mirror of
https://github.com/hibiken/asynq.git
synced 2025-09-19 13:21:58 +08:00
(cli): Split dash package into multiple files
This commit is contained in:
Ken Hibino
@@ -6,16 +6,11 @@ package dash
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import (
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"fmt"
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"math"
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"math/rand"
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"os"
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"strconv"
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"strings"
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"time"
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"github.com/gdamore/tcell/v2"
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"github.com/hibiken/asynq"
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"github.com/mattn/go-runewidth"
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)
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// viewType is an enum for dashboard views.
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@@ -30,7 +25,8 @@ const (
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viewTypeHelp
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)
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type dashState struct {
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// State holds dashboard state.
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type State struct {
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queues []*asynq.QueueInfo
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redisInfo redisInfo
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err error
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@@ -78,9 +74,9 @@ func Run(opts Options) {
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redisInfoCh = make(chan *redisInfo)
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)
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go getQueueInfo(inspector, queuesCh, errorCh, opts)
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go fetchQueueInfo(inspector, queuesCh, errorCh, opts)
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var state dashState // contained in this goroutine only; do not share
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var state State // contained in this goroutine only; do not share
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// draw initial screen
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drawDash(s, baseStyle, &state, opts)
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@@ -150,7 +146,7 @@ func Run(opts Options) {
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state.view = viewTypeHelp
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drawDash(s, baseStyle, &state, opts)
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} else if ev.Key() == tcell.KeyF1 && state.view != viewTypeQueues {
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go getQueueInfo(inspector, queuesCh, errorCh, opts)
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go fetchQueueInfo(inspector, queuesCh, errorCh, opts)
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ticker.Reset(interval)
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state.view = viewTypeQueues
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drawDash(s, baseStyle, &state, opts)
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@@ -163,7 +159,7 @@ func Run(opts Options) {
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state.view = viewTypeSchedulers
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drawDash(s, baseStyle, &state, opts)
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} else if ev.Key() == tcell.KeyF4 && state.view != viewTypeRedis {
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go getRedisInfo(redisInfoCh, errorCh)
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go fetchRedisInfo(redisInfoCh, errorCh)
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ticker.Reset(interval)
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state.view = viewTypeRedis
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drawDash(s, baseStyle, &state, opts)
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@@ -173,9 +169,9 @@ func Run(opts Options) {
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case <-ticker.C:
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switch state.view {
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case viewTypeQueues:
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go getQueueInfo(inspector, queuesCh, errorCh, opts)
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go fetchQueueInfo(inspector, queuesCh, errorCh, opts)
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case viewTypeRedis:
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go getRedisInfo(redisInfoCh, errorCh)
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go fetchRedisInfo(redisInfoCh, errorCh)
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}
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case queues := <-queuesCh:
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@@ -195,378 +191,3 @@ func Run(opts Options) {
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}
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}
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func getQueueInfo(i *asynq.Inspector, queuesCh chan<- []*asynq.QueueInfo, errorCh chan<- error, opts Options) {
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if !opts.UseRealData {
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n := rand.Intn(100)
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queuesCh <- []*asynq.QueueInfo{
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{Queue: "default", Size: 1800 + n, Pending: 700 + n, Active: 300, Aggregating: 300, Scheduled: 200, Retry: 100, Archived: 200},
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{Queue: "critical", Size: 2300 + n, Pending: 1000 + n, Active: 500, Retry: 400, Completed: 400},
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{Queue: "low", Size: 900 + n, Pending: n, Active: 300, Scheduled: 400, Completed: 200},
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}
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return
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}
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queues, err := i.Queues()
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if err != nil {
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errorCh <- err
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return
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}
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var res []*asynq.QueueInfo
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for _, q := range queues {
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info, err := i.GetQueueInfo(q)
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if err != nil {
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errorCh <- err
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return
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}
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res = append(res, info)
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}
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queuesCh <- res
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}
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func getRedisInfo(redisInfoCh chan<- *redisInfo, errorCh chan<- error) {
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n := rand.Intn(1000)
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redisInfoCh <- &redisInfo{
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version: "6.2.6",
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uptime: "9 days",
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memoryUsage: n,
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peakMemoryUsage: n + 123,
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}
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}
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func drawDash(s tcell.Screen, style tcell.Style, state *dashState, opts Options) {
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s.Clear()
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// Simulate data update on every render
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d := NewScreenDrawer(s)
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switch state.view {
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case viewTypeQueues:
