARTED_RESTORED: /* Restored from a state file */
195 ret = VIR_DOMAIN_RUNNING_RESTORED;
197 case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT: /* Restored from snapshot */
198 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
200 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
201 case VIR_DOMAIN_EVENT_STARTED_WAKEUP: /* Started due to wakeup event */
202 ret = VIR_DOMAIN_RUNNING_WAKEUP;
206 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
209 case VIR_DOMAIN_EVENT_SUSPENDED:
211 case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED: /* Normal suspend due to admin
213 ret = VIR_DOMAIN_PAUSED_USER;
215 case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED: /* Suspended for offline
217 ret = VIR_DOMAIN_PAUSED_MIGRATION;
219 case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR: /* Suspended due to a disk I/O
221 ret = VIR_DOMAIN_PAUSED_IOERROR;
223 case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG: /* Suspended due to a watchdog
225 ret = VIR_DOMAIN_PAUSED_WATCHDOG;
227 case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED: /* Restored from paused state
229 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
231 case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT: /* Restored from paused
233 ret = VIR_DOMAIN_PAUSED_FROM_SNAPSHOT;
235 case VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR: /* Suspended after failure during
237 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
239 #ifdef HAVE_DOM_REASON_POSTCOPY
240 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY: /* Suspended for post-copy
242 ret = VIR_DOMAIN_PAUSED_POSTCOPY;
244 case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED: /* Suspended after failed
246 ret = VIR_DOMAIN_PAUSED_POSTCOPY_FAILED;
250 ret = VIR_DOMAIN_PAUSED_UNKNOWN;
253 case VIR_DOMAIN_EVENT_RESUMED:
255 case VIR_DOMAIN_EVENT_RESUMED_UNPAUSED: /* Normal resume due to admin
257 ret = VIR_DOMAIN_RUNNING_UNPAUSED;
259 case VIR_DOMAIN_EVENT_RESUMED_MIGRATED: /* Resumed for completion of
261 ret = VIR_DOMAIN_RUNNING_MIGRATED;
263 case VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT: /* Resumed from snapshot */
264 ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT;
266 #ifdef HAVE_DOM_REASON_POSTCOPY
267 case VIR_DOMAIN_EVENT_RESUMED_POSTCOPY: /* Resumed, but migration is still
268 running in post-copy mode */
269 ret = VIR_DOMAIN_RUNNING_POSTCOPY;
273 ret = VIR_DOMAIN_RUNNING_UNKNOWN;
276 case VIR_DOMAIN_EVENT_STOPPED:
278 case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN: /* Normal shutdown */
279 ret = VIR_DOMAIN_SHUTOFF_SHUTDOWN;
281 case VIR_DOMAIN_EVENT_STOPPED_DESTROYED: /* Forced poweroff from host */
282 ret = VIR_DOMAIN_SHUTOFF_DESTROYED;
284 case VIR_DOMAIN_EVENT_STOPPED_CRASHED: /* Guest crashed */
285 ret = VIR_DOMAIN_SHUTOFF_CRASHED;
287 case VIR_DOMAIN_EVENT_STOPPED_MIGRATED: /* Migrated off to another host */
288 ret = VIR_DOMAIN_SHUTOFF_MIGRATED;
290 case VIR_DOMAIN_EVENT_STOPPED_SAVED: /* Saved to a state file */
291 ret = VIR_DOMAIN_SHUTOFF_SAVED;
293 case VIR_DOMAIN_EVENT_STOPPED_FAILED: /* Host emulator/mgmt failed */
294 ret = VIR_DOMAIN_SHUTOFF_FAILED;
296 case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT: /* Offline snapshot loaded */
297 ret = VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT;
300 ret = VIR_DOMAIN_SHUTOFF_UNKNOWN;
303 case VIR_DOMAIN_EVENT_SHUTDOWN:
305 case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED: /* Guest finished shutdown
307 #ifdef LIBVIR_CHECK_VERSION
308 #if LIBVIR_CHECK_VERSION(3, 4, 0)
309 case VIR_DOMAIN_EVENT_SHUTDOWN_GUEST: /* Domain finished shutting down after
310 request from the guest itself (e.g.
311 hardware-specific action) */
312 case VIR_DOMAIN_EVENT_SHUTDOWN_HOST: /* Domain finished shutting down after
313 request from the host (e.g. killed
317 ret = VIR_DOMAIN_SHUTDOWN_USER;
320 ret = VIR_DOMAIN_SHUTDOWN_UNKNOWN;
323 #ifdef HAVE_DOM_STATE_PMSUSPENDED
324 case VIR_DOMAIN_EVENT_PMSUSPENDED:
326 case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY: /* Guest was PM suspended to
328 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
330 case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK: /* Guest was PM suspended to disk */
331 ret = VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN;
334 ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN;
338 case VIR_DOMAIN_EVENT_CRASHED:
340 case VIR_DOMAIN_EVENT_CRASHED_PANICKED: /* Guest was panicked */
341 ret = VIR_DOMAIN_CRASHED_PANICKED;
344 ret = VIR_DOMAIN_CRASHED_UNKNOWN;
348 ret = VIR_DOMAIN_NOSTATE_UNKNOWN;
353 #define DOMAIN_STATE_REASON_MAX_SIZE 20
354 const char *domain_reasons[][DOMAIN_STATE_REASON_MAX_SIZE] = {
355 [VIR_DOMAIN_NOSTATE][VIR_DOMAIN_NOSTATE_UNKNOWN] =
356 "the reason is unknown",
358 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] =
359 "the reason is unknown",
360 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] =
361 "normal startup from boot",
362 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] =
363 "migrated from another host",
364 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] =
365 "restored from a state file",
366 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] =
367 "restored from snapshot",
368 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] =
369 "returned from paused state",
370 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] =
371 "returned from migration",
372 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] =
373 "returned from failed save process",
374 #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP
375 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] =
376 "returned from pmsuspended due to wakeup event",
378 #ifdef HAVE_DOM_REASON_CRASHED
379 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] =
380 "resumed from crashed",
382 #ifdef HAVE_DOM_REASON_POSTCOPY
383 [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_POSTCOPY] =
384 "running in post-copy migration mode",
386 [VIR_DOMAIN_BLOCKED][VIR_DOMAIN_BLOCKED_UNKNOWN] =
387 "the reason is unknown",
389 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] =
390 "the reason is unknown",
391 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request",
392 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] =
393 "paused for offline migration",
394 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save",
395 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] =
396 "paused for offline core dump",
397 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] =
398 "paused due to a disk I/O error",
399 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] =
400 "paused due to a watchdog event",
401 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] =
402 "paused after restoring from snapshot",
403 #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN
404 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] =
405 "paused during shutdown process",
407 #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT
408 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] =
409 "paused while creating a snapshot",
411 #ifdef HAVE_DOM_REASON_PAUSED_CRASHED
412 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] =
413 "paused due to a guest crash",
415 #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP
416 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] =
417 "the domain is being started",
419 #ifdef HAVE_DOM_REASON_POSTCOPY
420 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] =
421 "paused for post-copy migration",
422 [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] =
423 "paused after failed post-copy",
425 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] =
426 "the reason is unknown",
427 [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] =
428 "shutting down on user request",
430 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] =
431 "the reason is unknown",
432 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown",
433 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff",
434 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed",
435 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] =
436 "migrated to another host",
437 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file",
438 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] =
439 "domain failed to start",
440 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] =
441 "restored from a snapshot which was taken while domain was shutoff",
442 #ifdef HAVE_DOM_REASON_SHUTOFF_DAEMON
443 [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DAEMON] =
444 "daemon decides to kill domain during reconnection processing",
447 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_UNKNOWN] =
448 "the reason is unknown",
449 #ifdef VIR_DOMAIN_CRASHED_PANICKED
450 [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_PANICKED] = "domain panicked",
453 #ifdef HAVE_DOM_STATE_PMSUSPENDED
454 [VIR_DOMAIN_PMSUSPENDED][VIR_DOMAIN_PMSUSPENDED_UNKNOWN] =
455 "the reason is unknown",
458 #endif /* HAVE_DOM_REASON */
460 #define NANOSEC_IN_SEC 1e9
462 #define GET_STATS(_f, _name, ...) \
464 status = _f(__VA_ARGS__); \
466 ERROR(PLUGIN_NAME " plugin: Failed to get " _name); \
