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mostly working

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This commit is contained in:
Will Charczuk 2019-02-13 18:55:13 -08:00
parent 26eaa1d898
commit 5f42a580a9
47 changed files with 914 additions and 637 deletions
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145
_examples/request_timings/main.go
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@ -4,7 +4,6 @@ import (
"fmt"
"net/http"
"strconv"
"strings"
"time"
chart "github.com/wcharczuk/go-chart"
@ -24,7 +23,7 @@ func readData() ([]time.Time, []float64) {
var xvalues []time.Time
var yvalues []float64
err := chart.ReadLines("requests.csv", func(line string) error {
parts := strings.Split(line, ",")
parts := chart.SplitCSV(line)
year := parseInt(parts[0])
month := parseInt(parts[1])
day := parseInt(parts[2])
@ -51,84 +50,84 @@ func releases() []chart.GridLine {
}
}
func drawChart(res http.ResponseWriter, req *http.Request) {
xvalues, yvalues := readData()
mainSeries := chart.TimeSeries{
Name: "Prod Request Timings",
Style: chart.Style{
Show: true,
StrokeColor: chart.ColorBlue,
FillColor: chart.ColorBlue.WithAlpha(100),
},
XValues: xvalues,
YValues: yvalues,
}
linreg := &chart.LinearRegressionSeries{
Name: "Linear Regression",
Style: chart.Style{
Show: true,
StrokeColor: chart.ColorAlternateBlue,
StrokeDashArray: []float64{5.0, 5.0},
},
InnerSeries: mainSeries,
}
sma := &chart.SMASeries{
Name: "SMA",
Style: chart.Style{
Show: true,
StrokeColor: chart.ColorRed,
StrokeDashArray: []float64{5.0, 5.0},
},
InnerSeries: mainSeries,
}
graph := chart.Chart{
Width: 1280,
Height: 720,
Background: chart.Style{
Padding: chart.Box{
Top: 50,
func drawChart(log chart.Logger) http.HandlerFunc {
return func(res http.ResponseWriter, req *http.Request) {
xvalues, yvalues := readData()
mainSeries := chart.TimeSeries{
Name: "Prod Request Timings",
Style: chart.Style{
StrokeColor: chart.ColorBlue,
FillColor: chart.ColorBlue.WithAlpha(100),
},
},
YAxis: chart.YAxis{
Name: "Elapsed Millis",
NameStyle: chart.StyleShow(),
Style: chart.StyleShow(),
TickStyle: chart.Style{
TextRotationDegrees: 45.0,
XValues: xvalues,
YValues: yvalues,
}
linreg := &chart.LinearRegressionSeries{
Name: "Linear Regression",
Style: chart.Style{
StrokeColor: chart.ColorAlternateBlue,
StrokeDashArray: []float64{5.0, 5.0},
},
ValueFormatter: func(v interface{}) string {
return fmt.Sprintf("%d ms", int(v.(float64)))
InnerSeries: mainSeries,
}
sma := &chart.SMASeries{
Name: "SMA",
Style: chart.Style{
StrokeColor: chart.ColorRed,
StrokeDashArray: []float64{5.0, 5.0},
},
},
XAxis: chart.XAxis{
Style: chart.StyleShow(),
ValueFormatter: chart.TimeHourValueFormatter,
GridMajorStyle: chart.Style{
Show: true,
StrokeColor: chart.ColorAlternateGray,
StrokeWidth: 1.0,
InnerSeries: mainSeries,
}
graph := chart.Chart{
Log: log,
Width: 1280,
Height: 720,
Background: chart.Style{
Padding: chart.Box{
Top: 50,
},
},
GridLines: releases(),
},
Series: []chart.Series{
mainSeries,
linreg,
chart.LastValueAnnotation(linreg),
sma,
chart.LastValueAnnotation(sma),
},
YAxis: chart.YAxis{
Name: "Elapsed Millis",
TickStyle: chart.Style{
TextRotationDegrees: 45.0,
},
ValueFormatter: func(v interface{}) string {
return fmt.Sprintf("%d ms", int(v.(float64)))
},
},
XAxis: chart.XAxis{
ValueFormatter: chart.TimeHourValueFormatter,
GridMajorStyle: chart.Style{
StrokeColor: chart.ColorAlternateGray,
StrokeWidth: 1.0,
},
GridLines: releases(),
},
Series: []chart.Series{
mainSeries,
linreg,
chart.LastValueAnnotation(linreg),
sma,
chart.LastValueAnnotation(sma),
},
}
graph.Elements = []chart.Renderable{chart.LegendThin(&graph)}
res.Header().Set("Content-Type", chart.ContentTypePNG)
if err := graph.Render(chart.PNG, res); err != nil {
log.Err(err)
}
}
graph.Elements = []chart.Renderable{chart.LegendThin(&graph)}
res.Header().Set("Content-Type", chart.ContentTypePNG)
graph.Render(chart.PNG, res)
}
func main() {
http.HandleFunc("/", drawChart)
log := chart.NewLogger()
log.Infof("listening on :8080")
http.HandleFunc("/", drawChart(log))
http.ListenAndServe(":8080", nil)
}