Example usage for java.util Optional isPresent

Introduction

In this page you can find the example usage for java.util Optional isPresent.

Prototype

public boolean isPresent() 

Source Link

Document

If a value is present, returns true , otherwise false .

Usage

From source file:io.github.retz.scheduler.MesosHTTPFetcher.java

public static Optional<String> sandboxUri(String t, String master, String slaveId, String frameworkId,
        String executorId) {/* www  .  j  ava2 s  .  c  om*/

    Optional<String> slaveAddr = fetchSlaveAddr(master, slaveId); // get master:5050/slaves with slaves/pid, cut with '@'
    LOG.debug("Agent address of executor {}: {}", executorId, slaveAddr);

    if (!slaveAddr.isPresent()) {
        return Optional.empty();
    }

    Optional<String> dir = fetchDirectory(slaveAddr.get(), frameworkId, executorId);
    if (!dir.isPresent()) {
        return Optional.empty();
    }

    try {
        return Optional.of(String.format("http://%s/files/%s?path=%s", slaveAddr.get(), t,
                java.net.URLEncoder.encode(dir.get(), //builder.toString(),
                        java.nio.charset.StandardCharsets.UTF_8.toString())));
    } catch (UnsupportedEncodingException e) {
        return Optional.empty();
    }
}

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From source file:io.github.retz.web.JobRequestHandler.java

private static Optional<Job> getJobAndVerify(Request req) throws IOException {
    int id = Integer.parseInt(req.params(":id"));
    Optional<AuthHeader> authHeaderValue = WebConsole.getAuthInfo(req);

    if (!authHeaderValue.isPresent()) {
        LOG.debug("Authorization header lacking?");
        return Optional.empty();
    }//from  w  w w  . j  a  v a2 s.c  o m
    LOG.debug("get-xxx id={}, user={}", id, authHeaderValue.get().key());

    Optional<AppJobPair> maybePair = Database.getInstance().getAppJob(id);
    if (maybePair.isPresent()) {
        AppJobPair pair = maybePair.get();
        if (pair.application().getOwner().equals(authHeaderValue.get().key())) {
            return Optional.of(pair.job());
        }
    }
    return Optional.empty();
}

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From source file:com.spectralogic.ds3contractcomparator.print.htmlprinter.generators.row.ModifiedHtmlRowGenerator.java

/**
 * Recursively traverses two objects using reflection and constructs the modified
 * rows that represent the changes and differences between the objects.
 *///from ww  w. j  a  va 2  s .c o  m
public static <T> ImmutableList<Row> createModifiedRows(final T oldObject, final T newObject,
        final int indent) {
    if (oldObject == null && newObject == null) {
        return ImmutableList.of();
    }
    final Field[] fields = getFields(oldObject, newObject);
    final ImmutableList.Builder<Row> builder = ImmutableList.builder();

    for (final Field field : fields) {
        final String property = field.getName();

        final Optional<String> oldValue = getPropertyValue(oldObject, property);
        final Optional<String> newValue = getPropertyValue(newObject, property);

        if (oldValue.isPresent() || newValue.isPresent()) {
            final int fieldIndent = toModifiedFieldIndent(indent, oldObject, newObject, field);
            if (field.getType() == ImmutableList.class) {
                //Field is a list, recursively print each element in the list
                builder.add(new NoChangeRow(fieldIndent, property, ""));

                final ImmutableList<Object> oldObjList = getListPropertyFromObject(field, oldObject);
                final ImmutableList<Object> newObjList = getListPropertyFromObject(field, newObject);

                if (hasContent(oldObjList) || hasContent(newObjList)) {
                    final String uniqueProperty = getPropertyNameFromList(oldObjList, newObjList);

                    final ImmutableSet<String> parameterUnion = toPropertyUnion(oldObjList, newObjList,
                            uniqueProperty);
                    final ImmutableMap<String, Object> oldMap = toPropertyMap(oldObjList, uniqueProperty);
                    final ImmutableMap<String, Object> newMap = toPropertyMap(newObjList, uniqueProperty);

                    parameterUnion.forEach(param -> builder
                            .addAll(createModifiedRows(oldMap.get(param), newMap.get(param), fieldIndent + 1)));
                }
            } else if (oldValue.isPresent() && newValue.isPresent() && oldValue.get().equals(newValue.get())) {
                //Element is the same in both contracts
                builder.add(new NoChangeRow(fieldIndent, property, oldValue.get()));
            } else {
                //Element is different between old and new contracts
                builder.add(new ModifiedRow(fieldIndent, property, oldValue.orElse(RowConstants.NA),
                        newValue.orElse(RowConstants.NA)));
            }
        }
    }
    return builder.build();
}

