Пример #1
0
  public ByteBuffer toBytes() {
    byte[] keyBytes = Bytes.toBytes(key);
    byte[] keyLengthBytes = Bytes.toBytes(keyBytes.length);
    byte[] valueLengthBytes = Bytes.toBytes(value.length);
    byte[] oldVersionBytes = Bytes.toBytes(oldVersion);

    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    try {
      outputStream.write(keyLengthBytes);
      outputStream.write(keyBytes);
      outputStream.write(valueLengthBytes);
      outputStream.write(value);
      outputStream.write(oldVersionBytes);
    } catch (IOException e) {
      log.error("Unexpected error while serializing an option", e);
    }

    byte[] concatenated = outputStream.toByteArray();
    ByteBuffer serialized = ByteBuffer.wrap(concatenated);
    try {
      outputStream.close();
    } catch (IOException ignored) {
    }
    return serialized;
  }
Пример #2
0
 private void createData() throws IOException {
   // apache commons' implementation required
   ByteArrayOutputStream bstream = new ByteArrayOutputStream();
   for (byte b = Byte.MIN_VALUE; b < Byte.MAX_VALUE; b++) bstream.write(b);
   bstream.write(Byte.MAX_VALUE);
   data = bstream.toByteArray();
   bstream.close(); // doesn't really do anything
 }
Пример #3
0
  @Test
  public void verifyBytesWritten() throws IOException, WriteFileInContainerException {
    cont.storeFile(
        file, new BufferedInputStream(new ByteArrayInputStream(data)), FileInContainer.NO_TAIL_ID);

    // apache commons' implementation required
    ByteArrayOutputStream bstream = new ByteArrayOutputStream();
    bstream.write(containerHeader);
    bstream.write(fileHeader);
    bstream.write(data);
    bstream.write(checksum);
    byte[] expected = bstream.toByteArray();
    bstream.close();
    byte[] actual = FileUtils.readFileToByteArray(new java.io.File(cont.getFileName()));
    assertArrayEquals(expected, actual);
  }
Пример #4
0
 public static MD5InputStreamResult generateMD5Result(InputStream toEncode) {
   MD5Digest eTag = new MD5Digest();
   byte[] resBuf = new byte[eTag.getDigestSize()];
   byte[] buffer = new byte[1024];
   ByteArrayOutputStream out = new ByteArrayOutputStream();
   long length = 0;
   int numRead = -1;
   try {
     do {
       numRead = toEncode.read(buffer);
       if (numRead > 0) {
         length += numRead;
         eTag.update(buffer, 0, numRead);
         out.write(buffer, 0, numRead);
       }
     } while (numRead != -1);
   } catch (IOException e) {
     throw new RuntimeException(e);
   } finally {
     IOUtils.closeQuietly(out);
     IOUtils.closeQuietly(toEncode);
   }
   eTag.doFinal(resBuf, 0);
   return new MD5InputStreamResult(out.toByteArray(), resBuf, length);
 }
Пример #5
0
  private ByteArrayOutputStream encodeToBytes() throws IOException {
    ByteArrayOutputStream buf = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(new GZIPOutputStream(buf));
    oos.writeObject(this);
    oos.close();

    ByteArrayOutputStream buf2 = new ByteArrayOutputStream();

    DataOutputStream dos = new DataOutputStream(new Base64OutputStream(buf2, true, -1, null));
    buf2.write(PREAMBLE);
    dos.writeInt(buf.size());
    buf.writeTo(dos);
    dos.close();
    buf2.write(POSTAMBLE);
    return buf2;
  }
  @Override
  public void decompress() {
    if (compressed) {
      Inflater decompressor = new Inflater();
      decompressor.setInput(data);

      ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length);

      byte[] buf = new byte[1024];
      while (!decompressor.finished()) {
        try {
          int count = decompressor.inflate(buf);
          bos.write(buf, 0, count);
        } catch (DataFormatException e) {

        }
      }
      try {
        bos.close();
      } catch (IOException e) {

      }

      data = bos.toByteArray();
    }
  }
Пример #7
0
  private void readFiles(InputStream csar_file) throws IOException, NotFoundException {

