telegraf/plugins/system/memory.go

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package system
import (
"fmt"
"github.com/influxdb/telegraf/plugins"
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)
type MemStats struct {
ps PS
}
func (_ *MemStats) Description() string {
return "Read metrics about memory usage"
}
func (_ *MemStats) SampleConfig() string { return "" }
func (s *MemStats) Gather(acc plugins.Accumulator) error {
vm, err := s.ps.VMStat()
if err != nil {
return fmt.Errorf("error getting virtual memory info: %s", err)
}
vmtags := map[string]string(nil)
acc.Add("total", vm.Total, vmtags)
acc.Add("available", vm.Available, vmtags)
acc.Add("used", vm.Used, vmtags)
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acc.Add("used_perc", vm.UsedPercent, vmtags)
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acc.Add("free", vm.Free, vmtags)
acc.Add("active", vm.Active, vmtags)
acc.Add("inactive", vm.Inactive, vmtags)
acc.Add("buffers", vm.Buffers, vmtags)
acc.Add("cached", vm.Cached, vmtags)
acc.Add("wired", vm.Wired, vmtags)
acc.Add("shared", vm.Shared, vmtags)
return nil
}
type SwapStats struct {
ps PS
}
func (_ *SwapStats) Description() string {
return "Read metrics about swap memory usage"
}
func (_ *SwapStats) SampleConfig() string { return "" }
func (s *SwapStats) Gather(acc plugins.Accumulator) error {
swap, err := s.ps.SwapStat()
if err != nil {
return fmt.Errorf("error getting swap memory info: %s", err)
}
swaptags := map[string]string(nil)
acc.Add("total", swap.Total, swaptags)
acc.Add("used", swap.Used, swaptags)
acc.Add("free", swap.Free, swaptags)
acc.Add("used_perc", swap.UsedPercent, swaptags)
acc.Add("in", swap.Sin, swaptags)
acc.Add("out", swap.Sout, swaptags)
return nil
}
func init() {
plugins.Add("mem", func() plugins.Plugin {
return &MemStats{ps: &systemPS{}}
})
plugins.Add("swap", func() plugins.Plugin {
return &SwapStats{ps: &systemPS{}}
})
}