/
diskio.go
210 lines (179 loc) · 4.51 KB
/
diskio.go
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package diskio
import (
"fmt"
"log"
"strings"
"time"
"github.com/bingoohuang/berf/pkg/filter"
"github.com/bingoohuang/berf/pkg/util"
"github.com/bingoohuang/berf/plugins"
"github.com/bingoohuang/berf/plugins/internal"
"github.com/bingoohuang/berf/plugins/system"
"github.com/shirou/gopsutil/v3/disk"
)
type DiskIO struct {
ps system.PS
Devices []string
infoCache map[string]diskInfoCache
deviceFilter filter.Filter
names map[string]bool
gCurNetStats []ioStat
gPrevNetStats []ioStat
lastStatsTime time.Time
}
func (d *DiskIO) Series() plugins.Series {
ps := plugins.Series{}
diskio, err := d.diskIO()
if err != nil {
log.Printf("E! error getting disk io info: %s", err.Error())
return ps
}
d.names = make(map[string]bool)
for _, io := range diskio {
if len(diskio) > 1 && !d.match(io.Name) {
continue
}
d.names[io.Name] = true
}
for _, io := range diskio {
pp := io.Name
if !d.names[io.Name] {
continue
}
if len(d.names) == 1 {
pp = ""
} else {
pp += ":"
}
ps.Series = append(ps.Series,
pp+"reads",
pp+"writes",
pp+"read_bytes",
pp+"write_bytes",
pp+"read_time",
pp+"write_time",
pp+"io_time",
)
ps.Selected = append(ps.Selected,
pp+"read_bytes",
pp+"write_bytes")
}
return ps
}
// hasMeta reports whether s contains any special glob characters.
func hasMeta(s string) bool {
return strings.ContainsAny(s, "*?[")
}
func (d *DiskIO) Init() error {
for _, device := range d.Devices {
if hasMeta(device) {
deviceFilter, err := filter.Compile(d.Devices)
if err != nil {
return fmt.Errorf("error compiling device pattern: %s", err.Error())
}
d.deviceFilter = deviceFilter
}
}
return nil
}
func (d *DiskIO) Gather() ([]interface{}, error) {
diskio, err := d.diskIO()
if err != nil {
return nil, err
}
var stats []ioStat
for _, io := range diskio {
if !d.names[io.Name] {
continue
}
stats = append(stats, ioStat{
Name: io.Name,
ReadCount: io.ReadCount,
WriteCount: io.WriteCount,
ReadBytes: io.ReadBytes,
WriteBytes: io.WriteBytes,
ReadTime: io.ReadTime,
WriteTime: io.WriteTime,
IoTime: io.IoTime,
})
}
return d.diff(stats), nil
}
func (d *DiskIO) diskIO() (map[string]disk.IOCountersStat, error) {
var devices []string
if d.deviceFilter == nil {
devices = d.Devices
}
diskio, err := d.ps.DiskIO(devices)
if err != nil {
return nil, fmt.Errorf("error getting disk io info: %s", err.Error())
}
return diskio, nil
}
func (d *DiskIO) match(name string) bool {
if d.deviceFilter != nil && d.deviceFilter.Match(name) {
return true
}
return d.deviceFilter == nil
}
func (d *DiskIO) diff(stat []ioStat) []interface{} {
d.gPrevNetStats = d.gCurNetStats
d.gCurNetStats = stat
du := time.Since(d.lastStatsTime)
d.lastStatsTime = time.Now()
var points []interface{}
for _, ns := range d.gCurNetStats {
di := getStatDiff(ns, d.gPrevNetStats)
points = append(points,
util.NumberToRate(di.ReadCount, du),
util.NumberToRate(di.WriteCount, du),
util.BytesToMBS(di.ReadBytes, du),
util.BytesToMBS(di.WriteBytes, du),
util.Float64(di.ReadTime),
util.Float64(di.WriteTime),
util.Float64(di.IoTime),
)
}
return points
}
func getStatDiff(cur ioStat, pre []ioStat) ioStat {
for _, p := range pre {
if p.Name == cur.Name {
cur.ReadCount = internal.Adjust(cur.ReadCount, p.ReadCount)
cur.WriteCount = internal.Adjust(cur.WriteCount, p.WriteCount)
cur.ReadBytes = internal.Adjust(cur.ReadBytes, p.ReadBytes)
cur.WriteBytes = internal.Adjust(cur.WriteBytes, p.WriteBytes)
cur.ReadTime = internal.Adjust(cur.ReadTime, p.ReadTime)
cur.WriteTime = internal.Adjust(cur.WriteTime, p.WriteTime)
cur.IoTime = internal.Adjust(cur.IoTime, p.IoTime)
cur.WeightedIO = internal.Adjust(cur.WeightedIO, p.WeightedIO)
cur.IopsInProgress = internal.Adjust(cur.IopsInProgress, p.IopsInProgress)
cur.MergedReadCount = internal.Adjust(cur.MergedReadCount, p.MergedReadCount)
cur.MergedWriteCount = internal.Adjust(cur.MergedWriteCount, p.MergedWriteCount)
break
}
}
return cur
}
type ioStat struct {
Name string
ReadCount uint64
WriteCount uint64
ReadBytes uint64
WriteBytes uint64
ReadTime uint64
WriteTime uint64
IoTime uint64
WeightedIO uint64
IopsInProgress uint64
MergedReadCount uint64
MergedWriteCount uint64
}
func init() {
plugins.Add("diskio", func() plugins.Input {
return &DiskIO{
ps: system.NewSystemPS(),
Devices: []string{"sda", "sdb", "vd*"},
}
})
}