Example usage for com.google.common.collect Iterables getLast

List of usage examples for com.google.common.collect Iterables getLast

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Introduction

In this page you can find the example usage for com.google.common.collect Iterables getLast.

Prototype

public static <T> T getLast(Iterable<T> iterable)

Source Link

Document

Returns the last element of iterable .

Usage

From source file:com.google.errorprone.bugpatterns.collectionincompatibletype.CompatibleWithMisuse.java

@Override
public Description matchAnnotation(AnnotationTree annoTree, VisitorState state) {
    if (!IS_COMPATIBLE_WITH_ANNOTATION.matches(annoTree, state)) {
        return Description.NO_MATCH;
    }/*w  ww.  ja va  2 s .c  o m*/

    // Hunt for type args on the declared method
    // TODO(glorioso): Once annotation is TYPE_USE, make sure that the node is actually a method
    // parameter
    MethodTree methodTree = ASTHelpers.findEnclosingNode(state.getPath(), MethodTree.class);
    VariableTree paramTree = ASTHelpers.findEnclosingNode(state.getPath(), VariableTree.class);
    MethodSymbol declaredMethod = ASTHelpers.getSymbol(methodTree);

    // We're disallowing tags on varargs methods for now, but we may revisit it in the future.
    if (declaredMethod.isVarArgs() && Iterables.getLast(methodTree.getParameters()) == paramTree) {
        return describeWithMessage(annoTree, "@CompatibleWith can't be used on a varargs parameter");
    }

    // If this method overrides other methods, ensure that none of them have @CompatibleWith.
    // This restriction may need to be removed to allow more complex declaration hierarchies.
    for (MethodSymbol methodSymbol : ASTHelpers.findSuperMethods(declaredMethod, state.getTypes())) {
        if (methodSymbol.params().stream()
                .anyMatch(p -> ASTHelpers.hasAnnotation(p, CompatibleWith.class, state))) {
            return describeWithMessage(annoTree,
                    String.format("This method overrides a method in %s that already has @CompatibleWith",
                            methodSymbol.owner.getSimpleName()));
        }
    }

    List<TypeVariableSymbol> potentialTypeVars = new ArrayList<>(declaredMethod.getTypeParameters());

    // Check enclosing types (not superclasses)
    ClassSymbol cs = (ClassSymbol) declaredMethod.owner;
    do {
        potentialTypeVars.addAll(cs.getTypeParameters());
        cs = cs.isInner() ? cs.owner.enclClass() : null;
    } while (cs != null);

    if (potentialTypeVars.isEmpty()) {
        return describeWithMessage(annoTree, "There are no type arguments in scope to match against.");
    }

    Set<String> validNames = potentialTypeVars.stream().map(TypeVariableSymbol::getSimpleName)
            .map(Object::toString).collect(Collectors.toCollection(LinkedHashSet::new));
    String constValue = valueArgumentFromCompatibleWithAnnotation(annoTree);

    if (constValue == null || constValue.isEmpty()) {
        return describeWithMessage(annoTree,
                String.format("The value of @CompatibleWith must not be empty (valid arguments are %s)",
                        printTypeArgs(validNames)));
    }

    return validNames.contains(constValue) ? Description.NO_MATCH
            : describeWithMessage(annoTree,
                    String.format("%s is not a valid type argument. Valid arguments are: %s", constValue,
                            printTypeArgs(validNames)));
}

From source file:com.cloudera.cdk.data.filesystem.PathConversion.java

public String valueStringForDirname(String name) {
    return Iterables.getLast(PART_SEP.split(name));
}

From source file:is.illuminati.block.spyros.garmin.model.Activity.java

private TrackPoint getLastTrackPoint() {
    Lap lastLap = Iterables.getLast(laps);
    return Iterables.getLast(lastLap.getTrackPoints());
}

From source file:com.github.tmyroadctfig.icloud4j.DriveNode.java

/**
 * Downloads the file data for the item into the given output stream.
 *
 * @param outputStream the output stream to write to.
 */// w  w w.  j a  va  2  s .  co  m
public void downloadFileData(OutputStream outputStream) {
    try {
        URIBuilder uriBuilder = new URIBuilder(
                String.format("%s/ws/%s/download/by_id", driveService.getDocsServiceUrl(), nodeDetails.zone));
        iCloudService.populateUriParameters(uriBuilder);
        uriBuilder.addParameter("clientMasteringNumber", iCloudService.getClientBuildNumber());
        uriBuilder.addParameter("document_id", Iterables.getLast(Splitter.on(":").splitToList(id)));
        uriBuilder.addParameter("token", downloadUrlToken);
        URI contentUrlLookupUrl = uriBuilder.build();

