460 lines
11 KiB
Go
460 lines
11 KiB
Go
package view
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import (
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"context"
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"errors"
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"fmt"
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"strconv"
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"time"
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"github.com/derailed/k9s/internal"
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"github.com/derailed/k9s/internal/client"
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"github.com/derailed/k9s/internal/config"
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"github.com/derailed/k9s/internal/dao"
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"github.com/derailed/k9s/internal/render"
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"github.com/derailed/k9s/internal/ui"
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"github.com/derailed/k9s/internal/ui/dialog"
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"github.com/gdamore/tcell"
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"github.com/rs/zerolog/log"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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)
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// Browser represents a generic resource browser.
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type Browser struct {
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*Table
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namespaces map[int]string
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meta metav1.APIResource
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accessor dao.Accessor
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contextFn ContextFunc
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cancelFn context.CancelFunc
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}
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// NewBrowser returns a new browser.
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func NewBrowser(gvr client.GVR) ResourceViewer {
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return &Browser{
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Table: NewTable(gvr),
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}
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}
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// Init watches all running pods in given namespace
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func (b *Browser) Init(ctx context.Context) error {
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var err error
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b.meta, err = dao.MetaFor(b.gvr)
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if err != nil {
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return err
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}
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b.BaseTitle = b.meta.Kind
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if err = b.Table.Init(ctx); err != nil {
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return err
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}
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ns := client.CleanseNamespace(b.app.Config.ActiveNamespace())
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if dao.IsK8sMeta(b.meta) && b.app.ConOK() {
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if _, e := b.app.factory.CanForResource(ns, b.GVR(), client.MonitorAccess); e != nil {
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return e
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}
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}
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b.bindKeys()
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if b.bindKeysFn != nil {
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b.bindKeysFn(b.Actions())
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}
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b.accessor, err = dao.AccessorFor(b.app.factory, b.gvr)
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if err != nil {
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return err
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}
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b.setNamespace(ns)
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row, _ := b.GetSelection()
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if row == 0 && b.GetRowCount() > 0 {
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b.Select(1, 0)
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}
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b.GetModel().AddListener(b)
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b.GetModel().SetRefreshRate(time.Duration(b.App().Config.K9s.GetRefreshRate()) * time.Second)
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return nil
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}
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func (b *Browser) bindKeys() {
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b.Actions().Add(ui.KeyActions{
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tcell.KeyEscape: ui.NewSharedKeyAction("Filter Reset", b.resetCmd, false),
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tcell.KeyEnter: ui.NewSharedKeyAction("Filter", b.filterCmd, false),
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})
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}
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// SetInstance sets a single instance view.
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func (b *Browser) SetInstance(path string) {
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b.GetModel().SetInstance(path)
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}
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// Start initializes browser updates.
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func (b *Browser) Start() {
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b.Stop()
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log.Debug().Msgf("BROWSER started!")
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b.Table.Start()
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ctx := b.defaultContext()
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ctx, b.cancelFn = context.WithCancel(ctx)
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if b.contextFn != nil {
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ctx = b.contextFn(ctx)
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}
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if path, ok := ctx.Value(internal.KeyPath).(string); ok && path != "" {
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b.Path = path
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}
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b.GetModel().Watch(ctx)
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}
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// Stop terminates browser updates.
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func (b *Browser) Stop() {
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if b.cancelFn == nil {
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return
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}
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log.Debug().Msgf("BROWSER Stopped!")
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b.Table.Stop()
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b.cancelFn()
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b.cancelFn = nil
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}
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func (b *Browser) refresh() {
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b.Start()
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}
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// Name returns the component name.
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func (b *Browser) Name() string { return b.meta.Kind }
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// SetContextFn populates a custom context.
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func (b *Browser) SetContextFn(f ContextFunc) { b.contextFn = f }
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// GetTable returns the underlying table.
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func (b *Browser) GetTable() *Table { return b.Table }
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// Aliases returns all available aliases.
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func (b *Browser) Aliases() []string {
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return append(b.meta.ShortNames, b.meta.SingularName, b.meta.Name)
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}
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// ----------------------------------------------------------------------------
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// Model Protocol...
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// TableDataChanged notifies view new data is available.
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func (b *Browser) TableDataChanged(data render.TableData) {
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if !b.app.ConOK() {
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return
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}
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b.app.QueueUpdateDraw(func() {
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b.refreshActions()
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b.Update(data)
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b.App().ClearStatus(false)
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})
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}
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// TableLoadFailed notifies view something went south.
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func (b *Browser) TableLoadFailed(err error) {
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b.app.QueueUpdateDraw(func() {
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b.app.Flash().Err(err)
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b.App().ClearStatus(false)
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})
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}
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// ----------------------------------------------------------------------------
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// Actions...
