/
main.go
64 lines (54 loc) · 1.25 KB
/
main.go
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package main
import (
"context"
"flag"
"log"
"os"
"os/signal"
"github.com/frairon/bed"
"golang.org/x/sync/errgroup"
)
var (
chip = flag.String("chip", "gpiochip0", "chip to use")
output = flag.String("output", "wake_times.json", "file to use for storing the data")
)
func main() {
flag.Parse()
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
errg, ctx := errgroup.WithContext(ctx)
wakeup, err := bed.NewWakeup(*chip, *output)
if err != nil {
log.Fatalf("error initializing wake up: %v", err)
}
server := bed.NewServer(wakeup)
errg.Go(func() error {
defer log.Printf("server done")
return server.Run(ctx)
})
errg.Go(func() error {
defer log.Printf("wakeup done")
return wakeup.Run(ctx)
})
defer func() {
if err := wakeup.Close(); err != nil {
log.Printf("error closing wakeup: %v", err)
}
}()
errg.Go(func() error {
c := make(chan os.Signal, 1)
// We'll accept graceful shutdowns when quit via SIGINT (Ctrl+C)
// SIGKILL, SIGQUIT or SIGTERM (Ctrl+/) will not be caught.
signal.Notify(c, os.Interrupt)
// Block until we receive our signal.
select {
case <-c:
case <-ctx.Done():
}
cancel()
return nil
})
if err := errg.Wait(); err != nil {
log.Printf("error running bed: %v", err)
}
}