475 lines
11 KiB
Go
475 lines
11 KiB
Go
package views
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import (
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"encoding/csv"
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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"time"
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"github.com/derailed/k9s/internal/config"
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"github.com/derailed/k9s/internal/resource"
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"github.com/derailed/tview"
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"github.com/gdamore/tcell"
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"github.com/rs/zerolog/log"
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"k8s.io/apimachinery/pkg/util/duration"
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)
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const (
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titleFmt = "[fg:bg:b] %s[fg:bg:-][[count:bg:b]%d[fg:bg:-]] "
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searchFmt = "<[filter:bg:b]/%s[fg:bg:]> "
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nsTitleFmt = "[fg:bg:b] %s([hilite:bg:b]%s[fg:bg:-])[fg:bg:-][[count:bg:b]%d[fg:bg:-]][fg:bg:-] "
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labelSelIndicator = "-l"
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)
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var (
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cpuRX = regexp.MustCompile(`\A.{0,1}CPU`)
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memRX = regexp.MustCompile(`\A.{0,1}MEM`)
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)
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type (
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sortFn func(rows resource.Rows, sortCol sortColumn)
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cleanseFn func(string) string
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sortColumn struct {
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index int
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colCount int
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asc bool
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}
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resTable struct {
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*tview.Table
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app *appView
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baseTitle string
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currentNS string
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data resource.TableData
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actions keyActions
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}
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tableView struct {
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*resTable
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cmdBuff *cmdBuff
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colorerFn colorerFn
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sortFn sortFn
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cleanseFn cleanseFn
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filterFn func(string)
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sortCol sortColumn
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}
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)
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func newTableView(app *appView, title string) *tableView {
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v := tableView{
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resTable: &resTable{
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Table: tview.NewTable(),
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app: app,
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actions: make(keyActions),
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baseTitle: title,
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},
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sortCol: sortColumn{0, 0, true},
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cmdBuff: newCmdBuff('/'),
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}
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v.SetFixed(1, 0)
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v.SetBorder(true)
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v.SetBackgroundColor(config.AsColor(app.styles.Table().BgColor))
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v.SetBorderColor(config.AsColor(app.styles.Table().FgColor))
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v.SetBorderFocusColor(config.AsColor(app.styles.Frame().Border.FocusColor))
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v.SetBorderAttributes(tcell.AttrBold)
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v.SetBorderPadding(0, 0, 1, 1)
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v.cmdBuff.addListener(app.cmd())
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v.cmdBuff.reset()
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v.SetSelectable(true, false)
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v.SetSelectedStyle(
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tcell.ColorBlack,
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config.AsColor(app.styles.Table().CursorColor),
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tcell.AttrBold,
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)
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v.SetInputCapture(v.keyboard)
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v.bindKeys()
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return &v
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}
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func (v *tableView) filterChanged(fn func(string)) {
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v.filterFn = fn
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}
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func (v *tableView) bindKeys() {
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v.actions[tcell.KeyCtrlS] = newKeyAction("Save", v.saveCmd, true)
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v.actions[KeySlash] = newKeyAction("Filter Mode", v.activateCmd, false)
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v.actions[tcell.KeyEscape] = newKeyAction("Filter Reset", v.resetCmd, false)
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v.actions[tcell.KeyEnter] = newKeyAction("Filter", v.filterCmd, false)
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v.actions[tcell.KeyBackspace2] = newKeyAction("Erase", v.eraseCmd, false)
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v.actions[tcell.KeyBackspace] = newKeyAction("Erase", v.eraseCmd, false)
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v.actions[tcell.KeyDelete] = newKeyAction("Erase", v.eraseCmd, false)
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v.actions[KeyShiftI] = newKeyAction("Invert", v.sortInvertCmd, false)
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v.actions[KeyShiftN] = newKeyAction("Sort Name", v.sortColCmd(0), true)
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v.actions[KeyShiftA] = newKeyAction("Sort Age", v.sortColCmd(-1), true)
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}
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func (v *tableView) clearSelection() {
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v.Select(0, 0)
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v.ScrollToBeginning()
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}
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func (v *tableView) keyboard(evt *tcell.EventKey) *tcell.EventKey {
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key := evt.Key()
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if key == tcell.KeyRune {
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if v.cmdBuff.isActive() {
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v.cmdBuff.add(evt.Rune())
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v.clearSelection()
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v.doUpdate(v.filtered())
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v.selectFirstRow()
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return nil
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}
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key = tcell.Key(evt.Rune())
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if evt.Modifiers() == tcell.ModAlt {
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key = tcell.Key(int16(evt.Rune()) * int16(evt.Modifiers()))
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}
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}
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if a, ok := v.actions[key]; ok {
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log.Debug().Msgf(">> TableView handled %s", tcell.KeyNames[key])
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return a.action(evt)
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}
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return evt
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}
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func (v *tableView) selectFirstRow() {
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if v.GetRowCount() > 0 {
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v.Select(1, 0)
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}
