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:com.respam.comniq.models.OMDBParser.java

public void requestOMDB(String movie, String year) {
    String imageURL;/*from w w w  . ja va 2  s  .com*/

    // Location for downloading and storing thumbnails
    String path = System.getProperty("user.home") + File.separator + "comniq" + File.separator + "output"
            + File.separator + "thumbnails";
    File userOutDir = new File(path);

    // Create Thumbnails directory if not present
    if (userOutDir.mkdirs()) {
        System.out.println(userOutDir + " was created");
    }

    // Connect to OMDB API and fetch details
    try {
        // Proxy details
        HttpHost proxy = new HttpHost("web-proxy.in.hpecorp.net", 8080, "http");

        //            HttpClient client = HttpClientBuilder.create().build();

        // Start of proxy client
        DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
        CloseableHttpClient client = HttpClients.custom().setRoutePlanner(routePlanner).build();
        // End of proxy client

        String uri = "http://www.omdbapi.com/?t=" + URLEncoder.encode(movie) + "&y=" + year;
        uri = uri.replace(" ", "%20");
        HttpGet request = new HttpGet(uri);
        HttpResponse response = client.execute(request);
        String json = EntityUtils.toString(response.getEntity());
        JSONParser parser = new JSONParser();
        JSONObject jsonObject = (JSONObject) parser.parse(json);

        // Excluding Non Movies
        if (null != jsonObject.get("Title")) {
            movieInfo.add(jsonObject);

            // Download the thumbnails if Poster URL present
            if (null != jsonObject.get("Poster")) {
                imageURL = ((String) jsonObject.get("Poster"));
                System.out.println(imageURL);
                URL thumbnail = new URL(imageURL);
                ReadableByteChannel rbc = Channels.newChannel(thumbnail.openStream());
                FileOutputStream fos = new FileOutputStream(
                        path + File.separator + jsonObject.get("Title") + ".jpg");
                fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
            }
        }

    } catch (ParseException | IOException | UnsupportedOperationException e) {
        e.printStackTrace();
    }
}

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

private void checkSerializedSizeAndData(int chunkFactor) throws Exception {
    CompressedIntsIndexedWriter writer = new CompressedIntsIndexedWriter(ioPeon, "test", chunkFactor, byteOrder,
            compressionStrategy);/*from  www  .ja va2s  . c om*/
    CompressedIntsIndexedSupplier supplierFromList = CompressedIntsIndexedSupplier.fromList(Ints.asList(vals),
            chunkFactor, byteOrder, compressionStrategy);
    writer.open();
    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
    CompressedIntsIndexedSupplier supplierFromByteBuffer = CompressedIntsIndexedSupplier
            .fromByteBuffer(ByteBuffer.wrap(IOUtils.toByteArray(ioPeon.makeInputStream("output"))), byteOrder);
    IndexedInts indexedInts = supplierFromByteBuffer.get();
    assertEquals(vals.length, indexedInts.size());
    for (int i = 0; i < vals.length; ++i) {
        assertEquals(vals[i], indexedInts.get(i));
    }
    CloseQuietly.close(indexedInts);
}

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

private void assertEqual(InputStream expected, InputStream actual) throws IOException {
    ByteBuffer bb1 = ByteBuffer.allocate(1024);
    ByteBuffer bb2 = ByteBuffer.allocate(1024);

    try (ReadableByteChannel expectedChannel = Channels.newChannel(expected);
            ReadableByteChannel actualChannel = Channels.newChannel(actual)) {
        State state = new State();
        for (;;) {
            int numRead1 = expectedChannel.read(bb1);
            bb1.flip();//from  w  ww. j  a  v  a2 s.c  o m

            int numRead2 = actualChannel.read(bb2);
            bb2.flip();

            assertEqual(bb1, bb2, state);

            if (numRead1 < 1) {
                break;
            }

            bb1.clear();
            bb2.clear();
        }
    }
}

---

From source file:org.carlspring.strongbox.storage.metadata.nuget.TempNupkgFile.java

/**
 * Creates a temporary file based on the stream.
 *
 * @param inputStream/*ww  w.  ja va2s .  com*/
 *            data stream
 * @param targetFile
 *            file to copy the package to
 * @return data file
 * @throws IOException
 *             read / write error
 * @throws NoSuchAlgorithmException
 *             the system does not have an algorithm for calculating the
 *             value of HASH
 */
private static String copyDataAndCalculateHash(InputStream inputStream, File targetFile)
        throws IOException, NoSuchAlgorithmException {
    MessageDigest messageDigest = MessageDigest.getInstance(MessageDigestAlgorithms.SHA_512);
    DigestInputStream digestInputStream = new DigestInputStream(inputStream, messageDigest);

    try (FileOutputStream fileOutputStream = new FileOutputStream(targetFile);
            ReadableByteChannel src = Channels.newChannel(digestInputStream);
            FileChannel dest = fileOutputStream.getChannel();) {
        fastChannelCopy(src, dest);

