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// SPDX-License-Identifier: GPL-3.0-or-later
#include "libnetdata/libnetdata.h"
#include <xenstat.h>
#include <libxl.h>
#define PLUGIN_XENSTAT_NAME "xenstat.plugin"
#define NETDATA_CHART_PRIO_XENSTAT_NODE_CPUS 30001
#define NETDATA_CHART_PRIO_XENSTAT_NODE_CPU_FREQ 30002
#define NETDATA_CHART_PRIO_XENSTAT_NODE_MEM 30003
#define NETDATA_CHART_PRIO_XENSTAT_NODE_TMEM 30004
#define NETDATA_CHART_PRIO_XENSTAT_NODE_DOMAINS 30005
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_STATES 30101
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_CPU 30102
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_VCPU 30103
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_MEM 30104
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_TMEM_PAGES 30104
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_TMEM_OPERATIONS 30105
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_VBD_OO_REQ 30200
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_VBD_REQUESTS 30300
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_VBD_SECTORS 30400
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_NET_BYTES 30500
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_NET_PACKETS 30600
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_NET_ERRORS 30700
#define NETDATA_CHART_PRIO_XENSTAT_DOMAIN_NET_DROPS 30800
#define TYPE_LENGTH_MAX 200
#define CHART_IS_OBSOLETE 1
#define CHART_IS_NOT_OBSOLETE 0
// callback required by fatal()
void netdata_cleanup_and_exit(int ret) {
exit(ret);
}
void send_statistics( const char *action, const char *action_result, const char *action_data) {
(void) action;
(void) action_result;
(void) action_data;
return;
}
// callbacks required by popen()
void signals_block(void) {};
void signals_unblock(void) {};
void signals_reset(void) {};
// callback required by eval()
int health_variable_lookup(const char *variable, uint32_t hash, struct rrdcalc *rc, calculated_number *result) {
(void)variable;
(void)hash;
(void)rc;
(void)result;
return 0;
};
// required by get_system_cpus()
char *netdata_configured_host_prefix = "";
// Variables
static int debug = 0;
static int netdata_update_every = 1;
struct vcpu_metrics {
unsigned int id;
unsigned int online;
unsigned long long ns;
int chart_generated;
int updated;
struct vcpu_metrics *next;
};
struct vbd_metrics {
unsigned int id;
unsigned int error;
unsigned long long oo_reqs;
unsigned long long rd_reqs;
unsigned long long wr_reqs;
unsigned long long rd_sects;
unsigned long long wr_sects;
int oo_req_chart_generated;
int requests_chart_generated;
int sectors_chart_generated;
int updated;
struct vbd_metrics *next;
};
struct network_metrics {
unsigned int id;
unsigned long long rbytes;
unsigned long long rpackets;
unsigned long long rerrs;
unsigned long long rdrops;
unsigned long long tbytes;
unsigned long long tpackets;
unsigned long long terrs;
unsigned long long tdrops;
int bytes_chart_generated;
int packets_chart_generated;
int errors_chart_generated;
int drops_chart_generated;
int updated;
struct network_metrics *next;
};
struct domain_metrics {
char *uuid;
uint32_t hash;
unsigned int id;
char *name;
// states
unsigned int running;
unsigned int blocked;
unsigned int paused;
unsigned int shutdown;
unsigned int crashed;
unsigned int dying;
unsigned int cur_vcpus;
unsigned long long cpu_ns;
unsigned long long cur_mem;
unsigned long long max_mem;
struct vcpu_metrics *vcpu_root;
struct vbd_metrics *vbd_root;
struct network_metrics *network_root;
int states_chart_generated;
int cpu_chart_generated;
int vcpu_chart_generated;
int num_vcpus_changed;
int mem_chart_generated;
int updated;
struct domain_metrics *next;
};
struct node_metrics{
unsigned long long tot_mem;
unsigned long long free_mem;
