1 /**
2 * collectd - src/libvirt.c
3 * Copyright (C) 2006-2008 Red Hat Inc.
4 *
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.
8 *
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.
13 *
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
17 *
18 * Authors:
19 * Richard W.M. Jones <rjones@redhat.com>
20 **/
22 #include "collectd.h"
23 #include "common.h"
24 #include "plugin.h"
25 #include "configfile.h"
26 #include "utils_ignorelist.h"
27 #include "utils_complain.h"
29 #include <libvirt/libvirt.h>
30 #include <libvirt/virterror.h>
31 #include <libxml/parser.h>
32 #include <libxml/tree.h>
33 #include <libxml/xpath.h>
35 static const char *config_keys[] = {
36 "Connection",
38 "RefreshInterval",
40 "Domain",
41 "BlockDevice",
42 "InterfaceDevice",
43 "IgnoreSelected",
45 "HostnameFormat",
46 "InterfaceFormat",
48 NULL
49 };
50 #define NR_CONFIG_KEYS ((sizeof config_keys / sizeof config_keys[0]) - 1)
52 /* Connection. */
53 static virConnectPtr conn = 0;
54 static char *conn_string = NULL;
55 static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC;
57 /* Seconds between list refreshes, 0 disables completely. */
58 static int interval = 60;
60 /* List of domains, if specified. */
61 static ignorelist_t *il_domains = NULL;
62 /* List of block devices, if specified. */
63 static ignorelist_t *il_block_devices = NULL;
64 /* List of network interface devices, if specified. */
65 static ignorelist_t *il_interface_devices = NULL;
67 static int ignore_device_match (ignorelist_t *,
68 const char *domname, const char *devpath);
70 /* Actual list of domains found on last refresh. */
71 static virDomainPtr *domains = NULL;
72 static int nr_domains = 0;
74 static void free_domains (void);
75 static int add_domain (virDomainPtr dom);
77 /* Actual list of block devices found on last refresh. */
78 struct block_device {
79 virDomainPtr dom; /* domain */
80 char *path; /* name of block device */
81 };
83 static struct block_device *block_devices = NULL;
84 static int nr_block_devices = 0;
86 static void free_block_devices (void);
87 static int add_block_device (virDomainPtr dom, const char *path);
89 /* Actual list of network interfaces found on last refresh. */
90 struct interface_device {
91 virDomainPtr dom; /* domain */
92 char *path; /* name of interface device */
93 char *address; /* mac address of interface device */
94 };
96 static struct interface_device *interface_devices = NULL;
97 static int nr_interface_devices = 0;
99 static void free_interface_devices (void);
100 static int add_interface_device (virDomainPtr dom, const char *path, const char *address);
102 /* HostnameFormat. */
103 #define HF_MAX_FIELDS 3
105 enum hf_field {
106 hf_none = 0,
107 hf_hostname,
108 hf_name,
109 hf_uuid
110 };
112 static enum hf_field hostname_format[HF_MAX_FIELDS] =
113 { hf_name };
115 /* InterfaceFormat. */
117 enum if_field {
118 if_address,
119 if_name
120 };
122 static enum if_field interface_format = if_name;
124 /* Time that we last refreshed. */
125 static time_t last_refresh = (time_t) 0;
127 static int refresh_lists (void);
129 /* Submit functions. */
130 static void cpu_submit (unsigned long long cpu_time,
131 time_t t,
132 virDomainPtr dom, const char *type);
133 static void vcpu_submit (unsigned long long cpu_time,
134 time_t t,
135 virDomainPtr dom, int vcpu_nr, const char *type);
136 static void submit_counter2 (const char *type, counter_t v0, counter_t v1,
137 time_t t,
138 virDomainPtr dom, const char *devname);
140 /* ERROR(...) macro for virterrors. */
141 #define VIRT_ERROR(conn,s) do { \