        byte[] digest = digestInputStream.getMessageDigest().digest();

        return DatatypeConverter.printBase64Binary(digest);
    }
}

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From source file:com.recomdata.transmart.data.export.util.ExportImageProcessor.java

public void run() {
    URL imageURL = null;/*from w  w w . j  a  v  a2s .co  m*/
    File imageFile = new File(imagesTempDir + File.separator + filename);
    ReadableByteChannel rbc = null;
    FileOutputStream fos = null;
    try {
        if (StringUtils.isEmpty(imageURI))
            return;

        imageURL = new URL(imageURI);
        rbc = Channels.newChannel(imageURL.openStream());
        fos = new FileOutputStream(imageFile);
        fos.getChannel().transferFrom(rbc, 0, 1 << 24);
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } finally {
        if (null != fos)
            try {
                fos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
    }
}

---

From source file:org.geoserver.gwc.wms.CachingWebMapService.java

/**
 * Wraps {@link WebMapService#getMap(GetMapRequest)}, called by the {@link Dispatcher}
 * //from  ww  w  . j  a  v a  2 s .c o  m
 * @see WebMapService#getMap(GetMapRequest)
 * @see org.aopalliance.intercept.MethodInterceptor#invoke(org.aopalliance.intercept.MethodInvocation)
 */
public WebMap invoke(MethodInvocation invocation) throws Throwable {
    GWCConfig config = gwc.getConfig();
    if (!config.isDirectWMSIntegrationEnabled()) {
        return (WebMap) invocation.proceed();
    }

    final GetMapRequest request = getRequest(invocation);
    boolean tiled = request.isTiled();
    if (!tiled) {
        return (WebMap) invocation.proceed();
    }

    final StringBuilder requestMistmatchTarget = new StringBuilder();
    ConveyorTile cachedTile = gwc.dispatch(request, requestMistmatchTarget);

    if (cachedTile == null) {
        WebMap dynamicResult = (WebMap) invocation.proceed();
        dynamicResult.setResponseHeader("geowebcache-cache-result", MISS.toString());
        dynamicResult.setResponseHeader("geowebcache-miss-reason", requestMistmatchTarget.toString());
        return dynamicResult;
    }
    checkState(cachedTile.getTileLayer() != null);
    final TileLayer layer = cachedTile.getTileLayer();

    if (LOGGER.isLoggable(Level.FINEST)) {
        LOGGER.finest("GetMap request intercepted, serving cached content: " + request);
    }

    final byte[] tileBytes;
    {
        final Resource mapContents = cachedTile.getBlob();
        if (mapContents instanceof ByteArrayResource) {
            tileBytes = ((ByteArrayResource) mapContents).getContents();
        } else {
            ByteArrayOutputStream out = new ByteArrayOutputStream();
            mapContents.transferTo(Channels.newChannel(out));
            tileBytes = out.toByteArray();
        }
    }

    // Handle Etags
    final String ifNoneMatch = request.getHttpRequestHeader("If-None-Match");
    final byte[] hash = MessageDigest.getInstance("MD5").digest(tileBytes);
    final String etag = toHexString(hash);
    if (etag.equals(ifNoneMatch)) {
        // Client already has the current version
        LOGGER.finer("ETag matches, returning 304");
        throw new HttpErrorCodeException(HttpServletResponse.SC_NOT_MODIFIED);
    }

    LOGGER.finer("No matching ETag, returning cached tile");
    final String mimeType = cachedTile.getMimeType().getMimeType();

    RawMap map = new RawMap(null, tileBytes, mimeType);

    map.setContentDispositionHeader(null, "." + cachedTile.getMimeType().getFileExtension(), false);

    Integer cacheAgeMax = getCacheAge(layer);
    LOGGER.log(Level.FINE, "Using cacheAgeMax {0}", cacheAgeMax);
    if (cacheAgeMax != null) {
        map.setResponseHeader("Cache-Control", "max-age=" + cacheAgeMax);
    } else {
        map.setResponseHeader("Cache-Control", "no-cache");
    }

    setConditionalGetHeaders(map, cachedTile, request, etag);
    setCacheMetadataHeaders(map, cachedTile, layer);

    return map;

}

---

From source file:info.fetter.rrdclient.GraphCommand.java

@Override
public void execute(OutputStream out) {
    String command = "graph";
    for (String arg : args) {
        command += " " + arg;
    }//from  w ww.j a  v  a  2  s.c o  m
    try {
        ByteBuffer response = sendCommandToServer(command);
        WritableByteChannel channel = Channels.newChannel(out);
        channel.write(response);
        isOutputParsed = false;
    } catch (IOException e) {
        throw new RuntimeException(e);
    }

