ssh_crawler/stat/network.go
insanity 1552f4eaba ing
2017-10-23 14:31:04 +09:00

79 lines
1.7 KiB
Go

package stat
import (
"io"
"bufio"
"regexp"
"strings"
"fmt"
)
type NetDevStat struct {
iface,
recvByte,
recvPacket,
recvErr,
recvDrop,
recvFifo,
recvFrame,
recvCompressed,
recvMulticast,
transByte,
transPacket,
transErr,
transDrop,
transFifo,
transFrame,
transCompressed,
transMulticast string
}
func (net *NetDevStat) Command() string {
return "cat /proc/net/dev"
}
func (net *NetDevStat) Parse(r io.Reader) ([]NetDevStat, error) {
var (
scanner = bufio.NewScanner(r)
procNetDevFieldSep = regexp.MustCompile("[ :] *")
netDevStats = []NetDevStat{}
)
scanner.Scan()
scanner.Scan()
parts := strings.Split(scanner.Text(), "|")
if len(parts) != 3 { // interface + receive + transmit
return nil, fmt.Errorf("invalid header line in net/dev: %s",
scanner.Text())
}
header := strings.Fields(parts[1])
for scanner.Scan() {
line := strings.TrimLeft(scanner.Text(), " ")
parts := procNetDevFieldSep.Split(line, -1)
if len(parts) != 2*len(header)+1 {
return nil, fmt.Errorf("invalid line in net/dev: %s", scanner.Text())
}
dev := parts[0][:len(parts[0])]
netDevStats = append(netDevStats, NetDevStat{
iface: dev,
recvByte: parts[1],
recvPacket: parts[2],
recvErr: parts[3],
recvDrop: parts[4],
recvFifo: parts[5],
recvFrame: parts[6],
recvCompressed: parts[7],
recvMulticast: parts[8],
transByte: parts[9],
transPacket: parts[10],
transErr: parts[11],
transDrop: parts[12],
transFifo: parts[13],
transFrame: parts[14],
transCompressed: parts[15],
transMulticast: parts[16],
})
}
return netDevStats, scanner.Err()
}