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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["rps"]), int(data["total"]), int(data["2xx"]), int(data["4xx"]), int(data["499"]), int(data["5xx"])) | ||
|
|
||
| list.Rows = lo.Filter(lo.Map(hotUrls, toMap), filter) | ||
| } | ||
|
|
||
| draw() | ||
| return rater, draw | ||
| }() | ||
|
|
||
| load, loadDraw := func() (*widgets.Gauge, func()) { | ||
| load := widgets.NewGauge() | ||
| load.Title = "CPU Usage" | ||
| load.Percent = int(cpuPercent.Load()) | ||
| load.BarColor = terminal.ColorMagenta | ||
| load.BorderStyle.Fg = terminal.ColorWhite | ||
| load.TitleStyle.Fg = terminal.ColorCyan | ||
|
|
||
| return load, func() { | ||
| load.Percent = int(cpuPercent.Load()) | ||
| } | ||
| }() | ||
|
|
||
| mem, memDraw := func() (*widgets.Gauge, func()) { | ||
| mem := widgets.NewGauge() | ||
| mem.Title = "Memory Usage" | ||
| usagePercent := 0 | ||
| if memTotal.Load() > 0 { | ||
| usagePercent = int(float64(memUsage.Load()) / float64(memTotal.Load()) * 100) | ||
| } | ||
| mem.Percent = usagePercent | ||
| mem.BarColor = terminal.ColorGreen | ||
| mem.BorderStyle.Fg = terminal.ColorWhite | ||
| mem.TitleStyle.Fg = terminal.ColorCyan | ||
|
|
||
| return mem, func() { | ||
| usagePercent := 0 | ||
| if memTotal.Load() > 0 { | ||
| usagePercent = int(float64(memUsage.Load()) / float64(memTotal.Load()) * 100) | ||
| } | ||
| mem.Percent = usagePercent | ||
| mem.Label = fmt.Sprintf("%d%% | Mem: %s / %s", | ||
| usagePercent, | ||
| humanize.Bytes(memUsage.Load()), | ||
| humanize.Bytes(memTotal.Load()), | ||
| ) | ||
| } | ||
| }() | ||
|
|
||
| disk, diskDraw := func() (*widgets.Gauge, func()) { | ||
| disk := widgets.NewGauge() | ||
| disk.Title = "Disk Usage" | ||
| disk.Percent = int(diskPercent.Load()) | ||
| disk.BarColor = terminal.ColorYellow | ||
| disk.BorderStyle.Fg = terminal.ColorWhite | ||
| disk.TitleStyle.Fg = terminal.ColorCyan | ||
|
|
||
| return disk, func() { | ||
| disk.Percent = int(diskPercent.Load()) | ||
| disk.Label = fmt.Sprintf("%d%% | Disk: %s / %s", | ||
| 0, | ||
| humanize.Bytes(diskUsage.Load()), | ||
| humanize.Bytes(diskTotal.Load()), | ||
| ) | ||
| } | ||
|
Comment on lines
+222
to
+237
|
||
| }() | ||
|
|
||
| metricGrid.Set( | ||
| terminal.NewRow(1.0/2, | ||
| terminal.NewCol(1.0/2, rater), | ||
| terminal.NewCol(1.0/2, | ||
| terminal.NewRow(1.0/3, load), | ||
| terminal.NewRow(1.0/3, mem), | ||
| terminal.NewRow(1.0/3, disk), | ||
| ), | ||
| ), | ||
| ) | ||
|
|
||
| terminal.Render(banner, metricGrid, list) | ||
|
|
||
| uiEvents := terminal.PollEvents() | ||
| ticker := time.NewTicker(time.Second).C | ||
| for { | ||
|
Comment on lines
+253
to
+255
|
||
| select { | ||
| case e := <-uiEvents: | ||
| switch e.ID { | ||
| case "q", "<C-c>": | ||
| return | ||
| } | ||
|
|
||
| switch e.Type { | ||
| case terminal.ResizeEvent: | ||
| payload := e.Payload.(terminal.Resize) | ||
| termWidth = payload.Width | ||
| // termHeight = payload.Height | ||
|
|
||
| banner.SetRect(0, 0, termWidth, 3) | ||
| metricGrid.SetRect(0, 3, termWidth, 20) | ||
| list.SetRect(0, 12, termWidth, 30) | ||
|
|
||
| terminal.Clear() | ||
| terminal.Render(banner, metricGrid, list) | ||
| } | ||
|
|
||
| case <-ticker: | ||
| bannerDraw() | ||
| raterDraw() | ||
| memDraw() | ||
| diskDraw() | ||
| loadDraw() | ||
|
|
||
| terminal.Render(banner, metricGrid, list) | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func filter(s string, _ int) bool { | ||
| if s == "" { | ||
| return false | ||
| } | ||
| return true | ||
| } | ||
|
|
||
| func toMap(s string, i int) string { | ||
| parts := strings.Split(s, "@@") | ||
| if len(parts) != 3 { | ||
| return "" | ||
| } | ||
| return fmt.Sprintf("[%02d] LastAccess=%s %s ReqCount=%s", i, parts[1], parts[0], parts[2]) | ||
| } | ||
|
|
||
| type Graph struct { | ||
| Data map[string]float64 `json:"data"` | ||
| HotUrls []string `json:"hot_urls"` | ||
| StartedAt int64 `json:"started_at"` | ||
| } | ||
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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.