142 virErrorPtr err; \
143 err = (conn) ? virConnGetLastError ((conn)) : virGetLastError (); \
144 if (err) ERROR ("%s: %s", (s), err->message); \
145 } while(0)
147 static int
148 lv_init (void)
149 {
150 if (virInitialize () != 0)
151 return -1;
153 return 0;
154 }
156 static int
157 lv_config (const char *key, const char *value)
158 {
159 if (virInitialize () != 0)
160 return 1;
162 if (il_domains == NULL)
163 il_domains = ignorelist_create (1);
164 if (il_block_devices == NULL)
165 il_block_devices = ignorelist_create (1);
166 if (il_interface_devices == NULL)
167 il_interface_devices = ignorelist_create (1);
169 if (strcasecmp (key, "Connection") == 0) {
170 char *tmp = strdup (value);
171 if (tmp == NULL) {
172 ERROR ("libvirt plugin: Connection strdup failed.");
173 return 1;
174 }
175 sfree (conn_string);
176 conn_string = tmp;
177 return 0;
178 }
180 if (strcasecmp (key, "RefreshInterval") == 0) {
181 char *eptr = NULL;
182 interval = strtol (value, &eptr, 10);
183 if (eptr == NULL || *eptr != '\0') return 1;
184 return 0;
185 }
187 if (strcasecmp (key, "Domain") == 0) {
188 if (ignorelist_add (il_domains, value)) return 1;
189 return 0;
190 }
191 if (strcasecmp (key, "BlockDevice") == 0) {
192 if (ignorelist_add (il_block_devices, value)) return 1;
193 return 0;
194 }
195 if (strcasecmp (key, "InterfaceDevice") == 0) {
196 if (ignorelist_add (il_interface_devices, value)) return 1;
197 return 0;
198 }
200 if (strcasecmp (key, "IgnoreSelected") == 0) {
201 if (IS_TRUE (value))
202 {
203 ignorelist_set_invert (il_domains, 0);
204 ignorelist_set_invert (il_block_devices, 0);
205 ignorelist_set_invert (il_interface_devices, 0);
206 }
207 else
208 {
209 ignorelist_set_invert (il_domains, 1);
210 ignorelist_set_invert (il_block_devices, 1);
211 ignorelist_set_invert (il_interface_devices, 1);
212 }
213 return 0;
214 }
216 if (strcasecmp (key, "HostnameFormat") == 0) {
217 char *value_copy;
218 char *fields[HF_MAX_FIELDS];
219 int i, n;
221 value_copy = strdup (value);
222 if (value_copy == NULL) {
223 ERROR ("libvirt plugin: strdup failed.");
224 return -1;
225 }
227 n = strsplit (value_copy, fields, HF_MAX_FIELDS);
228 if (n < 1) {
229 free (value_copy);
230 ERROR ("HostnameFormat: no fields");
231 return -1;
232 }
234 for (i = 0; i < n; ++i) {
235 if (strcasecmp (fields[i], "hostname") == 0)
236 hostname_format[i] = hf_hostname;
237 else if (strcasecmp (fields[i], "name") == 0)
238 hostname_format[i] = hf_name;
239 else if (strcasecmp (fields[i], "uuid") == 0)
240 hostname_format[i] = hf_uuid;
241 else {
242 free (value_copy);
243 ERROR ("unknown HostnameFormat field: %s", fields[i]);
244 return -1;
245 }
246 }
247 free (value_copy);
249 for (i = n; i < HF_MAX_FIELDS; ++i)
250 hostname_format[i] = hf_none;
252 return 0;
253 }
255 if (strcasecmp (key, "InterfaceFormat") == 0) {
256 char *value_copy;
258 value_copy = strdup (value);
259 if (value_copy == NULL) {
260 ERROR ("libvirt plugin: strdup failed.");
261 return -1;
262 }
264 if (strcasecmp (value_copy, "name") == 0)
265 interface_format = if_name;
266 else if (strcasecmp (value_copy, "address") == 0)
267 interface_format = if_address;
268 else {
269 free (value_copy);
270 ERROR ("unknown InterfaceFormat: %s", value_copy);
271 return -1;
272 }
273 free (value_copy);
274 return 0;
275 }
277 /* Unrecognised option. */
278 return -1;
279 }
281 static int
282 lv_read (void)
283 {
284 time_t t;
285 int i;
287 if (conn == NULL) {
288 /* `conn_string == NULL' is acceptable. */
289 conn = virConnectOpenReadOnly (conn_string);
