Example usage for java.nio.channels Channels newChannel

List of usage examples for java.nio.channels Channels newChannel

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Introduction

In this page you can find the example usage for java.nio.channels Channels newChannel.

Prototype

public static WritableByteChannel newChannel(OutputStream out)

Source Link

Document

Constructs a channel that writes bytes to the given stream.

Usage

From source file:opennlp.tools.doc_classifier.DocClassifierTrainingSetMultilingualExtender.java

private void copyURLToFile(URL url, File file) {
    ReadableByteChannel rbc = null;
    try {/*  w  w w .ja  v  a 2 s  .  c  o m*/
        rbc = Channels.newChannel(url.openStream());
    } catch (IOException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    }
    FileOutputStream fos = null;
    try {
        fos = new FileOutputStream(file.getAbsolutePath());
    } catch (FileNotFoundException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    try {
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

}

From source file:com.jeny.atmosphere.integration.websocket.RawWebSocketProtocol.java

private static ReadableByteChannel newChannel(final String s, final String charset)
        throws UnsupportedEncodingException {
    return Channels.newChannel(new ByteArrayInputStream(s.getBytes(charset)));
}

From source file:com.intel.chimera.CryptoCodecTest.java

private void cryptoCodecTestForReadableByteChannel(int count, String encCodecClass, String decCodecClass,
        byte[] iv) throws IOException {
    CryptoCodec encCodec = null;/*  ww  w.j  a  va  2s  . c  o m*/
    try {
        encCodec = (CryptoCodec) ReflectionUtils.newInstance(ReflectionUtils.getClassByName(encCodecClass),
                props);
    } catch (ClassNotFoundException cnfe) {
        throw new IOException("Illegal crypto codec!");
    }
    LOG.info("Created a Codec object of type: " + encCodecClass);

    // Generate data
    SecureRandom random = new SecureRandom();
    byte[] originalData = new byte[count];
    byte[] decryptedData = new byte[count];
    random.nextBytes(originalData);
    LOG.info("Generated " + count + " records");

    // Encrypt data
    ByteArrayOutputStream encryptedData = new ByteArrayOutputStream();
    CryptoOutputStream out = new CryptoOutputStream(Channels.newChannel(encryptedData), encCodec, bufferSize,
            key, iv);
    out.write(originalData, 0, originalData.length);
    out.flush();
    out.close();
    LOG.info("Finished encrypting data");

    CryptoCodec decCodec = null;
    try {
        decCodec = (CryptoCodec) ReflectionUtils.newInstance(ReflectionUtils.getClassByName(decCodecClass),
                props);
    } catch (ClassNotFoundException cnfe) {
        throw new IOException("Illegal crypto codec!");
    }
    LOG.info("Created a Codec object of type: " + decCodecClass);

    // Decrypt data
    CryptoInputStream in = new CryptoInputStream(
            Channels.newChannel(new ByteArrayInputStream(encryptedData.toByteArray())), decCodec, bufferSize,
            key, iv);

    // Check
    int remainingToRead = count;
    int offset = 0;
    while (remainingToRead > 0) {
        int n = in.read(decryptedData, offset, decryptedData.length - offset);
        if (n >= 0) {
            remainingToRead -= n;
            offset += n;
        }
    }

    Assert.assertArrayEquals("originalData and decryptedData not equal", originalData, decryptedData);

    // Decrypt data byte-at-a-time
    in = new CryptoInputStream(Channels.newChannel(new ByteArrayInputStream(encryptedData.toByteArray())),
            decCodec, bufferSize, key, iv);

    // Check
    DataInputStream originalIn = new DataInputStream(
            new BufferedInputStream(new ByteArrayInputStream(originalData)));
    int expected;
    do {
        expected = originalIn.read();
        Assert.assertEquals("Decrypted stream read by byte does not match", expected, in.read());
    } while (expected != -1);

    LOG.info("SUCCESS! Completed checking " + count + " records");
}

From source file:org.geotools.gce.imagepyramid.ImagePyramidReader.java

/**
 * Constructor for an {@link ImagePyramidReader}.
 * /*from w ww .  j  a v  a  2  s  .co m*/
 * @param source
 *            The source object.
 * @param uHints
 *            {@link Hints} to control the behaviour of this reader.
 * @throws IOException
 * @throws UnsupportedEncodingException
 * 
 */
public ImagePyramidReader(Object source, Hints uHints) throws IOException {
    // //
    //
    // managing hints
    //
    // //
    if (this.hints == null)
        this.hints = new Hints();
    if (uHints != null) {
        this.hints.add(uHints);
    }
    this.coverageFactory = CoverageFactoryFinder.getGridCoverageFactory(this.hints);