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func (b *Browser) viewCmd(evt *tcell.EventKey) *tcell.EventKey {
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path := b.GetSelectedItem()
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if path == "" {
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return evt
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}
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ctx := b.defaultContext()
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raw, err := b.GetModel().ToYAML(ctx, path)
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if err != nil {
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b.App().Flash().Errf("unable to get resource %q -- %s", b.gvr, err)
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return nil
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}
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details := NewDetails(b.app, "YAML", path).Update(raw)
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if err := b.App().inject(details); err != nil {
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b.App().Flash().Err(err)
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}
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return nil
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}
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func (b *Browser) resetCmd(evt *tcell.EventKey) *tcell.EventKey {
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if !b.SearchBuff().InCmdMode() {
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b.SearchBuff().Reset()
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return b.App().PrevCmd(evt)
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}
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cmd := b.SearchBuff().String()
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b.App().Flash().Info("Clearing filter...")
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b.SearchBuff().Reset()
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if ui.IsLabelSelector(cmd) {
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b.Start()
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} else {
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b.Refresh()
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}
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return nil
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}
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func (b *Browser) filterCmd(evt *tcell.EventKey) *tcell.EventKey {
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if !b.SearchBuff().IsActive() {
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return evt
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}
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b.SearchBuff().SetActive(false)
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cmd := b.SearchBuff().String()
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if ui.IsLabelSelector(cmd) {
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b.Start()
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return nil
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}
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b.Refresh()
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return nil
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}
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func (b *Browser) enterCmd(evt *tcell.EventKey) *tcell.EventKey {
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path := b.GetSelectedItem()
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if b.filterCmd(evt) == nil || path == "" {
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return nil
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}
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f := describeResource
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if b.enterFn != nil {
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f = b.enterFn
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}
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f(b.app, b.GetModel(), b.gvr.String(), path)
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return nil
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}
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func (b *Browser) refreshCmd(*tcell.EventKey) *tcell.EventKey {
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b.app.Flash().Info("Refreshing...")
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b.refresh()
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return nil
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}
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func (b *Browser) deleteCmd(evt *tcell.EventKey) *tcell.EventKey {
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selections := b.GetSelectedItems()
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if len(selections) == 0 {
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return evt
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}
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b.Stop()
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defer b.Start()
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{
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msg := fmt.Sprintf("Delete %s %s?", b.gvr.R(), selections[0])
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if len(selections) > 1 {
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msg = fmt.Sprintf("Delete %d marked %s?", len(selections), b.gvr)
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}
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if !dao.IsK8sMeta(b.meta) {
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b.simpleDelete(selections, msg)
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return nil
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}
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b.resourceDelete(selections, msg)
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}
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return nil
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}
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func (b *Browser) describeCmd(evt *tcell.EventKey) *tcell.EventKey {
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path := b.GetSelectedItem()
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if path == "" {
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return evt
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}
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describeResource(b.app, b.GetModel(), b.gvr.String(), path)
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return nil
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}
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func (b *Browser) editCmd(evt *tcell.EventKey) *tcell.EventKey {
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path := b.GetSelectedItem()
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if path == "" {
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return evt
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}
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b.Stop()
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defer b.Start()
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{
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ns, n := client.Namespaced(path)
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args := make([]string, 0, 10)
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args = append(args, "edit")
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args = append(args, b.meta.SingularName)
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args = append(args, "-n", ns)
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args = append(args, "--context", b.app.Config.K9s.CurrentContext)
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if cfg := b.app.Conn().Config().Flags().KubeConfig; cfg != nil && *cfg != "" {
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args = append(args, "--kubeconfig", *cfg)
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}
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if !runK(true, b.app, append(args, n)...) {
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b.app.Flash().Err(errors.New("Edit exec failed"))
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}
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}
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return evt
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}
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func (b *Browser) switchNamespaceCmd(evt *tcell.EventKey) *tcell.EventKey {
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i, err := strconv.Atoi(string(evt.Rune()))
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if err != nil {
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log.Error().Err(err).Msgf("Fail to switch namespace")
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return nil
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}
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ns := b.namespaces[i]
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auth, err := b.App().factory.Client().CanI(ns, b.GVR(), client.MonitorAccess)
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if !auth {
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b.App().Flash().Err(err)
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return nil
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}
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b.app.switchNS(ns)
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b.setNamespace(ns)
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b.app.Flash().Infof("Viewing namespace `%s`...", ns)
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b.refresh()
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b.UpdateTitle()
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b.SelectRow(1, true)
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b.app.CmdBuff().Reset()
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if err := b.app.Config.SetActiveNamespace(b.GetModel().GetNamespace()); err != nil {
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log.Error().Err(err).Msg("Config save NS failed!")
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}
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if err := b.app.Config.Save(); err != nil {
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log.Error().Err(err).Msg("Config save failed!")
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}
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return nil
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}
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// ----------------------------------------------------------------------------
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// Helpers...
