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:gemlite.core.internal.support.system.WorkPathHelper.java

private static boolean lock(File directory) {
    String name = "node.lock";
    File lockfile = new File(directory, name);
    lockfile.deleteOnExit();/*from   w w w.  j av a2s  . c  om*/
    try {
        FileChannel fc = (FileChannel) Channels.newChannel(new FileOutputStream(lockfile));
        lock = fc.tryLock();
        if (lock != null) {
            return true;
        }
    } catch (IOException x) {
        System.err.println(x.toString());
    } catch (OverlappingFileLockException e) {
        System.err.println(e.toString());
    }
    return false;
}

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From source file:org.alfresco.services.ContentGetterImpl.java

@Override
public Content getContentByNodeId(String nodeId, Long nodeVersion) {
    Content content = null;//from w w  w. j  a  va2 s. c  o m

    StringBuilder sb = new StringBuilder(nodeId);
    if (nodeVersion != null) {
        sb.append(";");
        sb.append(nodeVersion);
    }
    ObjectId objectId = new ObjectIdImpl(sb.toString());

    Session session = getCMISSession();
    try {
        Document document = (Document) session.getObject(objectId);
        if (document != null) {
            if (document.isLatestVersion()) {
                String mimeType = (String) document.getProperty(PropertyIds.CONTENT_STREAM_MIME_TYPE)
                        .getFirstValue();
                BigInteger size = (BigInteger) document.getProperty(PropertyIds.CONTENT_STREAM_LENGTH)
                        .getFirstValue();
                ContentStream stream = document.getContentStream();
                if (stream != null) {
                    InputStream is = stream.getStream();
                    ReadableByteChannel channel = Channels.newChannel(is);
                    content = new Content(channel, size.longValue());
                }
            } else {
                logger.warn("Node " + nodeId + "." + nodeVersion + " not latest version");
            }
        } else {
            logger.warn("Node " + nodeId + "." + nodeVersion + " not found");
        }
    } catch (CmisObjectNotFoundException e) {
        logger.warn("Node " + nodeId + "." + nodeVersion + " not found");
    }

    return content;
}

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From source file:net.amigocraft.mpt.command.InstallCommand.java

@SuppressWarnings("unchecked")
public static void downloadPackage(String id) throws MPTException {
    JSONObject packages = (JSONObject) Main.packageStore.get("packages");
    if (packages != null) {
        JSONObject pack = (JSONObject) packages.get(id);
        if (pack != null) {
            if (pack.containsKey("name") && pack.containsKey("version") && pack.containsKey("url")) {
                if (pack.containsKey("sha1") || !Config.ENFORCE_CHECKSUM) {
                    String name = pack.get("name").toString();
                    String version = pack.get("version").toString();
                    String fullName = name + " v" + version;
                    String url = pack.get("url").toString();
                    String sha1 = pack.containsKey("sha1") ? pack.get("sha1").toString() : "";
                    if (pack.containsKey("installed")) { //TODO: compare versions
                        throw new MPTException(ID_COLOR + name + ERROR_COLOR + " is already installed");
                    }//from  ww  w . ja  v  a 2 s.  co  m
                    try {
                        URLConnection conn = new URL(url).openConnection();
                        conn.connect();
                        ReadableByteChannel rbc = Channels.newChannel(conn.getInputStream());
                        File file = new File(Main.plugin.getDataFolder(),
                                "cache" + File.separator + id + ".zip");
                        file.setReadable(true, false);
                        file.setWritable(true, false);
                        file.getParentFile().mkdirs();
                        file.createNewFile();
                        FileOutputStream os = new FileOutputStream(file);
                        os.getChannel().transferFrom(rbc, 0, MiscUtil.getFileSize(new URL(url)));
                        os.close();
                        if (!sha1.isEmpty() && !sha1(file.getAbsolutePath()).equals(sha1)) {
                            file.delete();
                            throw new MPTException(ERROR_COLOR + "Failed to install package " + ID_COLOR
                                    + fullName + ERROR_COLOR + ": checksum mismatch!");
                        }
                    } catch (IOException ex) {
                        throw new MPTException(
                                ERROR_COLOR + "Failed to download package " + ID_COLOR + fullName);
                    }
                } else
                    throw new MPTException(ERROR_COLOR + "Package " + ID_COLOR + id + ERROR_COLOR
                            + " is missing SHA-1 checksum! Aborting...");
            } else
                throw new MPTException(ERROR_COLOR + "Package " + ID_COLOR + id + ERROR_COLOR
                        + " is missing required elements!");
        } else
            throw new MPTException(ERROR_COLOR + "Cannot find package with id " + ID_COLOR + id);
    } else {
        throw new MPTException(ERROR_COLOR + "Package store is malformed!");
    }
}

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From source file:org.eclipse.jgit.lfs.server.fs.ObjectUploadListener.java

