38 lines
742 B
Go
38 lines
742 B
Go
package command
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"os"
|
|
"os/signal"
|
|
"syscall"
|
|
|
|
"github.com/hashicorp/packer/packer"
|
|
)
|
|
|
|
func handleTermInterrupt(ui packer.Ui) (context.Context, func()) {
|
|
ctx, cancelCtx := context.WithCancel(context.Background())
|
|
// Handle interrupts for this build
|
|
sigCh := make(chan os.Signal, 1)
|
|
signal.Notify(sigCh, os.Interrupt, syscall.SIGTERM)
|
|
cleanup := func() {
|
|
cancelCtx()
|
|
signal.Stop(sigCh)
|
|
close(sigCh)
|
|
}
|
|
go func() {
|
|
select {
|
|
case sig := <-sigCh:
|
|
if sig == nil {
|
|
// context got cancelled and this closed chan probably
|
|
// triggered first
|
|
return
|
|
}
|
|
ui.Error(fmt.Sprintf("Cancelling build after receiving %s", sig))
|
|
cancelCtx()
|
|
case <-ctx.Done():
|
|
}
|
|
}()
|
|
return ctx, cleanup
|
|
}
|