470 static virConnectPtr conn;
471 static char *conn_string;
472 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
474 /* Node information required for %CPU */
475 static virNodeInfo nodeinfo;
477 /* Seconds between list refreshes, 0 disables completely. */
478 static int interval = 60;
480 /* List of domains, if specified. */
481 static ignorelist_t *il_domains;
482 /* List of block devices, if specified. */
483 static ignorelist_t *il_block_devices;
484 /* List of network interface devices, if specified. */
485 static ignorelist_t *il_interface_devices;
487 static int ignore_device_match(ignorelist_t *, const char *domname,
488 const char *devpath);
490 /* Actual list of block devices found on last refresh. */
491 struct block_device {
492 virDomainPtr dom; /* domain */
493 char *path; /* name of block device */
494 bool has_source; /* information whether source is defined or not */
497 /* Actual list of network interfaces found on last refresh. */
498 struct interface_device {
499 virDomainPtr dom; /* domain */
500 char *path; /* name of interface device */
501 char *address; /* mac address of interface device */
502 char *number; /* interface device number */
505 typedef struct domain_s {
511 struct lv_read_state {
512 /* Actual list of domains found on last refresh. */
516 struct block_device *block_devices;
517 int nr_block_devices;
519 struct interface_device *interface_devices;
520 int nr_interface_devices;
523 static void free_domains(struct lv_read_state *state);
524 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
527 static void free_block_devices(struct lv_read_state *state);
528 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
529 const char *path, bool has_source);
531 static void free_interface_devices(struct lv_read_state *state);
532 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
533 const char *path, const char *address,
534 unsigned int number);
536 #define METADATA_VM_PARTITION_URI "http://ovirt.org/ovirtmap/tag/1.0"
537 #define METADATA_VM_PARTITION_ELEMENT "tag"
538 #define METADATA_VM_PARTITION_PREFIX "ovirtmap"
540 #define BUFFER_MAX_LEN 256
541 #define PARTITION_TAG_MAX_LEN 32
543 struct lv_read_instance {
544 struct lv_read_state read_state;
545 char tag[PARTITION_TAG_MAX_LEN];
549 struct lv_user_data {
550 struct lv_read_instance inst;
554 #define NR_INSTANCES_DEFAULT 1
555 #define NR_INSTANCES_MAX 128
556 static int nr_instances = NR_INSTANCES_DEFAULT;
557 static struct lv_user_data lv_read_user_data[NR_INSTANCES_MAX];
559 /* HostnameFormat. */
560 #define HF_MAX_FIELDS 4
562 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid, hf_metadata };
564 static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name};
566 /* PluginInstanceFormat */
567 #define PLGINST_MAX_FIELDS 3
576 static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = {
579 /* HostnameMetadataNS && HostnameMetadataXPath */
580 static char *hm_xpath;
583 /* BlockDeviceFormat */
584 enum bd_field { target, source };
586 /* InterfaceFormat. */
587 enum if_field { if_address, if_name, if_number };
590 #define EX_STATS_MAX_FIELDS 15
593 ex_stats_disk = 1 << 0,
594 ex_stats_pcpu = 1 << 1,
595 ex_stats_cpu_util = 1 << 2,
596 ex_stats_domain_state = 1 << 3,
597 #ifdef HAVE_PERF_STATS
598 ex_stats_perf = 1 << 4,
600 ex_stats_vcpupin = 1 << 5,
602 ex_stats_disk_err = 1 << 6,
605 ex_stats_fs_info = 1 << 7,
607 #ifdef HAVE_JOB_STATS
608 ex_stats_job_stats_completed = 1 << 8,
609 ex_stats_job_stats_background = 1 << 9,
611 ex_stats_disk_allocation = 1 << 10,
612 ex_stats_disk_capacity = 1 << 11,
613 ex_stats_disk_physical = 1 << 12,
614 ex_stats_memory = 1 << 13,
615 ex_stats_vcpu = 1 << 14
618 static unsigned int extra_stats = ex_stats_none;
620 struct ex_stats_item {
624 static const struct ex_stats_item ex_stats_table[] = {
625 {"disk", ex_stats_disk},
626 {"pcpu", ex_stats_pcpu},
627 {"cpu_util", ex_stats_cpu_util},
628 {"domain_state", ex_stats_domain_state},
629 #ifdef HAVE_PERF_STATS
630 {"perf", ex_stats_perf},
632 {"vcpupin", ex_stats_vcpupin},
634 {"disk_err", ex_stats_disk_err},
637 {"fs_info", ex_stats_fs_info},
639 #ifdef HAVE_JOB_STATS
640 {"job_stats_completed", ex_stats_job_stats_completed},
641 {"job_stats_background", ex_stats_job_stats_background},
643 {"disk_allocation", ex_stats_disk_allocation},
644 {"disk_capacity", ex_stats_disk_capacity},
645 {"disk_physical", ex_stats_disk_physical},
646 {"memory", ex_stats_memory},
647 {"vcpu", ex_stats_vcpu},
648 {NULL, ex_stats_none},
651 /* BlockDeviceFormatBasename */
652 static bool blockdevice_format_basename;
653 static enum bd_field blockdevice_format = target;
654 static enum if_field interface_format = if_name;
656 /* Time that we last refreshed. */
657 static time_t last_refresh = (time_t)0;
659 static int refresh_lists(struct lv_read_instance *inst);
660 static int register_event_impl(void);
661 static int start_event_loop(virt_notif_thread_t *thread_data);
663 struct lv_block_stats {
664 virDomainBlockStatsStruct bi;
666 long long rd_total_times;
667 long long wr_total_times;
670 long long fl_total_times;
673 static void init_block_stats(struct lv_block_stats *bstats) {
677 bstats->bi.rd_req = -1;
678 bstats->bi.wr_req = -1;
679 bstats->bi.rd_bytes = -1;
680 bstats->bi.wr_bytes = -1;
682 bstats->rd_total_times = -1;
683 bstats->wr_total_times = -1;
685 bstats->fl_total_times = -1;
688 static void init_block_info(virDomainBlockInfoPtr binfo) {
689 binfo->allocation = -1;
690 binfo->capacity = -1;
691 binfo->physical = -1;
694 #ifdef HAVE_BLOCK_STATS_FLAGS
696 #define GET_BLOCK_STATS_VALUE(NAME, FIELD) \
697 if (!strcmp(param[i].field, NAME)) { \
698 bstats->FIELD = param[i].value.l; \
702 static int get_block_stats(struct lv_block_stats *bstats,
703 virTypedParameterPtr param, int nparams) {
704 if (bstats == NULL || param == NULL)
707 for (int i = 0; i < nparams; ++i) {
708 /* ignore type. Everything must be LLONG anyway. */
709 GET_BLOCK_STATS_VALUE("rd_operations", bi.rd_req);
710 GET_BLOCK_STATS_VALUE("wr_operations", bi.wr_req);
711 GET_BLOCK_STATS_VALUE("rd_bytes", bi.rd_bytes);
712 GET_BLOCK_STATS_VALUE("wr_bytes", bi.wr_bytes);
713 GET_BLOCK_STATS_VALUE("rd_total_times", rd_total_times);
714 GET_BLOCK_STATS_VALUE("wr_total_times", wr_total_times);
715 GET_BLOCK_STATS_VALUE("flush_operations", fl_req);
716 GET_BLOCK_STATS_VALUE("flush_total_times", fl_total_times);
722 #undef GET_BLOCK_STATS_VALUE
724 #endif /* HAVE_BLOCK_STATS_FLAGS */
726 /* ERROR(...) macro for virterrors. */
727 #define VIRT_ERROR(conn, s) \
730 err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \
732 ERROR(PLUGIN_NAME " plugin: %s failed: %s", (s), err->message); \
735 static char *metadata_get_hostname(virDomainPtr dom) {
736 const char *xpath_str = NULL;
737 if (hm_xpath == NULL)
738 xpath_str = "/instance/name/text()";
740 xpath_str = hm_xpath;
742 const char *namespace = NULL;
744 namespace = "http://openstack.org/xmlns/libvirt/nova/1.0";
749 char *metadata_str = virDomainGetMetadata(
750 dom, VIR_DOMAIN_METADATA_ELEMENT, namespace, VIR_DOMAIN_AFFECT_CURRENT);
751 if (metadata_str == NULL) {
755 char *hostname = NULL;
756 xmlXPathContextPtr xpath_ctx = NULL;
757 xmlXPathObjectPtr xpath_obj = NULL;
758 xmlNodePtr xml_node = NULL;
761 xmlReadDoc((xmlChar *)metadata_str, NULL, NULL, XML_PARSE_NONET);
762 if (xml_doc == NULL) {
763 ERROR(PLUGIN_NAME " plugin: xmlReadDoc failed to read metadata");
767 xpath_ctx = xmlXPathNewContext(xml_doc);
768 if (xpath_ctx == NULL) {
769 ERROR(PLUGIN_NAME " plugin: xmlXPathNewContext(%s) failed for metadata",
773 xpath_obj = xmlXPathEval((xmlChar *)xpath_str, xpath_ctx);
774 if (xpath_obj == NULL) {
775 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed for metadata",
780 if (xpath_obj->type != XPATH_NODESET) {
781 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
782 "(wanted %d) for metadata",
783 xpath_str, xpath_obj->type, XPATH_NODESET);
787 // TODO(sileht): We can support || operator by looping on nodes here
788 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
789 WARNING(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
790 "expected=1 for metadata",
792 (xpath_obj->nodesetval == NULL) ? 0
793 : xpath_obj->nodesetval->nodeNr);
797 xml_node = xpath_obj->nodesetval->nodeTab[0];
798 if (xml_node->type == XML_TEXT_NODE) {
799 hostname = strdup((const char *)xml_node->content);
800 } else if (xml_node->type == XML_ATTRIBUTE_NODE) {
801 hostname = strdup((const char *)xml_node->children->content);
803 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unsupported node type %d",
804 xpath_str, xml_node->type);
808 if (hostname == NULL) {
809 ERROR(PLUGIN_NAME " plugin: strdup(%s) hostname failed", xpath_str);
815 xmlXPathFreeObject(xpath_obj);
817 xmlXPathFreeContext(xpath_ctx);
824 static void init_value_list(value_list_t *vl, virDomainPtr dom) {
826 char uuid[VIR_UUID_STRING_BUFLEN];
828 sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin));
832 /* Construct the hostname field according to HostnameFormat. */
833 for (int i = 0; i < HF_MAX_FIELDS; ++i) {
834 if (hostname_format[i] == hf_none)
838 SSTRNCAT(vl->host, ":", sizeof(vl->host));
840 switch (hostname_format[i]) {
844 SSTRNCAT(vl->host, hostname_g, sizeof(vl->host));