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d.Println("=== Queues ===", style.Bold(true))
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d.NL() // empty line
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drawQueueSizeGraphs(d, style, state)
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d.NL() // empty line
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drawQueueTable(d, style, state)
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case viewTypeQueueDetails:
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d.Println(fmt.Sprintf("=== Queues > %s ===", state.selectedQueue), style)
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d.NL()
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// TODO: draw body
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case viewTypeServers:
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d.Println("=== Servers ===", style.Bold(true))
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d.NL() // empty line
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// TODO: Draw body
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case viewTypeSchedulers:
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d.Println("=== Schedulers === ", style.Bold(true))
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d.NL() // empty line
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// TODO: Draw body
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case viewTypeRedis:
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d.Println("=== Redis Info === ", style.Bold(true))
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d.NL() // empty line
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d.Println(fmt.Sprintf("Version: %s", state.redisInfo.version), style)
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d.Println(fmt.Sprintf("Uptime: %s", state.redisInfo.uptime), style)
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d.Println(fmt.Sprintf("Memory Usage: %s", ByteCount(int64(state.redisInfo.memoryUsage))), style)
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d.Println(fmt.Sprintf("Peak Memory Usage: %s", ByteCount(int64(state.redisInfo.peakMemoryUsage))), style)
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case viewTypeHelp:
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d.Println("=== HELP ===", style.Bold(true))
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d.NL() // empty line
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// TODO: Draw HELP body
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}
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if opts.DebugMode {
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d.Println(fmt.Sprintf("DEBUG: rowIdx = %d", state.rowIdx), style)
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d.Println(fmt.Sprintf("DEBUG: selectedQueue = %s", state.selectedQueue), style)
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d.Println(fmt.Sprintf("DEBUG: view = %v", state.view), style)
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}
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d.GoToBottom()
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drawFooter(d, style, state)
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}
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func drawQueueSizeGraphs(d *ScreenDrawer, style tcell.Style, state *dashState) {
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var (
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activeStyle = tcell.StyleDefault.Foreground(tcell.GetColor("blue")).Background(tcell.ColorReset)
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pendingStyle = tcell.StyleDefault.Foreground(tcell.GetColor("green")).Background(tcell.ColorReset)
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aggregatingStyle = tcell.StyleDefault.Foreground(tcell.GetColor("lightgreen")).Background(tcell.ColorReset)
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scheduledStyle = tcell.StyleDefault.Foreground(tcell.GetColor("yellow")).Background(tcell.ColorReset)
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retryStyle = tcell.StyleDefault.Foreground(tcell.GetColor("pink")).Background(tcell.ColorReset)
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archivedStyle = tcell.StyleDefault.Foreground(tcell.GetColor("purple")).Background(tcell.ColorReset)
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completedStyle = tcell.StyleDefault.Foreground(tcell.GetColor("darkgreen")).Background(tcell.ColorReset)
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)
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var qnames []string
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var qsizes []string // queue size in strings
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maxSize := 1 // not zero to avoid division by zero
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for _, q := range state.queues {
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qnames = append(qnames, q.Queue)
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qsizes = append(qsizes, strconv.Itoa(q.Size))
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if q.Size > maxSize {
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maxSize = q.Size
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}
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}
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qnameWidth := maxwidth(qnames)
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qsizeWidth := maxwidth(qsizes)
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// Calculate the multipler to scale the graph
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screenWidth, _ := d.Screen().Size()
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graphMaxWidth := screenWidth - (qnameWidth + qsizeWidth + 3) // <qname> |<graph> <size>
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multipiler := 1.0
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if graphMaxWidth < maxSize {
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multipiler = float64(graphMaxWidth) / float64(maxSize)
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}
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const tick = '▇'
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for _, q := range state.queues {
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d.Print(q.Queue, style)
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d.Print(strings.Repeat(" ", qnameWidth-runewidth.StringWidth(q.Queue)+1), style) // padding between qname and graph
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d.Print("|", style)
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d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Completed)*multipiler))), completedStyle)
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d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Archived)*multipiler))), archivedStyle)
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d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Retry)*multipiler))), retryStyle)
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d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Scheduled)*multipiler))), scheduledStyle)
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d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Aggregating)*multipiler))), aggregatingStyle)
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d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Pending)*multipiler))), pendingStyle)
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d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Active)*multipiler))), activeStyle)
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d.Print(fmt.Sprintf(" %d", q.Size), style)
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d.NL()
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}
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d.NL()
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d.Print("completed=", style)
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d.Print(string(tick), completedStyle)
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d.Print(" archived=", style)
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d.Print(string(tick), archivedStyle)
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d.Print(" retry=", style)
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d.Print(string(tick), retryStyle)
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d.Print(" scheduled=", style)
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d.Print(string(tick), scheduledStyle)
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d.Print(" aggregating=", style)
