import java.util.ArrayList;
import java.util.List;
import javax.annotation.PreDestroy;
import javax.inject.Inject;
import javax.inject.Singleton;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.PreDestroy;
import javax.inject.Inject;
import javax.inject.Singleton;
import org.opendaylight.infrautils.utils.concurrent.Executors;
import org.opendaylight.infrautils.utils.concurrent.LoggingFutures;
import org.opendaylight.mdsal.binding.api.DataBroker;
import org.opendaylight.infrautils.utils.concurrent.Executors;
import org.opendaylight.infrautils.utils.concurrent.LoggingFutures;
import org.opendaylight.mdsal.binding.api.DataBroker;
import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
import org.opendaylight.netvirt.elanmanager.api.IElanService;
import org.opendaylight.netvirt.vpnmanager.api.VpnHelper;
import org.opendaylight.mdsal.common.api.LogicalDatastoreType;
import org.opendaylight.netvirt.elanmanager.api.IElanService;
import org.opendaylight.netvirt.vpnmanager.api.VpnHelper;