mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-28 23:19:46 -08:00
98 lines
2.6 KiB
Go
98 lines
2.6 KiB
Go
// +build !nonetdev
|
|
|
|
package collector
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"strconv"
|
|
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
)
|
|
|
|
/*
|
|
#cgo CFLAGS: -D_IFI_OQDROPS
|
|
#include <stdio.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <ifaddrs.h>
|
|
#include <net/if.h>
|
|
*/
|
|
import "C"
|
|
|
|
type netDevCollector struct {
|
|
subsystem string
|
|
metricDescs map[string]*prometheus.Desc
|
|
}
|
|
|
|
func init() {
|
|
Factories["netdev"] = NewNetDevCollector
|
|
}
|
|
|
|
// Takes a prometheus registry and returns a new Collector exposing
|
|
// Network device stats.
|
|
func NewNetDevCollector() (Collector, error) {
|
|
return &netDevCollector{
|
|
subsystem: "network",
|
|
metricDescs: map[string]*prometheus.Desc{},
|
|
}, nil
|
|
}
|
|
|
|
func (c *netDevCollector) Update(ch chan<- prometheus.Metric) (err error) {
|
|
netDev, err := getNetDevStats()
|
|
if err != nil {
|
|
return fmt.Errorf("couldn't get netstats: %s", err)
|
|
}
|
|
for dev, devStats := range netDev {
|
|
for key, value := range devStats {
|
|
desc, ok := c.metricDescs[key]
|
|
if !ok {
|
|
desc = prometheus.NewDesc(
|
|
prometheus.BuildFQName(Namespace, c.subsystem, key),
|
|
fmt.Sprintf("%s from getifaddrs().", key),
|
|
[]string{"device"},
|
|
nil,
|
|
)
|
|
c.metricDescs[key] = desc
|
|
}
|
|
v, err := strconv.ParseFloat(value, 64)
|
|
if err != nil {
|
|
return fmt.Errorf("invalid value %s in netstats: %s", value, err)
|
|
}
|
|
ch <- prometheus.MustNewConstMetric(desc, prometheus.GaugeValue, v, dev)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func getNetDevStats() (map[string]map[string]string, error) {
|
|
netDev := map[string]map[string]string{}
|
|
|
|
var ifap, ifa *C.struct_ifaddrs
|
|
if C.getifaddrs(&ifap) == -1 {
|
|
return nil, errors.New("getifaddrs() failed")
|
|
}
|
|
defer C.freeifaddrs(ifap)
|
|
|
|
for ifa = ifap; ifa != nil; ifa = ifa.ifa_next {
|
|
if ifa.ifa_addr.sa_family == C.AF_LINK {
|
|
devStats := map[string]string{}
|
|
data := (*C.struct_if_data)(ifa.ifa_data)
|
|
|
|
devStats["receive_packets"] = strconv.Itoa(int(data.ifi_ipackets))
|
|
devStats["transmit_packets"] = strconv.Itoa(int(data.ifi_opackets))
|
|
devStats["receive_errs"] = strconv.Itoa(int(data.ifi_ierrors))
|
|
devStats["transmit_errs"] = strconv.Itoa(int(data.ifi_oerrors))
|
|
devStats["receive_bytes"] = strconv.Itoa(int(data.ifi_ibytes))
|
|
devStats["transmit_bytes"] = strconv.Itoa(int(data.ifi_obytes))
|
|
devStats["receive_multicast"] = strconv.Itoa(int(data.ifi_imcasts))
|
|
devStats["transmit_multicast"] = strconv.Itoa(int(data.ifi_omcasts))
|
|
devStats["receive_drop"] = strconv.Itoa(int(data.ifi_iqdrops))
|
|
devStats["transmit_drop"] = strconv.Itoa(int(data.ifi_oqdrops))
|
|
netDev[C.GoString(ifa.ifa_name)] = devStats
|
|
}
|
|
}
|
|
|
|
return netDev, nil
|
|
}
|