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}
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const (
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fullFmat = "%s-%s-%d.csv"
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noNSFmat = "%s-%d.csv"
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)
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func (v *tableView) saveCmd(evt *tcell.EventKey) *tcell.EventKey {
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dir := filepath.Join(config.K9sDumpDir, v.app.config.K9s.CurrentCluster)
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if err := os.MkdirAll(dir, 0744); err != nil {
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log.Error().Err(err).Msgf("Mkdir K9s dump")
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return nil
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}
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ns, now := v.data.Namespace, time.Now().UnixNano()
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if ns == resource.AllNamespaces {
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ns = resource.AllNamespace
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}
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fName := fmt.Sprintf(fullFmat, v.baseTitle, ns, now)
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if ns == resource.NotNamespaced {
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fName = fmt.Sprintf(noNSFmat, v.baseTitle, now)
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}
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path := filepath.Join(dir, fName)
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mod := os.O_CREATE | os.O_APPEND | os.O_WRONLY
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file, err := os.OpenFile(path, mod, 0644)
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defer func() {
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if file != nil {
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file.Close()
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}
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}()
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if err != nil {
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log.Error().Err(err).Msgf("CSV create %s", path)
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return nil
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}
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w := csv.NewWriter(file)
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w.Write(v.data.Header)
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for _, r := range v.data.Rows {
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w.Write(r.Fields)
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}
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w.Flush()
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if err := w.Error(); err != nil {
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log.Error().Err(err).Msgf("Screen dump %s", v.baseTitle)
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}
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v.app.flash().infof("File %s saved successfully!", path)
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log.Debug().Msgf("File %s saved successfully!", path)
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return nil
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}
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func (v *tableView) filterCmd(evt *tcell.EventKey) *tcell.EventKey {
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if v.cmdBuff.isActive() {
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v.cmdBuff.setActive(false)
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cmd := v.cmdBuff.String()
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if isLabelSelector(cmd) && v.filterFn != nil {
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v.filterFn(trimLabelSelector(cmd))
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return nil
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}
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v.refresh()
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return nil
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}
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return evt
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}
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func (v *tableView) eraseCmd(evt *tcell.EventKey) *tcell.EventKey {
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if v.cmdBuff.isActive() {
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v.cmdBuff.del()
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}
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return nil
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}
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func (v *tableView) resetCmd(evt *tcell.EventKey) *tcell.EventKey {
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if !v.cmdBuff.empty() {
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v.app.flash().info("Clearing filter...")
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}
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if isLabelSelector(v.cmdBuff.String()) {
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v.filterFn("")
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}
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v.cmdBuff.reset()
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v.refresh()
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return nil
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}
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func (v *tableView) nameColIndex() int {
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col := 0
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if v.currentNS == resource.AllNamespaces {
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col++
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}
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return col
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}
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func (v *tableView) sortColCmd(col int) func(evt *tcell.EventKey) *tcell.EventKey {
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return func(evt *tcell.EventKey) *tcell.EventKey {
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if col == -1 {
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v.sortCol.index, v.sortCol.asc = v.GetColumnCount()-1, true
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} else {
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v.sortCol.index, v.sortCol.asc = v.nameColIndex()+col, true
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}
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v.refresh()
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return nil
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}
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}
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func (v *tableView) sortNamespaceCmd(evt *tcell.EventKey) *tcell.EventKey {
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v.sortCol.index, v.sortCol.asc = 0, true
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v.refresh()
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return nil
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}
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func (v *tableView) sortInvertCmd(evt *tcell.EventKey) *tcell.EventKey {
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v.sortCol.asc = !v.sortCol.asc
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v.refresh()
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return nil
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}
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func (v *tableView) activateCmd(evt *tcell.EventKey) *tcell.EventKey {
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if v.app.inCmdMode() {
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return evt
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}
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v.app.flash().info("Filter mode activated.")
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if isLabelSelector(v.cmdBuff.String()) {
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return nil
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}
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v.cmdBuff.reset()
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v.cmdBuff.setActive(true)
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return nil
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}
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func (v *tableView) setDeleted() {
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r, _ := v.GetSelection()
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cols := v.GetColumnCount()
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for x := 0; x < cols; x++ {
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v.GetCell(r, x).SetAttributes(tcell.AttrDim)
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}
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}
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// SetColorer sets up table row color management.
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func (v *tableView) setColorer(f colorerFn) {
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v.colorerFn = f
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}
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// SetActions sets up keyboard action listener.