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d.Print(string(tick), aggregatingStyle)
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d.Print(" pending=", style)
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d.Print(string(tick), pendingStyle)
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d.Print(" active=", style)
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d.Print(string(tick), activeStyle)
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d.NL()
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}
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func drawFooter(d *ScreenDrawer, baseStyle tcell.Style, state *dashState) {
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if state.err != nil {
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style := baseStyle.Background(tcell.ColorDarkRed)
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d.Print(state.err.Error(), style)
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d.FillLine(' ', style)
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return
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}
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style := baseStyle.Background(tcell.ColorDarkSlateGray)
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switch state.view {
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case viewTypeHelp:
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d.Print("Esc=GoBack", style)
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default:
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type menu struct {
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label string
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view viewType
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}
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menus := []*menu{
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{"F1=Queues", viewTypeQueues},
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{"F2=Servers", viewTypeServers},
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{"F3=Schedulers", viewTypeSchedulers},
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{"F4=Redis", viewTypeRedis},
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{"?=Help", viewTypeHelp},
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}
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var b strings.Builder
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for _, m := range menus {
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b.WriteString(m.label)
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// Add * for the current view
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if m.view == state.view {
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b.WriteString("* ")
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} else {
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b.WriteString(" ")
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}
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}
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d.Print(b.String(), style)
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}
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d.FillLine(' ', style)
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}
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// returns the maximum width from the given list of names
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func maxwidth(names []string) int {
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max := 0
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for _, s := range names {
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if w := runewidth.StringWidth(s); w > max {
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max = w
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}
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}
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return max
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}
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// ByteCount converts the given bytes into human readable string
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func ByteCount(b int64) string {
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const unit = 1000
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if b < unit {
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return fmt.Sprintf("%d B", b)
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}
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div, exp := int64(unit), 0
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for n := b / unit; n >= unit; n /= unit {
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div *= unit
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exp++
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}
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return fmt.Sprintf("%.1f %cB", float64(b)/float64(div), "kMGTPE"[exp])
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}
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func drawQueueTable(d *ScreenDrawer, style tcell.Style, state *dashState) {
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colConfigs := []*columnConfig[*asynq.QueueInfo]{
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{"Queue", alignLeft, func(q *asynq.QueueInfo) string { return q.Queue }},
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{"State", alignLeft, func(q *asynq.QueueInfo) string {
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if q.Paused {
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return "PAUSED"
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} else {
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return "RUN"
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}
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}},
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{"Size", alignRight, func(q *asynq.QueueInfo) string { return strconv.Itoa(q.Size) }},
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{"Latency", alignRight, func(q *asynq.QueueInfo) string { return q.Latency.String() }},
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{"MemoryUsage", alignRight, func(q *asynq.QueueInfo) string { return ByteCount(q.MemoryUsage) }},
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{"Processed", alignRight, func(q *asynq.QueueInfo) string { return strconv.Itoa(q.Processed) }},
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{"Failed", alignRight, func(q *asynq.QueueInfo) string { return strconv.Itoa(q.Failed) }},
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{"ErrorRate", alignRight, func(q *asynq.QueueInfo) string { return "0.23%" /* TODO: implement this */ }},
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}
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drawTable(d, style, colConfigs, state.queues, state.rowIdx-1)
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}
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type columnAlignment int
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const (
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alignRight columnAlignment = iota
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alignLeft
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)
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type columnConfig[V any] struct {
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name string
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alignment columnAlignment
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displayFn func(v V) string
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}
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type column[V any] struct {
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*columnConfig[V]
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width int
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}
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// Helper to draw a table.
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func drawTable[V any](d *ScreenDrawer, style tcell.Style, configs []*columnConfig[V], data []V, highlightRowIdx int) {
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const colBuffer = 4 // extra buffer between columns
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cols := make([]*column[V], len(configs))
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for i, cfg := range configs {
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cols[i] = &column[V]{cfg, runewidth.StringWidth(cfg.name)}
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}
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// adjust the column width to accommodate the widest value.
