536 lines
13 KiB
Go
536 lines
13 KiB
Go
package view
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import (
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"bytes"
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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/atotto/clipboard"
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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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"k8s.io/apimachinery/pkg/labels"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/cli-runtime/pkg/printers"
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)
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// ContextFunc enhances a given context.
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type ContextFunc func(context.Context) context.Context
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type BindKeysFunc func(ui.KeyActions)
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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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gvr client.GVR
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envFn EnvFunc
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meta metav1.APIResource
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accessor dao.Accessor
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contextFn ContextFunc
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bindKeysFn BindKeysFunc
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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(string(gvr)),
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gvr: 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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log.Debug().Msgf("BROWSER INIT %s", b.gvr)
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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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if err = b.Table.Init(ctx); err != nil {
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return err
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}
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if !dao.IsK9sMeta(b.meta) {
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_ = b.app.factory.ForResource(b.app.Config.ActiveNamespace(), b.GVR())
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b.app.factory.WaitForCacheSync()
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}
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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.Table.BaseTitle = b.meta.Kind
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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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log.Debug().Msgf("ACCESSOR FOR %s -- %#v", b.gvr, b.accessor)
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b.envFn = b.defaultK9sEnv
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b.setNamespace(b.App().Config.ActiveNamespace())
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b.refresh()
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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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return nil
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}
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// Start initializes updates.
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func (b *Browser) Start() {
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b.Stop()
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log.Debug().Msgf("BROWSER START %s", b.gvr)
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b.Table.Start()
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var ctx context.Context
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ctx, b.cancelFn = context.WithCancel(context.Background())
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go b.update(ctx)
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}
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func (b *Browser) Stop() {
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if b.cancelFn != nil {
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b.cancelFn()
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b.cancelFn = nil
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log.Debug().Msgf("BROWSER <STOP> %s", b.BaseTitle)
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}
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}
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func (b *Browser) Refresh() {
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b.refresh()
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}
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// Name returns the component name.
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func (b *Browser) Name() string {
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return b.meta.Kind
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}
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// SetContextFn populates a custom context.
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func (b *Browser) SetContextFn(f ContextFunc) {
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b.contextFn = f
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}
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// SetBindKeysFn adds additional key bindings.
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func (b *Browser) SetBindKeysFn(f BindKeysFunc) {
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b.bindKeysFn = f
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}
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// SetEnvFn sets a function to pull viewer env vars for plugins.
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func (b *Browser) SetEnvFn(f EnvFunc) { b.envFn = f }
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// GVR returns a resource descriptor.
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func (b *Browser) GVR() string { return string(b.gvr) }
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func (b *Browser) GetTable() *Table {
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return b.Table
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}
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func (b *Browser) update(ctx context.Context) {
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for {
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select {
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case <-ctx.Done():
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log.Debug().Msgf("BROWSER <<CANCELED>> -- %s", b.gvr)
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return
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case <-time.After(time.Duration(b.app.Config.K9s.GetRefreshRate()) * time.Second):
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b.app.QueueUpdateDraw(func() {
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b.refresh()
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})
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}
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}
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}
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// ----------------------------------------------------------------------------
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// Actions()...
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func (b *Browser) cpCmd(evt *tcell.EventKey) *tcell.EventKey {
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if !b.RowSelected() {
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return evt
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}
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_, n := client.Namespaced(b.GetSelectedItem())
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log.Debug().Msgf("Copied selection to clipboard %q", n)
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b.app.Flash().Info("Current selection copied to clipboard...")
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if err := clipboard.WriteAll(n); 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) enterCmd(evt *tcell.EventKey) *tcell.EventKey {
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log.Debug().Msgf("GENERIC RES ENTER CMD FOR %q...", b.gvr)
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// If in command mode run filter otherwise enter function.
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if b.filterCmd(evt) == nil || !b.RowSelected() {
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return nil
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}
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f := b.defaultEnter
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if b.enterFn != nil {
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log.Debug().Msgf("Found custom enter")
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f = b.enterFn
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}
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f(b.app, b.Data.Namespace, string(b.gvr), b.GetSelectedItem())
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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("Refreshinb...")