847 name = virDomainGetName(dom);
849 SSTRNCAT(vl->host, name, sizeof(vl->host));
852 if (virDomainGetUUIDString(dom, uuid) == 0)
853 SSTRNCAT(vl->host, uuid, sizeof(vl->host));
856 name = metadata_get_hostname(dom);
858 SSTRNCAT(vl->host, name, sizeof(vl->host));
863 /* Construct the plugin instance field according to PluginInstanceFormat. */
864 for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) {
865 if (plugin_instance_format[i] == plginst_none)
869 SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance));
871 switch (plugin_instance_format[i]) {
875 name = virDomainGetName(dom);
877 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
880 if (virDomainGetUUIDString(dom, uuid) == 0)
881 SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance));
883 case plginst_metadata:
884 name = metadata_get_hostname(dom);
886 SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance));
891 } /* void init_value_list */
893 static int init_notif(notification_t *notif, const virDomainPtr domain,
894 int severity, const char *msg, const char *type,
895 const char *type_instance) {
896 value_list_t vl = VALUE_LIST_INIT;
899 ERROR(PLUGIN_NAME " plugin: init_notif: NULL pointer");
903 init_value_list(&vl, domain);
904 notification_init(notif, severity, msg, vl.host, vl.plugin,
905 vl.plugin_instance, type, type_instance);
906 notif->time = cdtime();
910 static void submit_notif(const virDomainPtr domain, int severity,
911 const char *msg, const char *type,
912 const char *type_instance) {
913 notification_t notif;
915 init_notif(¬if, domain, severity, msg, type, type_instance);
916 plugin_dispatch_notification(¬if);
918 plugin_notification_meta_free(notif.meta);
921 static void submit(virDomainPtr dom, char const *type,
922 char const *type_instance, value_t *values,
924 value_list_t vl = VALUE_LIST_INIT;
925 init_value_list(&vl, dom);
928 vl.values_len = values_len;
930 sstrncpy(vl.type, type, sizeof(vl.type));
931 if (type_instance != NULL)
932 sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance));
934 plugin_dispatch_values(&vl);
937 static void memory_submit(virDomainPtr dom, gauge_t value) {
938 submit(dom, "memory", "total", &(value_t){.gauge = value}, 1);
941 static void memory_stats_submit(gauge_t value, virDomainPtr dom,
943 static const char *tags[] = {"swap_in", "swap_out", "major_fault",
944 "minor_fault", "unused", "available",
945 "actual_balloon", "rss", "usable",
946 "last_update", "disk_caches"};
948 if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) {
949 ERROR("virt plugin: Array index out of bounds: tag_index = %d", tag_index);
953 submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1);
956 static void submit_derive2(const char *type, derive_t v0, derive_t v1,
957 virDomainPtr dom, const char *devname) {
959 {.derive = v0}, {.derive = v1},
962 submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values));
963 } /* void submit_derive2 */
965 static double cpu_ns_to_percent(unsigned int node_cpus,
966 unsigned long long cpu_time_old,
967 unsigned long long cpu_time_new) {
968 double percent = 0.0;
969 unsigned long long cpu_time_diff = 0;
970 double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval());
972 if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) {
973 cpu_time_diff = cpu_time_new - cpu_time_old;
974 percent = ((double)(100 * cpu_time_diff)) /
975 (time_diff_sec * node_cpus * NANOSEC_IN_SEC);
978 DEBUG(PLUGIN_NAME " plugin: node_cpus=%u cpu_time_old=%" PRIu64
979 " cpu_time_new=%" PRIu64 "cpu_time_diff=%" PRIu64
980 " time_diff_sec=%f percent=%f",
981 node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new,
982 (uint64_t)cpu_time_diff, time_diff_sec, percent);
987 static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) {
992 if (extra_stats & ex_stats_cpu_util) {
993 /* Computing %CPU requires 2 samples of cpuTime */
994 if (dom->info.cpuTime != 0 && cpuTime_new != 0) {
996 submit(dom->ptr, "percent", "virt_cpu_total",
997 &(value_t){.gauge = cpu_ns_to_percent(
998 nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)},
1003 submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new},
1007 static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr,
1009 char type_instance[DATA_MAX_NAME_LEN];
1011 snprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr);
1012 submit(dom, type, type_instance, &(value_t){.derive = value}, 1);
1015 static void disk_block_stats_submit(struct lv_block_stats *bstats,
1016 virDomainPtr dom, const char *dev,
1017 virDomainBlockInfoPtr binfo) {
1018 char *dev_copy = strdup(dev);
1019 const char *type_instance = dev_copy;
1024 if (blockdevice_format_basename && blockdevice_format == source)
1025 type_instance = basename(dev_copy);
1027 if (!type_instance) {
1032 char flush_type_instance[DATA_MAX_NAME_LEN];
1033 snprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s",
1036 if ((bstats->bi.rd_req != -1) && (bstats->bi.wr_req != -1))
1037 submit_derive2("disk_ops", (derive_t)bstats->bi.rd_req,
1038 (derive_t)bstats->bi.wr_req, dom, type_instance);
1040 if ((bstats->bi.rd_bytes != -1) && (bstats->bi.wr_bytes != -1))
1041 submit_derive2("disk_octets", (derive_t)bstats->bi.rd_bytes,
1042 (derive_t)bstats->bi.wr_bytes, dom, type_instance);
1044 if (extra_stats & ex_stats_disk) {
1045 if ((bstats->rd_total_times != -1) && (bstats->wr_total_times != -1))
1046 submit_derive2("disk_time", (derive_t)bstats->rd_total_times,
1047 (derive_t)bstats->wr_total_times, dom, type_instance);
1049 if (bstats->fl_req != -1)
1050 submit(dom, "total_requests", flush_type_instance,
1051 &(value_t){.derive = (derive_t)bstats->fl_req}, 1);
1052 if (bstats->fl_total_times != -1) {
1053 derive_t value = bstats->fl_total_times / 1000; // ns -> ms
1054 submit(dom, "total_time_in_ms", flush_type_instance,
1055 &(value_t){.derive = value}, 1);
1059 /* disk_allocation, disk_capacity and disk_physical are stored only
1060 * if corresponding extrastats are set in collectd configuration file */
1061 if ((extra_stats & ex_stats_disk_allocation) && binfo->allocation != -1)
1062 submit(dom, "disk_allocation", type_instance,
1063 &(value_t){.gauge = (gauge_t)binfo->allocation}, 1);
1065 if ((extra_stats & ex_stats_disk_capacity) && binfo->capacity != -1)
1066 submit(dom, "disk_capacity", type_instance,
1067 &(value_t){.gauge = (gauge_t)binfo->capacity}, 1);
1069 if ((extra_stats & ex_stats_disk_physical) && binfo->physical != -1)
1070 submit(dom, "disk_physical", type_instance,
1071 &(value_t){.gauge = (gauge_t)binfo->physical}, 1);
1077 * Function for parsing ExtraStats configuration options.
1078 * Result of parsing is stored under 'out_parsed_flags' pointer.
1080 * Returns 0 in case of success and 1 in case of parsing error
1082 static int parse_ex_stats_flags(unsigned int *out_parsed_flags, char **exstats,
1084 unsigned int ex_stats_flags = ex_stats_none;
1086 assert(out_parsed_flags != NULL);
1088 for (int i = 0; i < numexstats; i++) {
1089 for (int j = 0; ex_stats_table[j].name != NULL; j++) {
1090 if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) {
1091 DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'",
1092 ex_stats_table[j].name);
1093 ex_stats_flags |= ex_stats_table[j].flag;
1097 if (ex_stats_table[j + 1].name == NULL) {
1098 ERROR(PLUGIN_NAME " plugin: Unmatched ExtraStats option: %s",
1105 *out_parsed_flags = ex_stats_flags;
1109 static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) {
1110 if ((state < 0) || ((size_t)state >= STATIC_ARRAY_SIZE(domain_states))) {
1111 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: state=%d", state);
1115 char msg[DATA_MAX_NAME_LEN];
1116 const char *state_str = domain_states[state];
1117 #ifdef HAVE_DOM_REASON
1119 ((size_t)reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) {
1120 ERROR(PLUGIN_NAME " plugin: Array index out of bounds: reason=%d", reason);
1124 const char *reason_str = domain_reasons[state][reason];
1125 /* Array size for domain reasons is fixed, but different domain states can
1126 * have different number of reasons. We need to check if reason was
1127 * successfully parsed */
1129 ERROR(PLUGIN_NAME " plugin: Invalid reason (%d) for domain state: %s",
1134 const char *reason_str = "N/A";
1137 snprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str,
1142 case VIR_DOMAIN_NOSTATE:
1143 case VIR_DOMAIN_RUNNING:
1144 case VIR_DOMAIN_SHUTDOWN:
1145 case VIR_DOMAIN_SHUTOFF:
1146 severity = NOTIF_OKAY;
1148 case VIR_DOMAIN_BLOCKED:
1149 case VIR_DOMAIN_PAUSED:
1150 #ifdef DOM_STATE_PMSUSPENDED
1151 case VIR_DOMAIN_PMSUSPENDED:
1153 severity = NOTIF_WARNING;
1155 case VIR_DOMAIN_CRASHED:
1156 severity = NOTIF_FAILURE;
1159 ERROR(PLUGIN_NAME " plugin: Unrecognized domain state (%d)", state);
1162 submit_notif(dom, severity, msg, "domain_state", NULL);
1165 static int lv_init_ignorelists() {
1166 if (il_domains == NULL)
1167 il_domains = ignorelist_create(1);
1168 if (il_block_devices == NULL)
1169 il_block_devices = ignorelist_create(1);
1170 if (il_interface_devices == NULL)
1171 il_interface_devices = ignorelist_create(1);
1173 if (!il_domains || !il_block_devices || !il_interface_devices)
1179 /* Validates config option that may take multiple strings arguments.
