Add response time badge and chart

vendor/github.com/wcharczuk/go-chart/v2/continuous_series.go

@@ -0,0 +1,96 @@
+package chart
+
+import "fmt"
+
+// Interface Assertions.
+var (
+	_ Series              = (*ContinuousSeries)(nil)
+	_ FirstValuesProvider = (*ContinuousSeries)(nil)
+	_ LastValuesProvider  = (*ContinuousSeries)(nil)
+)
+
+// ContinuousSeries represents a line on a chart.
+type ContinuousSeries struct {
+	Name  string
+	Style Style
+
+	YAxis YAxisType
+
+	XValueFormatter ValueFormatter
+	YValueFormatter ValueFormatter
+
+	XValues []float64
+	YValues []float64
+}
+
+// GetName returns the name of the time series.
+func (cs ContinuousSeries) GetName() string {
+	return cs.Name
+}
+
+// GetStyle returns the line style.
+func (cs ContinuousSeries) GetStyle() Style {
+	return cs.Style
+}
+
+// Len returns the number of elements in the series.
+func (cs ContinuousSeries) Len() int {
+	return len(cs.XValues)
+}
+
+// GetValues gets the x,y values at a given index.
+func (cs ContinuousSeries) GetValues(index int) (float64, float64) {
+	return cs.XValues[index], cs.YValues[index]
+}
+
+// GetFirstValues gets the first x,y values.
+func (cs ContinuousSeries) GetFirstValues() (float64, float64) {
+	return cs.XValues[0], cs.YValues[0]
+}
+
+// GetLastValues gets the last x,y values.
+func (cs ContinuousSeries) GetLastValues() (float64, float64) {
+	return cs.XValues[len(cs.XValues)-1], cs.YValues[len(cs.YValues)-1]
+}
+
+// GetValueFormatters returns value formatter defaults for the series.
+func (cs ContinuousSeries) GetValueFormatters() (x, y ValueFormatter) {
+	if cs.XValueFormatter != nil {
+		x = cs.XValueFormatter
+	} else {
+		x = FloatValueFormatter
+	}
+	if cs.YValueFormatter != nil {
+		y = cs.YValueFormatter
+	} else {
+		y = FloatValueFormatter
+	}
+	return
+}
+
+// GetYAxis returns which YAxis the series draws on.
+func (cs ContinuousSeries) GetYAxis() YAxisType {
+	return cs.YAxis
+}
+
+// Render renders the series.
+func (cs ContinuousSeries) Render(r Renderer, canvasBox Box, xrange, yrange Range, defaults Style) {
+	style := cs.Style.InheritFrom(defaults)
+	Draw.LineSeries(r, canvasBox, xrange, yrange, style, cs)
+}
+
+// Validate validates the series.
+func (cs ContinuousSeries) Validate() error {
+	if len(cs.XValues) == 0 {
+		return fmt.Errorf("continuous series; must have xvalues set")
+	}
+
+	if len(cs.YValues) == 0 {
+		return fmt.Errorf("continuous series; must have yvalues set")
+	}
+
+	if len(cs.XValues) != len(cs.YValues) {
+		return fmt.Errorf("continuous series; must have same length xvalues as yvalues")
+	}
+	return nil
+}