90 lines
1.9 KiB
Go
90 lines
1.9 KiB
Go
package widgets
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import (
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"fmt"
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"log"
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"math"
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"strconv"
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"time"
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"github.com/distatus/battery"
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"github.com/prometheus/client_golang/prometheus"
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ui "github.com/xxxserxxx/gotop/termui"
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)
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type BatteryWidget struct {
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*ui.LineGraph
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updateInterval time.Duration
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metric []prometheus.Gauge
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}
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func NewBatteryWidget(horizontalScale int) *BatteryWidget {
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self := &BatteryWidget{
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LineGraph: ui.NewLineGraph(),
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updateInterval: time.Minute,
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}
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self.Title = " Battery Status "
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self.HorizontalScale = horizontalScale
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// intentional duplicate
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// adds 2 datapoints to the graph, otherwise the dot is difficult to see
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self.update()
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self.update()
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go func() {
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for range time.NewTicker(self.updateInterval).C {
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self.Lock()
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self.update()
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self.Unlock()
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}
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}()
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return self
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}
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func (b *BatteryWidget) EnableMetric() {
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bats, err := battery.GetAll()
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if err != nil {
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log.Printf("error setting up metrics: %v", err)
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return
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}
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b.metric = make([]prometheus.Gauge, len(bats))
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for i, bat := range bats {
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gauge := prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "gotop",
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Subsystem: "battery",
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Name: fmt.Sprintf("%d", i),
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})
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gauge.Set(bat.Current / bat.Full)
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b.metric[i] = gauge
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prometheus.MustRegister(gauge)
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}
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}
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func makeId(i int) string {
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return "Batt" + strconv.Itoa(i)
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}
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func (b *BatteryWidget) Scale(i int) {
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b.LineGraph.HorizontalScale = i
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}
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func (self *BatteryWidget) update() {
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batteries, err := battery.GetAll()
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if err != nil {
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log.Printf("failed to get battery info: %v", err)
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return
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}
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for i, battery := range batteries {
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id := makeId(i)
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perc := battery.Current / battery.Full
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percentFull := math.Abs(perc) * 100.0
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self.Data[id] = append(self.Data[id], percentFull)
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self.Labels[id] = fmt.Sprintf("%3.0f%% %.0f/%.0f", percentFull, math.Abs(battery.Current), math.Abs(battery.Full))
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if self.metric != nil {
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self.metric[i].Set(perc)
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}
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}
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}
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