diff options
Diffstat (limited to 'collectors/xenstat.plugin')
| -rw-r--r-- | collectors/xenstat.plugin/Makefile.am | 8 | ||||
| -rw-r--r-- | collectors/xenstat.plugin/README.md | 53 | ||||
| -rw-r--r-- | collectors/xenstat.plugin/xenstat_plugin.c | 1106 |
3 files changed, 1167 insertions, 0 deletions
diff --git a/collectors/xenstat.plugin/Makefile.am b/collectors/xenstat.plugin/Makefile.am new file mode 100644 index 0000000..161784b --- /dev/null +++ b/collectors/xenstat.plugin/Makefile.am @@ -0,0 +1,8 @@ +# SPDX-License-Identifier: GPL-3.0-or-later + +AUTOMAKE_OPTIONS = subdir-objects +MAINTAINERCLEANFILES = $(srcdir)/Makefile.in + +dist_noinst_DATA = \ + README.md \ + $(NULL) diff --git a/collectors/xenstat.plugin/README.md b/collectors/xenstat.plugin/README.md new file mode 100644 index 0000000..61be271 --- /dev/null +++ b/collectors/xenstat.plugin/README.md @@ -0,0 +1,53 @@ +<!-- +title: "xenstat.plugin" +custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/xenstat.plugin/README.md +--> + +# xenstat.plugin + +`xenstat.plugin` collects XenServer and XCP-ng statistics. + +## Prerequisites + +1. install `xen-dom0-libs-devel` and `yajl-devel` using the package manager of your system. + Note: On Cent-OS systems you will need `centos-release-xen` repository and the required package for xen is `xen-devel` + +2. re-install Netdata from source. The installer will detect that the required libraries are now available and will also build xenstat.plugin. + +Keep in mind that `libxenstat` requires root access, so the plugin is setuid to root. + +## Charts + +The plugin provides XenServer and XCP-ng host and domains statistics: + +Host: + +1. Number of domains. + +Domain: + +1. CPU. +2. Memory. +3. Networks. +4. VBDs. + +## Configuration + +If you need to disable xenstat for Netdata, edit /etc/netdata/netdata.conf and set: + +``` +[plugins] + xenstat = no +``` + +## Debugging + +You can run the plugin by hand: + +``` +sudo /usr/libexec/netdata/plugins.d/xenstat.plugin 1 debug +``` + +You will get verbose output on what the plugin does. + +[](<>) diff --git a/collectors/xenstat.plugin/xenstat_plugin.c b/collectors/xenstat.plugin/xenstat_plugin.c new file mode 100644 index 0000000..647ac1d --- /dev/null +++ b/collectors/xenstat.plugin/xenstat_plugin.c @@ -0,0 +1,1106 @@ +// SPDX-License-Identifier: GPL-3.0-or-later + +#include "../../libnetdata/libnetdata.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; + +#ifdef HAVE_LIBXENSTAT +#include <xenstat.h> +#include <libxl.h> + +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"); +} + +#else // !HAVE_LIBXENSTAT + +int main(int argc, char **argv) { + (void)argc; + (void)argv; + + fatal("xenstat.plugin is not compiled."); +} + +#endif // !HAVE_LIBXENSTAT |