/** * collectd - src/virt.c * Copyright (C) 2006-2008 Red Hat Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the * Free Software Foundation; only version 2 of the license is applicable. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * * Authors: * Richard W.M. Jones * Przemyslaw Szczerbik **/ #include "collectd.h" #include "plugin.h" #include "utils/common/common.h" #include "utils/ignorelist/ignorelist.h" #include "utils_complain.h" #include /* for basename(3) */ #include #include #include #include #include #include #include /* Plugin name */ #define PLUGIN_NAME "virt" /* Secure strcat macro assuring null termination. Parameter (n) is the size of buffer (d), allowing this macro to be safe for static and dynamic buffers */ #define SSTRNCAT(d, s, n) \ do { \ size_t _l = strlen(d); \ sstrncpy((d) + _l, (s), (n)-_l); \ } while (0) #ifdef LIBVIR_CHECK_VERSION #if LIBVIR_CHECK_VERSION(0, 9, 2) #define HAVE_DOM_REASON 1 #endif #if LIBVIR_CHECK_VERSION(0, 9, 5) #define HAVE_BLOCK_STATS_FLAGS 1 #define HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN 1 #endif #if LIBVIR_CHECK_VERSION(0, 9, 10) #define HAVE_DISK_ERR 1 #endif #if LIBVIR_CHECK_VERSION(0, 9, 11) #define HAVE_CPU_STATS 1 #define HAVE_DOM_STATE_PMSUSPENDED 1 #define HAVE_DOM_REASON_RUNNING_WAKEUP 1 #endif /* virConnectListAllDomains() appeared in 0.10.2 (Sep 2012) Note that LIBVIR_CHECK_VERSION appeared a year later (Dec 2013, libvirt-1.2.0), so in some systems which actually have virConnectListAllDomains() we can't detect this. */ #if LIBVIR_CHECK_VERSION(0, 10, 2) #define HAVE_LIST_ALL_DOMAINS 1 #endif #if LIBVIR_CHECK_VERSION(1, 0, 1) #define HAVE_DOM_REASON_PAUSED_SNAPSHOT 1 #endif #if LIBVIR_CHECK_VERSION(1, 1, 1) #define HAVE_DOM_REASON_PAUSED_CRASHED 1 #endif #if LIBVIR_CHECK_VERSION(1, 2, 9) #define HAVE_JOB_STATS 1 #endif #if LIBVIR_CHECK_VERSION(1, 2, 10) #define HAVE_DOM_REASON_CRASHED 1 #endif #if LIBVIR_CHECK_VERSION(1, 2, 11) #define HAVE_FS_INFO 1 #endif #if LIBVIR_CHECK_VERSION(1, 2, 15) #define HAVE_DOM_REASON_PAUSED_STARTING_UP 1 #endif #if LIBVIR_CHECK_VERSION(1, 3, 3) #define HAVE_PERF_STATS 1 #define HAVE_DOM_REASON_POSTCOPY 1 #endif #if LIBVIR_CHECK_VERSION(4, 10, 0) #define HAVE_DOM_REASON_SHUTOFF_DAEMON 1 #endif #endif /* LIBVIR_CHECK_VERSION */ /* structure used for aggregating notification-thread data*/ typedef struct virt_notif_thread_s { pthread_t event_loop_tid; int domain_event_cb_id; pthread_mutex_t active_mutex; /* protects 'is_active' member access*/ bool is_active; } virt_notif_thread_t; /* PersistentNotification is false by default */ static bool persistent_notification = false; static bool report_block_devices = true; static bool report_network_interfaces = true; /* Thread used for handling libvirt notifications events */ static virt_notif_thread_t notif_thread; const char *domain_states[] = { [VIR_DOMAIN_NOSTATE] = "no state", [VIR_DOMAIN_RUNNING] = "the domain is running", [VIR_DOMAIN_BLOCKED] = "the domain is blocked on resource", [VIR_DOMAIN_PAUSED] = "the domain is paused by user", [VIR_DOMAIN_SHUTDOWN] = "the domain is being shut down", [VIR_DOMAIN_SHUTOFF] = "the domain is shut off", [VIR_DOMAIN_CRASHED] = "the domain is crashed", #ifdef HAVE_DOM_STATE_PMSUSPENDED [VIR_DOMAIN_PMSUSPENDED] = "the domain is suspended by guest power management", #endif }; static int map_domain_event_to_state(int event) { int ret; switch (event) { case VIR_DOMAIN_EVENT_STARTED: ret = VIR_DOMAIN_RUNNING; break; case VIR_DOMAIN_EVENT_SUSPENDED: ret = VIR_DOMAIN_PAUSED; break; case VIR_DOMAIN_EVENT_RESUMED: ret = VIR_DOMAIN_RUNNING; break; case VIR_DOMAIN_EVENT_STOPPED: ret = VIR_DOMAIN_SHUTOFF; break; case VIR_DOMAIN_EVENT_SHUTDOWN: ret = VIR_DOMAIN_SHUTDOWN; break; #ifdef HAVE_DOM_STATE_PMSUSPENDED case VIR_DOMAIN_EVENT_PMSUSPENDED: ret = VIR_DOMAIN_PMSUSPENDED; break; #endif #ifdef HAVE_DOM_REASON_CRASHED case VIR_DOMAIN_EVENT_CRASHED: ret = VIR_DOMAIN_CRASHED; break; #endif default: ret = VIR_DOMAIN_NOSTATE; } return ret; } #ifdef HAVE_DOM_REASON static int map_domain_event_detail_to_reason(int event, int detail) { int ret; switch (event) { case VIR_DOMAIN_EVENT_STARTED: switch (detail) { case VIR_DOMAIN_EVENT_STARTED_BOOTED: /* Normal startup from boot */ ret = VIR_DOMAIN_RUNNING_BOOTED; break; case VIR_DOMAIN_EVENT_STARTED_MIGRATED: /* Incoming migration from another host */ ret = VIR_DOMAIN_RUNNING_MIGRATED; break; case VIR_DOMAIN_EVENT_STARTED_RESTORED: /* Restored from a state file */ ret = VIR_DOMAIN_RUNNING_RESTORED; break; case VIR_DOMAIN_EVENT_STARTED_FROM_SNAPSHOT: /* Restored from snapshot */ ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT; break; #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP case VIR_DOMAIN_EVENT_STARTED_WAKEUP: /* Started due to wakeup event */ ret = VIR_DOMAIN_RUNNING_WAKEUP; break; #endif default: ret = VIR_DOMAIN_RUNNING_UNKNOWN; } break; case VIR_DOMAIN_EVENT_SUSPENDED: switch (detail) { case VIR_DOMAIN_EVENT_SUSPENDED_PAUSED: /* Normal suspend due to admin pause */ ret = VIR_DOMAIN_PAUSED_USER; break; case VIR_DOMAIN_EVENT_SUSPENDED_MIGRATED: /* Suspended for offline migration */ ret = VIR_DOMAIN_PAUSED_MIGRATION; break; case VIR_DOMAIN_EVENT_SUSPENDED_IOERROR: /* Suspended due to a disk I/O error */ ret = VIR_DOMAIN_PAUSED_IOERROR; break; case VIR_DOMAIN_EVENT_SUSPENDED_WATCHDOG: /* Suspended due to a watchdog firing */ ret = VIR_DOMAIN_PAUSED_WATCHDOG; break; case VIR_DOMAIN_EVENT_SUSPENDED_RESTORED: /* Restored from paused state file */ ret = VIR_DOMAIN_PAUSED_UNKNOWN; break; case VIR_DOMAIN_EVENT_SUSPENDED_FROM_SNAPSHOT: /* Restored from paused snapshot */ ret = VIR_DOMAIN_PAUSED_FROM_SNAPSHOT; break; case VIR_DOMAIN_EVENT_SUSPENDED_API_ERROR: /* Suspended after failure during libvirt API call */ ret = VIR_DOMAIN_PAUSED_UNKNOWN; break; #ifdef HAVE_DOM_REASON_POSTCOPY case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY: /* Suspended for post-copy migration */ ret = VIR_DOMAIN_PAUSED_POSTCOPY; break; case VIR_DOMAIN_EVENT_SUSPENDED_POSTCOPY_FAILED: /* Suspended after failed post-copy */ ret = VIR_DOMAIN_PAUSED_POSTCOPY_FAILED; break; #endif default: ret = VIR_DOMAIN_PAUSED_UNKNOWN; } break; case VIR_DOMAIN_EVENT_RESUMED: switch (detail) { case VIR_DOMAIN_EVENT_RESUMED_UNPAUSED: /* Normal resume due to admin unpause */ ret = VIR_DOMAIN_RUNNING_UNPAUSED; break; case VIR_DOMAIN_EVENT_RESUMED_MIGRATED: /* Resumed for completion of migration */ ret = VIR_DOMAIN_RUNNING_MIGRATED; break; case VIR_DOMAIN_EVENT_RESUMED_FROM_SNAPSHOT: /* Resumed from snapshot */ ret = VIR_DOMAIN_RUNNING_FROM_SNAPSHOT; break; #ifdef HAVE_DOM_REASON_POSTCOPY case VIR_DOMAIN_EVENT_RESUMED_POSTCOPY: /* Resumed, but migration is still running in post-copy mode */ ret = VIR_DOMAIN_RUNNING_POSTCOPY; break; #endif default: ret = VIR_DOMAIN_RUNNING_UNKNOWN; } break; case VIR_DOMAIN_EVENT_STOPPED: switch (detail) { case VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN: /* Normal shutdown */ ret = VIR_DOMAIN_SHUTOFF_SHUTDOWN; break; case VIR_DOMAIN_EVENT_STOPPED_DESTROYED: /* Forced poweroff from host */ ret = VIR_DOMAIN_SHUTOFF_DESTROYED; break; case VIR_DOMAIN_EVENT_STOPPED_CRASHED: /* Guest crashed */ ret = VIR_DOMAIN_SHUTOFF_CRASHED; break; case VIR_DOMAIN_EVENT_STOPPED_MIGRATED: /* Migrated off to another host */ ret = VIR_DOMAIN_SHUTOFF_MIGRATED; break; case VIR_DOMAIN_EVENT_STOPPED_SAVED: /* Saved to a state file */ ret = VIR_DOMAIN_SHUTOFF_SAVED; break; case VIR_DOMAIN_EVENT_STOPPED_FAILED: /* Host emulator/mgmt failed */ ret = VIR_DOMAIN_SHUTOFF_FAILED; break; case VIR_DOMAIN_EVENT_STOPPED_FROM_SNAPSHOT: /* Offline snapshot loaded */ ret = VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT; break; default: ret = VIR_DOMAIN_SHUTOFF_UNKNOWN; } break; case VIR_DOMAIN_EVENT_SHUTDOWN: switch (detail) { case VIR_DOMAIN_EVENT_SHUTDOWN_FINISHED: /* Guest finished shutdown sequence */ #ifdef LIBVIR_CHECK_VERSION #if LIBVIR_CHECK_VERSION(3, 4, 0) case VIR_DOMAIN_EVENT_SHUTDOWN_GUEST: /* Domain finished shutting down after request from the guest itself (e.g. hardware-specific action) */ case VIR_DOMAIN_EVENT_SHUTDOWN_HOST: /* Domain finished shutting down after request from the host (e.g. killed by a signal) */ #endif #endif ret = VIR_DOMAIN_SHUTDOWN_USER; break; default: ret = VIR_DOMAIN_SHUTDOWN_UNKNOWN; } break; #ifdef HAVE_DOM_STATE_PMSUSPENDED case VIR_DOMAIN_EVENT_PMSUSPENDED: switch (detail) { case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY: /* Guest was PM suspended to memory */ ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN; break; case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK: /* Guest was PM suspended to disk */ ret = VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN; break; default: ret = VIR_DOMAIN_PMSUSPENDED_UNKNOWN; } break; #endif case VIR_DOMAIN_EVENT_CRASHED: switch (detail) { case VIR_DOMAIN_EVENT_CRASHED_PANICKED: /* Guest was panicked */ ret = VIR_DOMAIN_CRASHED_PANICKED; break; default: ret = VIR_DOMAIN_CRASHED_UNKNOWN; } break; default: ret = VIR_DOMAIN_NOSTATE_UNKNOWN; } return ret; } #define DOMAIN_STATE_REASON_MAX_SIZE 20 const char *domain_reasons[][DOMAIN_STATE_REASON_MAX_SIZE] = { [VIR_DOMAIN_NOSTATE][VIR_DOMAIN_NOSTATE_UNKNOWN] = "the reason is unknown", [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNKNOWN] = "the reason is unknown", [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_BOOTED] = "normal startup from boot", [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATED] = "migrated from another host", [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_RESTORED] = "restored from a state file", [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_FROM_SNAPSHOT] = "restored from snapshot", [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_UNPAUSED] = "returned from paused state", [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_MIGRATION_CANCELED] = "returned from migration", [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_SAVE_CANCELED] = "returned from failed save process", #ifdef HAVE_DOM_REASON_RUNNING_WAKEUP [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_WAKEUP] = "returned from pmsuspended due to wakeup event", #endif #ifdef HAVE_DOM_REASON_CRASHED [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_CRASHED] = "resumed from crashed", #endif #ifdef HAVE_DOM_REASON_POSTCOPY [VIR_DOMAIN_RUNNING][VIR_DOMAIN_RUNNING_POSTCOPY] = "running in post-copy migration mode", #endif [VIR_DOMAIN_BLOCKED][VIR_DOMAIN_BLOCKED_UNKNOWN] = "the reason is unknown", [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_UNKNOWN] = "the reason is unknown", [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_USER] = "paused on user request", [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_MIGRATION] = "paused for offline migration", [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SAVE] = "paused for save", [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_DUMP] = "paused for offline core dump", [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_IOERROR] = "paused due to a disk I/O error", [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_WATCHDOG] = "paused due to a watchdog event", [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_FROM_SNAPSHOT] = "paused after restoring from snapshot", #ifdef HAVE_DOM_REASON_PAUSED_SHUTTING_DOWN [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SHUTTING_DOWN] = "paused during shutdown process", #endif #ifdef HAVE_DOM_REASON_PAUSED_SNAPSHOT [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_SNAPSHOT] = "paused while creating a snapshot", #endif #ifdef HAVE_DOM_REASON_PAUSED_CRASHED [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_CRASHED] = "paused due to a guest crash", #endif #ifdef HAVE_DOM_REASON_PAUSED_STARTING_UP [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_STARTING_UP] = "the domain is being started", #endif #ifdef HAVE_DOM_REASON_POSTCOPY [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY] = "paused for post-copy migration", [VIR_DOMAIN_PAUSED][VIR_DOMAIN_PAUSED_POSTCOPY_FAILED] = "paused after failed post-copy", #endif [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_UNKNOWN] = "the reason is unknown", [VIR_DOMAIN_SHUTDOWN][VIR_DOMAIN_SHUTDOWN_USER] = "shutting down on user request", [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_UNKNOWN] = "the reason is unknown", [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SHUTDOWN] = "normal shutdown", [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DESTROYED] = "forced poweroff", [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_CRASHED] = "domain crashed", [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_MIGRATED] = "migrated to another host", [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_SAVED] = "saved to a file", [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FAILED] = "domain failed to start", [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT] = "restored from a snapshot which was taken while domain was shutoff", #ifdef HAVE_DOM_REASON_SHUTOFF_DAEMON [VIR_DOMAIN_SHUTOFF][VIR_DOMAIN_SHUTOFF_DAEMON] = "daemon decides to kill domain during reconnection processing", #endif [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_UNKNOWN] = "the reason is unknown", #ifdef VIR_DOMAIN_CRASHED_PANICKED [VIR_DOMAIN_CRASHED][VIR_DOMAIN_CRASHED_PANICKED] = "domain panicked", #endif #ifdef HAVE_DOM_STATE_PMSUSPENDED [VIR_DOMAIN_PMSUSPENDED][VIR_DOMAIN_PMSUSPENDED_UNKNOWN] = "the reason is unknown", #endif }; #endif /* HAVE_DOM_REASON */ #define NANOSEC_IN_SEC 1e9 #define GET_STATS(_f, _name, ...) \ do { \ status = _f(__VA_ARGS__); \ if (status != 0) \ ERROR(PLUGIN_NAME " plugin: Failed to get " _name); \ } while (0) /* Connection. */ static virConnectPtr conn; static char *conn_string; static c_complain_t conn_complain = C_COMPLAIN_INIT_STATIC; /* Node information required for %CPU */ static virNodeInfo nodeinfo; /* Seconds between list refreshes, 0 disables completely. */ static int interval = 60; /* List of domains, if specified. */ static ignorelist_t *il_domains; /* List of block devices, if specified. */ static ignorelist_t *il_block_devices; /* List of network interface devices, if specified. */ static ignorelist_t *il_interface_devices; static int ignore_device_match(ignorelist_t *, const char *domname, const char *devpath); /* Actual list of block devices found on last refresh. */ struct block_device { virDomainPtr dom; /* domain */ char *path; /* name of block device */ bool has_source; /* information whether source is defined or not */ }; /* Actual list of network interfaces found on last refresh. */ struct interface_device { virDomainPtr dom; /* domain */ char *path; /* name of interface device */ char *address; /* mac address of interface device */ char *number; /* interface device number */ }; typedef struct domain_s { virDomainPtr ptr; virDomainInfo info; bool active; } domain_t; struct lv_read_state { /* Actual list of domains found on last refresh. */ domain_t *domains; int nr_domains; struct block_device *block_devices; int nr_block_devices; struct interface_device *interface_devices; int nr_interface_devices; }; static void free_domains(struct lv_read_state *state); static int add_domain(struct lv_read_state *state, virDomainPtr dom, bool active); static void free_block_devices(struct lv_read_state *state); static int add_block_device(struct lv_read_state *state, virDomainPtr dom, const char *path, bool has_source); static void free_interface_devices(struct lv_read_state *state); static int add_interface_device(struct lv_read_state *state, virDomainPtr dom, const char *path, const char *address, unsigned int number); #define METADATA_VM_PARTITION_URI "http://ovirt.org/ovirtmap/tag/1.0" #define METADATA_VM_PARTITION_ELEMENT "tag" #define METADATA_VM_PARTITION_PREFIX "ovirtmap" #define BUFFER_MAX_LEN 256 #define PARTITION_TAG_MAX_LEN 32 struct lv_read_instance { struct lv_read_state read_state; char tag[PARTITION_TAG_MAX_LEN]; size_t id; }; struct lv_user_data { struct lv_read_instance inst; user_data_t ud; }; #define NR_INSTANCES_DEFAULT 1 #define NR_INSTANCES_MAX 128 static int nr_instances = NR_INSTANCES_DEFAULT; static struct lv_user_data lv_read_user_data[NR_INSTANCES_MAX]; /* HostnameFormat. */ #define HF_MAX_FIELDS 4 enum hf_field { hf_none = 0, hf_hostname, hf_name, hf_uuid, hf_metadata }; static enum hf_field hostname_format[HF_MAX_FIELDS] = {hf_name}; /* PluginInstanceFormat */ #define PLGINST_MAX_FIELDS 3 enum plginst_field { plginst_none = 0, plginst_name, plginst_uuid, plginst_metadata }; static enum plginst_field plugin_instance_format[PLGINST_MAX_FIELDS] = { plginst_none}; /* HostnameMetadataNS && HostnameMetadataXPath */ static char *hm_xpath; static char *hm_ns; /* BlockDeviceFormat */ enum bd_field { target, source }; /* InterfaceFormat. */ enum if_field { if_address, if_name, if_number }; /* ExtraStats */ #define EX_STATS_MAX_FIELDS 15 enum ex_stats { ex_stats_none = 0, ex_stats_disk = 1 << 0, ex_stats_pcpu = 1 << 1, ex_stats_cpu_util = 1 << 2, ex_stats_domain_state = 1 << 3, #ifdef HAVE_PERF_STATS ex_stats_perf = 1 << 4, #endif ex_stats_vcpupin = 1 << 5, #ifdef HAVE_DISK_ERR ex_stats_disk_err = 1 << 6, #endif #ifdef HAVE_FS_INFO ex_stats_fs_info = 1 << 7, #endif #ifdef HAVE_JOB_STATS ex_stats_job_stats_completed = 1 << 8, ex_stats_job_stats_background = 1 << 9, #endif ex_stats_disk_allocation = 1 << 10, ex_stats_disk_capacity = 1 << 11, ex_stats_disk_physical = 1 << 12, ex_stats_memory = 1 << 13, ex_stats_vcpu = 1 << 14 }; static unsigned int extra_stats = ex_stats_none; struct ex_stats_item { const char *name; enum ex_stats flag; }; static const struct ex_stats_item ex_stats_table[] = { {"disk", ex_stats_disk}, {"pcpu", ex_stats_pcpu}, {"cpu_util", ex_stats_cpu_util}, {"domain_state", ex_stats_domain_state}, #ifdef HAVE_PERF_STATS {"perf", ex_stats_perf}, #endif {"vcpupin", ex_stats_vcpupin}, #ifdef HAVE_DISK_ERR {"disk_err", ex_stats_disk_err}, #endif #ifdef HAVE_FS_INFO {"fs_info", ex_stats_fs_info}, #endif #ifdef HAVE_JOB_STATS {"job_stats_completed", ex_stats_job_stats_completed}, {"job_stats_background", ex_stats_job_stats_background}, #endif {"disk_allocation", ex_stats_disk_allocation}, {"disk_capacity", ex_stats_disk_capacity}, {"disk_physical", ex_stats_disk_physical}, {"memory", ex_stats_memory}, {"vcpu", ex_stats_vcpu}, {NULL, ex_stats_none}, }; /* BlockDeviceFormatBasename */ static bool blockdevice_format_basename; static enum bd_field blockdevice_format = target; static enum if_field interface_format = if_name; /* Time that we last refreshed. */ static time_t last_refresh = (time_t)0; static int refresh_lists(struct lv_read_instance *inst); static int register_event_impl(void); static int start_event_loop(virt_notif_thread_t *thread_data); struct lv_block_stats { virDomainBlockStatsStruct bi; long long rd_total_times; long long wr_total_times; long long fl_req; long long fl_total_times; }; static void init_block_stats(struct lv_block_stats *bstats) { if (bstats == NULL) return; bstats->bi.rd_req = -1; bstats->bi.wr_req = -1; bstats->bi.rd_bytes = -1; bstats->bi.wr_bytes = -1; bstats->rd_total_times = -1; bstats->wr_total_times = -1; bstats->fl_req = -1; bstats->fl_total_times = -1; } static void init_block_info(virDomainBlockInfoPtr binfo) { binfo->allocation = -1; binfo->capacity = -1; binfo->physical = -1; } #ifdef HAVE_BLOCK_STATS_FLAGS #define GET_BLOCK_STATS_VALUE(NAME, FIELD) \ if (!strcmp(param[i].field, NAME)) { \ bstats->FIELD = param[i].value.l; \ continue; \ } static int get_block_stats(struct lv_block_stats *bstats, virTypedParameterPtr param, int nparams) { if (bstats == NULL || param == NULL) return -1; for (int i = 0; i < nparams; ++i) { /* ignore type. Everything must be LLONG anyway. */ GET_BLOCK_STATS_VALUE("rd_operations", bi.rd_req); GET_BLOCK_STATS_VALUE("wr_operations", bi.wr_req); GET_BLOCK_STATS_VALUE("rd_bytes", bi.rd_bytes); GET_BLOCK_STATS_VALUE("wr_bytes", bi.wr_bytes); GET_BLOCK_STATS_VALUE("rd_total_times", rd_total_times); GET_BLOCK_STATS_VALUE("wr_total_times", wr_total_times); GET_BLOCK_STATS_VALUE("flush_operations", fl_req); GET_BLOCK_STATS_VALUE("flush_total_times", fl_total_times); } return 0; } #undef GET_BLOCK_STATS_VALUE #endif /* HAVE_BLOCK_STATS_FLAGS */ /* ERROR(...) macro for virterrors. */ #define VIRT_ERROR(conn, s) \ do { \ virErrorPtr err; \ err = (conn) ? virConnGetLastError((conn)) : virGetLastError(); \ if (err) \ ERROR(PLUGIN_NAME " plugin: %s failed: %s", (s), err->message); \ } while (0) enum metadata_set_type_e { META_APPEND_HOST, META_APPEND_PLUGIN_INSTANCE }; static void set_field_from_metadata(value_list_t *vl, virDomainPtr dom, enum metadata_set_type_e field) { const char *xpath_str = NULL; if (hm_xpath == NULL) xpath_str = "/instance/name/text()"; else xpath_str = hm_xpath; const char *namespace = NULL; if (hm_ns == NULL) { namespace = "http://openstack.org/xmlns/libvirt/nova/1.0"; } // namespace =hm_ns; else { namespace = hm_ns; } char *metadata_str = virDomainGetMetadata( dom, VIR_DOMAIN_METADATA_ELEMENT, namespace, VIR_DOMAIN_AFFECT_CURRENT); if (metadata_str == NULL) { return; } const char *value = NULL; xmlXPathContextPtr xpath_ctx = NULL; xmlXPathObjectPtr xpath_obj = NULL; xmlNodePtr xml_node = NULL; xmlDocPtr xml_doc = xmlReadDoc((xmlChar *)metadata_str, NULL, NULL, XML_PARSE_NONET); if (xml_doc == NULL) { ERROR(PLUGIN_NAME " plugin: xmlReadDoc failed to read metadata"); goto metadata_end; } xpath_ctx = xmlXPathNewContext(xml_doc); if (xpath_ctx == NULL) { ERROR(PLUGIN_NAME " plugin: xmlXPathNewContext(%s) failed for metadata", metadata_str); goto metadata_end; } xpath_obj = xmlXPathEval((xmlChar *)xpath_str, xpath_ctx); if (xpath_obj == NULL) { ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed for metadata", xpath_str); goto metadata_end; } if (xpath_obj->type != XPATH_NODESET) { ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d " "(wanted %d) for metadata", xpath_str, xpath_obj->type, XPATH_NODESET); goto metadata_end; } // TODO(sileht): We can support || operator by looping on nodes here if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) { WARNING(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i " "expected=1 for metadata", xpath_str, (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr); goto metadata_end; } xml_node = xpath_obj->nodesetval->nodeTab[0]; if (xml_node->type == XML_TEXT_NODE) { value = (const char *)xml_node->content; } else if (xml_node->type == XML_ATTRIBUTE_NODE) { value = (const char *)xml_node->children->content; } else { ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unsupported node type %d", xpath_str, xml_node->type); goto metadata_end; } if (value == NULL) goto metadata_end; switch (field) { case META_APPEND_HOST: SSTRNCAT(vl->host, value, sizeof(vl->host)); break; case META_APPEND_PLUGIN_INSTANCE: SSTRNCAT(vl->plugin_instance, value, sizeof(vl->plugin_instance)); break; } metadata_end: if (xpath_obj) xmlXPathFreeObject(xpath_obj); if (xpath_ctx) xmlXPathFreeContext(xpath_ctx); if (xml_doc) xmlFreeDoc(xml_doc); sfree(metadata_str); } static void init_value_list(value_list_t *vl, virDomainPtr dom) { const char *name; char uuid[VIR_UUID_STRING_BUFLEN]; sstrncpy(vl->plugin, PLUGIN_NAME, sizeof(vl->plugin)); vl->host[0] = '\0'; /* Construct the hostname field according to HostnameFormat. */ for (int i = 0; i < HF_MAX_FIELDS; ++i) { if (hostname_format[i] == hf_none) continue; if (i > 0) SSTRNCAT(vl->host, ":", sizeof(vl->host)); switch (hostname_format[i]) { case hf_none: break; case hf_hostname: SSTRNCAT(vl->host, hostname_g, sizeof(vl->host)); break; case hf_name: name = virDomainGetName(dom); if (name) SSTRNCAT(vl->host, name, sizeof(vl->host)); break; case hf_uuid: if (virDomainGetUUIDString(dom, uuid) == 0) SSTRNCAT(vl->host, uuid, sizeof(vl->host)); break; case hf_metadata: set_field_from_metadata(vl, dom, META_APPEND_HOST); break; } } /* Construct the plugin instance field according to PluginInstanceFormat. */ for (int i = 0; i < PLGINST_MAX_FIELDS; ++i) { if (plugin_instance_format[i] == plginst_none) continue; if (i > 0) SSTRNCAT(vl->plugin_instance, ":", sizeof(vl->plugin_instance)); switch (plugin_instance_format[i]) { case plginst_none: break; case plginst_name: name = virDomainGetName(dom); if (name) SSTRNCAT(vl->plugin_instance, name, sizeof(vl->plugin_instance)); break; case plginst_uuid: if (virDomainGetUUIDString(dom, uuid) == 0) SSTRNCAT(vl->plugin_instance, uuid, sizeof(vl->plugin_instance)); break; case plginst_metadata: set_field_from_metadata(vl, dom, META_APPEND_PLUGIN_INSTANCE); break; } } } /* void init_value_list */ static int init_notif(notification_t *notif, const virDomainPtr domain, int severity, const char *msg, const char *type, const char *type_instance) { value_list_t vl = VALUE_LIST_INIT; if (!notif) { ERROR(PLUGIN_NAME " plugin: init_notif: NULL pointer"); return -1; } init_value_list(&vl, domain); notification_init(notif, severity, msg, vl.host, vl.plugin, vl.plugin_instance, type, type_instance); notif->time = cdtime(); return 0; } static void submit_notif(const virDomainPtr domain, int severity, const char *msg, const char *type, const char *type_instance) { notification_t notif; init_notif(¬if, domain, severity, msg, type, type_instance); plugin_dispatch_notification(¬if); if (notif.meta) plugin_notification_meta_free(notif.meta); } static void submit(virDomainPtr dom, char const *type, char const *type_instance, value_t *values, size_t values_len) { value_list_t vl = VALUE_LIST_INIT; init_value_list(&vl, dom); vl.values = values; vl.values_len = values_len; sstrncpy(vl.type, type, sizeof(vl.type)); if (type_instance != NULL) sstrncpy(vl.type_instance, type_instance, sizeof(vl.type_instance)); plugin_dispatch_values(&vl); } static void memory_submit(virDomainPtr