legend refactoring
This commit is contained in:
sqshq
parent
aa24aa4bd9
commit
ae6e895d8a
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@ -8,7 +8,7 @@ runcharts:
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script: curl -o /dev/null -s -w '%{time_total}' https://search.yahoo.com/
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- label: BING
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script: curl -o /dev/null -s -w '%{time_total}' https://www.bing.com/
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refresh-rate-ms: 200
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refresh-rate-ms: 500
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decimal-places: 3
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alert:
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value:
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@ -1,7 +1,6 @@
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package config
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import (
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"fmt"
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"github.com/sqshq/sampler/console"
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"github.com/sqshq/sampler/data"
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. "github.com/sqshq/sampler/widgets"
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@ -17,22 +16,28 @@ type Config struct {
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}
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type RunChartConfig struct {
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Title string `yaml:"title"`
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Items []data.Item `yaml:"items"`
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Position Position `yaml:"position"`
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Size Size `yaml:"size"`
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RefreshRateMs int `yaml:"refresh-rate-ms"`
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Precision int `yaml:"decimal-places"`
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Title string `yaml:"title"`
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Items []data.Item `yaml:"items"`
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Position Position `yaml:"position"`
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Size Size `yaml:"size"`
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RefreshRateMs int `yaml:"refresh-rate-ms"`
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Precision int `yaml:"decimal-places"`
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Legend LegendConfig `yaml:"legend"`
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}
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func Load(args []string) *Config {
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type LegendConfig struct {
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Enabled bool `yaml:"enabled"`
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Details bool `yaml:"details"`
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}
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if len(args) < 2 {
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fmt.Fprintf(os.Stderr, "Please specify config file location. See www.github.com/sqshq/sampler for the reference\n")
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func Load() *Config {
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if len(os.Args) < 2 {
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println("Please specify config file location. See www.github.com/sqshq/sampler for the reference")
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os.Exit(0)
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}
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cfg := readFile(args[1])
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cfg := readFile(os.Args[1])
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cfg.validate()
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cfg.setDefaultValues()
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cfg.setDefaultColors()
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7
main.go
7
main.go
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@ -6,14 +6,14 @@ import (
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"github.com/sqshq/sampler/data"
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"github.com/sqshq/sampler/event"
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"github.com/sqshq/sampler/widgets"
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"github.com/sqshq/sampler/widgets/runchart"
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ui "github.com/sqshq/termui"
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"os"
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"time"
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)
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func main() {
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cfg := config.Load(os.Args)
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cfg := config.Load()
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csl := console.Console{}
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csl.Init()
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defer csl.Close()
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@ -23,7 +23,8 @@ func main() {
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for _, c := range cfg.RunCharts {
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chart := widgets.NewRunChart(c.Title, c.Precision, c.RefreshRateMs)
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legend := runchart.Legend{Enabled: c.Legend.Enabled, Details: c.Legend.Details}
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chart := runchart.NewRunChart(c.Title, c.Precision, c.RefreshRateMs, legend)
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layout.AddComponent(chart, c.Title, c.Position, c.Size, widgets.TypeRunChart)
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for _, item := range c.Items {
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@ -1,18 +0,0 @@
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package widgets
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import (
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"image"
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)
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const (
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xBrailleMultiplier = 2
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yBrailleMultiplier = 4
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)
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func braillePoint(point image.Point) image.Point {
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return image.Point{X: point.X * xBrailleMultiplier, Y: point.Y * yBrailleMultiplier}
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}
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func debraillePoint(point image.Point) image.Point {
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return image.Point{X: point.X / xBrailleMultiplier, Y: point.Y / yBrailleMultiplier}
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}
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@ -2,6 +2,7 @@ package widgets
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import (
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"github.com/sqshq/sampler/console"
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"github.com/sqshq/sampler/widgets/runchart"
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ui "github.com/sqshq/termui"
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)
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@ -79,7 +80,7 @@ func (l *Layout) HandleConsoleEvent(e string) {
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case MenuOptionPinpoint:
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l.mode = ModeChartPinpoint
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l.menu.idle()
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chart := l.getSelectedComponent().Drawable.(*RunChart)
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chart := l.getSelectedComponent().Drawable.(*runchart.RunChart)
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chart.MoveSelection(0)
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case MenuOptionResume:
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l.mode = ModeDefault
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@ -94,7 +95,7 @@ func (l *Layout) HandleConsoleEvent(e string) {
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case console.KeyEsc:
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switch l.mode {
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case ModeChartPinpoint:
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chart := l.getSelectedComponent().Drawable.(*RunChart)
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chart := l.getSelectedComponent().Drawable.(*runchart.RunChart)
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chart.DisableSelection()
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fallthrough
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case ModeComponentSelect:
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@ -110,7 +111,7 @@ func (l *Layout) HandleConsoleEvent(e string) {
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l.selection = 0
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l.menu.highlight(l.getComponent(l.selection))
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case ModeChartPinpoint:
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chart := l.getSelectedComponent().Drawable.(*RunChart)
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chart := l.getSelectedComponent().Drawable.(*runchart.RunChart)
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chart.MoveSelection(-1)
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case ModeComponentSelect:
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if l.selection > 0 {
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@ -129,7 +130,7 @@ func (l *Layout) HandleConsoleEvent(e string) {
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l.selection = 0
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l.menu.highlight(l.getComponent(l.selection))
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case ModeChartPinpoint:
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chart := l.getSelectedComponent().Drawable.(*RunChart)
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chart := l.getSelectedComponent().Drawable.(*runchart.RunChart)
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chart.MoveSelection(1)
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case ModeComponentSelect:
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if l.selection < len(l.components)-1 {
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@ -1,511 +0,0 @@
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package widgets
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import (
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"fmt"
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"github.com/sqshq/sampler/console"
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"github.com/sqshq/sampler/data"
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"image"
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"math"
