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package widgets
import (
"fmt"
"sort"
"strings"
"time"
"github.com/cjbassi/gotop/src/utils"
ui "github.com/cjbassi/termui"
psDisk "github.com/shirou/gopsutil/disk"
)
type Partition struct {
Device string
Mount string
TotalRead uint64
TotalWrite uint64
CurRead string
CurWrite string
UsedPercent int
Free string
}
type Disk struct {
*ui.Table
interval time.Duration
Partitions map[string]*Partition
}
func NewDisk() *Disk {
self := &Disk{
Table: ui.NewTable(),
interval: time.Second,
Partitions: make(map[string]*Partition),
}
self.Label = "Disk Usage"
self.Header = []string{"Disk", "Mount", "Used", "Free", "R/s", "W/s"}
self.Gap = 2
self.ColResizer = self.ColResize
self.update()
ticker := time.NewTicker(self.interval)
go func() {
for range ticker.C {
self.update()
}
}()
return self
}
func (self *Disk) update() {
Partitions, _ := psDisk.Partitions(false)
// add partition if it's new
for _, Part := range Partitions {
device := strings.Replace(Part.Device, "/dev/", "", -1)
if _, ok := self.Partitions[device]; !ok {
self.Partitions[device] = &Partition{
Device: device,
Mount: Part.Mountpoint,
}
}
}
// delete a partition if it no longer exists
todelete := []string{}
for key, _ := range self.Partitions {
exists := false
for _, Part := range Partitions {
device := strings.Replace(Part.Device, "/dev/", "", -1)
if key == device {
exists = true
break
}
}
if !exists {
todelete = append(todelete, key)
}
}
for _, val := range todelete {
delete(self.Partitions, val)
}
// updates partition info
for _, Part := range self.Partitions {
usage, _ := psDisk.Usage(Part.Mount)
Part.UsedPercent = int(usage.UsedPercent)
Free, Mag := utils.ConvertBytes(usage.Free)
Part.Free = fmt.Sprintf("%3d%s", uint64(Free), Mag)
ret, _ := psDisk.IOCounters("/dev/" + Part.Device)
data := ret[Part.Device]
curRead, curWrite := data.ReadBytes, data.WriteBytes
if Part.TotalRead != 0 { // if this isn't the first update
readRecent := curRead - Part.TotalRead
writeRecent := curWrite - Part.TotalWrite
readFloat, unitRead := utils.ConvertBytes(readRecent)
writeFloat, unitWrite := utils.ConvertBytes(writeRecent)
readRecent, writeRecent = uint64(readFloat), uint64(writeFloat)
Part.CurRead = fmt.Sprintf("%d%s", readRecent, unitRead)
Part.CurWrite = fmt.Sprintf("%d%s", writeRecent, unitWrite)
} else {
Part.CurRead = fmt.Sprintf("%d%s", 0, "B")
Part.CurWrite = fmt.Sprintf("%d%s", 0, "B")
}
Part.TotalRead, Part.TotalWrite = curRead, curWrite
}
// converts self.Partitions into self.Rows which is a [][]String
sortedPartitions := []string{}
for seriesName := range self.Partitions {
sortedPartitions = append(sortedPartitions, seriesName)
}
sort.Strings(sortedPartitions)
self.Rows = make([][]string, len(self.Partitions))
for i, key := range sortedPartitions {
Part := self.Partitions[key]
self.Rows[i] = make([]string, 6)
self.Rows[i][0] = Part.Device
self.Rows[i][1] = Part.Mount
self.Rows[i][2] = fmt.Sprintf("%d%%", Part.UsedPercent)
self.Rows[i][3] = Part.Free
self.Rows[i][4] = Part.CurRead
self.Rows[i][5] = Part.CurWrite
}
}
// ColResize overrides the default ColResize in the termui table.
func (self *Disk) ColResize() {
self.ColWidths = []int{
4,
utils.Max(5, self.X-33),
4, 5, 5, 5,
}
self.CellXPos = []int{}
cur := 1
for _, w := range self.ColWidths {
self.CellXPos = append(self.CellXPos, cur)
cur += w
cur += self.Gap
}
}
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