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

List of usage examples for com.google.common.io Closeables closeQuietly

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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:co.cask.cdap.data.file.LiveFileReader.java

@Override
public int read(Collection<? super T> events, int maxEvents, long timeout, TimeUnit unit, ReadFilter readFilter)
        throws IOException, InterruptedException {
    if (currentReader == null) {
        currentReader = renewReader();//from   w  w  w .j a v a 2  s . c  om
    }
    // No data yet
    if (currentReader == null) {
        return 0;
    }

    long startTime = System.nanoTime();
    int eventCount = currentReader.read(events, maxEvents, timeout, unit, readFilter);
    long timeElapse = System.nanoTime() - startTime;

    if (eventCount > 0) {
        return eventCount;
    }

    if (nextReader == null) {
        nextReader = renewReader();
    }

    if (nextReader != null) {
        long readTimeout = unit.toNanos(timeout) - timeElapse;
        if (readTimeout < 0) {
            readTimeout = 0;
        }

        if (eventCount == 0) {
            // Not yet EOF. Since next reader is already available, it could either be the reader doesn't see
            // the last flush from the writer in the read() above or the writer actually crashed.
            // To handle these cases, an extra read is done when a new reader is available but current read
            // gives no event, so that
            // 1. If the writer properly closed the file, by the time we see a new file here, an extra read should be
            //    able to see events till the end of file, as writer won't create new file before old one is closed.
            // 2. If the writer crashed, an extra read will still yield no event, but that's ok, as no more write will
            //    be happening to the old file.
            eventCount = currentReader.read(events, maxEvents, readTimeout, TimeUnit.NANOSECONDS, readFilter);
        }

        if (eventCount <= 0) {
            // Only switch reader when nothing get read above as it guaranteed no more events can come from the
            // currentReader since new file is already available.
            Closeables.closeQuietly(currentReader);
            currentReader = nextReader;
            nextReader = null;

            // If it's EOF, ok to read from new reader one more time without adjusting the readTime because a EOF
            // read (happened above) should return immediately.
            // Otherwise, if no events from current reader, it's safe to read from the new one, but with 0 timeout,
            // assuming the read happened above used up all readTimeout allowed time.
            if (eventCount < 0) {
                eventCount = currentReader.read(events, maxEvents, readTimeout, TimeUnit.NANOSECONDS,
                        readFilter);
            } else {
                eventCount = currentReader.read(events, maxEvents, 0, TimeUnit.NANOSECONDS, readFilter);
            }
        }
    }

    // It never reach EOF
    return (eventCount < 0) ? 0 : eventCount;
}

From source file:net.oneandone.troilus.EmbeddedCassandra.java

@SuppressWarnings("unchecked")
protected static int prepare() throws IOException {

    String cassandraDirName = "target" + File.separator + "cassandra-junit-" + new Random().nextInt(1000000);

    File cassandraDir = new File(cassandraDirName);
    cassandraDir.mkdirs();//from   w w w.  ja va 2s .  com

    InputStream cassandraConfigurationInput = null;
    Writer cassandraConfigurationOutput = null;

    try {
        ClassLoader loader = Thread.currentThread().getContextClassLoader();
        cassandraConfigurationInput = loader.getResourceAsStream(CASSANDRA_YAML_FILE);

        Yaml yaml = new Yaml();
        Map<String, Object> cassandraConfiguration = (Map<String, Object>) yaml
                .load(cassandraConfigurationInput);

        int rpcPort = findUnusedLocalPort();
        if (rpcPort == -1) {
            throw new RuntimeException("Can not start embedded cassandra: no unused local port found!");
        }
        cassandraConfiguration.put("rpc_port", rpcPort);

        int storagePort = findUnusedLocalPort();
        if (storagePort == -1) {
            throw new RuntimeException("Can not start embedded cassandra: no unused local port found!");
        }
        cassandraConfiguration.put("storage_port", storagePort);

        int nativeTransportPort = findUnusedLocalPort();
        if (nativeTransportPort == -1) {
            throw new RuntimeException("Can not start embedded cassandra: no unused local port found!");
        }
        cassandraConfiguration.put("native_transport_port", nativeTransportPort);

        cassandraConfiguration.put("start_native_transport", "true");

        cassandraConfigurationOutput = new OutputStreamWriter(
                new FileOutputStream(cassandraDirName + File.separator + CASSANDRA_YAML_FILE), Charsets.UTF_8);

        yaml.dump(cassandraConfiguration, cassandraConfigurationOutput);