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"strconv"
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"sync"
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"time"
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ui "github.com/sqshq/termui"
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)
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// TODO split into runchart, grid, legend files
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const (
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xAxisLegendWidth = 20
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xAxisLabelsHeight = 1
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xAxisLabelsWidth = 8
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xAxisLabelsGap = 2
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xAxisGridWidth = xAxisLabelsGap + xAxisLabelsWidth
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yAxisLabelsHeight = 1
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yAxisLabelsGap = 1
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historyReserveHrs = 1
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)
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type ScrollMode int
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const (
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Auto ScrollMode = 0
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Manual ScrollMode = 1
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)
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type RunChart struct {
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ui.Block
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lines []TimeLine
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grid ChartGrid
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timescale time.Duration
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mutex *sync.Mutex
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scrollMode ScrollMode
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selection time.Time
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precision int
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}
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type ChartGrid struct {
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timeRange TimeRange
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timePerPoint time.Duration
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valueExtrema ValueExtrema
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linesCount int
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maxTimeWidth int
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minTimeWidth int
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}
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type TimePoint struct {
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value float64
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time time.Time
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coordinate int
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}
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type TimeLine struct {
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points []TimePoint
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color ui.Color
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label string
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selection int
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}
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type TimeRange struct {
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max time.Time
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min time.Time
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}
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type ValueExtrema struct {
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max float64
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min float64
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}
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func NewRunChart(title string, precision int, refreshRateMs int) *RunChart {
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block := *ui.NewBlock()
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block.Title = title
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return &RunChart{
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Block: block,
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lines: []TimeLine{},
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timescale: calculateTimescale(refreshRateMs),
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mutex: &sync.Mutex{},
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precision: precision,
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scrollMode: Auto,
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}
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}
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func (self *RunChart) newChartGrid() ChartGrid {
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linesCount := (self.Inner.Max.X - self.Inner.Min.X - self.grid.minTimeWidth) / xAxisGridWidth
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timeRange := self.getTimeRange(linesCount)
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return ChartGrid{
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timeRange: timeRange,
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timePerPoint: self.timescale / time.Duration(xAxisGridWidth),
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valueExtrema: getValueExtrema(self.lines, timeRange),
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linesCount: linesCount,
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maxTimeWidth: self.Inner.Max.X,
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minTimeWidth: self.getMaxValueLength(),
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}
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}
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func (self *RunChart) newTimePoint(value float64) TimePoint {
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now := time.Now()
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return TimePoint{
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value: value,
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time: now,
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coordinate: self.calculateTimeCoordinate(now),
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}
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}
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func (self *RunChart) Draw(buffer *ui.Buffer) {
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self.mutex.Lock()
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self.Block.Draw(buffer)
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self.grid = self.newChartGrid()
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drawArea := image.Rect(
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self.Inner.Min.X+self.grid.minTimeWidth+1, self.Inner.Min.Y,
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self.Inner.Max.X, self.Inner.Max.Y-xAxisLabelsHeight-1,
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)
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self.renderAxes(buffer)
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self.renderLines(buffer, drawArea)
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self.renderLegend(buffer, drawArea)
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self.mutex.Unlock()
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}
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func (self *RunChart) ConsumeSample(sample data.Sample) {
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float, err := strconv.ParseFloat(sample.Value, 64)
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if err != nil {
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// TODO visual notification + check sample.Error
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}
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self.mutex.Lock()
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lineIndex := -1
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for i, line := range self.lines {
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if line.label == sample.Label {
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lineIndex = i
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}
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}
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if lineIndex == -1 {
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line := &TimeLine{
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points: []TimePoint{},
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color: sample.Color,
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label: sample.Label,
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}
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self.lines = append(self.lines, *line)
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lineIndex = len(self.lines) - 1
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}
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line := self.lines[lineIndex]
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timePoint := self.newTimePoint(float)
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line.points = append(line.points, timePoint)
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self.lines[lineIndex] = line
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self.trimOutOfRangeValues()
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self.mutex.Unlock()
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}
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func (self *RunChart) renderLines(buffer *ui.Buffer, drawArea image.Rectangle) {
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canvas := ui.NewCanvas()
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canvas.Rectangle = drawArea
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if len(self.lines) == 0 || len(self.lines[0].points) == 0 {
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return
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}
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selectionCoordinate := self.calculateTimeCoordinate(self.selection)
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selectionPoints := make(map[int]image.Point)
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probe := self.lines[0].points[0]
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delta := ui.AbsInt(self.calculateTimeCoordinate(probe.time) - probe.coordinate)
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for i, line := range self.lines {
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xPoint := make(map[int]image.Point)
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xOrder := make([]int, 0)
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if line.selection != 0 {
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line.selection -= delta
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self.lines[i].selection = line.selection
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}
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for j, timePoint := range line.points {
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timePoint.coordinate -= delta