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for _, v := range data {
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for _, col := range cols {
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if w := runewidth.StringWidth(col.displayFn(v)); col.width < w {
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col.width = w
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}
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}
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}
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// print header
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headerStyle := style.Background(tcell.ColorDimGray).Foreground(tcell.ColorWhite)
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for _, col := range cols {
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if col.alignment == alignLeft {
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d.Print(rpad(col.name, col.width+colBuffer), headerStyle)
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} else {
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d.Print(lpad(col.name, col.width+colBuffer), headerStyle)
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}
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}
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d.FillLine(' ', headerStyle)
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// print body
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for i, v := range data {
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rowStyle := style
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if highlightRowIdx == i {
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rowStyle = style.Background(tcell.ColorDarkOliveGreen)
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}
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for _, col := range cols {
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if col.alignment == alignLeft {
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d.Print(rpad(col.displayFn(v), col.width+colBuffer), rowStyle)
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} else {
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d.Print(lpad(col.displayFn(v), col.width+colBuffer), rowStyle)
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}
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}
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d.FillLine(' ', rowStyle)
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}
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}
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/*** Screen Drawer ***/
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// ScreenDrawer is used to draw contents on screen.
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//
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// Usage example:
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// d := NewScreenDrawer(s)
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// d.Println("Hello world", mystyle)
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// d.NL() // adds newline
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// d.Print("foo", mystyle.Bold(true))
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// d.Print("bar", mystyle.Italic(true))
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type ScreenDrawer struct {
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l *LineDrawer
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}
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func NewScreenDrawer(s tcell.Screen) *ScreenDrawer {
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return &ScreenDrawer{l: NewLineDrawer(0, s)}
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}
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func (d *ScreenDrawer) Print(s string, style tcell.Style) {
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d.l.Draw(s, style)
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}
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func (d *ScreenDrawer) Println(s string, style tcell.Style) {
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d.Print(s, style)
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d.NL()
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}
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// FillLine prints the given rune until the end of the current line
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// and adds a newline.
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func (d *ScreenDrawer) FillLine(r rune, style tcell.Style) {
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w, _ := d.Screen().Size()
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s := strings.Repeat(string(r), w-d.l.col)
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d.Print(s, style)
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d.NL()
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}
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// NL adds a newline (i.e., moves to the next line).
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func (d *ScreenDrawer) NL() {
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d.l.row++
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d.l.col = 0
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}
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func (d *ScreenDrawer) Screen() tcell.Screen {
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return d.l.s
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}
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// Go to the bottom of the screen.
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func (d *ScreenDrawer) GoToBottom() {
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_, h := d.Screen().Size()
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d.l.row = h - 1
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d.l.col = 0
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}
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type LineDrawer struct {
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s tcell.Screen
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row int
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||||
col int
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}
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||||
|
||||
func NewLineDrawer(row int, s tcell.Screen) *LineDrawer {
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||||
return &LineDrawer{row: row, col: 0, s: s}
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}
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func (d *LineDrawer) Draw(s string, style tcell.Style) {
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for _, r := range s {
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d.s.SetContent(d.col, d.row, r, nil, style)
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d.col += runewidth.RuneWidth(r)
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}
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}
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||||
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||||
// rpad adds padding to the right of a string.
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||||
func rpad(s string, padding int) string {
|
||||
tmpl := fmt.Sprintf("%%-%ds ", padding)
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return fmt.Sprintf(tmpl, s)
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||||
|
||||
}
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||||
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// lpad adds padding to the left of a string.
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func lpad(s string, padding int) string {
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tmpl := fmt.Sprintf("%%%ds ", padding)
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return fmt.Sprintf(tmpl, s)
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}
|
||||
|
||||
283
tools/asynq/cmd/dash/draw.go
Normal file
283
tools/asynq/cmd/dash/draw.go
Normal file
@@ -0,0 +1,283 @@
|
||||
// Copyright 2022 Kentaro Hibino. All rights reserved.
|
||||
// Use of this source code is governed by a MIT license
|
||||
// that can be found in the LICENSE file.