int num_domains;
unsigned int num_cpus;
unsigned long long node_cpu_hz;
struct domain_metrics *domain_root;
};
static struct node_metrics node_metrics = {
.domain_root = NULL
};
static inline struct domain_metrics *domain_metrics_get(const char *uuid, uint32_t hash) {
struct domain_metrics *d = NULL, *last = NULL;
for(d = node_metrics.domain_root; d ; last = d, d = d->next) {
if(unlikely(d->hash == hash && !strcmp(d->uuid, uuid)))
return d;
}
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: allocating memory for domain with uuid %s\n", uuid);
d = callocz(1, sizeof(struct domain_metrics));
d->uuid = strdupz(uuid);
d->hash = hash;
if(unlikely(!last)) {
d->next = node_metrics.domain_root;
node_metrics.domain_root = d;
}
else {
d->next = last->next;
last->next = d;
}
return d;
}
static struct domain_metrics *domain_metrics_free(struct domain_metrics *d) {
struct domain_metrics *cur = NULL, *last = NULL;
struct vcpu_metrics *vcpu, *vcpu_f;
struct vbd_metrics *vbd, *vbd_f;
struct network_metrics *network, *network_f;
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: freeing memory for domain '%s' id %d, uuid %s\n", d->name, d->id, d->uuid);
for(cur = node_metrics.domain_root; cur ; last = cur, cur = cur->next) {
if(unlikely(cur->hash == d->hash && !strcmp(cur->uuid, d->uuid))) break;
}
if(unlikely(!cur)) {
error("XENSTAT: failed to free domain metrics.");
return NULL;
}
if(likely(last))
last->next = cur->next;
else
node_metrics.domain_root = NULL;
freez(cur->uuid);
freez(cur->name);
vcpu = cur->vcpu_root;
while(vcpu) {
vcpu_f = vcpu;
vcpu = vcpu->next;
freez(vcpu_f);
}
vbd = cur->vbd_root;
while(vbd) {
vbd_f = vbd;
vbd = vbd->next;
freez(vbd_f);
}
network = cur->network_root;
while(network) {
network_f = network;
network = network->next;
freez(network_f);
}
freez(cur);
return last ? last : NULL;
}
static int vcpu_metrics_collect(struct domain_metrics *d, xenstat_domain *domain) {
unsigned int num_vcpus = 0;
xenstat_vcpu *vcpu = NULL;
struct vcpu_metrics *vcpu_m = NULL, *last_vcpu_m = NULL;
num_vcpus = xenstat_domain_num_vcpus(domain);
for(vcpu_m = d->vcpu_root; vcpu_m ; vcpu_m = vcpu_m->next)
vcpu_m->updated = 0;
vcpu_m = d->vcpu_root;
unsigned int i, num_online_vcpus=0;
for(i = 0; i < num_vcpus; i++) {
if(unlikely(!vcpu_m)) {
vcpu_m = callocz(1, sizeof(struct vcpu_metrics));
if(unlikely(i == 0)) d->vcpu_root = vcpu_m;
else last_vcpu_m->next = vcpu_m;
}
vcpu_m->id = i;
vcpu = xenstat_domain_vcpu(domain, i);
if(unlikely(!vcpu)) {
error("XENSTAT: cannot get VCPU statistics.");
return 1;
}
vcpu_m->online = xenstat_vcpu_online(vcpu);
if(likely(vcpu_m->online)) { num_online_vcpus++; }
vcpu_m->ns = xenstat_vcpu_ns(vcpu);
vcpu_m->updated = 1;
last_vcpu_m = vcpu_m;
vcpu_m = vcpu_m->next;
}
if(unlikely(num_online_vcpus != d->cur_vcpus)) {
d->num_vcpus_changed = 1;
d->cur_vcpus = num_online_vcpus;
}
return 0;
}
static int vbd_metrics_collect(struct domain_metrics *d, xenstat_domain *domain) {
unsigned int num_vbds = xenstat_domain_num_vbds(domain);
xenstat_vbd *vbd = NULL;
struct vbd_metrics *vbd_m = NULL, *last_vbd_m = NULL;
for(vbd_m = d->vbd_root; vbd_m ; vbd_m = vbd_m->next)
vbd_m->updated = 0;
vbd_m = d->vbd_root;
unsigned int i;
for(i = 0; i < num_vbds; i++) {
if(unlikely(!vbd_m)) {
vbd_m = callocz(1, sizeof(struct vbd_metrics));
if(unlikely(i == 0)) d->vbd_root = vbd_m;
else last_vbd_m->next = vbd_m;
}
vbd_m->id = i;
vbd = xenstat_domain_vbd(domain, i);
if(unlikely(!vbd)) {
error("XENSTAT: cannot get VBD statistics.");
return 1;
}
#ifdef HAVE_XENSTAT_VBD_ERROR
vbd_m->error = xenstat_vbd_error(vbd);
#else
vbd_m->error = 0;
#endif
vbd_m->oo_reqs = xenstat_vbd_oo_reqs(vbd);
vbd_m->rd_reqs = xenstat_vbd_rd_reqs(vbd);
vbd_m->wr_reqs = xenstat_vbd_wr_reqs(vbd);
vbd_m->rd_sects = xenstat_vbd_rd_sects(vbd);
