telegraf/plugins/inputs/system/disk.go

145 lines
3.0 KiB
Go

package system
import (
"fmt"
"github.com/influxdata/telegraf/plugins/inputs"
)
type DiskStats struct {
ps PS
Mountpoints []string
}
func (_ *DiskStats) Description() string {
return "Read metrics about disk usage by mount point"
}
var diskSampleConfig = `
# By default, telegraf gather stats for all mountpoints.
# Setting mountpoints will restrict the stats to the specified mountpoints.
# Mountpoints=["/"]
`
func (_ *DiskStats) SampleConfig() string {
return diskSampleConfig
}
func (s *DiskStats) Gather(acc inputs.Accumulator) error {
disks, err := s.ps.DiskUsage()
if err != nil {
return fmt.Errorf("error getting disk usage info: %s", err)
}
var restrictMpoints bool
mPoints := make(map[string]bool)
if len(s.Mountpoints) != 0 {
restrictMpoints = true
for _, mp := range s.Mountpoints {
mPoints[mp] = true
}
}
for _, du := range disks {
_, member := mPoints[du.Path]
if restrictMpoints && !member {
continue
}
tags := map[string]string{
"path": du.Path,
"fstype": du.Fstype,
}
fields := map[string]interface{}{
"total": du.Total,
"free": du.Free,
"used": du.Total - du.Free,
"inodes_total": du.InodesTotal,
"inodes_free": du.InodesFree,
"inodes_used": du.InodesTotal - du.InodesFree,
}
acc.AddFields("disk", fields, tags)
}
return nil
}
type DiskIOStats struct {
ps PS
Devices []string
SkipSerialNumber bool
}
func (_ *DiskIOStats) Description() string {
return "Read metrics about disk IO by device"
}
var diskIoSampleConfig = `
# By default, telegraf will gather stats for all devices including
# disk partitions.
# Setting devices will restrict the stats to the specified devcies.
# devices = ["sda","sdb"]
# Uncomment the following line if you do not need disk serial numbers.
# skip_serial_number = true
`
func (_ *DiskIOStats) SampleConfig() string {
return diskIoSampleConfig
}
func (s *DiskIOStats) Gather(acc inputs.Accumulator) error {
diskio, err := s.ps.DiskIO()
if err != nil {
return fmt.Errorf("error getting disk io info: %s", err)
}
var restrictDevices bool
devices := make(map[string]bool)
if len(s.Devices) != 0 {
restrictDevices = true
for _, dev := range s.Devices {
devices[dev] = true
}
}
for _, io := range diskio {
_, member := devices[io.Name]
if restrictDevices && !member {
continue
}
tags := map[string]string{}
tags["name"] = io.Name
if !s.SkipSerialNumber {
if len(io.SerialNumber) != 0 {
tags["serial"] = io.SerialNumber
} else {
tags["serial"] = "unknown"
}
}
fields := map[string]interface{}{
"reads": io.ReadCount,
"writes": io.WriteCount,
"read_bytes": io.ReadBytes,
"write_bytes": io.WriteBytes,
"read_time": io.ReadTime,
"write_time": io.WriteTime,
"io_time": io.IoTime,
}
acc.AddFields("diskio", fields, tags)
}
return nil
}
func init() {
inputs.Add("disk", func() inputs.Input {
return &DiskStats{ps: &systemPS{}}
})
inputs.Add("diskio", func() inputs.Input {
return &DiskIOStats{ps: &systemPS{}}
})
}