Example usage for com.google.common.base Optional get

Introduction

In this page you can find the example usage for com.google.common.base Optional get.

Prototype

public abstract T get();

Source Link

Document

Returns the contained instance, which must be present.

Usage

From source file:io.mesosphere.mesos.frameworks.cassandra.framework.Main.java

static String frameworkName(final Optional<String> clusterName) {
    if (clusterName.isPresent()) {
        return "cassandra." + clusterName.get();
    } else {/*from  www  .j a  v  a2  s.c o  m*/
        return "cassandra";
    }
}

From source file:org.opendaylight.ovsdb.hwvtepsouthbound.HwvtepSouthboundUtil.java

public static Optional<HwvtepGlobalAugmentation> getManagingNode(DataBroker db, HwvtepGlobalRef ref) {
    try {//from  www  . j a  v  a  2  s .c o m
        ReadOnlyTransaction transaction = db.newReadOnlyTransaction();
        @SuppressWarnings("unchecked")
        // Note: erasure makes this safe in combination with the typecheck
        // below
        InstanceIdentifier<Node> path = (InstanceIdentifier<Node>) ref.getValue();

        CheckedFuture<Optional<Node>, ReadFailedException> nf = transaction
                .read(LogicalDatastoreType.OPERATIONAL, path);
        transaction.close();
        Optional<Node> optional = nf.get();
        if (optional != null && optional.isPresent()) {
            HwvtepGlobalAugmentation hwvtepNode = null;
            Node node = optional.get();
            if (node instanceof HwvtepGlobalAugmentation) {
                hwvtepNode = (HwvtepGlobalAugmentation) node;
            } else if (node != null) {
                hwvtepNode = node.getAugmentation(HwvtepGlobalAugmentation.class);
            }
            if (hwvtepNode != null) {
                return Optional.of(hwvtepNode);
            } else {
                LOG.warn("Hwvtep switch claims to be managed by {} but " + "that HwvtepNode does not exist",
                        ref.getValue());
                return Optional.absent();
            }
        } else {
            LOG.warn("Mysteriously got back a thing which is *not* a topology Node: {}", optional);
            return Optional.absent();
        }
    } catch (Exception e) {
        LOG.warn("Failed to get HwvtepNode {}", ref, e);
        return Optional.absent();
    }
}

From source file:extrabiomes.helpers.BiomeHelper.java

@SuppressWarnings("deprecation")
public static void addWeightedGrassGen(Optional<? extends BiomeGenBase> biome, WorldGenerator grassGen,
        int weight) {
    if (!biome.isPresent())
        return;/* ww  w  . j  a v  a  2  s  .  co  m*/

    extrabiomes.api.BiomeManager.addWeightedGrassGenForBiome(biome.get(), grassGen, weight);
}

From source file:org.opendaylight.yangtools.yang.data.api.schema.tree.StoreTreeNodes.java

public static <T extends StoreTreeNode<T>> Entry<YangInstanceIdentifier, T> findClosestsOrFirstMatch(
        final T tree, final YangInstanceIdentifier path, final Predicate<T> predicate) {
    Optional<T> parent = Optional.of(tree);
    Optional<T> current = Optional.of(tree);

    int nesting = 0;
    Iterator<PathArgument> pathIter = path.getPathArguments().iterator();
    while (current.isPresent() && pathIter.hasNext() && !predicate.apply(current.get())) {
        parent = current;/*from w w  w  .  j a v  a  2  s  .c o  m*/
        current = current.get().getChild(pathIter.next());
        nesting++;
    }
    if (current.isPresent()) {
        final YangInstanceIdentifier currentPath = path.getAncestor(nesting);
        return new SimpleImmutableEntry<>(currentPath, current.get());
    }

    /*
     * Subtracting 1 from nesting level at this point is safe, because we
     * cannot reach here with nesting == 0: that would mean the above check
     * for current.isPresent() failed, which it cannot, as current is always
     * present. At any rate we verify state just to be on the safe side.
     */
    Verify.verify(nesting > 0);
    return new SimpleImmutableEntry<>(path.getAncestor(nesting - 1), parent.get());
}

