Example usage for com.google.common.io ByteStreams nullOutputStream

Introduction

In this page you can find the example usage for com.google.common.io ByteStreams nullOutputStream.

Prototype

public static OutputStream nullOutputStream()

Source Link

Document

Returns an OutputStream that simply discards written bytes.

Usage

From source file:org.haiku.haikudepotserver.pkg.job.PkgScreenshotImportArchiveJobRunner.java

/**
 * <p>Goes through the archive and captures information about each screenshot.</p>
 */// www.  j  a  v a 2s  .  com

private void collectScreenshotMetadataFromArchive(Map<String, ScreenshotImportMetadatas> data,
        ArchiveInputStream archiveInputStream, ArchiveEntry archiveEntry, String pkgName, int order) {

    ScreenshotImportMetadatas metadatas = data.get(pkgName);

    if (null == metadatas) {
        metadatas = new ScreenshotImportMetadatas();
        ObjectContext context = serverRuntime.newContext();
        Optional<Pkg> pkgOptional = Pkg.tryGetByName(context, pkgName);

        if (!pkgOptional.isPresent()) {
            metadatas.setNotFound();
        }

        data.put(pkgName, metadatas);
    }

    if (!metadatas.isNotFound()) {
        HashingInputStream hashingInputStream = new HashingInputStream(HASH_FUNCTION, archiveInputStream);

        try {
            ByteStreams.copy(hashingInputStream, ByteStreams.nullOutputStream());
        } catch (IOException ioe) {
            throw new UncheckedIOException(ioe);
        }

        metadatas.add(new FromArchiveScreenshotMetadata(order, archiveEntry.getSize(),
                hashingInputStream.hash(), archiveEntry.getName()));
    }
}

From source file:io.macgyver.plugin.cmdb.AppInstanceManager.java

public String computeSignature(ObjectNode n, Set<String> exclusions) {
    List<String> list = Lists.newArrayList(n.fieldNames());
    Collections.sort(list);//  www . j a  v a  2 s  . co m

    HashingOutputStream hos = new HashingOutputStream(Hashing.sha1(), ByteStreams.nullOutputStream());

    list.forEach(it -> {

        if (exclusions != null && !exclusions.contains(it)) {
            JsonNode val = n.get(it);
            if (val.isObject() || val.isArray()) {
                // skipping
            } else {
                try {
                    hos.write(it.getBytes());
                    hos.write(val.toString().getBytes());
                } catch (IOException e) {
                }
            }
        }
    });

    return hos.hash().toString();

}

From source file:org.apache.beam.sdk.coders.Coder.java

/**
 * Returns the size in bytes of the encoded value using this coder.
 *///from w  w  w. j a  v  a 2 s . co  m
protected long getEncodedElementByteSize(T value) throws Exception {
    try (CountingOutputStream os = new CountingOutputStream(ByteStreams.nullOutputStream())) {
        encode(value, os);
        return os.getCount();
    } catch (Exception exn) {
        throw new IllegalArgumentException(
                "Unable to encode element '" + value + "' with coder '" + this + "'.", exn);
    }
}

From source file:ru.runa.wf.logic.bot.WebServiceTaskHandler.java

/**
 * Called to process response from web service with code from [200; 299]
 * (This codes indicates successful request processing).
 * //from   w ww.  ja va 2 s .  c o m
 * @param task
 *            Current task instance to be processed.
 * @param connection
 *            HTTP connection to communicate with web service.
 * @param interaction
 *            Current processing interaction.
 */
private void onResponse(WfTask task, HttpURLConnection connection, Interaction interaction) throws Exception {
    if (interaction.responseXSLT == null && interaction.responseVariable == null) {
        return;
    }
    String response = logResponseAndSetVariable(task, connection, interaction);
    InputStream inputStream = response == null ? connection.getInputStream()
            : new ByteArrayInputStream(response.getBytes(settings.encoding));
    if (interaction.responseXSLT != null) {
        Transformer transformer = TransformerFactory.newInstance().newTransformer(new StreamSource(
                new ByteArrayInputStream(interaction.responseXSLT.getBytes(settings.encoding))));
        transformer.transform(new StreamSource(inputStream), new StreamResult(ByteStreams.nullOutputStream()));
    }
}

From source file:org.apache.beam.sdk.testing.CoderProperties.java

/**
 * A utility method that passes the given (unencoded) elements through
 * coder's registerByteSizeObserver() and encode() methods, and confirms
 * they are mutually consistent. This is useful for testing coder
 * implementations.//w w w . j av a 2 s.  c  o  m
 */
public static <T> void testByteCount(Coder<T> coder, Coder.Context context, T[] elements) throws Exception {
    TestElementByteSizeObserver observer = new TestElementByteSizeObserver();

    try (CountingOutputStream os = new CountingOutputStream(ByteStreams.nullOutputStream())) {
        for (T elem : elements) {
            coder.registerByteSizeObserver(elem, observer);
            coder.encode(elem, os, context);
            observer.advance();
        }
        long expectedLength = os.getCount();

        if (!context.isWholeStream) {
            assertEquals(expectedLength, observer.getSum());
        }
        assertEquals(elements.length, observer.getCount());
    }
}

From source file:edu.byu.nlp.al.app.CrowdsourcingActiveMeasurement.java

private static PrintWriter nullWriter() {
    return new PrintWriter(ByteStreams.nullOutputStream());
}

From source file:edu.byu.nlp.crowdsourcing.models.gibbs.BlockCollapsedMultiAnnModel.java

/** {@inheritDoc} */
@Override//from ww  w  .jav a  2 s .  c  o  m
public DatasetLabeler getIntermediateLabeler() {
    final MultiAnnModel thisModel = this;
    return new DatasetLabeler() {
        @Override
        public Predictions label(Dataset trainingInstances, Dataset heldoutInstances) {
            return new MultiAnnDatasetLabeler(thisModel, new PrintWriter(ByteStreams.nullOutputStream()), true,
                    DiagonalizationMethod.NONE, false, 0, trainingInstances, rnd).label(trainingInstances,
                            heldoutInstances);
        }
    };
}