290 if (conn == NULL) {
291 c_complain (LOG_ERR, &conn_complain,
292 "libvirt plugin: Unable to connect: "
293 "virConnectOpenReadOnly failed.");
294 return -1;
295 }
296 }
297 c_release (LOG_NOTICE, &conn_complain,
298 "libvirt plugin: Connection established.");
300 time (&t);
302 /* Need to refresh domain or device lists? */
303 if ((last_refresh == (time_t) 0) ||
304 ((interval > 0) && ((last_refresh + interval) <= t))) {
305 if (refresh_lists () != 0) {
306 if (conn != NULL)
307 virConnectClose (conn);
308 conn = NULL;
309 return -1;
310 }
311 last_refresh = t;
312 }
314 #if 0
315 for (i = 0; i < nr_domains; ++i)
316 fprintf (stderr, "domain %s\n", virDomainGetName (domains[i]));
317 for (i = 0; i < nr_block_devices; ++i)
318 fprintf (stderr, "block device %d %s:%s\n",
319 i, virDomainGetName (block_devices[i].dom),
320 block_devices[i].path);
321 for (i = 0; i < nr_interface_devices; ++i)
322 fprintf (stderr, "interface device %d %s:%s\n",
323 i, virDomainGetName (interface_devices[i].dom),
324 interface_devices[i].path);
325 #endif
327 /* Get CPU usage, VCPU usage for each domain. */
328 for (i = 0; i < nr_domains; ++i) {
329 virDomainInfo info;
330 virVcpuInfoPtr vinfo = NULL;
331 int j;
333 if (virDomainGetInfo (domains[i], &info) != 0)
334 continue;
336 cpu_submit (info.cpuTime, t, domains[i], "virt_cpu_total");
338 vinfo = malloc (info.nrVirtCpu * sizeof vinfo[0]);
339 if (vinfo == NULL) {
340 ERROR ("libvirt plugin: malloc failed.");
341 continue;
342 }
344 if (virDomainGetVcpus (domains[i], vinfo, info.nrVirtCpu,
345 NULL, 0) != 0) {
346 free (vinfo);
347 continue;
348 }
350 for (j = 0; j < info.nrVirtCpu; ++j)
351 vcpu_submit (vinfo[j].cpuTime,
352 t, domains[i], vinfo[j].number, "virt_vcpu");
354 free (vinfo);
355 }
357 /* Get block device stats for each domain. */
358 for (i = 0; i < nr_block_devices; ++i) {
359 struct _virDomainBlockStats stats;
361 if (virDomainBlockStats (block_devices[i].dom, block_devices[i].path,
362 &stats, sizeof stats) != 0)
363 continue;
365 if ((stats.rd_req != -1) && (stats.wr_req != -1))
366 submit_counter2 ("disk_ops",
367 (counter_t) stats.rd_req, (counter_t) stats.wr_req,
368 t, block_devices[i].dom, block_devices[i].path);
370 if ((stats.rd_bytes != -1) && (stats.wr_bytes != -1))
371 submit_counter2 ("disk_octets",
372 (counter_t) stats.rd_bytes, (counter_t) stats.wr_bytes,
373 t, block_devices[i].dom, block_devices[i].path);
374 } /* for (nr_block_devices) */
376 /* Get interface stats for each domain. */
377 for (i = 0; i < nr_interface_devices; ++i) {
378 struct _virDomainInterfaceStats stats;
379 char *display_name = interface_devices[i].path;
381 if (interface_format == if_address)
382 display_name = interface_devices[i].address;
384 if (virDomainInterfaceStats (interface_devices[i].dom,
385 interface_devices[i].path,
386 &stats, sizeof stats) != 0)
387 continue;
389 if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
390 submit_counter2 ("if_octets",
391 (counter_t) stats.rx_bytes, (counter_t) stats.tx_bytes,
392 t, interface_devices[i].dom, display_name);
394 if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
395 submit_counter2 ("if_packets",
396 (counter_t) stats.rx_packets, (counter_t) stats.tx_packets,
397 t, interface_devices[i].dom, display_name);
399 if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
400 submit_counter2 ("if_errors",
401 (counter_t) stats.rx_errs, (counter_t) stats.tx_errs,
402 t, interface_devices[i].dom, display_name);
404 if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
