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package widgets
import (
"fmt"
"time"
ui "github.com/cjbassi/gotop/termui"
"github.com/cjbassi/gotop/utils"
ps "github.com/shirou/gopsutil/net"
)
type Net struct {
*ui.Sparklines
interval time.Duration
recvTotal uint64
sentTotal uint64
}
func NewNet() *Net {
recv := ui.NewSparkline()
recv.Data = []int{0}
sent := ui.NewSparkline()
sent.Data = []int{0}
spark := ui.NewSparklines(recv, sent)
n := &Net{spark, time.Second, 0, 0}
n.Label = "Network Usage"
go n.update()
ticker := time.NewTicker(n.interval)
go func() {
for range ticker.C {
n.update()
}
}()
return n
}
func (n *Net) update() {
interfaces, _ := ps.IOCounters(false)
recv := interfaces[0].BytesRecv
sent := interfaces[0].BytesSent
if n.recvTotal != 0 { // if this isn't the first update
curRecv := recv - n.recvTotal
curSent := sent - n.sentTotal
n.Lines[0].Data = append(n.Lines[0].Data, int(curRecv))
n.Lines[1].Data = append(n.Lines[1].Data, int(curSent))
}
n.recvTotal = recv
n.sentTotal = sent
for i := 0; i < 2; i++ {
var method string
var total uint64
cur := n.Lines[i].Data[len(n.Lines[i].Data)-1]
totalUnit := "B"
curUnit := "B"
if i == 0 {
total = n.recvTotal
method = "Rx"
} else {
total = n.sentTotal
method = "Tx"
}
if cur >= 1000000 {
cur = int(utils.BytesToMB(uint64(cur)))
curUnit = "MB"
} else if cur >= 1000 {
cur = int(utils.BytesToKB(uint64(cur)))
curUnit = "kB"
}
if total >= 1000000000 {
total = utils.BytesToGB(total)
totalUnit = "GB"
} else if total >= 1000000 {
total = utils.BytesToMB(total)
totalUnit = "MB"
}
n.Lines[i].Title1 = fmt.Sprintf(" Total %s: %3d %s", method, total, totalUnit)
n.Lines[i].Title2 = fmt.Sprintf(" %s/s: %7d %2s/s", method, cur, curUnit)
}
}
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