Golang ScatterChart.Plot方法代码示例

//.........这里部分代码省略.........
			if meta.Unit != "" {
				m_units[q.Metric] = meta.Unit
			}
			if meta.Rate != "" {
				switch meta.Rate {
				case metadata.Gauge:
					// ignore
				case metadata.Rate:
					q.Rate = true
				case metadata.Counter:
					q.Rate = true
					q.RateOptions = opentsdb.RateOptions{
						Counter:    true,
						ResetValue: 1,
					}
				default:
					return nil, fmt.Errorf("unknown metadata rate: %s", meta.Rate)
				}
			}
		}
		queries[i] = fmt.Sprintf(`q("%v", "%v", "%v")`, q, start, end)
		if !schedule.SystemConf.GetTSDBContext().Version().FilterSupport() {
			if err := schedule.Search.Expand(q); err != nil {
				return nil, err
			}
		}
	}
	var tr opentsdb.ResponseSet
	b, _ := json.MarshalIndent(oreq, "", "  ")
	t.StepCustomTiming("tsdb", "query", string(b), func() {
		h := schedule.SystemConf.GetTSDBHost()
		if h == "" {
			err = fmt.Errorf("tsdbHost not set")
			return
		}
		tr, err = oreq.Query(h)
	})
	if err != nil {
		return nil, err
	}
	cs, err := makeChart(tr, m_units)
	if err != nil {
		return nil, err
	}
	if _, present := r.Form["png"]; present {
		c := chart.ScatterChart{
			Title: fmt.Sprintf("%v - %v", oreq.Start, queries),
		}
		c.XRange.Time = true
		if min, err := strconv.ParseFloat(r.FormValue("min"), 64); err == nil {
			c.YRange.MinMode.Fixed = true
			c.YRange.MinMode.Value = min
		}
		if max, err := strconv.ParseFloat(r.FormValue("max"), 64); err == nil {
			c.YRange.MaxMode.Fixed = true
			c.YRange.MaxMode.Value = max
		}
		for ri, r := range cs {
			pts := make([]chart.EPoint, len(r.Data))
			for idx, v := range r.Data {
				pts[idx].X = v[0]
				pts[idx].Y = v[1]
			}
			slice.Sort(pts, func(i, j int) bool {
				return pts[i].X < pts[j].X
			})
			c.AddData(r.Name, pts, chart.PlotStyleLinesPoints, sched.Autostyle(ri))
		}
		w.Header().Set("Content-Type", "image/svg+xml")
		white := color.RGBA{0xff, 0xff, 0xff, 0xff}
		const width = 800
		const height = 600
		s := svg.New(w)
		s.Start(width, height)
		s.Rect(0, 0, width, height, "fill: #ffffff")
		sgr := svgg.AddTo(s, 0, 0, width, height, "", 12, white)
		c.Plot(sgr)
		s.End()
		return nil, nil
	}
	var a []annotate.Annotation
	warnings := []string{}
	if schedule.SystemConf.AnnotateEnabled() {
		a, err = annotateBackend.GetAnnotations(&startT, &endT)
		if err != nil {
			warnings = append(warnings, fmt.Sprintf("unable to get annotations: %v", err))
		}
	}
	return struct {
		Queries     []string
		Series      []*chartSeries
		Annotations []annotate.Annotation
		Warnings    []string
	}{
		queries,
		cs,
		a,
		warnings,
	}, nil
}

func InitStatsHUD() {
	plots := chart.ScatterChart{Title: "", Options: glchart.DarkStyle}
	start := time.Now()

	l := float64(start.UnixNano())
	r := float64(start.Add(2 * time.Second).UnixNano())

	plots.XRange.Fixed(l, r, 1e9)
	plots.YRange.Fixed(0.1, 100, 10)

	plots.XRange.TicSetting.Tics, plots.YRange.TicSetting.Tics = 1, 1
	plots.XRange.TicSetting.Mirror, plots.YRange.TicSetting.Mirror = 2, 2
	plots.XRange.TicSetting.Grid, plots.YRange.TicSetting.Grid = 2, 2

	plots.YRange.ShowZero = true

	//plots.XRange.Log = true
	//plots.YRange.Log = true

	plots.Key.Pos, plots.Key.Cols = "obc", 3

	plots.XRange.TicSetting.Format = func(f float64) string {
		t := time.Unix(int64(f)/1e9, int64(f)%1e9)
		return fmt.Sprintf("%.3v", time.Since(t))
	}

	memhelper.GetMaxRSS()

	var gpufree float64

	gpupoll := gpuinfo.PollGPUMemory()
	go func() {
		for gpustatus := range gpupoll {
			gpufree = float64(memhelper.ByteSize(gpustatus.Free()) * memhelper.MiB)
		}
	}()

	statistics := &Statistics{}
	statistics.Add(&plots, "GPU Free", "#FF9F00", func() float64 { return gpufree })
	statistics.Add(&plots, "SpareRAM()", "#ff0000", func() float64 { return float64(SpareRAM() * 1e6) })
	statistics.Add(&plots, "MaxRSS", "#FFE240", func() float64 { return float64(memhelper.GetMaxRSS()) })
	statistics.Add(&plots, "Heap Idle", "#33ff33", func() float64 { return float64(memstats.HeapIdle) })
	statistics.Add(&plots, "Alloc", "#FF6600", func() float64 { return float64(memstats.Alloc) })
	statistics.Add(&plots, "Heap Alloc", "#006699", func() float64 { return float64(memstats.HeapAlloc) })
	statistics.Add(&plots, "Sys", "#996699", func() float64 { return float64(memstats.Sys) })
	statistics.Add(&plots, "System Free", "#3333ff", func() float64 { return float64(SystemFree()) })
	statistics.Add(&plots, "nBlocks x 1e6", "#FFCC00", func() float64 { return float64(nblocks * 1e6) })
	statistics.Add(&plots, "nDrawn x 1e6", "#9C8AA5", func() float64 { return float64(blocks_rendered * 1e6) })

	go func() {
		top := 0.

		i := -1
		for {
			time.Sleep(250 * time.Millisecond)
			max := statistics.Update()
			if max > top {
				top = max
			}
			i++
			if i%4 != 0 {
				continue
			}

			segment := float64(1e9)
			if time.Since(start) > 10*time.Second {
				segment = 5e9
			}
			if time.Since(start) > 1*time.Minute {
				segment = 30e9
			}

			// Update axis limits
			nr := float64(time.Now().Add(2 * time.Second).UnixNano())
			plots.XRange.Fixed(l, nr, segment)
			plots.YRange.Fixed(-1e9, top*1.1, 500e6)
		}
	}()

	const pw, ph = 640, 480

	scalex, scaley := 0.4, 0.5

	chart_gfxcontext := glchart.New(pw, ph, "", 10, color.RGBA{})

	StatsHUD = func() {
		glh.With(glh.Matrix{gl.PROJECTION}, func() {
			gl.LoadIdentity()
			gl.Translated(1-scalex, scaley-1, 0)
			gl.Scaled(scalex, scaley, 1)
			gl.Ortho(0, pw, ph, 0, -1, 1)
			gl.Translated(0, -50, 0)

			glh.With(glh.Attrib{gl.ENABLE_BIT}, func() {
				gl.Disable(gl.DEPTH_TEST)
				glh.With(&Timer{Name: "Chart"}, func() {
					plots.Plot(chart_gfxcontext)
				})
			})
		})
//.........这里部分代码省略.........