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