mirror of
https://github.com/smallnest/rpcx.git
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140 lines
3.4 KiB
Go
140 lines
3.4 KiB
Go
//go:build !nostatsview
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// +build !nostatsview
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package server
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import (
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"context"
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"fmt"
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"net"
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"net/http"
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"net/http/pprof"
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"time"
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"github.com/go-echarts/go-echarts/v2/components"
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"github.com/go-echarts/go-echarts/v2/templates"
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"github.com/rs/cors"
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"github.com/smallnest/statsview/statics"
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"github.com/smallnest/statsview/viewer"
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)
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// ViewManager
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type ViewManager struct {
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ln net.Listener
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srv *http.Server
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Smgr *viewer.StatsMgr
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Ctx context.Context
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Cancel context.CancelFunc
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Views []viewer.Viewer
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}
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// Register registers views to the ViewManager
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func (vm *ViewManager) Register(views ...viewer.Viewer) {
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vm.Views = append(vm.Views, views...)
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}
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// Start runs a http server and begin to collect metrics
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func (vm *ViewManager) Start() error {
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return vm.srv.Serve(vm.ln)
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}
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// Stop shutdown the http server gracefully
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func (vm *ViewManager) Stop() {
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ctx, cancel := context.WithTimeout(context.Background(), time.Second)
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defer cancel()
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vm.srv.Shutdown(ctx)
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vm.Cancel()
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}
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func init() {
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templates.PageTpl = `
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{{- define "page" }}
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<!DOCTYPE html>
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<html>
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{{- template "header" . }}
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<body>
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<p> rpcx profiler</em></p>
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<style> .box { justify-content:center; display:flex; flex-wrap:wrap } </style>
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<div class="box"> {{- range .Charts }} {{ template "base" . }} {{- end }} </div>
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</body>
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</html>
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{{ end }}
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`
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}
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// NewViewManager creates a new ViewManager instance
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func NewViewManager(ln net.Listener, s *Server) *ViewManager {
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viewer.SetConfiguration(viewer.WithAddr(ln.Addr().String()), viewer.WithLinkAddr(ln.Addr().String()))
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page := components.NewPage()
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page.PageTitle = "Statsview"
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page.AssetsHost = fmt.Sprintf("http://%s/debug/statsview/statics/", viewer.LinkAddr())
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page.Assets.JSAssets.Add("jquery.min.js")
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srv := &http.Server{
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ReadTimeout: time.Minute,
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WriteTimeout: time.Minute,
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MaxHeaderBytes: 1 << 20,
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}
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mgr := &ViewManager{
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ln: ln,
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srv: srv,
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}
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mgr.Ctx, mgr.Cancel = context.WithCancel(context.Background())
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mgr.Register(
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viewer.NewGoroutinesViewer(),
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viewer.NewHeapViewer(),
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viewer.NewStackViewer(),
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viewer.NewGCNumViewer(),
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viewer.NewGCSizeViewer(),
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viewer.NewGCCPUFractionViewer(),
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NewHandlerViewer(s),
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NewProcessTimeViewer(s),
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NewRequestRateViewer(s),
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)
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smgr := viewer.NewStatsMgr(mgr.Ctx)
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for _, v := range mgr.Views {
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v.SetStatsMgr(smgr)
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}
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mux := http.NewServeMux()
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mux.HandleFunc("/debug/pprof/", pprof.Index)
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mux.HandleFunc("/debug/pprof/cmdline", pprof.Cmdline)
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mux.HandleFunc("/debug/pprof/profile", pprof.Profile)
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mux.HandleFunc("/debug/pprof/symbol", pprof.Symbol)
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mux.HandleFunc("/debug/pprof/trace", pprof.Trace)
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for _, v := range mgr.Views {
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page.AddCharts(v.View())
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mux.HandleFunc("/debug/statsview/view/"+v.Name(), v.Serve)
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}
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mux.HandleFunc("/debug/statsview", func(w http.ResponseWriter, _ *http.Request) {
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page.Render(w)
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})
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staticsPrev := "/debug/statsview/statics/"
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mux.HandleFunc(staticsPrev+"echarts.min.js", func(w http.ResponseWriter, _ *http.Request) {
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w.Write([]byte(statics.EchartJS))
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})
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mux.HandleFunc(staticsPrev+"jquery.min.js", func(w http.ResponseWriter, _ *http.Request) {
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w.Write([]byte(statics.JqueryJS))
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})
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mux.HandleFunc(staticsPrev+"themes/westeros.js", func(w http.ResponseWriter, _ *http.Request) {
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w.Write([]byte(statics.WesterosJS))
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})
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mux.HandleFunc(staticsPrev+"themes/macarons.js", func(w http.ResponseWriter, _ *http.Request) {
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w.Write([]byte(statics.MacaronsJS))
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})
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mgr.srv.Handler = cors.AllowAll().Handler(mux)
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return mgr
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}
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