Example usage for java.nio.channels Channels newChannel

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:math.tools.Browse.java

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
    if (table[jTable1.getSelectedRow()][3] == "Not Downloaded Yet") {
        System.out.println("downloading");
        FileOutputStream fos;//from   ww w .j  av  a2 s.c  o  m
        try {
            URL website = new URL("" + table[jTable1.getSelectedRow()][4]);
            ReadableByteChannel rbc = Channels.newChannel(website.openStream());
            fos = new FileOutputStream(System.getProperty("user.home") + "//MathHelper//tools//"
                    + table[jTable1.getSelectedRow()][0] + ".jar");
            fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
        } catch (IOException ex) {
            Logger.getLogger(Browse.class.getName()).log(Level.SEVERE, null, ex);
        }
    }
    try {
        Runtime.getRuntime().exec("java -jar " + System.getProperty("user.home") + "//MathHelper//tools//"
                + table[jTable1.getSelectedRow()][0] + ".jar");
    } catch (IOException ex) {
        Logger.getLogger(Browse.class.getName()).log(Level.SEVERE, null, ex);
    }
}

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From source file:org.apache.gobblin.example.githubjsontoparquet.EmbeddedGithubJsonToParquet.java

private void downloadFile(String fileUrl, Path destination) {
    if (destination.toFile().exists()) {
        Log.info(String.format("Skipping download for %s at %s because destination already exists", fileUrl,
                destination.toString()));
        return;/*from  w  w w  . j a  va  2  s .  c  o m*/
    }

    try {
        URL archiveUrl = new URL(fileUrl);
        ReadableByteChannel rbc = Channels.newChannel(archiveUrl.openStream());
        FileOutputStream fos = new FileOutputStream(String.valueOf(destination));
        Log.info(String.format("Downloading %s at %s", fileUrl, destination.toString()));
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
        Log.info(String.format("Download complete for %s at %s", fileUrl, destination.toString()));
    } catch (IOException e) {
        e.printStackTrace();
    }
}

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From source file:org.evilco.bot.powersweeper.platform.DriverManager.java

/**
 * Downloads all natives./* www.j a v a2  s.  c  o m*/
 */
public void downloadNatives() {
    getLogger().entry();

    // skip download if unneeded
    if (this.configuration.getDriver() != Driver.CHROME) {
        // debug
        getLogger().debug("Driver download is not required for " + this.configuration.getDriver().toString()
                + " driver implementation.");

        // exit
        getLogger().exit();
        return;
    }

    // check
    if (!this.configuration.isNativeDownloadEnabled()) {
        // log
        getLogger().info("Automatic download of driver natives is disabled.");

        // log possible error
        if (!this.getDriverNativeFile().exists())
            getLogger().warn("The native could not be found! Proceed with caution.");

        // exit
        getLogger().exit();
        return;
    }

    // check driver file
    if (this.getDriverNativeFile().exists()) {
        // log
        getLogger().info("Driver file seems to exist. Skipping download.");

        // exit
        getLogger().exit();
        return;
    }

    // log
    getLogger().info("Starting download of natives.");

    // get platform
    Platform platform = Platform.guessPlatform();
    boolean is64Bit = System.getProperty("os.arch").endsWith("64");

    // build download URL
    String filename = "potato";

    switch (platform) {
    case LINUX:
    case SOLARIS:
    case UNKNOWN:
        filename = "linux" + (is64Bit ? "64" : 32);
        break;
    case MAC_OS_X:
        filename = "mac32";
        break;
    case WINDOWS:
        filename = "win32";
        break;
    }

    // download and extract
    FileOutputStream outputStream = null;

    // ensure directory exists
    this.getDriverNativeFile().getParentFile().mkdirs();

    try {
        URL downloadURL = new URL(String.format(CHROME_DRIVER_URL, filename));

        // log
        getLogger().info("Downloading driver from " + downloadURL.toString() + " ...");

