// Partitions returns disk partitions. If all is false, returns
// physical devices only (e.g. hard disks, cd-rom drives, USB keys)
// and ignore all others (e.g. memory partitions such as /dev/shm)
//
// should use setmntent(3) but this implement use /etc/mtab file
func Partitions(all bool) ([]PartitionStat, error) {
filename := common.HostEtc("mtab")
lines, err := common.ReadLines(filename)
if err != nil {
return nil, err
}
fs, err := getFileSystems()
if err != nil {
return nil, err
}
ret := make([]PartitionStat, 0, len(lines))
for _, line := range lines {
fields := strings.Fields(line)
d := PartitionStat{
Device: fields[0],
Mountpoint: fields[1],
Fstype: fields[2],
Opts: fields[3],
}
if all == false {
if d.Device == "none" || !common.StringsHas(fs, d.Fstype) {
continue
}
}
ret = append(ret, d)
}
return ret, nil
}
// CgroupCPU returnes specified cgroup id CPU status.
// containerID is same as docker id if you use docker.
// If you use container via systemd.slice, you could use
// containerID = docker-<container id>.scope and base=/sys/fs/cgroup/cpuacct/system.slice/
func CgroupCPU(containerID string, base string) (*cpu.TimesStat, error) {
statfile := getCgroupFilePath(containerID, base, "cpuacct", "cpuacct.stat")
lines, err := common.ReadLines(statfile)
if err != nil {
return nil, err
}
// empty containerID means all cgroup
if len(containerID) == 0 {
containerID = "all"
}
ret := &cpu.TimesStat{CPU: containerID}
for _, line := range lines {
fields := strings.Split(line, " ")
if fields[0] == "user" {
user, err := strconv.ParseFloat(fields[1], 64)
if err == nil {
ret.User = float64(user)
}
}
if fields[0] == "system" {
system, err := strconv.ParseFloat(fields[1], 64)
if err == nil {
ret.System = float64(system)
}
}
}
return ret, nil
}
func IOCounters() (map[string]IOCountersStat, error) {
filename := common.HostProc("diskstats")
lines, err := common.ReadLines(filename)
if err != nil {
return nil, err
}
ret := make(map[string]IOCountersStat, 0)
empty := IOCountersStat{}
for _, line := range lines {
fields := strings.Fields(line)
name := fields[2]
reads, err := strconv.ParseUint((fields[3]), 10, 64)
if err != nil {
return ret, err
}
rbytes, err := strconv.ParseUint((fields[5]), 10, 64)
if err != nil {
return ret, err
}
rtime, err := strconv.ParseUint((fields[6]), 10, 64)
if err != nil {
return ret, err
}
writes, err := strconv.ParseUint((fields[7]), 10, 64)
if err != nil {
return ret, err
}
wbytes, err := strconv.ParseUint((fields[9]), 10, 64)
if err != nil {
return ret, err
}
wtime, err := strconv.ParseUint((fields[10]), 10, 64)
if err != nil {
return ret, err
}
iotime, err := strconv.ParseUint((fields[12]), 10, 64)
if err != nil {
return ret, err
}
d := IOCountersStat{
ReadBytes: rbytes * SectorSize,
WriteBytes: wbytes * SectorSize,
ReadCount: reads,
WriteCount: writes,
ReadTime: rtime,
WriteTime: wtime,
IoTime: iotime,
}
if d == empty {
continue
}
d.Name = name
d.SerialNumber = GetDiskSerialNumber(name)
ret[name] = d
}
return ret, nil
}
func processInet(file string, kind netConnectionKindType, inodes map[string][]inodeMap, filterPid int32) ([]connTmp, error) {
if strings.HasSuffix(file, "6") && !common.PathExists(file) {
// IPv6 not supported, return empty.
