+ if (swap_in > 0 || swap_out > 0) {
+ submit(domain, "swap_io", "in", &(value_t){.gauge = swap_in}, 1);
+ submit(domain, "swap_io", "out", &(value_t){.gauge = swap_out}, 1);
+ }
+
+ if (min_flt > 0 || maj_flt > 0) {
+ value_t values[] = {
+ {.gauge = (gauge_t)min_flt}, {.gauge = (gauge_t)maj_flt},
+ };
+ submit(domain, "ps_pagefaults", NULL, values, STATIC_ARRAY_SIZE(values));
+ }
+
+ sfree(minfo);
+ return 0;
+}
+
+#ifdef HAVE_DISK_ERR
+static void disk_err_submit(virDomainPtr domain,
+ virDomainDiskErrorPtr disk_err) {
+ submit(domain, "disk_error", disk_err->disk,
+ &(value_t){.gauge = disk_err->error}, 1);
+}
+
+static int get_disk_err(virDomainPtr domain) {
+ /* Get preferred size of disk errors array */
+ int disk_err_count = virDomainGetDiskErrors(domain, NULL, 0, 0);
+ if (disk_err_count == -1) {
+ ERROR(PLUGIN_NAME
+ " plugin: failed to get preferred size of disk errors array");
+
+ virErrorPtr err = virConnGetLastError(conn);
+
+ if (err->code == VIR_ERR_NO_SUPPORT) {
+ ERROR(PLUGIN_NAME
+ " plugin: Disabled unsupported ExtraStats selector: disk_err");
+ extra_stats &= ~(ex_stats_disk_err);
+ }
+
+ return -1;
+ }
+
+ DEBUG(PLUGIN_NAME
+ " plugin: preferred size of disk errors array: %d for domain %s",
+ disk_err_count, virDomainGetName(domain));
+ virDomainDiskError disk_err[disk_err_count];
+
+ disk_err_count = virDomainGetDiskErrors(domain, disk_err, disk_err_count, 0);
+ if (disk_err_count == -1) {
+ ERROR(PLUGIN_NAME " plugin: virDomainGetDiskErrors failed with status %d",
+ disk_err_count);
+ return -1;
+ }
+
+ DEBUG(PLUGIN_NAME " plugin: detected %d disk errors in domain %s",
+ disk_err_count, virDomainGetName(domain));
+
+ for (int i = 0; i < disk_err_count; ++i) {
+ disk_err_submit(domain, &disk_err[i]);
+ sfree(disk_err[i].disk);
+ }
+
+ return 0;
+}
+#endif /* HAVE_DISK_ERR */
+
+static int get_block_device_stats(struct block_device *block_dev) {
+ if (!block_dev) {
+ ERROR(PLUGIN_NAME " plugin: get_block_stats NULL pointer");
+ return -1;
+ }
+
+ virDomainBlockInfo binfo;
+ init_block_info(&binfo);
+
+ /* Fetching block info stats only if needed*/
+ if (extra_stats & (ex_stats_disk_allocation | ex_stats_disk_capacity |
+ ex_stats_disk_physical)) {
+ /* Block info statistics can be only fetched from devices with 'source'
+ * defined */
+ if (block_dev->has_source) {
+ if (virDomainGetBlockInfo(block_dev->dom, block_dev->path, &binfo, 0) <
+ 0) {
+ ERROR(PLUGIN_NAME " plugin: virDomainGetBlockInfo failed for path: %s",
+ block_dev->path);
+
+ virErrorPtr err = virConnGetLastError(conn);
+ if (err->code == VIR_ERR_NO_SUPPORT) {
+
+ if (extra_stats & ex_stats_disk_allocation)
+ ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats "
+ "selector: disk_allocation");
+ if (extra_stats & ex_stats_disk_capacity)
+ ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats "
+ "selector: disk_capacity");
+ if (extra_stats & ex_stats_disk_physical)
+ ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats "
+ "selector: disk_physical");
+
+ extra_stats &= ~(ex_stats_disk_allocation | ex_stats_disk_capacity |
+ ex_stats_disk_physical);
+ }
+
+ return -1;
+ }
+ }
+ }
+
+ struct lv_block_stats bstats;
+ init_block_stats(&bstats);
+
+ if (lv_domain_block_stats(block_dev->dom, block_dev->path, &bstats) < 0) {
+ ERROR(PLUGIN_NAME " plugin: lv_domain_block_stats failed");
+ return -1;
+ }
+
+ disk_block_stats_submit(&bstats, block_dev->dom, block_dev->path, &binfo);
+ return 0;
+}
+
+#ifdef HAVE_FS_INFO
+
+#define NM_ADD_ITEM(_fun, _name, _val) \
+ do { \
+ ret = _fun(¬if, _name, _val); \
+ if (ret != 0) { \
+ ERROR(PLUGIN_NAME " plugin: failed to add notification metadata"); \
+ goto cleanup; \
+ } \
+ } while (0)
+
+#define NM_ADD_STR_ITEMS(_items, _size) \
+ do { \
+ for (size_t _i = 0; _i < _size; ++_i) { \
+ DEBUG(PLUGIN_NAME \
+ " plugin: Adding notification metadata name=%s value=%s", \
+ _items[_i].name, _items[_i].value); \
+ NM_ADD_ITEM(plugin_notification_meta_add_string, _items[_i].name, \
+ _items[_i].value); \
+ } \
+ } while (0)
+
+static int fs_info_notify(virDomainPtr domain, virDomainFSInfoPtr fs_info) {
+ notification_t notif;
+ int ret = 0;
+
+ /* Local struct, just for the purpose of this function. */
+ typedef struct nm_str_item_s {
+ const char *name;
+ const char *value;
+ } nm_str_item_t;
+
+ nm_str_item_t fs_dev_alias[fs_info->ndevAlias];
+ nm_str_item_t fs_str_items[] = {
+ {.name = "mountpoint", .value = fs_info->mountpoint},
+ {.name = "name", .value = fs_info->name},
+ {.name = "fstype", .value = fs_info->fstype}};
+
+ for (size_t i = 0; i < fs_info->ndevAlias; ++i) {
+ fs_dev_alias[i].name = "devAlias";
+ fs_dev_alias[i].value = fs_info->devAlias[i];
+ }
+
+ init_notif(¬if, domain, NOTIF_OKAY, "File system information",
+ "file_system", NULL);
+ NM_ADD_STR_ITEMS(fs_str_items, STATIC_ARRAY_SIZE(fs_str_items));
+ NM_ADD_ITEM(plugin_notification_meta_add_unsigned_int, "ndevAlias",
+ fs_info->ndevAlias);
+ NM_ADD_STR_ITEMS(fs_dev_alias, fs_info->ndevAlias);
+
+ plugin_dispatch_notification(¬if);
+
+cleanup:
+ if (notif.meta)
+ plugin_notification_meta_free(notif.meta);
+ return ret;
+}
+
+#undef RETURN_ON_ERR
+#undef NM_ADD_STR_ITEMS
+
+static int get_fs_info(virDomainPtr domain) {
+ virDomainFSInfoPtr *fs_info = NULL;
+ int ret = 0;
+
+ int mount_points_cnt = virDomainGetFSInfo(domain, &fs_info, 0);
+ if (mount_points_cnt == -1) {
+ ERROR(PLUGIN_NAME " plugin: virDomainGetFSInfo failed: %d",
+ mount_points_cnt);
+
+ virErrorPtr err = virConnGetLastError(conn);
+ if (err->code == VIR_ERR_NO_SUPPORT) {
+ ERROR(PLUGIN_NAME
+ " plugin: Disabled unsupported ExtraStats selector: fs_info");
+ extra_stats &= ~(ex_stats_fs_info);
+ }
+
+ return -1;
+ }
+
+ for (int i = 0; i < mount_points_cnt; ++i) {
+ if (fs_info_notify(domain, fs_info[i]) != 0) {
+ ERROR(PLUGIN_NAME " plugin: failed to send file system notification "
+ "for mount point %s",
