node_exporter/collector/netdev_freebsd.go

111 lines
3.1 KiB
Go

// Copyright 2015 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +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
}