vbd_m->wr_sects = xenstat_vbd_wr_sects(vbd);
vbd_m->updated = 1;
last_vbd_m = vbd_m;
vbd_m = vbd_m->next;
}
return 0;
}
static int network_metrics_collect(struct domain_metrics *d, xenstat_domain *domain) {
unsigned int num_networks = xenstat_domain_num_networks(domain);
xenstat_network *network = NULL;
struct network_metrics *network_m = NULL, *last_network_m = NULL;
for(network_m = d->network_root; network_m ; network_m = network_m->next)
network_m->updated = 0;
network_m = d->network_root;
unsigned int i;
for(i = 0; i < num_networks; i++) {
if(unlikely(!network_m)) {
network_m = callocz(1, sizeof(struct network_metrics));
if(unlikely(i == 0)) d->network_root = network_m;
else last_network_m->next = network_m;
}
network_m->id = i;
network = xenstat_domain_network(domain, i);
if(unlikely(!network)) {
error("XENSTAT: cannot get network statistics.");
return 1;
}
network_m->rbytes = xenstat_network_rbytes(network);
network_m->rpackets = xenstat_network_rpackets(network);
network_m->rerrs = xenstat_network_rerrs(network);
network_m->rdrops = xenstat_network_rdrop(network);
network_m->tbytes = xenstat_network_tbytes(network);
network_m->tpackets = xenstat_network_tpackets(network);
network_m->terrs = xenstat_network_terrs(network);
network_m->tdrops = xenstat_network_tdrop(network);
network_m->updated = 1;
last_network_m = network_m;
network_m = network_m->next;
}
return 0;
}
static int xenstat_collect(xenstat_handle *xhandle, libxl_ctx *ctx, libxl_dominfo *info) {
// mark all old metrics as not-updated
struct domain_metrics *d;
for(d = node_metrics.domain_root; d ; d = d->next)
d->updated = 0;
xenstat_node *node = xenstat_get_node(xhandle, XENSTAT_ALL);
if (unlikely(!node)) {
error("XENSTAT: failed to retrieve statistics from libxenstat.");
return 1;
}
node_metrics.tot_mem = xenstat_node_tot_mem(node);
node_metrics.free_mem = xenstat_node_free_mem(node);
node_metrics.num_domains = xenstat_node_num_domains(node);
node_metrics.num_cpus = xenstat_node_num_cpus(node);
node_metrics.node_cpu_hz = xenstat_node_cpu_hz(node);
int i;
for(i = 0; i < node_metrics.num_domains; i++) {
xenstat_domain *domain = NULL;
char uuid[LIBXL_UUID_FMTLEN + 1];
domain = xenstat_node_domain_by_index(node, i);
// get domain UUID
unsigned int id = xenstat_domain_id(domain);
if(unlikely(libxl_domain_info(ctx, info, id))) {
error("XENSTAT: cannot get domain info.");
}
else {
snprintfz(uuid, LIBXL_UUID_FMTLEN, LIBXL_UUID_FMT "\n", LIBXL_UUID_BYTES(info->uuid));
}
uint32_t hash = simple_hash(uuid);
d = domain_metrics_get(uuid, hash);
d->id = id;
if(unlikely(!d->name)) {
d->name = strdupz(xenstat_domain_name(domain));
netdata_fix_chart_id(d->name);
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: domain id %d, uuid %s has name '%s'\n", d->id, d->uuid, d->name);
}
d->running = xenstat_domain_running(domain);
d->blocked = xenstat_domain_blocked(domain);
d->paused = xenstat_domain_paused(domain);
d->shutdown = xenstat_domain_shutdown(domain);
d->crashed = xenstat_domain_crashed(domain);
d->dying = xenstat_domain_dying(domain);
d->cpu_ns = xenstat_domain_cpu_ns(domain);
d->cur_mem = xenstat_domain_cur_mem(domain);
d->max_mem = xenstat_domain_max_mem(domain);
if(unlikely(vcpu_metrics_collect(d, domain) || vbd_metrics_collect(d, domain) || network_metrics_collect(d, domain))) {
xenstat_free_node(node);
return 1;
}
d->updated = 1;
}
xenstat_free_node(node);
return 0;
}
static void xenstat_send_node_metrics() {
static int mem_chart_generated = 0, domains_chart_generated = 0, cpus_chart_generated = 0, cpu_freq_chart_generated = 0;
// ----------------------------------------------------------------
if(unlikely(!mem_chart_generated)) {
printf("CHART xenstat.mem '' 'Memory Usage' 'MiB' 'memory' '' stacked %d %d '' %s\n"