405 submit_counter2 ("if_dropped",
406 (counter_t) stats.rx_drop, (counter_t) stats.tx_drop,
407 t, interface_devices[i].dom, display_name);
408 } /* for (nr_interface_devices) */
410 return 0;
411 }
413 static int
414 refresh_lists (void)
415 {
416 int n;
418 n = virConnectNumOfDomains (conn);
419 if (n < 0) {
420 VIRT_ERROR (conn, "reading number of domains");
421 return -1;
422 }
424 if (n > 0) {
425 int i;
426 int *domids;
428 /* Get list of domains. */
429 domids = malloc (sizeof (int) * n);
430 if (domids == 0) {
431 ERROR ("libvirt plugin: malloc failed.");
432 return -1;
433 }
435 n = virConnectListDomains (conn, domids, n);
436 if (n < 0) {
437 VIRT_ERROR (conn, "reading list of domains");
438 free (domids);
439 return -1;
440 }
442 free_block_devices ();
443 free_interface_devices ();
444 free_domains ();
446 /* Fetch each domain and add it to the list, unless ignore. */
447 for (i = 0; i < n; ++i) {
448 virDomainPtr dom = NULL;
449 const char *name;
450 char *xml = NULL;
451 xmlDocPtr xml_doc = NULL;
452 xmlXPathContextPtr xpath_ctx = NULL;
453 xmlXPathObjectPtr xpath_obj = NULL;
454 int j;
456 dom = virDomainLookupByID (conn, domids[i]);
457 if (dom == NULL) {
458 VIRT_ERROR (conn, "virDomainLookupByID");
459 /* Could be that the domain went away -- ignore it anyway. */
460 continue;
461 }
463 name = virDomainGetName (dom);
464 if (name == NULL) {
465 VIRT_ERROR (conn, "virDomainGetName");
466 goto cont;
467 }
469 if (il_domains && ignorelist_match (il_domains, name) != 0)
470 goto cont;
472 if (add_domain (dom) < 0) {
473 ERROR ("libvirt plugin: malloc failed.");
474 goto cont;
475 }
477 /* Get a list of devices for this domain. */
478 xml = virDomainGetXMLDesc (dom, 0);
479 if (!xml) {
480 VIRT_ERROR (conn, "virDomainGetXMLDesc");
481 goto cont;
482 }
484 /* Yuck, XML. Parse out the devices. */
485 xml_doc = xmlReadDoc ((xmlChar *) xml, NULL, NULL, XML_PARSE_NONET);
486 if (xml_doc == NULL) {
487 VIRT_ERROR (conn, "xmlReadDoc");
488 goto cont;
489 }
491 xpath_ctx = xmlXPathNewContext (xml_doc);
493 /* Block devices. */
494 xpath_obj = xmlXPathEval
495 ((xmlChar *) "/domain/devices/disk/target[@dev]",
496 xpath_ctx);
497 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
498 xpath_obj->nodesetval == NULL)
499 goto cont;
501 for (j = 0; j < xpath_obj->nodesetval->nodeNr; ++j) {
502 xmlNodePtr node;
503 char *path = NULL;
505 node = xpath_obj->nodesetval->nodeTab[j];
506 if (!node) continue;
507 path = (char *) xmlGetProp (node, (xmlChar *) "dev");
508 if (!path) continue;
510 if (il_block_devices &&
511 ignore_device_match (il_block_devices, name, path) != 0)
512 goto cont2;
514 add_block_device (dom, path);
515 cont2:
516 if (path) xmlFree (path);
517 }
518 xmlXPathFreeObject (xpath_obj);
520 /* Network interfaces. */
521 xpath_obj = xmlXPathEval
522 ((xmlChar *) "/domain/devices/interface[target[@dev]]",
523 xpath_ctx);
524 if (xpath_obj == NULL || xpath_obj->type != XPATH_NODESET ||
525 xpath_obj->nodesetval == NULL)
526 goto cont;
528 xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval;
530 for (j = 0; j < xml_interfaces->nodeNr; ++j) {
531 char *path = NULL;
532 char *address = NULL;
533 xmlNodePtr xml_interface;
535 xml_interface = xml_interfaces->nodeTab[j];
536 if (!xml_interface) continue;
537 xmlNodePtr child = NULL;
539 for (child = xml_interface->children; child; child = child->next) {
540 if (child->type != XML_ELEMENT_NODE) continue;
542 if (xmlStrEqual(child->name, (const xmlChar *) "target")) {
543 path = (char *) xmlGetProp (child, (const xmlChar *) "dev");
544 if (!path) continue;