dom, gauge_t value) { submit(dom, "memory", "total", &(value_t){.gauge = value}, 1); } static void memory_stats_submit(gauge_t value, virDomainPtr dom, int tag_index) { static const char *tags[] = {"swap_in", "swap_out", "major_fault", "minor_fault", "unused", "available", "actual_balloon", "rss", "usable", "last_update", "disk_caches"}; if ((tag_index < 0) || (tag_index >= (int)STATIC_ARRAY_SIZE(tags))) { ERROR(PLUGIN_NAME " plugin: Array index out of bounds: tag_index = %d", tag_index); return; } submit(dom, "memory", tags[tag_index], &(value_t){.gauge = value}, 1); } static void submit_derive2(const char *type, derive_t v0, derive_t v1, virDomainPtr dom, const char *devname) { value_t values[] = { {.derive = v0}, {.derive = v1}, }; submit(dom, type, devname, values, STATIC_ARRAY_SIZE(values)); } /* void submit_derive2 */ static double cpu_ns_to_percent(unsigned int node_cpus, unsigned long long cpu_time_old, unsigned long long cpu_time_new) { double percent = 0.0; unsigned long long cpu_time_diff = 0; double time_diff_sec = CDTIME_T_TO_DOUBLE(plugin_get_interval()); if (node_cpus != 0 && time_diff_sec != 0 && cpu_time_old != 0) { cpu_time_diff = cpu_time_new - cpu_time_old; percent = ((double)(100 * cpu_time_diff)) / (time_diff_sec * node_cpus * NANOSEC_IN_SEC); } DEBUG(PLUGIN_NAME " plugin: node_cpus=%u cpu_time_old=%" PRIu64 " cpu_time_new=%" PRIu64 " cpu_time_diff=%" PRIu64 " time_diff_sec=%f percent=%f", node_cpus, (uint64_t)cpu_time_old, (uint64_t)cpu_time_new, (uint64_t)cpu_time_diff, time_diff_sec, percent); return percent; } static void cpu_submit(const domain_t *dom, unsigned long long cpuTime_new) { if (!dom) return; if (extra_stats & ex_stats_cpu_util) { /* Computing %CPU requires 2 samples of cpuTime */ if (dom->info.cpuTime != 0 && cpuTime_new != 0) { submit(dom->ptr, "percent", "virt_cpu_total", &(value_t){.gauge = cpu_ns_to_percent( nodeinfo.cpus, dom->info.cpuTime, cpuTime_new)}, 1); } } submit(dom->ptr, "virt_cpu_total", NULL, &(value_t){.derive = cpuTime_new}, 1); } static void vcpu_submit(derive_t value, virDomainPtr dom, int vcpu_nr, const char *type) { char type_instance[DATA_MAX_NAME_LEN]; ssnprintf(type_instance, sizeof(type_instance), "%d", vcpu_nr); submit(dom, type, type_instance, &(value_t){.derive = value}, 1); } static void disk_block_stats_submit(struct lv_block_stats *bstats, virDomainPtr dom, const char *dev, virDomainBlockInfoPtr binfo) { char *dev_copy = strdup(dev); const char *type_instance = dev_copy; if (!dev_copy) return; if (blockdevice_format_basename && blockdevice_format == source) type_instance = basename(dev_copy); if (!type_instance) { sfree(dev_copy); return; } char flush_type_instance[DATA_MAX_NAME_LEN]; ssnprintf(flush_type_instance, sizeof(flush_type_instance), "flush-%s", type_instance); if ((bstats->bi.rd_req != -1) && (bstats->bi.wr_req != -1)) submit_derive2("disk_ops", (derive_t)bstats->bi.rd_req, (derive_t)bstats->bi.wr_req, dom, type_instance); if ((bstats->bi.rd_bytes != -1) && (bstats->bi.wr_bytes != -1)) submit_derive2("disk_octets", (derive_t)bstats->bi.rd_bytes, (derive_t)bstats->bi.wr_bytes, dom, type_instance); if (extra_stats & ex_stats_disk) { if ((bstats->rd_total_times != -1) && (bstats->wr_total_times != -1)) submit_derive2("disk_time", (derive_t)bstats->rd_total_times, (derive_t)bstats->wr_total_times, dom, type_instance); if (bstats->fl_req != -1) submit(dom, "total_requests", flush_type_instance, &(value_t){.derive = (derive_t)bstats->fl_req}, 1); if (bstats->fl_total_times != -1) { derive_t value = bstats->fl_total_times / 1000; // ns -> ms submit(dom, "total_time_in_ms", flush_type_instance, &(value_t){.derive = value}, 1); } } /* disk_allocation, disk_capacity and disk_physical are stored only * if corresponding extrastats are set in collectd configuration file */ if ((extra_stats & ex_stats_disk_allocation) && binfo->allocation != -1) submit(dom, "disk_allocation", type_instance, &(value_t){.gauge = (gauge_t)binfo->allocation}, 1); if ((extra_stats & ex_stats_disk_capacity) && binfo->capacity != -1) submit(dom, "disk_capacity", type_instance, &(value_t){.gauge = (gauge_t)binfo->capacity}, 1); if ((extra_stats & ex_stats_disk_physical) && binfo->physical != -1) submit(dom, "disk_physical", type_instance, &(value_t){.gauge = (gauge_t)binfo->physical}, 1); sfree(dev_copy); } /** * Function for parsing ExtraStats configuration options. * Result of parsing is stored under 'out_parsed_flags' pointer. * * Returns 0 in case of success and 1 in case of parsing error */ static int parse_ex_stats_flags(unsigned int *out_parsed_flags, char **exstats, int numexstats) { unsigned int ex_stats_flags = ex_stats_none; assert(out_parsed_flags != NULL); for (int i = 0; i < numexstats; i++) { for (int j = 0; ex_stats_table[j].name != NULL; j++) { if (strcasecmp(exstats[i], ex_stats_table[j].name) == 0) { DEBUG(PLUGIN_NAME " plugin: enabling extra stats for '%s'", ex_stats_table[j].name); ex_stats_flags |= ex_stats_table[j].flag; break; } if (ex_stats_table[j + 1].name == NULL) { ERROR(PLUGIN_NAME " plugin: Unmatched ExtraStats option: %s", exstats[i]); return 1; } } } *out_parsed_flags = ex_stats_flags; return 0; } static void domain_state_submit_notif(virDomainPtr dom, int state, int reason) { if ((state < 0) || ((size_t)state >= STATIC_ARRAY_SIZE(domain_states))) { ERROR(PLUGIN_NAME " plugin: Array index out of bounds: state=%d", state); return; } char msg[DATA_MAX_NAME_LEN]; const char *state_str = domain_states[state]; #ifdef HAVE_DOM_REASON if ((reason < 0) || ((size_t)reason >= STATIC_ARRAY_SIZE(domain_reasons[0]))) { ERROR(PLUGIN_NAME " plugin: Array index out of bounds: reason=%d", reason); return; } const char *reason_str = domain_reasons[state][reason]; /* Array size for domain reasons is fixed, but different domain states can * have different number of reasons. We need to check if reason was * successfully parsed */ if (!reason_str) { ERROR(PLUGIN_NAME " plugin: Invalid reason (%d) for domain state: %s", reason, state_str); return; } #else const char *reason_str = "N/A"; #endif ssnprintf(msg, sizeof(msg), "Domain state: %s. Reason: %s", state_str, reason_str); int severity; switch (state) { case VIR_DOMAIN_NOSTATE: case VIR_DOMAIN_RUNNING: case VIR_DOMAIN_SHUTDOWN: case VIR_DOMAIN_SHUTOFF: severity = NOTIF_OKAY; break; case VIR_DOMAIN_BLOCKED: case VIR_DOMAIN_PAUSED: #ifdef DOM_STATE_PMSUSPENDED case VIR_DOMAIN_PMSUSPENDED: #endif severity = NOTIF_WARNING; break; case VIR_DOMAIN_CRASHED: severity = NOTIF_FAILURE; break; default: ERROR(PLUGIN_NAME " plugin: Unrecognized domain state (%d)", state); return; } submit_notif(dom, severity, msg, "domain_state", NULL); } static int lv_init_ignorelists() { if (il_domains == NULL) il_domains = ignorelist_create(1); if (il_block_devices == NULL) il_block_devices = ignorelist_create(1); if (il_interface_devices == NULL) il_interface_devices = ignorelist_create(1); if (!il_domains || !il_block_devices || !il_interface_devices) return 1; return 0; } /* Validates config option that may take multiple strings arguments. * Returns 0 on success, -1 otherwise */ static int check_config_multiple_string_entry(const oconfig_item_t *ci) { if (ci == NULL) { ERROR(PLUGIN_NAME " plugin: ci oconfig_item can't be NULL"); return -1; } if (ci->values_num < 1) { ERROR(PLUGIN_NAME " plugin: the '%s' option requires at least one string argument", ci->key); return -1; } for (int i = 0; i < ci->values_num; ++i) { if (ci->values[i].type != OCONFIG_TYPE_STRING) { ERROR(PLUGIN_NAME " plugin: one of the '%s' options is not a valid string", ci->key); return -1; } } return 0; } static int lv_config(oconfig_item_t *ci) { if (lv_init_ignorelists() != 0) { ERROR(PLUGIN_NAME " plugin: lv_init_ignorelist failed."); return -1; } for (int i = 0; i < ci->children_num; ++i) { oconfig_item_t *c = ci->children + i; if (strcasecmp(c->key, "Connection") == 0) { if (cf_util_get_string(c, &conn_string) != 0 || conn_string == NULL) return -1; continue; } else if (strcasecmp(c->key, "RefreshInterval") == 0) { if (cf_util_get_int(c, &interval) != 0) return -1; continue; } else if (strcasecmp(c->key, "Domain") == 0) { char *domain_name = NULL; if (cf_util_get_string(c, &domain_name) != 0) return -1; if (ignorelist_add(il_domains, domain_name)) { ERROR(PLUGIN_NAME " plugin: Adding '%s' to domain-ignorelist failed", domain_name); sfree(domain_name); return -1; } sfree(domain_name); continue; } else if (strcasecmp(c->key, "BlockDevice") == 0) { char *device_name = NULL; if (cf_util_get_string(c, &device_name) != 0) return -1; if (ignorelist_add(il_block_devices, device_name) != 