, NETDATA_CHART_PRIO_XENSTAT_NODE_MEM
, netdata_update_every
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION %s '' absolute 1 %d\n", "free", netdata_update_every * 1024 * 1024);
printf("DIMENSION %s '' absolute 1 %d\n", "used", netdata_update_every * 1024 * 1024);
mem_chart_generated = 1;
}
printf(
"BEGIN xenstat.mem\n"
"SET free = %lld\n"
"SET used = %lld\n"
"END\n"
, (collected_number) node_metrics.free_mem
, (collected_number) (node_metrics.tot_mem - node_metrics.free_mem)
);
// ----------------------------------------------------------------
if(unlikely(!domains_chart_generated)) {
printf("CHART xenstat.domains '' 'Number of Domains' 'domains' 'domains' '' line %d %d '' %s\n"
, NETDATA_CHART_PRIO_XENSTAT_NODE_DOMAINS
, netdata_update_every
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION %s '' absolute 1 %d\n", "domains", netdata_update_every);
domains_chart_generated = 1;
}
printf(
"BEGIN xenstat.domains\n"
"SET domains = %lld\n"
"END\n"
, (collected_number) node_metrics.num_domains
);
// ----------------------------------------------------------------
if(unlikely(!cpus_chart_generated)) {
printf("CHART xenstat.cpus '' 'Number of CPUs' 'cpus' 'cpu' '' line %d %d '' %s\n"
, NETDATA_CHART_PRIO_XENSTAT_NODE_CPUS
, netdata_update_every
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION %s '' absolute 1 %d\n", "cpus", netdata_update_every);
cpus_chart_generated = 1;
}
printf(
"BEGIN xenstat.cpus\n"
"SET cpus = %lld\n"
"END\n"
, (collected_number) node_metrics.num_cpus
);
// ----------------------------------------------------------------
if(unlikely(!cpu_freq_chart_generated)) {
printf("CHART xenstat.cpu_freq '' 'CPU Frequency' 'MHz' 'cpu' '' line %d %d '' %s\n"
, NETDATA_CHART_PRIO_XENSTAT_NODE_CPU_FREQ
, netdata_update_every
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION %s '' absolute 1 %d\n", "frequency", netdata_update_every * 1024 * 1024);
cpu_freq_chart_generated = 1;
}
printf(
"BEGIN xenstat.cpu_freq\n"
"SET frequency = %lld\n"
"END\n"
, (collected_number) node_metrics.node_cpu_hz
);
}
static void print_domain_states_chart_definition(char *type, int obsolete_flag) {
printf("CHART %s.states '' 'Domain States' 'boolean' 'states' 'xendomain.states' line %d %d %s %s\n"
, type
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_STATES
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION running '' absolute 1 %d\n", netdata_update_every);
printf("DIMENSION blocked '' absolute 1 %d\n", netdata_update_every);
printf("DIMENSION paused '' absolute 1 %d\n", netdata_update_every);
printf("DIMENSION shutdown '' absolute 1 %d\n", netdata_update_every);
printf("DIMENSION crashed '' absolute 1 %d\n", netdata_update_every);
printf("DIMENSION dying '' absolute 1 %d\n", netdata_update_every);
}
static void print_domain_cpu_chart_definition(char *type, int obsolete_flag) {
printf("CHART %s.cpu '' 'CPU Usage (100%% = 1 core)' 'percentage' 'cpu' 'xendomain.cpu' line %d %d %s %s\n"
, type
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_CPU
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION used '' incremental 100 %d\n", netdata_update_every * 1000000000);
}
static void print_domain_mem_chart_definition(char *type, int obsolete_flag) {
printf("CHART %s.mem '' 'Memory Reservation' 'MiB' 'memory' 'xendomain.mem' line %d %d %s %s\n"
, type
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_MEM
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION maximum '' absolute 1 %d\n", netdata_update_every * 1024 * 1024);
printf("DIMENSION current '' absolute 1 %d\n", netdata_update_every * 1024 * 1024);
}
static void print_domain_vcpu_chart_definition(char *type, struct domain_metrics *d, int obsolete_flag) {
struct vcpu_metrics *vcpu_m;
