func doUpgradeTakeOver(stateless bool, b backend.Backend, cb config.Backend) error {
var wg sync.WaitGroup
nodes, err := listPublishedServices(cb)
if err != nil {
return err
}
b.Stop([]string{"publisher"}, &wg, Stdout, Stderr)
wg.Wait()
b.Destroy([]string{"publisher"}, &wg, Stdout, Stderr)
wg.Wait()
if err := republishServices(1800, nodes, cb); err != nil {
return err
}
b.RollingRestart("router", &wg, Stdout, Stderr)
wg.Wait()
b.Create([]string{"publisher"}, &wg, Stdout, Stderr)
wg.Wait()
b.Start([]string{"publisher"}, &wg, Stdout, Stderr)
wg.Wait()
installUpgradeServices(b, stateless, &wg, Stdout, Stderr)
wg.Wait()
startUpgradeServices(b, stateless, &wg, Stdout, Stderr)
wg.Wait()
return nil
}
// RollingRestart restart instance unit in a rolling manner
func RollingRestart(target string, b backend.Backend) error {
var wg sync.WaitGroup
b.RollingRestart(target, &wg, Stdout, Stderr)
wg.Wait()
return nil
}