    ZipInputStream zipStream = new ZipInputStream(csar_file);
    ZipEntry entry;
    this.scripts.clear();
    this.folderNames.clear();
    this.template = new ByteArrayOutputStream();
    this.metadata = new ByteArrayOutputStream();

    while ((entry = zipStream.getNextEntry()) != null) {

      if (!entry.isDirectory()) {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();

        int count;
        byte[] buffer = new byte[1024];
        while ((count = zipStream.read(buffer)) != -1) {
          baos.write(buffer, 0, count);
        }

        String fileName = entry.getName();

        if (fileName.toLowerCase().endsWith(".meta")) {
          this.metadata = baos;
        } else if (fileName.toLowerCase().endsWith(".yaml")) {
          if (fileName.toLowerCase().endsWith("metadata.yaml")) {
            this.vnfMetadata = baos;
          } else {
            this.template = baos;
          }
        } else {

          Script script = new Script();
          String[] splittedName = fileName.split("/");
          if (splittedName.length > 2) {
            String scriptName = splittedName[1] + "!_!" + splittedName[splittedName.length - 1];
            folderNames.add(splittedName[1]);
            script.setName(scriptName);

          } else script.setName(splittedName[splittedName.length - 1]);

          script.setPayload(baos.toByteArray());
          this.scripts.add(script);
        }
      }
    }
    if (this.metadata == null) {
      throw new NotFoundException("CSARParser: Not found TOSCA.meta");
    }
    if (this.vnfMetadata == null) {
      throw new NotFoundException("CSARParser: Not found Metadata.yaml");
    }
    if (this.template == null) {
      throw new NotFoundException("CSARParser: Not found VNFD / NSD Template");
    }

    // zipStream.close();
  }
 @Override
 public void write(byte[] b, int off, int len) throws IOException {
   size += len;
   if (tempMemoryBuffer != null) {
     tempMemoryBuffer.write(b, off, len);
   } else {
     bufOut.write(b, off, len);
   }
   checkSize();
 }
 @Override
 public void write(int b) throws IOException {
   size++;
   if (tempMemoryBuffer != null) {
     tempMemoryBuffer.write(b);
   } else {
     bufOut.write(b);
   }
   checkSize();
 }
Пример #10
0
  private static String readInputAsString(InputStream in) throws Exception {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();

    byte[] buf = new byte[512];
    int nRead = 0;
    while ((nRead = in.read(buf)) >= 0) {
      baos.write(buf, 0, nRead);
    }

    return new String(baos.toByteArray(), "UTF-8");
  }
Пример #11
0
 protected String read(InputStream resource) throws IOException {
   int i;
   byte[] buffer = new byte[65565];
   ByteArrayOutputStream out = new ByteArrayOutputStream();
   while ((i = resource.read(buffer, 0, buffer.length)) != -1) {
     out.write(buffer, 0, i);
   }
   out.flush();
   out.close();
   return new String(out.toByteArray(), "UTF-8");
 }
Пример #12
0
  private ICC_Profile buildICCProfile(
      final ImageInfo info, final ColorSpace colorSpace, final ByteArrayOutputStream iccStream)
      throws IOException {
    if (iccStream != null && iccStream.size() > 0) {
      if (log.isDebugEnabled()) {
        log.debug("Effective ICC profile size: " + iccStream.size());
      }
      final int alignment = 4;
      final int padding = (alignment - iccStream.size() % alignment) % alignment;
      if (padding != 0) {
        try {
          iccStream.write(new byte[padding]);
        } catch (final IOException ioe) {
          throw new IOException("Error while aligning ICC stream: " + ioe.getMessage());
        }
      }