/**
 * @param repository//from   ww w . j  a v a 2s.  c  o  m
 *            the repository storing large objects
 * @param context
 * @param request
 * @param response
 * @param id
 * @throws FileNotFoundException
 * @throws IOException
 */
public ObjectUploadListener(FileLfsRepository repository, AsyncContext context, HttpServletRequest request,
        HttpServletResponse response, AnyLongObjectId id) throws FileNotFoundException, IOException {
    this.context = context;
    this.response = response;
    this.in = request.getInputStream();
    this.inChannel = Channels.newChannel(in);
    this.out = repository.getOutputStream(id);
    this.channel = Channels.newChannel(out);
    response.setContentType(Constants.CONTENT_TYPE_GIT_LFS_JSON);
}

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From source file:org.apache.xmlgraphics.util.io.Base64Test.java

/**
 * Returns true if the contents of <tt>is1</tt> match the contents of
 * <tt>is2</tt>/*from w ww  . j  av a2 s  .c o m*/
 *
 * @throws IOException
 */
public static boolean compareStreams(final InputStream i1, final InputStream i2, final boolean skipws)
        throws IOException {
    try (final ReadableByteChannel ch1 = Channels.newChannel(i1)) {
        try (final ReadableByteChannel ch2 = Channels.newChannel(i2)) {

            final ByteBuffer buf1 = ByteBuffer.allocateDirect(1024);
            final ByteBuffer buf2 = ByteBuffer.allocateDirect(1024);

            while (true) {

                final int n1 = ch1.read(buf1);
                final int n2 = ch2.read(buf2);

                if (n1 == -1 || n2 == -1) {
                    return n1 == n2;
                }

                buf1.flip();
                buf2.flip();

                for (int i = 0; i < Math.min(n1, n2); ++i) {
                    if (buf1.get() != buf2.get()) {
                        return false;
                    }
                }

                buf1.compact();
                buf2.compact();
            }
        }
    }
}

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From source file:org.apache.beam.sdk.io.LocalFileSystem.java

@Override
protected WritableByteChannel create(LocalResourceId resourceId, CreateOptions createOptions)
        throws IOException {
    LOG.debug("creating file {}", resourceId);
    File absoluteFile = resourceId.getPath().toFile().getAbsoluteFile();
    if (absoluteFile.getParentFile() != null && !absoluteFile.getParentFile().exists()
            && !absoluteFile.getParentFile().mkdirs() && !absoluteFile.getParentFile().exists()) {
        throw new IOException("Unable to create parent directories for '" + resourceId + "'");
    }//from w  ww  . j a v  a 2  s .c om
    return Channels.newChannel(new BufferedOutputStream(new FileOutputStream(absoluteFile)));
}

---

From source file:io.github.jeremgamer.preview.actions.Download.java

private void download() {

    GeneralSave gs = new GeneralSave();
    try {/*from  ww  w.  ja  v  a 2s . c  o m*/
        gs.load(new File("projects/" + Editor.getProjectName() + "/general.rbd"));
    } catch (IOException e1) {
        e1.printStackTrace();
    }
    name = gs.getString("name");
    new Thread(new Runnable() {

        @Override
        public void run() {
            if (url == null) {

            } else {
                File archive = new File(System.getProperty("user.home") + "/AppData/Roaming/.rocketbuilder/"
                        + name + "/data.zip");
                File outputFolder = new File(
                        System.getProperty("user.home") + "/AppData/Roaming/.rocketbuilder/" + name);

                new File(System.getProperty("user.home") + "/AppData/Roaming/.rocketbuilder/" + name).mkdirs();
                URL webFile;
                try {
                    webFile = new URL(url);
                    ReadableByteChannel rbc = Channels.newChannel(webFile.openStream());
                    fos = new FileOutputStream(System.getProperty("user.home")
                            + "/AppData/Roaming/.rocketbuilder/" + name + "/data.zip");
                    HttpURLConnection httpConn = (HttpURLConnection) webFile.openConnection();
                    totalBytes = httpConn.getContentLength();
                    new Thread(new Runnable() {
                        @Override
                        public void run() {
                            try {
                                while (bytesCopied < totalBytes) {
                                    for (CustomProgressBar bar : barList) {
                                        bytesCopied = fos.getChannel().size();
                                        progressValue = (int) (100 * bytesCopied / totalBytes);
                                        bar.setValue(progressValue);
                                        if (bar.isStringPainted()) {
                                            bar.setString(progressValue + "%     " + bytesCopied / 1000 + "/"
                                                    + totalBytes / 1000 + "Kb     tape " + step + "/2");
                                        }
                                    }
                                }
                            } catch (IOException e) {
                                e.printStackTrace();
                            }
                        }

                    }).start();
                    fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
                    fos.close();
                    step = 2;
                    for (CustomProgressBar bar : barList) {
                        if (bar.isStringPainted()) {
                            bar.setString("tape " + step + "/2 : Extraction");
                        }
                    }

                    for (int timeout = 100; timeout > 0; timeout--) {
                        RandomAccessFile ran = null;