|
||||
|
||||
package dash
|
||||
|
||||
import (
|
||||
"fmt"
|
||||
"math"
|
||||
"strconv"
|
||||
"strings"
|
||||
|
||||
"github.com/gdamore/tcell/v2"
|
||||
"github.com/hibiken/asynq"
|
||||
"github.com/mattn/go-runewidth"
|
||||
)
|
||||
|
||||
func drawDash(s tcell.Screen, style tcell.Style, state *State, opts Options) {
|
||||
s.Clear()
|
||||
// Simulate data update on every render
|
||||
d := NewScreenDrawer(s)
|
||||
switch state.view {
|
||||
case viewTypeQueues:
|
||||
d.Println("=== Queues ===", style.Bold(true))
|
||||
d.NL() // empty line
|
||||
drawQueueSizeGraphs(d, style, state)
|
||||
d.NL() // empty line
|
||||
drawQueueTable(d, style, state)
|
||||
case viewTypeQueueDetails:
|
||||
d.Println(fmt.Sprintf("=== Queues > %s ===", state.selectedQueue), style)
|
||||
d.NL()
|
||||
// TODO: draw body
|
||||
case viewTypeServers:
|
||||
d.Println("=== Servers ===", style.Bold(true))
|
||||
d.NL() // empty line
|
||||
// TODO: Draw body
|
||||
case viewTypeSchedulers:
|
||||
d.Println("=== Schedulers === ", style.Bold(true))
|
||||
d.NL() // empty line
|
||||
// TODO: Draw body
|
||||
case viewTypeRedis:
|
||||
d.Println("=== Redis Info === ", style.Bold(true))
|
||||
d.NL() // empty line
|
||||
d.Println(fmt.Sprintf("Version: %s", state.redisInfo.version), style)
|
||||
d.Println(fmt.Sprintf("Uptime: %s", state.redisInfo.uptime), style)
|
||||
d.Println(fmt.Sprintf("Memory Usage: %s", ByteCount(int64(state.redisInfo.memoryUsage))), style)
|
||||
d.Println(fmt.Sprintf("Peak Memory Usage: %s", ByteCount(int64(state.redisInfo.peakMemoryUsage))), style)
|
||||
case viewTypeHelp:
|
||||
d.Println("=== HELP ===", style.Bold(true))
|
||||
d.NL() // empty line
|
||||
// TODO: Draw HELP body
|
||||
}
|
||||
if opts.DebugMode {
|
||||
d.Println(fmt.Sprintf("DEBUG: rowIdx = %d", state.rowIdx), style)
|
||||
d.Println(fmt.Sprintf("DEBUG: selectedQueue = %s", state.selectedQueue), style)
|
||||
d.Println(fmt.Sprintf("DEBUG: view = %v", state.view), style)
|
||||
}
|
||||
d.GoToBottom()
|
||||
drawFooter(d, style, state)
|
||||
}
|
||||
|
||||
func drawQueueSizeGraphs(d *ScreenDrawer, style tcell.Style, state *State) {
|
||||
var (
|
||||
activeStyle = tcell.StyleDefault.Foreground(tcell.GetColor("blue")).Background(tcell.ColorReset)
|
||||
pendingStyle = tcell.StyleDefault.Foreground(tcell.GetColor("green")).Background(tcell.ColorReset)
|
||||
aggregatingStyle = tcell.StyleDefault.Foreground(tcell.GetColor("lightgreen")).Background(tcell.ColorReset)
|
||||
scheduledStyle = tcell.StyleDefault.Foreground(tcell.GetColor("yellow")).Background(tcell.ColorReset)
|
||||
retryStyle = tcell.StyleDefault.Foreground(tcell.GetColor("pink")).Background(tcell.ColorReset)
|
||||
archivedStyle = tcell.StyleDefault.Foreground(tcell.GetColor("purple")).Background(tcell.ColorReset)
|
||||
completedStyle = tcell.StyleDefault.Foreground(tcell.GetColor("darkgreen")).Background(tcell.ColorReset)
|
||||
)
|
||||
|
||||
var qnames []string
|
||||
var qsizes []string // queue size in strings
|
||||
maxSize := 1 // not zero to avoid division by zero
|
||||
for _, q := range state.queues {
|
||||
qnames = append(qnames, q.Queue)
|
||||
qsizes = append(qsizes, strconv.Itoa(q.Size))
|
||||
if q.Size > maxSize {
|
||||
maxSize = q.Size
|
||||
}
|
||||
}
|
||||
qnameWidth := maxwidth(qnames)
|
||||
qsizeWidth := maxwidth(qsizes)
|
||||
|
||||
// Calculate the multipler to scale the graph
|
||||
screenWidth, _ := d.Screen().Size()
|
||||
graphMaxWidth := screenWidth - (qnameWidth + qsizeWidth + 3) // <qname> |<graph> <size>
|
||||
multipiler := 1.0
|
||||
if graphMaxWidth < maxSize {
|
||||
multipiler = float64(graphMaxWidth) / float64(maxSize)
|
||||
}
|
||||
|
||||
const tick = '▇'
|
||||
for _, q := range state.queues {
|
||||
d.Print(q.Queue, style)
|
||||
d.Print(strings.Repeat(" ", qnameWidth-runewidth.StringWidth(q.Queue)+1), style) // padding between qname and graph
|
||||
d.Print("|", style)
|
||||
d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Completed)*multipiler))), completedStyle)
|
||||
d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Archived)*multipiler))), archivedStyle)
|
||||
d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Retry)*multipiler))), retryStyle)
|
||||