1180 * Returns 0 on success, -1 otherwise */
1181 static int check_config_multiple_string_entry(const oconfig_item_t *ci) {
1183 ERROR(PLUGIN_NAME " plugin: ci oconfig_item can't be NULL");
1187 if (ci->values_num < 1) {
1189 " plugin: the '%s' option requires at least one string argument",
1194 for (int i = 0; i < ci->values_num; ++i) {
1195 if (ci->values[i].type != OCONFIG_TYPE_STRING) {
1197 " plugin: one of the '%s' options is not a valid string",
1206 static int lv_config(oconfig_item_t *ci) {
1207 if (lv_init_ignorelists() != 0) {
1208 ERROR(PLUGIN_NAME " plugin: lv_init_ignorelist failed.");
1212 for (int i = 0; i < ci->children_num; ++i) {
1213 oconfig_item_t *c = ci->children + i;
1215 if (strcasecmp(c->key, "Connection") == 0) {
1216 if (cf_util_get_string(c, &conn_string) != 0 || conn_string == NULL)
1220 } else if (strcasecmp(c->key, "RefreshInterval") == 0) {
1221 if (cf_util_get_int(c, &interval) != 0)
1225 } else if (strcasecmp(c->key, "Domain") == 0) {
1226 char *domain_name = NULL;
1227 if (cf_util_get_string(c, &domain_name) != 0)
1230 if (ignorelist_add(il_domains, domain_name)) {
1231 ERROR(PLUGIN_NAME " plugin: Adding '%s' to domain-ignorelist failed",
1239 } else if (strcasecmp(c->key, "BlockDevice") == 0) {
1240 char *device_name = NULL;
1241 if (cf_util_get_string(c, &device_name) != 0)
1244 if (ignorelist_add(il_block_devices, device_name) != 0) {
1246 " plugin: Adding '%s' to block-device-ignorelist failed",
1254 } else if (strcasecmp(c->key, "BlockDeviceFormat") == 0) {
1255 char *device_format = NULL;
1256 if (cf_util_get_string(c, &device_format) != 0)
1259 if (strcasecmp(device_format, "target") == 0)
1260 blockdevice_format = target;
1261 else if (strcasecmp(device_format, "source") == 0)
1262 blockdevice_format = source;
1264 ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s",
1266 sfree(device_format);
1270 sfree(device_format);
1272 } else if (strcasecmp(c->key, "BlockDeviceFormatBasename") == 0) {
1273 if (cf_util_get_boolean(c, &blockdevice_format_basename) != 0)
1277 } else if (strcasecmp(c->key, "InterfaceDevice") == 0) {
1278 char *interface_name = NULL;
1279 if (cf_util_get_string(c, &interface_name) != 0)
1282 if (ignorelist_add(il_interface_devices, interface_name)) {
1283 ERROR(PLUGIN_NAME " plugin: Adding '%s' to interface-ignorelist failed",
1285 sfree(interface_name);
1289 sfree(interface_name);
1291 } else if (strcasecmp(c->key, "IgnoreSelected") == 0) {
1292 bool ignore_selected = false;
1293 if (cf_util_get_boolean(c, &ignore_selected) != 0)
1296 if (ignore_selected) {
1297 ignorelist_set_invert(il_domains, 0);
1298 ignorelist_set_invert(il_block_devices, 0);
1299 ignorelist_set_invert(il_interface_devices, 0);
1301 ignorelist_set_invert(il_domains, 1);
1302 ignorelist_set_invert(il_block_devices, 1);
1303 ignorelist_set_invert(il_interface_devices, 1);
1307 } else if (strcasecmp(c->key, "HostnameMetadataNS") == 0) {
1308 if (cf_util_get_string(c, &hm_ns) != 0)
1312 } else if (strcasecmp(c->key, "HostnameMetadataXPath") == 0) {
1313 if (cf_util_get_string(c, &hm_xpath) != 0)
1317 } else if (strcasecmp(c->key, "HostnameFormat") == 0) {
1318 /* this option can take multiple strings arguments in one config line*/
1319 if (check_config_multiple_string_entry(c) != 0) {
1320 ERROR(PLUGIN_NAME " plugin: Could not get 'HostnameFormat' parameter");
1324 const int params_num = c->values_num;
1325 for (int i = 0; i < params_num; ++i) {
1326 const char *param_name = c->values[i].value.string;
1327 if (strcasecmp(param_name, "hostname") == 0)
1328 hostname_format[i] = hf_hostname;
1329 else if (strcasecmp(param_name, "name") == 0)
1330 hostname_format[i] = hf_name;
1331 else if (strcasecmp(param_name, "uuid") == 0)
1332 hostname_format[i] = hf_uuid;
1333 else if (strcasecmp(param_name, "metadata") == 0)
1334 hostname_format[i] = hf_metadata;
1336 ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s",
1342 for (int i = params_num; i < HF_MAX_FIELDS; ++i)
1343 hostname_format[i] = hf_none;
1346 } else if (strcasecmp(c->key, "PluginInstanceFormat") == 0) {
1347 /* this option can handle list of string parameters in one line*/
1348 if (check_config_multiple_string_entry(c) != 0) {
1350 " plugin: Could not get 'PluginInstanceFormat' parameter");
1354 const int params_num = c->values_num;
1355 for (int i = 0; i < params_num; ++i) {
1356 const char *param_name = c->values[i].value.string;
1357 if (strcasecmp(param_name, "none") == 0) {
1358 plugin_instance_format[i] = plginst_none;
1360 } else if (strcasecmp(param_name, "name") == 0)
1361 plugin_instance_format[i] = plginst_name;
1362 else if (strcasecmp(param_name, "uuid") == 0)
1363 plugin_instance_format[i] = plginst_uuid;
1364 else if (strcasecmp(param_name, "metadata") == 0)
1365 plugin_instance_format[i] = plginst_metadata;
1367 ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s",
1374 for (int i = params_num; i < PLGINST_MAX_FIELDS; ++i)
1375 plugin_instance_format[i] = plginst_none;
1378 } else if (strcasecmp(c->key, "InterfaceFormat") == 0) {
1379 char *format = NULL;
1380 if (cf_util_get_string(c, &format) != 0)
1383 if (strcasecmp(format, "name") == 0)
1384 interface_format = if_name;
1385 else if (strcasecmp(format, "address") == 0)
1386 interface_format = if_address;
1387 else if (strcasecmp(format, "number") == 0)
1388 interface_format = if_number;
1390 ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", format);
1397 } else if (strcasecmp(c->key, "Instances") == 0) {
1398 if (cf_util_get_int(c, &nr_instances) != 0)
1401 if (nr_instances <= 0) {
1402 ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense.");
1405 if (nr_instances > NR_INSTANCES_MAX) {
1406 ERROR(PLUGIN_NAME " plugin: Instances=%i > NR_INSTANCES_MAX=%i"
1407 " use a lower setting or recompile the plugin.",
1408 nr_instances, NR_INSTANCES_MAX);
1412 DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances);
1414 } else if (strcasecmp(c->key, "ExtraStats") == 0) {
1415 char *ex_str = NULL;
1417 if (cf_util_get_string(c, &ex_str) != 0)
1420 char *exstats[EX_STATS_MAX_FIELDS];
1421 int numexstats = strsplit(ex_str, exstats, STATIC_ARRAY_SIZE(exstats));
1422 int status = parse_ex_stats_flags(&extra_stats, exstats, numexstats);
1425 ERROR(PLUGIN_NAME " plugin: parsing 'ExtraStats' option failed");
1429 #ifdef HAVE_JOB_STATS
1430 if ((extra_stats & ex_stats_job_stats_completed) &&
1431 (extra_stats & ex_stats_job_stats_background)) {
1432 ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one "
1433 "type of job statistics can be collected at the same "
1439 /* ExtraStats parsed successfully */
1441 } else if (strcasecmp(c->key, "PersistentNotification") == 0) {
1442 if (cf_util_get_boolean(c, &persistent_notification) != 0)
1446 } else if (strcasecmp(c->key, "ReportBlockDevices") == 0) {
1447 if (cf_util_get_boolean(c, &report_block_devices) != 0)
1451 } else if (strcasecmp(c->key, "ReportNetworkInterfaces") == 0) {
1452 if (cf_util_get_boolean(c, &report_network_interfaces) != 0)
1457 /* Unrecognised option. */
1458 ERROR(PLUGIN_NAME " plugin: Unrecognized option: '%s'", c->key);
1466 static int lv_connect(void) {
1468 /* event implementation must be registered before connection is opened */
1469 if (!persistent_notification)
1470 if (register_event_impl() != 0)
1473 /* `conn_string == NULL' is acceptable */
1475 /* virDomainGetFSInfo requires full read-write access connection */
1476 if (extra_stats & ex_stats_fs_info)
1477 conn = virConnectOpen(conn_string);
1480 conn = virConnectOpenReadOnly(conn_string);
1482 c_complain(LOG_ERR, &conn_complain,
1483 PLUGIN_NAME " plugin: Unable to connect: "
1484 "virConnectOpen failed.");
1487 int status = virNodeGetInfo(conn, &nodeinfo);
1489 ERROR(PLUGIN_NAME " plugin: virNodeGetInfo failed");
1490 virConnectClose(conn);
1495 if (!persistent_notification)
1496 if (start_event_loop(¬if_thread) != 0) {
1497 virConnectClose(conn);
1502 c_release(LOG_NOTICE, &conn_complain,
1503 PLUGIN_NAME " plugin: Connection established.");
1507 static void lv_disconnect(void) {
1509 virConnectClose(conn);
1511 WARNING(PLUGIN_NAME " plugin: closed connection to libvirt");
1514 static int lv_domain_block_stats(virDomainPtr dom, const char *path,
1515 struct lv_block_stats *bstats) {
1516 #ifdef HAVE_BLOCK_STATS_FLAGS
1518 if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 ||
1520 VIRT_ERROR(conn, "getting the disk params count");
1524 virTypedParameterPtr params = calloc(nparams, sizeof(*params));
1525 if (params == NULL) {
1526 ERROR("virt plugin: alloc(%i) for block=%s parameters failed.", nparams,
1532 if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) {
1533 VIRT_ERROR(conn, "getting the disk params values");
1535 rc = get_block_stats(bstats, params, nparams);
1538 virTypedParamsClear(params, nparams);
1542 return virDomainBlockStats(dom, path, &(bstats->bi), sizeof(bstats->bi));
1543 #endif /* HAVE_BLOCK_STATS_FLAGS */
1546 #ifdef HAVE_PERF_STATS
1547 static void perf_submit(virDomainStatsRecordPtr stats) {
1548 for (int i = 0; i < stats->nparams; ++i) {
1549 /* Replace '.' with '_' in event field to match other metrics' naming
1551 char *c = strchr(stats->params[i].field, '.');
1554 submit(stats->dom, "perf", stats->params[i].field,
1555 &(value_t){.derive = stats->params[i].value.ul}, 1);
1559 static int get_perf_events(virDomainPtr domain) {
1560 virDomainStatsRecordPtr *stats = NULL;
1561 /* virDomainListGetStats requires a NULL terminated list of domains */
1562 virDomainPtr domain_array[] = {domain, NULL};
1565 virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0);
1567 ERROR("virt plugin: virDomainListGetStats failed with status %i.", status);
1571 for (int i = 0; i < status; ++i)
1572 perf_submit(stats[i]);
1574 virDomainStatsRecordListFree(stats);
1577 #endif /* HAVE_PERF_STATS */
1579 static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu,
1580 unsigned char *cpu_maps, int cpu_map_len) {
1581 for (int cpu = 0; cpu < max_cpus; ++cpu) {
1582 char type_instance[DATA_MAX_NAME_LEN];
1583 bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu);
1585 snprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu, cpu);
1586 submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1);
1590 static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) {
1591 int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo);
1592 int cpu_map_len = VIR_CPU_MAPLEN(max_cpus);
1594 virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(*vinfo));
1595 if (vinfo == NULL) {
1596 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1600 unsigned char *cpumaps = calloc(nr_virt_cpu, cpu_map_len);
1601 if (cpumaps == NULL) {
1602 ERROR(PLUGIN_NAME " plugin: calloc failed.");
1608 virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len);
1610 ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.",
1617 for (int i = 0; i < nr_virt_cpu; ++i) {
1618 if (extra_stats & ex_stats_vcpu)
1619 vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu");
1620 if (extra_stats & ex_stats_vcpupin)
1621 vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len);
1629 #ifdef HAVE_CPU_STATS
1630 static int get_pcpu_stats(virDomainPtr dom) {
1631 int nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0);
1633 VIRT_ERROR(conn, "getting the CPU params count");
1637 virTypedParameterPtr param = calloc(nparams, sizeof(*param));
1638 if (param == NULL) {
1639 ERROR(PLUGIN_NAME " plugin: alloc(%i) for cpu parameters failed.", nparams);
1643 int ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats.