---

From source file:com.skelril.skree.content.registry.item.zone.ZoneItemUtil.java

public static boolean playerAlreadyHasInvite(ItemStack stack, Player target) {
    UUID zoneID = getZoneID(stack).orElseThrow(() -> new IllegalArgumentException("Illegal zone ItemStack"));
    ItemStack[] inv = tf(target).inventory.mainInventory;
    for (ItemStack aStack : inv) {
        Optional<UUID> optZoneID = getZoneID(aStack);
        if (optZoneID.isPresent()) {
            if (zoneID.equals(optZoneID.get())) {
                return true;
            }/*from w ww .ja  v  a  2s  .  c om*/
        }
    }
    return false;
}

---

From source file:com.skelril.skree.content.registry.item.zone.ZoneItemUtil.java

public static boolean notifyGroupOwner(ItemStack stack, Player holder, boolean joined) {
    Validate.isTrue(isZoneSlaveItem(stack));
    Optional<Player> optPlayer = getGroupOwner(stack);
    if (optPlayer.isPresent()) {
        Player player = optPlayer.get();
        if (joined) {
            if (incrementCount(stack, player)) {
                player.sendMessage(//from   w  ww .j  a v  a 2s.co m
                        Text.of(TextColors.GOLD, holder.getName() + " has accepted your invitation."));
            }
        } else {
            if (!isAttuned(stack) || decrementCount(stack, player)) {
                player.sendMessage(
                        Text.of(TextColors.RED, holder.getName() + " has declined your invitation."));
            }
        }
        return true;
    }
    return false;
}

---

From source file:net.fabricmc.loom.task.DownloadTask.java

public static void downloadMcJson(LoomGradleExtension extension, Logger logger) throws IOException {
    if (!Constants.MINECRAFT_JSON.get(extension).exists()) {
        logger.lifecycle(":downloading minecraft json");
        FileUtils.copyURLToFile(new URL("https://launchermeta.mojang.com/mc/game/version_manifest.json"),
                Constants.VERSION_MANIFEST.get(extension));
        ManifestVersion mcManifest = new GsonBuilder().create().fromJson(
                FileUtils.readFileToString(Constants.VERSION_MANIFEST.get(extension), "UTF-8"),
                ManifestVersion.class);

        Optional<ManifestVersion.Versions> optionalVersion = mcManifest.versions.stream()
                .filter(versions -> versions.id.equalsIgnoreCase(extension.version)).findFirst();
        if (optionalVersion.isPresent()) {
            FileUtils.copyURLToFile(new URL(optionalVersion.get().url),
                    Constants.MINECRAFT_JSON.get(extension));
        } else {/*from  ww w .  j  a v  a 2  s. c  o  m*/
            logger.info(":failed downloading minecraft json");
            throw new RuntimeException("Failed downloading Minecraft json");
        }
    }
}

---

From source file:com.spotify.styx.docker.KubernetesPodEventTranslator.java

private static Optional<Event> isInErrorState(WorkflowInstance workflowInstance, Pod pod) {
    final PodStatus status = pod.getStatus();
    final String phase = status.getPhase();

    switch (phase) {
    case "Pending":
        // check if one or more docker contains failed to pull their image, a possible silent error
        return status.getContainerStatuses().stream()
                .filter(IS_STYX_CONTAINER.and(KubernetesPodEventTranslator::hasPullImageError)).findAny()
                .map((x) -> Event.runError(workflowInstance,
                        "One or more containers failed to pull their image"));

    case "Succeeded":
    case "Failed":
        final Optional<ContainerStatus> containerStatusOpt = pod.getStatus().getContainerStatuses().stream()
                .filter(IS_STYX_CONTAINER).findFirst();