return []connTmp{}, nil
}
lines, err := common.ReadLines(file)
if err != nil {
return nil, err
}
var ret []connTmp
// skip first line
for _, line := range lines[1:] {
l := strings.Fields(line)
if len(l) < 10 {
continue
}
laddr := l[1]
raddr := l[2]
status := l[3]
inode := l[9]
pid := int32(0)
fd := uint32(0)
i, exists := inodes[inode]
if exists {
pid = i[0].pid
fd = i[0].fd
}
if filterPid > 0 && filterPid != pid {
continue
}
if kind.sockType == syscall.SOCK_STREAM {
status = TCPStatuses[status]
} else {
status = "NONE"
}
la, err := decodeAddress(kind.family, laddr)
if err != nil {
continue
}
ra, err := decodeAddress(kind.family, raddr)
if err != nil {
continue
}
ret = append(ret, connTmp{
fd: fd,
family: kind.family,
sockType: kind.sockType,
laddr: la,
raddr: ra,
status: status,
pid: pid,
})
}
return ret, nil
}
func finishCPUInfo(c *InfoStat) error {
if c.Mhz == 0 {
lines, err := common.ReadLines(sysCPUPath(c.CPU, "cpufreq/cpuinfo_max_freq"))
if err == nil {
value, err := strconv.ParseFloat(lines[0], 64)
if err != nil {
return err
}
c.Mhz = value
}
}
if len(c.CoreID) == 0 {
lines, err := common.ReadLines(sysCPUPath(c.CPU, "topology/coreId"))
if err == nil {
c.CoreID = lines[0]
}
}
return nil
}
func Info() (*InfoStat, error) {
ret := &InfoStat{
OS: runtime.GOOS,
}
hostname, err := os.Hostname()
if err == nil {
ret.Hostname = hostname
}
platform, family, version, err := PlatformInformation()
if err == nil {
ret.Platform = platform
ret.PlatformFamily = family
ret.PlatformVersion = version
}
kernelVersion, err := KernelVersion()
if err == nil {
ret.KernelVersion = kernelVersion
}
system, role, err := Virtualization()
if err == nil {
ret.VirtualizationSystem = system
ret.VirtualizationRole = role
}
boot, err := BootTime()
if err == nil {
ret.BootTime = boot
ret.Uptime = uptime(boot)
}
if numProcs, err := common.NumProcs(); err == nil {
ret.Procs = numProcs
}
sysProductUUID := common.HostSys("class/dmi/id/product_uuid")
switch {
case common.PathExists(sysProductUUID):
lines, err := common.ReadLines(sysProductUUID)
if err == nil && len(lines) > 0 && lines[0] != "" {
ret.HostID = lines[0]
break
}
fallthrough
default:
values, err := common.DoSysctrl("kernel.random.boot_id")
if err == nil && len(values) == 1 && values[0] != "" {
ret.HostID = values[0]
}
}
return ret, nil
}
// NetProtoCounters returns network statistics for the entire system
// If protocols is empty then all protocols are returned, otherwise
// just the protocols in the list are returned.
// Available protocols:
// ip,icmp,icmpmsg,tcp,udp,udplite
func ProtoCounters(protocols []string) ([]ProtoCountersStat, error) {
if len(protocols) == 0 {
protocols = netProtocols
}
stats := make([]ProtoCountersStat, 0, len(protocols))
protos := make(map[string]bool, len(protocols))
for _, p := range protocols {
protos[p] = true
}
filename := common.HostProc("net/snmp")
lines, err := common.ReadLines(filename)
if err != nil {
return nil, err
}
linecount := len(lines)
for i := 0; i < linecount; i++ {
line := lines[i]
r := strings.IndexRune(line, ':')
if r == -1 {
return nil, errors.New(filename + " is not fomatted correctly, expected ':'.")
}
proto := strings.ToLower(line[:r])
if !protos[proto] {
// skip protocol and data line
i++
continue
}
// Read header line
statNames := strings.Split(line[r+2:], " ")
// Read data line
i++
statValues := strings.Split(lines[i][r+2:], " ")
if len(statNames) != len(statValues) {
return nil, errors.New(filename + " is not fomatted correctly, expected same number of columns.")
}
stat := ProtoCountersStat{
Protocol: proto,
Stats: make(map[string]int64, len(statNames)),
}
for j := range statNames {
value, err := strconv.ParseInt(statValues[j], 10, 64)
if err != nil {
return nil, err
}
stat.Stats[statNames[j]] = value
}
stats = append(stats, stat)
}
return stats, nil
}
// getCgroupMemFile reads a cgroup file and return the contents as uint64.
func getCgroupMemFile(containerID, base, file string) (uint64, error) {
statfile := getCgroupFilePath(containerID, base, "memory", file)
lines, err := common.ReadLines(statfile)
if err != nil {
return 0, err
}
if len(lines) != 1 {
return 0, fmt.Errorf("wrong format file: %s", statfile)
}
return strconv.ParseUint(lines[0], 10, 64)
}
func getLSB() (*LSB, error) {
ret := &LSB{}
if common.PathExists(common.HostEtc("lsb-release")) {
contents, err := common.ReadLines(common.HostEtc("lsb-release"))
if err != nil {
return ret, err // return empty
}
for _, line := range contents {
field := strings.Split(line, "=")
if len(field) < 2 {
continue
}
switch field[0] {
case "DISTRIB_ID":
ret.ID = field[1]
case "DISTRIB_RELEASE":
ret.Release = field[1]
case "DISTRIB_CODENAME":
ret.Codename = field[1]
case "DISTRIB_DESCRIPTION":
ret.Description = field[1]
}
}
} else if common.PathExists("/usr/bin/lsb_release") {
lsb_release, err := exec.LookPath("/usr/bin/lsb_release")
if err != nil {
return ret, err
}
out, err := exec.Command(lsb_release).Output()
if err != nil {
return ret, err
}
for _, line := range strings.Split(string(out), "\n") {
field := strings.Split(line, ":")
if len(field) < 2 {
continue
}
switch field[0] {
case "Distributor ID":
ret.ID = field[1]
case "Release":
ret.Release = field[1]
case "Codename":
ret.Codename = field[1]
case "Description":
ret.Description = field[1]
}
}
}
return ret, nil
}
// Returns only one InfoStat on FreeBSD. The information regarding core
// count, however is accurate and it is assumed that all InfoStat attributes
// are the same across CPUs.