        // create file reference
        File zipFile = new File(this.getDriverNativeFile().getParentFile(), filename + ".zip");

        // start download
        ReadableByteChannel readableByteChannel = Channels.newChannel(downloadURL.openStream());
        outputStream = new FileOutputStream(zipFile);
        outputStream.getChannel().transferFrom(readableByteChannel, 0, Long.MAX_VALUE);

        // extract zip contents
        this.extract(zipFile);

        // log
        getLogger().info("Finished native download.");

        // delete zip
        if (zipFile.delete())
            getLogger().info("Removed temporary archive.");
        else
            getLogger().warn("Could not remove temporary archive.");
    } catch (IOException ex) {
        getLogger().error("Could not download file from URL \"" + String.format(CHROME_DRIVER_URL, filename)
                + "\": " + ex.getMessage(), ex);
    } finally {
        if (outputStream != null)
            IOUtils.closeQuietly(outputStream);
    }

    // trace
    getLogger().exit();
}

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From source file:net.flamefeed.ftb.modpackupdater.FileOperator.java

/**
 * Download remote file and save output to file system. Called from constructor,
 * so final to prevent being overridden.
 * // www.j  av a 2 s .c  o  m
 * @param path
 * A relative path to the file which will be downloaded. This determines both
 * the target URL and the local destination path. Example:
 * "mods/gregtechmod.zip"
 * 
 * @throws java.io.IOException
 */

public void downloadFile(String path) throws IOException {
    URL urlRemoteTarget = new URL(REMOTE_FILES_LOCATION + "/" + path);
    ReadableByteChannel in = Channels.newChannel(urlRemoteTarget.openStream());
    FileOutputStream out = new FileOutputStream(pathMinecraft + "/" + path);
    out.getChannel().transferFrom(in, 0, Long.MAX_VALUE);
}

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From source file:com.slytechs.capture.StreamFactory.java

public InputCapture<? extends CapturePacket> newInput(final File file,
        final Filter<ProtocolFilterTarget> filter) throws IOException {

    final BufferedInputStream b = new BufferedInputStream(new FileInputStream(file));
    b.mark(1024); // Buffer first 1K of stream so we can rewind

    /*/*from  ww  w  .j  ava  2s  .c  o m*/
     * Check the stream, without decompression first
     */
    if (formatType(Channels.newChannel(b)) != null) {
        b.close();

        /*
         * This is a plain uncompressed file, open up a FileChannel. It will be
         * much faster
         */
        return newInput(new RandomAccessFile(file, "rw").getChannel(), filter);
    }

    /*
     * Try with gunziped stream, second
     */
    b.reset(); // Rewind
    if (formatType(Channels.newChannel(new GZIPInputStream(b))) != null) {
        b.close();

        /*
         * Now reopen the same file, but this time without the buffered
         * inputstream in the middle. Try to make things as efficient as possible.
         * TODO: implement much faster channel based GZIP decompression algorithm
         */
        return newInput(Channels.newChannel(new GZIPInputStream(new FileInputStream(file))), filter);
    }

    b.close();
    return factoryForOther.getFactory().newInput(new RandomAccessFile(file, "r").getChannel(), filter);

}

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From source file:it.doqui.index.ecmengine.business.personalization.multirepository.FileContentReaderDynamic.java

@Override
protected ReadableByteChannel getDirectReadableChannel() throws ContentIOException {
    try {//  ww w.j  a  v a 2  s.  c o m
        // the file must exist
        if (!file.exists()) {
            throw new IOException("File does not exist: " + file);
        }
        // create the channel
        ReadableByteChannel channel = null;
        if (allowRandomAccess) {
            RandomAccessFile randomAccessFile = new RandomAccessFile(file, "r"); // won't create it
            channel = randomAccessFile.getChannel();
        } else {
            InputStream is = new FileInputStream(file);
            channel = Channels.newChannel(is);
        }
        // done
        if (logger.isDebugEnabled()) {
            logger.debug("Opened write channel to file: \n" + "   file: " + file + "\n" + "   random-access: "
                    + allowRandomAccess);
        }
        return channel;
    } catch (Throwable e) {
        throw new ContentIOException("Failed to open file channel: " + this, e);
    }
}