1645 virTypedParamsClear(param, nparams);
1647 VIRT_ERROR(conn, "getting the CPU params values");
1651 unsigned long long total_user_cpu_time = 0;
1652 unsigned long long total_syst_cpu_time = 0;
1654 for (int i = 0; i < nparams; ++i) {
1655 if (!strcmp(param[i].field, "user_time"))
1656 total_user_cpu_time = param[i].value.ul;
1657 else if (!strcmp(param[i].field, "system_time"))
1658 total_syst_cpu_time = param[i].value.ul;
1661 if (total_user_cpu_time > 0 || total_syst_cpu_time > 0)
1662 submit_derive2("ps_cputime", total_user_cpu_time, total_syst_cpu_time, dom,
1665 virTypedParamsClear(param, nparams);
1670 #endif /* HAVE_CPU_STATS */
1672 #ifdef HAVE_DOM_REASON
1673 static int submit_domain_state(virDomainPtr domain) {
1674 int domain_state = 0;
1675 int domain_reason = 0;
1677 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1679 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1684 value_t values[] = {
1685 {.gauge = (gauge_t)domain_state}, {.gauge = (gauge_t)domain_reason},
1688 submit(domain, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values));
1693 #ifdef HAVE_LIST_ALL_DOMAINS
1694 static int get_domain_state_notify(virDomainPtr domain) {
1695 int domain_state = 0;
1696 int domain_reason = 0;
1698 int status = virDomainGetState(domain, &domain_state, &domain_reason, 0);
1700 ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.",
1705 domain_state_submit_notif(domain, domain_state, domain_reason);
1709 #endif /* HAVE_LIST_ALL_DOMAINS */
1710 #endif /* HAVE_DOM_REASON */
1712 static int get_memory_stats(virDomainPtr domain) {
1713 virDomainMemoryStatPtr minfo =
1714 calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(*minfo));
1715 if (minfo == NULL) {
1716 ERROR("virt plugin: calloc failed.");
1721 virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0);
1722 if (mem_stats < 0) {
1723 ERROR("virt plugin: virDomainMemoryStats failed with mem_stats %i.",
1729 derive_t swap_in = -1;
1730 derive_t swap_out = -1;
1731 derive_t min_flt = -1;
1732 derive_t maj_flt = -1;
1734 for (int i = 0; i < mem_stats; i++) {
1735 if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_IN)
1736 swap_in = minfo[i].val;
1737 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_OUT)
1738 swap_out = minfo[i].val;
1739 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT)
1740 min_flt = minfo[i].val;
1741 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT)
1742 maj_flt = minfo[i].val;
1743 #ifdef LIBVIR_CHECK_VERSION
1744 #if LIBVIR_CHECK_VERSION(2, 1, 0)
1745 else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_LAST_UPDATE)
1746 /* Skip 'last_update' reporting as that is not memory but timestamp */
1751 memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag);
1754 if (swap_in > 0 || swap_out > 0) {
1755 submit(domain, "swap_io", "in", &(value_t){.gauge = swap_in}, 1);
1756 submit(domain, "swap_io", "out", &(value_t){.gauge = swap_out}, 1);
1759 if (min_flt > 0 || maj_flt > 0) {
1760 value_t values[] = {
1761 {.gauge = (gauge_t)min_flt}, {.gauge = (gauge_t)maj_flt},
1763 submit(domain, "ps_pagefaults", NULL, values, STATIC_ARRAY_SIZE(values));
1770 #ifdef HAVE_DISK_ERR
1771 static void disk_err_submit(virDomainPtr domain,
1772 virDomainDiskErrorPtr disk_err) {
1773 submit(domain, "disk_error", disk_err->disk,
1774 &(value_t){.gauge = disk_err->error}, 1);
1777 static int get_disk_err(virDomainPtr domain) {
1778 /* Get preferred size of disk errors array */
1779 int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
1780 if (disk_err_count == -1) {
1782 " plugin: failed to get preferred size of disk errors array");
1787 " plugin: preferred size of disk errors array: %d for domain %s",
1788 disk_err_count, virDomainGetName(domain));
1789 virDomainDiskError disk_err[disk_err_count];
1791 disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
1792 if (disk_err_count == -1) {
1793 ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
1798 DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
1799 disk_err_count, virDomainGetName(domain));
1801 for (int i = 0; i < disk_err_count; ++i) {
1802 disk_err_submit(domain, &disk_err[i]);
1803 sfree(disk_err[i].disk);
1808 #endif /* HAVE_DISK_ERR */
1810 static int get_block_device_stats(struct block_device *block_dev) {
1812 ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
1816 virDomainBlockInfo binfo;
1817 init_block_info(&binfo);
1819 /* Fetching block info stats only if needed*/
1820 if (extra_stats & (ex_stats_disk_allocation | ex_stats_disk_capacity |
1821 ex_stats_disk_physical)) {
1822 /* Block info statistics can be only fetched from devices with 'source'
1824 if (block_dev->has_source) {
1825 if (virDomainGetBlockInfo(block_dev->dom, block_dev->path, &binfo, 0) <
1827 ERROR(PLUGIN_NAME " plugin: virDomainGetBlockInfo failed for path: %s",
1834 struct lv_block_stats bstats;
1835 init_block_stats(&bstats);
1837 if (lv_domain_block_stats(block_dev->dom, block_dev->path, &bstats) < 0) {
1838 ERROR(PLUGIN_NAME " plugin: lv_domain_block_stats failed");
1842 disk_block_stats_submit(&bstats, block_dev->dom, block_dev->path, &binfo);
1848 #define NM_ADD_ITEM(_fun, _name, _val) \
1850 ret = _fun(¬if, _name, _val); \
1852 ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
1857 #define NM_ADD_STR_ITEMS(_items, _size) \
1859 for (size_t _i = 0; _i < _size; ++_i) { \
1861 " plugin: Adding notification metadata name=%s value=%s", \
1862 _items[_i].name, _items[_i].value); \
1863 NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
1864 _items[_i].value); \
1868 static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
1869 notification_t notif;
1872 /* Local struct, just for the purpose of this function. */
1873 typedef struct nm_str_item_s {
1878 nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
1879 nm_str_item_t fs_str_items[] = {
1880 {.name = "mountpoint", .value = fs_info->mountpoint},
1881 {.name = "name", .value = fs_info->name},
1882 {.name = "fstype", .value = fs_info->fstype}};
1884 for (size_t i = 0; i < fs_info->ndevAlias; ++i) {
1885 fs_dev_alias[i].name = "devAlias";
1886 fs_dev_alias[i].value = fs_info->devAlias[i];
1889 init_notif(¬if, domain, NOTIF_OKAY, "File system information",
1890 "file_system", NULL);
1891 NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
1892 NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
1893 fs_info->ndevAlias);
1894 NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
1896 plugin_dispatch_notification(¬if);
1900 plugin_notification_meta_free(notif.meta);
1904 #undef RETURN_ON_ERR
1905 #undef NM_ADD_STR_ITEMS
1907 static int get_fs_info(virDomainPtr domain) {
1908 virDomainFSInfoPtr *fs_info = NULL;
1911 int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
1912 if (mount_points_cnt == -1) {
1913 ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
1915 return mount_points_cnt;
1918 for (int i = 0; i < mount_points_cnt; ++i) {
1919 if (fs_info_notify(domain, fs_info[i]) != 0) {
1920 ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
1921 "for mount point %s",
1922 fs_info[i]->mountpoint);
1925 virDomainFSInfoFree(fs_info[i]);
1932 #endif /* HAVE_FS_INFO */
1934 #ifdef HAVE_JOB_STATS
1935 static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
1938 if (param->type == VIR_TYPED_PARAM_INT)
1939 vl.derive = param->value.i;
1940 else if (param->type == VIR_TYPED_PARAM_UINT)
1941 vl.derive = param->value.ui;
1942 else if (param->type == VIR_TYPED_PARAM_LLONG)
1943 vl.derive = param->value.l;
1944 else if (param->type == VIR_TYPED_PARAM_ULLONG)
1945 vl.derive = param->value.ul;
1946 else if (param->type == VIR_TYPED_PARAM_DOUBLE)
1947 vl.derive = param->value.d;
1948 else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
1949 vl.derive = param->value.b;
1950 else if (param->type == VIR_TYPED_PARAM_STRING) {
1951 submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
1954 ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
1958 submit(domain, "job_stats", param->field, &vl, 1);
1961 static int get_job_stats(virDomainPtr domain) {
1965 virTypedParameterPtr params = NULL;
1966 int flags = (extra_stats & ex_stats_job_stats_completed)
1967 ? VIR_DOMAIN_JOB_STATS_COMPLETED
1970 ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
1972 ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
1976 DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
1978 for (int i = 0; i < nparams; ++i) {
1979 DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
1981 job_stats_submit(domain, ¶ms[i]);
1984 virTypedParamsFree(params, nparams);
1987 #endif /* HAVE_JOB_STATS */
1989 static int get_domain_metrics(domain_t *domain) {
1990 if (!domain || !domain->ptr) {
1991 ERROR(PLUGIN_NAME " plugin: get_domain_metrics: NULL pointer");
1996 int status = virDomainGetInfo(domain->ptr, &info);
1998 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2003 if (extra_stats & ex_stats_domain_state) {
2004 #ifdef HAVE_DOM_REASON
2005 /* At this point we already know domain's state from virDomainGetInfo call,
2006 * however it doesn't provide a reason for entering particular state.
