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|
package eventstream
import (
"fmt"
"ior/internal/tui/common"
"strconv"
"strings"
)
type columnLayout struct {
gap int
latency int
comm int
pidTid int
syscall int
ret int
bytes int
file int
}
func RenderStreamTable(width int, paused bool, totalCount, filteredCount, bufferLen, bufferCap int, filter Filter, events []StreamEvent) string {
if width <= 0 {
width = 100
}
contentWidth := panelContentWidth(width)
lines := make([]string, 0, len(events)+3)
lines = append(lines, renderStatusLine(paused, totalCount, filteredCount, bufferLen, bufferCap))
lines = append(lines, renderFilterLine(filter))
lines = append(lines, renderColumnHeader(contentWidth))
for _, ev := range events {
lines = append(lines, renderEventRow(ev, contentWidth))
}
return common.PanelStyle.Width(width).Render(strings.Join(lines, "\n"))
}
func renderStatusLine(paused bool, totalCount, filteredCount, bufferLen, bufferCap int) string {
state := common.HighlightStyle.Render("LIVE")
if paused {
state = common.ErrorStyle.Render("PAUSED")
}
buffer := strconv.Itoa(bufferLen)
if bufferCap > 0 {
buffer = fmt.Sprintf("%d/%d", bufferLen, bufferCap)
}
return fmt.Sprintf("%s | total:%d filtered:%d buffer:%s", state, totalCount, filteredCount, buffer)
}
func renderFilterLine(filter Filter) string {
summary := filter.Summary()
if summary == "all" {
summary = common.HighlightStyle.Render(summary)
}
return common.HeaderStyle.Render("Filter:") + " " + summary
}
func renderColumnHeader(width int) string {
cols := computeColumnLayout(width)
header := fmt.Sprintf("%-*s %-*s %-*s %-*s %-*s %-*s %-*s %s",
cols.gap, "Gap",
cols.latency, "Latency",
cols.comm, "Comm",
cols.pidTid, "PID.TID",
cols.syscall, "Syscall",
cols.ret, "Ret",
cols.bytes, "Bytes",
"File",
)
return common.HelpBarStyle.Render(header)
}
func renderEventRow(ev StreamEvent, width int) string {
cols := computeColumnLayout(width)
pidTid := fmt.Sprintf("%d.%d", ev.PID, ev.TID)
row := fmt.Sprintf("%-*s %-*s %-*s %-*s %-*s %-*s %-*s %s",
cols.gap, fitCell(formatDurationNs(ev.GapNs), cols.gap),
cols.latency, fitCell(formatDurationNs(ev.DurationNs), cols.latency),
cols.comm, fitCell(ev.Comm, cols.comm),
cols.pidTid, fitCell(pidTid, cols.pidTid),
cols.syscall, fitCell(ev.Syscall, cols.syscall),
cols.ret, fitCell(strconv.FormatInt(ev.RetVal, 10), cols.ret),
cols.bytes, fitCell(strconv.FormatUint(ev.Bytes, 10), cols.bytes),
fitCell(ev.FileName, cols.file),
)
if ev.IsError {
return common.ErrorStyle.Render(row)
}
return row
}
func computeColumnLayout(width int) columnLayout {
if width <= 0 {
width = 100
}
// Keep non-file columns compact so file paths can use most of the row.
gap := 7
latency := 8
comm := 10
pidTid := 10
syscall := 9
ret := 5
bytes := 8
fixed := gap + latency + comm + pidTid + syscall + ret + bytes + 7
file := width - fixed
if file >= 28 {
// On wider terminals, give a little more room back to descriptive columns.
if width >= 140 {
comm = 12
syscall = 11
pidTid = 11
fixed = gap + latency + comm + pidTid + syscall + ret + bytes + 7
file = width - fixed
}
return columnLayout{gap: gap, latency: latency, comm: comm, pidTid: pidTid, syscall: syscall, ret: ret, bytes: bytes, file: file}
}
// Very narrow widths: compress further but keep file column readable.
comm = 8
pidTid = 9
syscall = 8
ret = 4
bytes = 7
fixed = gap + latency + comm + pidTid + syscall + ret + bytes + 7
file = width - fixed
if file < 12 {
file = 12
}
return columnLayout{gap: gap, latency: latency, comm: comm, pidTid: pidTid, syscall: syscall, ret: ret, bytes: bytes, file: file}
}
func formatDurationNs(v uint64) string {
if v < 1000 {
return fmt.Sprintf("%dns", v)
}
us := float64(v) / 1000
if us < 1000 {
return fmt.Sprintf("%.1fus", us)
}
ms := us / 1000
if ms < 1000 {
return fmt.Sprintf("%.1fms", ms)
}
s := ms / 1000
return fmt.Sprintf("%.2fs", s)
}
func truncateMiddle(path string, limit int) string {
if limit <= 0 {
return ""
}
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 fitCell(s string, width int) string {
return truncateMiddle(sanitizeOneLine(s), width)
}
func sanitizeOneLine(s string) string {
s = strings.ReplaceAll(s, "\n", " ")
s = strings.ReplaceAll(s, "\r", " ")
s = strings.ReplaceAll(s, "\t", " ")
return s
}
func panelContentWidth(width int) int {
// common.PanelStyle uses 1-char border on each side and 1-char horizontal
// padding on each side: subtract 4 from total width for content.
inner := width - 4
if inner < 20 {
return 20
}
return inner
}
|