printf("CHART %s.vcpu '' 'CPU Usage per VCPU' 'percentage' 'cpu' 'xendomain.vcpu' line %d %d %s %s\n"
, type
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_VCPU
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
for(vcpu_m = d->vcpu_root; vcpu_m; vcpu_m = vcpu_m->next) {
if(likely(vcpu_m->updated && vcpu_m->online)) {
printf("DIMENSION vcpu%u '' incremental 100 %d\n", vcpu_m->id, netdata_update_every * 1000000000);
}
}
}
static void print_domain_vbd_oo_chart_definition(char *type, unsigned int vbd, int obsolete_flag) {
printf("CHART %s.oo_req_vbd%u '' 'VBD%u \"Out Of\" Requests' 'requests/s' 'vbd' 'xendomain.oo_req_vbd' line %d %d %s %s\n"
, type
, vbd
, vbd
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_VBD_OO_REQ + vbd
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION requests '' incremental 1 %d\n", netdata_update_every);
}
static void print_domain_vbd_requests_chart_definition(char *type, unsigned int vbd, int obsolete_flag) {
printf("CHART %s.requests_vbd%u '' 'VBD%u Requests' 'requests/s' 'vbd' 'xendomain.requests_vbd' line %d %d %s %s\n"
, type
, vbd
, vbd
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_VBD_REQUESTS + vbd
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION read '' incremental 1 %d\n", netdata_update_every);
printf("DIMENSION write '' incremental -1 %d\n", netdata_update_every);
}
static void print_domain_vbd_sectors_chart_definition(char *type, unsigned int vbd, int obsolete_flag) {
printf("CHART %s.sectors_vbd%u '' 'VBD%u Read/Written Sectors' 'sectors/s' 'vbd' 'xendomain.sectors_vbd' line %d %d %s %s\n"
, type
, vbd
, vbd
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_VBD_SECTORS + vbd
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION read '' incremental 1 %d\n", netdata_update_every);
printf("DIMENSION write '' incremental -1 %d\n", netdata_update_every);
}
static void print_domain_network_bytes_chart_definition(char *type, unsigned int network, int obsolete_flag) {
printf("CHART %s.bytes_network%u '' 'Network%u Received/Sent Bytes' 'kilobits/s' 'network' 'xendomain.bytes_network' line %d %d %s %s\n"
, type
, network
, network
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_NET_BYTES + network
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION received '' incremental 8 %d\n", netdata_update_every * 1000);
printf("DIMENSION sent '' incremental -8 %d\n", netdata_update_every * 1000);
}
static void print_domain_network_packets_chart_definition(char *type, unsigned int network, int obsolete_flag) {
printf("CHART %s.packets_network%u '' 'Network%u Received/Sent Packets' 'packets/s' 'network' 'xendomain.packets_network' line %d %d %s %s\n"
, type
, network
, network
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_NET_PACKETS + network
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION received '' incremental 1 %d\n", netdata_update_every);
printf("DIMENSION sent '' incremental -1 %d\n", netdata_update_every);
}
static void print_domain_network_errors_chart_definition(char *type, unsigned int network, int obsolete_flag) {
printf("CHART %s.errors_network%u '' 'Network%u Receive/Transmit Errors' 'errors/s' 'network' 'xendomain.errors_network' line %d %d %s %s\n"
, type
, network
, network
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_NET_PACKETS + network
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION received '' incremental 1 %d\n", netdata_update_every);
printf("DIMENSION sent '' incremental -1 %d\n", netdata_update_every);
}
static void print_domain_network_drops_chart_definition(char *type, unsigned int network, int obsolete_flag) {
printf("CHART %s.drops_network%u '' 'Network%u Receive/Transmit Drops' 'drops/s' 'network' 'xendomain.drops_network' line %d %d %s %s\n"
, type
, network
, network
