107 lines
2.3 KiB
Go
107 lines
2.3 KiB
Go
package widgets
|
|
|
|
import (
|
|
"fmt"
|
|
"log"
|
|
"math"
|
|
"strconv"
|
|
"time"
|
|
|
|
"github.com/distatus/battery"
|
|
"github.com/prometheus/client_golang/prometheus"
|
|
|
|
ui "github.com/xxxserxxx/gotop/v3/termui"
|
|
)
|
|
|
|
type BatteryWidget struct {
|
|
*ui.LineGraph
|
|
updateInterval time.Duration
|
|
metric []prometheus.Gauge
|
|
}
|
|
|
|
func NewBatteryWidget(horizontalScale int) *BatteryWidget {
|
|
self := &BatteryWidget{
|
|
LineGraph: ui.NewLineGraph(),
|
|
updateInterval: time.Minute,
|
|
}
|
|
self.Title = " Battery Status "
|
|
self.HorizontalScale = horizontalScale
|
|
|
|
// intentional duplicate
|
|
// adds 2 datapoints to the graph, otherwise the dot is difficult to see
|
|
self.update()
|
|
self.update()
|
|
|
|
go func() {
|
|
for range time.NewTicker(self.updateInterval).C {
|
|
self.Lock()
|
|
self.update()
|
|
self.Unlock()
|
|
}
|
|
}()
|
|
|
|
return self
|
|
}
|
|
|
|
func (b *BatteryWidget) EnableMetric() {
|
|
bats, err := battery.GetAll()
|
|
if err != nil {
|
|
log.Printf("error setting up metrics: %v", err)
|
|
return
|
|
}
|
|
b.metric = make([]prometheus.Gauge, len(bats))
|
|
for i, bat := range bats {
|
|
gauge := prometheus.NewGauge(prometheus.GaugeOpts{
|
|
Namespace: "gotop",
|
|
Subsystem: "battery",
|
|
Name: fmt.Sprintf("%d", i),
|
|
})
|
|
gauge.Set(bat.Current / bat.Full)
|
|
b.metric[i] = gauge
|
|
prometheus.MustRegister(gauge)
|
|
}
|
|
}
|
|
|
|
func makeId(i int) string {
|
|
return "Batt" + strconv.Itoa(i)
|
|
}
|
|
|
|
func (b *BatteryWidget) Scale(i int) {
|
|
b.LineGraph.HorizontalScale = i
|
|
}
|
|
|
|
func (self *BatteryWidget) update() {
|
|
batteries, err := battery.GetAll()
|
|
if err != nil {
|
|
switch errt := err.(type) {
|
|
case battery.ErrFatal:
|
|
log.Printf("fatal error fetching battery info: %v", err)
|
|
return
|
|
case battery.Errors:
|
|
batts := make([]*battery.Battery, 0)
|
|
for i, e := range errt {
|
|
if e == nil {
|
|
batts = append(batts, batteries[i])
|
|
} else {
|
|
log.Printf("recoverable error fetching battery info; skipping battery: %v", e)
|
|
}
|
|
}
|
|
if len(batts) < 1 {
|
|
log.Print("no usable batteries found")
|
|
return
|
|
}
|
|
batteries = batts
|
|
}
|
|
}
|
|
for i, battery := range batteries {
|
|
id := makeId(i)
|
|
perc := battery.Current / battery.Full
|
|
percentFull := math.Abs(perc) * 100.0
|
|
self.Data[id] = append(self.Data[id], percentFull)
|
|
self.Labels[id] = fmt.Sprintf("%3.0f%% %.0f/%.0f", percentFull, math.Abs(battery.Current), math.Abs(battery.Full))
|
|
if self.metric != nil {
|
|
self.metric[i].Set(perc)
|
|
}
|
|
}
|
|
}
|