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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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log.Debug().Msgf("DEL SELECTIONS %#v", selections)
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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, 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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cancelFn := func() {}
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if dao.IsK9sMeta(b.meta) {
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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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if err := b.accessor.(dao.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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b.SelectRow(1, true)
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}, cancelFn)
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return nil
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}
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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.accessor.(dao.Nuker).Delete(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.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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b.SelectRow(1, true)
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}, cancelFn)
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}
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return nil
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}
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func (b *Browser) defaultEnter(app *App, _, _, sel string) {
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log.Debug().Msgf("--------- Resource %q Verbs %v", sel, b.meta.Verbs)
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ns, n := client.Namespaced(sel)
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yaml, err := dao.Describe(b.app.Conn(), b.gvr, ns, n)
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if err != nil {
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b.app.Flash().Errf("Describe command failed: %s", err)
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return
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}
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details := NewDetails("Describe")
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details.SetSubject(sel)
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details.SetTextColor(b.app.Styles.FgColor())
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details.SetText(colorizeYAML(b.app.Styles.Views().Yaml, yaml))
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details.ScrollToBeginning()
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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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}
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func (b *Browser) describeCmd(evt *tcell.EventKey) *tcell.EventKey {
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log.Debug().Msgf("DESCRIBE %t -- %#v", b.RowSelected(), b.GetSelectedItems())
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if !b.RowSelected() {
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return evt
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}
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b.defaultEnter(b.app, b.Data.Namespace, string(b.gvr), b.GetSelectedItem())
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return nil
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}
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func (b *Browser) viewCmd(evt *tcell.EventKey) *tcell.EventKey {
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if !b.RowSelected() {
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return evt
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}
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path := b.GetSelectedItem()
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log.Debug().Msgf("------ NAMESPACES %q vs %q", path, b.Data.Namespace)
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o, err := b.app.factory.Get(string(b.gvr), path, labels.Everything())
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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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raw, err := toYAML(o)
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if err != nil {
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b.app.Flash().Errf("Unable to marshal resource %s", err)
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return nil
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}
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details := NewDetails("YAML")
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details.SetSubject(path)
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details.SetTextColor(b.app.Styles.FgColor())
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details.SetText(colorizeYAML(b.app.Styles.Views().Yaml, raw))
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details.ScrollToBeginning()
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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 toYAML(o runtime.Object) (string, error) {
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var (
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buff bytes.Buffer
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p printers.YAMLPrinter
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)
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err := p.PrintObj(o, &buff)
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if err != nil {
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log.Error().Msgf("Marshal Error %v", err)
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return "", err
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}
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return buff.String(), nil
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}
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func (b *Browser) editCmd(evt *tcell.EventKey) *tcell.EventKey {
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if !b.RowSelected() {
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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, po := client.Namespaced(b.GetSelectedItem())
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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.Kind)
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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, po)...) {
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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) setNamespace(ns string) {
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if !b.meta.Namespaced {
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b.Data.Namespace = render.ClusterScope
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return
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}
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if b.Data.Namespace == ns {
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return
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}
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if ns == render.NamespaceAll {
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ns = render.AllNamespaces
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}
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log.Debug().Msgf("!!!!!! SETTING NS %q", ns)
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b.Data.Namespace = ns
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b.Data.RowEvents = b.Data.RowEvents.Clear()
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}
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func (b *Browser) switchNamespaceCmd(evt *tcell.EventKey) *tcell.EventKey {
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i, _ := strconv.Atoi(string(evt.Rune()))
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ns := b.namespaces[i]
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if ns == "" {
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ns = render.NamespaceAll
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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.Data.Namespace); 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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func (b *Browser) refresh() {
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log.Debug().Msgf("REFRESHING (%q) in ns %q -- %q", b.gvr, b.Data.Namespace, b.Path)
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if b.app.Conn() == nil {
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log.Error().Msg("No api connection")
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return
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}
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ctx := b.defaultContext()
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if b.contextFn != nil {
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log.Debug().Msgf("GOT CUSTOM CTX")
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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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data, err := dao.Reconcile(ctx, b.Table.Data, b.gvr)
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if err != nil {
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b.app.Flash().Err(err)
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}
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b.refreshActions()
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b.Update(data)
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}
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func (b *Browser) defaultContext() context.Context {
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ctx := context.WithValue(context.Background(), internal.KeyFactory, b.app.factory)
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ctx = context.WithValue(ctx, internal.KeyGVR, string(b.gvr))
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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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ctx = context.WithValue(ctx, internal.KeyFields, "")
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return ctx
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}
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func (b *Browser) namespaceActions(aa ui.KeyActions) {
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if b.app.Conn() == nil || !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(render.NamespaceAll, b.switchNamespaceCmd, true)
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b.namespaces[0] = render.NamespaceAll
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index := 1
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for _, n := range b.app.Config.FavNamespaces() {
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if n == render.NamespaceAll {
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continue
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}
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aa[tcell.Key(ui.NumKeys[index])] = ui.NewKeyAction(n, b.switchNamespaceCmd, true)
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b.namespaces[index] = n
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index++
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}
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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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b.namespaceActions(aa)
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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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if client.Can(b.meta.Verbs, "view") {
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aa[ui.KeyY] = ui.NewKeyAction("YAML", b.viewCmd, true)
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}
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if client.Can(b.meta.Verbs, "describe") {
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aa[ui.KeyD] = ui.NewKeyAction("Describe", b.describeCmd, true)
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}
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b.customActions(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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}
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func (b *Browser) customActions(aa ui.KeyActions) {
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pp := config.NewPlugins()
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if err := pp.Load(); err != nil {
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log.Warn().Msgf("No plugin configuration found")
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return
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}
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for k, plugin := range pp.Plugin {
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if !in(plugin.Scopes, b.meta.Name) {
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continue
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}
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key, err := asKey(plugin.ShortCut)
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if err != nil {
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log.Error().Err(err).Msg("Unable to map shortcut to a key")
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continue
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}
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_, ok := aa[key]
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if ok {
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log.Error().Err(fmt.Errorf("Doh! you are trying to overide an existing command `%s", k)).Msg("Invalid shortcut")
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continue
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}
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aa[key] = ui.NewKeyAction(
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plugin.Description,
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b.execCmd(plugin.Command, plugin.Background, plugin.Args...),
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true)
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}
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}
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func (b *Browser) execCmd(bin string, bg bool, args ...string) ui.ActionHandler {
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return func(evt *tcell.EventKey) *tcell.EventKey {
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if !b.RowSelected() {
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return evt
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}
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var (
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env = b.envFn()
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aa = make([]string, len(args))
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err error
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)
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for i, a := range args {
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aa[i], err = env.envFor(a)
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if err != nil {
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log.Error().Err(err).Msg("Args match failed")
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return nil
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}
|
|
}
|
|
|
|
if run(true, b.app, bin, bg, aa...) {
|
|
b.app.Flash().Info("Custom CMD launched!")
|
|
} else {
|
|
b.app.Flash().Info("Custom CMD failed!")
|
|
}
|
|
return nil
|
|
}
|
|
}
|
|
|
|
func (b *Browser) defaultK9sEnv() K9sEnv {
|
|
return defaultK9sEnv(b.app, b.GetSelectedItem(), b.GetRow())
|
|
}
|