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line.points[j] = timePoint
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var y int
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if self.grid.valueExtrema.max == self.grid.valueExtrema.min {
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y = (drawArea.Dy() - 2) / 2
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} else {
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valuePerY := (self.grid.valueExtrema.max - self.grid.valueExtrema.min) / float64(drawArea.Dy()-2)
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y = int(float64(timePoint.value-self.grid.valueExtrema.min) / valuePerY)
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}
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point := image.Pt(timePoint.coordinate, drawArea.Max.Y-y-1)
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if _, exists := xPoint[point.X]; exists {
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continue
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}
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if !point.In(drawArea) {
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continue
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}
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if line.selection == 0 {
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if len(line.points) > j+1 && ui.AbsInt(timePoint.coordinate-selectionCoordinate) > ui.AbsInt(line.points[j+1].coordinate-selectionCoordinate) {
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selectionPoints[i] = point
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}
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} else {
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if timePoint.coordinate == line.selection {
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selectionPoints[i] = point
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}
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}
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xPoint[point.X] = point
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xOrder = append(xOrder, point.X)
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}
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for i, x := range xOrder {
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currentPoint := xPoint[x]
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var previousPoint image.Point
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if i == 0 {
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previousPoint = currentPoint
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} else {
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previousPoint = xPoint[xOrder[i-1]]
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}
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canvas.Line(
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braillePoint(previousPoint),
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braillePoint(currentPoint),
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line.color,
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)
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}
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}
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canvas.Draw(buffer)
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if self.scrollMode == Manual {
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for lineIndex, point := range selectionPoints {
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buffer.SetCell(ui.NewCell(console.SymbolSelection, ui.NewStyle(self.lines[lineIndex].color)), point)
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if self.lines[lineIndex].selection == 0 {
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self.lines[lineIndex].selection = point.X
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}
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}
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}
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}
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func (self *RunChart) renderAxes(buffer *ui.Buffer) {
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// draw origin cell
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buffer.SetCell(
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ui.NewCell(ui.BOTTOM_LEFT, ui.NewStyle(ui.ColorWhite)),
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image.Pt(self.Inner.Min.X+self.grid.minTimeWidth, self.Inner.Max.Y-xAxisLabelsHeight-1),
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)
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// draw x axis line
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for i := self.grid.minTimeWidth + 1; i < self.Inner.Dx(); i++ {
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buffer.SetCell(
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ui.NewCell(ui.HORIZONTAL_DASH, ui.NewStyle(ui.ColorWhite)),
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image.Pt(i+self.Inner.Min.X, self.Inner.Max.Y-xAxisLabelsHeight-1),
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)
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}
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// draw grid lines
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for y := 0; y < self.Inner.Dy()-xAxisLabelsHeight-2; y = y + 2 {
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for x := 1; x <= self.grid.linesCount; x++ {
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buffer.SetCell(
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ui.NewCell(ui.VERTICAL_DASH, ui.NewStyle(console.ColorDarkGrey)),
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image.Pt(self.grid.maxTimeWidth-x*xAxisGridWidth, y+self.Inner.Min.Y+1),
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)
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}
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}
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// draw y axis line
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for i := 0; i < self.Inner.Dy()-xAxisLabelsHeight-1; i++ {
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buffer.SetCell(
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ui.NewCell(ui.VERTICAL_DASH, ui.NewStyle(ui.ColorWhite)),
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image.Pt(self.Inner.Min.X+self.grid.minTimeWidth, i+self.Inner.Min.Y),
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)
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}
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// draw x axis time labels
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for i := 1; i <= self.grid.linesCount; i++ {
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labelTime := self.grid.timeRange.max.Add(time.Duration(-i) * self.timescale)
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buffer.SetString(
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labelTime.Format("15:04:05"),
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ui.NewStyle(ui.ColorWhite),
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image.Pt(self.grid.maxTimeWidth-xAxisLabelsWidth/2-i*(xAxisGridWidth), self.Inner.Max.Y-1),
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)
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}
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// draw y axis labels
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if self.grid.valueExtrema.max != self.grid.valueExtrema.min {
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labelsCount := (self.Inner.Dy() - xAxisLabelsHeight - 1) / (yAxisLabelsGap + yAxisLabelsHeight)
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valuePerY := (self.grid.valueExtrema.max - self.grid.valueExtrema.min) / float64(self.Inner.Dy()-xAxisLabelsHeight-3)
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for i := 0; i < int(labelsCount); i++ {
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value := self.grid.valueExtrema.max - (valuePerY * float64(i) * (yAxisLabelsGap + yAxisLabelsHeight))
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buffer.SetString(
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formatValue(value, self.precision),
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ui.NewStyle(ui.ColorWhite),
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image.Pt(self.Inner.Min.X, 1+self.Inner.Min.Y+i*(yAxisLabelsGap+yAxisLabelsHeight)),
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)
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}
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} else {
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buffer.SetString(
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formatValue(self.grid.valueExtrema.max, self.precision),
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ui.NewStyle(ui.ColorWhite),
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image.Pt(self.Inner.Min.X, self.Inner.Min.Y+self.Inner.Dy()/2))
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}
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}
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func (self *RunChart) renderLegend(buffer *ui.Buffer, rectangle image.Rectangle) {
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for i, line := range self.lines {
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extremum := getLineValueExtremum(line.points)
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buffer.SetString(
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string(ui.DOT),
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ui.NewStyle(line.color),
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image.Pt(self.Inner.Max.X-xAxisLegendWidth-2, self.Inner.Min.Y+1+i*5),
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)
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buffer.SetString(
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fmt.Sprintf("%s", line.label),
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ui.NewStyle(line.color),
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||||
image.Pt(self.Inner.Max.X-xAxisLegendWidth, self.Inner.Min.Y+1+i*5),
|
||||
)
|
||||
buffer.SetString(
|
||||
fmt.Sprintf("cur %s", formatValue(line.points[len(line.points)-1].value, self.precision)),
|
||||
ui.NewStyle(ui.ColorWhite),
|
||||
image.Pt(self.Inner.Max.X-xAxisLegendWidth, self.Inner.Min.Y+2+i*5),
|
||||
)
|
||||
buffer.SetString(
|
||||
fmt.Sprintf("max %s", formatValue(extremum.max, self.precision)),
|
||||
ui.NewStyle(ui.ColorWhite),
|
||||
image.Pt(self.Inner.Max.X-xAxisLegendWidth, self.Inner.Min.Y+3+i*5),
|
||||
)
|
||||
buffer.SetString(
|
||||
fmt.Sprintf("min %s", formatValue(extremum.min, self.precision)),
|
||||
ui.NewStyle(ui.ColorWhite),
|
||||
image.Pt(self.Inner.Max.X-xAxisLegendWidth, self.Inner.Min.Y+4+i*5),
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
func (self *RunChart) trimOutOfRangeValues() {
|
||||
|
||||
minRangeTime := self.grid.timeRange.min.Add(-time.Hour * time.Duration(historyReserveHrs))
|
||||
|
||||
for i, item := range self.lines {
|
||||
lastOutOfRangeValueIndex := -1
|
||||
|
||||
for j, point := range item.points {
|
||||
if point.time.Before(minRangeTime) {
|
||||
lastOutOfRangeValueIndex = j
|
||||
}
|
||||
}
|
||||
|
||||
if lastOutOfRangeValueIndex > 0 {
|
||||
item.points = append(item.points[:0], item.points[lastOutOfRangeValueIndex+1:]...)
