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.opendaylight.bier.driver.common.util.DataGetter.java

public static <T extends DataObject> T readData(DataBroker dataBroker, InstanceIdentifier<T> path) {
    T data = null;//  ww  w . j av  a2s  .  c  o  m
    final ReadOnlyTransaction transaction = dataBroker.newReadOnlyTransaction();
    Optional<T> optionalData;
    try {
        optionalData = transaction.read(LogicalDatastoreType.CONFIGURATION, path).checkedGet();
        if (optionalData.isPresent()) {
            data = optionalData.get();
        } else {
            LOG.debug("{}: Failed to read {}", Thread.currentThread().getStackTrace()[1], path);
        }
    } catch (ReadFailedException e) {
        LOG.warn("Failed to read {} ", path, e);
    }
    transaction.close();
    return data;
}

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

public static Flow getFlow(FlowBuilder flowBuilder, NodeBuilder nodeBuilder, ReadOnlyTransaction readTx,
        final LogicalDatastoreType store) {
    try {//from  w w  w .  ja va2 s  .co  m
        Optional<Flow> data = readTx.read(store, createFlowPath(flowBuilder, nodeBuilder)).get();
        if (data.isPresent()) {
            return data.get();
        }
    } catch (InterruptedException | ExecutionException e) {
        LOG.error("Failed to get flow {}", flowBuilder.getFlowName(), e);
    }

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

From source file:org.opendaylight.sfc.sfc_netconf.provider.api.SfcNetconfReaderWriterAPI.java

public static <T extends DataObject> boolean put(NodeId nodeId, LogicalDatastoreType logicalDatastoreType,
        InstanceIdentifier<T> iid, T dataObject) {
    boolean ret;/*from   w  w  w . j  a  va2s. c  o  m*/
    if (mountPointService == null) {
        mountPointService = SfcNetconfDataProvider.GetNetconfDataProvider().getMountService();
    }
    try {
        Optional<MountPoint> mountPointOptional = mountPointService
                .getMountPoint(NETCONF_TOPO_IID.child(Node.class, new NodeKey(nodeId)));
        DataBroker broker = mountPointOptional.get().getService(DataBroker.class).get();

        WriteTransaction tx = broker.newWriteOnlyTransaction();
        tx.put(logicalDatastoreType, iid, dataObject);
        CheckedFuture<Void, TransactionCommitFailedException> future = tx.submit();
        future.checkedGet();
        ret = true;
    } catch (Exception e) {
        LOG.error("Netconf put failed: {}", e.getMessage());
        ret = false;
    }
    return ret;
}

From source file:org.opendaylight.sfc.sfc_netconf.provider.api.SfcNetconfReaderWriterAPI.java

public static <T extends DataObject> boolean merge(NodeId nodeId, LogicalDatastoreType logicalDatastoreType,
        InstanceIdentifier<T> iid, T dataObject) {
    boolean ret;//w w w.j  ava2  s  .  c o m
    if (mountPointService == null) {
        mountPointService = SfcNetconfDataProvider.GetNetconfDataProvider().getMountService();
    }
    try {
        Optional<MountPoint> mountPointOptional = mountPointService
                .getMountPoint(NETCONF_TOPO_IID.child(Node.class, new NodeKey(nodeId)));
        DataBroker broker = mountPointOptional.get().getService(DataBroker.class).get();

        WriteTransaction tx = broker.newWriteOnlyTransaction();
        tx.merge(logicalDatastoreType, iid, dataObject);
        CheckedFuture<Void, TransactionCommitFailedException> future = tx.submit();
        future.checkedGet();
        ret = true;
    } catch (Exception e) {
        LOG.error("Netconf merge failed: {}", e.getMessage());
        ret = false;
    }
    return ret;
}

From source file:org.opendaylight.sfc.sfc_netconf.provider.api.SfcNetconfReaderWriterAPI.java

public static <T extends DataObject> boolean delete(NodeId nodeId, LogicalDatastoreType logicalDatastoreType,
        InstanceIdentifier<T> iid) {
    boolean ret;// ww  w .j  a  v a2  s  . c  o m
    if (mountPointService == null) {
        mountPointService = SfcNetconfDataProvider.GetNetconfDataProvider().getMountService();
    }
    try {
        Optional<MountPoint> mountPointOptional = mountPointService
                .getMountPoint(NETCONF_TOPO_IID.child(Node.class, new NodeKey(nodeId)));
        DataBroker broker = mountPointOptional.get().getService(DataBroker.class).get();