d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Scheduled)*multipiler))), scheduledStyle)
|
||||
d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Aggregating)*multipiler))), aggregatingStyle)
|
||||
d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Pending)*multipiler))), pendingStyle)
|
||||
d.Print(strings.Repeat(string(tick), int(math.Floor(float64(q.Active)*multipiler))), activeStyle)
|
||||
d.Print(fmt.Sprintf(" %d", q.Size), style)
|
||||
d.NL()
|
||||
}
|
||||
d.NL()
|
||||
d.Print("completed=", style)
|
||||
d.Print(string(tick), completedStyle)
|
||||
d.Print(" archived=", style)
|
||||
d.Print(string(tick), archivedStyle)
|
||||
d.Print(" retry=", style)
|
||||
d.Print(string(tick), retryStyle)
|
||||
d.Print(" scheduled=", style)
|
||||
d.Print(string(tick), scheduledStyle)
|
||||
d.Print(" aggregating=", style)
|
||||
d.Print(string(tick), aggregatingStyle)
|
||||
d.Print(" pending=", style)
|
||||
d.Print(string(tick), pendingStyle)
|
||||
d.Print(" active=", style)
|
||||
d.Print(string(tick), activeStyle)
|
||||
d.NL()
|
||||
}
|
||||
|
||||
func drawFooter(d *ScreenDrawer, baseStyle tcell.Style, state *State) {
|
||||
if state.err != nil {
|
||||
style := baseStyle.Background(tcell.ColorDarkRed)
|
||||
d.Print(state.err.Error(), style)
|
||||
d.FillLine(' ', style)
|
||||
return
|
||||
}
|
||||
style := baseStyle.Background(tcell.ColorDarkSlateGray)
|
||||
switch state.view {
|
||||
case viewTypeHelp:
|
||||
d.Print("Esc=GoBack", style)
|
||||
default:
|
||||
type menu struct {
|
||||
label string
|
||||
view viewType
|
||||
}
|
||||
menus := []*menu{
|
||||
{"F1=Queues", viewTypeQueues},
|
||||
{"F2=Servers", viewTypeServers},
|
||||
{"F3=Schedulers", viewTypeSchedulers},
|
||||
{"F4=Redis", viewTypeRedis},
|
||||
{"?=Help", viewTypeHelp},
|
||||
}
|
||||
var b strings.Builder
|
||||
for _, m := range menus {
|
||||
b.WriteString(m.label)
|
||||
// Add * for the current view
|
||||
if m.view == state.view {
|
||||
b.WriteString("* ")
|
||||
} else {
|
||||
b.WriteString(" ")
|
||||
}
|
||||
}
|
||||
d.Print(b.String(), style)
|
||||
}
|
||||
d.FillLine(' ', style)
|
||||
}
|
||||
|
||||
// returns the maximum width from the given list of names
|
||||
func maxwidth(names []string) int {
|
||||
max := 0
|
||||
for _, s := range names {
|
||||
if w := runewidth.StringWidth(s); w > max {
|
||||
max = w
|
||||
}
|
||||
}
|
||||
return max
|
||||
}
|
||||
|
||||
// ByteCount converts the given bytes into human readable string
|
||||
func ByteCount(b int64) string {
|
||||
const unit = 1000
|
||||
if b < unit {
|
||||
return fmt.Sprintf("%d B", b)
|
||||
|
||||
}
|
||||
div, exp := int64(unit), 0
|
||||
for n := b / unit; n >= unit; n /= unit {
|
||||
div *= unit
|
||||
exp++
|
||||
|
||||
}
|
||||
return fmt.Sprintf("%.1f %cB", float64(b)/float64(div), "kMGTPE"[exp])
|
||||
}
|
||||
|
||||
func drawQueueTable(d *ScreenDrawer, style tcell.Style, state *State) {
|
||||
colConfigs := []*columnConfig[*asynq.QueueInfo]{
|
||||
{"Queue", alignLeft, func(q *asynq.QueueInfo) string { return q.Queue }},
|
||||
{"State", alignLeft, func(q *asynq.QueueInfo) string {
|
||||
if q.Paused {
|
||||
return "PAUSED"
|
||||
} else {
|
||||
return "RUN"
|
||||
}
|
||||
}},
|
||||
{"Size", alignRight, func(q *asynq.QueueInfo) string { return strconv.Itoa(q.Size) }},
|
||||
{"Latency", alignRight, func(q *asynq.QueueInfo) string { return q.Latency.String() }},
|
||||
{"MemoryUsage", alignRight, func(q *asynq.QueueInfo) string { return ByteCount(q.MemoryUsage) }},
|
||||
{"Processed", alignRight, func(q *asynq.QueueInfo) string { return strconv.Itoa(q.Processed) }},
|
||||
{"Failed", alignRight, func(q *asynq.QueueInfo) string { return strconv.Itoa(q.Failed) }},
|
||||
{"ErrorRate", alignRight, func(q *asynq.QueueInfo) string { return "0.23%" /* TODO: implement this */ }},
|
||||
}
|
||||
drawTable(d, style, colConfigs, state.queues, state.rowIdx-1)
|
||||
}
|
||||
|
||||
type columnAlignment int
|
||||
|
||||
const (
|
||||
alignRight columnAlignment = iota
|
||||
alignLeft
|
||||
)
|
||||
|
||||
type columnConfig[V any] struct {
|
||||
name string
|
||||
alignment columnAlignment
|
||||
displayFn func(v V) string
|
||||
}
|
||||
|
||||
type column[V any] struct {
|
||||
*columnConfig[V]
|
||||
width int
|
||||
}
|
||||
|
||||
// Helper to draw a table.