|
||||
self.lines[i] = item
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (self *RunChart) calculateTimeCoordinate(t time.Time) int {
|
||||
timeDeltaWithGridMaxTime := self.grid.timeRange.max.Sub(t).Nanoseconds()
|
||||
timeDeltaToPaddingRelation := float64(timeDeltaWithGridMaxTime) / float64(self.timescale.Nanoseconds())
|
||||
return self.grid.maxTimeWidth - int(math.Ceil(float64(xAxisGridWidth)*timeDeltaToPaddingRelation))
|
||||
}
|
||||
|
||||
func (self *RunChart) getMaxValueLength() int {
|
||||
|
||||
maxValueLength := 0
|
||||
|
||||
for _, line := range self.lines {
|
||||
for _, point := range line.points {
|
||||
l := len(formatValue(point.value, self.precision))
|
||||
if l > maxValueLength {
|
||||
maxValueLength = l
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return maxValueLength
|
||||
}
|
||||
|
||||
func (self *RunChart) MoveSelection(shift int) {
|
||||
|
||||
if self.scrollMode == Auto {
|
||||
self.scrollMode = Manual
|
||||
self.selection = getMidRangeTime(self.grid.timeRange)
|
||||
return
|
||||
} else {
|
||||
self.selection = self.selection.Add(self.grid.timePerPoint * time.Duration(shift))
|
||||
if self.selection.After(self.grid.timeRange.max) {
|
||||
self.selection = self.grid.timeRange.max
|
||||
} else if self.selection.Before(self.grid.timeRange.min) {
|
||||
self.selection = self.grid.timeRange.min
|
||||
}
|
||||
}
|
||||
|
||||
for i := range self.lines {
|
||||
self.lines[i].selection = 0
|
||||
}
|
||||
}
|
||||
|
||||
func (self *RunChart) DisableSelection() {
|
||||
if self.scrollMode == Manual {
|
||||
self.scrollMode = Auto
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func getMidRangeTime(r TimeRange) time.Time {
|
||||
delta := r.max.Sub(r.min)
|
||||
return r.max.Add(-delta / 2)
|
||||
}
|
||||
|
||||
func formatValue(value float64, precision int) string {
|
||||
format := "%." + strconv.Itoa(precision) + "f"
|
||||
return fmt.Sprintf(format, value)
|
||||
}
|
||||
|
||||
func getValueExtrema(items []TimeLine, timeRange TimeRange) ValueExtrema {
|
||||
|
||||
if len(items) == 0 {
|
||||
return ValueExtrema{0, 0}
|
||||
}
|
||||
|
||||
var max, min = -math.MaxFloat64, math.MaxFloat64
|
||||
|
||||
for _, item := range items {
|
||||
for _, point := range item.points {
|
||||
if point.value > max && timeRange.isInRange(point.time) {
|
||||
max = point.value
|
||||
}
|
||||
if point.value < min && timeRange.isInRange(point.time) {
|
||||
min = point.value
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return ValueExtrema{max: max, min: min}
|
||||
}
|
||||
|
||||
func (r *TimeRange) isInRange(time time.Time) bool {
|
||||
return time.After(r.min) && time.Before(r.max)
|
||||
}
|
||||
|
||||
func getLineValueExtremum(points []TimePoint) ValueExtrema {
|
||||
|
||||
if len(points) == 0 {
|
||||
return ValueExtrema{0, 0}
|
||||
}
|
||||
|
||||
var max, min = -math.MaxFloat64, math.MaxFloat64
|
||||
|
||||
for _, point := range points {
|
||||
if point.value > max {
|
||||
max = point.value
|
||||
}
|
||||
if point.value < min {
|
||||
min = point.value
|
||||
}
|
||||
}
|
||||
|
||||
return ValueExtrema{max: max, min: min}
|
||||
}
|
||||
|
||||
func (self *RunChart) getTimeRange(linesCount int) TimeRange {
|
||||
|
||||
if self.scrollMode == Manual {
|
||||
return self.grid.timeRange
|
||||
}
|
||||
|
||||
width := time.Duration(self.timescale.Nanoseconds() * int64(linesCount))
|
||||
max := time.Now()
|
||||
|
||||
return TimeRange{
|
||||
max: max,
|
||||
min: max.Add(-width),
|
||||
}
|
||||
}
|
||||
|
||||
// time duration between grid lines
|
||||
func calculateTimescale(refreshRateMs int) time.Duration {
|
||||
|
||||
multiplier := refreshRateMs * xAxisGridWidth / 2
|
||||
timescale := time.Duration(time.Millisecond * time.Duration(multiplier)).Round(time.Second)
|
||||
|
||||
if timescale.Seconds() == 0 {
|
||||
return time.Second
|
||||
} else {
|
||||
return timescale
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,144 @@
|
|||
package runchart
|
||||
|
||||
import (
|
||||
"github.com/sqshq/sampler/console"
|
||||
ui "github.com/sqshq/termui"
|
||||
"image"
|
||||
"math"
|
||||
