cc-metric-collector/collectors/netstatMetric.go

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package collectors
import (
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"fmt"
"io/ioutil"
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"log"
"strconv"
"strings"
"time"
)
const NETSTATFILE = `/proc/net/dev`
type NetstatCollector struct {
MetricCollector
}
func (m *NetstatCollector) Init() {
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m.name = "NetstatCollector"
m.setup()
}
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func (m *NetstatCollector) Read(interval time.Duration) {
data, err := ioutil.ReadFile(string(NETSTATFILE))
if err != nil {
log.Print(err.Error())
return
}
var matches = map[int]string{
1: "bytes_in",
9: "bytes_out",
2: "pkts_in",
10: "pkts_out",
}
lines := strings.Split(string(data), "\n")
for _, l := range lines {
if !strings.Contains(l, ":") {
continue
}
f := strings.Fields(l)
dev := f[0][0 : len(f[0])-1]
if dev == "lo" {
continue
}
for i, name := range matches {
v, err := strconv.ParseInt(f[i], 10, 0)
if err == nil {
m.node[fmt.Sprintf("%s_%s", dev, name)] = float64(v) * 1.0e-3
}
}
}
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}
func (m *NetstatCollector) Close() {
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return
}