0) { ERROR(PLUGIN_NAME " plugin: Adding '%s' to block-device-ignorelist failed", device_name); sfree(device_name); return -1; } sfree(device_name); continue; } else if (strcasecmp(c->key, "BlockDeviceFormat") == 0) { char *device_format = NULL; if (cf_util_get_string(c, &device_format) != 0) return -1; if (strcasecmp(device_format, "target") == 0) blockdevice_format = target; else if (strcasecmp(device_format, "source") == 0) blockdevice_format = source; else { ERROR(PLUGIN_NAME " plugin: unknown BlockDeviceFormat: %s", device_format); sfree(device_format); return -1; } sfree(device_format); continue; } else if (strcasecmp(c->key, "BlockDeviceFormatBasename") == 0) { if (cf_util_get_boolean(c, &blockdevice_format_basename) != 0) return -1; continue; } else if (strcasecmp(c->key, "InterfaceDevice") == 0) { char *interface_name = NULL; if (cf_util_get_string(c, &interface_name) != 0) return -1; if (ignorelist_add(il_interface_devices, interface_name)) { ERROR(PLUGIN_NAME " plugin: Adding '%s' to interface-ignorelist failed", interface_name); sfree(interface_name); return -1; } sfree(interface_name); continue; } else if (strcasecmp(c->key, "IgnoreSelected") == 0) { bool ignore_selected = false; if (cf_util_get_boolean(c, &ignore_selected) != 0) return -1; if (ignore_selected) { ignorelist_set_invert(il_domains, 0); ignorelist_set_invert(il_block_devices, 0); ignorelist_set_invert(il_interface_devices, 0); } else { ignorelist_set_invert(il_domains, 1); ignorelist_set_invert(il_block_devices, 1); ignorelist_set_invert(il_interface_devices, 1); } continue; } else if (strcasecmp(c->key, "HostnameMetadataNS") == 0) { if (cf_util_get_string(c, &hm_ns) != 0) return -1; continue; } else if (strcasecmp(c->key, "HostnameMetadataXPath") == 0) { if (cf_util_get_string(c, &hm_xpath) != 0) return -1; continue; } else if (strcasecmp(c->key, "HostnameFormat") == 0) { /* this option can take multiple strings arguments in one config line*/ if (check_config_multiple_string_entry(c) != 0) { ERROR(PLUGIN_NAME " plugin: Could not get 'HostnameFormat' parameter"); return -1; } const int params_num = c->values_num; for (int i = 0; i < params_num; ++i) { const char *param_name = c->values[i].value.string; if (strcasecmp(param_name, "hostname") == 0) hostname_format[i] = hf_hostname; else if (strcasecmp(param_name, "name") == 0) hostname_format[i] = hf_name; else if (strcasecmp(param_name, "uuid") == 0) hostname_format[i] = hf_uuid; else if (strcasecmp(param_name, "metadata") == 0) hostname_format[i] = hf_metadata; else { ERROR(PLUGIN_NAME " plugin: unknown HostnameFormat field: %s", param_name); return -1; } } for (int i = params_num; i < HF_MAX_FIELDS; ++i) hostname_format[i] = hf_none; continue; } else if (strcasecmp(c->key, "PluginInstanceFormat") == 0) { /* this option can handle list of string parameters in one line*/ if (check_config_multiple_string_entry(c) != 0) { ERROR(PLUGIN_NAME " plugin: Could not get 'PluginInstanceFormat' parameter"); return -1; } const int params_num = c->values_num; for (int i = 0; i < params_num; ++i) { const char *param_name = c->values[i].value.string; if (strcasecmp(param_name, "none") == 0) { plugin_instance_format[i] = plginst_none; break; } else if (strcasecmp(param_name, "name") == 0) plugin_instance_format[i] = plginst_name; else if (strcasecmp(param_name, "uuid") == 0) plugin_instance_format[i] = plginst_uuid; else if (strcasecmp(param_name, "metadata") == 0) plugin_instance_format[i] = plginst_metadata; else { ERROR(PLUGIN_NAME " plugin: unknown PluginInstanceFormat field: %s", param_name); return -1; } } for (int i = params_num; i < PLGINST_MAX_FIELDS; ++i) plugin_instance_format[i] = plginst_none; continue; } else if (strcasecmp(c->key, "InterfaceFormat") == 0) { char *format = NULL; if (cf_util_get_string(c, &format) != 0) return -1; if (strcasecmp(format, "name") == 0) interface_format = if_name; else if (strcasecmp(format, "address") == 0) interface_format = if_address; else if (strcasecmp(format, "number") == 0) interface_format = if_number; else { ERROR(PLUGIN_NAME " plugin: unknown InterfaceFormat: %s", format); sfree(format); return -1; } sfree(format); continue; } else if (strcasecmp(c->key, "Instances") == 0) { if (cf_util_get_int(c, &nr_instances) != 0) return -1; if (nr_instances <= 0) { ERROR(PLUGIN_NAME " plugin: Instances <= 0 makes no sense."); return -1; } if (nr_instances > NR_INSTANCES_MAX) { ERROR(PLUGIN_NAME " plugin: Instances=%i > NR_INSTANCES_MAX=%i" " use a lower setting or recompile the plugin.", nr_instances, NR_INSTANCES_MAX); return -1; } DEBUG(PLUGIN_NAME " plugin: configured %i instances", nr_instances); continue; } else if (strcasecmp(c->key, "ExtraStats") == 0) { char *ex_str = NULL; if (cf_util_get_string(c, &ex_str) != 0) return -1; char *exstats[EX_STATS_MAX_FIELDS]; int numexstats = strsplit(ex_str, exstats, STATIC_ARRAY_SIZE(exstats)); int status = parse_ex_stats_flags(&extra_stats, exstats, numexstats); sfree(ex_str); if (status != 0) { ERROR(PLUGIN_NAME " plugin: parsing 'ExtraStats' option failed"); return status; } #ifdef HAVE_JOB_STATS if ((extra_stats & ex_stats_job_stats_completed) && (extra_stats & ex_stats_job_stats_background)) { ERROR(PLUGIN_NAME " plugin: Invalid job stats configuration. Only one " "type of job statistics can be collected at the same " "time"); return -1; } #endif /* ExtraStats parsed successfully */ continue; } else if (strcasecmp(c->key, "PersistentNotification") == 0) { if (cf_util_get_boolean(c, &persistent_notification) != 0) return -1; continue; } else if (strcasecmp(c->key, "ReportBlockDevices") == 0) { if (cf_util_get_boolean(c, &report_block_devices) != 0) return -1; continue; } else if (strcasecmp(c->key, "ReportNetworkInterfaces") == 0) { if (cf_util_get_boolean(c, &report_network_interfaces) != 0) return -1; continue; } else { /* Unrecognised option. */ ERROR(PLUGIN_NAME " plugin: Unrecognized option: '%s'", c->key); return -1; } } return 0; } static int lv_connect(void) { if (conn == NULL) { /* event implementation must be registered before connection is opened */ if (!persistent_notification) if (register_event_impl() != 0) return -1; /* `conn_string == NULL' is acceptable */ #ifdef HAVE_FS_INFO /* virDomainGetFSInfo requires full read-write access connection */ if (extra_stats & ex_stats_fs_info) conn = virConnectOpen(conn_string); else #endif conn = virConnectOpenReadOnly(conn_string); if (conn == NULL) { c_complain(LOG_ERR, &conn_complain, PLUGIN_NAME " plugin: Unable to connect: " "virConnectOpen failed."); return -1; } int status = virNodeGetInfo(conn, &nodeinfo); if (status != 0) { ERROR(PLUGIN_NAME " plugin: virNodeGetInfo failed"); virConnectClose(conn); conn = NULL; return -1; } if (!persistent_notification) if (start_event_loop(¬if_thread) != 0) { virConnectClose(conn); conn = NULL; return -1; } } c_release(LOG_NOTICE, &conn_complain, PLUGIN_NAME " plugin: Connection established."); return 0; } static void lv_disconnect(void) { if (conn != NULL) virConnectClose(conn); conn = NULL; WARNING(PLUGIN_NAME " plugin: closed connection to libvirt"); } static int lv_domain_block_stats(virDomainPtr dom, const char *path, struct lv_block_stats *bstats) { #ifdef HAVE_BLOCK_STATS_FLAGS int nparams = 0; if (virDomainBlockStatsFlags(dom, path, NULL, &nparams, 0) < 0 || nparams <= 0) { VIRT_ERROR(conn, "getting the disk params count"); return -1; } virTypedParameterPtr params = calloc(nparams, sizeof(*params)); if (params == NULL) { ERROR(PLUGIN_NAME " plugin: alloc(%i) for block=%s parameters failed.", nparams, path); return -1; } int rc = -1; if (virDomainBlockStatsFlags(dom, path, params, &nparams, 0) < 0) { VIRT_ERROR(conn, "getting the disk params values"); } else { rc = get_block_stats(bstats, params, nparams); } virTypedParamsClear(params, nparams); sfree(params); return rc; #else return virDomainBlockStats(dom, path, &(bstats->bi), sizeof(bstats->bi)); #endif /* HAVE_BLOCK_STATS_FLAGS */ } #ifdef HAVE_PERF_STATS static void perf_submit(virDomainStatsRecordPtr stats) { for (int i = 0; i < stats->nparams; ++i) { /* Replace '.' with '_' in event field to match other metrics' naming * convention */ char *c = strchr(stats->params[i].field, '.'); if (c) *c = '_'; submit(stats->dom, "perf", stats->params[i].field, &(value_t){.derive = stats->params[i].value.ul}, 1); } } static int get_perf_events(virDomainPtr domain) { virDomainStatsRecordPtr *stats = NULL; /* virDomainListGetStats requires a NULL terminated list of domains */ virDomainPtr domain_array[] = {domain, NULL}; int status = virDomainListGetStats(domain_array, VIR_DOMAIN_STATS_PERF, &stats, 0); if (status == -1) { ERROR(PLUGIN_NAME " plugin: virDomainListGetStats failed with status %i.", status); virErrorPtr err = virGetLastError(); if (err->code == VIR_ERR_NO_SUPPORT) { ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: perf"); extra_stats &= ~(ex_stats_perf); } return -1; } for (int i = 0; i < status; ++i) perf_submit(stats[i]); virDomainStatsRecordListFree(stats); return 0; } #endif /* HAVE_PERF_STATS */ static void vcpu_pin_submit(virDomainPtr dom, int max_cpus, int vcpu, unsigned char *cpu_maps, int cpu_map_len) { for (int cpu = 0; cpu < max_cpus; ++cpu) { char type_instance[DATA_MAX_NAME_LEN]; bool is_set = VIR_CPU_USABLE(cpu_maps, cpu_map_len, vcpu, cpu); ssnprintf(type_instance, sizeof(type_instance), "vcpu_%d-cpu_%d", vcpu, cpu); submit(dom, "cpu_affinity", type_instance, &(value_t){.gauge = is_set}, 1); } } static int get_vcpu_stats(virDomainPtr domain, unsigned short nr_virt_cpu) { int max_cpus = VIR_NODEINFO_MAXCPUS(nodeinfo); virVcpuInfoPtr vinfo = calloc(nr_virt_cpu, sizeof(*vinfo)); if (vinfo == NULL) { ERROR(PLUGIN_NAME " plugin: calloc failed."); return -1; } int cpu_map_len = 0; unsigned char *cpumaps = NULL; if (extra_stats & ex_stats_vcpupin) { cpu_map_len = VIR_CPU_MAPLEN(max_cpus); cpumaps = calloc(nr_virt_cpu, cpu_map_len); if (cpumaps == NULL) { ERROR(PLUGIN_NAME " plugin: calloc failed."); sfree(vinfo); return -1; } } int status = virDomainGetVcpus(domain, vinfo, nr_virt_cpu, cpumaps, cpu_map_len); if (status < 0) { ERROR(PLUGIN_NAME " plugin: virDomainGetVcpus failed with status %i.", status); virErrorPtr err = virGetLastError(); if (err->code == VIR_ERR_NO_SUPPORT) { if (extra_stats & ex_stats_vcpu) ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: vcpu"); if (extra_stats & ex_stats_vcpupin) ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: vcpupin"); extra_stats &= ~(ex_stats_vcpu | ex_stats_vcpupin); } sfree(cpumaps); sfree(vinfo); return -1; } for (int i = 0; i < nr_virt_cpu; ++i) { if (extra_stats & ex_stats_vcpu) vcpu_submit(vinfo[i].cpuTime, domain, vinfo[i].number, "virt_vcpu"); if (extra_stats & ex_stats_vcpupin) vcpu_pin_submit(domain, max_cpus, i, cpumaps, cpu_map_len); } sfree(cpumaps); sfree(vinfo); return 0; } #ifdef HAVE_CPU_STATS static int get_pcpu_stats(virDomainPtr dom) { int nparams = virDomainGetCPUStats(dom, NULL, 0, -1, 1, 0); if (nparams < 0) { VIRT_ERROR(conn, "getting the CPU params count"); virErrorPtr err = virGetLastError(); if (err->code == VIR_ERR_NO_SUPPORT) { ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: pcpu"); extra_stats &= ~(ex_stats_pcpu); } return -1; } virTypedParameterPtr param = calloc(nparams, sizeof(*param)); if (param == NULL) { ERROR(PLUGIN_NAME " plugin: alloc(%i) for cpu parameters failed.", nparams); return -1; } int ret = virDomainGetCPUStats(dom, param, nparams, -1, 1, 0); // total stats. if (ret < 0) { virTypedParamsClear(param, nparams); sfree(param); VIRT_ERROR(conn, "getting the CPU params values"); return -1; } unsigned long long total_user_cpu_time = 0; unsigned long long total_syst_cpu_time = 0; for (int i = 0; i < nparams; ++i) { if (!strcmp(param[i].field, "user_time")) total_user_cpu_time = param[i].value.ul; else if (!strcmp(param[i].field, "system_time")) total_syst_cpu_time = param[i].value.ul; } if (total_user_cpu_time > 0 || total_syst_cpu_time > 0) submit_derive2("ps_cputime", total_user_cpu_time, total_syst_cpu_time, dom, NULL); virTypedParamsClear(param, nparams); sfree(param); return 0; } #endif /* HAVE_CPU_STATS */ #ifdef HAVE_DOM_REASON static int submit_domain_state(virDomainPtr domain) { int domain_state = 0; int domain_reason = 0; int status = virDomainGetState(domain, &domain_state, &domain_reason, 0); if (status != 0) { ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.", status); return status; } value_t values[] = { {.gauge = (gauge_t)domain_state}, {.gauge = (gauge_t)domain_reason}, }; submit(domain, "domain_state", NULL, values, STATIC_ARRAY_SIZE(values)); return 0; } #ifdef HAVE_LIST_ALL_DOMAINS static int get_domain_state_notify(virDomainPtr domain) { int domain_state = 0; int domain_reason = 0; int status = virDomainGetState(domain, &domain_state, &domain_reason, 0); if (status != 0) { ERROR(PLUGIN_NAME " plugin: virDomainGetState failed with status %i.", status); return status; } domain_state_submit_notif(domain, domain_state, domain_reason); return status; } #endif /* HAVE_LIST_ALL_DOMAINS */ #endif /* HAVE_DOM_REASON */ static int get_memory_stats(virDomainPtr domain) { virDomainMemoryStatPtr minfo = calloc(VIR_DOMAIN_MEMORY_STAT_NR, sizeof(*minfo)); if (minfo == NULL) { ERROR(PLUGIN_NAME " plugin: calloc failed."); return -1; } int mem_stats = virDomainMemoryStats(domain, minfo, VIR_DOMAIN_MEMORY_STAT_NR, 0); if (mem_stats < 0) { ERROR(PLUGIN_NAME " plugin: virDomainMemoryStats failed with mem_stats %i.", mem_stats); sfree(minfo); virErrorPtr err = virGetLastError(); if (err->code == VIR_ERR_NO_SUPPORT) { ERROR(PLUGIN_NAME " plugin: Disabled unsupported ExtraStats selector: memory"); extra_stats &= ~(ex_stats_memory); } return -1; } derive_t swap_in = -1; derive_t swap_out = -1; derive_t min_flt = -1; derive_t maj_flt = -1; for (int i = 0; i < mem_stats; i++) { if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_IN) swap_in = minfo[i].val; else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_SWAP_OUT) swap_out = minfo[i].val; else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MINOR_FAULT) min_flt = minfo[i].val; else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_MAJOR_FAULT) maj_flt = minfo[i].val; #ifdef LIBVIR_CHECK_VERSION #if LIBVIR_CHECK_VERSION(2, 1, 0) else if (minfo[i].tag == VIR_DOMAIN_MEMORY_STAT_LAST_UPDATE) /* Skip 'last_update' reporting as that is not memory but timestamp */ continue; #endif #endif else memory_stats_submit((gauge_t)minfo[i].val * 1024, domain, minfo[i].tag); } 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 = virGetLastError(); 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 = virGetLastError(); 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 = virGetLastError(); 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 = virGetLastError(); // 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 return status; } static int lv_read(user_data_t *ud) { if (ud->data == NULL) { ERROR(PLUGIN_NAME " plugin: NULL userdata"); return -1; } struct lv_read_instance *inst = ud->data; struct lv_read_state *state = &inst->read_state; if (inst->id == 0) if (lv_connect() < 0) return -1; /* Wait until inst#0 establish connection */ if (conn == NULL) { DEBUG(PLUGIN_NAME " plugin#%s: Wait until inst#0 establish connection", inst->tag); return 0; } int ret = virConnectIsAlive(conn); if (ret == 0) { /* Connection lost */ if (inst->id == 0) { c_complain(LOG_ERR, &conn_complain, PLUGIN_NAME " plugin: Lost connection."); if (!persistent_notification) stop_event_loop(¬if_thread); lv_disconnect(); last_refresh = 0; } return -1; } time_t t; time(&t); /* Need to refresh domain or device lists? */ if ((last_refresh == (time_t)0) || ((interval > 0) && ((last_refresh + interval) <= t))) { if (refresh_lists(inst) != 0) { if (inst->id == 0) { if (!persistent_notification) stop_event_loop(¬if_thread); lv_disconnect(); } return -1; } last_refresh = t; } /* persistent domains state notifications are handled by instance 0 */ if (inst->id == 0 && persistent_notification) { int status = persistent_domains_state_notification(); if (status != 0) DEBUG(PLUGIN_NAME " plugin: persistent_domains_state_notifications " "returned with status %i", status); } #if COLLECT_DEBUG for (int i = 0; i < state->nr_domains; ++i) DEBUG(PLUGIN_NAME " plugin: domain %s", virDomainGetName(state->domains[i].ptr)); for (int i = 0; i < state->nr_block_devices; ++i) DEBUG(PLUGIN_NAME " plugin: block device %d %s:%s", i, virDomainGetName(state->block_devices[i].dom), state->block_devices[i].path); for (int i = 0; i < state->nr_interface_devices; ++i) DEBUG(PLUGIN_NAME " plugin: interface device %d %s:%s", i, virDomainGetName(state->interface_devices[i].dom), state->interface_devices[i].path); #endif /* Get domains' metrics */ for (int i = 0; i < state->nr_domains; ++i) { domain_t *dom = &state->domains[i]; int status = 0; if (dom->active) status = get_domain_metrics(dom); #ifdef HAVE_DOM_REASON else if (extra_stats & ex_stats_domain_state) status = submit_domain_state(dom->ptr); #endif if (status != 0) ERROR(PLUGIN_NAME " plugin: failed to get metrics for domain=%s", virDomainGetName(dom->ptr)); } /* Get block device stats for each domain. */ for (int i = 0; i < state->nr_block_devices; ++i) { int