"time"
|
||||
)
|
||||
|
||||
type ChartGrid struct {
|
||||
timeRange TimeRange
|
||||
timePerPoint time.Duration
|
||||
valueExtrema ValueExtrema
|
||||
linesCount int
|
||||
maxTimeWidth int
|
||||
minTimeWidth int
|
||||
}
|
||||
|
||||
func (c *RunChart) newChartGrid() ChartGrid {
|
||||
|
||||
linesCount := (c.Inner.Max.X - c.Inner.Min.X - c.grid.minTimeWidth) / xAxisGridWidth
|
||||
timeRange := c.getTimeRange(linesCount)
|
||||
|
||||
return ChartGrid{
|
||||
timeRange: timeRange,
|
||||
timePerPoint: c.timescale / time.Duration(xAxisGridWidth),
|
||||
valueExtrema: getLocalExtrema(c.lines, timeRange),
|
||||
linesCount: linesCount,
|
||||
maxTimeWidth: c.Inner.Max.X,
|
||||
minTimeWidth: c.getMaxValueLength(),
|
||||
}
|
||||
}
|
||||
|
||||
func (c *RunChart) renderAxes(buffer *ui.Buffer) {
|
||||
// draw origin cell
|
||||
buffer.SetCell(
|
||||
ui.NewCell(ui.BOTTOM_LEFT, ui.NewStyle(ui.ColorWhite)),
|
||||
image.Pt(c.Inner.Min.X+c.grid.minTimeWidth, c.Inner.Max.Y-xAxisLabelsHeight-1),
|
||||
)
|
||||
|
||||
// draw x axis line
|
||||
for i := c.grid.minTimeWidth + 1; i < c.Inner.Dx(); i++ {
|
||||
buffer.SetCell(
|
||||
ui.NewCell(ui.HORIZONTAL_DASH, ui.NewStyle(ui.ColorWhite)),
|
||||
image.Pt(i+c.Inner.Min.X, c.Inner.Max.Y-xAxisLabelsHeight-1),
|
||||
)
|
||||
}
|
||||
|
||||
// draw grid lines
|
||||
for y := 0; y < c.Inner.Dy()-xAxisLabelsHeight-2; y = y + 2 {
|
||||
for x := 1; x <= c.grid.linesCount; x++ {
|
||||
buffer.SetCell(
|
||||
ui.NewCell(ui.VERTICAL_DASH, ui.NewStyle(console.ColorDarkGrey)),
|
||||
image.Pt(c.grid.maxTimeWidth-x*xAxisGridWidth, y+c.Inner.Min.Y+1),
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
// draw y axis line
|
||||
for i := 0; i < c.Inner.Dy()-xAxisLabelsHeight-1; i++ {
|
||||
buffer.SetCell(
|
||||
ui.NewCell(ui.VERTICAL_DASH, ui.NewStyle(ui.ColorWhite)),
|
||||
image.Pt(c.Inner.Min.X+c.grid.minTimeWidth, i+c.Inner.Min.Y),
|
||||
)
|
||||
}
|
||||
|
||||
// draw x axis time labels
|
||||
for i := 1; i <= c.grid.linesCount; i++ {
|
||||
labelTime := c.grid.timeRange.max.Add(time.Duration(-i) * c.timescale)
|
||||
buffer.SetString(
|
||||
labelTime.Format("15:04:05"),
|
||||
ui.NewStyle(ui.ColorWhite),
|
||||
image.Pt(c.grid.maxTimeWidth-xAxisLabelsWidth/2-i*(xAxisGridWidth), c.Inner.Max.Y-1),
|
||||
)
|
||||
}
|
||||
|
||||
// draw y axis labels
|
||||
if c.grid.valueExtrema.max != c.grid.valueExtrema.min {
|
||||
labelsCount := (c.Inner.Dy() - xAxisLabelsHeight - 1) / (yAxisLabelsIndent + yAxisLabelsHeight)
|
||||
valuePerY := (c.grid.valueExtrema.max - c.grid.valueExtrema.min) / float64(c.Inner.Dy()-xAxisLabelsHeight-3)
|
||||
for i := 0; i < int(labelsCount); i++ {
|
||||
value := c.grid.valueExtrema.max - (valuePerY * float64(i) * (yAxisLabelsIndent + yAxisLabelsHeight))
|
||||
buffer.SetString(
|
||||
formatValue(value, c.precision),
|
||||
ui.NewStyle(ui.ColorWhite),
|
||||
image.Pt(c.Inner.Min.X, 1+c.Inner.Min.Y+i*(yAxisLabelsIndent+yAxisLabelsHeight)),
|
||||
)
|
||||
}
|
||||
} else {
|
||||
buffer.SetString(
|
||||
formatValue(c.grid.valueExtrema.max, c.precision),
|
||||
ui.NewStyle(ui.ColorWhite),
|
||||
image.Pt(c.Inner.Min.X, c.Inner.Min.Y+c.Inner.Dy()/2))
|
||||
}
|
||||
}
|
||||
|
||||
func (c *RunChart) getTimeRange(linesCount int) TimeRange {
|
||||
|
||||
if c.mode == Pinpoint {
|
||||
return c.grid.timeRange
|
||||
}
|
||||
|
||||
width := time.Duration(c.timescale.Nanoseconds() * int64(linesCount))
|
||||
max := time.Now()
|
||||
|
||||
return TimeRange{
|
||||
max: max,
|
||||
min: max.Add(-width),
|
||||
}
|
||||
}
|
||||
|
||||
func getLocalExtrema(items []TimeLine, timeRange TimeRange) ValueExtrema {
|
||||
|
||||
if len(items) == 0 {
|
||||
return ValueExtrema{0, 0}
|
||||
}
|
||||
|
||||
var max, min = -math.MaxFloat64, math.MaxFloat64
|
||||
|
||||
for _, item := range items {
|
||||
started := false
|
||||
for i := len(item.points) - 1; i > 0; i-- {
|
||||
point := item.points[i]
|
||||
if timeRange.isInRange(point.time) {
|
||||
started = true
|
||||
} else if started == true && !timeRange.isInRange(point.time) {
|
||||
break
|
||||
}
|
||||
if point.value > max && timeRange.isInRange(point.time) {