2007 * We need to get it from virDomainGetState.
2009 GET_STATS(submit_domain_state, "domain reason", domain->ptr);
2013 /* Gather remaining stats only for running domains */
2014 if (info.state != VIR_DOMAIN_RUNNING)
2017 #ifdef HAVE_CPU_STATS
2018 if (extra_stats & ex_stats_pcpu)
2019 get_pcpu_stats(domain->ptr);
2022 cpu_submit(domain, info.cpuTime);
2024 memory_submit(domain->ptr, (gauge_t)info.memory * 1024);
2026 if (extra_stats & (ex_stats_vcpu | ex_stats_vcpupin))
2027 GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.nrVirtCpu);
2028 if (extra_stats & ex_stats_memory)
2029 GET_STATS(get_memory_stats, "memory stats", domain->ptr);
2031 #ifdef HAVE_PERF_STATS
2032 if (extra_stats & ex_stats_perf)
2033 GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
2037 if (extra_stats & ex_stats_fs_info)
2038 GET_STATS(get_fs_info, "file system info", domain->ptr);
2041 #ifdef HAVE_DISK_ERR
2042 if (extra_stats & ex_stats_disk_err)
2043 GET_STATS(get_disk_err, "disk errors", domain->ptr);
2046 #ifdef HAVE_JOB_STATS
2048 (ex_stats_job_stats_completed | ex_stats_job_stats_background))
2049 GET_STATS(get_job_stats, "job stats", domain->ptr);
2052 /* Update cached virDomainInfo. It has to be done after cpu_submit */
2053 memcpy(&domain->info, &info, sizeof(domain->info));
2058 static int get_if_dev_stats(struct interface_device *if_dev) {
2059 virDomainInterfaceStatsStruct stats = {0};
2060 char *display_name = NULL;
2063 ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
2067 switch (interface_format) {
2069 display_name = if_dev->address;
2072 display_name = if_dev->number;
2076 display_name = if_dev->path;
2079 if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
2080 sizeof(stats)) != 0) {
2081 ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
2085 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
2086 submit_derive2("if_octets", (derive_t)stats.rx_bytes,
2087 (derive_t)stats.tx_bytes, if_dev->dom, display_name);
2089 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
2090 submit_derive2("if_packets", (derive_t)stats.rx_packets,
2091 (derive_t)stats.tx_packets, if_dev->dom, display_name);
2093 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
2094 submit_derive2("if_errors", (derive_t)stats.rx_errs,
2095 (derive_t)stats.tx_errs, if_dev->dom, display_name);
2097 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
2098 submit_derive2("if_dropped", (derive_t)stats.rx_drop,
2099 (derive_t)stats.tx_drop, if_dev->dom, display_name);
2103 static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr con_,
2104 virDomainPtr dom, int event, int detail,
2105 __attribute__((unused)) void *opaque) {
2106 int domain_state = map_domain_event_to_state(event);
2107 int domain_reason = 0; /* 0 means UNKNOWN reason for any state */
2108 #ifdef HAVE_DOM_REASON
2109 domain_reason = map_domain_event_detail_to_reason(event, detail);
2111 domain_state_submit_notif(dom, domain_state, domain_reason);
2116 static int register_event_impl(void) {
2117 if (virEventRegisterDefaultImpl() < 0) {
2118 virErrorPtr err = virGetLastError();
2120 " plugin: error while event implementation registering: %s",
2121 err && err->message ? err->message : "Unknown error");
2128 static void virt_notif_thread_set_active(virt_notif_thread_t *thread_data,
2129 const bool active) {
2130 assert(thread_data != NULL);
2131 pthread_mutex_lock(&thread_data->active_mutex);
2132 thread_data->is_active = active;
2133 pthread_mutex_unlock(&thread_data->active_mutex);
2136 static bool virt_notif_thread_is_active(virt_notif_thread_t *thread_data) {
2137 bool active = false;
2139 assert(thread_data != NULL);
2140 pthread_mutex_lock(&thread_data->active_mutex);
2141 active = thread_data->is_active;
2142 pthread_mutex_unlock(&thread_data->active_mutex);
2147 /* worker function running default event implementation */
2148 static void *event_loop_worker(void *arg) {
2149 virt_notif_thread_t *thread_data = (virt_notif_thread_t *)arg;
2151 while (virt_notif_thread_is_active(thread_data)) {
2152 if (virEventRunDefaultImpl() < 0) {
2153 virErrorPtr err = virGetLastError();
2154 ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
2155 err && err->message ? err->message : "Unknown error");
2162 static int virt_notif_thread_init(virt_notif_thread_t *thread_data) {
2163 assert(thread_data != NULL);
2165 int ret = pthread_mutex_init(&thread_data->active_mutex, NULL);
2167 ERROR(PLUGIN_NAME " plugin: Failed to initialize mutex, err %u", ret);
2172 * '0' and positive integers are meaningful ID's, therefore setting
2173 * domain_event_cb_id to '-1'
2175 thread_data->domain_event_cb_id = -1;
2176 pthread_mutex_lock(&thread_data->active_mutex);
2177 thread_data->is_active = false;
2178 pthread_mutex_unlock(&thread_data->active_mutex);
2183 /* register domain event callback and start event loop thread */
2184 static int start_event_loop(virt_notif_thread_t *thread_data) {
2185 assert(thread_data != NULL);
2186 thread_data->domain_event_cb_id = virConnectDomainEventRegisterAny(
2187 conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
2188 VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
2189 if (thread_data->domain_event_cb_id == -1) {
2190 ERROR(PLUGIN_NAME " plugin: error while callback registering");
2194 DEBUG(PLUGIN_NAME " plugin: starting event loop");
2196 virt_notif_thread_set_active(thread_data, 1);
2197 if (pthread_create(&thread_data->event_loop_tid, NULL, event_loop_worker,
2199 ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
2200 virt_notif_thread_set_active(thread_data, 0);
2201 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2202 thread_data->domain_event_cb_id = -1;
2209 /* stop event loop thread and deregister callback */
2210 static void stop_event_loop(virt_notif_thread_t *thread_data) {
2212 DEBUG(PLUGIN_NAME " plugin: stopping event loop");
2215 if (virt_notif_thread_is_active(thread_data)) {
2216 virt_notif_thread_set_active(thread_data, 0);
2217 if (pthread_join(notif_thread.event_loop_tid, NULL) != 0)
2218 ERROR(PLUGIN_NAME " plugin: stopping notification thread failed");
2221 /* ... and de-registering event handler */
2222 if (conn != NULL && thread_data->domain_event_cb_id != -1) {
2223 virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
2224 thread_data->domain_event_cb_id = -1;
2228 static int persistent_domains_state_notification(void) {
2231 #ifdef HAVE_LIST_ALL_DOMAINS
2232 virDomainPtr *domains = NULL;
2233 n = virConnectListAllDomains(conn, &domains,
2234 VIR_CONNECT_LIST_DOMAINS_PERSISTENT);
2236 VIRT_ERROR(conn, "reading list of persistent domains");
2239 DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
2240 /* Fetch each persistent domain's state and notify it */
2242 for (int i = 0; i < n; ++i) {
2243 status = get_domain_state_notify(domains[i]);
2246 ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
2247 virDomainGetName(domains[i]));
2249 virDomainFree(domains[i]);
2253 DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
2257 n = virConnectNumOfDomains(conn);
2260 /* Get list of domains. */
2261 domids = calloc(n, sizeof(*domids));
2262 if (domids == NULL) {
2263 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2266 n = virConnectListDomains(conn, domids, n);
2268 VIRT_ERROR(conn, "reading list of domains");
2272 /* Fetch info of each active domain and notify it */
2273 for (int i = 0; i < n; ++i) {
2275 virDomainPtr dom = NULL;
2276 dom = virDomainLookupByID(conn, domids[i]);
2278 VIRT_ERROR(conn, "virDomainLookupByID");
2279 /* Could be that the domain went away -- ignore it anyway. */
2282 status = virDomainGetInfo(dom, &info);
2284 /* virDomainGetState is not available. Submit 0, which corresponds to
2285 * unknown reason. */
2286 domain_state_submit_notif(dom, info.state, 0);
2288 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2300 static int lv_read(user_data_t *ud) {
2301 if (ud->data == NULL) {
2302 ERROR(PLUGIN_NAME " plugin: NULL userdata");
2306 struct lv_read_instance *inst = ud->data;
2307 struct lv_read_state *state = &inst->read_state;
2310 if (lv_connect() < 0)
2313 /* Wait until inst#0 establish connection */
2315 DEBUG(PLUGIN_NAME " plugin#%s: Wait until inst#0 establish connection",
2323 /* Need to refresh domain or device lists? */
2324 if ((last_refresh == (time_t)0) ||
2325 ((interval > 0) && ((last_refresh + interval) <= t))) {
2326 if (refresh_lists(inst) != 0) {
2327 if (inst->id == 0) {
2328 if (!persistent_notification)
2329 stop_event_loop(¬if_thread);
2337 /* persistent domains state notifications are handled by instance 0 */
2338 if (inst->id == 0 && persistent_notification) {
2339 int status = persistent_domains_state_notification();
2341 DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications "
2342 "returned with status %i",
2347 for (int i = 0; i < state->nr_domains; ++i)
