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a0647f9
feat(plugin): implement request smoothing and add metrics endpoint
sendya c870c09
feat(metrics): add CPU and memory usage metrics to QsPlugin
sendya 81ce1ce
feat: implement TopK functionality for LRU cache and storage buckets,…
sendya 899d8a5
feat: implement real-time monitoring for QS plugin via SSE and introd…
sendya 4c0fbce
feat: enhance `TopK` output with object details and update `top` comm…
sendya 970b020
feat: Implement smoothed requests per second (RPS) calculation and di…
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| Original file line number | Diff line number | Diff line change | ||||
|---|---|---|---|---|---|---|
| @@ -0,0 +1,308 @@ | ||||||
| package main | ||||||
|
|
||||||
| import ( | ||||||
| "bufio" | ||||||
| "encoding/json" | ||||||
| "flag" | ||||||
| "fmt" | ||||||
| "log" | ||||||
| "net/http" | ||||||
| "strings" | ||||||
| "sync" | ||||||
| "sync/atomic" | ||||||
| "time" | ||||||
|
|
||||||
| "github.com/dustin/go-humanize" | ||||||
| terminal "github.com/gizak/termui/v3" | ||||||
| "github.com/gizak/termui/v3/widgets" | ||||||
| "github.com/samber/lo" | ||||||
| ) | ||||||
|
|
||||||
| var ( | ||||||
| endpoint = "" | ||||||
| tickInterval = time.Second * 1 | ||||||
| ) | ||||||
|
|
||||||
| func init() { | ||||||
| flag.StringVar(&endpoint, "endpoint", "http://localhost:8080/plugin/qs/graph", "The metrics endpoint to fetch data from tavern server.") | ||||||
| flag.DurationVar(&tickInterval, "interval", time.Second*1, "The interval to fetch metrics.") | ||||||
| } | ||||||
|
|
||||||
| func main() { | ||||||
| flag.Parse() | ||||||
|
|
||||||
| newDashboard() | ||||||
| } | ||||||
|
|
||||||
| func newDashboard() { | ||||||
| if err := terminal.Init(); err != nil { | ||||||
| log.Fatalf("failed to initialize termui: %v", err) | ||||||
| } | ||||||
| defer terminal.Close() | ||||||
|
|
||||||
| termWidth, _ := terminal.TerminalDimensions() | ||||||
|
|
||||||
| collected := atomic.Bool{} | ||||||
| cpuPercent := atomic.Uint32{} | ||||||
| memUsage := atomic.Uint64{} | ||||||
| memTotal := atomic.Uint64{} | ||||||
| diskPercent := atomic.Uint64{} // mock | ||||||
| diskUsage := atomic.Uint64{} | ||||||
| diskTotal := atomic.Uint64{} | ||||||
| startedAt := atomic.Int64{} | ||||||
|
|
||||||
| // 高级监控指标 { 热点url 热点域名 热点磁盘 } | ||||||
| list := widgets.NewList() | ||||||
| list.Title = "Hot URLs" | ||||||
| list.SetRect(0, 12, termWidth, 30) | ||||||
| list.BorderStyle.Fg = terminal.ColorWhite | ||||||
| list.TitleStyle.Fg = terminal.ColorCyan | ||||||
| list.TextStyle.Fg = terminal.ColorYellow | ||||||
|
|
||||||
| client := &http.Client{ | ||||||
| Transport: &http.Transport{}, | ||||||
| } | ||||||
|
|
||||||
| var ( | ||||||
| dataMu sync.RWMutex | ||||||
| latestData = make(map[string]float64) | ||||||
| latestHotUrls []string | ||||||
| ) | ||||||
|
|
||||||
| // Background SSE consumer | ||||||
| go func() { | ||||||
| for { | ||||||
| func() { | ||||||
| req, err := http.NewRequest(http.MethodGet, endpoint, nil) | ||||||
| if err != nil { | ||||||
| return | ||||||
| } | ||||||
|
|
||||||
| resp, err := client.Do(req) | ||||||
| if err != nil { | ||||||
| collected.Store(false) | ||||||
| return | ||||||
| } | ||||||
| defer resp.Body.Close() | ||||||
|
|
||||||
| if resp.StatusCode != http.StatusOK { | ||||||
| collected.Store(false) | ||||||
| return | ||||||
| } | ||||||
|
|
||||||
| collected.Store(true) | ||||||
| reader := bufio.NewReader(resp.Body) | ||||||
| for { | ||||||
| line, err := reader.ReadString('\n') | ||||||
| if err != nil { | ||||||
| return | ||||||
| } | ||||||
| line = strings.TrimSpace(line) | ||||||
| if strings.HasPrefix(line, "data:") { | ||||||
| jsonStr := strings.TrimSpace(strings.TrimPrefix(line, "data:")) | ||||||
| if jsonStr == "" { | ||||||
| continue | ||||||
| } | ||||||
|
|
||||||
| var rsp Graph | ||||||
