packer-cn/signal.go

30 lines
670 B
Go

package main
import (
"github.com/mitchellh/packer/packer"
"github.com/mitchellh/packer/packer/plugin"
"log"
"os"
"os/signal"
)
// Prepares the signal handlers so that we handle interrupts properly.
// The signal handler exists in a goroutine.
func setupSignalHandlers(env packer.Environment) {
ch := make(chan os.Signal, 1)
signal.Notify(ch, os.Interrupt)
go func() {
<-ch
log.Println("First interrupt. Ignoring, will let plugins handle...")
<-ch
log.Println("Second interrupt. Exiting now.")
env.Ui().Error("Interrupt signal received twice. Forcefully exiting now.")
// Force kill all the plugins
plugin.CleanupClients()
os.Exit(1)
}()
}