, NETDATA_CHART_PRIO_XENSTAT_DOMAIN_NET_PACKETS + network
, netdata_update_every
, obsolete_flag ? "obsolete": "''"
, PLUGIN_XENSTAT_NAME
);
printf("DIMENSION received '' incremental 1 %d\n", netdata_update_every);
printf("DIMENSION sent '' incremental -1 %d\n", netdata_update_every);
}
static void xenstat_send_domain_metrics() {
if(unlikely(!node_metrics.domain_root)) return;
struct domain_metrics *d;
for(d = node_metrics.domain_root; d; d = d->next) {
char type[TYPE_LENGTH_MAX + 1];
snprintfz(type, TYPE_LENGTH_MAX, "xendomain_%s_%s", d->name, d->uuid);
if(likely(d->updated)) {
// ----------------------------------------------------------------
if(unlikely(!d->states_chart_generated)) {
print_domain_states_chart_definition(type, CHART_IS_NOT_OBSOLETE);
d->states_chart_generated = 1;
}
printf(
"BEGIN %s.states\n"
"SET running = %lld\n"
"SET blocked = %lld\n"
"SET paused = %lld\n"
"SET shutdown = %lld\n"
"SET crashed = %lld\n"
"SET dying = %lld\n"
"END\n"
, type
, (collected_number)d->running
, (collected_number)d->blocked
, (collected_number)d->paused
, (collected_number)d->shutdown
, (collected_number)d->crashed
, (collected_number)d->dying
);
// ----------------------------------------------------------------
if(unlikely(!d->cpu_chart_generated)) {
print_domain_cpu_chart_definition(type, CHART_IS_NOT_OBSOLETE);
d->cpu_chart_generated = 1;
}
printf(
"BEGIN %s.cpu\n"
"SET used = %lld\n"
"END\n"
, type
, (collected_number)d->cpu_ns
);
// ----------------------------------------------------------------
struct vcpu_metrics *vcpu_m;
if(unlikely(!d->vcpu_chart_generated || d->num_vcpus_changed)) {
print_domain_vcpu_chart_definition(type, d, CHART_IS_NOT_OBSOLETE);
d->num_vcpus_changed = 0;
d->vcpu_chart_generated = 1;
}
printf("BEGIN %s.vcpu\n", type);
for(vcpu_m = d->vcpu_root; vcpu_m; vcpu_m = vcpu_m->next) {
if(likely(vcpu_m->updated && vcpu_m->online)) {
printf(
"SET vcpu%u = %lld\n"
, vcpu_m->id
, (collected_number)vcpu_m->ns
);
}
}
printf("END\n");
// ----------------------------------------------------------------
if(unlikely(!d->mem_chart_generated)) {
print_domain_mem_chart_definition(type, CHART_IS_NOT_OBSOLETE);
d->mem_chart_generated = 1;
}
printf(
"BEGIN %s.mem\n"
"SET maximum = %lld\n"
"SET current = %lld\n"
"END\n"
, type
, (collected_number)d->max_mem
, (collected_number)d->cur_mem
);
// ----------------------------------------------------------------
struct vbd_metrics *vbd_m;
for(vbd_m = d->vbd_root; vbd_m; vbd_m = vbd_m->next) {
if(likely(vbd_m->updated && !vbd_m->error)) {
if(unlikely(!vbd_m->oo_req_chart_generated)) {
print_domain_vbd_oo_chart_definition(type, vbd_m->id, CHART_IS_NOT_OBSOLETE);
vbd_m->oo_req_chart_generated = 1;
}
printf(
"BEGIN %s.oo_req_vbd%u\n"
"SET requests = %lld\n"
"END\n"
, type
, vbd_m->id
, (collected_number)vbd_m->oo_reqs
);
// ----------------------------------------------------------------
if(unlikely(!vbd_m->requests_chart_generated)) {
print_domain_vbd_requests_chart_definition(type, vbd_m->id, CHART_IS_NOT_OBSOLETE);
vbd_m->requests_chart_generated = 1;
}
printf(
"BEGIN %s.requests_vbd%u\n"
"SET read = %lld\n"
"SET write = %lld\n"
"END\n"
, type
, vbd_m->id
, (collected_number)vbd_m->rd_reqs
, (collected_number)vbd_m->wr_reqs
);
// ----------------------------------------------------------------
if(unlikely(!vbd_m->sectors_chart_generated)) {
print_domain_vbd_sectors_chart_definition(type, vbd_m->id, CHART_IS_NOT_OBSOLETE);
vbd_m->sectors_chart_generated = 1;
}
printf(
"BEGIN %s.sectors_vbd%u\n"
"SET read = %lld\n"
"SET write = %lld\n"
"END\n"
, type
, vbd_m->id
, (collected_number)vbd_m->rd_sects
, (collected_number)vbd_m->wr_sects
);
}
else {
if(unlikely(vbd_m->oo_req_chart_generated
|| vbd_m->requests_chart_generated
|| vbd_m->sectors_chart_generated)) {