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func (b *Browser) setNamespace(ns string) {
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ns = client.CleanseNamespace(ns)
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if b.GetModel().InNamespace(ns) {
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return
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}
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if !b.meta.Namespaced {
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ns = client.ClusterScope
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}
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b.GetModel().SetNamespace(client.CleanseNamespace(ns))
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}
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func (b *Browser) defaultContext() context.Context {
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ctx := context.Background()
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ctx = context.WithValue(ctx, internal.KeyFactory, b.app.factory)
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ctx = context.WithValue(ctx, internal.KeyGVR, b.gvr.String())
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ctx = context.WithValue(ctx, internal.KeyPath, b.Path)
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ctx = context.WithValue(ctx, internal.KeyLabels, "")
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if ui.IsLabelSelector(b.SearchBuff().String()) {
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ctx = context.WithValue(ctx, internal.KeyLabels, ui.TrimLabelSelector(b.SearchBuff().String()))
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}
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ctx = context.WithValue(ctx, internal.KeyFields, "")
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ctx = context.WithValue(ctx, internal.KeyNamespace, client.CleanseNamespace(b.App().Config.ActiveNamespace()))
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return ctx
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}
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func (b *Browser) refreshActions() {
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aa := ui.KeyActions{
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ui.KeyC: ui.NewKeyAction("Copy", b.cpCmd, false),
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tcell.KeyEnter: ui.NewKeyAction("View", b.enterCmd, false),
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tcell.KeyCtrlR: ui.NewKeyAction("Refresh", b.refreshCmd, false),
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}
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if b.app.ConOK() {
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b.namespaceActions(aa)
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if !b.app.Config.K9s.GetReadOnly() {
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if client.Can(b.meta.Verbs, "edit") {
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aa[ui.KeyE] = ui.NewKeyAction("Edit", b.editCmd, true)
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}
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if client.Can(b.meta.Verbs, "delete") {
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aa[tcell.KeyCtrlD] = ui.NewKeyAction("Delete", b.deleteCmd, true)
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}
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}
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}
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if !dao.IsK9sMeta(b.meta) {
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aa[ui.KeyY] = ui.NewKeyAction("YAML", b.viewCmd, true)
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aa[ui.KeyD] = ui.NewKeyAction("Describe", b.describeCmd, true)
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}
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pluginActions(b, aa)
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hotKeyActions(b, aa)
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b.Actions().Add(aa)
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if b.bindKeysFn != nil {
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b.bindKeysFn(b.Actions())
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}
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b.app.Menu().HydrateMenu(b.Hints())
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}
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func (b *Browser) namespaceActions(aa ui.KeyActions) {
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if !b.meta.Namespaced || b.GetTable().Path != "" {
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return
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}
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b.namespaces = make(map[int]string, config.MaxFavoritesNS)
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aa[tcell.Key(ui.NumKeys[0])] = ui.NewKeyAction(client.NamespaceAll, b.switchNamespaceCmd, true)
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b.namespaces[0] = client.NamespaceAll
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index := 1
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for _, ns := range b.app.Config.FavNamespaces() {
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if ns == client.NamespaceAll {
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continue
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}
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aa[tcell.Key(ui.NumKeys[index])] = ui.NewKeyAction(ns, b.switchNamespaceCmd, true)
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b.namespaces[index] = ns
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index++
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}
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}
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func (b *Browser) simpleDelete(selections []string, msg string) {
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dialog.ShowConfirm(b.app.Content.Pages, "Confirm Delete", msg, func() {
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b.ShowDeleted()
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if len(selections) > 1 {
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b.app.Flash().Infof("Delete %d marked %s", len(selections), b.gvr)
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} else {
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b.app.Flash().Infof("Delete resource %s %s", b.gvr, selections[0])
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}
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for _, sel := range selections {
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nuker, ok := b.accessor.(dao.Nuker)
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if !ok {
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b.app.Flash().Errf("Invalid nuker %T", b.accessor)
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return
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}
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if err := nuker.Delete(sel, true, true); err != nil {
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b.app.Flash().Errf("Delete failed with `%s", err)
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} else {
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b.GetTable().DeleteMark(sel)
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}
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}
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b.refresh()
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}, func() {})
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}
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func (b *Browser) resourceDelete(selections []string, msg string) {
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dialog.ShowDelete(b.app.Content.Pages, msg, func(cascade, force bool) {
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b.ShowDeleted()
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if len(selections) > 1 {
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b.app.Flash().Infof("Delete %d marked %s", len(selections), b.gvr)
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} else {
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b.app.Flash().Infof("Delete resource %s %s", b.gvr, selections[0])
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}
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for _, sel := range selections {
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if err := b.GetModel().Delete(b.defaultContext(), sel, cascade, force); err != nil {
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b.app.Flash().Errf("Delete failed with `%s", err)
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} else {
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b.app.Flash().Infof("%s `%s deleted successfully", b.GVR(), sel)
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b.app.factory.DeleteForwarder(sel)
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b.GetTable().DeleteMark(sel)
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}
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}
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b.refresh()
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}, func() {})
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}
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