545 } else if (xmlStrEqual(child->name, (const xmlChar *) "mac")) {
546 address = (char *) xmlGetProp (child, (const xmlChar *) "address");
547 if (!address) continue;
548 }
549 }
551 if (il_interface_devices &&
552 (ignore_device_match (il_interface_devices, name, path) != 0 ||
553 ignore_device_match (il_interface_devices, name, address) != 0))
554 goto cont3;
556 add_interface_device (dom, path, address);
557 cont3:
558 if (path) xmlFree (path);
559 if (address) xmlFree (address);
560 }
562 cont:
563 if (xpath_obj) xmlXPathFreeObject (xpath_obj);
564 if (xpath_ctx) xmlXPathFreeContext (xpath_ctx);
565 if (xml_doc) xmlFreeDoc (xml_doc);
566 if (xml) free (xml);
567 }
569 free (domids);
570 }
572 return 0;
573 }
575 static void
576 free_domains ()
577 {
578 int i;
580 if (domains) {
581 for (i = 0; i < nr_domains; ++i)
582 virDomainFree (domains[i]);
583 free (domains);
584 }
585 domains = NULL;
586 nr_domains = 0;
587 }
589 static int
590 add_domain (virDomainPtr dom)
591 {
592 virDomainPtr *new_ptr;
593 int new_size = sizeof (domains[0]) * (nr_domains+1);
595 if (domains)
596 new_ptr = realloc (domains, new_size);
597 else
598 new_ptr = malloc (new_size);
600 if (new_ptr == NULL)
601 return -1;
603 domains = new_ptr;
604 domains[nr_domains] = dom;
605 return nr_domains++;
606 }
608 static void
609 free_block_devices ()
610 {
611 int i;
613 if (block_devices) {
614 for (i = 0; i < nr_block_devices; ++i)
615 free (block_devices[i].path);
616 free (block_devices);
617 }
618 block_devices = NULL;
619 nr_block_devices = 0;
620 }
622 static int
623 add_block_device (virDomainPtr dom, const char *path)
624 {
625 struct block_device *new_ptr;
626 int new_size = sizeof (block_devices[0]) * (nr_block_devices+1);
627 char *path_copy;
629 path_copy = strdup (path);
630 if (!path_copy)
631 return -1;
633 if (block_devices)
634 new_ptr = realloc (block_devices, new_size);
635 else
636 new_ptr = malloc (new_size);
638 if (new_ptr == NULL) {
639 free (path_copy);
640 return -1;
641 }
642 block_devices = new_ptr;
643 block_devices[nr_block_devices].dom = dom;
644 block_devices[nr_block_devices].path = path_copy;
645 return nr_block_devices++;
646 }
648 static void
649 free_interface_devices ()
650 {
651 int i;
653 if (interface_devices) {
654 for (i = 0; i < nr_interface_devices; ++i) {
655 free (interface_devices[i].path);
656 free (interface_devices[i].address);
657 }
658 free (interface_devices);
659 }
660 interface_devices = NULL;
661 nr_interface_devices = 0;
662 }
664 static int
665 add_interface_device (virDomainPtr dom, const char *path, const char *address)
666 {
667 struct interface_device *new_ptr;
668 int new_size = sizeof (interface_devices[0]) * (nr_interface_devices+1);
669 char *path_copy, *address_copy;
671 path_copy = strdup (path);
672 if (!path_copy) return -1;
674 address_copy = strdup (address);
675 if (!address_copy) return -1;
677 if (interface_devices)
678 new_ptr = realloc (interface_devices, new_size);
679 else
680 new_ptr = malloc (new_size);
682 if (new_ptr == NULL) {
683 free (path_copy);
684 free (address_copy);
685 return -1;
686 }
687 interface_devices = new_ptr;
688 interface_devices[nr_interface_devices].dom = dom;
689 interface_devices[nr_interface_devices].path = path_copy;
690 interface_devices[nr_interface_devices].address = address_copy;
691 return nr_interface_devices++;
692 }
694 static int
695 ignore_device_match (ignorelist_t *il, const char *domname, const char *devpath)
696 {
697 char *name;
698 int n, r;
700 n = sizeof (char) * (strlen (domname) + strlen (devpath) + 2);