        if (!containerStatusOpt.isPresent()) {
            return Optional.of(Event.runError(workflowInstance, "Could not find our container in pod"));
        }// w  w  w  .  j av a  2 s.  c o m

        final ContainerStatus containerStatus = containerStatusOpt.get();
        final ContainerStateTerminated terminated = containerStatus.getState().getTerminated();
        if (terminated == null) {
            return Optional.of(Event.runError(workflowInstance, "Unexpected null terminated status"));
        }
        return Optional.empty();

    case "Unknown":
        return Optional.of(Event.runError(workflowInstance, "Pod entered Unknown phase"));

    default:
        return Optional.empty();
    }
}

---

From source file:info.archinnov.achilles.internals.parser.CodecFactory.java

public static CodecContext buildCodecContext(AptUtils aptUtils, AnnotationMirror codecFromType) {
    Optional<Class<Codec>> codecClassO = getElementValueClass(codecFromType, "value", false);
    if (codecClassO.isPresent()) {
        Class<Codec> codecClass = codecClassO.get();
        List<Type> genericTypes = Arrays.asList(codecClass.getGenericInterfaces());

        final List<TypeName> codecTypes = genericTypes.stream().filter(x -> x instanceof ParameterizedType)
                .map(x -> (ParameterizedType) x)
                .filter(x -> x.getRawType().getTypeName()
                        .equals(info.archinnov.achilles.type.codec.Codec.class.getCanonicalName()))
                .flatMap(x -> Arrays.asList(x.getActualTypeArguments()).stream()).map(TypeName::get)
                .collect(Collectors.toList());
        aptUtils.validateTrue(codecTypes.size() == 2,
                "Codec class '%s' should have 2 parameters: Codec<FROM, TO>", codecClass);
        return new CodecContext(ClassName.get(codecClass), codecTypes.get(0), codecTypes.get(1));
    } else {/*from  www.j a v a  2  s. c  om*/
        return buildCodecContext(aptUtils, getElementValueClassName(codecFromType, "value", false).toString());
    }
}

---

From source file:io.github.retz.web.JobRequestRouter.java

public static String getFile(spark.Request req, spark.Response res) throws IOException {
    int id = Integer.parseInt(req.params(":id"));

    String file = req.queryParams("path");
    long offset = Long.parseLong(req.queryParams("offset"));
    long length = Long.parseLong(req.queryParams("length"));
    Optional<Job> job = JobQueue.getJob(id);

    LOG.debug("get-file: id={}, path={}, offset={}, length={}", id, file, offset, length);
    res.type("application/json");

    Optional<FileContent> fileContent;
    if (job.isPresent() && job.get().url() != null // If url() is null, the job hasn't yet been started at Mesos
            && statHTTPFile(job.get().url(), file)) {
        String payload = fetchHTTPFile(job.get().url(), file, offset, length);
        LOG.debug("Payload length={}, offset={}", payload.length(), offset);
        // TODO: what the heck happens when a file is not UTF-8 encodable???? How Mesos works?
        fileContent = Optional.ofNullable(MAPPER.readValue(payload, FileContent.class));
    } else {//  w  w  w.  j  a v  a 2  s. c  o m
        fileContent = Optional.empty();
    }
    GetFileResponse getFileResponse = new GetFileResponse(job, fileContent);
    getFileResponse.ok();
    res.status(200);

    return MAPPER.writeValueAsString(getFileResponse);
}

---

From source file:com.github.horrorho.inflatabledonkey.file.FileStreamWriter.java

public static boolean copy(InputStream in, OutputStream out, Optional<XFileKey> keyCipher,
        Optional<byte[]> signature, Optional<IOFunction<InputStream, InputStream>> decompress)
        throws IOException {

    Digest digest = signature.flatMap(FileSignature::type).orElse(FileSignature.ONE).newDigest();

    DigestInputStream dis = new DigestInputStream(in, digest);

    InputStream fis = decryptStream(dis, keyCipher);

    if (decompress.isPresent()) {
        logger.info("-- copy() - decompressing");
        fis = decompress.get().apply(fis);
    }//from  ww  w  .  ja  v a 2  s  .c om

    IOUtils.copyLarge(fis, out, new byte[BUFFER_SIZE]);
    out.flush();

    return testSignature(dis.getDigest(), signature);
}

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