show-rss/src/cmd/main.go

118 lines
2.1 KiB
Go

package cmd
import (
"context"
"fmt"
"log"
inass "show-rss/src/asses"
"show-rss/src/cmd/asses"
"show-rss/src/cmd/fetch"
"show-rss/src/cmd/server"
"show-rss/src/pool"
"strings"
"time"
)
func Main(ctx context.Context, args []string) error {
ctx, can := context.WithCancel(ctx)
defer can()
ctx, can, flags, err := Config(ctx, args)
if err != nil {
return fmt.Errorf("failed to inject: %w", err)
}
defer can()
switch flags.Entrypoint {
case Defacto:
foos := map[string]func(context.Context) error{
"server": server.Main,
"fetch": fetch.Main,
"asses": asses.Main,
}
p := pool.New(len(foos))
defer p.Wait(ctx)
for k, foo := range foos {
if err := p.Go(ctx, k, runner(ctx, k, foo)); err != nil {
return fmt.Errorf("failed to go %s: %v", k, err)
}
}
return p.Wait(ctx)
case DeportAss:
for _, pos := range flags.Pos {
if err := inass.Entrypoint(ctx, pos); err != nil {
return err
}
}
return nil
case BestAssToSRT:
for _, pos := range flags.Pos {
if err := inass.BestAssToSRT(ctx, pos); err != nil {
return err
}
}
return nil
default:
panic(flags.Entrypoint.String())
}
return nil
}
type Entrypoint int
const (
Defacto Entrypoint = iota
DeportAss
BestAssToSRT
)
func (e *Entrypoint) Set(s string) error {
switch s {
case Defacto.String():
*e = Defacto
case DeportAss.String():
*e = DeportAss
case BestAssToSRT.String():
*e = BestAssToSRT
default:
return fmt.Errorf("%s nin (%s)", s, strings.Join([]string{
Defacto.String(),
DeportAss.String(),
BestAssToSRT.String(),
}, ", "))
}
return nil
}
func (e Entrypoint) String() string {
switch e {
case Defacto:
return ""
case DeportAss:
return "deport-ass"
case BestAssToSRT:
return "best-ass-to-srt"
}
panic("cannot serialize entrypoint")
}
func runner(ctx context.Context, k string, foo func(context.Context) error) func() error {
return func() error {
var err error
for {
err = foo(ctx)
if ctx.Err() == nil {
log.Printf("%s failed; restarting: %v", k, err)
}
select {
case <-ctx.Done():
break
case <-time.After(time.Second):
}
}
return err
}
}