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|
package dashboard
import (
"fmt"
"ior/internal/statsengine"
"path/filepath"
"sort"
"strconv"
"github.com/charmbracelet/bubbles/table"
)
type DirSnapshot struct {
Dir string
Accesses uint64
BytesRead uint64
BytesWritten uint64
AvgLatencyNs float64
MaxLatencyNs uint64
FileCount uint64
}
func renderFiles(snap *statsengine.Snapshot, width, height int) string {
return renderFilesWithOffset(snap, width, height, 0)
}
func renderFilesWithOffset(snap *statsengine.Snapshot, width, height, offset int) string {
if snap == nil {
return "Files: waiting for stats..."
}
pathWidth := filePathWidth(width)
rows := fileRows(snap.Files(), pathWidth)
if len(rows) == 0 {
return "Files: no data"
}
columns := []table.Column{
{Title: "Accesses", Width: 8},
{Title: "Read", Width: 9},
{Title: "Write", Width: 9},
{Title: "Avg Latency", Width: 11},
{Title: "Max Latency", Width: 11},
{Title: "Path", Width: pathWidth},
}
tbl := table.New(
table.WithColumns(columns),
table.WithRows(rows),
table.WithFocused(true),
)
tbl.SetHeight(syscallTableHeight(height))
tbl.SetWidth(tableWidth(width))
cursor := clampOffset(offset, len(rows))
tbl.SetCursor(cursor)
return tbl.View() + fmt.Sprintf("\nRow %d/%d [d:dirs]", cursor+1, len(rows))
}
func renderFilesDirGrouped(snap *statsengine.Snapshot, width, height, offset int) string {
if snap == nil {
return "Files (dirs): waiting for stats..."
}
pathWidth := dirPathWidth(width)
rows := dirRows(aggregateFilesByDir(snap.Files()), pathWidth)
if len(rows) == 0 {
return "Files (dirs): no data"
}
columns := []table.Column{
{Title: "Accesses", Width: 8},
{Title: "Read", Width: 9},
{Title: "Write", Width: 9},
{Title: "Avg Latency", Width: 11},
{Title: "Max Latency", Width: 11},
{Title: "Files", Width: 5},
{Title: "Directory", Width: pathWidth},
}
tbl := table.New(
table.WithColumns(columns),
table.WithRows(rows),
table.WithFocused(true),
)
tbl.SetHeight(syscallTableHeight(height))
tbl.SetWidth(tableWidth(width))
cursor := clampOffset(offset, len(rows))
tbl.SetCursor(cursor)
return tbl.View() + fmt.Sprintf("\nRow %d/%d [d:files]", cursor+1, len(rows))
}
func fileRows(files []statsengine.FileSnapshot, pathWidth int) []table.Row {
rows := make([]table.Row, 0, len(files))
for _, f := range files {
rows = append(rows, table.Row{
strconv.FormatUint(f.Accesses, 10),
formatBytes(float64(f.BytesRead)),
formatBytes(float64(f.BytesWritten)),
formatDurationNs(f.AvgLatencyNs),
formatDurationUintNs(f.MaxLatencyNs),
truncatePathMiddle(f.Path, pathWidth),
})
}
return rows
}
func filePathWidth(width int) int {
if width <= 0 {
return 24
}
// Keep fixed metrics visible and let path consume the remaining space.
// Fixed columns sum to 48 chars; reserve extra for separators/padding.
w := width - 58
if w < 14 {
return 14
}
return w
}
func dirPathWidth(width int) int {
if width <= 0 {
return 24
}
// Directory view adds a 5-char Files column (+1 spacing), so reserve 6 more.
w := width - 64
if w < 14 {
return 14
}
return w
}
func truncatePathMiddle(path string, limit int) string {
if len(path) <= limit {
return path
}
if limit <= 3 {
return path[:limit]
}
head := (limit - 3) / 2
tail := limit - 3 - head
if tail <= 0 {
return path[:limit]
}
return path[:head] + "..." + path[len(path)-tail:]
}
func aggregateFilesByDir(files []statsengine.FileSnapshot) []DirSnapshot {
if len(files) == 0 {
return nil
}
dirs := make(map[string]DirSnapshot, len(files))
weightedLatency := make(map[string]float64, len(files))
for _, f := range files {
dir := filepath.Dir(f.Path)
s := dirs[dir]
s.Dir = dir
s.Accesses += f.Accesses
s.BytesRead += f.BytesRead
s.BytesWritten += f.BytesWritten
if f.MaxLatencyNs > s.MaxLatencyNs {
s.MaxLatencyNs = f.MaxLatencyNs
}
s.FileCount++
weightedLatency[dir] += f.AvgLatencyNs * float64(f.Accesses)
dirs[dir] = s
}
out := make([]DirSnapshot, 0, len(dirs))
for dir, s := range dirs {
if s.Accesses > 0 {
s.AvgLatencyNs = weightedLatency[dir] / float64(s.Accesses)
}
out = append(out, s)
}
sort.Slice(out, func(i, j int) bool {
if out[i].Accesses != out[j].Accesses {
return out[i].Accesses > out[j].Accesses
}
return out[i].Dir < out[j].Dir
})
return out
}
func dirRows(dirs []DirSnapshot, pathWidth int) []table.Row {
rows := make([]table.Row, 0, len(dirs))
for _, d := range dirs {
rows = append(rows, table.Row{
strconv.FormatUint(d.Accesses, 10),
formatBytes(float64(d.BytesRead)),
formatBytes(float64(d.BytesWritten)),
formatDurationNs(d.AvgLatencyNs),
formatDurationUintNs(d.MaxLatencyNs),
strconv.FormatUint(d.FileCount, 10),
truncatePathMiddle(d.Dir, pathWidth),
})
}
return rows
}
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