/
ps.go
229 lines (192 loc) · 5.62 KB
/
ps.go
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package system
import (
"errors"
"os"
"path/filepath"
"strings"
"github.com/shirou/gopsutil/v3/cpu"
"github.com/shirou/gopsutil/v3/disk"
"github.com/shirou/gopsutil/v3/mem"
"github.com/shirou/gopsutil/v3/net"
"github.com/influxdata/telegraf"
"github.com/influxdata/telegraf/internal"
)
type PS interface {
CPUTimes(perCPU, totalCPU bool) ([]cpu.TimesStat, error)
DiskUsage(mountPointFilter []string, mountOptsExclude []string, fstypeExclude []string) ([]*disk.UsageStat, []*disk.PartitionStat, error)
NetIO() ([]net.IOCountersStat, error)
NetProto() ([]net.ProtoCountersStat, error)
DiskIO(names []string) (map[string]disk.IOCountersStat, error)
VMStat() (*mem.VirtualMemoryStat, error)
SwapStat() (*mem.SwapMemoryStat, error)
NetConnections() ([]net.ConnectionStat, error)
NetConntrack(perCPU bool) ([]net.ConntrackStat, error)
}
type PSDiskDeps interface {
Partitions(all bool) ([]disk.PartitionStat, error)
OSGetenv(key string) string
OSStat(name string) (os.FileInfo, error)
PSDiskUsage(path string) (*disk.UsageStat, error)
}
func NewSystemPS() *SystemPS {
return &SystemPS{PSDiskDeps: &SystemPSDisk{}}
}
type SystemPS struct {
PSDiskDeps
Log telegraf.Logger `toml:"-"`
}
type SystemPSDisk struct{}
func (s *SystemPS) CPUTimes(perCPU, totalCPU bool) ([]cpu.TimesStat, error) {
var cpuTimes []cpu.TimesStat
if perCPU {
perCPUTimes, err := cpu.Times(true)
if err != nil {
return nil, err
}
cpuTimes = append(cpuTimes, perCPUTimes...)
}
if totalCPU {
totalCPUTimes, err := cpu.Times(false)
if err != nil {
return nil, err
}
cpuTimes = append(cpuTimes, totalCPUTimes...)
}
return cpuTimes, nil
}
type set struct {
m map[string]struct{}
}
func (s *set) empty() bool {
return len(s.m) == 0
}
func (s *set) add(key string) {
s.m[key] = struct{}{}
}
func (s *set) has(key string) bool {
var ok bool
_, ok = s.m[key]
return ok
}
func newSet() *set {
s := &set{
m: make(map[string]struct{}),
}
return s
}
func (s *SystemPS) DiskUsage(
mountPointFilter []string,
mountOptsExclude []string,
fstypeExclude []string,
) ([]*disk.UsageStat, []*disk.PartitionStat, error) {
parts, err := s.Partitions(true)
if err != nil {
return nil, nil, err
}
mountPointFilterSet := newSet()
for _, filter := range mountPointFilter {
mountPointFilterSet.add(filter)
}
mountOptFilterSet := newSet()
for _, filter := range mountOptsExclude {
mountOptFilterSet.add(filter)
}
fstypeExcludeSet := newSet()
for _, filter := range fstypeExclude {
fstypeExcludeSet.add(filter)
}
paths := newSet()
for _, part := range parts {
paths.add(part.Mountpoint)
}
// Autofs mounts indicate a potential mount, the partition will also be
// listed with the actual filesystem when mounted. Ignore the autofs
// partition to avoid triggering a mount.
fstypeExcludeSet.add("autofs")
var usage []*disk.UsageStat
var partitions []*disk.PartitionStat
hostMountPrefix := s.OSGetenv("HOST_MOUNT_PREFIX")
partitionRange:
for i := range parts {
p := parts[i]
for _, o := range p.Opts {
if !mountOptFilterSet.empty() && mountOptFilterSet.has(o) {
continue partitionRange
}
}
// If there is a filter set and if the mount point is not a
// member of the filter set, don't gather info on it.
if !mountPointFilterSet.empty() && !mountPointFilterSet.has(p.Mountpoint) {
continue
}
// If the mount point is a member of the exclude set,
// don't gather info on it.
if fstypeExcludeSet.has(p.Fstype) {
continue
}
// If there's a host mount prefix use it as newer gopsutil version check for
// the init's mountpoints usually pointing to the host-mountpoint but in the
// container. This won't work for checking the disk-usage as the disks are
// mounted at HOST_MOUNT_PREFIX...
mountpoint := p.Mountpoint
if hostMountPrefix != "" && !strings.HasPrefix(p.Mountpoint, hostMountPrefix) {
mountpoint = filepath.Join(hostMountPrefix, p.Mountpoint)
// Exclude conflicting paths
if paths.has(mountpoint) {
if s.Log != nil {
s.Log.Debugf("[SystemPS] => dropped by mount prefix (%q): %q", mountpoint, hostMountPrefix)
}
continue
}
}
du, err := s.PSDiskUsage(mountpoint)
if err != nil {
if s.Log != nil {
s.Log.Debugf("[SystemPS] => unable to get disk usage (%q): %v", mountpoint, err)
}
continue
}
du.Path = filepath.Join(string(os.PathSeparator), strings.TrimPrefix(p.Mountpoint, hostMountPrefix))
du.Fstype = p.Fstype
usage = append(usage, du)
partitions = append(partitions, &p)
}
return usage, partitions, nil
}
func (s *SystemPS) NetProto() ([]net.ProtoCountersStat, error) {
return net.ProtoCounters(nil)
}
func (s *SystemPS) NetIO() ([]net.IOCountersStat, error) {
return net.IOCounters(true)
}
func (s *SystemPS) NetConnections() ([]net.ConnectionStat, error) {
return net.Connections("all")
}
func (s *SystemPS) NetConntrack(perCPU bool) ([]net.ConntrackStat, error) {
return net.ConntrackStats(perCPU)
}
func (s *SystemPS) DiskIO(names []string) (map[string]disk.IOCountersStat, error) {
m, err := disk.IOCounters(names...)
if errors.Is(err, internal.ErrNotImplemented) {
return nil, nil
}
return m, err
}
func (s *SystemPS) VMStat() (*mem.VirtualMemoryStat, error) {
return mem.VirtualMemory()
}
func (s *SystemPS) SwapStat() (*mem.SwapMemoryStat, error) {
return mem.SwapMemory()
}
func (s *SystemPSDisk) Partitions(all bool) ([]disk.PartitionStat, error) {
return disk.Partitions(all)
}
func (s *SystemPSDisk) OSGetenv(key string) string {
return os.Getenv(key)
}
func (s *SystemPSDisk) OSStat(name string) (os.FileInfo, error) {
return os.Stat(name)
}
func (s *SystemPSDisk) PSDiskUsage(path string) (*disk.UsageStat, error) {
return disk.Usage(path)
}