func Info() ([]InfoStat, error) {
const dmesgBoot = "/var/run/dmesg.boot"
lines, _ := common.ReadLines(dmesgBoot)
c := InfoStat{}
var vals []string
var err error
if vals, err = common.DoSysctrl("hw.clockrate"); err != nil {
return nil, err
}
if c.Mhz, err = strconv.ParseFloat(vals[0], 64); err != nil {
return nil, fmt.Errorf("Unable to parse FreeBSD CPU clock rate: %v", err)
}
c.CPU = int32(c.Mhz)
if vals, err = common.DoSysctrl("hw.ncpu"); err != nil {
return nil, err
}
var i64 int64
if i64, err = strconv.ParseInt(vals[0], 10, 32); err != nil {
return nil, fmt.Errorf("Unable to parse FreeBSD cores: %v", err)
}
c.Cores = int32(i64)
if vals, err = common.DoSysctrl("hw.model"); err != nil {
return nil, err
}
c.ModelName = strings.Join(vals, " ")
for _, line := range lines {
if matches := regexp.MustCompile(`Origin\s*=\s*"(.+)"\s+Id\s*=\s*(.+)\s+Family\s*=\s*(.+)\s+Model\s*=\s*(.+)\s+Stepping\s*=\s*(.+)`).FindStringSubmatch(line); matches != nil {
c.VendorID = matches[1]
c.Family = matches[3]
c.Model = matches[4]
t, err := strconv.ParseInt(matches[5], 10, 32)
if err != nil {
return nil, fmt.Errorf("Unable to parse FreeBSD CPU stepping information from %q: %v", line, err)
}
c.Stepping = int32(t)
} else if matches := regexp.MustCompile(`Features=.+<(.+)>`).FindStringSubmatch(line); matches != nil {
for _, v := range strings.Split(matches[1], ",") {
c.Flags = append(c.Flags, strings.ToLower(v))
}
} else if matches := regexp.MustCompile(`Features2=[a-f\dx]+<(.+)>`).FindStringSubmatch(line); matches != nil {
for _, v := range strings.Split(matches[1], ",") {
c.Flags = append(c.Flags, strings.ToLower(v))
}
}
}
return []InfoStat{c}, nil
}
func VirtualMemory() (*VirtualMemoryStat, error) {
filename := common.HostProc("meminfo")
lines, _ := common.ReadLines(filename)
// flag if MemAvailable is in /proc/meminfo (kernel 3.14+)
memavail := false
ret := &VirtualMemoryStat{}
for _, line := range lines {
fields := strings.Split(line, ":")
if len(fields) != 2 {
continue
}
key := strings.TrimSpace(fields[0])
value := strings.TrimSpace(fields[1])
value = strings.Replace(value, " kB", "", -1)
t, err := strconv.ParseUint(value, 10, 64)
if err != nil {
return ret, err
}
switch key {
case "MemTotal":
ret.Total = t * 1024
case "MemFree":
ret.Free = t * 1024
case "MemAvailable":
memavail = true
ret.Available = t * 1024
case "Buffers":
ret.Buffers = t * 1024
case "Cached":
ret.Cached = t * 1024
case "Active":
ret.Active = t * 1024
case "Inactive":
ret.Inactive = t * 1024
case "Writeback":
ret.Writeback = t * 1024
case "WritebackTmp":
ret.WritebackTmp = t * 1024
case "Dirty":
ret.Dirty = t * 1024
}
}
if !memavail {
ret.Available = ret.Free + ret.Buffers + ret.Cached
}
ret.Used = ret.Total - ret.Available
ret.UsedPercent = float64(ret.Total-ret.Available) / float64(ret.Total) * 100.0
return ret, nil
}
func processUnix(file string, kind netConnectionKindType, inodes map[string][]inodeMap, filterPid int32) ([]connTmp, error) {
lines, err := common.ReadLines(file)
if err != nil {
return nil, err
}
var ret []connTmp
// skip first line
for _, line := range lines[1:] {
tokens := strings.Fields(line)
if len(tokens) < 6 {
continue
}
st, err := strconv.Atoi(tokens[4])
if err != nil {
return nil, err
}
inode := tokens[6]
var pairs []inodeMap
pairs, exists := inodes[inode]
if !exists {
pairs = []inodeMap{
inodeMap{},
}
}
for _, pair := range pairs {
if filterPid > 0 && filterPid != pair.pid {
continue
}
var path string
if len(tokens) == 8 {
path = tokens[len(tokens)-1]
}
ret = append(ret, connTmp{
fd: pair.fd,
family: kind.family,
sockType: uint32(st),
laddr: Addr{
IP: path,
},
pid: pair.pid,
status: "NONE",
path: path,
})
}
}
return ret, nil
}
func KernelVersion() (version string, err error) {
filename := common.HostProc("sys/kernel/osrelease")
if common.PathExists(filename) {
contents, err := common.ReadLines(filename)
if err != nil {
return "", err
}
if len(contents) > 0 {
version = contents[0]
}
}
return version, nil
}
func finishCPUInfo(c *InfoStat) error {
var lines []string
var err error
var value float64
if len(c.CoreID) == 0 {