+ fs_info[i]->mountpoint);
+ ret = -1;
+ }
+ virDomainFSInfoFree(fs_info[i]);
+ }
+
+ sfree(fs_info);
+ return ret;
+}
+
+#endif /* HAVE_FS_INFO */
+
+#ifdef HAVE_JOB_STATS
+static void job_stats_submit(virDomainPtr domain, virTypedParameterPtr param) {
+ value_t vl = {0};
+
+ if (param->type == VIR_TYPED_PARAM_INT)
+ vl.derive = param->value.i;
+ else if (param->type == VIR_TYPED_PARAM_UINT)
+ vl.derive = param->value.ui;
+ else if (param->type == VIR_TYPED_PARAM_LLONG)
+ vl.derive = param->value.l;
+ else if (param->type == VIR_TYPED_PARAM_ULLONG)
+ vl.derive = param->value.ul;
+ else if (param->type == VIR_TYPED_PARAM_DOUBLE)
+ vl.derive = param->value.d;
+ else if (param->type == VIR_TYPED_PARAM_BOOLEAN)
+ vl.derive = param->value.b;
+ else if (param->type == VIR_TYPED_PARAM_STRING) {
+ submit_notif(domain, NOTIF_OKAY, param->value.s, "job_stats", param->field);
+ return;
+ } else {
+ ERROR(PLUGIN_NAME " plugin: unrecognized virTypedParameterType");
+ return;
+ }
+
+ submit(domain, "job_stats", param->field, &vl, 1);
+}
+
+static int get_job_stats(virDomainPtr domain) {
+ int job_type = 0;
+ int nparams = 0;
+ virTypedParameterPtr params = NULL;
+ int flags = (extra_stats & ex_stats_job_stats_completed)
+ ? VIR_DOMAIN_JOB_STATS_COMPLETED
+ : 0;
+
+ int ret = virDomainGetJobStats(domain, &job_type, ¶ms, &nparams, flags);
+ if (ret != 0) {
+ ERROR(PLUGIN_NAME " plugin: virDomainGetJobStats failed: %d", ret);
+
+ virErrorPtr err = virConnGetLastError(conn);
+ // VIR_ERR_INVALID_ARG returned when VIR_DOMAIN_JOB_STATS_COMPLETED flag is
+ // not supported by driver
+ if (err->code == VIR_ERR_NO_SUPPORT || err->code == VIR_ERR_INVALID_ARG) {
+ if (extra_stats & ex_stats_job_stats_completed)
+ ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: "
+ "job_stats_completed");
+ if (extra_stats & ex_stats_job_stats_background)
+ ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: "
+ "job_stats_background");
+ extra_stats &=
+ ~(ex_stats_job_stats_completed | ex_stats_job_stats_background);
+ }
+ return -1;
+ }
+
+ DEBUG(PLUGIN_NAME " plugin: job_type=%d nparams=%d", job_type, nparams);
+
+ for (int i = 0; i < nparams; ++i) {
+ DEBUG(PLUGIN_NAME " plugin: param[%d] field=%s type=%d", i, params[i].field,
+ params[i].type);
+ job_stats_submit(domain, ¶ms[i]);
+ }
+
+ virTypedParamsFree(params, nparams);
+ return 0;
+}
+#endif /* HAVE_JOB_STATS */
+
+static int get_domain_metrics(domain_t *domain) {
+ if (!domain || !domain->ptr) {
+ ERROR(PLUGIN_NAME " plugin: get_domain_metrics: NULL pointer");
+ return -1;
+ }
+
+ virDomainInfo info;
+ int status = virDomainGetInfo(domain->ptr, &info);
+ if (status != 0) {
+ ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
+ status);
+ return -1;
+ }
+
+ if (extra_stats & ex_stats_domain_state) {
+#ifdef HAVE_DOM_REASON
+ /* At this point we already know domain's state from virDomainGetInfo call,
+ * however it doesn't provide a reason for entering particular state.