}

---

From source file:org.codelabor.system.file.util.UploadUtils.java

/**
 * ?? .</br> ?  ?? FILE_SYSTEM? , ??  DATABASE?  byte[]
 *  DTO? ./*from www . j av a 2  s.  c  o m*/
 * 
 * @param repositoryType
 *            ?  ?
 * @param inputStream
 *             
 * @param fileDTO
 *            ? DTO
 * @throws Exception
 *             
 */
static public void processFile(RepositoryType repositoryType, InputStream inputStream, FileDTO fileDTO)
        throws Exception {
    // prepare io
    OutputStream outputStream = null;
    ReadableByteChannel inputChannel = null;
    WritableByteChannel outputChannel = null;

    int fileSize = 0;

    switch (repositoryType) {
    case FILE_SYSTEM:
        // prepare repository
        File repository = new File(fileDTO.getRepositoryPath());
        String repositoryPath = fileDTO.getRepositoryPath();
        StringBuilder sb = new StringBuilder();
        if (logger.isDebugEnabled()) {
            sb.append("repositoryPath: ").append(repositoryPath);
            sb.append(", repositoryType: ").append(repositoryType);
            sb.append(", repository.exists(): ").append(repository.exists());
            sb.append(", repository.isDirectory(): ").append(repository.isDirectory());
            logger.debug(sb.toString());
        }

        // prepare directory
        File file = new File(repositoryPath);
        if (!file.exists()) {
            try {
                FileUtils.forceMkdir(file);
            } catch (IOException e) {
                StringBuilder sb = new StringBuilder();
                sb.append("Cannot make directory: ");
                sb.append(file.toString());
                logger.error(sb.toString());
                throw new ServletException(sb.toString());
            }
        }

        // prepare stream
        sb.setLength(0);
        sb.append(fileDTO.getRepositoryPath());
        if (!fileDTO.getRepositoryPath().endsWith(File.separator)) {
            sb.append(File.separator);
        }
        sb.append(fileDTO.getUniqueFilename());
        String filename = sb.toString();
        outputStream = new FileOutputStream(filename);
        logger.debug("filename: {}", filename);

        // copy channel
        inputChannel = Channels.newChannel(inputStream);
        outputChannel = Channels.newChannel(outputStream);
        fileSize = ChannelUtils.copy(inputChannel, outputChannel);

        // set vo
        if (StringUtils.isEmpty(fileDTO.getContentType())) {
            fileDTO.setContentType(TikaMimeDetectUtils.getMimeType(filename));
        }
        break;
    case DATABASE:
        // prepare steam
        outputStream = new ByteArrayOutputStream();

        // copy channel
        inputChannel = Channels.newChannel(inputStream);
        outputChannel = Channels.newChannel(outputStream);
        fileSize = ChannelUtils.copy(inputChannel, outputChannel);

        // set vo
        byte[] bytes = ((ByteArrayOutputStream) outputStream).toByteArray();
        fileDTO.setBytes(bytes);
        fileDTO.setRepositoryPath(null);
        if (StringUtils.isEmpty(fileDTO.getContentType())) {
            fileDTO.setContentType(TikaMimeDetectUtils.getMimeType(bytes));
        }
        break;
    }
    fileDTO.setFileSize(fileSize);

    // close io
    inputChannel.close();
    outputChannel.close();
    inputStream.close();
    outputStream.close();
}

---

From source file:com.radiohitwave.ftpsync.API.java

public String DownloadApplicationFile() throws IOException {
    try {//from  w w w  . j a  v  a  2 s  . c  o  m
        URL website = new URL(this.apiDomain + this.updateRemoteFile + "?" + System.nanoTime());
        ReadableByteChannel rbc = Channels.newChannel(website.openStream());
        File downloadFolder = new File(this.tempFilePath);
        downloadFolder.mkdirs();
        FileOutputStream fos = new FileOutputStream(this.tempFilePath + "/" + this.updateLocalFile);
        fos.getChannel().transferFrom(rbc, 0, Long.MAX_VALUE);
        return this.tempFilePath;
    } catch (FileNotFoundException ex) {
        Log.error(ex.toString());
        Log.remoteError(ex);
    }
    return null;
}

---

From source file:org.wikidata.wdtk.util.DirectoryManagerImpl.java

@Override
public long createFileAtomic(String fileName, InputStream inputStream) throws IOException {
    long fileSize;
    Path filePath = this.directory.resolve(fileName);
    Path fileTempPath = this.directory.resolve(fileName + ".part");

    try (ReadableByteChannel readableByteChannel = Channels.newChannel(inputStream);
            FileChannel fc = FileChannel.open(fileTempPath, StandardOpenOption.WRITE,
                    StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.CREATE)) {
        fileSize = fc.transferFrom(readableByteChannel, 0, Long.MAX_VALUE);
    }//www  .j a v a2 s  . c  om

    Files.move(fileTempPath, filePath);

    return fileSize;
}

---

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