lines, err = common.ReadLines(sysCPUPath(c.CPU, "topology/core_id"))
if err == nil {
c.CoreID = lines[0]
}
}
// override the value of c.Mhz with cpufreq/cpuinfo_max_freq regardless
// of the value from /proc/cpuinfo because we want to report the maximum
// clock-speed of the CPU for c.Mhz, matching the behaviour of Windows
lines, err = common.ReadLines(sysCPUPath(c.CPU, "cpufreq/cpuinfo_max_freq"))
// if we encounter errors below but has a value from parsing /proc/cpuinfo
// then we ignore the error
if err != nil {
if c.Mhz == 0 {
return err
} else {
return nil
}
}
value, err = strconv.ParseFloat(lines[0], 64)
if err != nil {
if c.Mhz == 0 {
return err
} else {
return nil
}
}
c.Mhz = value / 1000.0 // value is in kHz
return nil
}
// Returns only one CPUInfoStat on FreeBSD
func Info() ([]InfoStat, error) {
filename := "/var/run/dmesg.boot"
lines, _ := common.ReadLines(filename)
var ret []InfoStat
c := InfoStat{}
for _, line := range lines {
if matches := regexp.MustCompile(`CPU:\s+(.+) \(([\d.]+).+\)`).FindStringSubmatch(line); matches != nil {
c.ModelName = matches[1]
t, err := strconv.ParseFloat(matches[2], 64)
if err != nil {
return ret, nil
}
c.Mhz = t
} else if matches := regexp.MustCompile(`Origin = "(.+)" Id = (.+) Family = (.+) Model = (.+) Stepping = (.+)`).FindStringSubmatch(line); matches != nil {
c.VendorID = matches[1]
c.Family = matches[3]
c.Model = matches[4]
t, err := strconv.ParseInt(matches[5], 10, 32)
if err != nil {
return ret, nil
}
c.Stepping = int32(t)
} else if matches := regexp.MustCompile(`Features=.+<(.+)>`).FindStringSubmatch(line); matches != nil {
for _, v := range strings.Split(matches[1], ",") {
c.Flags = append(c.Flags, strings.ToLower(v))
}
} else if matches := regexp.MustCompile(`Features2=[a-f\dx]+<(.+)>`).FindStringSubmatch(line); matches != nil {
for _, v := range strings.Split(matches[1], ",") {
c.Flags = append(c.Flags, strings.ToLower(v))
}
} else if matches := regexp.MustCompile(`Logical CPUs per core: (\d+)`).FindStringSubmatch(line); matches != nil {
// FIXME: no this line?
t, err := strconv.ParseInt(matches[1], 10, 32)
if err != nil {
return ret, nil
}
c.Cores = int32(t)
}
}
return append(ret, c), nil
}
func getOSRelease() (platform string, version string, err error) {
contents, err := common.ReadLines(common.HostEtc("os-release"))
if err != nil {
return "", "", nil // return empty
}
for _, line := range contents {
field := strings.Split(line, "=")
if len(field) < 2 {
continue
}
switch field[0] {
case "ID": // use ID for lowercase
platform = field[1]
case "VERSION":
version = field[1]
}
}
return platform, version, nil
}
func SwapMemory() (*SwapMemoryStat, error) {
sysinfo := &syscall.Sysinfo_t{}
if err := syscall.Sysinfo(sysinfo); err != nil {
return nil, err
}
ret := &SwapMemoryStat{
Total: uint64(sysinfo.Totalswap) * uint64(sysinfo.Unit),
Free: uint64(sysinfo.Freeswap) * uint64(sysinfo.Unit),
}
ret.Used = ret.Total - ret.Free
//check Infinity
if ret.Total != 0 {
ret.UsedPercent = float64(ret.Total-ret.Free) / float64(ret.Total) * 100.0
} else {
ret.UsedPercent = 0
}
filename := common.HostProc("vmstat")
lines, _ := common.ReadLines(filename)
for _, l := range lines {
fields := strings.Fields(l)
if len(fields) < 2 {
continue
}
switch fields[0] {
case "pswpin":
value, err := strconv.ParseUint(fields[1], 10, 64)
if err != nil {
continue
}
ret.Sin = value * 4 * 1024
case "pswpout":
value, err := strconv.ParseUint(fields[1], 10, 64)
if err != nil {
continue
}
ret.Sout = value * 4 * 1024
}
}
return ret, nil
}
// getFileSystems returns supported filesystems from /proc/filesystems
func getFileSystems() ([]string, error) {
filename := common.HostProc("filesystems")
lines, err := common.ReadLines(filename)
if err != nil {
return nil, err
}
var ret []string
for _, line := range lines {
if !strings.HasPrefix(line, "nodev") {
ret = append(ret, strings.TrimSpace(line))
continue
}
t := strings.Split(line, "\t")
if len(t) != 2 || t[1] != "zfs" {
continue
}
ret = append(ret, strings.TrimSpace(t[1]))
}
return ret, nil
}
// BootTime returns the system boot time expressed in seconds since the epoch.