+ * We need to get it from virDomainGetState.
+ */
+ GET_STATS(submit_domain_state, "domain reason", domain->ptr);
+#endif
+ }
+
+ /* Gather remaining stats only for running domains */
+ if (info.state != VIR_DOMAIN_RUNNING)
+ return 0;
+
+#ifdef HAVE_CPU_STATS
+ if (extra_stats & ex_stats_pcpu)
+ get_pcpu_stats(domain->ptr);
+#endif
+
+ cpu_submit(domain, info.cpuTime);
+
+ memory_submit(domain->ptr, (gauge_t)info.memory * 1024);
+
+ if (extra_stats & (ex_stats_vcpu | ex_stats_vcpupin))
+ GET_STATS(get_vcpu_stats, "vcpu stats", domain->ptr, info.nrVirtCpu);
+ if (extra_stats & ex_stats_memory)
+ GET_STATS(get_memory_stats, "memory stats", domain->ptr);
+
+#ifdef HAVE_PERF_STATS
+ if (extra_stats & ex_stats_perf)
+ GET_STATS(get_perf_events, "performance monitoring events", domain->ptr);
+#endif
+
+#ifdef HAVE_FS_INFO
+ if (extra_stats & ex_stats_fs_info)
+ GET_STATS(get_fs_info, "file system info", domain->ptr);
+#endif
+
+#ifdef HAVE_DISK_ERR
+ if (extra_stats & ex_stats_disk_err)
+ GET_STATS(get_disk_err, "disk errors", domain->ptr);
+#endif
+
+#ifdef HAVE_JOB_STATS
+ if (extra_stats &
+ (ex_stats_job_stats_completed | ex_stats_job_stats_background))
+ GET_STATS(get_job_stats, "job stats", domain->ptr);
+#endif
+
+ /* Update cached virDomainInfo. It has to be done after cpu_submit */
+ memcpy(&domain->info, &info, sizeof(domain->info));
+
+ return 0;
+}
+
+static int get_if_dev_stats(struct interface_device *if_dev) {
+ virDomainInterfaceStatsStruct stats = {0};
+ char *display_name = NULL;
+
+ if (!if_dev) {
+ ERROR(PLUGIN_NAME " plugin: get_if_dev_stats: NULL pointer");
+ return -1;
+ }
+
+ switch (interface_format) {
+ case if_address:
+ display_name = if_dev->address;
+ break;
+ case if_number:
+ display_name = if_dev->number;
+ break;
+ case if_name:
+ default:
+ display_name = if_dev->path;
+ }
+
+ if (virDomainInterfaceStats(if_dev->dom, if_dev->path, &stats,
+ sizeof(stats)) != 0) {
+ ERROR(PLUGIN_NAME " plugin: virDomainInterfaceStats failed");
+ return -1;
+ }
+
+ if ((stats.rx_bytes != -1) && (stats.tx_bytes != -1))
+ submit_derive2("if_octets", (derive_t)stats.rx_bytes,
+ (derive_t)stats.tx_bytes, if_dev->dom, display_name);
+
+ if ((stats.rx_packets != -1) && (stats.tx_packets != -1))
+ submit_derive2("if_packets", (derive_t)stats.rx_packets,
+ (derive_t)stats.tx_packets, if_dev->dom, display_name);
+
+ if ((stats.rx_errs != -1) && (stats.tx_errs != -1))
+ submit_derive2("if_errors", (derive_t)stats.rx_errs,
+ (derive_t)stats.tx_errs, if_dev->dom, display_name);
+
+ if ((stats.rx_drop != -1) && (stats.tx_drop != -1))
+ submit_derive2("if_dropped", (derive_t)stats.rx_drop,
+ (derive_t)stats.tx_drop, if_dev->dom, display_name);
+ return 0;
+}
+
+static int domain_lifecycle_event_cb(__attribute__((unused)) virConnectPtr con_,
+ virDomainPtr dom, int event, int detail,
+ __attribute__((unused)) void *opaque) {
+ int domain_state = map_domain_event_to_state(event);
+ int domain_reason = 0; /* 0 means UNKNOWN reason for any state */