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: mark charts as obsolete for vbd %d, domain '%s', id %d, uuid %s\n", vbd_m->id, d->name, d->id, d->uuid);
print_domain_vbd_oo_chart_definition(type, vbd_m->id, CHART_IS_OBSOLETE);
print_domain_vbd_requests_chart_definition(type, vbd_m->id, CHART_IS_OBSOLETE);
print_domain_vbd_sectors_chart_definition(type, vbd_m->id, CHART_IS_OBSOLETE);
vbd_m->oo_req_chart_generated = 0;
vbd_m->requests_chart_generated = 0;
vbd_m->sectors_chart_generated = 0;
}
}
}
// ----------------------------------------------------------------
struct network_metrics *network_m;
for(network_m = d->network_root; network_m; network_m = network_m->next) {
if(likely(network_m->updated)) {
if(unlikely(!network_m->bytes_chart_generated)) {
print_domain_network_bytes_chart_definition(type, network_m->id, CHART_IS_NOT_OBSOLETE);
network_m->bytes_chart_generated = 1;
}
printf(
"BEGIN %s.bytes_network%u\n"
"SET received = %lld\n"
"SET sent = %lld\n"
"END\n"
, type
, network_m->id
, (collected_number)network_m->rbytes
, (collected_number)network_m->tbytes
);
// ----------------------------------------------------------------
if(unlikely(!network_m->packets_chart_generated)) {
print_domain_network_packets_chart_definition(type, network_m->id, CHART_IS_NOT_OBSOLETE);
network_m->packets_chart_generated = 1;
}
printf(
"BEGIN %s.packets_network%u\n"
"SET received = %lld\n"
"SET sent = %lld\n"
"END\n"
, type
, network_m->id
, (collected_number)network_m->rpackets
, (collected_number)network_m->tpackets
);
// ----------------------------------------------------------------
if(unlikely(!network_m->errors_chart_generated)) {
print_domain_network_errors_chart_definition(type, network_m->id, CHART_IS_NOT_OBSOLETE);
network_m->errors_chart_generated = 1;
}
printf(
"BEGIN %s.errors_network%u\n"
"SET received = %lld\n"
"SET sent = %lld\n"
"END\n"
, type
, network_m->id
, (collected_number)network_m->rerrs
, (collected_number)network_m->terrs
);
// ----------------------------------------------------------------
if(unlikely(!network_m->drops_chart_generated)) {
print_domain_network_drops_chart_definition(type, network_m->id, CHART_IS_NOT_OBSOLETE);
network_m->drops_chart_generated = 1;
}
printf(
"BEGIN %s.drops_network%u\n"
"SET received = %lld\n"
"SET sent = %lld\n"
"END\n"
, type
, network_m->id
, (collected_number)network_m->rdrops
, (collected_number)network_m->tdrops
);
}
else {
if(unlikely(network_m->bytes_chart_generated
|| network_m->packets_chart_generated
|| network_m->errors_chart_generated
|| network_m->drops_chart_generated))
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: mark charts as obsolete for network %d, domain '%s', id %d, uuid %s\n", network_m->id, d->name, d->id, d->uuid);
print_domain_network_bytes_chart_definition(type, network_m->id, CHART_IS_OBSOLETE);
print_domain_network_packets_chart_definition(type, network_m->id, CHART_IS_OBSOLETE);
print_domain_network_errors_chart_definition(type, network_m->id, CHART_IS_OBSOLETE);
print_domain_network_drops_chart_definition(type, network_m->id, CHART_IS_OBSOLETE);
network_m->bytes_chart_generated = 0;
network_m->packets_chart_generated = 0;
network_m->errors_chart_generated = 0;
network_m->drops_chart_generated = 0;
}
}
}
else{
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: mark charts as obsolete for domain '%s', id %d, uuid %s\n", d->name, d->id, d->uuid);
print_domain_states_chart_definition(type, CHART_IS_OBSOLETE);
print_domain_cpu_chart_definition(type, CHART_IS_OBSOLETE);
print_domain_vcpu_chart_definition(type, d, CHART_IS_OBSOLETE);
print_domain_mem_chart_definition(type, CHART_IS_OBSOLETE);
d = domain_metrics_free(d);
}
}
}
int main(int argc, char **argv) {