        WriteTransaction tx = broker.newWriteOnlyTransaction();
        tx.delete(logicalDatastoreType, iid);
        CheckedFuture<Void, TransactionCommitFailedException> future = tx.submit();
        future.checkedGet();
        ret = true;
    } catch (Exception e) {
        LOG.error("Netconf delete failed: {}", e.getMessage());
        ret = false;
    }
    return ret;
}

From source file:com.dangdang.ddframe.job.internal.reg.RegistryCenterFactory.java

/**
 * .//  ww  w  . j a  v a 2s. c  om
 *
 * @param connectString 
 * @param namespace ??
 * @param digest ?
 * @return 
 */
public static CoordinatorRegistryCenter createCoordinatorRegistryCenter(final String connectString,
        final String namespace, final Optional<String> digest) {
    Hasher hasher = Hashing.md5().newHasher().putString(connectString, Charsets.UTF_8).putString(namespace,
            Charsets.UTF_8);
    if (digest.isPresent()) {
        hasher.putString(digest.get(), Charsets.UTF_8);
    }
    HashCode hashCode = hasher.hash();
    if (registryCenterMap.containsKey(hashCode)) {
        return registryCenterMap.get(hashCode);
    }
    ZookeeperConfiguration zkConfig = new ZookeeperConfiguration(connectString, namespace);
    if (digest.isPresent()) {
        zkConfig.setDigest(digest.get());
    }
    CoordinatorRegistryCenter result = new ZookeeperRegistryCenter(zkConfig);
    result.init();
    registryCenterMap.putIfAbsent(hashCode, result);
    return result;
}

From source file:io.mesosphere.mesos.util.ProtoUtils.java

@NotNull
public static Optional<Double> resourceValueDouble(@NotNull final Optional<Resource> resource) {
    if (resource.isPresent()) {
        if (resource.get().getType() != Value.Type.SCALAR) {
            throw new IllegalArgumentException("Resource must be of type SCALAR");
        }//  w ww. j a  v a2  s.  c  om
        return Optional.of(resource.get().getScalar().getValue());
    } else {
        return Optional.absent();
    }
}

From source file:com.dangdang.ddframe.job.lite.internal.reg.RegistryCenterFactory.java

/**
 * ./*from   ww w  .j  av a2s.  co m*/
 *
 * @param connectString 
 * @param namespace ??
 * @param digest ?
 * @return 
 */
public static CoordinatorRegistryCenter createCoordinatorRegistryCenter(final String connectString,
        final String namespace, final Optional<String> digest) {
    Hasher hasher = Hashing.md5().newHasher().putString(connectString, Charsets.UTF_8).putString(namespace,
            Charsets.UTF_8);
    if (digest.isPresent()) {
        hasher.putString(digest.get(), Charsets.UTF_8);
    }
    HashCode hashCode = hasher.hash();
    if (regCenterMap.containsKey(hashCode)) {
        return regCenterMap.get(hashCode);
    }
    ZookeeperConfiguration zkConfig = new ZookeeperConfiguration(connectString, namespace);
    if (digest.isPresent()) {
        zkConfig.setDigest(digest.get());
    }
    CoordinatorRegistryCenter result = new ZookeeperRegistryCenter(zkConfig);
    result.init();
    regCenterMap.putIfAbsent(hashCode, result);
    return result;
}

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

public static Optional<NormalizedNode<?, ?>> findNode(final YangInstanceIdentifier rootPath,
        final NormalizedNode<?, ?> rootNode, final YangInstanceIdentifier childPath) {
    final Optional<YangInstanceIdentifier> relativePath = childPath.relativeTo(rootPath);
    if (relativePath.isPresent()) {
        return findNode(rootNode, relativePath.get());
    } else {//from  w w  w.  j  a  va2  s.  com
        return Optional.absent();
    }
}

From source file:org.opendaylight.controller.netconf.util.messages.NetconfMessageAdditionalHeader.java

public static String toString(String userName, String hostAddress, String port, String transport,
        Optional<String> sessionIdentifier) {
    Preconditions.checkNotNull(userName);
    Preconditions.checkNotNull(hostAddress);
    Preconditions.checkNotNull(port);//from   w ww . jav  a  2  s  . c o  m
    Preconditions.checkNotNull(transport);
    String identifier = sessionIdentifier.isPresent() ? sessionIdentifier.get() : "";
    return "[" + userName + SC + hostAddress + ":" + port + SC + transport + SC + identifier + SC + "]"
            + System.lineSeparator();
}