Example usage for com.google.common.io Closeables closeQuietly

Introduction

In this page you can find the example usage for com.google.common.io Closeables closeQuietly.

Prototype

public static void closeQuietly(@Nullable Reader reader)

Source Link

Document

Closes the given Reader , logging any IOException that's thrown rather than propagating it.

Usage

From source file:io.druid.query.ReferenceCountingSegmentQueryRunner.java

@Override
public Sequence<T> run(final Query<T> query) {
    final Closeable closeable = adapter.increment();
    try {//from   www.  j a va2 s . c  om
        final Sequence<T> baseSequence = factory.createRunner(adapter).run(query);

        return new ResourceClosingSequence<T>(baseSequence, closeable);
    } catch (RuntimeException e) {
        Closeables.closeQuietly(closeable);
        throw e;
    }
}

From source file:org.apache.mahout.clustering.spectral.common.VectorCache.java

/**
 * /*from www .  j a va  2 s .c  o  m*/
 * @param key SequenceFile key
 * @param vector Vector to save, to be wrapped as VectorWritable
 */
public static void save(Writable key, Vector vector, Path output, Configuration conf, boolean overwritePath,
        boolean deleteOnExit) throws IOException {

    FileSystem fs = FileSystem.get(output.toUri(), conf);
    output = fs.makeQualified(output);
    if (overwritePath) {
        HadoopUtil.delete(conf, output);
    }

    // set the cache
    DistributedCache.setCacheFiles(new URI[] { output.toUri() }, conf);

    // set up the writer
    SequenceFile.Writer writer = new SequenceFile.Writer(fs, conf, output, IntWritable.class,
            VectorWritable.class);
    try {
        writer.append(key, new VectorWritable(vector));
    } finally {
        Closeables.closeQuietly(writer);
    }

    if (deleteOnExit) {
        fs.deleteOnExit(output);
    }
}

From source file:com.netflix.exhibitor.core.controlpanel.FileBasedPreferences.java

/**
 * @param file file to use as backing store
 * @throws IOException errors// w ww  .  j a  v  a 2 s . c  om
 */
public FileBasedPreferences(File file) throws IOException {
    super(null, "");
    this.file = file;

    if (file.exists()) {
        BufferedInputStream in = new BufferedInputStream(new FileInputStream(file));
        try {
            properties.load(in);
        } finally {
            Closeables.closeQuietly(in);
        }
    }
}

From source file:org.trancecode.asciidoc.Archives.java

private static File unzipEntry(final ZipFile archive, final ZipEntry entry, final File targetDirectory)
        throws IOException {
    if (entry.isDirectory()) {
        final File directory = new File(targetDirectory, entry.getName());
        mkdirs(directory);/* w  w w. j av  a 2 s . c  o m*/
        return directory;
    }

    final File outputFile = new File(targetDirectory, entry.getName());
    if (!outputFile.getParentFile().exists()) {
        mkdirs(outputFile.getParentFile());
    }

    BufferedInputStream in = null;
    BufferedOutputStream out = null;
    try {
        in = new BufferedInputStream(archive.getInputStream(entry));
        out = new BufferedOutputStream(new FileOutputStream(outputFile));
        ByteStreams.copy(in, out);
    } finally {
        Closeables.closeQuietly(out);
        Closeables.closeQuietly(in);
    }

    return outputFile;
}

From source file:org.apache.mahout.graph.GraphTestCase.java

protected <T extends WritableComparable> void writeComponents(File destination, Configuration conf,
        Class<T> componentClass, T... components) throws IOException {
    Path path = new Path(destination.getAbsolutePath());
    FileSystem fs = FileSystem.get(path.toUri(), conf);

    SequenceFile.Writer writer = new SequenceFile.Writer(fs, conf, path, componentClass, NullWritable.class);
    try {//from w  ww . ja v  a  2s .  c o m
        for (T component : components) {
            writer.append(component, NullWritable.get());
        }
    } finally {
        Closeables.closeQuietly(writer);
    }
}

