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package widgets
import (
"fmt"
"time"
"github.com/prometheus/client_golang/prometheus"
"github.com/xxxserxxx/gotop/v4/devices"
ui "github.com/xxxserxxx/gotop/v4/termui"
"github.com/xxxserxxx/gotop/v4/utils"
)
type MemWidget struct {
*ui.LineGraph
updateInterval time.Duration
metrics map[string]prometheus.Gauge
}
func NewMemWidget(updateInterval time.Duration, horizontalScale int) *MemWidget {
self := &MemWidget{
LineGraph: ui.NewLineGraph(),
updateInterval: updateInterval,
}
self.Title = " Memory Usage "
self.HorizontalScale = horizontalScale
mems := make(map[string]devices.MemoryInfo)
devices.UpdateMem(mems)
for name, mem := range mems {
self.Data[name] = []float64{0}
self.renderMemInfo(name, mem)
}
go func() {
for range time.NewTicker(self.updateInterval).C {
self.Lock()
devices.UpdateMem(mems)
for label, mi := range mems {
self.renderMemInfo(label, mi)
if self.metrics != nil && self.metrics[label] != nil {
self.metrics[label].Set(mi.UsedPercent)
}
}
self.Unlock()
}
}()
return self
}
func (mem *MemWidget) EnableMetric() {
mem.metrics = make(map[string]prometheus.Gauge)
mems := make(map[string]devices.MemoryInfo)
devices.UpdateMem(mems)
for l, m := range mems {
mem.metrics[l] = prometheus.NewGauge(prometheus.GaugeOpts{
Namespace: "gotop",
Subsystem: "memory",
Name: l,
})
mem.metrics[l].Set(m.UsedPercent)
prometheus.MustRegister(mem.metrics[l])
}
}
func (mem *MemWidget) Scale(i int) {
mem.LineGraph.HorizontalScale = i
}
func (mem *MemWidget) renderMemInfo(line string, memoryInfo devices.MemoryInfo) {
mem.Data[line] = append(mem.Data[line], memoryInfo.UsedPercent)
memoryTotalBytes, memoryTotalMagnitude := utils.ConvertBytes(memoryInfo.Total)
memoryUsedBytes, memoryUsedMagnitude := utils.ConvertBytes(memoryInfo.Used)
mem.Labels[line] = fmt.Sprintf("%3.0f%% %5.1f%s/%.0f%s",
memoryInfo.UsedPercent,
memoryUsedBytes,
memoryUsedMagnitude,
memoryTotalBytes,
memoryTotalMagnitude,
)
}
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