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:com.streamsets.pipeline.lib.generator.wholefile.WholeFileDataGenerator.java

@Override
public void write(Record record) throws IOException, DataGeneratorException {
    validateRecord(record);//from   w w w. j  a va  2  s.co  m
    FileRef fileRef = record.get(FileRefUtil.FILE_REF_FIELD_PATH).getValueAsFileRef();
    int bufferSize = fileRef.getBufferSize();
    boolean canUseDirectByteBuffer = fileRef.getSupportedStreamClasses().contains(ReadableByteChannel.class);
    if (canUseDirectByteBuffer) {
        //Don't have to close this here, because generate.close will call output stream close
        WritableByteChannel writableByteChannel = Channels.newChannel(outputStream); //NOSONAR
        try (ReadableByteChannel readableByteChannel = getReadableStream(fileRef, ReadableByteChannel.class)) {
            ByteBuffer buffer = ByteBuffer.allocateDirect(bufferSize);
            while ((readableByteChannel.read(buffer)) > 0) {
                //Flip to use the buffer from 0 to position.
                buffer.flip();
                while (buffer.hasRemaining()) {
                    writableByteChannel.write(buffer);
                }
                //Compact the buffer for reuse.
                buffer.clear();
            }
        }
    } else {
        byte[] b = new byte[bufferSize];
        try (InputStream stream = getReadableStream(fileRef, InputStream.class)) {
            IOUtils.copyLarge(stream, outputStream, b);
        }
    }
}

From source file:com.commonsware.android.qrck.SyncService.java

@SuppressWarnings("unchecked")
@Override//  w  w w .j  a  v a 2s.  c  o  m
protected void onHandleIntent(Intent intent) {
    ArrayList<String> visited = new ArrayList<String>();

    if (network.isNetworkAvailable()) {
        inProgress.set(true);
        broadcastStatus();

        try {
            URL jsonUrl = new URL(SYNC_URL);
            ReadableByteChannel rbc = Channels.newChannel(jsonUrl.openStream());
            FileOutputStream fos = openFileOutput(SYNC_LOCAL_FILE, 0);

            fos.getChannel().transferFrom(rbc, 0, 1 << 16);

            JSONObject json = AppUtils.load(this, SYNC_LOCAL_FILE);

            for (Iterator<String> i = json.keys(); i.hasNext();) {
                String title = i.next();
                String url = json.getString(title);
                Entry entry = new Entry(title, url);
                String filename = entry.getFilename();
                File imageFile = new File(getFilesDir(), filename);

                if (!imageFile.exists()) {
                    visited.add(filename);

                    URL imageUrl = new URL(jsonUrl, entry.getUrl());

                    rbc = Channels.newChannel(imageUrl.openStream());
                    fos = new FileOutputStream(imageFile);
                    fos.getChannel().transferFrom(rbc, 0, 1 << 16);
                }
            }

            String[] children = getFilesDir().list();

            if (children != null) {
                for (int i = 0; i < children.length; i++) {
                    String filename = children[i];

                    if (!SYNC_LOCAL_FILE.equals(filename) && !visited.contains(filename)) {
                        new File(getFilesDir(), filename).delete();
                    }
                }
            }
        } catch (Exception ex) {
            // TODO: let the UI know about this via broadcast
            Log.e(TAG, "Exception syncing", ex);
            AppUtils.cleanup(this);
        } finally {
            inProgress.set(false);
            broadcastStatus();
            syncCompleted();
        }
    }
}

From source file:com.github.cat.yum.store.base.RpmScan.java

private ReadableChannelWrapper getReadableChannel(InputStream inputStream) {
    return new ReadableChannelWrapper(Channels.newChannel(inputStream));
}

