Beispiel #1
0
// example of netstat -idbn output on yosemite
// Name  Mtu   Network       Address            Ipkts Ierrs     Ibytes    Opkts Oerrs     Obytes  Coll Drop
// lo0   16384 <Link#1>                        869107     0  169411755   869107     0  169411755     0   0
// lo0   16384 ::1/128     ::1                 869107     -  169411755   869107     -  169411755     -   -
// lo0   16384 127           127.0.0.1         869107     -  169411755   869107     -  169411755     -   -
func NetIOCounters(pernic bool) ([]NetIOCountersStat, error) {
	out, err := exec.Command("/usr/sbin/netstat", "-ibdnW").Output()
	if err != nil {
		return nil, err
	}

	lines := strings.Split(string(out), "\n")
	ret := make([]NetIOCountersStat, 0, len(lines)-1)
	exists := make([]string, 0, len(ret))

	for _, line := range lines {
		values := strings.Fields(line)
		if len(values) < 1 || values[0] == "Name" {
			// skip first line
			continue
		}
		if common.StringsHas(exists, values[0]) {
			// skip if already get
			continue
		}
		exists = append(exists, values[0])

		base := 1
		// sometimes Address is ommitted
		if len(values) < 11 {
			base = 0
		}

		parsed := make([]uint64, 0, 7)
		vv := []string{
			values[base+3], // Ipkts == PacketsRecv
			values[base+4], // Ierrs == Errin
			values[base+5], // Ibytes == BytesRecv
			values[base+6], // Opkts == PacketsSent
			values[base+7], // Oerrs == Errout
			values[base+8], // Obytes == BytesSent
		}
		if len(values) == 12 {
			vv = append(vv, values[base+10])
		}

		for _, target := range vv {
			if target == "-" {
				parsed = append(parsed, 0)
				continue
			}

			t, err := strconv.ParseUint(target, 10, 64)
			if err != nil {
				return nil, err
			}
			parsed = append(parsed, t)
		}

		n := NetIOCountersStat{
			Name:        values[0],
			PacketsRecv: parsed[0],
			Errin:       parsed[1],
			BytesRecv:   parsed[2],
			PacketsSent: parsed[3],
			Errout:      parsed[4],
			BytesSent:   parsed[5],
		}
		if len(parsed) == 7 {
			n.Dropout = parsed[6]
		}
		ret = append(ret, n)
	}

	if pernic == false {
		return getNetIOCountersAll(ret)
	}

	return ret, nil
}
Beispiel #2
0
func GetVirtualization() (string, string, error) {
	var system string
	var role string

	filename := common.HostProc("xen")
	if common.PathExists(filename) {
		system = "xen"
		role = "guest" // assume guest

		if common.PathExists(filename + "/capabilities") {
			contents, err := common.ReadLines(filename + "/capabilities")
			if err == nil {
				if common.StringsHas(contents, "control_d") {
					role = "host"
				}
			}
		}
	}

	filename = common.HostProc("modules")
	if common.PathExists(filename) {
		contents, err := common.ReadLines(filename)
		if err == nil {
			if common.StringsContains(contents, "kvm") {
				system = "kvm"
				role = "host"
			} else if common.StringsContains(contents, "vboxdrv") {
				system = "vbox"
				role = "host"
			} else if common.StringsContains(contents, "vboxguest") {
				system = "vbox"
				role = "guest"
			}
		}
	}

	filename = common.HostProc("cpuinfo")
	if common.PathExists(filename) {
		contents, err := common.ReadLines(filename)
		if err == nil {
			if common.StringsHas(contents, "QEMU Virtual CPU") ||
				common.StringsHas(contents, "Common KVM processor") ||
				common.StringsHas(contents, "Common 32-bit KVM processor") {
				system = "kvm"
				role = "guest"
			}
		}
	}

	filename = common.HostProc()
	if common.PathExists(filename + "/bc/0") {
		system = "openvz"
		role = "host"
	} else if common.PathExists(filename + "/vz") {
		system = "openvz"
		role = "guest"
	}

	// not use dmidecode because it requires root
	if common.PathExists(filename + "/self/status") {
		contents, err := common.ReadLines(filename + "/self/status")
		if err == nil {

			if common.StringsHas(contents, "s_context:") ||
				common.StringsHas(contents, "VxID:") {
				system = "linux-vserver"
			}
			// TODO: guest or host
		}
	}

	if common.PathExists(filename + "/self/cgroup") {
		contents, err := common.ReadLines(filename + "/self/cgroup")
		if err == nil {
			if common.StringsHas(contents, "lxc") ||
				common.StringsHas(contents, "docker") {
				system = "lxc"
				role = "guest"
			} else if common.PathExists("/usr/bin/lxc-version") { // TODO: which
				system = "lxc"
				role = "host"
			}
		}
	}

	return system, role, nil
}