status = get_block_device_stats(&state->block_devices[i]); if (status != 0) ERROR(PLUGIN_NAME " plugin: failed to get stats for block device (%s) in domain %s", state->block_devices[i].path, virDomainGetName(state->block_devices[i].dom)); } /* Get interface stats for each domain. */ for (int i = 0; i < state->nr_interface_devices; ++i) { int status = get_if_dev_stats(&state->interface_devices[i]); if (status != 0) ERROR( PLUGIN_NAME " plugin: failed to get interface stats for device (%s) in domain %s", state->interface_devices[i].path, virDomainGetName(state->interface_devices[i].dom)); } return 0; } static int lv_init_instance(size_t i, plugin_read_cb callback) { struct lv_user_data *lv_ud = &(lv_read_user_data[i]); struct lv_read_instance *inst = &(lv_ud->inst); memset(lv_ud, 0, sizeof(*lv_ud)); ssnprintf(inst->tag, sizeof(inst->tag), "%s-%" PRIsz, PLUGIN_NAME, i); inst->id = i; user_data_t *ud = &(lv_ud->ud); ud->data = inst; ud->free_func = NULL; INFO(PLUGIN_NAME " plugin: reader %s initialized", inst->tag); return plugin_register_complex_read(NULL, inst->tag, callback, 0, ud); } static void lv_clean_read_state(struct lv_read_state *state) { free_block_devices(state); free_interface_devices(state); free_domains(state); } static void lv_fini_instance(size_t i) { struct lv_read_instance *inst = &(lv_read_user_data[i].inst); struct lv_read_state *state = &(inst->read_state); lv_clean_read_state(state); INFO(PLUGIN_NAME " plugin: reader %s finalized", inst->tag); } static int lv_init(void) { if (virInitialize() != 0) return -1; /* Init ignorelists if there was no explicit configuration */ if (lv_init_ignorelists() != 0) return -1; if (!persistent_notification) if (virt_notif_thread_init(¬if_thread) != 0) return -1; lv_connect(); DEBUG(PLUGIN_NAME " plugin: starting %i instances", nr_instances); for (int i = 0; i < nr_instances; ++i) if (lv_init_instance(i, lv_read) != 0) return -1; return 0; } /* * returns 0 on success and <0 on error */ static int lv_domain_get_tag(xmlXPathContextPtr xpath_ctx, const char *dom_name, char *dom_tag) { char xpath_str[BUFFER_MAX_LEN] = {'\0'}; xmlXPathObjectPtr xpath_obj = NULL; xmlNodePtr xml_node = NULL; int ret = -1; int err; err = xmlXPathRegisterNs(xpath_ctx, (const xmlChar *)METADATA_VM_PARTITION_PREFIX, (const xmlChar *)METADATA_VM_PARTITION_URI); if (err) { ERROR(PLUGIN_NAME " plugin: xmlXpathRegisterNs(%s, %s) failed on domain %s", METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_URI, dom_name); goto done; } ssnprintf(xpath_str, sizeof(xpath_str), "/domain/metadata/%s:%s/text()", METADATA_VM_PARTITION_PREFIX, METADATA_VM_PARTITION_ELEMENT); xpath_obj = xmlXPathEvalExpression((xmlChar *)xpath_str, xpath_ctx); if (xpath_obj == NULL) { ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) failed on domain %s", xpath_str, dom_name); goto done; } if (xpath_obj->type != XPATH_NODESET) { ERROR(PLUGIN_NAME " plugin: xmlXPathEval(%s) unexpected return type %d " "(wanted %d) on domain %s", xpath_str, xpath_obj->type, XPATH_NODESET, dom_name); goto done; } /* * from now on there is no real error, it's ok if a domain * doesn't have the metadata partition tag. */ ret = 0; if (xpath_obj->nodesetval == NULL || xpath_obj->nodesetval->nodeNr != 1) { DEBUG(PLUGIN_NAME " plugin: xmlXPathEval(%s) return nodeset size=%i " "expected=1 on domain %s", xpath_str, (xpath_obj->nodesetval == NULL) ? 0 : xpath_obj->nodesetval->nodeNr, dom_name); } else { xml_node = xpath_obj->nodesetval->nodeTab[0]; sstrncpy(dom_tag, (const char *)xml_node->content, PARTITION_TAG_MAX_LEN); } done: /* deregister to clean up */ err = xmlXPathRegisterNs(xpath_ctx, (const xmlChar *)METADATA_VM_PARTITION_PREFIX, NULL); if (err) { /* we can't really recover here */ ERROR(PLUGIN_NAME " plugin: deregistration of namespace %s failed for domain %s", METADATA_VM_PARTITION_PREFIX, dom_name); } if (xpath_obj) xmlXPathFreeObject(xpath_obj); return ret; } static int is_known_tag(const char *dom_tag) { for (int i = 0; i < nr_instances; ++i) if (!strcmp(dom_tag, lv_read_user_data[i].inst.tag)) return 1; return 0; } static int lv_instance_include_domain(struct lv_read_instance *inst, const char *dom_name, const char *dom_tag) { if ((dom_tag[0] != '\0') && (strcmp(dom_tag, inst->tag) == 0)) return 1; /* instance#0 will always be there, so it is in charge of extra duties */ if (inst->id == 0) { if (dom_tag[0] == '\0' || !is_known_tag(dom_tag)) { DEBUG(PLUGIN_NAME " plugin#%s: refreshing domain %s " "with unknown tag '%s'", inst->tag, dom_name, dom_tag); return 1; } } return 0; } static void lv_add_block_devices(struct lv_read_state *state, virDomainPtr dom, const char *domname, xmlXPathContextPtr xpath_ctx) { xmlXPathObjectPtr xpath_obj = xmlXPathEval((const xmlChar *)"/domain/devices/disk", xpath_ctx); if (xpath_obj == NULL) { DEBUG(PLUGIN_NAME " plugin: no disk xpath-object found for domain %s", domname); return; } if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) { DEBUG(PLUGIN_NAME " plugin: no disk node found for domain %s", domname); goto cleanup; } xmlNodeSetPtr xml_block_devices = xpath_obj->nodesetval; for (int i = 0; i < xml_block_devices->nodeNr; ++i) { xmlNodePtr xml_device = xpath_obj->nodesetval->nodeTab[i]; char *path_str = NULL; char *source_str = NULL; if (!xml_device) continue; /* Fetching path and source for block device */ for (xmlNodePtr child = xml_device->children; child; child = child->next) { if (child->type != XML_ELEMENT_NODE) continue; /* we are interested only in either "target" or "source" elements */ if (xmlStrEqual(child->name, (const xmlChar *)"target")) path_str = (char *)xmlGetProp(child, (const xmlChar *)"dev"); else if (xmlStrEqual(child->name, (const xmlChar *)"source")) { /* name of the source is located in "dev" or "file" element (it depends * on type of source). Trying "dev" at first*/ source_str = (char *)xmlGetProp(child, (const xmlChar *)"dev"); if (!source_str) source_str = (char *)xmlGetProp(child, (const xmlChar *)"file"); } /* ignoring any other element*/ } /* source_str will be interpreted as a device path if blockdevice_format * param is set to 'source'. */ const char *device_path = (blockdevice_format == source) ? source_str : path_str; if (!device_path) { /* no path found and we can't add block_device without it */ WARNING(PLUGIN_NAME " plugin: could not generate device path for disk in " "domain %s - disk device will be ignored in reports", domname); goto cont; } if (ignore_device_match(il_block_devices, domname, device_path) == 0) { /* we only have to store information whether 'source' exists or not */ bool has_source = (source_str != NULL) ? true : false; add_block_device(state, dom, device_path, has_source); } cont: if (path_str) xmlFree(path_str); if (source_str) xmlFree(source_str); } cleanup: xmlXPathFreeObject(xpath_obj); } static void lv_add_network_interfaces(struct lv_read_state *state, virDomainPtr dom, const char *domname, xmlXPathContextPtr xpath_ctx) { xmlXPathObjectPtr xpath_obj = xmlXPathEval( (xmlChar *)"/domain/devices/interface[target[@dev]]", xpath_ctx); if (xpath_obj == NULL) return; if (xpath_obj->type != XPATH_NODESET || xpath_obj->nodesetval == NULL) { xmlXPathFreeObject(xpath_obj); return; } xmlNodeSetPtr xml_interfaces = xpath_obj->nodesetval; for (int j = 0; j < xml_interfaces->nodeNr; ++j) { char *path = NULL; char *address = NULL; const int itf_number = j + 1; xmlNodePtr xml_interface = xml_interfaces->nodeTab[j]; if (!xml_interface) continue; for (xmlNodePtr child = xml_interface->children; child; child = child->next) { if (child->type != XML_ELEMENT_NODE) continue; if (xmlStrEqual(child->name, (const xmlChar *)"target")) { path = (char *)xmlGetProp(child, (const xmlChar *)"dev"); if (!path) continue; } else if (xmlStrEqual(child->name, (const xmlChar *)"mac")) { address = (char *)xmlGetProp(child, (const xmlChar *)"address"); if (!address) continue; } } bool device_ignored = false; switch (interface_format) { case if_name: if (ignore_device_match(il_interface_devices, domname, path) != 0) device_ignored = true; break; case if_address: if (ignore_device_match(il_interface_devices, domname, address) != 0) device_ignored = true; break; case if_number: { char number_string[4]; ssnprintf(number_string, sizeof(number_string), "%d", itf_number); if (ignore_device_match(il_interface_devices, domname, number_string) != 0) device_ignored = true; } break; default: ERROR(PLUGIN_NAME " plugin: Unknown interface_format option: %d", interface_format); } if (!device_ignored) add_interface_device(state, dom, path, address, itf_number); if (path) xmlFree(path); if (address) xmlFree(address); } xmlXPathFreeObject(xpath_obj); } static bool is_domain_ignored(virDomainPtr dom) { const char *domname = virDomainGetName(dom); if (domname == NULL) { VIRT_ERROR(conn, "virDomainGetName failed, ignoring domain"); return true; } if (ignorelist_match(il_domains, domname) != 0) { DEBUG(PLUGIN_NAME " plugin: ignoring domain '%s' because of ignorelist option", domname); return true; } return false; } static int refresh_lists(struct lv_read_instance *inst) { struct lv_read_state *state = &inst->read_state; int n; #ifndef HAVE_LIST_ALL_DOMAINS n = virConnectNumOfDomains(conn); if (n < 0) { VIRT_ERROR(conn, "reading number of domains"); return -1; } #endif lv_clean_read_state(state); #ifndef HAVE_LIST_ALL_DOMAINS if (n == 0) goto end; #endif #ifdef HAVE_LIST_ALL_DOMAINS virDomainPtr *domains, *domains_inactive; int m = virConnectListAllDomains(conn, &domains_inactive, VIR_CONNECT_LIST_DOMAINS_INACTIVE); n = virConnectListAllDomains(conn, &domains, VIR_CONNECT_LIST_DOMAINS_ACTIVE); #else /* Get list of domains. */ int *domids = calloc(n, sizeof(*domids)); if (domids == NULL) { ERROR(PLUGIN_NAME " plugin: calloc failed."); return -1; } n = virConnectListDomains(conn, domids, n); #endif if (n < 0) { VIRT_ERROR(conn, "reading list of domains"); #ifndef HAVE_LIST_ALL_DOMAINS sfree(domids); #else for (int i = 0; i < m; ++i) virDomainFree(domains_inactive[i]); sfree(domains_inactive); #endif return -1; } #ifdef HAVE_LIST_ALL_DOMAINS for (int i = 0; i < m; ++i) if (is_domain_ignored(domains_inactive[i]) || add_domain(state, domains_inactive[i], 0) < 0) { /* domain ignored or failed during adding to domains list*/ virDomainFree(domains_inactive[i]); domains_inactive[i] = NULL; continue; } #endif /* Fetch each domain and add it to the list, unless ignore. */ for (int i = 0; i < n; ++i) { #ifdef HAVE_LIST_ALL_DOMAINS virDomainPtr dom = domains[i]; #else virDomainPtr dom = virDomainLookupByID(conn, domids[i]); if (dom == NULL) { VIRT_ERROR(conn, "virDomainLookupByID"); /* Could be that the domain went away -- ignore it anyway. */ continue; } #endif if (is_domain_ignored(dom) || add_domain(state, dom, 1) < 0) { /* * domain ignored or failed during adding to domains list * * When domain is already tracked, then there is * no problem with memory handling (will be freed * with the rest of domains cached data) * But in case of error like this (error occurred * before adding domain to track) we have to take * care it ourselves and call virDomainFree */ virDomainFree(dom); continue; } const char *domname = virDomainGetName(dom); if (domname == NULL) { VIRT_ERROR(conn, "virDomainGetName"); continue; } virDomainInfo info; int status = virDomainGetInfo(dom, &info); if (status != 0) { ERROR(PLUGIN_NAME " plugin: virDomainGetInfo failed with status %i.", status); continue; } if (info.state != VIR_DOMAIN_RUNNING) { DEBUG(PLUGIN_NAME " plugin: skipping inactive domain %s", domname); continue; } /* Get a list of devices for this domain. */ xmlDocPtr xml_doc = NULL; xmlXPathContextPtr xpath_ctx = NULL; char *xml = virDomainGetXMLDesc(dom, 0); if (!xml) { VIRT_ERROR(conn, "virDomainGetXMLDesc"); goto cont; } /* Yuck, XML. Parse out the devices. */ xml_doc = xmlReadDoc((xmlChar *)xml, NULL, NULL, XML_PARSE_NONET); if (xml_doc == NULL) { VIRT_ERROR(conn, "xmlReadDoc"); goto cont; } xpath_ctx = xmlXPathNewContext(xml_doc); char tag[PARTITION_TAG_MAX_LEN] = {'\0'}; if (lv_domain_get_tag(xpath_ctx, domname, tag) < 0) { ERROR(PLUGIN_NAME " plugin: lv_domain_get_tag failed."); goto cont; } if (!lv_instance_include_domain(inst, domname, tag)) goto cont; /* Block devices. */ if (report_block_devices) lv_add_block_devices(state, dom, domname, xpath_ctx); /* Network interfaces. */ if (report_network_interfaces) lv_add_network_interfaces(state, dom, domname, xpath_ctx); cont: if (xpath_ctx) xmlXPathFreeContext(xpath_ctx); if (xml_doc) xmlFreeDoc(xml_doc); sfree(xml); } #ifdef HAVE_LIST_ALL_DOMAINS /* NOTE: domains_active and domains_inactive data will be cleared during refresh of all domains (inside lv_clean_read_state function) so we need to free here only allocated arrays */ sfree(domains); sfree(domains_inactive); #else sfree(domids); end: #endif DEBUG(PLUGIN_NAME " plugin#%s: refreshing" " domains=%i block_devices=%i iface_devices=%i", inst->tag, state->nr_domains, state->nr_block_devices, state->nr_interface_devices); return 0; } static void free_domains(struct lv_read_state *state) { if (state->domains) { for (int i = 0; i < state->nr_domains; ++i) virDomainFree(state->domains[i].ptr); sfree(state->domains); } state->domains = NULL; state->nr_domains = 0; } static int add_domain(struct lv_read_state *state, virDomainPtr dom, bool active) { int new_size = sizeof(state->domains[0]) * (state->nr_domains + 1); domain_t *new_ptr = realloc(state->domains, new_size); if (new_ptr == NULL) { ERROR(PLUGIN_NAME " plugin: realloc failed in add_domain()"); return -1; } state->domains = new_ptr; state->domains[state->nr_domains].ptr = dom; state->domains[state->nr_domains].active = active; memset(&state->domains[state->nr_domains].info, 0, sizeof(state->domains[state->nr_domains].info)); return state->nr_domains++; } static void free_block_devices(struct lv_read_state *state) { if (state->block_devices) { for (int i = 0; i < state->nr_block_devices; ++i) sfree(state->block_devices[i].path); sfree(state->block_devices); } state->block_devices = NULL; state->nr_block_devices = 0; } static int add_block_device(struct lv_read_state *state, virDomainPtr dom, const char *path, bool has_source) { char *path_copy = strdup(path); if (!path_copy) return -1; int new_size = sizeof(state->block_devices[0]) * (state->nr_block_devices + 1); struct block_device *new_ptr = realloc(state->block_devices, new_size); if (new_ptr == NULL) { sfree(path_copy); return -1; } state->block_devices = new_ptr; state->block_devices[state->nr_block_devices].dom = dom; state->block_devices[state->nr_block_devices].path = path_copy; state->block_devices[state->nr_block_devices].has_source = has_source; return state->nr_block_devices++; } static void free_interface_devices(struct lv_read_state *state) { if (state->interface_devices) { for (int i = 0; i < state->nr_interface_devices; ++i) { sfree(state->interface_devices[i].path); sfree(state->interface_devices[i].address); sfree(state->interface_devices[i].number); } sfree(state->interface_devices); } state->interface_devices = NULL; state->nr_interface_devices = 0; } static int add_interface_device(struct lv_read_state *state, virDomainPtr dom, const char *path, const char *address, unsigned int number) { if ((path == NULL) || (address == NULL)) return EINVAL; char *path_copy = strdup(path); if (!path_copy) return -1; char *address_copy = strdup(address); if (!address_copy) { sfree(path_copy); return -1; } char number_string[21]; ssnprintf(number_string, sizeof(number_string), "interface-%u", number); char *number_copy = strdup(number_string); if (!number_copy) { sfree(path_copy); sfree(address_copy); return -1; } int new_size = sizeof(state->interface_devices[0]) * (state->nr_interface_devices + 1); struct interface_device *new_ptr = realloc(state->interface_devices, new_size); if (new_ptr == NULL) { sfree(path_copy); sfree(address_copy); sfree(number_copy); return -1; } state->interface_devices = new_ptr; state->interface_devices[state->nr_interface_devices].dom = dom; state->interface_devices[state->nr_interface_devices].path = path_copy; state->interface_devices[state->nr_interface_devices].address = address_copy; state->interface_devices[state->nr_interface_devices].number = number_copy; return state->nr_interface_devices++; } static int ignore_device_match(ignorelist_t *il, const char *domname, const char *devpath) { if ((domname == NULL) || (devpath == NULL)) return 0; size_t n = strlen(domname) + strlen(devpath) + 2; char *name = malloc(n); if (name == NULL) { ERROR(PLUGIN_NAME " plugin: malloc failed."); return 0; } ssnprintf(name, n, "%s:%s", domname, devpath); int r = ignorelist_match(il, name); sfree(name); return r; } static int lv_shutdown(void) { for (int i = 0; i < nr_instances; ++i) { lv_fini_instance(i); } if (!persistent_notification) stop_event_loop(¬if_thread); lv_disconnect(); ignorelist_free(il_domains); il_domains = NULL; ignorelist_free(il_block_devices); il_block_devices = NULL; ignorelist_free(il_interface_devices); il_interface_devices = NULL; return 0; } void module_register(void) { plugin_register_complex_config("virt", lv_config); plugin_register_init(PLUGIN_NAME, lv_init); plugin_register_shutdown(PLUGIN_NAME, lv_shutdown); }