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func (v *tableView) setActions(aa keyActions) {
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for k, a := range aa {
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v.actions[k] = a
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}
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}
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// Hints options
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func (v *tableView) hints() hints {
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if v.actions != nil {
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return v.actions.toHints()
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}
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return nil
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}
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func (v *tableView) refresh() {
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v.update(v.data)
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}
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// Update table content
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func (v *tableView) update(data resource.TableData) {
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v.data = data
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if !v.cmdBuff.empty() {
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v.doUpdate(v.filtered())
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} else {
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v.doUpdate(v.data)
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}
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v.resetTitle()
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}
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func (v *tableView) filtered() resource.TableData {
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if v.cmdBuff.empty() || isLabelSelector(v.cmdBuff.String()) {
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return v.data
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}
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rx, err := regexp.Compile(`(?i)` + v.cmdBuff.String())
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if err != nil {
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v.app.flash().err(errors.New("Invalid filter expression"))
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v.cmdBuff.clear()
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return v.data
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}
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filtered := resource.TableData{
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Header: v.data.Header,
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Rows: resource.RowEvents{},
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Namespace: v.data.Namespace,
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}
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for k, row := range v.data.Rows {
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f := strings.Join(row.Fields, " ")
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if rx.MatchString(f) {
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filtered.Rows[k] = row
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}
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}
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return filtered
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}
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func (v *tableView) doUpdate(data resource.TableData) {
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v.currentNS = data.Namespace
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if v.currentNS == resource.AllNamespaces && v.currentNS != "*" {
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v.actions[KeyShiftP] = newKeyAction("Sort Namespace", v.sortNamespaceCmd, true)
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} else {
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delete(v.actions, KeyShiftP)
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}
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v.Clear()
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// Going from namespace to non namespace or vice-versa?
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switch {
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case v.sortCol.colCount == 0:
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case len(data.Header) > v.sortCol.colCount:
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v.sortCol.index++
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case len(data.Header) < v.sortCol.colCount:
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v.sortCol.index--
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}
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v.sortCol.colCount = len(data.Header)
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if v.sortCol.index < 0 {
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v.sortCol.index = 0
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}
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pads := make(maxyPad, len(data.Header))
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computeMaxColumns(pads, v.sortCol.index, data)
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var row int
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fg := config.AsColor(v.app.styles.Table().Header.FgColor)
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bg := config.AsColor(v.app.styles.Table().Header.BgColor)
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for col, h := range data.Header {
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v.addHeaderCell(data.NumCols[h], col, h)
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c := v.GetCell(0, col)
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c.SetBackgroundColor(bg)
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c.SetTextColor(fg)
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}
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row++
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sortFn := defaultSort
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if v.sortFn != nil {
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sortFn = v.sortFn
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}
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prim, sec := sortAllRows(v.sortCol, data.Rows, sortFn)
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fgColor := config.AsColor(v.app.styles.Table().FgColor)
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for _, pk := range prim {
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for _, sk := range sec[pk] {
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if v.colorerFn != nil {
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fgColor = v.colorerFn(data.Namespace, data.Rows[sk])
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}
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for col, field := range data.Rows[sk].Fields {
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header := data.Header[col]
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field, align := v.formatCell(data.NumCols[header], header, field+deltas(data.Rows[sk].Deltas[col], field), pads[col])
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c := tview.NewTableCell(field)
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{
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c.SetExpansion(1)
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c.SetAlign(align)
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c.SetTextColor(fgColor)
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}
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v.SetCell(row, col, c)
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}
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row++
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}
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}
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}
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func (v *tableView) addHeaderCell(numerical bool, col int, name string) {
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c := tview.NewTableCell(sortIndicator(v.sortCol, v.app.styles.Table(), col, name))
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c.SetExpansion(1)
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if numerical || cpuRX.MatchString(name) || memRX.MatchString(name) {
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c.SetAlign(tview.AlignRight)
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}
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v.SetCell(0, col, c)
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}
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func (v *tableView) formatCell(numerical bool, header, field string, padding int) (string, int) {
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if header == "AGE" {
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dur, err := time.ParseDuration(field)
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if err == nil {
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field = duration.HumanDuration(dur)
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}
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}
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if numerical || cpuRX.MatchString(header) || memRX.MatchString(header) {
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return field, tview.AlignRight
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}
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align := tview.AlignLeft
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if isASCII(field) {
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return pad(field, padding), align
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}
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return field, align
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}
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func (v *tableView) resetTitle() {
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var title string
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rc := v.GetRowCount()
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if rc > 0 {
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rc--
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}
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switch v.currentNS {
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case resource.NotNamespaced, "*":
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title = skinTitle(fmt.Sprintf(titleFmt, v.baseTitle, rc), v.app.styles.Frame())
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default:
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ns := v.currentNS
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if ns == resource.AllNamespaces {
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ns = resource.AllNamespace
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}
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title = skinTitle(fmt.Sprintf(nsTitleFmt, v.baseTitle, ns, rc), v.app.styles.Frame())
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}
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if !v.cmdBuff.isActive() && !v.cmdBuff.empty() {
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cmd := v.cmdBuff.String()
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if isLabelSelector(cmd) {
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cmd = trimLabelSelector(cmd)
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}
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title += skinTitle(fmt.Sprintf(searchFmt, cmd), v.app.styles.Frame())
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}
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v.SetTitle(title)
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}
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