213 lines
5.6 KiB
Go
213 lines
5.6 KiB
Go
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"fmt"
|
|
cors "github.com/AdhityaRamadhanus/fasthttpcors"
|
|
"github.com/go-echarts/go-echarts/v2/charts"
|
|
"github.com/go-echarts/go-echarts/v2/components"
|
|
"github.com/go-echarts/go-echarts/v2/opts"
|
|
"github.com/go-echarts/go-echarts/v2/templates"
|
|
"github.com/valyala/fasthttp"
|
|
"net"
|
|
"strings"
|
|
"text/template"
|
|
"time"
|
|
)
|
|
|
|
var (
|
|
assertsPath = "/echarts/statics/"
|
|
apiPath = "/data"
|
|
latencyView = "latency"
|
|
rpsView = "rps"
|
|
timeFormat = "15:04:05"
|
|
refreshInterval = time.Second
|
|
)
|
|
|
|
const (
|
|
ViewTpl = `
|
|
$(function () { setInterval({{ .ViewID }}_sync, {{ .Interval }}); });
|
|
function {{ .ViewID }}_sync() {
|
|
$.ajax({
|
|
type: "GET",
|
|
url: "http://{{ .Addr }}{{ .APIPath }}/{{ .Route }}",
|
|
dataType: "json",
|
|
success: function (result) {
|
|
let opt = goecharts_{{ .ViewID }}.getOption();
|
|
let x = opt.xAxis[0].data;
|
|
x.push(result.time);
|
|
opt.xAxis[0].data = x;
|
|
for (let i = 0; i < result.values.length; i++) {
|
|
let y = opt.series[i].data;
|
|
y.push({ value: result.values[i] });
|
|
opt.series[i].data = y;
|
|
goecharts_{{ .ViewID }}.setOption(opt);
|
|
}
|
|
}
|
|
});
|
|
}`
|
|
PageTpl = `
|
|
{{- define "page" }}
|
|
<!DOCTYPE html>
|
|
<html>
|
|
{{- template "header" . }}
|
|
<body>
|
|
<p align="center">🚀 <a href="https://github.com/six-ddc/plow"><b>Plow</b></a> %s</p>
|
|
<style> .box { justify-content:center; display:flex; flex-wrap:wrap } </style>
|
|
<div class="box"> {{- range .Charts }} {{ template "base" . }} {{- end }} </div>
|
|
</body>
|
|
</html>
|
|
{{ end }}
|
|
`
|
|
)
|
|
|
|
func (c *Charts) genViewTemplate(vid, route string) string {
|
|
tpl, err := template.New("view").Parse(ViewTpl)
|
|
if err != nil {
|
|
panic("failed to parse template " + err.Error())
|
|
}
|
|
|
|
var d = struct {
|
|
Interval int
|
|
Addr string
|
|
APIPath string
|
|
Route string
|
|
ViewID string
|
|
}{
|
|
Interval: int(refreshInterval.Milliseconds()),
|
|
Addr: c.linkAddr,
|
|
APIPath: apiPath,
|
|
Route: route,
|
|
ViewID: vid,
|
|
}
|
|
|
|
buf := bytes.Buffer{}
|
|
if err := tpl.Execute(&buf, d); err != nil {
|
|
panic("failed to execute template " + err.Error())
|
|
}
|
|
|
|
return buf.String()
|
|
}
|
|
|
|
func (c *Charts) newBasicView(route string) *charts.Line {
|
|
graph := charts.NewLine()
|
|
graph.SetGlobalOptions(
|
|
charts.WithTooltipOpts(opts.Tooltip{Show: true, Trigger: "axis"}),
|
|
charts.WithXAxisOpts(opts.XAxis{Name: "Time"}),
|
|
charts.WithInitializationOpts(opts.Initialization{
|
|
Width: "700px",
|
|
Height: "400px",
|
|
}),
|
|
charts.WithDataZoomOpts(opts.DataZoom{
|
|
Type: "slider",
|
|
XAxisIndex: []int{0},
|
|
}),
|
|
)
|
|
graph.SetXAxis([]string{}).SetSeriesOptions(charts.WithLineChartOpts(opts.LineChart{Smooth: true}))
|
|
graph.AddJSFuncs(c.genViewTemplate(graph.ChartID, route))
|
|
return graph
|
|
}
|
|
|
|
func (c *Charts) newLatencyView() components.Charter {
|
|
graph := c.newBasicView(latencyView)
|
|
graph.SetGlobalOptions(
|
|
charts.WithTitleOpts(opts.Title{Title: "Latency"}),
|
|
charts.WithYAxisOpts(opts.YAxis{Scale: true, AxisLabel: &opts.AxisLabel{Formatter: "{value} ms"}}),
|
|
charts.WithLegendOpts(opts.Legend{Show: true, Selected: map[string]bool{"Min": false, "Max": false}}),
|
|
)
|
|
graph.AddSeries("Min", []opts.LineData{}).