func BootTime() (uint64, error) {
filename := common.HostProc("stat")
lines, err := common.ReadLines(filename)
if err != nil {
return 0, err
}
for _, line := range lines {
if strings.HasPrefix(line, "btime") {
f := strings.Fields(line)
if len(f) != 2 {
return 0, fmt.Errorf("wrong btime format")
}
b, err := strconv.ParseInt(f[1], 10, 64)
if err != nil {
return 0, err
}
return uint64(b), nil
}
}
return 0, fmt.Errorf("could not find btime")
}
// Get disk partitions.
// should use setmntent(3) but this implement use /etc/mtab file
func Partitions(all bool) ([]PartitionStat, error) {
filename := common.HostEtc("mtab")
lines, err := common.ReadLines(filename)
if err != nil {
return nil, err
}
ret := make([]PartitionStat, 0, len(lines))
for _, line := range lines {
fields := strings.Fields(line)
d := PartitionStat{
Device: fields[0],
Mountpoint: fields[1],
Fstype: fields[2],
Opts: fields[3],
}
ret = append(ret, d)
}
return ret, nil
}
// CgroupCPU returnes specified cgroup id CPU status.
// containerid is same as docker id if you use docker.
// If you use container via systemd.slice, you could use
// containerid = docker-<container id>.scope and base=/sys/fs/cgroup/cpuacct/system.slice/
func CgroupCPU(containerid string, base string) (*cpu.CPUTimesStat, error) {
if len(base) == 0 {
base = common.HostSys("fs/cgroup/cpuacct/docker")
}
statfile := path.Join(base, containerid, "cpuacct.stat")
if _, err := os.Stat(statfile); os.IsNotExist(err) {
statfile = path.Join(common.HostSys("fs/cgroup/cpuacct/system.slice"), "docker-"+containerid+".scope", "cpuacct.stat")
}
lines, err := common.ReadLines(statfile)
if err != nil {
return nil, err
}
// empty containerid means all cgroup
if len(containerid) == 0 {
containerid = "all"
}
ret := &cpu.CPUTimesStat{CPU: containerid}
for _, line := range lines {
fields := strings.Split(line, " ")
if fields[0] == "user" {
user, err := strconv.ParseFloat(fields[1], 64)
if err == nil {
ret.User = float64(user)
}
}
if fields[0] == "system" {
system, err := strconv.ParseFloat(fields[1], 64)
if err == nil {
ret.System = float64(system)
}
}
}
return ret, nil
}
func Virtualization() (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
}
func IOCountersByFile(pernic bool, filename string) ([]IOCountersStat, error) {
lines, err := common.ReadLines(filename)
if err != nil {
return nil, err
}
statlen := len(lines) - 1
ret := make([]IOCountersStat, 0, statlen)
for _, line := range lines[2:] {
parts := strings.SplitN(line, ":", 2)
if len(parts) != 2 {
continue
}
interfaceName := strings.TrimSpace(parts[0])
if interfaceName == "" {
continue
}
fields := strings.Fields(strings.TrimSpace(parts[1]))
bytesRecv, err := strconv.ParseUint(fields[0], 10, 64)
if err != nil {
return ret, err
}
packetsRecv, err := strconv.ParseUint(fields[1], 10, 64)
if err != nil {
return ret, err
}
errIn, err := strconv.ParseUint(fields[2], 10, 64)
if err != nil {
return ret, err
}
dropIn, err := strconv.ParseUint(fields[3], 10, 64)
if err != nil {
return ret, err
}
bytesSent, err := strconv.ParseUint(fields[8], 10, 64)
if err != nil {
return ret, err
}
packetsSent, err := strconv.ParseUint(fields[9], 10, 64)
if err != nil {
return ret, err
}
errOut, err := strconv.ParseUint(fields[10], 10, 64)
if err != nil {
return ret, err
}
dropOut, err := strconv.ParseUint(fields[13], 10, 64)
if err != nil {
return ret, err
}
nic := IOCountersStat{
Name: interfaceName,
BytesRecv: bytesRecv,
PacketsRecv: packetsRecv,
Errin: errIn,
Dropin: dropIn,
BytesSent: bytesSent,
PacketsSent: packetsSent,
Errout: errOut,
Dropout: dropOut,
}
ret = append(ret, nic)
}
if pernic == false {
return getIOCountersAll(ret)
}
return ret, nil
}
// CPUInfo on linux will return 1 item per physical thread.
//
// CPUs have three levels of counting: sockets, cores, threads.
// Cores with HyperThreading count as having 2 threads per core.
// Sockets often come with many physical CPU cores.