+#ifdef HAVE_DOM_REASON
+ domain_reason = map_domain_event_detail_to_reason(event, detail);
+#endif
+ domain_state_submit_notif(dom, domain_state, domain_reason);
+
+ return 0;
+}
+
+static void virt_eventloop_timeout_cb(int timer ATTRIBUTE_UNUSED,
+ void *timer_info) {}
+
+static int register_event_impl(void) {
+ if (virEventRegisterDefaultImpl() < 0) {
+ virErrorPtr err = virGetLastError();
+ ERROR(PLUGIN_NAME
+ " plugin: error while event implementation registering: %s",
+ err && err->message ? err->message : "Unknown error");
+ return -1;
+ }
+
+ if (virEventAddTimeout(CDTIME_T_TO_MS(plugin_get_interval()),
+ virt_eventloop_timeout_cb, NULL, NULL) < 0) {
+ virErrorPtr err = virGetLastError();
+ ERROR(PLUGIN_NAME " plugin: virEventAddTimeout failed: %s",
+ err && err->message ? err->message : "Unknown error");
+ return -1;
+ }
+
+ return 0;
+}
+
+static void virt_notif_thread_set_active(virt_notif_thread_t *thread_data,
+ const bool active) {
+ assert(thread_data != NULL);
+ pthread_mutex_lock(&thread_data->active_mutex);
+ thread_data->is_active = active;
+ pthread_mutex_unlock(&thread_data->active_mutex);
+}
+
+static bool virt_notif_thread_is_active(virt_notif_thread_t *thread_data) {
+ bool active = false;
+
+ assert(thread_data != NULL);
+ pthread_mutex_lock(&thread_data->active_mutex);
+ active = thread_data->is_active;
+ pthread_mutex_unlock(&thread_data->active_mutex);
+
+ return active;
+}
+
+/* worker function running default event implementation */
+static void *event_loop_worker(void *arg) {
+ virt_notif_thread_t *thread_data = (virt_notif_thread_t *)arg;
+
+ while (virt_notif_thread_is_active(thread_data)) {
+ if (virEventRunDefaultImpl() < 0) {
+ virErrorPtr err = virGetLastError();
+ ERROR(PLUGIN_NAME " plugin: failed to run event loop: %s\n",
+ err && err->message ? err->message : "Unknown error");
+ }
+ }
+
+ return NULL;
+}
+
+static int virt_notif_thread_init(virt_notif_thread_t *thread_data) {
+ assert(thread_data != NULL);
+
+ int ret = pthread_mutex_init(&thread_data->active_mutex, NULL);
+ if (ret != 0) {
+ ERROR(PLUGIN_NAME " plugin: Failed to initialize mutex, err %u", ret);
+ return ret;
+ }
+
+ /**
+ * '0' and positive integers are meaningful ID's, therefore setting
+ * domain_event_cb_id to '-1'
+ */
+ thread_data->domain_event_cb_id = -1;
+ pthread_mutex_lock(&thread_data->active_mutex);
+ thread_data->is_active = false;
+ pthread_mutex_unlock(&thread_data->active_mutex);
+
+ return 0;
+}
+
+/* register domain event callback and start event loop thread */
+static int start_event_loop(virt_notif_thread_t *thread_data) {
+ assert(thread_data != NULL);
+ thread_data->domain_event_cb_id = virConnectDomainEventRegisterAny(
+ conn, NULL, VIR_DOMAIN_EVENT_ID_LIFECYCLE,
+ VIR_DOMAIN_EVENT_CALLBACK(domain_lifecycle_event_cb), NULL, NULL);
+ if (thread_data->domain_event_cb_id == -1) {
+ ERROR(PLUGIN_NAME " plugin: error while callback registering");
+ return -1;
+ }
+