2348 DEBUG(PLUGIN_NAME " plugin: domain %s",
2349 virDomainGetName(state->domains[i].ptr));
2350 for (int i = 0; i < state->nr_block_devices; ++i)
2351 DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i,
2352 virDomainGetName(state->block_devices[i].dom),
2353 state->block_devices[i].path);
2354 for (int i = 0; i < state->nr_interface_devices; ++i)
2355 DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i,
2356 virDomainGetName(state->interface_devices[i].dom),
2357 state->interface_devices[i].path);
2360 /* Get domains' metrics */
2361 for (int i = 0; i < state->nr_domains; ++i) {
2362 domain_t *dom = &state->domains[i];
2365 status = get_domain_metrics(dom);
2366 #ifdef HAVE_DOM_REASON
2367 else if (extra_stats & ex_stats_domain_state)
2368 status = submit_domain_state(dom->ptr);
2372 ERROR(PLUGIN_NAME " plugin: failed to get metrics for domain=%s",
2373 virDomainGetName(dom->ptr));
2376 /* Get block device stats for each domain. */
2377 for (int i = 0; i < state->nr_block_devices; ++i) {
2378 int status = get_block_device_stats(&state->block_devices[i]);
2381 " plugin: failed to get stats for block device (%s) in domain %s",
2382 state->block_devices[i].path,
2383 virDomainGetName(state->block_devices[i].dom));
2386 /* Get interface stats for each domain. */
2387 for (int i = 0; i < state->nr_interface_devices; ++i) {
2388 int status = get_if_dev_stats(&state->interface_devices[i]);
2392 " plugin: failed to get interface stats for device (%s) in domain %s",
2393 state->interface_devices[i].path,
2394 virDomainGetName(state->interface_devices[i].dom));
2400 static int lv_init_instance(size_t i, plugin_read_cb callback) {
2401 struct lv_user_data *lv_ud = &(lv_read_user_data[i]);
2402 struct lv_read_instance *inst = &(lv_ud->inst);
2404 memset(lv_ud, 0, sizeof(*lv_ud));
2406 snprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i);
2409 user_data_t *ud = &(lv_ud->ud);
2411 ud->free_func = NULL;
2413 INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag);
2415 return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud);
2418 static void lv_clean_read_state(struct lv_read_state *state) {
2419 free_block_devices(state);
2420 free_interface_devices(state);
2421 free_domains(state);
2424 static void lv_fini_instance(size_t i) {
2425 struct lv_read_instance *inst = &(lv_read_user_data[i].inst);
2426 struct lv_read_state *state = &(inst->read_state);
2428 lv_clean_read_state(state);
2430 INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag);
2433 static int lv_init(void) {
2434 if (virInitialize() != 0)
2437 /* Init ignorelists if there was no explicit configuration */
2438 if (lv_init_ignorelists() != 0)
2441 if (!persistent_notification)
2442 if (virt_notif_thread_init(¬if_thread) != 0)
2447 DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances);
2449 for (int i = 0; i < nr_instances; ++i)
2450 if (lv_init_instance(i, lv_read) != 0)
2457 * returns 0 on success and <0 on error
2459 static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name,
2461 char xpath_str[BUFFER_MAX_LEN] = {'\0'};
2462 xmlXPathObjectPtr xpath_obj = NULL;
2463 xmlNodePtr xml_node = NULL;
2467 err = xmlXPathRegisterNs(xpath_ctx,
2468 (const xmlChar *)METADATA_VM_PARTITION_PREFIX,
2469 (const xmlChar *)METADATA_VM_PARTITION_URI);
2471 ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s",
2472 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name);
2476 snprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()",
2477 METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT);
2478 xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx);
2479 if (xpath_obj == NULL) {
2480 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s",
2481 xpath_str, dom_name);
2485 if (xpath_obj->type != XPATH_NODESET) {
2486 ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d "
2487 "(wanted %d) on domain %s",
2488 xpath_str, xpath_obj->type, XPATH_NODESET, dom_name);
2493 * from now on there is no real error, it's ok if a domain
2494 * doesn't have the metadata partition tag.
2497 if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) {
2498 DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i "
2499 "expected=1 on domain %s",
2501 (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr,
2504 xml_node = xpath_obj->nodesetval->nodeTab[0];
2505 sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN);
2509 /* deregister to clean up */
2510 err = xmlXPathRegisterNs(xpath_ctx,
2511 (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL);
2513 /* we can't really recover here */
2515 " plugin: deregistration of namespace %s failed for domain %s",
2516 METADATA_VM_PARTITION_PREFIX, dom_name);
2519 xmlXPathFreeObject(xpath_obj);
2524 static int is_known_tag(const char *dom_tag) {
2525 for (int i = 0; i < nr_instances; ++i)
2526 if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag))
2531 static int lv_instance_include_domain(struct lv_read_instance *inst,
2532 const char *dom_name,
2533 const char *dom_tag) {
2534 if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0))
2537 /* instance#0 will always be there, so it is in charge of extra duties */
2538 if (inst->id == 0) {
2539 if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) {
2540 DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s "
2541 "with unknown tag '%s'",
2542 inst->tag, dom_name, dom_tag);
2550 static void lv_add_block_devices(struct lv_read_state *state, virDomainPtr dom,
2551 const char *domname,
2552 xmlXPathContextPtr xpath_ctx) {
2553 xmlXPathObjectPtr xpath_obj =
2554 xmlXPathEval((const xmlChar *)"/domain/devices/disk", xpath_ctx);
2556 if (xpath_obj == NULL) {
2557 DEBUG(PLUGIN_NAME " plugin: no disk xpath-object found for domain %s",
2562 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2563 DEBUG(PLUGIN_NAME " plugin: no disk node found for domain %s", domname);
2567 xmlNodeSetPtr xml_block_devices = xpath_obj->nodesetval;
2568 for (int i = 0; i < xml_block_devices->nodeNr; ++i) {
2569 xmlNodePtr xml_device = xpath_obj->nodesetval->nodeTab[i];
2570 char *path_str = NULL;
2571 char *source_str = NULL;
2576 /* Fetching path and source for block device */
2577 for (xmlNodePtr child = xml_device->children; child; child = child->next) {
2578 if (child->type != XML_ELEMENT_NODE)
2581 /* we are interested only in either "target" or "source" elements */
2582 if (xmlStrEqual(child->name, (const xmlChar *)"target"))
2583 path_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2584 else if (xmlStrEqual(child->name, (const xmlChar *)"source")) {
2585 /* name of the source is located in "dev" or "file" element (it depends
2586 * on type of source). Trying "dev" at first*/
2587 source_str = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2589 source_str = (char *)xmlGetProp(child, (const xmlChar *)"file");
2591 /* ignoring any other element*/
2594 /* source_str will be interpreted as a device path if blockdevice_format
2595 * param is set to 'source'. */
2596 const char *device_path =
2597 (blockdevice_format == source) ? source_str : path_str;
2600 /* no path found and we can't add block_device without it */
2601 WARNING(PLUGIN_NAME " plugin: could not generate device path for disk in "
2602 "domain %s - disk device will be ignored in reports",
2607 if (ignore_device_match(il_block_devices, domname, device_path) == 0) {
2608 /* we only have to store information whether 'source' exists or not */
2609 bool has_source = (source_str != NULL) ? true : false;
2611 add_block_device(state, dom, device_path, has_source);
2619 xmlFree(source_str);
2623 xmlXPathFreeObject(xpath_obj);
2626 static void lv_add_network_interfaces(struct lv_read_state *state,
2627 virDomainPtr dom, const char *domname,
2628 xmlXPathContextPtr xpath_ctx) {
2629 xmlXPathObjectPtr xpath_obj = xmlXPathEval(
2630 (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx);
2632 if (xpath_obj == NULL)
2635 if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) {
2636 xmlXPathFreeObject(xpath_obj);
2640 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
2642 for (int j = 0; j < xml_interfaces->nodeNr; ++j) {
2644 char *address = NULL;
2645 const int itf_number = j + 1;
2647 xmlNodePtr xml_interface = xml_interfaces->nodeTab[j];
2651 for (xmlNodePtr child = xml_interface->children; child;
2652 child = child->next) {
2653 if (child->type != XML_ELEMENT_NODE)
2656 if (xmlStrEqual(child->name, (const xmlChar *)"target")) {
2657 path = (char *)xmlGetProp(child, (const xmlChar *)"dev");
2660 } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) {
2661 address = (char *)xmlGetProp(child, (const xmlChar *)"address");
2667 bool device_ignored = false;
2668 switch (interface_format) {
2670 if (ignore_device_match(il_interface_devices, domname, path) != 0)
2671 device_ignored = true;
2674 if (ignore_device_match(il_interface_devices, domname, address) != 0)