From source file:com.andreasfink.utils.text.Charsets.java

public static String detectCharset(final File file) {
    final FileInputStream fis;

    try {//w w  w  . j  ava2  s.  c  om
        fis = new FileInputStream(file);
    } catch (final FileNotFoundException e) {
        throw new IllegalArgumentException("Unable to detect charset!", e);
    }

    final String encoding = detectCharset(fis);
    Closeables.closeQuietly(fis);

    return encoding;
}

From source file:com.facebook.tsdb.tsdash.server.PlotImageEndpoint.java

@Override
protected void doGet(final HttpServletRequest req, final HttpServletResponse resp)
        throws ServletException, IOException {
    resp.setContentType("image/png");

    final String filename = new File(req.getPathInfo()).getName();

    File file = new File(TsdbServlet.plotsDir, filename);
    FileInputStream in = new FileInputStream(file);

    resp.setBufferSize(BUFFER_SIZE);//w ww  . j  a va 2s .  co m

    final ServletOutputStream out = resp.getOutputStream();

    try {
        byte[] buffer = new byte[1024];
        while ((in.read(buffer)) != -1) {
            out.write(buffer);
        }
    } finally {
        Closeables.closeQuietly(in);
    }

    out.flush();
    resp.flushBuffer();
}

From source file:com.nesscomputing.migratory.loader.UTF8StringContentConverter.java

@Override
public String convert(HttpRequest httpClientRequest, HttpResponse httpClientResponse, InputStream inputStream)
        throws IOException {
    final int responseCode = httpClientResponse.getStatusLine().getStatusCode();
    switch (responseCode) {
    case 200:/* w w  w .j a  v a 2s  .  c om*/
    case 201:
        final InputStreamReader reader = new InputStreamReader(inputStream, Charsets.UTF_8);

        try {
            return CharStreams.toString(reader);
        } finally {
            Closeables.closeQuietly(reader);
        }

    case 204:
        return "";

    default:
        throw new IOException("Could not load file from " + httpClientRequest.getRequestLine().getUri() + " ("
                + httpClientResponse.getStatusLine().getStatusCode() + ")");
    }
}

From source file:org.apache.mahout.classifier.sequencelearning.hmm.hadoop.MapWritableCache.java

/**
 * Wraps a (Key, MapWritable) into a sequence file and stores it to the specified directory.
 *
 * @param key           key of the SequenceFile
 * @param map           MapWritable to be stored
 * @param output        directory where the sequence file should be stored
 * @param conf          configuration// w ww .j  a va2s.  c o m
 * @param overwritePath if true, overwrite the file present in the output directory
 * @param deleteOnExit  if true. deletes the map on exiting
 * @throws IOException
 */
public static void save(Writable key, MapWritable map, Path output, Configuration conf, boolean overwritePath,
        boolean deleteOnExit) throws IOException {

    FileSystem fs = FileSystem.get(conf);
    output = fs.makeQualified(output);
    if (overwritePath) {
        HadoopUtil.delete(conf, output);
    }

    // set the cache
    DistributedCache.setCacheFiles(new URI[] { output.toUri() }, conf);

    // set up the writer
    SequenceFile.Writer writer = new SequenceFile.Writer(fs, conf, output, IntWritable.class,
            MapWritable.class);
    try {
        writer.append(key, new MapWritable(map));
    } finally {
        Closeables.closeQuietly(writer);
    }

    if (deleteOnExit) {
        fs.deleteOnExit(output);
    }
}

From source file:org.sonar.plugins.pmd.SonarWayProfile.java

@Override
public RulesProfile createProfile(ValidationMessages validation) {
    Reader config = null;/* w w w. j a  v a  2  s .co  m*/
    try {
        config = new InputStreamReader(
                this.getClass().getResourceAsStream("/org/sonar/plugins/pmd/profile-sonar-way.xml"));

        RulesProfile profile = importer.importProfile(config, validation);
        profile.setLanguage(Java.KEY);
        profile.setName(RulesProfile.SONAR_WAY_NAME);

        return profile;
    } finally {
        Closeables.closeQuietly(config);
    }
}