      ICC_Profile iccProfile = null;
      try {
        iccProfile = ColorProfileUtil.getICC_Profile(iccStream.toByteArray());
        if (log.isDebugEnabled()) {
          log.debug("JPEG has an ICC profile: " + iccProfile.toString());
        }
      } catch (final IllegalArgumentException iae) {
        log.warn(
            "An ICC profile is present in the JPEG file but it is invalid ("
                + iae.getMessage()
                + "). The color profile will be ignored. ("
                + info.getOriginalURI()
                + ")");
        return null;
      }
      if (iccProfile.getNumComponents() != colorSpace.getNumComponents()) {
        log.warn(
            "The number of components of the ICC profile ("
                + iccProfile.getNumComponents()
                + ") doesn't match the image ("
                + colorSpace.getNumComponents()
                + "). Ignoring the ICC color profile.");
        return null;
      } else {
        return iccProfile;
      }
    } else {
      return null; // no ICC profile available
    }
  }
Пример #13
0
 // TODO move to separate thread?
 public void compress() {
   if (!compressed) {
     Deflater deflater = new Deflater();
     deflater.setInput(fileData);
     deflater.setLevel(Deflater.BEST_COMPRESSION);
     deflater.finish();
     ByteArrayOutputStream bos = new ByteArrayOutputStream(fileData.length);
     byte[] buffer = new byte[1024];
     while (!deflater.finished()) {
       int bytesCompressed = deflater.deflate(buffer);
       bos.write(buffer, 0, bytesCompressed);
     }
     try {
       bos.close();
     } catch (IOException e) {
       e.printStackTrace();
     }
     fileData = bos.toByteArray();
     compressed = true;
   }
 }
Пример #14
0
  /**
   * Decompresses a compressed byte array.
   *
   * @param input The byte array to be decompressed.
   * @return The byte array in its decompressed, readable form.
   */
  public static byte[] decompress(byte[] input) {
    try {
      final Inflater inflater = new Inflater();
      final ByteArrayOutputStream byteOutput = new ByteArrayOutputStream(input.length);
      final byte[] buffer = new byte[1024];
      inflater.setInput(input);

      while (!inflater.finished()) {
        final int count = inflater.inflate(buffer);
        byteOutput.write(buffer, 0, count);
      }

      byteOutput.close();
      return byteOutput.toByteArray();
    } catch (final DataFormatException e) {
      RadixCore.getInstance().quitWithException("Error decompressing byte array.", e);
      return null;
    } catch (final IOException e) {
      RadixCore.getInstance().quitWithException("Error decompressing byte array.", e);
      return null;
    }
  }
Пример #15
0
  /**
   * Compresses the data in a byte array.
   *
   * @param input The byte array to be compressed.
   * @return The byte array in its compressed form.
   */
  public static byte[] compress(byte[] input) {
    try {
      final Deflater deflater = new Deflater();
      deflater.setLevel(Deflater.BEST_COMPRESSION);
      deflater.setInput(input);

      final ByteArrayOutputStream byteOutput = new ByteArrayOutputStream(input.length);
      deflater.finish();

      final byte[] buffer = new byte[1024];

      while (!deflater.finished()) {
        final int count = deflater.deflate(buffer);
        byteOutput.write(buffer, 0, count);
      }

      byteOutput.close();
      return byteOutput.toByteArray();
    } catch (final IOException e) {
      RadixCore.getInstance().quitWithException("Error compressing byte array.", e);
      return null;
    }
  }
Пример #16
0
  /**
   * Build, send and process a tracker announce request.
   *
   * <p>This function first builds an announce request for the specified event with all the required
   * parameters. Then, the request is made to the tracker and the response analyzed.
   *
   * <p>All registered {@link AnnounceResponseListener} objects are then fired with the decoded
   * payload.
   *
   * @param event The announce event type (can be AnnounceEvent.NONE for periodic updates).
   * @param inhibitEvents Prevent event listeners from being notified.
   */
  @Override
  public void announce(AnnounceRequestMessage.RequestEvent event, boolean inhibitEvents)
      throws AnnounceException {
    logger.info(
        "Announcing{} to tracker with {}U/{}D/{}L bytes...",
        new Object[] {
          this.formatAnnounceEvent(event),
          this.torrent.getUploaded(),
          this.torrent.getDownloaded(),
          this.torrent.getLeft()
        });

    URL target = null;
    try {
      HTTPAnnounceRequestMessage request = this.buildAnnounceRequest(event);
      target = request.buildAnnounceURL(this.tracker.toURL());
    } catch (MalformedURLException mue) {
      throw new AnnounceException("Invalid announce URL (" + mue.getMessage() + ")", mue);
    } catch (MessageValidationException mve) {
      throw new AnnounceException(
          "Announce request creation violated " + "expected protocol (" + mve.getMessage() + ")",
          mve);
    } catch (IOException ioe) {
      throw new AnnounceException(
          "Error building announce request (" + ioe.getMessage() + ")", ioe);
    }