|
||||
max = point.value
|
||||
}
|
||||
if point.value < min && timeRange.isInRange(point.time) {
|
||||
min = point.value
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return ValueExtrema{max: max, min: min}
|
||||
}
|
||||
|
||||
func (r *TimeRange) isInRange(time time.Time) bool {
|
||||
return time.After(r.min) && time.Before(r.max)
|
||||
}
|
||||
|
|
@ -0,0 +1,103 @@
|
|||
package runchart
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
ui "github.com/sqshq/termui"
|
||||
"image"
|
||||
"math"
|
||||
)
|
||||
|
||||
const (
|
||||
xAxisLegendIndent = 10
|
||||
yAxisLegendIndent = 1
|
||||
heightWithLabelOnly = 3
|
||||
heightWithDetails = 7
|
||||
)
|
||||
|
||||
type Legend struct {
|
||||
Enabled bool
|
||||
Details bool
|
||||
}
|
||||
|
||||
func (c *RunChart) renderLegend(buffer *ui.Buffer, rectangle image.Rectangle) {
|
||||
|
||||
if !c.legend.Enabled {
|
||||
return
|
||||
}
|
||||
|
||||
height := heightWithLabelOnly
|
||||
if c.legend.Details {
|
||||
height = heightWithDetails
|
||||
}
|
||||
|
||||
rowCount := (c.Dx() - yAxisLegendIndent) / (height + yAxisLegendIndent)
|
||||
columnCount := int(math.Ceil(float64(len(c.lines)) / float64(rowCount)))
|
||||
columnWidth := getColumnWidth(c.lines, c.precision)
|
||||
|
||||
for col := 0; col < columnCount; col++ {
|
||||
for row := 0; row < rowCount; row++ {
|
||||
|
||||
lineIndex := row + rowCount*col
|
||||
if len(c.lines) <= lineIndex {
|
||||
break
|
||||
}
|
||||
|
||||
line := c.lines[row+rowCount*col]
|
||||
extrema := getLineValueExtrema(line.points)
|
||||
x := c.Inner.Max.X - (columnWidth+xAxisLegendIndent)*(col+1)
|
||||
y := c.Inner.Min.Y + yAxisLegendIndent + row*(height)
|
||||
|
||||
titleStyle := ui.NewStyle(line.color)
|
||||
detailsStyle := ui.NewStyle(ui.ColorWhite)
|
||||
|
||||
buffer.SetString(string(ui.DOT), titleStyle, image.Pt(x-2, y))
|
||||
buffer.SetString(line.label, titleStyle, image.Pt(x, y))
|
||||
|
||||
if !c.legend.Details {
|
||||
continue
|
||||
}
|
||||
|
||||
details := [4]string{
|
||||
fmt.Sprintf("cur %s", formatValue(line.points[len(line.points)-1].value, c.precision)),
|
||||
fmt.Sprintf("max %s", formatValue(extrema.max, c.precision)),
|
||||
fmt.Sprintf("min %s", formatValue(extrema.min, c.precision)),
|
||||
fmt.Sprintf("dif %s", formatValue(1, c.precision)),
|
||||
}
|
||||
|
||||
for i, detail := range details {
|
||||
buffer.SetString(detail, detailsStyle, image.Pt(x, y+i+yAxisLegendIndent))
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func getColumnWidth(lines []TimeLine, precision int) int {
|
||||
width := len(formatValue(0, precision))
|
||||
for _, line := range lines {
|
||||
if len(line.label) > width {
|
||||
width = len(line.label)
|
||||
}
|
||||
}
|
||||
return width
|
||||
}
|
||||
|
||||
// TODO remove and use the one from line
|
||||
func getLineValueExtrema(points []TimePoint) ValueExtrema {
|
||||
|
||||
if len(points) == 0 {
|
||||
return ValueExtrema{0, 0}
|
||||
}
|
||||
|
||||
var max, min = -math.MaxFloat64, math.MaxFloat64
|
||||
|
||||
for _, point := range points {
|
||||
if point.value > max {
|
||||
max = point.value
|
||||
}
|
||||
if point.value < min {
|
||||
min = point.value
|
||||
}
|
||||
}
|
||||
|
||||
return ValueExtrema{max: max, min: min}
|
||||
}
|
||||
|
|
@ -0,0 +1,338 @@
|
|||
package runchart
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"github.com/sqshq/sampler/console"
|
||||
"github.com/sqshq/sampler/data"
|
||||
"image"
|
||||
"math"
|
||||
"strconv"
|
||||
"sync"
|
||||
"time"
|
||||
|
||||
ui "github.com/sqshq/termui"
|
||||
)
|
||||
|
||||
const (
|
||||
xAxisLabelsHeight = 1
|
||||
xAxisLabelsWidth = 8
|
||||
xAxisLabelsIndent = 2
|
||||
xAxisGridWidth = xAxisLabelsIndent + xAxisLabelsWidth
|
||||
yAxisLabelsHeight = 1
|
||||
yAxisLabelsIndent = 1
|
||||
|
||||
historyReserveMin = 20
|
||||
|
||||
xBrailleMultiplier = 2
|
||||
yBrailleMultiplier = 4
|
||||
)
|
||||
|
||||
type Mode int
|
||||
|
||||
const (
|
||||
Default Mode = 0
|
||||
Pinpoint Mode = 1
|
||||
)
|
||||
|
||||
type RunChart struct {
|
||||
ui.Block
|
||||
lines []TimeLine
|
||||
grid ChartGrid
