func (rm *ReplicationManager) synchronize() {
	var controllerSpecs []api.ReplicationController
	helper := tools.EtcdHelper{rm.etcdClient}
	err := helper.ExtractList("/registry/controllers", &controllerSpecs)
	if err != nil {
		glog.Errorf("Synchronization error: %v (%#v)", err, err)
		return
	}
	for _, controllerSpec := range controllerSpecs {
		err = rm.syncHandler(controllerSpec)
		if err != nil {
			glog.Errorf("Error synchronizing: %#v", err)
		}
	}
}
func (rm *ReplicationManager) synchronize() {
	var controllerSpecs []api.ReplicationController
	helper := tools.EtcdHelper{rm.etcdClient}
	err := helper.ExtractList("/registry/controllers", &controllerSpecs)
	if err != nil {
		glog.Errorf("Synchronization error: %v (%#v)", err, err)
		return
	}
	wg := sync.WaitGroup{}
	wg.Add(len(controllerSpecs))
	for ix := range controllerSpecs {
		go func(ix int) {
			defer wg.Done()
			err := rm.syncHandler(controllerSpecs[ix])
			if err != nil {
				glog.Errorf("Error synchronizing: %#v", err)
			}
		}(ix)
	}
	wg.Wait()
}