// ------------------------------------------------------------------------
// initialization of netdata plugin
program_name = "xenstat.plugin";
// disable syslog
error_log_syslog = 0;
// set errors flood protection to 100 logs per hour
error_log_errors_per_period = 100;
error_log_throttle_period = 3600;
// ------------------------------------------------------------------------
// parse command line parameters
int i, freq = 0;
for(i = 1; i < argc ; i++) {
if(isdigit(*argv[i]) && !freq) {
int n = str2i(argv[i]);
if(n > 0 && n < 86400) {
freq = n;
continue;
}
}
else if(strcmp("version", argv[i]) == 0 || strcmp("-version", argv[i]) == 0 || strcmp("--version", argv[i]) == 0 || strcmp("-v", argv[i]) == 0 || strcmp("-V", argv[i]) == 0) {
printf("xenstat.plugin %s\n", VERSION);
exit(0);
}
else if(strcmp("debug", argv[i]) == 0) {
debug = 1;
continue;
}
else if(strcmp("-h", argv[i]) == 0 || strcmp("--help", argv[i]) == 0) {
fprintf(stderr,
"\n"
" netdata xenstat.plugin %s\n"
" Copyright (C) 2019 Netdata Inc.\n"
" Released under GNU General Public License v3 or later.\n"
" All rights reserved.\n"
"\n"
" This program is a data collector plugin for netdata.\n"
"\n"
" Available command line options:\n"
"\n"
" COLLECTION_FREQUENCY data collection frequency in seconds\n"
" minimum: %d\n"
"\n"
" debug enable verbose output\n"
" default: disabled\n"
"\n"
" -v\n"
" -V\n"
" --version print version and exit\n"
"\n"
" -h\n"
" --help print this message and exit\n"
"\n"
" For more information:\n"
" https://github.com/netdata/netdata/tree/master/collectors/xenstat.plugin\n"
"\n"
, VERSION
, netdata_update_every
);
exit(1);
}
error("xenstat.plugin: ignoring parameter '%s'", argv[i]);
}
errno = 0;
if(freq >= netdata_update_every)
netdata_update_every = freq;
else if(freq)
error("update frequency %d seconds is too small for XENSTAT. Using %d.", freq, netdata_update_every);
// ------------------------------------------------------------------------
// initialize xen API handles
xenstat_handle *xhandle = NULL;
libxl_ctx *ctx = NULL;
libxl_dominfo info;
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: calling xenstat_init()\n");
xhandle = xenstat_init();
if (xhandle == NULL)
error("XENSTAT: failed to initialize xenstat library.");
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: calling libxl_ctx_alloc()\n");
if (libxl_ctx_alloc(&ctx, LIBXL_VERSION, 0, NULL)) {
error("XENSTAT: failed to initialize xl context.");
}
libxl_dominfo_init(&info);
// ------------------------------------------------------------------------
// the main loop
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: starting data collection\n");
time_t started_t = now_monotonic_sec();
size_t iteration;
usec_t step = netdata_update_every * USEC_PER_SEC;
heartbeat_t hb;
heartbeat_init(&hb);
for(iteration = 0; 1; iteration++) {
usec_t dt = heartbeat_next(&hb, step);
if(unlikely(netdata_exit)) break;
if(unlikely(debug && iteration))
fprintf(stderr, "xenstat.plugin: iteration %zu, dt %llu usec\n"
, iteration
, dt
);
if(likely(xhandle)) {
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: calling xenstat_collect()\n");
int ret = xenstat_collect(xhandle, ctx, &info);
if(likely(!ret)) {
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: calling xenstat_send_node_metrics()\n");
xenstat_send_node_metrics();
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: calling xenstat_send_domain_metrics()\n");
xenstat_send_domain_metrics();
}
else {
if(unlikely(debug)) fprintf(stderr, "xenstat.plugin: can't collect data\n");
}
}
fflush(stdout);
// restart check (14400 seconds)
if(unlikely(now_monotonic_sec() - started_t > 14400)) break;
}
libxl_ctx_free(ctx);
xenstat_uninit(xhandle);
info("XENSTAT process exiting");
}
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