+ DEBUG(PLUGIN_NAME " plugin: starting event loop");
+
+ virt_notif_thread_set_active(thread_data, 1);
+ if (pthread_create(&thread_data->event_loop_tid, NULL, event_loop_worker,
+ thread_data)) {
+ ERROR(PLUGIN_NAME " plugin: failed event loop thread creation");
+ virt_notif_thread_set_active(thread_data, 0);
+ virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
+ thread_data->domain_event_cb_id = -1;
+ return -1;
+ }
+
+ return 0;
+}
+
+/* stop event loop thread and deregister callback */
+static void stop_event_loop(virt_notif_thread_t *thread_data) {
+
+ DEBUG(PLUGIN_NAME " plugin: stopping event loop");
+
+ /* Stopping loop */
+ if (virt_notif_thread_is_active(thread_data)) {
+ virt_notif_thread_set_active(thread_data, 0);
+ if (pthread_join(notif_thread.event_loop_tid, NULL) != 0)
+ ERROR(PLUGIN_NAME " plugin: stopping notification thread failed");
+ }
+
+ /* ... and de-registering event handler */
+ if (conn != NULL && thread_data->domain_event_cb_id != -1) {
+ virConnectDomainEventDeregisterAny(conn, thread_data->domain_event_cb_id);
+ thread_data->domain_event_cb_id = -1;
+ }
+}
+
+static int persistent_domains_state_notification(void) {
+ int status = 0;
+ int n;
+#ifdef HAVE_LIST_ALL_DOMAINS
+ virDomainPtr *domains = NULL;
+ n = virConnectListAllDomains(conn, &domains,
+ VIR_CONNECT_LIST_DOMAINS_PERSISTENT);
+ if (n < 0) {
+ VIRT_ERROR(conn, "reading list of persistent domains");
+ status = -1;
+ } else {
+ DEBUG(PLUGIN_NAME " plugin: getting state of %i persistent domains", n);
+ /* Fetch each persistent domain's state and notify it */
+ int n_notified = n;
+ for (int i = 0; i < n; ++i) {
+ status = get_domain_state_notify(domains[i]);
+ if (status != 0) {
+ n_notified--;
+ ERROR(PLUGIN_NAME " plugin: could not notify state of domain %s",
+ virDomainGetName(domains[i]));
+ }
+ virDomainFree(domains[i]);
+ }
+
+ sfree(domains);
+ DEBUG(PLUGIN_NAME " plugin: notified state of %i persistent domains",
+ n_notified);
+ }
+#else
+ n = virConnectNumOfDomains(conn);
+ if (n > 0) {
+ int *domids;
+ /* Get list of domains. */
+ domids = calloc(n, sizeof(*domids));
+ if (domids == NULL) {
+ ERROR(PLUGIN_NAME " plugin: calloc failed.");
+ return -1;
+ }
+ n = virConnectListDomains(conn, domids, n);
+ if (n < 0) {
+ VIRT_ERROR(conn, "reading list of domains");
+ sfree(domids);
+ return -1;
+ }
+ /* Fetch info of each active domain and notify it */
+ for (int i = 0; i < n; ++i) {
+ virDomainInfo info;
+ virDomainPtr dom = NULL;
+ dom = virDomainLookupByID(conn, domids[i]);
+ if (dom == NULL) {
+ VIRT_ERROR(conn, "virDomainLookupByID");
+ /* Could be that the domain went away -- ignore it anyway. */
+ continue;
+ }
+ status = virDomainGetInfo(dom, &info);
+ if (status == 0)
+ /* virDomainGetState is not available. Submit 0, which corresponds to
+ * unknown reason. */
+ domain_state_submit_notif(dom, info.state, 0);
+ else
+ ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.",
+ status);
+
+ virDomainFree(dom);
+ }
+ sfree(domids);
+ }
+#endif