main.go

package main

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

	"github.com/helmfile/helmfile/cmd"
	"github.com/helmfile/helmfile/pkg/app"
	"github.com/helmfile/helmfile/pkg/config"
	"github.com/helmfile/helmfile/pkg/errors"
)

func main() {
	var sig os.Signal
	sigs := make(chan os.Signal, 1)
	errChan := make(chan error, 1)

	signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)

	go func() {
		globalConfig := new(config.GlobalOptions)
		rootCmd, err := cmd.NewRootCmd(globalConfig)
		if err != nil {
			errChan <- err
			return
		}

		errChan <- rootCmd.Execute()
	}()

	select {
	case sig = <-sigs:
		if sig != nil {
			app.Cancel()
			app.CleanWaitGroup.Wait()

			// See http://tldp.org/LDP/abs/html/exitcodes.html
			switch sig {
			case syscall.SIGINT:
				os.Exit(130)
			case syscall.SIGTERM:
				os.Exit(143)
			}
		}
	case err := <-errChan:
		errors.HandleExitCoder(err)
	}
}