From source file:eu.betaas.taas.taasvmmanager.configuration.TaaSVMMAnagerConfiguration.java

private static void downloadBaseImages() {
    URL website;//  ww  w. ja  v a 2 s.  co  m
    ReadableByteChannel rbc;
    FileOutputStream fos;
    logger.info("Downloading default VM images.");
    try {
        website = new URL(baseImagesURL);
        rbc = Channels.newChannel(website.openStream());
        fos = new FileOutputStream(baseImagesPath);
        logger.info("Downloading base image from " + baseImagesURL);
        //new DownloadUpdater(baseComputeImageX86Path, baseImagesURL).start();
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
    } catch (MalformedURLException e) {
        logger.error("Error downloading images: bad URL.");
        logger.error(e.getMessage());
    } catch (IOException e) {
        logger.error("Error downloading images: IO exception.");
        logger.error(e.getMessage());
    }
    logger.info("Completed!");
}

From source file:org.spoutcraft.launcher.api.util.Download.java

@SuppressWarnings("unused")
public void run() {
    ReadableByteChannel rbc = null;
    FileOutputStream fos = null;/*  w ww  . j  av a  2s . c o  m*/
    try {
        URLConnection conn = url.openConnection();
        conn.setDoInput(true);
        conn.setDoOutput(false);
        System.setProperty("http.agent",
                "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.162 Safari/535.19");
        conn.setRequestProperty("User-Agent",
                "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.162 Safari/535.19");
        HttpURLConnection.setFollowRedirects(true);
        conn.setUseCaches(false);
        ((HttpURLConnection) conn).setInstanceFollowRedirects(true);
        int response = ((HttpURLConnection) conn).getResponseCode();
        InputStream in = getConnectionInputStream(conn);

        size = conn.getContentLength();
        outFile = new File(outPath);
        outFile.delete();

        rbc = Channels.newChannel(in);
        fos = new FileOutputStream(outFile);

        stateChanged();

        Thread progress = new MonitorThread(Thread.currentThread(), rbc);
        progress.start();

        fos.getChannel().transferFrom(rbc, 0, size > 0 ? size : Integer.MAX_VALUE);
        in.close();
        rbc.close();
        progress.interrupt();
        if (size > 0) {
            if (size == outFile.length()) {
                result = Result.SUCCESS;
            }
        } else {
            result = Result.SUCCESS;
        }
    } catch (PermissionDeniedException e) {
        result = Result.PERMISSION_DENIED;
    } catch (DownloadException e) {
        result = Result.FAILURE;
    } catch (Exception e) {
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(fos);
        IOUtils.closeQuietly(rbc);
    }
}

From source file:org.richfaces.tests.qa.plugin.utils.files.SimpleExtractor.java

@Override
public void extract(File baseDir, File archive) throws IOException {
    if (archive.getAbsolutePath().endsWith("zip")) {
        getLog().info(MessageFormat.format("Extracting zip file <{0}> to directory <{1}>.",
                archive.getAbsolutePath(), baseDir));
        final ZipInputStream is = new ZipInputStream(new BufferedInputStream(new FileInputStream(archive)));
        ZipEntry entry;/*from w w w  .j a v  a2s. c  om*/
        while ((entry = is.getNextEntry()) != null) {
            if (!entry.isDirectory()) {
                final File file = new File(baseDir, entry.getName());
                if (file.exists()) {
                    file.delete();
                }
                Files.createParentDirs(file);
                Files.write(ByteStreams.toByteArray(is), file);
            }
        }
        is.close();
    } else if (archive.getAbsolutePath().endsWith("tar.bz2") || archive.getAbsolutePath().endsWith("tar.gz")) {
        getLog().info(MessageFormat.format("Extracting tar.bz2/tar.gz file <{0}> to directory <{1}>.",
                archive.getAbsolutePath(), baseDir));

