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:org.locationtech.geogig.cli.Logging.java

static void tryConfigureLogging(Platform platform) {
    // instantiate and call ResolveGeogigDir directly to avoid calling getGeogig() and hence get
    // some logging events before having configured logging
    final Optional<URL> geogigDirUrl = new ResolveGeogigDir(platform).call();
    if (!geogigDirUrl.isPresent() || !"file".equalsIgnoreCase(geogigDirUrl.get().getProtocol())) {
        // redirect java.util.logging to SLF4J anyways
        SLF4JBridgeHandler.removeHandlersForRootLogger();
        SLF4JBridgeHandler.install();/*from   w  w w . j  a  v a 2s . c o  m*/
        return;
    }

    final File geogigDir;
    try {
        geogigDir = new File(geogigDirUrl.get().toURI());
    } catch (URISyntaxException e) {
        throw Throwables.propagate(e);
    }

    if (geogigDir.equals(geogigDirLoggingConfiguration)) {
        return;
    }

    if (!geogigDir.exists() || !geogigDir.isDirectory()) {
        return;
    }
    final URL loggingFile = getOrCreateLoggingConfigFile(geogigDir);

    if (loggingFile == null) {
        return;
    }

    try {
        LoggerContext loggerContext = (LoggerContext) LoggerFactory.getILoggerFactory();
        loggerContext.reset();
        /*
         * Set the geogigdir variable for the config file can resolve the default location
         * ${geogigdir}/log/geogig.log
         */
        loggerContext.putProperty("geogigdir", geogigDir.getAbsolutePath());
        JoranConfigurator configurator = new JoranConfigurator();
        configurator.setContext(loggerContext);
        configurator.doConfigure(loggingFile);

        // redirect java.util.logging to SLF4J
        SLF4JBridgeHandler.removeHandlersForRootLogger();
        SLF4JBridgeHandler.install();
        geogigDirLoggingConfiguration = geogigDir;
    } catch (JoranException e) {
        LOGGER.error("Error configuring logging from file {}. '{}'", loggingFile, e.getMessage(), e);
    }
}

From source file:org.opendaylight.faas.fabrics.vxlan.adapters.ovs.utils.OfFlowUtils.java

public static Table getTable(NodeBuilder nodeBuilder, short table, ReadOnlyTransaction readTx,
        final LogicalDatastoreType store) {
    try {//from   w w  w .jav  a2s  . co  m
        Optional<Table> data = readTx.read(store, createTablePath(nodeBuilder, table)).get();
        if (data.isPresent()) {
            return data.get();
        }
    } catch (InterruptedException | ExecutionException e) {
        LOG.error("Failed to get table {}", table, e);
    }

    LOG.info("Cannot find data for table {} in {}", table, store);
    return null;
}

From source file:org.opendaylight.vtn.manager.it.util.inventory.InventoryUtils.java

/**
 * Determine whether the given node has at least one edge port in up state
 * or not./*from  w  w  w .  j a  va  2 s  .  co  m*/
 *
 * @param rtx  A read-only MD-SAL datastore transaction.
 * @param nid  The node identifier string.
 * @return  {@code true} is returned if the given node has at least one
 *          edge port in up state. Otherwise {@code false} is returned.
 */
public static boolean hasEdgePort(ReadTransaction rtx, String nid) {
    Optional<VtnNode> opt = DataStoreUtils.read(rtx, getVtnNodeIdentifier(nid));
    return (opt.isPresent()) ? hasEdgePort(opt.get()) : false;
}

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

/**
 * Finds a node in tree//from   ww w . j av  a  2 s . c  o m
 *
 * @param tree Data Tree
 * @param path Path to the node
 * @return Optional with node if the node is present in tree, {@link Optional#absent()} otherwise.
 */
public static <T extends StoreTreeNode<T>> Optional<T> findNode(final T tree,
        final YangInstanceIdentifier path) {
    Optional<T> current = Optional.<T>of(tree);
    Iterator<PathArgument> pathIter = path.getPathArguments().iterator();
    while (current.isPresent() && pathIter.hasNext()) {
        current = current.get().getChild(pathIter.next());
    }
    return current;
}