2675 device_ignored = true;
2678 char number_string[4];
2679 snprintf(number_string, sizeof(number_string), "%d", itf_number);
2680 if (ignore_device_match(il_interface_devices, domname, number_string) !=
2682 device_ignored = true;
2685 ERROR(PLUGIN_NAME " plugin: Unknown interface_format option: %d",
2689 if (!device_ignored)
2690 add_interface_device(state, dom, path, address, itf_number);
2697 xmlXPathFreeObject(xpath_obj);
2700 static bool is_domain_ignored(virDomainPtr dom) {
2701 const char *domname = virDomainGetName(dom);
2703 if (domname == NULL) {
2704 VIRT_ERROR(conn, "virDomainGetName failed, ignoring domain");
2708 if (ignorelist_match(il_domains, domname) != 0) {
2710 " plugin: ignoring domain '%s' because of ignorelist option",
2718 static int refresh_lists(struct lv_read_instance *inst) {
2719 struct lv_read_state *state = &inst->read_state;
2722 #ifndef HAVE_LIST_ALL_DOMAINS
2723 n = virConnectNumOfDomains(conn);
2725 VIRT_ERROR(conn, "reading number of domains");
2730 lv_clean_read_state(state);
2732 #ifndef HAVE_LIST_ALL_DOMAINS
2737 #ifdef HAVE_LIST_ALL_DOMAINS
2738 virDomainPtr *domains, *domains_inactive;
2739 int m = virConnectListAllDomains(conn, &domains_inactive,
2740 VIR_CONNECT_LIST_DOMAINS_INACTIVE);
2741 n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE);
2743 /* Get list of domains. */
2744 int *domids = calloc(n, sizeof(*domids));
2745 if (domids == NULL) {
2746 ERROR(PLUGIN_NAME " plugin: calloc failed.");
2750 n = virConnectListDomains(conn, domids, n);
2754 VIRT_ERROR(conn, "reading list of domains");
2755 #ifndef HAVE_LIST_ALL_DOMAINS
2758 for (int i = 0; i < m; ++i)
2759 virDomainFree(domains_inactive[i]);
2760 sfree(domains_inactive);
2765 #ifdef HAVE_LIST_ALL_DOMAINS
2766 for (int i = 0; i < m; ++i)
2767 if (is_domain_ignored(domains_inactive[i]) ||
2768 add_domain(state, domains_inactive[i], 0) < 0) {
2769 /* domain ignored or failed during adding to domains list*/
2770 virDomainFree(domains_inactive[i]);
2771 domains_inactive[i] = NULL;
2776 /* Fetch each domain and add it to the list, unless ignore. */
2777 for (int i = 0; i < n; ++i) {
2779 #ifdef HAVE_LIST_ALL_DOMAINS
2780 virDomainPtr dom = domains[i];
2782 virDomainPtr dom = virDomainLookupByID(conn, domids[i]);
2784 VIRT_ERROR(conn, "virDomainLookupByID");
2785 /* Could be that the domain went away -- ignore it anyway. */
2790 if (is_domain_ignored(dom) || add_domain(state, dom, 1) < 0) {
2792 * domain ignored or failed during adding to domains list
2794 * When domain is already tracked, then there is
2795 * no problem with memory handling (will be freed
2796 * with the rest of domains cached data)
2797 * But in case of error like this (error occurred
2798 * before adding domain to track) we have to take
2799 * care it ourselves and call virDomainFree
2805 const char *domname = virDomainGetName(dom);
2806 if (domname == NULL) {
2807 VIRT_ERROR(conn, "virDomainGetName");
2812 int status = virDomainGetInfo(dom, &info);
2814 ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
2819 if (info.state != VIR_DOMAIN_RUNNING) {
2820 DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", domname);
2824 /* Get a list of devices for this domain. */
2825 xmlDocPtr xml_doc = NULL;
2826 xmlXPathContextPtr xpath_ctx = NULL;
2828 char *xml = virDomainGetXMLDesc(dom, 0);
2830 VIRT_ERROR(conn, "virDomainGetXMLDesc");
2834 /* Yuck, XML. Parse out the devices. */
2835 xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET);
2836 if (xml_doc == NULL) {
2837 VIRT_ERROR(conn, "xmlReadDoc");
2841 xpath_ctx = xmlXPathNewContext(xml_doc);
2843 char tag[PARTITION_TAG_MAX_LEN] = {'\0'};
2844 if (lv_domain_get_tag(xpath_ctx, domname, tag) < 0) {
2845 ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed.");
2849 if (!lv_instance_include_domain(inst, domname, tag))
2852 /* Block devices. */
2853 if (report_block_devices)
2854 lv_add_block_devices(state, dom, domname, xpath_ctx);
2856 /* Network interfaces. */
2857 if (report_network_interfaces)
2858 lv_add_network_interfaces(state, dom, domname, xpath_ctx);
2862 xmlXPathFreeContext(xpath_ctx);
2864 xmlFreeDoc(xml_doc);
2868 #ifdef HAVE_LIST_ALL_DOMAINS
2869 /* NOTE: domains_active and domains_inactive data will be cleared during
2870 refresh of all domains (inside lv_clean_read_state function) so we need
2871 to free here only allocated arrays */
2873 sfree(domains_inactive);
2880 DEBUG(PLUGIN_NAME " plugin#%s: refreshing"
2881 " domains=%i block_devices=%i iface_devices=%i",
2882 inst->tag, state->nr_domains, state->nr_block_devices,
2883 state->nr_interface_devices);
2888 static void free_domains(struct lv_read_state *state) {
2889 if (state->domains) {
2890 for (int i = 0; i < state->nr_domains; ++i)
2891 virDomainFree(state->domains[i].ptr);
2892 sfree(state->domains);
2894 state->domains = NULL;
2895 state->nr_domains = 0;
2898 static int add_domain(struct lv_read_state *state, virDomainPtr dom,
2900 int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1);
2902 domain_t *new_ptr = realloc(state->domains, new_size);
2903 if (new_ptr == NULL) {
2904 ERROR(PLUGIN_NAME " plugin: realloc failed in add_domain()");
2908 state->domains = new_ptr;
2909 state->domains[state->nr_domains].ptr = dom;
2910 state->domains[state->nr_domains].active = active;
2911 memset(&state->domains[state->nr_domains].info, 0,
2912 sizeof(state->domains[state->nr_domains].info));
2914 return state->nr_domains++;
2917 static void free_block_devices(struct lv_read_state *state) {
2918 if (state->block_devices) {
2919 for (int i = 0; i < state->nr_block_devices; ++i)
2920 sfree(state->block_devices[i].path);
2921 sfree(state->block_devices);
2923 state->block_devices = NULL;
2924 state->nr_block_devices = 0;
2927 static int add_block_device(struct lv_read_state *state, virDomainPtr dom,
2928 const char *path, bool has_source) {
2930 char *path_copy = strdup(path);
2935 sizeof(state->block_devices[0]) * (state->nr_block_devices + 1);
2937 struct block_device *new_ptr = realloc(state->block_devices, new_size);
2938 if (new_ptr == NULL) {
2942 state->block_devices = new_ptr;
2943 state->block_devices[state->nr_block_devices].dom = dom;
2944 state->block_devices[state->nr_block_devices].path = path_copy;
2945 state->block_devices[state->nr_block_devices].has_source = has_source;
2946 return state->nr_block_devices++;
2949 static void free_interface_devices(struct lv_read_state *state) {
2950 if (state->interface_devices) {
2951 for (int i = 0; i < state->nr_interface_devices; ++i) {
2952 sfree(state->interface_devices[i].path);
2953 sfree(state->interface_devices[i].address);
2954 sfree(state->interface_devices[i].number);
2956 sfree(state->interface_devices);
2958 state->interface_devices = NULL;
2959 state->nr_interface_devices = 0;
2962 static int add_interface_device(struct lv_read_state *state, virDomainPtr dom,
2963 const char *path, const char *address,
2964 unsigned int number) {
2966 if ((path == NULL) || (address == NULL))
2969 char *path_copy = strdup(path);
2973 char *address_copy = strdup(address);
2974 if (!address_copy) {
2979 char number_string[21];
2980 snprintf(number_string, sizeof(number_string), "interface-%u", number);
2981 char *number_copy = strdup(number_string);
2984 sfree(address_copy);
2989 sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1);
2991 struct interface_device *new_ptr =
2992 realloc(state->interface_devices, new_size);
2993 if (new_ptr == NULL) {
2995 sfree(address_copy);
3000 state->interface_devices = new_ptr;
3001 state->interface_devices[state->nr_interface_devices].dom = dom;
3002 state->interface_devices[state->nr_interface_devices].path = path_copy;
3003 state->interface_devices[state->nr_interface_devices].address = address_copy;
3004 state->interface_devices[state->nr_interface_devices].number = number_copy;
3005 return state->nr_interface_devices++;
3008 static int ignore_device_match(ignorelist_t *il, const char *domname,
3009 const char *devpath) {
3010 if ((domname == NULL) || (devpath == NULL))
3013 size_t n = strlen(domname) + strlen(devpath) + 2;
3014 char *name = malloc(n);
3016 ERROR(PLUGIN_NAME " plugin: malloc failed.");
3019 snprintf(name, n, "%s:%s", domname, devpath);
3020 int r = ignorelist_match(il, name);
3025 static int lv_shutdown(void) {
3026 for (int i = 0; i < nr_instances; ++i) {
3027 lv_fini_instance(i);
3030 if (!persistent_notification)
3031 stop_event_loop(¬if_thread);
3035 ignorelist_free(il_domains);
3037 ignorelist_free(il_block_devices);
3038 il_block_devices = NULL;
3039 ignorelist_free(il_interface_devices);
3040 il_interface_devices = NULL;
3045 void module_register(void) {
3046 plugin_register_complex_config("virt", lv_config);
3047 plugin_register_init(PLUGIN_NAME, lv_init);
3048 plugin_register_shutdown(PLUGIN_NAME, lv_shutdown);