        // unzip to tar
        File tarfile = new File(baseDir, "archive.tar");
        tarfile.delete();
        BZip2CompressorInputStream from = new BZip2CompressorInputStream(
                new BufferedInputStream(new FileInputStream(archive)));
        FileOutputStream to = new FileOutputStream(tarfile);
        to.getChannel().transferFrom(Channels.newChannel(from), 0, Long.MAX_VALUE);
        // untar
        final TarArchiveInputStream is = new TarArchiveInputStream(
                new BufferedInputStream(new FileInputStream(tarfile)));
        TarArchiveEntry entry;
        File file;
        while ((entry = is.getNextTarEntry()) != null) {
            if (!entry.isDirectory()) {
                file = new File(baseDir, entry.getName());
                Files.createParentDirs(file);
                Files.write(ByteStreams.toByteArray(is), file);
            }
        }
        is.close();
        tarfile.delete();
    } else {
        throw new UnsupportedOperationException("Not supported file format " + archive.getName());
    }
    getLog().info(MessageFormat.format("Extracting of <{0}> completed.", archive.getAbsolutePath()));
}

From source file:org.spoutcraft.launcher.util.Download.java

@SuppressWarnings("unused")
public void run() {
    ReadableByteChannel rbc = null;
    FileOutputStream fos = null;//from  w w w.  j a  v  a  2s .  c o m
    try {
        URLConnection conn = url.openConnection();
        conn.setDoInput(true);
        conn.setDoOutput(false);
        System.setProperty("http.agent",
                "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.162 Safari/535.19");
        conn.setRequestProperty("User-Agent",
                "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.162 Safari/535.19");
        HttpURLConnection.setFollowRedirects(true);
        conn.setUseCaches(false);
        ((HttpURLConnection) conn).setInstanceFollowRedirects(true);
        int response = ((HttpURLConnection) conn).getResponseCode();
        InputStream in = getConnectionInputStream(conn);

        size = conn.getContentLength();
        outFile = new File(outPath);
        outFile.delete();

        rbc = Channels.newChannel(in);
        fos = new FileOutputStream(outFile);

        stateChanged();

        Thread progress = new MonitorThread(Thread.currentThread(), rbc);
        progress.start();

        fos.getChannel().transferFrom(rbc, 0, size > 0 ? size : Integer.MAX_VALUE);
        in.close();
        rbc.close();
        progress.interrupt();
        if (size > 0) {
            if (size == outFile.length()) {
                result = Result.SUCCESS;
            }
        } else {
            result = Result.SUCCESS;
        }
    } catch (PermissionDeniedException e) {
        exception = e;
        result = Result.PERMISSION_DENIED;
    } catch (DownloadException e) {
        exception = e;
        result = Result.FAILURE;
    } catch (Exception e) {
        exception = e;
        e.printStackTrace();
    } finally {
        IOUtils.closeQuietly(fos);
        IOUtils.closeQuietly(rbc);
    }
}

From source file:org.cryptomator.frontend.webdav.jackrabbitservlet.DavFolder.java

private void addMemberFile(DavFile memberFile, InputStream inputStream) {
    try (ReadableByteChannel src = Channels.newChannel(inputStream);
            WritableFile dst = node.file(memberFile.getDisplayName()).openWritable()) {
        dst.truncate();// www  .j a  va  2s.com
        ByteStreams.copy(src, dst);
    } catch (IOException e) {
        throw new UncheckedIOException(e);
    }
}

From source file:org.sejda.io.BufferedCountingChannelWriter.java

/**
 * Writes everything that is read from the {@link InputStream} to the destination
 * /*from  w  ww  .ja  v  a2  s  .  c o  m*/
 * @param stream
 * @throws IOException
 */
public void write(InputStream stream) throws IOException {
    onNewLine = false;
    try (ReadableByteChannel readable = Channels.newChannel(stream)) {
        flush();
        while (readable.read(buffer) != -1) {
            flush();
        }
    }
}

From source file:org.apache.pulsar.functions.worker.Utils.java

public static void downloadFromHttpUrl(String destPkgUrl, FileOutputStream outputStream) throws IOException {
    URL website = new URL(destPkgUrl);
    ReadableByteChannel rbc = Channels.newChannel(website.openStream());
    outputStream.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
}