|
||||
timescale time.Duration
|
||||
mutex *sync.Mutex
|
||||
mode Mode
|
||||
selection time.Time
|
||||
precision int
|
||||
legend Legend
|
||||
}
|
||||
|
||||
type TimePoint struct {
|
||||
value float64
|
||||
time time.Time
|
||||
coordinate int
|
||||
}
|
||||
|
||||
type TimeLine struct {
|
||||
points []TimePoint
|
||||
extrema ValueExtrema
|
||||
color ui.Color
|
||||
label string
|
||||
selection int
|
||||
}
|
||||
|
||||
type TimeRange struct {
|
||||
max time.Time
|
||||
min time.Time
|
||||
}
|
||||
|
||||
type ValueExtrema struct {
|
||||
max float64
|
||||
min float64
|
||||
}
|
||||
|
||||
func NewRunChart(title string, precision int, refreshRateMs int, legend Legend) *RunChart {
|
||||
block := *ui.NewBlock()
|
||||
block.Title = title
|
||||
return &RunChart{
|
||||
Block: block,
|
||||
lines: []TimeLine{},
|
||||
timescale: calculateTimescale(refreshRateMs),
|
||||
mutex: &sync.Mutex{},
|
||||
precision: precision,
|
||||
mode: Default,
|
||||
legend: legend,
|
||||
}
|
||||
}
|
||||
|
||||
func (c *RunChart) newTimePoint(value float64) TimePoint {
|
||||
now := time.Now()
|
||||
return TimePoint{
|
||||
value: value,
|
||||
time: now,
|
||||
coordinate: c.calculateTimeCoordinate(now),
|
||||
}
|
||||
}
|
||||
|
||||
func (c *RunChart) Draw(buffer *ui.Buffer) {
|
||||
|
||||
c.mutex.Lock()
|
||||
c.Block.Draw(buffer)
|
||||
c.grid = c.newChartGrid()
|
||||
|
||||
drawArea := image.Rect(
|
||||
c.Inner.Min.X+c.grid.minTimeWidth+1, c.Inner.Min.Y,
|
||||
c.Inner.Max.X, c.Inner.Max.Y-xAxisLabelsHeight-1,
|
||||
)
|
||||
|
||||
c.renderAxes(buffer)
|
||||
c.renderLines(buffer, drawArea)
|
||||
c.renderLegend(buffer, drawArea)
|
||||
c.mutex.Unlock()
|
||||
}
|
||||
|
||||
func (c *RunChart) ConsumeSample(sample data.Sample) {
|
||||
|
||||
float, err := strconv.ParseFloat(sample.Value, 64)
|
||||
|
||||
if err != nil {
|
||||
// TODO visual notification + check sample.Error
|
||||
}
|
||||
|
||||
c.mutex.Lock()
|
||||
|
||||
lineIndex := -1
|
||||
|
||||
for i, line := range c.lines {
|
||||
if line.label == sample.Label {
|
||||
lineIndex = i
|
||||
}
|
||||
}
|
||||
|
||||
if lineIndex == -1 {
|
||||
line := &TimeLine{
|
||||
points: []TimePoint{},
|
||||
color: sample.Color,
|
||||
label: sample.Label,
|
||||
}
|
||||
c.lines = append(c.lines, *line)
|
||||
lineIndex = len(c.lines) - 1
|
||||
}
|
||||
|
||||
line := c.lines[lineIndex]
|
||||
timePoint := c.newTimePoint(float)
|
||||
line.points = append(line.points, timePoint)
|
||||
c.lines[lineIndex] = line
|
||||
|
||||
c.trimOutOfRangeValues()
|
||||
c.mutex.Unlock()
|
||||
}
|
||||
|
||||
func (c *RunChart) renderLines(buffer *ui.Buffer, drawArea image.Rectangle) {
|
||||
|
||||
canvas := ui.NewCanvas()
|
||||
canvas.Rectangle = drawArea
|
||||
|
||||
if len(c.lines) == 0 || len(c.lines[0].points) == 0 {
|
||||
return
|
||||
}
|
||||
|
||||
selectionCoordinate := c.calculateTimeCoordinate(c.selection)
|
||||
selectionPoints := make(map[int]image.Point)
|
||||
|
||||
probe := c.lines[0].points[0]
|
||||
delta := ui.AbsInt(c.calculateTimeCoordinate(probe.time) - probe.coordinate)
|
||||
|
||||
for i, line := range c.lines {
|
||||
|
||||
xPoint := make(map[int]image.Point)
|
||||
xOrder := make([]int, 0)
|
||||
|
||||
if line.selection != 0 {
|
||||
line.selection -= delta
|
||||
c.lines[i].selection = line.selection
|
||||
}
|
||||
|
||||
for j, timePoint := range line.points {
|
||||
|
||||
timePoint.coordinate -= delta
|
||||
line.points[j] = timePoint
|
||||
|
||||
var y int
|
||||
if c.grid.valueExtrema.max == c.grid.valueExtrema.min {
|
||||
y = (drawArea.Dy() - 2) / 2
|
||||
} else {
|
||||
valuePerY := (c.grid.valueExtrema.max - c.grid.valueExtrema.min) / float64(drawArea.Dy()-2)
|
||||
y = int(float64(timePoint.value-c.grid.valueExtrema.min) / valuePerY)
|
||||
}
|
||||
|
||||
point := image.Pt(timePoint.coordinate, drawArea.Max.Y-y-1)
|
||||
|
||||
if _, exists := xPoint[point.X]; exists {
|
||||
continue
|
||||
}
|
||||
|
||||
if !point.In(drawArea) {
|
||||
continue
|
||||
}
|
||||
|
||||
if line.selection == 0 {
|
||||
