// Package terminator provides a simple way to await process termination.
//
// Just wait until the Terminate channel closes:
//
//	<-terminator.Terminate
//
// it will fall through, once your process receives Ctrl-C, SIGINT, SIGTERM or SIGKILL signal.
package terminator

import (
	"os"
	"os/signal"
	"syscall"
)

// enable to react to
//
//	<-terminator.Terminate
//
// nicely
var Terminate = make(chan struct{})

func init() {
	sigs := make(chan os.Signal)
	signal.Notify(sigs, os.Interrupt, os.Kill)
	signal.Notify(sigs, syscall.SIGTERM)

	// When notified about SIGINT, SIGTERM, or SIGKILL close the Terminator channel
	// in order to notify interested parties to quit.
	go func(c <-chan os.Signal) {
		<-c
		close(Terminate)
	}(sigs)
}