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From source file:org.basinmc.maven.plugins.minecraft.AbstractArtifactMojo.java

/**
 * Fetches any resource from a remote HTTP server and writes it to a supplied channel.
 *///from  w  w  w . ja  va2  s  .c  om
protected void fetch(@Nonnull URI uri, @Nonnull @WillNotClose WritableByteChannel outputChannel)
        throws IOException {
    HttpClient client = HttpClients.createMinimal();

    HttpGet request = new HttpGet(uri);
    HttpResponse response = client.execute(request);

    StatusLine line = response.getStatusLine();

    if (line.getStatusCode() != 200) {
        throw new IOException(
                "Unexpected status code: " + line.getStatusCode() + " - " + line.getReasonPhrase());
    }

    try (InputStream inputStream = response.getEntity().getContent()) {
        try (ReadableByteChannel inputChannel = Channels.newChannel(inputStream)) {
            ByteStreams.copy(inputChannel, outputChannel);
        }
    }
}

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From source file:org.alfresco.repo.content.filestore.FileContentReader.java

@Override
protected ReadableByteChannel getDirectReadableChannel() throws ContentIOException {
    try {/*from  ww w .  j a  v  a 2s.  c  om*/
        // the file must exist
        if (!file.exists()) {
            throw new IOException("File does not exist: " + file);
        }
        // create the channel
        ReadableByteChannel channel = null;
        if (allowRandomAccess) {
            RandomAccessFile randomAccessFile = new RandomAccessFile(file, "r"); // won't create it
            channel = randomAccessFile.getChannel();
        } else {
            InputStream is = new FileInputStream(file);
            channel = Channels.newChannel(is);
        }
        // done
        if (logger.isDebugEnabled()) {
            logger.debug("Opened read channel to file: \n" + "   file: " + file + "\n" + "   random-access: "
                    + allowRandomAccess);
        }
        return channel;
    } catch (Throwable e) {
        throw new ContentIOException("Failed to open file channel: " + this, e);
    }
}

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From source file:it.doqui.index.ecmengine.business.personalization.encryption.content.EncryptingContentWriterDecorator.java

public WritableByteChannel getWritableChannel() throws ContentIOException {
    logger.debug("[EncryptingContentWriterDecorator::getWritableChannel] BEGIN");

    try {/*from   w w  w .ja  v a2 s .com*/
        return Channels.newChannel(getContentOutputStream());
    } finally {
        logger.debug("[EncryptingContentWriterDecorator::getWritableChannel] END");
    }
}

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From source file:org.forgerock.openidm.patch.Main.java

private static void storePatchBundle(File workingDir, File installDir, Map<String, Object> params)
        throws PatchException {

    URL url = getPatchLocation();

    // Download the patch file
    ReadableByteChannel channel = null;
    try {/*from w  w w  .ja v a 2  s . c  om*/
        channel = Channels.newChannel(url.openStream());
    } catch (IOException ex) {
        throw new PatchException("Failed to access the specified file " + url + " " + ex.getMessage(), ex);
    }

    String targetFileName = new File(url.getPath()).getName();
    File patchDir = new File(workingDir, "patch/bin");
    patchDir.mkdirs();
    File targetFile = new File(patchDir, targetFileName);
    FileOutputStream fos = null;
    try {
        fos = new FileOutputStream(targetFile);
    } catch (FileNotFoundException ex) {
        throw new PatchException("Error in getting the specified file to " + targetFile, ex);
    }

    try {
        fos.getChannel().transferFrom(channel, 0, Long.MAX_VALUE);
        System.out.println("Downloaded to " + targetFile);
    } catch (IOException ex) {
        throw new PatchException("Failed to get the specified file " + url + " to: " + targetFile, ex);
    }
}

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