k9s/internal/view/benchmark.go

159 lines
4.0 KiB
Go

package view
import (
"context"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/derailed/k9s/internal"
"github.com/derailed/k9s/internal/client"
"github.com/derailed/k9s/internal/config"
"github.com/derailed/k9s/internal/perf"
"github.com/derailed/k9s/internal/render"
"github.com/derailed/k9s/internal/ui"
"github.com/gdamore/tcell"
"github.com/rs/zerolog/log"
)
const (
benchTitle = "Benchmarks"
resultTitle = "Benchmark Results"
)
// Benchmark represents a service benchmark results view.
type Benchmark struct {
ResourceViewer
details *Details
}
// NewBench returns a new viewer.
func NewBenchmark(gvr client.GVR) ResourceViewer {
b := Benchmark{
ResourceViewer: NewBrowser(gvr),
details: NewDetails(resultTitle),
}
b.GetTable().SetBorderFocusColor(tcell.ColorSeaGreen)
b.GetTable().SetSelectedStyle(tcell.ColorWhite, tcell.ColorSeaGreen, tcell.AttrNone)
b.GetTable().SetColorerFn(render.Benchmark{}.ColorerFunc())
b.GetTable().SetSortCol(b.GetTable().NameColIndex()+7, 0, true)
b.SetContextFn(b.benchContext)
b.GetTable().SetEnterFn(b.viewBench)
return &b
}
func (b *Benchmark) benchContext(ctx context.Context) context.Context {
return context.WithValue(ctx, internal.KeyDir, benchDir(b.App().Config))
}
// BOZO!!
// // Start runs the refresh loop
// func (b *Bench) Start() {
// log.Debug().Msgf(">>>> Bench START")
// var ctx context.Context
// ctx, b.cancelFn = context.WithCancel(context.Background())
// if err := b.watchBenchDir(ctx); err != nil {
// b.App().Flash().Errf("Unable to watch benchmarks directory %s", err)
// }
// }
func (b *Benchmark) viewBench(app *App, ns, res, path string) {
log.Debug().Msgf("VIEWBENCH %q -- %q -- %q", ns, res, path)
data, err := readBenchFile(app.Config, b.benchFile())
if err != nil {
b.App().Flash().Errf("Unable to load bench file %s", err)
return
}
b.details.SetText(data)
b.details.SetSubject(fileToSubject(path))
b.App().inject(b.details)
return
}
func fileToSubject(path string) string {
tokens := strings.Split(path, "/")
log.Debug().Msgf("TOKENS %v", tokens)
ee := strings.Split(tokens[len(tokens)-1], "_")
return ee[0] + "/" + ee[1]
}
func (b *Benchmark) deleteCmd(evt *tcell.EventKey) *tcell.EventKey {
if !b.GetTable().RowSelected() {
return nil
}
sel, file := b.GetTable().GetSelectedItem(), b.benchFile()
dir := filepath.Join(perf.K9sBenchDir, b.App().Config.K9s.CurrentCluster)
showModal(b.App().Content.Pages, fmt.Sprintf("Delete benchmark `%s?", file), func() {
if err := os.Remove(filepath.Join(dir, file)); err != nil {
b.App().Flash().Errf("Unable to delete file %s", err)
return
}
b.App().Flash().Infof("Benchmark %s deleted!", sel)
})
return nil
}
func (b *Benchmark) benchFile() string {
r := b.GetTable().GetSelectedRowIndex()
return ui.TrimCell(b.GetTable().SelectTable, r, 7)
}
// BOZO!!
// func (b *Benchmark) watchBenchDir(ctx context.Context) error {
// w, err := fsnotify.NewWatcher()
// if err != nil {
// return err
// }
// go func() {
// for {
// select {
// case evt := <-w.Events:
// log.Debug().Msgf("Bench event %#v", evt)
// b.App().QueueUpdateDraw(func() {
// b.Refresh()
// })
// case err := <-w.Errors:
// log.Info().Err(err).Msg("Dir Watcher failed")
// return
// case <-ctx.Done():
// log.Debug().Msg("!!!! FS WATCHER DONE!!")
// if err := w.Close(); err != nil {
// log.Error().Err(err).Msg("Closing bench watched")
// }
// return
// }
// }
// }()
// return w.Add(benchDir(b.App().Config))
// }
// ----------------------------------------------------------------------------
// Helpers...
func benchDir(cfg *config.Config) string {
return filepath.Join(perf.K9sBenchDir, cfg.K9s.CurrentCluster)
}
func loadBenchDir(cfg *config.Config) ([]os.FileInfo, error) {
return ioutil.ReadDir(benchDir(cfg))
}
func readBenchFile(cfg *config.Config, n string) (string, error) {
data, err := ioutil.ReadFile(filepath.Join(benchDir(cfg), n))
if err != nil {
return "", err
}
return string(data), nil
}