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 import java.util.concurrent.ExecutionException;
  13 import java.util.concurrent.TimeUnit;
  14 import java.util.concurrent.TimeoutException;
  15 import com.google.common.base.Optional;
  16 import com.google.common.base.Preconditions;
  17 import com.google.common.util.concurrent.SettableFuture;
  18 import org.opendaylight.controller.md.sal.binding.api.DataBroker;
  19 import org.opendaylight.controller.md.sal.binding.api.MountPoint;
  20 import org.opendaylight.controller.md.sal.binding.api.MountPointService;
  21 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.Node;
  22 import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.network.topology.topology.NodeKey;
  23 import org.opendaylight.yangtools.yang.binding.InstanceIdentifier;
  24 import org.slf4j.Logger;
  25 import org.slf4j.LoggerFactory;
  26
  27 public class MountedDataBrokerProvider {
  28
  29     private static final Logger LOG = LoggerFactory.getLogger(MountedDataBrokerProvider.class);
  30     private final MountPointService mountService;
  31     private final DataBroker dataBroker;
  32     @SuppressWarnings("FieldCanBeLocal")
  33     private final byte NODE_CONNECTION_TIMER = 60; // seconds
  34
  35     public MountedDataBrokerProvider(@Nonnull MountPointService mountService, @Nonnull DataBroker dataBroker) {
  36         this.mountService = Preconditions.checkNotNull(mountService);
  37         this.dataBroker = Preconditions.checkNotNull(dataBroker);
  38     }
  39
  40     public Optional<DataBroker> getDataBrokerForMountPoint(@Nonnull InstanceIdentifier<?> iidToMountPoint) {
  41         try {
  42             final SettableFuture<Boolean> futureNodeStatus = SettableFuture.create();
  43             final NodeKey nodeKey = iidToMountPoint.firstKeyOf(Node.class);
  44             new GbpVppNetconfConnectionProbe(nodeKey, futureNodeStatus, dataBroker);
  45             if (futureNodeStatus.get(NODE_CONNECTION_TIMER, TimeUnit.SECONDS)) {
  46                 LOG.debug("Node connected, mountpoint with iid {} available", iidToMountPoint);
  47                 Optional<MountPoint> potentialMountPoint = mountService.getMountPoint(iidToMountPoint);
  48                 if (potentialMountPoint.isPresent()) {
  49                     return potentialMountPoint.get().getService(DataBroker.class);
  50                 } else {
  51                     LOG.warn("Mount point does not exist for {}", iidToMountPoint);
  52                     return Optional.absent();
  53                 }
  54             } else {
  55                 LOG.warn("Failed while connecting to node, Iid: {}", iidToMountPoint);
  56                 return Optional.absent();
  57             }
  58         } catch (TimeoutException e) {
  59             LOG.warn("Mountpoint not obtained within {} seconds. Iid: {}", NODE_CONNECTION_TIMER, iidToMountPoint, e);
  60             return Optional.absent();
  61         } catch (ExecutionException | InterruptedException e) {
  62             LOG.warn("Error while getting mountpoint. Iid: {}", iidToMountPoint, e);
  63             return Optional.absent();
  64         }
  65     }
  66 }