// For example a single socket board with two cores each with HT will
// return 4 CPUInfoStat structs on Linux and the "Cores" field set to 1.
func Info() ([]InfoStat, error) {
filename := common.HostProc("cpuinfo")
lines, _ := common.ReadLines(filename)
var ret []InfoStat
c := InfoStat{CPU: -1, Cores: 1}
for _, line := range lines {
fields := strings.Split(line, ":")
if len(fields) < 2 {
continue
}
key := strings.TrimSpace(fields[0])
value := strings.TrimSpace(fields[1])
switch key {
case "processor":
if c.CPU >= 0 {
err := finishCPUInfo(&c)
if err != nil {
return ret, err
}
ret = append(ret, c)
}
c = InfoStat{Cores: 1}
t, err := strconv.ParseInt(value, 10, 64)
if err != nil {
return ret, err
}
c.CPU = int32(t)
case "vendorId", "vendor_id":
c.VendorID = value
case "cpu family":
c.Family = value
case "model":
c.Model = value
case "model name", "cpu":
c.ModelName = value
if strings.Contains(value, "POWER8") ||
strings.Contains(value, "POWER7") {
c.Model = strings.Split(value, " ")[0]
c.Family = "POWER"
c.VendorID = "IBM"
}
case "stepping", "revision":
val := value
if key == "revision" {
val = strings.Split(value, ".")[0]
}
t, err := strconv.ParseInt(val, 10, 64)
if err != nil {
return ret, err
}
c.Stepping = int32(t)
case "cpu MHz", "clock":
// treat this as the fallback value, thus we ignore error
if t, err := strconv.ParseFloat(strings.Replace(value, "MHz", "", 1), 64); err == nil {
c.Mhz = t
}
case "cache size":
t, err := strconv.ParseInt(strings.Replace(value, " KB", "", 1), 10, 64)
if err != nil {
return ret, err
}
c.CacheSize = int32(t)
case "physical id":
c.PhysicalID = value
case "core id":
c.CoreID = value
case "flags", "Features":
c.Flags = strings.FieldsFunc(value, func(r rune) bool {
return r == ',' || r == ' '
})
}
}
if c.CPU >= 0 {
err := finishCPUInfo(&c)
if err != nil {
return ret, err
}
ret = append(ret, c)
}
return ret, nil
}
func CgroupMem(containerid string, base string) (*CgroupMemStat, error) {
if len(base) == 0 {
base = common.HostSys("fs/cgroup/memory/docker")
}
statfile := path.Join(base, containerid, "memory.stat")
if _, err := os.Stat(statfile); os.IsNotExist(err) {
statfile = path.Join(common.HostSys("fs/cgroup/memory/system.slice"), "docker-"+containerid+".scope", "memory.stat")
}
// empty containerid means all cgroup
if len(containerid) == 0 {
containerid = "all"
}
lines, err := common.ReadLines(statfile)
if err != nil {
return nil, err
}
ret := &CgroupMemStat{ContainerID: containerid}
for _, line := range lines {
fields := strings.Split(line, " ")
v, err := strconv.ParseUint(fields[1], 10, 64)
if err != nil {
continue
}
switch fields[0] {
case "cache":
ret.Cache = v
case "rss":
ret.RSS = v
case "rss_huge":
ret.RSSHuge = v
case "mapped_file":
ret.MappedFile = v
case "pgpgin":
ret.Pgpgin = v
case "pgpgout":
ret.Pgpgout = v
case "pgfault":
ret.Pgfault = v
case "pgmajfault":
ret.Pgmajfault = v
case "inactive_anon":
ret.InactiveAnon = v
case "active_anon":
ret.ActiveAnon = v
case "inactive_file":
ret.InactiveFile = v
case "active_file":
ret.ActiveFile = v
case "unevictable":
ret.Unevictable = v
case "hierarchical_memory_limit":
ret.HierarchicalMemoryLimit = v
case "total_cache":
ret.TotalCache = v
case "total_rss":
ret.TotalRSS = v
case "total_rss_huge":
ret.TotalRSSHuge = v
case "total_mapped_file":
ret.TotalMappedFile = v
case "total_pgpgin":
ret.TotalPgpgIn = v
case "total_pgpgout":
ret.TotalPgpgOut = v
case "total_pgfault":
ret.TotalPgFault = v
case "total_pgmajfault":
ret.TotalPgMajFault = v
case "total_inactive_anon":
ret.TotalInactiveAnon = v
case "total_active_anon":
ret.TotalActiveAnon = v
case "total_inactive_file":
ret.TotalInactiveFile = v
case "total_active_file":
ret.TotalActiveFile = v
case "total_unevictable":
ret.TotalUnevictable = v
}
}
return ret, nil
}
func IOCounters() (map[string]IOCountersStat, error) {
filename := common.HostProc("diskstats")
lines, err := common.ReadLines(filename)
if err != nil {
return nil, err
}
ret := make(map[string]IOCountersStat, 0)
empty := IOCountersStat{}
for _, line := range lines {
fields := strings.Fields(line)
if len(fields) < 14 {
// malformed line in /proc/diskstats, avoid panic by ignoring.