        System.setProperty("cassandra.config",
                new File(cassandraDirName, CASSANDRA_YAML_FILE).toURI().toString());
        System.setProperty("cassandra-foreground", "true");

        DatabaseDescriptor.createAllDirectories();

        return nativeTransportPort;

    } finally {
        Closeables.closeQuietly(cassandraConfigurationInput);
        Closeables.close(cassandraConfigurationOutput, true);
    }
}

From source file:org.locationtech.geogig.cli.porcelain.Apply.java

@Override
public void runInternal(GeogigCLI cli) throws IOException {
    checkParameter(patchFiles.size() < 2, "Only one single patch file accepted");
    checkParameter(!patchFiles.isEmpty(), "No patch file specified");

    ConsoleReader console = cli.getConsole();
    GeoGIG geogig = cli.getGeogig();/*  www.  j  a v  a2 s .c  o  m*/

    File patchFile = new File(patchFiles.get(0));
    checkParameter(patchFile.exists(), "Patch file cannot be found");
    FileInputStream stream;
    try {
        stream = new FileInputStream(patchFile);
    } catch (FileNotFoundException e1) {
        throw new CommandFailedException("Can't open patch file " + patchFile, e1);
    }
    BufferedReader reader = null;
    try {
        reader = new BufferedReader(new InputStreamReader(stream, "UTF-8"));
    } catch (UnsupportedEncodingException e) {
        Closeables.closeQuietly(reader);
        Closeables.closeQuietly(stream);
        throw new CommandFailedException("Error reading patch file " + patchFile, e);
    }
    Patch patch = PatchSerializer.read(reader);
    Closeables.closeQuietly(reader);
    Closeables.closeQuietly(stream);

    if (reverse) {
        patch = patch.reversed();
    }

    if (summary) {
        console.println(patch.toString());
    } else if (check) {
        VerifyPatchResults verify = cli.getGeogig().command(VerifyPatchOp.class).setPatch(patch).call();
        Patch toReject = verify.getToReject();
        Patch toApply = verify.getToApply();
        if (toReject.isEmpty()) {
            console.println("Patch can be applied.");
        } else {
            console.println("Error: Patch cannot be applied\n");
            console.println("Applicable entries:\n");
            console.println(toApply.toString());
            console.println("\nConflicting entries:\n");
            console.println(toReject.toString());
        }
    } else {
        try {
            Patch rejected = geogig.command(ApplyPatchOp.class).setPatch(patch).setApplyPartial(reject).call();
            if (reject) {
                if (rejected.isEmpty()) {
                    console.println("Patch applied succesfully");
                } else {
                    int accepted = patch.count() - rejected.count();
                    StringBuilder sb = new StringBuilder();
                    File file = new File(patchFile.getAbsolutePath() + ".rej");
                    sb.append("Patch applied only partially.\n");
                    sb.append(Integer.toString(accepted) + " changes were applied.\n");
                    sb.append(Integer.toString(rejected.count()) + " changes were rejected.\n");
                    BufferedWriter writer = Files.newWriter(file, Charsets.UTF_8);
                    PatchSerializer.write(writer, patch);
                    writer.flush();
                    writer.close();
                    sb.append("Patch file with rejected changes created at " + file.getAbsolutePath() + "\n");
                    throw new CommandFailedException(sb.toString());
                }
            } else {
                console.println("Patch applied succesfully");
            }
        } catch (CannotApplyPatchException e) {
            throw new CommandFailedException(e);
        }

    }

}

From source file:org.sonar.server.source.HtmlTextDecorator.java

List<String> decorateTextWithHtml(String text, DecorationDataHolder decorationDataHolder,
        @Nullable Integer from, @Nullable Integer to) {