if len(line.points) > j+1 && ui.AbsInt(timePoint.coordinate-selectionCoordinate) > ui.AbsInt(line.points[j+1].coordinate-selectionCoordinate) {
|
||||
selectionPoints[i] = point
|
||||
}
|
||||
} else {
|
||||
if timePoint.coordinate == line.selection {
|
||||
selectionPoints[i] = point
|
||||
}
|
||||
}
|
||||
|
||||
xPoint[point.X] = point
|
||||
xOrder = append(xOrder, point.X)
|
||||
}
|
||||
|
||||
for i, x := range xOrder {
|
||||
|
||||
currentPoint := xPoint[x]
|
||||
var previousPoint image.Point
|
||||
|
||||
if i == 0 {
|
||||
previousPoint = currentPoint
|
||||
} else {
|
||||
previousPoint = xPoint[xOrder[i-1]]
|
||||
}
|
||||
|
||||
canvas.Line(
|
||||
braillePoint(previousPoint),
|
||||
braillePoint(currentPoint),
|
||||
line.color,
|
||||
)
|
||||
}
|
||||
}
|
||||
|
||||
canvas.Draw(buffer)
|
||||
|
||||
if c.mode == Pinpoint {
|
||||
for lineIndex, point := range selectionPoints {
|
||||
buffer.SetCell(ui.NewCell(console.SymbolSelection, ui.NewStyle(c.lines[lineIndex].color)), point)
|
||||
if c.lines[lineIndex].selection == 0 {
|
||||
c.lines[lineIndex].selection = point.X
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (c *RunChart) trimOutOfRangeValues() {
|
||||
|
||||
minRangeTime := c.grid.timeRange.min.Add(-time.Minute * time.Duration(historyReserveMin))
|
||||
|
||||
for i, item := range c.lines {
|
||||
lastOutOfRangeValueIndex := -1
|
||||
|
||||
for j, point := range item.points {
|
||||
if point.time.Before(minRangeTime) {
|
||||
lastOutOfRangeValueIndex = j
|
||||
}
|
||||
}
|
||||
|
||||
if lastOutOfRangeValueIndex > 0 {
|
||||
item.points = append(item.points[:0], item.points[lastOutOfRangeValueIndex+1:]...)
|
||||
c.lines[i] = item
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (c *RunChart) calculateTimeCoordinate(t time.Time) int {
|
||||
timeDeltaWithGridMaxTime := c.grid.timeRange.max.Sub(t).Nanoseconds()
|
||||
timeDeltaToPaddingRelation := float64(timeDeltaWithGridMaxTime) / float64(c.timescale.Nanoseconds())
|
||||
return c.grid.maxTimeWidth - int(math.Ceil(float64(xAxisGridWidth)*timeDeltaToPaddingRelation))
|
||||
}
|
||||
|
||||
// TODO add boundaries for values in range
|
||||
func (c *RunChart) getMaxValueLength() int {
|
||||
|
||||
maxValueLength := 0
|
||||
|
||||
for _, line := range c.lines {
|
||||
for _, point := range line.points {
|
||||
l := len(formatValue(point.value, c.precision))
|
||||
if l > maxValueLength {
|
||||
maxValueLength = l
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return maxValueLength
|
||||
}
|
||||
|
||||
func (c *RunChart) MoveSelection(shift int) {
|
||||
|
||||
if c.mode == Default {
|
||||
c.mode = Pinpoint
|
||||
c.selection = getMidRangeTime(c.grid.timeRange)
|
||||
return
|
||||
} else {
|
||||
c.selection = c.selection.Add(c.grid.timePerPoint * time.Duration(shift))
|
||||
if c.selection.After(c.grid.timeRange.max) {
|
||||
c.selection = c.grid.timeRange.max
|
||||
} else if c.selection.Before(c.grid.timeRange.min) {
|
||||
c.selection = c.grid.timeRange.min
|
||||
}
|
||||
}
|
||||
|
||||
for i := range c.lines {
|
||||
c.lines[i].selection = 0
|
||||
}
|
||||
}
|
||||
|
||||
func (c *RunChart) DisableSelection() {
|
||||
if c.mode == Pinpoint {
|
||||
c.mode = Default
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
func getMidRangeTime(r TimeRange) time.Time {
|
||||
delta := r.max.Sub(r.min)
|
||||
return r.max.Add(-delta / 2)
|
||||
}
|
||||
|
||||
func formatValue(value float64, precision int) string {
|
||||
format := "%." + strconv.Itoa(precision) + "f"
|
||||
return fmt.Sprintf(format, value)
|
||||
}
|
||||
|
||||
// time duration between grid lines
|
||||
func calculateTimescale(refreshRateMs int) time.Duration {
|
||||
|
||||
multiplier := refreshRateMs * xAxisGridWidth / 2
|
||||
timescale := time.Duration(time.Millisecond * time.Duration(multiplier)).Round(time.Second)
|
||||
|
||||
if timescale.Seconds() == 0 {
|
||||
return time.Second
|
||||
} else {
|
||||
return timescale
|
||||
}
|
||||
}
|
||||
|
||||
func braillePoint(point image.Point) image.Point {
|
||||
return image.Point{X: point.X * xBrailleMultiplier, Y: point.Y * yBrailleMultiplier}
|
||||
}
|
||||
Loading…
Reference in New Issue