continue
}
name := fields[2]
reads, err := strconv.ParseUint((fields[3]), 10, 64)
if err != nil {
return ret, err
}
mergedReads, err := strconv.ParseUint((fields[4]), 10, 64)
if err != nil {
return ret, err
}
rbytes, err := strconv.ParseUint((fields[5]), 10, 64)
if err != nil {
return ret, err
}
rtime, err := strconv.ParseUint((fields[6]), 10, 64)
if err != nil {
return ret, err
}
writes, err := strconv.ParseUint((fields[7]), 10, 64)
if err != nil {
return ret, err
}
mergedWrites, err := strconv.ParseUint((fields[8]), 10, 64)
if err != nil {
return ret, err
}
wbytes, err := strconv.ParseUint((fields[9]), 10, 64)
if err != nil {
return ret, err
}
wtime, err := strconv.ParseUint((fields[10]), 10, 64)
if err != nil {
return ret, err
}
iopsInProgress, err := strconv.ParseUint((fields[11]), 10, 64)
if err != nil {
return ret, err
}
iotime, err := strconv.ParseUint((fields[12]), 10, 64)
if err != nil {
return ret, err
}
weightedIO, err := strconv.ParseUint((fields[13]), 10, 64)
if err != nil {
return ret, err
}
d := IOCountersStat{
ReadBytes: rbytes * SectorSize,
WriteBytes: wbytes * SectorSize,
ReadCount: reads,
WriteCount: writes,
MergedReadCount: mergedReads,
MergedWriteCount: mergedWrites,
ReadTime: rtime,
WriteTime: wtime,
IopsInProgress: iopsInProgress,
IoTime: iotime,
WeightedIO: weightedIO,
}
if d == empty {
continue
}
d.Name = name
d.SerialNumber = GetDiskSerialNumber(name)
ret[name] = d
}
return ret, nil
}
func CgroupMem(containerID string, base string) (*CgroupMemStat, error) {
statfile := getCgroupFilePath(containerID, base, "memory", "memory.stat")
// empty containerID means all cgroup
if len(containerID) == 0 {
containerID = "all"
}
lines, err := common.ReadLines(statfile)
if err != nil {
return nil, err
}
ret := &CgroupMemStat{ContainerID: containerID}
for _, line := range lines {
fields := strings.Split(line, " ")
v, err := strconv.ParseUint(fields[1], 10, 64)
if err != nil {
continue
}
switch fields[0] {
case "cache":
ret.Cache = v
case "rss":
ret.RSS = v
case "rssHuge":
ret.RSSHuge = v
case "mappedFile":
ret.MappedFile = v
case "pgpgin":
ret.Pgpgin = v
case "pgpgout":
ret.Pgpgout = v
case "pgfault":
ret.Pgfault = v
case "pgmajfault":
ret.Pgmajfault = v
case "inactiveAnon":
ret.InactiveAnon = v
case "activeAnon":
ret.ActiveAnon = v
case "inactiveFile":
ret.InactiveFile = v
case "activeFile":
ret.ActiveFile = v
case "unevictable":
ret.Unevictable = v
case "hierarchicalMemoryLimit":
ret.HierarchicalMemoryLimit = v
case "totalCache":
ret.TotalCache = v
case "totalRss":
ret.TotalRSS = v
case "totalRssHuge":
ret.TotalRSSHuge = v
case "totalMappedFile":
ret.TotalMappedFile = v
case "totalPgpgin":
ret.TotalPgpgIn = v
case "totalPgpgout":
ret.TotalPgpgOut = v
case "totalPgfault":
ret.TotalPgFault = v
case "totalPgmajfault":
ret.TotalPgMajFault = v
case "totalInactiveAnon":
ret.TotalInactiveAnon = v
case "totalActiveAnon":
ret.TotalActiveAnon = v
case "totalInactiveFile":
ret.TotalInactiveFile = v
case "totalActiveFile":
ret.TotalActiveFile = v
case "totalUnevictable":
ret.TotalUnevictable = v
}
}
r, err := getCgroupMemFile(containerID, base, "memory.usage_in_bytes")
if err == nil {
ret.MemUsageInBytes = r
}
r, err = getCgroupMemFile(containerID, base, "memory.max_usage_in_bytes")
if err == nil {
ret.MemMaxUsageInBytes = r
}
r, err = getCgroupMemFile(containerID, base, "memoryLimitInBbytes")
if err == nil {
ret.MemLimitInBytes = r
}
r, err = getCgroupMemFile(containerID, base, "memoryFailcnt")
if err == nil {
ret.MemFailCnt = r
}
return ret, nil
}
// CPUInfo on linux will return 1 item per physical thread.
//
// CPUs have three levels of counting: sockets, cores, threads.
// Cores with HyperThreading count as having 2 threads per core.
// Sockets often come with many physical CPU cores.