    // //
    //
    // Check source
    //
    // //
    if (source == null) {

        throw new DataSourceException("ImagePyramidReader:null source set to read this coverage.");
    }
    this.source = source;
    this.sourceURL = Utils.checkSource(source, uHints);
    if (sourceURL == null) {
        throw new IllegalArgumentException("This plugin accepts only File, URL and String pointing to a file");
    }

    // //
    // //
    //
    // get the crs if able to
    //
    // //      
    final URL prjURL = DataUtilities.changeUrlExt(sourceURL, "prj");
    PrjFileReader crsReader = null;
    try {
        crsReader = new PrjFileReader(Channels.newChannel(prjURL.openStream()));
    } catch (FactoryException e) {
        throw new DataSourceException(e);
    } finally {
        try {
            crsReader.close();
        } catch (Throwable e) {
            if (LOGGER.isLoggable(Level.FINE))
                LOGGER.log(Level.FINE, e.getLocalizedMessage(), e);
        }
    }
    final Object tempCRS = hints.get(Hints.DEFAULT_COORDINATE_REFERENCE_SYSTEM);
    if (tempCRS != null) {
        this.crs = (CoordinateReferenceSystem) tempCRS;
        LOGGER.log(Level.WARNING, "Using forced coordinate reference system " + crs.toWKT());
    } else {
        final CoordinateReferenceSystem tempcrs = crsReader.getCoordinateReferenceSystem();
        if (tempcrs == null) {
            // use the default crs
            crs = AbstractGridFormat.getDefaultCRS();
            LOGGER.log(Level.WARNING,
                    "Unable to find a CRS for this coverage, using a default one: " + crs.toWKT());
        } else
            crs = tempcrs;
    }

    //
    // Load properties file with information about levels and envelope
    //
    parseMainFile(sourceURL);
}

From source file:org.wso2.carbon.identity.common.testng.MockInitialContextFactory.java

/**
 * Copies a resource inside a jar to external file within a directory.
 * Then returns the created file./*  w ww  .j ava  2  s.com*/
 *
 * @param relativeFilePath
 * @param clazz
 * @return
 * @throws TestCreationException
 */
private static File copyTempFile(String relativeFilePath, Class clazz) throws TestCreationException {

    URL url = clazz.getClassLoader().getResource(relativeFilePath);
    if (url == null) {
        throw new TestCreationException("Could not find a resource on the classpath : " + relativeFilePath);
    }
    InputStream inputStream;
    try {
        inputStream = url.openStream();
        ReadableByteChannel inputChannel = Channels.newChannel(inputStream);
        File tempFile = File.createTempFile("tmp_", "_registry.sql");
        FileOutputStream fos = new FileOutputStream(tempFile);
        WritableByteChannel targetChannel = fos.getChannel();
        //Transfer data from input channel to output channel
        ((FileChannel) targetChannel).transferFrom(inputChannel, 0, Short.MAX_VALUE);
        inputStream.close();
        targetChannel.close();
        fos.close();
        return tempFile;
    } catch (IOException e) {
        throw new TestCreationException(
                "Could not copy the file content to temp file from : " + relativeFilePath);
    }
}

From source file:com.thinkberg.vfs.s3.jets3t.Jets3tFileObject.java

protected InputStream doGetInputStream() throws Exception {
    if (!contentCached) {
        object = service.getObject(bucket, getS3Key());
        LOG.debug(String.format("caching content of '%s'", object.getKey()));

        InputStream objectInputStream = object.getDataInputStream();
        if (object.getContentLength() > 0) {
            ReadableByteChannel rbc = Channels.newChannel(objectInputStream);
            FileChannel cacheFc = getCacheFile().getChannel();
            cacheFc.transferFrom(rbc, 0, object.getContentLength());
            cacheFc.close();//from  ww  w  . ja v a2s  .c  o  m
            rbc.close();
        } else {
            objectInputStream.close();
        }
        contentCached = true;
    }

    return Channels.newInputStream(getCacheFile().getChannel());
}

From source file:com.titankingdoms.nodinchan.mobjockeys.MobJockeys.java

/**
 * Checks for update of the library//w  ww  . j  a  v  a  2s.  c  o m
 */
private void updateLib() {
    PluginManager pm = getServer().getPluginManager();

    NCBL libPlugin = (NCBL) pm.getPlugin("NC-BukkitLib");

    File destination = new File(getDataFolder().getParentFile().getParentFile(), "lib");
    destination.mkdirs();