                        try {
                            ran = new RandomAccessFile(archive, "rw");
                            break;
                        } catch (Exception ex) {
                        } finally {
                            if (ran != null)
                                try {
                                    ran.close();
                                } catch (IOException ex) {
                                }

                            ran = null;
                        }

                        try {
                            Thread.sleep(100);
                        } catch (InterruptedException ex) {
                        }
                    }

                    ZipFile zipFile = new ZipFile(archive, Charset.forName("Cp437"));
                    Enumeration<? extends ZipEntry> entries = zipFile.entries();
                    while (entries.hasMoreElements()) {
                        ZipEntry entry = entries.nextElement();
                        File entryDestination = new File(outputFolder, entry.getName());
                        entryDestination.getParentFile().mkdirs();
                        if (entry.isDirectory())
                            entryDestination.mkdirs();
                        else {
                            InputStream in = zipFile.getInputStream(entry);
                            OutputStream out = new FileOutputStream(entryDestination);
                            IOUtils.copy(in, out);
                            IOUtils.closeQuietly(in);
                            IOUtils.closeQuietly(out);
                            in.close();
                            out.close();
                        }
                    }

                    for (CustomProgressBar bar : barList) {
                        bar.setString("");
                    }

                    zipFile.close();
                    archive.delete();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

    }).start();
}

---

From source file:com.spectralogic.ds3client.commands.GetObjectRequest.java

public GetObjectRequest(final String bucketName, final String objectName, final UUID job, final long offset,
        @Nonnull final OutputStream stream) {
    Preconditions.checkNotNull(stream, "Stream may not be null.");
    this.bucketName = bucketName;
    this.objectName = objectName;
    this.job = job.toString();
    this.offset = offset;
    this.channel = Channels.newChannel(stream);

    this.updateQueryParam("job", job);

    this.updateQueryParam("offset", offset);

}

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From source file:io.druid.segment.data.CompressedVSizeIntsIndexedWriterTest.java

private void checkSerializedSizeAndData(int chunkSize) throws Exception {
    CompressedVSizeIntsIndexedWriter writer = new CompressedVSizeIntsIndexedWriter(ioPeon, "test",
            vals.length > 0 ? Ints.max(vals) : 0, chunkSize, byteOrder, compressionStrategy);
    CompressedVSizeIntsIndexedSupplier supplierFromList = CompressedVSizeIntsIndexedSupplier.fromList(
            Ints.asList(vals), vals.length > 0 ? Ints.max(vals) : 0, chunkSize, byteOrder, compressionStrategy);
    writer.open();//w w w  .j  a  v a  2  s.  c  om
    for (int val : vals) {
        writer.add(val);
    }
    writer.close();
    long writtenLength = writer.getSerializedSize();
    final WritableByteChannel outputChannel = Channels.newChannel(ioPeon.makeOutputStream("output"));
    writer.writeToChannel(outputChannel);
    outputChannel.close();

    assertEquals(writtenLength, supplierFromList.getSerializedSize());

    // read from ByteBuffer and check values
    CompressedVSizeIntsIndexedSupplier supplierFromByteBuffer = CompressedVSizeIntsIndexedSupplier
            .fromByteBuffer(ByteBuffer.wrap(IOUtils.toByteArray(ioPeon.makeInputStream("output"))), byteOrder);
    IndexedInts indexedInts = supplierFromByteBuffer.get();
    for (int i = 0; i < vals.length; ++i) {
        assertEquals(vals[i], indexedInts.get(i));
    }
    CloseQuietly.close(indexedInts);
}

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From source file:com.quanticate.opensource.compressingcontentstore.DecompressingContentReader.java

@Override
protected ReadableByteChannel getDirectReadableChannel() throws ContentIOException {
    // Get a Channel onto the real data
    ReadableByteChannel rawChannel = getRawChannel();

    // Wrap this as an InputStream - Commons Compress is Stream not Channel based
    // Note that Commons Compress needs to mark/reset a bit to identify
    InputStream rawInp = new BufferedInputStream(Channels.newInputStream(rawChannel), 32);

    // Try to process it as a compressed stream
    try {// ww w.ja  v  a2 s  .co  m
        CompressorInputStream decompressed = new CompressorStreamFactory().createCompressorInputStream(rawInp);
        logger.debug("Detected compressed data as " + decompressed.getClass().getName());
        return Channels.newChannel(decompressed);
    } catch (CompressorException e) {
        logger.info("Unable to decompress " + realContentReader, e);
    }

    // Tidy up that channel, and re-fetch the real one
    try {
        rawInp.close();
        rawChannel.close();
    } catch (IOException e) {
        logger.warn("Error tidying up", e);
    }

    logger.debug("Using raw form for " + getContentUrl());
    return getRawChannel();
}

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