// For example a single socket board with two cores each with HT will
// return 4 CPUInfoStat structs on Linux and the "Cores" field set to 1.
func Info() ([]InfoStat, error) {
filename := common.HostProc("cpuinfo")
lines, _ := common.ReadLines(filename)
var ret []InfoStat
c := InfoStat{CPU: -1, Cores: 1}
for _, line := range lines {
fields := strings.Split(line, ":")
if len(fields) < 2 {
continue
}
key := strings.TrimSpace(fields[0])
value := strings.TrimSpace(fields[1])
switch key {
case "processor":
if c.CPU >= 0 {
err := finishCPUInfo(&c)
if err != nil {
return ret, err
}
ret = append(ret, c)
}
c = InfoStat{Cores: 1}
t, err := strconv.ParseInt(value, 10, 64)
if err != nil {
return ret, err
}
c.CPU = int32(t)
case "vendorId":
c.VendorID = value
case "cpu family":
c.Family = value
case "model":
c.Model = value
case "model name":
c.ModelName = value
case "stepping":
t, err := strconv.ParseInt(value, 10, 64)
if err != nil {
return ret, err
}
c.Stepping = int32(t)
case "cpu MHz":
t, err := strconv.ParseFloat(value, 64)
if err != nil {
return ret, err
}
c.Mhz = t
case "cache size":
t, err := strconv.ParseInt(strings.Replace(value, " KB", "", 1), 10, 64)
if err != nil {
return ret, err
}
c.CacheSize = int32(t)
case "physical id":
c.PhysicalID = value
case "core id":
c.CoreID = value
case "flags", "Features":
c.Flags = strings.FieldsFunc(value, func(r rune) bool {
return r == ',' || r == ' '
})
}
}
if c.CPU >= 0 {
err := finishCPUInfo(&c)
if err != nil {
return ret, err
}
ret = append(ret, c)
}
return ret, nil
}
func PlatformInformation() (platform string, family string, version string, err error) {
lsb, err := getLSB()
if err != nil {
lsb = &LSB{}
}
if common.PathExists(common.HostEtc("oracle-release")) {
platform = "oracle"
contents, err := common.ReadLines(common.HostEtc("oracle-release"))
if err == nil {
version = getRedhatishVersion(contents)
}
} else if common.PathExists(common.HostEtc("enterprise-release")) {
platform = "oracle"
contents, err := common.ReadLines(common.HostEtc("enterprise-release"))
if err == nil {
version = getRedhatishVersion(contents)
}
} else if common.PathExists(common.HostEtc("debian_version")) {
if lsb.ID == "Ubuntu" {
platform = "ubuntu"
version = lsb.Release
} else if lsb.ID == "LinuxMint" {
platform = "linuxmint"
version = lsb.Release
} else {
if common.PathExists("/usr/bin/raspi-config") {
platform = "raspbian"
} else {
platform = "debian"
}
contents, err := common.ReadLines(common.HostEtc("debian_version"))
if err == nil {
version = contents[0]
}
}
} else if common.PathExists(common.HostEtc("redhat-release")) {
contents, err := common.ReadLines(common.HostEtc("redhat-release"))
if err == nil {
version = getRedhatishVersion(contents)
platform = getRedhatishPlatform(contents)
}
} else if common.PathExists(common.HostEtc("system-release")) {
contents, err := common.ReadLines(common.HostEtc("system-release"))
if err == nil {
version = getRedhatishVersion(contents)
platform = getRedhatishPlatform(contents)
}
} else if common.PathExists(common.HostEtc("gentoo-release")) {
platform = "gentoo"
contents, err := common.ReadLines(common.HostEtc("gentoo-release"))
if err == nil {
version = getRedhatishVersion(contents)
}
} else if common.PathExists(common.HostEtc("SuSE-release")) {
contents, err := common.ReadLines(common.HostEtc("SuSE-release"))
if err == nil {
version = getSuseVersion(contents)
platform = getSusePlatform(contents)
}
// TODO: slackware detecion
} else if common.PathExists(common.HostEtc("arch-release")) {
platform = "arch"
version = lsb.Release
} else if lsb.ID == "RedHat" {
platform = "redhat"
version = lsb.Release
} else if lsb.ID == "Amazon" {
platform = "amazon"
version = lsb.Release
} else if lsb.ID == "ScientificSL" {
platform = "scientific"
version = lsb.Release
} else if lsb.ID == "XenServer" {
platform = "xenserver"
version = lsb.Release
} else if lsb.ID != "" {
platform = strings.ToLower(lsb.ID)
version = lsb.Release
}
switch platform {
case "debian", "ubuntu", "linuxmint", "raspbian":
family = "debian"
case "fedora":
family = "fedora"
case "oracle", "centos", "redhat", "scientific", "enterpriseenterprise", "amazon", "xenserver", "cloudlinux", "ibm_powerkvm":
family = "rhel"
case "suse", "opensuse":
family = "suse"
case "gentoo":
family = "gentoo"
case "slackware":
family = "slackware"
case "arch":
family = "arch"
case "exherbo":
family = "exherbo"
}
return platform, family, version, nil
}