From source file:springfox.documentation.spring.web.readers.operation.ResponseMessagesReader.java

public static int httpStatusCode(OperationContext context) {
    Optional<ResponseStatus> responseStatus = context.findAnnotation(ResponseStatus.class);
    int httpStatusCode = HttpStatus.OK.value();
    if (responseStatus.isPresent()) {
        httpStatusCode = responseStatus.get().value().value();
    }/*w  w  w .j  a va  2s .c  o m*/
    return httpStatusCode;
}

From source file:com.eucalyptus.util.async.AsyncExceptions.java

/**
 * Test if the given throwable was caused by a web service error with the specified code.
 *
 * @param throwable The possibly wer service caused throwable.
 * @param code The error code to test for
 * @return True if the throwable was caused by a web service error with the given code
 *//*from   ww  w  . j a  v a2 s  . co  m*/
public static boolean isWebServiceErrorCode(final Throwable throwable, final String code) {
    boolean codeMatch = false;
    final Optional<AsyncWebServiceError> serviceErrorOption = AsyncExceptions.asWebServiceError(throwable);
    if (serviceErrorOption.isPresent()) {
        codeMatch = code.equals(serviceErrorOption.get().getCode());
    }
    return codeMatch;
}

From source file:org.onos.yangtools.yang.data.impl.schema.tree.AbstractDataTreeCandidateNode.java

static DataTreeCandidateNode deltaChild(
        final NormalizedNodeContainer<?, PathArgument, NormalizedNode<?, ?>> oldData,
        final NormalizedNodeContainer<?, PathArgument, NormalizedNode<?, ?>> newData,
        final PathArgument identifier) {

    final Optional<NormalizedNode<?, ?>> maybeNewChild = getChild(newData, identifier);
    final Optional<NormalizedNode<?, ?>> maybeOldChild = getChild(oldData, identifier);
    if (maybeOldChild.isPresent()) {
        final NormalizedNode<?, ?> oldChild = maybeOldChild.get();
        if (maybeNewChild.isPresent()) {
            return AbstractRecursiveCandidateNode.replaceNode(oldChild, maybeNewChild.get());
        } else {/*from w w  w.  ja v  a  2  s  . c o  m*/
            return TO_DELETED_NODE.apply(oldChild);
        }
    } else {
        if (maybeNewChild.isPresent()) {
            return TO_WRITTEN_NODE.apply(maybeNewChild.get());
        } else {
            return null;
        }
    }
}

From source file:org.opendaylight.controller.md.sal.dom.store.impl.tree.TreeNodeUtils.java

public static <T extends StoreTreeNode<T>> T findNodeChecked(final T tree, final InstanceIdentifier path) {
    T current = tree;/*from w  ww  .j av  a2 s .c o  m*/
    List<PathArgument> nested = new ArrayList<>(path.getPath().size());
    for (PathArgument pathArg : path.getPath()) {
        Optional<T> potential = current.getChild(pathArg);
        nested.add(pathArg);
        Preconditions.checkArgument(potential.isPresent(), "Child %s is not present in tree.", nested);
        current = potential.get();
    }
    return current;
}

From source file:utils.PasswordManager.java

/**
 * Encrypt a password. A master password must have been provided in the constructor.
 * @param plain A plain password to be encrypted.
 * @return The encrypted password./* ww w .ja  v  a2  s . c o  m*/
 */
public static String encryptPassword(String plain, Optional<String> masterPassword) {
    Optional<BasicTextEncryptor> encryptor = getEncryptor(masterPassword);
    Preconditions.checkArgument(getEncryptor(masterPassword).isPresent(), ERROR_ENCRY_MSG);

    try {
        return encryptor.get().encrypt(plain);
    } catch (Exception e) {
        throw new RuntimeException("Failed to encrypt password", e);
    }
}

From source file:info.gehrels.voting.singleTransferableVote.VoteState.java

public static <CANDIDATE_TYPE extends Candidate> Optional<VoteState<CANDIDATE_TYPE>> forBallotAndElection(
        Ballot<CANDIDATE_TYPE> ballot, Election<CANDIDATE_TYPE> election) {
    validateThat(ballot, is(notNullValue()));
    validateThat(election, is(notNullValue()));

    Optional<Vote<CANDIDATE_TYPE>> vote = ballot.getVote(election);
    if (!vote.isPresent()) {
        return Optional.absent();
    }/*w ww .j a va 2 s.c  o m*/

    return Optional.of(new VoteState<>(ballot.id, vote.get()));
}