|
||||
func drawTable[V any](d *ScreenDrawer, style tcell.Style, configs []*columnConfig[V], data []V, highlightRowIdx int) {
|
||||
const colBuffer = 4 // extra buffer between columns
|
||||
cols := make([]*column[V], len(configs))
|
||||
for i, cfg := range configs {
|
||||
cols[i] = &column[V]{cfg, runewidth.StringWidth(cfg.name)}
|
||||
}
|
||||
// adjust the column width to accommodate the widest value.
|
||||
for _, v := range data {
|
||||
for _, col := range cols {
|
||||
if w := runewidth.StringWidth(col.displayFn(v)); col.width < w {
|
||||
col.width = w
|
||||
}
|
||||
}
|
||||
}
|
||||
// print header
|
||||
headerStyle := style.Background(tcell.ColorDimGray).Foreground(tcell.ColorWhite)
|
||||
for _, col := range cols {
|
||||
if col.alignment == alignLeft {
|
||||
d.Print(rpad(col.name, col.width+colBuffer), headerStyle)
|
||||
} else {
|
||||
d.Print(lpad(col.name, col.width+colBuffer), headerStyle)
|
||||
}
|
||||
}
|
||||
d.FillLine(' ', headerStyle)
|
||||
// print body
|
||||
for i, v := range data {
|
||||
rowStyle := style
|
||||
if highlightRowIdx == i {
|
||||
rowStyle = style.Background(tcell.ColorDarkOliveGreen)
|
||||
}
|
||||
for _, col := range cols {
|
||||
if col.alignment == alignLeft {
|
||||
d.Print(rpad(col.displayFn(v), col.width+colBuffer), rowStyle)
|
||||
} else {
|
||||
d.Print(lpad(col.displayFn(v), col.width+colBuffer), rowStyle)
|
||||
}
|
||||
}
|
||||
d.FillLine(' ', rowStyle)
|
||||
}
|
||||
}
|
||||
|
||||
// rpad adds padding to the right of a string.
|
||||
func rpad(s string, padding int) string {
|
||||
tmpl := fmt.Sprintf("%%-%ds ", padding)
|
||||
return fmt.Sprintf(tmpl, s)
|
||||
|
||||
}
|
||||
|
||||
// lpad adds padding to the left of a string.
|
||||
func lpad(s string, padding int) string {
|
||||
tmpl := fmt.Sprintf("%%%ds ", padding)
|
||||
return fmt.Sprintf(tmpl, s)
|
||||
}
|
||||
82
tools/asynq/cmd/dash/drawer.go
Normal file
82
tools/asynq/cmd/dash/drawer.go
Normal file
@@ -0,0 +1,82 @@
|
||||
// Copyright 2022 Kentaro Hibino. All rights reserved.
|
||||
// Use of this source code is governed by a MIT license
|
||||
// that can be found in the LICENSE file.
|
||||
|
||||
package dash
|
||||
|
||||
import (
|
||||
"strings"
|
||||
|
||||
"github.com/gdamore/tcell/v2"
|
||||
"github.com/mattn/go-runewidth"
|
||||
)
|
||||
|
||||
/*** Screen Drawer ***/
|
||||
|
||||
// ScreenDrawer is used to draw contents on screen.