|
|
AddSeries("Mean", []opts.LineData{}).
|
|
AddSeries("Max", []opts.LineData{})
|
|
return graph
|
|
}
|
|
|
|
func (c *Charts) newRPSView() components.Charter {
|
|
graph := c.newBasicView(rpsView)
|
|
graph.SetGlobalOptions(
|
|
charts.WithTitleOpts(opts.Title{Title: "Reqs/sec"}),
|
|
charts.WithYAxisOpts(opts.YAxis{Scale: true}),
|
|
)
|
|
graph.AddSeries("RPS", []opts.LineData{})
|
|
return graph
|
|
}
|
|
|
|
type Metrics struct {
|
|
Values []interface{} `json:"values"`
|
|
Time string `json:"time"`
|
|
}
|
|
|
|
type Charts struct {
|
|
listenAddr string
|
|
linkAddr string
|
|
page *components.Page
|
|
ln net.Listener
|
|
dataFunc func() *ChartsReport
|
|
}
|
|
|
|
func NewCharts(listenAddr string, linkAddr string, dataFunc func() *ChartsReport, desc string) (*Charts, error) {
|
|
templates.PageTpl = fmt.Sprintf(PageTpl, desc)
|
|
ln, err := net.Listen("tcp4", listenAddr)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
c := &Charts{listenAddr: listenAddr, linkAddr: linkAddr, ln: ln, dataFunc: dataFunc}
|
|
|
|
c.page = components.NewPage()
|
|
c.page.PageTitle = "plow"
|
|
c.page.AssetsHost = fmt.Sprintf("http://%s%s", linkAddr, assertsPath)
|
|
c.page.Assets.JSAssets.Add("jquery.min.js")
|
|
c.page.AddCharts(c.newLatencyView(), c.newRPSView())
|
|
|
|
return c, nil
|
|
}
|
|
|
|
func (c *Charts) Handler(ctx *fasthttp.RequestCtx) {
|
|
path := string(ctx.Path())
|
|
switch path {
|
|
case assertsPath + "echarts.min.js":
|
|
_, _ = ctx.WriteString(EchartJS)
|
|
case assertsPath + "jquery.min.js":
|
|
_, _ = ctx.WriteString(JqueryJS)
|
|
case "/":
|
|
ctx.SetContentType("text/html")
|
|
_ = c.page.Render(ctx)
|
|
default:
|
|
if strings.HasPrefix(path, apiPath) {
|
|
view := path[len(apiPath)+1:]
|
|
var values []interface{}
|
|
reportData := c.dataFunc()
|
|
switch view {
|
|
case latencyView:
|
|
if reportData != nil {
|
|
values = append(values, reportData.Latency.min/1e6)
|
|
values = append(values, reportData.Latency.Mean()/1e6)
|
|
values = append(values, reportData.Latency.max/1e6)
|
|
} else {
|
|
values = append(values, nil, nil, nil)
|
|
}
|
|
case rpsView:
|
|
if reportData != nil {
|
|
values = append(values, reportData.RPS)
|
|
} else {
|
|
values = append(values, nil)
|
|
}
|
|
}
|
|
metrics := &Metrics{
|
|
Time: time.Now().Format(timeFormat),
|
|
Values: values,
|
|
}
|
|
_ = json.NewEncoder(ctx).Encode(metrics)
|
|
} else {
|
|
ctx.Error("NotFound", fasthttp.StatusNotFound)
|
|
}
|
|
}
|
|
}
|
|
|
|
func (c *Charts) Serve() {
|
|
server := fasthttp.Server{
|
|
Handler: cors.DefaultHandler().CorsMiddleware(c.Handler),
|
|
}
|
|
_ = server.Serve(c.ln)
|
|
}
|