    File lib = new File(destination, "NC-BukkitLib.jar");
    File pluginLib = new File(getDataFolder().getParentFile(), "NC-BukkitLib.jar");

    boolean inPlugins = false;
    boolean download = false;

    try {
        URL url = new URL("http://bukget.org/api/plugin/nc-bukkitlib");

        JSONObject jsonPlugin = (JSONObject) new JSONParser().parse(new InputStreamReader(url.openStream()));
        JSONArray versions = (JSONArray) jsonPlugin.get("versions");

        if (libPlugin == null) {
            getLogger().log(Level.INFO, "Missing NC-Bukkit lib");
            inPlugins = true;
            download = true;

        } else {
            double currentVer = Double.parseDouble(libPlugin.getDescription().getVersion());
            double newVer = currentVer;

            for (int ver = 0; ver < versions.size(); ver++) {
                JSONObject version = (JSONObject) versions.get(ver);

                if (version.get("type").equals("Release")) {
                    newVer = Double
                            .parseDouble(((String) version.get("name")).split(" ")[1].trim().substring(1));
                    break;
                }
            }

            if (newVer > currentVer) {
                getLogger().log(Level.INFO, "NC-Bukkit lib outdated");
                download = true;
            }
        }

        if (download) {
            System.out.println("Downloading NC-Bukkit lib...");

            String dl_link = "";

            for (int ver = 0; ver < versions.size(); ver++) {
                JSONObject version = (JSONObject) versions.get(ver);

                if (version.get("type").equals("Release")) {
                    dl_link = (String) version.get("dl_link");
                    break;
                }
            }

            if (dl_link == null)
                throw new Exception();

            URL link = new URL(dl_link);
            ReadableByteChannel rbc = Channels.newChannel(link.openStream());

            if (inPlugins) {
                FileOutputStream output = new FileOutputStream(pluginLib);
                output.getChannel().transferFrom(rbc, 0, 1 << 24);
                pm.loadPlugin(pluginLib);

            } else {
                FileOutputStream output = new FileOutputStream(lib);
                output.getChannel().transferFrom(rbc, 0, 1 << 24);
            }

            getLogger().log(Level.INFO, "Downloaded NC-Bukkit lib");
        }

    } catch (Exception e) {
        System.out.println("Failed to check for library update");
    }
}

From source file:org.alfresco.contentstore.ContentStoreTest.java

private void assertFileEquals(InputStream expected, InputStream actual, State state) throws IOException {
    ByteBuffer bb1 = ByteBuffer.allocate(1024);
    ByteBuffer bb2 = ByteBuffer.allocate(1024);
    int count1 = 0;
    int count2 = 0;

    try (ReadableByteChannel channel = Channels.newChannel(expected);
            ReadableByteChannel channel1 = Channels.newChannel(actual)) {
        int i1 = channel.read(bb1);
        bb1.flip();/*from   ww  w .  j a v  a 2s . c  om*/

        int i2 = channel1.read(bb2);
        bb2.flip();

        if (i1 == i2) {
            count1 += i1;
            count2 += i2;
            assertTrue("Not equal at " + state, bb1.equals(bb2));
        } else {
            fail("Not equal at " + state);
        }
    }
}

From source file:com.github.neoio.nio.util.NIOUtils.java

public static IOStaging createStagingAndCopyFromInputstream(InputStream is, long length,
        IOStagingFactory factory) throws NetIOException {
    IOStaging staging = factory.newInstance();
    ReadableByteChannel channel = Channels.newChannel(is);

    staging.transferFrom(channel, 0, length);
    staging.reset();/*from   w w w . j a v  a2  s  .co m*/

    return staging;
}

From source file:me.neatmonster.spacertk.actions.FileActions.java

/**
 * Sends a file to a URL/*from w  w w  . jav a 2s . co m*/
 * @param url URL to send to
 * @param file File to send
 * @return If successful
 */
@Action(aliases = { "sendFile", "fileSend" })
public boolean sendFile(final String url, final String file) {
    FileOutputStream fileOutputStream = null;
    ReadableByteChannel readableByteChannel = null;
    try {
        File file_ = new File(file);
        if (file_.exists())
            if (!deleteFile(file_.getPath()))
                return false;
        URL url_ = new URL(url);
        readableByteChannel = Channels.newChannel(url_.openStream());
        fileOutputStream = new FileOutputStream(file_);
        fileOutputStream.getChannel().transferFrom(readableByteChannel, 0, 1 << 24);
        return true;
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        try {
            if (fileOutputStream != null)
                fileOutputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

        try {
            if (readableByteChannel != null)
                readableByteChannel.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
    return false;
}