|
||||
//
|
||||
// Usage example:
|
||||
// d := NewScreenDrawer(s)
|
||||
// d.Println("Hello world", mystyle)
|
||||
// d.NL() // adds newline
|
||||
// d.Print("foo", mystyle.Bold(true))
|
||||
// d.Print("bar", mystyle.Italic(true))
|
||||
type ScreenDrawer struct {
|
||||
l *LineDrawer
|
||||
}
|
||||
|
||||
func NewScreenDrawer(s tcell.Screen) *ScreenDrawer {
|
||||
return &ScreenDrawer{l: NewLineDrawer(0, s)}
|
||||
}
|
||||
|
||||
func (d *ScreenDrawer) Print(s string, style tcell.Style) {
|
||||
d.l.Draw(s, style)
|
||||
}
|
||||
|
||||
func (d *ScreenDrawer) Println(s string, style tcell.Style) {
|
||||
d.Print(s, style)
|
||||
d.NL()
|
||||
}
|
||||
|
||||
// FillLine prints the given rune until the end of the current line
|
||||
// and adds a newline.
|
||||
func (d *ScreenDrawer) FillLine(r rune, style tcell.Style) {
|
||||
w, _ := d.Screen().Size()
|
||||
s := strings.Repeat(string(r), w-d.l.col)
|
||||
d.Print(s, style)
|
||||
d.NL()
|
||||
}
|
||||
|
||||
// NL adds a newline (i.e., moves to the next line).
|
||||
func (d *ScreenDrawer) NL() {
|
||||
d.l.row++
|
||||
d.l.col = 0
|
||||
}
|
||||
|
||||
func (d *ScreenDrawer) Screen() tcell.Screen {
|
||||
return d.l.s
|
||||
}
|
||||
|
||||
// Go to the bottom of the screen.
|
||||
func (d *ScreenDrawer) GoToBottom() {
|
||||
_, h := d.Screen().Size()
|
||||
d.l.row = h - 1
|
||||
d.l.col = 0
|
||||
}
|
||||
|
||||
type LineDrawer struct {
|
||||
s tcell.Screen
|
||||
row int
|
||||
col int
|
||||
}
|
||||
|
||||
func NewLineDrawer(row int, s tcell.Screen) *LineDrawer {
|
||||
return &LineDrawer{row: row, col: 0, s: s}
|
||||
}
|
||||
|
||||
func (d *LineDrawer) Draw(s string, style tcell.Style) {
|
||||
for _, r := range s {
|
||||
d.s.SetContent(d.col, d.row, r, nil, style)
|
||||
d.col += runewidth.RuneWidth(r)
|
||||
}
|
||||
}
|
||||
49
tools/asynq/cmd/dash/fetch.go
Normal file
49
tools/asynq/cmd/dash/fetch.go
Normal file
@@ -0,0 +1,49 @@
|
||||
// Copyright 2022 Kentaro Hibino. All rights reserved.
|
||||
// Use of this source code is governed by a MIT license
|
||||
// that can be found in the LICENSE file.
|
||||
|
||||
package dash
|
||||
|
||||
import (
|
||||
"math/rand"
|
||||
|
||||
"github.com/hibiken/asynq"
|
||||
)
|
||||
|
||||
func fetchQueueInfo(i *asynq.Inspector, queuesCh chan<- []*asynq.QueueInfo, errorCh chan<- error, opts Options) {
|
||||
if !opts.UseRealData {
|
||||
n := rand.Intn(100)
|
||||
queuesCh <- []*asynq.QueueInfo{
|
||||
{Queue: "default", Size: 1800 + n, Pending: 700 + n, Active: 300, Aggregating: 300, Scheduled: 200, Retry: 100, Archived: 200},
|
||||
{Queue: "critical", Size: 2300 + n, Pending: 1000 + n, Active: 500, Retry: 400, Completed: 400},
|
||||
{Queue: "low", Size: 900 + n, Pending: n, Active: 300, Scheduled: 400, Completed: 200},
|
||||
}
|
||||
return
|
||||
}
|
||||
queues, err := i.Queues()
|
||||
if err != nil {
|
||||
errorCh <- err
|
||||
return
|
||||
}
|
||||
var res []*asynq.QueueInfo
|
||||
for _, q := range queues {
|
||||
info, err := i.GetQueueInfo(q)
|
||||
if err != nil {
|
||||
errorCh <- err
|
||||
return
|
||||
}
|
||||
res = append(res, info)
|
||||
}
|
||||
queuesCh <- res
|
||||
|
||||
}
|
||||
|
||||
func fetchRedisInfo(redisInfoCh chan<- *redisInfo, errorCh chan<- error) {
|
||||
n := rand.Intn(1000)
|
||||
redisInfoCh <- &redisInfo{
|
||||
version: "6.2.6",
|
||||
uptime: "9 days",
|
||||
memoryUsage: n,
|
||||
peakMemoryUsage: n + 123,
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user