701 name = malloc (n);
702 if (name == NULL) {
703 ERROR ("libvirt plugin: malloc failed.");
704 return 0;
705 }
706 ssnprintf (name, n, "%s:%s", domname, devpath);
707 r = ignorelist_match (il, name);
708 free (name);
709 return r;
710 }
712 static void
713 init_value_list (value_list_t *vl, time_t t, virDomainPtr dom)
714 {
715 int i, n;
716 const char *name;
717 char uuid[VIR_UUID_STRING_BUFLEN];
718 char *host_ptr;
719 size_t host_len;
721 vl->time = t;
722 vl->interval = interval_g;
724 sstrncpy (vl->plugin, "libvirt", sizeof (vl->plugin));
726 vl->host[0] = '\0';
727 host_ptr = vl->host;
728 host_len = sizeof (vl->host);
730 /* Construct the hostname field according to HostnameFormat. */
731 for (i = 0; i < HF_MAX_FIELDS; ++i) {
732 if (hostname_format[i] == hf_none)
733 continue;
735 n = DATA_MAX_NAME_LEN - strlen (vl->host) - 2;
737 if (i > 0 && n >= 1) {
738 strncat (vl->host, ":", 1);
739 n--;
740 }
742 switch (hostname_format[i]) {
743 case hf_none: break;
744 case hf_hostname:
745 strncat (vl->host, hostname_g, n);
746 break;
747 case hf_name:
748 name = virDomainGetName (dom);
749 if (name)
750 strncat (vl->host, name, n);
751 break;
752 case hf_uuid:
753 if (virDomainGetUUIDString (dom, uuid) == 0)
754 strncat (vl->host, uuid, n);
755 break;
756 }
757 }
759 vl->host[sizeof (vl->host) - 1] = '\0';
760 } /* void init_value_list */
762 static void
763 cpu_submit (unsigned long long cpu_time,
764 time_t t,
765 virDomainPtr dom, const char *type)
766 {
767 value_t values[1];
768 value_list_t vl = VALUE_LIST_INIT;
770 init_value_list (&vl, t, dom);
772 values[0].counter = cpu_time;
774 vl.values = values;
775 vl.values_len = 1;
777 sstrncpy (vl.type, type, sizeof (vl.type));
779 plugin_dispatch_values (&vl);
780 }
782 static void
783 vcpu_submit (counter_t cpu_time,
784 time_t t,
785 virDomainPtr dom, int vcpu_nr, const char *type)
786 {
787 value_t values[1];
788 value_list_t vl = VALUE_LIST_INIT;
790 init_value_list (&vl, t, dom);
792 values[0].counter = cpu_time;
793 vl.values = values;
794 vl.values_len = 1;
796 sstrncpy (vl.type, type, sizeof (vl.type));
797 ssnprintf (vl.type_instance, sizeof (vl.type_instance), "%d", vcpu_nr);
799 plugin_dispatch_values (&vl);
800 }
802 static void
803 submit_counter2 (const char *type, counter_t v0, counter_t v1,
804 time_t t,
805 virDomainPtr dom, const char *devname)
806 {
807 value_t values[2];
808 value_list_t vl = VALUE_LIST_INIT;
810 init_value_list (&vl, t, dom);
812 values[0].counter = v0;
813 values[1].counter = v1;
814 vl.values = values;
815 vl.values_len = 2;
817 sstrncpy (vl.type, type, sizeof (vl.type));
818 sstrncpy (vl.type_instance, devname, sizeof (vl.type_instance));
820 plugin_dispatch_values (&vl);
821 } /* void submit_counter2 */
823 static int
824 lv_shutdown (void)
825 {
826 free_block_devices ();
827 free_interface_devices ();
828 free_domains ();
830 if (conn != NULL)
831 virConnectClose (conn);
832 conn = NULL;
834 ignorelist_free (il_domains);
835 il_domains = NULL;
836 ignorelist_free (il_block_devices);
837 il_block_devices = NULL;
838 ignorelist_free (il_interface_devices);
839 il_interface_devices = NULL;
841 return 0;
842 }
844 void
845 module_register (void)
846 {
847 plugin_register_config ("libvirt",
848 lv_config,
849 config_keys, NR_CONFIG_KEYS);
850 plugin_register_init ("libvirt", lv_init);
851 plugin_register_read ("libvirt", lv_read);
852 plugin_register_shutdown ("libvirt", lv_shutdown);
853 }
855 /*
856 * vim: shiftwidth=4 tabstop=8 softtabstop=4 expandtab fdm=marker
857 */