| if err := json.Unmarshal([]byte(jsonStr), &rsp); err == nil { | ||||||
| dataMu.Lock() | ||||||
| latestData = rsp.Data | ||||||
| latestHotUrls = rsp.HotUrls | ||||||
| dataMu.Unlock() | ||||||
|
|
||||||
| startedAt.Store(rsp.StartedAt) | ||||||
| cpuPercent.Store(uint32(rsp.Data["cpu_percent"])) | ||||||
| memUsage.Store(uint64(rsp.Data["mem_usage"])) | ||||||
| memTotal.Store(uint64(rsp.Data["mem_total"])) | ||||||
| diskUsage.Store(uint64(rsp.Data["disk_usage"])) | ||||||
| diskTotal.Store(uint64(rsp.Data["disk_total"])) | ||||||
| } | ||||||
| } | ||||||
| } | ||||||
| }() | ||||||
| time.Sleep(time.Second) // Reconnect delay | ||||||
| } | ||||||
| }() | ||||||
|
|
||||||
| // 基础监控指标 { qps, cpu, memory } | ||||||
| metricGrid := terminal.NewGrid() | ||||||
| metricGrid.SetRect(0, 3, termWidth, 20) | ||||||
|
|
||||||
| banner, bannerDraw := func() (*widgets.Paragraph, func()) { | ||||||
| banner := widgets.NewParagraph() | ||||||
| banner.SetRect(0, 0, termWidth, 3) | ||||||
| banner.Title = " Tavern (PRESS q TO QUIT) " | ||||||
| banner.Border = true | ||||||
|
|
||||||
| textDraw := func() { | ||||||
| color := "fg:red" | ||||||
| status := "Disconnected" | ||||||
| if collected.Load() { | ||||||
| color = "fg:green" | ||||||
| status = "Connected" | ||||||
| } | ||||||
|
|
||||||
| startAt := time.UnixMilli(startedAt.Load()) | ||||||
|
|
||||||
| banner.Text = fmt.Sprintf("%s | Sampling @ [%s](fg:blue) | [%s](%s) (%s) | Uptime %s", | ||||||
| endpoint, tickInterval.String(), status, color, startAt.Format(time.RFC1123), humanize.Time(startAt)) | ||||||
| } | ||||||
| textDraw() | ||||||
|
|
||||||
| return banner, textDraw | ||||||
| }() | ||||||
|
|
||||||
| rater, raterDraw := func() (*widgets.Paragraph, func()) { | ||||||
| rater := widgets.NewParagraph() | ||||||
| rater.Title = "Requests" | ||||||
| rater.SetRect(0, 3, 50, 6) | ||||||
| rater.BorderStyle.Fg = terminal.ColorWhite | ||||||
| rater.TitleStyle.Fg = terminal.ColorCyan | ||||||
|
|
||||||
| draw := func() { | ||||||
| dataMu.RLock() | ||||||
| data := make(map[string]float64, len(latestData)) | ||||||
| for k, v := range latestData { | ||||||
| data[k] = v | ||||||
| } | ||||||
| hotUrls := make([]string, len(latestHotUrls)) | ||||||
| copy(hotUrls, latestHotUrls) | ||||||
| dataMu.RUnlock() | ||||||
|
|
||||||
| rater.Text = fmt.Sprintf("\nRequests/sec: %d \nTotal: %d \n2xx : %d\n4xx : %d\n499 : %d\n5xx : %d", | ||||||
| int(data["total"]), int(data["total"]), int(data["2xx"]), int(data["4xx"]), int(data["499"]), int(data["5xx"])) | ||||||
|
||||||
| int(data["total"]), int(data["total"]), int(data["2xx"]), int(data["4xx"]), int(data["499"]), int(data["5xx"])) | |
| int(data["rps"]), int(data["total"]), int(data["2xx"]), int(data["4xx"]), int(data["499"]), int(data["5xx"])) |
Comment on lines
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Copilot
AI
Feb 12, 2026
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diskPercent is never set (and the label hardcodes 0%%), so the Disk gauge percent will always be 0 regardless of actual usage. Either compute and store the percentage from disk_usage/disk_total, or remove diskPercent and derive percent in diskDraw.
Comment on lines
+253
to
+255
Copilot
AI
Feb 12, 2026
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The render loop uses time.NewTicker(time.Second) and ignores the -interval flag, so UI refresh rate can't be configured. Use tickInterval when creating the ticker (and stop it on exit).
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The
Bucket.TopKdoc says it returns "the top k most frequently used keys", but current implementations return formatted strings likepath@@time@@refsfor UI consumption. This mismatch makes the interface confusing and brittle. Consider either (1) changing the method name/docs to reflect returning display/metadata strings, or (2) returning a structured type (e.g.[]HotKey) and/or separateTopKKeys/TopKStatsAPIs.