        // Get the download URL for the item
        HttpGet contentUrlGetRequest = new HttpGet(contentUrlLookupUrl);
        iCloudService.populateRequestHeadersParameters(contentUrlGetRequest);

        Map<String, Object> result = iCloudService.getHttpClient().execute(contentUrlGetRequest,
                new JsonToMapResponseHandler());
        @SuppressWarnings("unchecked")
        Map<String, Object> dataTokenMap = (Map<String, Object>) result.get("data_token");

        String contentUrl = (String) dataTokenMap.get("url");
        HttpGet contentRequest = new HttpGet(contentUrl);

        try (InputStream inputStream = iCloudService.getHttpClient().execute(contentRequest).getEntity()
                .getContent()) {
            IOUtils.copyLarge(inputStream, outputStream, new byte[0x10000]);
        }
    } catch (Exception e) {
        throw Throwables.propagate(e);
    }
}

From source file:com.google.template.soy.passes.ResolvePackageRelativeCssNamesPass.java

private void resolveSelector(TemplateNode template, FunctionNode node, @Nullable String packagePrefix) {
    if (node.getSoyFunction() != BuiltinFunction.CSS) {
        return;//from   w  ww  .  j av a 2s .co  m
    }

    ExprNode lastChild = Iterables.getLast(node.getChildren());
    if (!(lastChild instanceof StringNode)) {
        // this will generate an error in CheckFunctionCallsVisitor
        return;
    }

    StringNode selector = (StringNode) Iterables.getLast(node.getChildren());
    String selectorText = selector.getValue();
    if (!selectorText.startsWith(RELATIVE_SELECTOR_PREFIX)) {
        return;
    }

    if (node.numChildren() > 1) {
        errorReporter.report(selector.getSourceLocation(), PACKAGE_RELATIVE_CLASS_NAME_USED_WITH_COMPONENT_NAME,
                selectorText);
    }

    if (packagePrefix == null) {
        errorReporter.report(selector.getSourceLocation(), NO_CSS_PACKAGE, selectorText,
                template.getRequiredCssNamespaces().isEmpty() ? ""
                        : " NOTE: ''requirecss'' on a template is not used to infer the CSS package.");
    }

    // Replace the selector text with resolved selector text
    String prefixed = packagePrefix + selectorText.substring(RELATIVE_SELECTOR_PREFIX.length());
    StringNode newSelector = new StringNode(prefixed, QuoteStyle.SINGLE, selector.getSourceLocation());
    node.replaceChild(selector, newSelector);
}

From source file:org.sonar.php.checks.formatting.NamespaceAndUseStatementCheck.java

private void checkBlankLineAfterUses(UseStatementTree useStatement) {
    if (check.hasUseBlankLine && !isFollowedWithBlankLine(useStatement)) {
        reportIssue(BLANK_LINE_USE_MESSAGE, Iterables.getLast(useStatements));
    }//www .  j  a va2s .  co m
}

From source file:org.apache.aurora.scheduler.base.Tasks.java

public static ITaskEvent getLatestEvent(IScheduledTask task) {
    return Iterables.getLast(task.getTaskEvents());
}

From source file:com.comphenix.xp.parser.Utility.java

/**
 * Creates a shallow copy of the given section that is not referenced by the parent node.
 * @param section - the section to copy.
 * @return A copied configuration section.
 *///from w ww.  j a va2  s.co m
public static ConfigurationSection cloneSection(ConfigurationSection section) {

    MemorySection copy = null;

    // Is this the root node?
    if (section.getParent() == null) {
        if (!(section instanceof MemorySection)) {
            throw new IllegalArgumentException("Only memory configurations can be cloned.");
        }

        Configuration sourceConfig = (Configuration) section;
        Configuration copyConfig = new MemoryConfiguration(sourceConfig.getDefaults());

        try {
            // We're very unlikely to clone a root node in the first place, so who cares
            FieldUtils.writeField(copyConfig, "options", sourceConfig.options(), true);

        } catch (IllegalAccessException e) {
            throw new RuntimeException("Cannot modify options.", e);
        }