    StringBuilder currentHtmlLine = new StringBuilder();
    List<String> decoratedHtmlLines = newArrayList();
    int currentLine = 1;

    BufferedReader stringBuffer = null;
    try {//from   www .  jav  a 2 s. c  o m
        stringBuffer = new BufferedReader(new StringReader(text));

        CharactersReader charsReader = new CharactersReader(stringBuffer);

        while (charsReader.readNextChar()) {
            if (shouldStop(currentLine, to)) {
                break;
            }
            if (shouldStartNewLine(charsReader)) {
                if (canAddLine(currentLine, from)) {
                    decoratedHtmlLines.add(currentHtmlLine.toString());
                }
                currentLine++;
                currentHtmlLine = new StringBuilder();
            }
            addCharToCurrentLine(charsReader, currentHtmlLine, decorationDataHolder);
        }

        closeCurrentSyntaxTags(charsReader, currentHtmlLine);

        if (shouldStartNewLine(charsReader)) {
            addLine(decoratedHtmlLines, currentHtmlLine.toString(), currentLine, from, to);
            currentLine++;
            addLine(decoratedHtmlLines, "", currentLine, from, to);
        } else if (currentHtmlLine.length() > 0) {
            addLine(decoratedHtmlLines, currentHtmlLine.toString(), currentLine, from, to);
        }

    } catch (IOException exception) {
        String errorMsg = "An exception occurred while highlighting the syntax of one of the project's files";
        Loggers.get(HtmlTextDecorator.class).error(errorMsg);
        throw new IllegalStateException(errorMsg, exception);
    } finally {
        Closeables.closeQuietly(stringBuffer);
    }

    return decoratedHtmlLines;
}

From source file:org.trancecode.xml.saxon.Saxon.java

public static XdmNode parse(final String xmlContent, final Processor processor) {
    final StringReader reader = new StringReader(xmlContent);
    try {/* www .  j a v  a2 s . co m*/
        return processor.newDocumentBuilder().build(new StreamSource(reader));
    } catch (final SaxonApiException e) {
        throw new IllegalStateException(e);
    } finally {
        Closeables.closeQuietly(reader);
    }
}

From source file:org.locationtech.geogig.remote.http.HttpUtils.java

/**
 * Consumes the provided input stream and then closes it.
 * /*from w ww .  j  av  a2s. c o m*/
 * @param stream the stream to consume and close
 * @throws IOException
 */
public static void consumeAndCloseStream(InputStream stream) throws IOException {
    if (stream != null) {
        try {
            // read the response body
            while (stream.read() > -1) {
                ; // $codepro.audit.disable extraSemicolon
            }
        } finally {
            // close the errorstream
            Closeables.closeQuietly(stream);
        }
    }
}

From source file:net.sourceforge.vaticanfetcher.model.parse.MSOffice2007Parser.java

@Override
protected ParseResult parse(File file, ParseContext context) throws ParseException {
    OPCPackage pkg = null;/*from  w w w.  j a v a2s  .  c  o  m*/
    try {
        pkg = OPCPackage.open(file.getPath(), PackageAccess.READ);
        String contents = extractText(pkg);

        // Open properties
        PackageProperties props = pkg.getPackageProperties();

        // Get author(s)
        String author = null;
        String defaultAuthor = props.getCreatorProperty().getValue();
        String lastAuthor = props.getLastModifiedByProperty().getValue();
        if (defaultAuthor == null) {
            if (lastAuthor != null)
                author = lastAuthor;
        } else if (lastAuthor == null) {
            author = defaultAuthor;
        } else {
            if (defaultAuthor.equals(lastAuthor))
                author = defaultAuthor;
            else
                author = defaultAuthor + ", " + lastAuthor; //$NON-NLS-1$
        }

        // Get other metadata
        String description = props.getDescriptionProperty().getValue();
        String keywords = props.getKeywordsProperty().getValue();
        String subject = props.getSubjectProperty().getValue();
        String title = props.getTitleProperty().getValue();

        return new ParseResult(contents).setTitle(title).addAuthor(author).addMiscMetadata(description)
                .addMiscMetadata(keywords).addMiscMetadata(subject);
    } catch (Exception e) {
        throw new ParseException(e);
    } finally {
        Closeables.closeQuietly(pkg);
    }
}

