85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
package widgets
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import (
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"fmt"
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"log"
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"time"
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"github.com/prometheus/client_golang/prometheus"
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"github.com/xxxserxxx/gotop/v3/devices"
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ui "github.com/xxxserxxx/gotop/v3/termui"
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"github.com/xxxserxxx/gotop/v3/utils"
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)
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type MemWidget struct {
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*ui.LineGraph
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updateInterval time.Duration
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metrics map[string]prometheus.Gauge
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}
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func NewMemWidget(updateInterval time.Duration, horizontalScale int) *MemWidget {
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self := &MemWidget{
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LineGraph: ui.NewLineGraph(),
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updateInterval: updateInterval,
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}
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self.Title = " Memory Usage "
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self.HorizontalScale = horizontalScale
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mems := make(map[string]devices.MemoryInfo)
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devices.UpdateMem(mems)
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for name, mem := range mems {
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log.Printf("setting %s to %v", name, mem)
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self.Data[name] = []float64{0}
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self.renderMemInfo(name, mem)
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}
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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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devices.UpdateMem(mems)
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for label, mi := range mems {
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log.Printf(" updating %s to %v", label, mi)
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self.renderMemInfo(label, mi)
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if self.metrics != nil && self.metrics[label] != nil {
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self.metrics[label].Set(mi.UsedPercent)
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}
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}
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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 *MemWidget) EnableMetric() {
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b.metrics = make(map[string]prometheus.Gauge)
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mems := make(map[string]devices.MemoryInfo)
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devices.UpdateMem(mems)
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for l, mem := range mems {
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b.metrics[l] = prometheus.NewGauge(prometheus.GaugeOpts{
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Namespace: "gotop",
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Subsystem: "memory",
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Name: l,
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})
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b.metrics[l].Set(mem.UsedPercent)
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prometheus.MustRegister(b.metrics[l])
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}
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}
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func (b *MemWidget) Scale(i int) {
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b.LineGraph.HorizontalScale = i
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}
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func (self *MemWidget) renderMemInfo(line string, memoryInfo devices.MemoryInfo) {
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self.Data[line] = append(self.Data[line], memoryInfo.UsedPercent)
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memoryTotalBytes, memoryTotalMagnitude := utils.ConvertBytes(memoryInfo.Total)
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memoryUsedBytes, memoryUsedMagnitude := utils.ConvertBytes(memoryInfo.Used)
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self.Labels[line] = fmt.Sprintf("%3.0f%% %5.1f%s/%.0f%s",
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memoryInfo.UsedPercent,
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memoryUsedBytes,
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memoryUsedMagnitude,
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memoryTotalBytes,
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memoryTotalMagnitude,
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)
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}
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