    } else {

        String path = Iterables.getLast(
                Splitter.on(section.getRoot().options().pathSeparator()).split(section.getCurrentPath()));
        copy = new ClonableMemorySection(section.getParent(), path);
    }

    // Copy every stored value
    for (String key : section.getKeys(false)) {
        copy.set(key, section.get(key));
    }

    return copy;
}

From source file:org.apache.stratos.cloud.controller.iaases.openstack.networking.NovaNetworkingApi.java

@Override
public List<String> associateAddresses(NodeMetadata node) {

    ComputeServiceContext context = iaasProvider.getComputeService().getContext();
    String region = ComputeServiceBuilderUtil.extractRegion(iaasProvider);

    if (StringUtils.isEmpty(region)) {
        throw new RuntimeException("Could not find region in iaas provider: " + iaasProvider.getName());
    }/* w ww  .j  a v  a2 s. c om*/

    NovaApi novaApi = context.unwrapApi(NovaApi.class);
    FloatingIPApi floatingIPApi = novaApi.getFloatingIPExtensionForZone(region).get();

    String ip = null;
    // first try to find an unassigned IP.
    FluentIterable<FloatingIP> floatingIPs = floatingIPApi.list();
    ArrayList<FloatingIP> unassignedIps = Lists
            .newArrayList(Iterables.filter(floatingIPs, new Predicate<FloatingIP>() {
                @Override
                public boolean apply(FloatingIP floatingIP) {
                    return floatingIP.getInstanceId() == null;
                }
            }));

    if (!unassignedIps.isEmpty()) {
        // try to prevent multiple parallel launches from choosing the same ip.
        Collections.shuffle(unassignedIps);
        ip = Iterables.getLast(unassignedIps).getIp();
    }

    // if no unassigned IP is available, we'll try to allocate an IP.
    if (StringUtils.isEmpty(ip)) {
        String floatingIpPool = iaasProvider.getProperty(CloudControllerConstants.DEFAULT_FLOATING_IP_POOL);
        FloatingIP allocatedFloatingIP;
        if (StringUtils.isEmpty(floatingIpPool)) {
            allocatedFloatingIP = floatingIPApi.create();
        } else {
            log.debug(
                    String.format("Trying to allocate a floating IP address from IP pool %s", floatingIpPool));
            allocatedFloatingIP = floatingIPApi.allocateFromPool(floatingIpPool);
        }
        if (allocatedFloatingIP == null) {
            String msg = String.format("Floating IP API did not return a floating IP address from IP pool %s",
                    floatingIpPool);
            log.error(msg);
            throw new CloudControllerException(msg);
        }
        ip = allocatedFloatingIP.getIp();
    }

    // wait till the fixed IP address gets assigned - this is needed before
    // we associate a public IP
    log.info(String.format("Waiting for private IP addresses get allocated: [node-id] %s", node.getId()));
    while (node.getPrivateAddresses() == null) {
        CloudControllerUtil.sleep(1000);
    }
    log.info(String.format("Private IP addresses allocated: %s", node.getPrivateAddresses()));

    if ((node.getPublicAddresses() != null) && (node.getPublicAddresses().iterator().hasNext())) {
        log.info("Public IP address " + node.getPublicAddresses().iterator().next()
                + " is already allocated to the instance: [node-id]  " + node.getId());
        return null;
    }

    int retries = 0;
    int retryCount = Integer.getInteger("stratos.public.ip.association.retry.count", 5);
    while ((retries < retryCount) && (!associateIp(floatingIPApi, ip, node.getProviderId()))) {
        // wait for 5s
        CloudControllerUtil.sleep(5000);
        retries++;
    }

    log.info(String.format("Successfully associated an IP address: [node-id] %s [ip] %s", node.getId(), ip));

    List<String> allocatedIPAddresses = new ArrayList<String>();
    allocatedIPAddresses.add(ip);
    return allocatedIPAddresses;
}

From source file:org.apache.metron.spout.pcap.HDFSWriterConfig.java

public Integer getZookeeperPort() {
    if (zookeeperQuorum != null) {
        String hostPort = Iterables.getFirst(Splitter.on(',').split(zookeeperQuorum), null);
        String portStr = Iterables.getLast(Splitter.on(':').split(hostPort));
        return Integer.parseInt(portStr);
    }/* www.  j  a  v a 2s .  c  om*/
    return null;
}