From source file:org.apache.mahout.classifier.rbm.network.DeepBoltzmannMachine.java

/**
 * Serialize to the output.//  ww  w.  j av a2  s  .  c  om
 *
 * @param output the output
 * @param conf the conf
 * @throws IOException Signals that an I/O exception has occurred.
 */
public void serialize(Path output, Configuration conf) throws IOException {
    FileSystem fs = output.getFileSystem(conf);
    FSDataOutputStream out = fs.create(output, true);

    try {
        new IntWritable(rbms.size()).write(out);
        for (int i = 0; i < rbms.size(); i++) {
            if (i == 0)
                out.writeChars(rbms.get(i).getVisibleLayer().getClass().getName() + " ");
            out.writeChars(rbms.get(i).getHiddenLayer().getClass().getName() + " ");

            if (i < rbms.size() - 1)
                MatrixWritable.writeMatrix(out, ((SimpleRBM) rbms.get(i)).getWeightMatrix());
            else {
                MatrixWritable.writeMatrix(out, ((LabeledSimpleRBM) rbms.get(i)).getWeightMatrix());
                MatrixWritable.writeMatrix(out, ((LabeledSimpleRBM) rbms.get(i)).getWeightLabelMatrix());
            }
        }
    } finally {
        Closeables.closeQuietly(out);
    }
}

From source file:de.cosmocode.palava.core.inject.csv.CsvConverter.java

@Override
public List<String[]> convert(String value, TypeLiteral<?> toType) {
    final CloseableIterator<String[]> iterator = converter.convert(value, CsvIteratorConverter.LITERAL);

    try {/* w w w . j a v a2  s  .c  o m*/
        final List<String[]> lines = Lists.newArrayList(iterator);
        Preconditions.checkArgument(lines.size() > 0, "%s is empty", value);

        final String[] header = lines.get(0);

        for (int index = 1; index < lines.size(); index++) {
            final String[] line = lines.get(index);

            if (line.length == header.length) {
                continue;
            } else if (line.length < header.length) {
                final String[] copy = new String[header.length];
                Arrays.fill(copy, "");
                System.arraycopy(line, 0, copy, 0, line.length);
                lines.set(index, copy);
            } else {
                // we skip the header, but we count from line 1
                throw new IllegalArgumentException(String.format("Line #%s is too long", index - 1));
            }
        }

        return lines;
    } finally {
        Closeables.closeQuietly(iterator);
    }
}

From source file:zookeeper.example.discovery.DiscoveryExample.java

private static void processCommands(ServiceDiscovery<InstanceDetails> serviceDiscovery,
        Map<String, ServiceProvider<InstanceDetails>> providers, CuratorFramework client) throws Exception {
    // More scaffolding that does a simple command line processor

    printHelp();/*www. j  a va 2  s . co m*/

    List<ExampleServer> servers = Lists.newArrayList();
    try {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        boolean done = false;
        while (!done) {
            System.out.print("> ");

            String command = in.readLine().trim();
            String[] parts = command.split("\\s");
            if (parts.length == 0) {
                continue;
            }
            String operation = parts[0];
            String args[] = Arrays.copyOfRange(parts, 1, parts.length);

            if (operation.equalsIgnoreCase("help") || operation.equalsIgnoreCase("?")) {
                printHelp();
            } else if (operation.equalsIgnoreCase("q") || operation.equalsIgnoreCase("quit")) {
                done = true;
            } else if (operation.equals("add")) {
                addInstance(args, client, command, servers);
            } else if (operation.equals("delete")) {
                deleteInstance(args, command, servers);
            } else if (operation.equals("random")) {
                listRandomInstance(args, serviceDiscovery, providers, command);
            } else if (operation.equals("list")) {
                listInstances(serviceDiscovery);
            }
        }
    } finally {
        for (ExampleServer server : servers) {
            Closeables.closeQuietly(server);
        }
    }
}