mirror of
https://github.com/divan/expvarmon.git
synced 2025-05-01 13:48:50 +08:00
131 lines
3.1 KiB
Go
131 lines
3.1 KiB
Go
package main
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import (
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"fmt"
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"log"
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"github.com/divan/termui"
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)
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// TermUI is a termUI implementation of UI interface.
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type TermUI struct {
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Title *termui.Par
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Status *termui.Par
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Services *termui.List
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Values map[string]*termui.List
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MemSparkline *termui.Sparklines
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}
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func (t *TermUI) Init(data UIData) {
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err := termui.Init()
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if err != nil {
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log.Fatal(err)
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}
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t.Values = make(map[string]*termui.List)
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termui.UseTheme("helloworld")
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t.Title = func() *termui.Par {
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p := termui.NewPar("")
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p.Height = 3
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p.TextFgColor = termui.ColorWhite
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p.Border.Label = "Services Monitor"
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p.Border.FgColor = termui.ColorCyan
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return p
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}()
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t.Status = func() *termui.Par {
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p := termui.NewPar("")
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p.Height = 3
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p.TextFgColor = termui.ColorWhite
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p.Border.Label = "Status"
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p.Border.FgColor = termui.ColorCyan
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return p
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}()
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t.Services = func() *termui.List {
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list := termui.NewList()
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list.ItemFgColor = termui.ColorGreen
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list.Border.Label = "Services"
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list.Height = len(data.Services) + 2
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return list
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}()
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for _, name := range data.Vars {
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_, ok := t.Values[name]
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if !ok {
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list := termui.NewList()
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list.ItemFgColor = termui.ColorBlue | termui.AttrBold
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list.Border.Label = name
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list.Height = len(data.Services) + 2
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t.Values[name] = list
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}
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}
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t.MemSparkline = func() *termui.Sparklines {
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var sparklines []termui.Sparkline
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for _, service := range data.Services {
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spl := termui.NewSparkline()
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spl.Height = 1
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spl.LineColor = termui.ColorGreen
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spl.Title = service.Name
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sparklines = append(sparklines, spl)
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}
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s := termui.NewSparklines(sparklines...)
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s.Height = 2*len(data.Services) + 2
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s.HasBorder = true
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s.Border.Label = "Memory Track"
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return s
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}()
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col := termui.NewCol(2, 0, t.Services)
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col1 := termui.NewCol(3, 0, t.Values[data.Vars[0]])
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col2 := termui.NewCol(3, 0, t.Values[data.Vars[1]])
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col3 := termui.NewCol(2, 0, t.Values[data.Vars[2]])
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col4 := termui.NewCol(2, 0, t.Values[data.Vars[3]])
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valuesRow := termui.NewRow(col, col1, col2, col3, col4)
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termui.Body.AddRows(
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termui.NewRow(
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termui.NewCol(6, 0, t.Title),
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termui.NewCol(6, 0, t.Status)),
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valuesRow,
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termui.NewRow(
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termui.NewCol(12, 0, t.MemSparkline)),
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)
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termui.Body.Align()
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}
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func (t *TermUI) Update(data UIData) {
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t.Title.Text = fmt.Sprintf("monitoring %d services, press q to quit", len(data.Services))
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t.Status.Text = fmt.Sprintf("Last update: %v", data.LastTimestamp.Format("15:04:05 02/Jan/06"))
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var services []string
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for _, service := range data.Services {
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services = append(services, service.StatusLine())
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}
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t.Services.Items = services
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for _, name := range data.Vars {
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var lines []string
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for _, service := range data.Services {
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lines = append(lines, service.Value(name))
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}
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t.Values[name].Items = lines
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}
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// Sparklines
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for i, service := range data.Services {
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t.MemSparkline.Lines[i].Title = service.Name
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t.MemSparkline.Lines[i].Data = service.Values("memstats.Alloc")
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}
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termui.Body.Width = termui.TermWidth()
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termui.Body.Align()
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termui.Render(termui.Body)
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}
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func (t *TermUI) Close() {
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termui.Close()
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}
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