From source file:org.opendaylight.service.impl.activate.driver.ActivateNetconfConnetion.java

public static void readBierConfigFromAllNetconfNodes() {

    Topology topology = null;//  w w  w .  jav  a2s .  c  o m
    final ReadOnlyTransaction transaction = dataBroker.newReadOnlyTransaction();
    Optional<Topology> optionalData;
    try {
        optionalData = transaction.read(LogicalDatastoreType.OPERATIONAL, NETCONF_TOPOLOGY_IID).checkedGet();
        if (optionalData.isPresent()) {
            topology = optionalData.get();
        } else {
            LOG.debug("{}: Failed to read {}", Thread.currentThread().getStackTrace()[1], NETCONF_TOPOLOGY_IID);
        }
    } catch (ReadFailedException e) {
        LOG.warn("Failed to read {} ", NETCONF_TOPOLOGY_IID, e);
    }
    transaction.close();

    if (topology == null) {
        LOG.info("No netconf nodes in datastore!!");
        return;
    }

    for (final Node node : topology.getNode()) {
        NetconfNode netconfNode = node.getAugmentation(NetconfNode.class);
        if ((netconfNode.getConnectionStatus() == NetconfNodeConnectionStatus.ConnectionStatus.Connected)
                && (!node.getNodeId().getValue().equals("controller-config"))) {
            bierConfigReader.readBierGlobal(node.getNodeId().getValue());
            LOG.info("Read bier global of {}", node.getNodeId());

        }

    }

}

From source file:org.automagic.deps.doctor.Utils.java

public static Optional<Node> getPluginComment(String parent, Artifact artifact, Document document) {

    Optional<Node> dependencyNode = getDependencyNode(artifact, document, parent);

    if (!dependencyNode.isPresent()) {
        return Optional.absent();
    }//from   w  ww .  j a v a2 s.com

    if (dependencyNode.get().hasChildNodes()) {
        NodeList childNodes = dependencyNode.get().getChildNodes();
        for (int i = 0; i < childNodes.getLength(); i++) {
            Node node = childNodes.item(i);
            if (Node.COMMENT_NODE == node.getNodeType()
                    && contains(node.getNodeValue(), PomWriter.AUTO_COMMENT)) {
                return Optional.of(node);
            }
        }
    }

    return Optional.absent();
}

From source file:net.es.nsi.pce.pf.PfUtils.java

public static ServiceDomainType getServiceDomainOrFail(NsiTopology topology, StpType stp) {
    Optional<ResourceRefType> serviceDomain = Optional.fromNullable(stp.getServiceDomain());
    if (serviceDomain.isPresent()) {
        Optional<ServiceDomainType> sd = Optional
                .fromNullable(topology.getServiceDomain(stp.getServiceDomain().getId()));
        if (sd.isPresent()) {
            return sd.get();
        }/*from   ww w  . j  av a2  s .  c  o  m*/
    }
    throw Exceptions.noPathFound("Missing ServiceDomain for source sdpId=" + stp.getId());
}

From source file:org.icgc.dcc.release.job.join.task.CreateSgvObservation.java

public static Optional<Collection<ObjectNode>> convertConsequences(
        Optional<? extends Iterable<SgvConsequence>> consequences) {
    if (!consequences.isPresent()) {
        return Optional.absent();
    }//from   w w w. ja  va  2s  .  c om

    val builder = ImmutableList.<ObjectNode>builder();
    for (val consequence : consequences.get()) {
        val json = (ObjectNode) JacksonFactory.MAPPER.valueToTree(consequence);
        builder.add(trimConsequence(json));
    }

    return Optional.of(builder.build());
}

From source file:org.opendaylight.controller.config.yangjmxgenerator.plugin.CodeWriter.java

private static List<File> persistGeneratedObjects(final File targetBaseDir, final File mainBaseDir,
        final Map<GeneratedObject, Boolean> gos) throws IOException {
    List<File> generatedFiles = new ArrayList<>();
    for (Entry<GeneratedObject, Boolean> entry : gos.entrySet()) {
        boolean overwrite = entry.getValue();
        File dst;//  w w  w. j  ava2 s  .  c om
        if (overwrite) {
            dst = targetBaseDir;
        } else {
            dst = mainBaseDir;
        }
        Optional<Entry<FullyQualifiedName, File>> maybePersistEntry = entry.getKey().persist(dst, overwrite);

        if (maybePersistEntry.isPresent()) {
            generatedFiles.add(maybePersistEntry.get().getValue());
        }
    }
    return generatedFiles;
}

From source file:org.opendaylight.genius.datastoreutils.SingleTransactionDataBroker.java

public static <T extends DataObject> T syncRead(DataBroker broker, LogicalDatastoreType datastoreType,
        InstanceIdentifier<T> path) throws ReadFailedException {

    try (ReadOnlyTransaction tx = broker.newReadOnlyTransaction()) {
        Optional<T> optionalDataObject = tx.read(datastoreType, path).checkedGet();
        if (optionalDataObject.isPresent()) {
            return optionalDataObject.get();
        } else {//from   w  w  w  . j a va2  s  .  co m
            throw new ExpectedDataObjectNotFoundException(datastoreType, path);
        }
    }
}