renderers/vpp/src/main/java/org/opendaylight/groupbasedpolicy/renderer/vpp/util/MountedDataBrokerProvider.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. and others. All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.groupbasedpolicy.renderer.vpp.util;
  10
  11 import javax.annotation.Nonnull;
  12
  13 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  14 import org.opendaylight.controller.md.sal.binding.api.MountPoint;
  15 import org.opendaylight.controller.md.sal.binding.api.MountPointService;
  16 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  17 import org.slf4j.Logger;
  18 import org.slf4j.LoggerFactory;
  19
  20 import com.google.common.base.Optional;
  21 import com.google.common.base.Preconditions;
  22
  23 public class MountedDataBrokerProvider {
  24
  25     private static final Logger LOG = LoggerFactory.getLogger(MountedDataBrokerProvider.class);
  26     private final MountPointService mountService;
  27
  28     public MountedDataBrokerProvider(@Nonnull MountPointService mountService) {
  29         this.mountService = Preconditions.checkNotNull(mountService);
  30     }
  31
  32     public Optional<DataBroker> getDataBrokerForMountPoint(@Nonnull InstanceIdentifier<?> iidToMountPoint) {
  33         Optional<MountPoint> potentialMountPoint = mountService.getMountPoint(iidToMountPoint);
  34         if (!potentialMountPoint.isPresent()) {
  35             LOG.debug("Mount point does not exist for {}", iidToMountPoint);
  36             return Optional.absent();
  37         }
  38         return potentialMountPoint.get().getService(DataBroker.class);
  39     }
  40 }