Utku Ozdemir f55f5df739
feat: move dashboard package & run it in tty2
Move dashboard package into a common location where both Talos and talosctl can use it.

Add support for overriding stdin, stdout, stderr and ctt in process runner.

Create a dashboard service which runs the dashboard on /dev/tty2.

Redirect kernel messages to tty1 and switch to tty2 after starting the dashboard on it.

Related to siderolabs/talos#6841, siderolabs/talos#4791.

Signed-off-by: Utku Ozdemir <utku.ozdemir@siderolabs.com>
2023-02-28 12:00:25 +01:00

82 lines
1.9 KiB
Go

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package components
import (
"fmt"
"math"
ui "github.com/gizak/termui/v3"
"github.com/gizak/termui/v3/widgets"
"github.com/siderolabs/talos/internal/pkg/dashboard/data"
)
// SystemGauges quickly show CPU/mem load.
type SystemGauges struct {
ui.Block
cpuGauge *widgets.Gauge
memGauge *widgets.Gauge
}
// NewSystemGauges creates SystemGauges.
func NewSystemGauges() *SystemGauges {
widget := &SystemGauges{
Block: *ui.NewBlock(),
}
widget.cpuGauge = widgets.NewGauge()
widget.cpuGauge.Border = false
widget.cpuGauge.Title = "CPU"
widget.memGauge = widgets.NewGauge()
widget.memGauge.Title = "MEM"
widget.memGauge.Border = false
return widget
}
// Update implements DataWidget interface.
func (widget *SystemGauges) Update(node string, data *data.Data) {
nodeData := data.Nodes[node]
if nodeData == nil {
widget.cpuGauge.Label = noData
widget.cpuGauge.Percent = 0
widget.memGauge.Label = noData
widget.memGauge.Percent = 0
} else {
memUsed := nodeData.MemUsage()
widget.memGauge.Percent = int(math.Round(memUsed * 100.0))
widget.memGauge.Label = fmt.Sprintf("%.1f%%", memUsed*100.0)
cpuUsed := nodeData.CPUUsageByName("usage")
widget.cpuGauge.Percent = int(math.Round(cpuUsed * 100.0))
widget.cpuGauge.Label = fmt.Sprintf("%.1f%%", cpuUsed*100.0)
}
}
// Draw implements io.Drawable.
func (widget *SystemGauges) Draw(buf *ui.Buffer) {
width := widget.Dx()
height := widget.Dy()
y := 0
itemHeight := 2
for _, item := range []ui.Drawable{widget.cpuGauge, widget.memGauge} {
item.SetRect(widget.Min.X, widget.Min.Y+y, widget.Min.X+width, widget.Min.Y+y+itemHeight+1)
item.Draw(buf)
y += itemHeight
if y > height {
break
}
}
}