    HttpURLConnection conn = null;
    InputStream in = null;
    try {
      conn = (HttpURLConnection) target.openConnection();
      in = conn.getInputStream();
    } catch (IOException ioe) {
      if (conn != null) {
        in = conn.getErrorStream();
      }
    }

    // At this point if the input stream is null it means we have neither a
    // response body nor an error stream from the server. No point in going
    // any further.
    if (in == null) {
      throw new AnnounceException("No response or unreachable tracker!");
    }

    try {
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      baos.write(in);

      // Parse and handle the response
      HTTPTrackerMessage message = HTTPTrackerMessage.parse(ByteBuffer.wrap(baos.toByteArray()));
      baos.close(); // close stream
      this.handleTrackerAnnounceResponse(message, inhibitEvents);
    } catch (IOException ioe) {
      throw new AnnounceException("Error reading tracker response!", ioe);
    } catch (MessageValidationException mve) {
      throw new AnnounceException(
          "Tracker message violates expected " + "protocol (" + mve.getMessage() + ")", mve);
    } finally {
      // Make sure we close everything down at the end to avoid resource
      // leaks.
      try {
        in.close();
      } catch (IOException ioe) {
        logger.warn("Problem ensuring error stream closed!", ioe);
      }

      // This means trying to close the error stream as well.
      InputStream err = conn.getErrorStream();
      if (err != null) {
        try {
          err.close();
        } catch (IOException ioe) {
          logger.warn("Problem ensuring error stream closed!", ioe);
        }
      }
    }
  }
Пример #17
0
 public static InputStream toBufferedInputStream(InputStream input) throws IOException {
   ByteArrayOutputStream output = new ByteArrayOutputStream();
   output.write(input);
   return output.toBufferedInputStream();
 }
Пример #18
0
  /**
   * Processes a compressed entry from an archive
   *
   * @param name The name of the entry
   * @param isDirectory true if the entry is a directory, false otherwise
   * @param is an InputStream for reading the uncompressed data of the entry
   * @param filterParam is an additional param for entry filtering function
   * @param storeParam is an additional param for entry storing function
   * @throws XMLDBException
   */
  protected Sequence processCompressedEntry(
      String name, boolean isDirectory, InputStream is, Sequence filterParam, Sequence storeParam)
      throws IOException, XPathException, XMLDBException {
    String dataType = isDirectory ? "folder" : "resource";

    // call the entry-filter function
    Sequence filterParams[] = new Sequence[3];
    filterParams[0] = new StringValue(name);
    filterParams[1] = new StringValue(dataType);
    filterParams[2] = filterParam;
    Sequence entryFilterFunctionResult =
        entryFilterFunction.evalFunction(contextSequence, null, filterParams);

    if (BooleanValue.FALSE == entryFilterFunctionResult.itemAt(0)) {
      return Sequence.EMPTY_SEQUENCE;
    } else {
      Sequence entryDataFunctionResult;
      Sequence uncompressedData = Sequence.EMPTY_SEQUENCE;

      // copy the input data
      ByteArrayOutputStream baos = new ByteArrayOutputStream();
      byte buf[] = new byte[1024];
      int read = -1;
      while ((read = is.read(buf)) != -1) {
        baos.write(buf, 0, read);
      }
      byte[] entryData = baos.toByteArray();

      if (entryDataFunction.getSignature().getArgumentCount() == 3) {

        Sequence dataParams[] = new Sequence[3];
        System.arraycopy(filterParams, 0, dataParams, 0, 2);
        dataParams[2] = storeParam;
        entryDataFunctionResult = entryDataFunction.evalFunction(contextSequence, null, dataParams);

        String path = entryDataFunctionResult.itemAt(0).getStringValue();

        Collection root =
            new LocalCollection(
                context.getUser(),
                context.getBroker().getBrokerPool(),
                new AnyURIValue("/db").toXmldbURI(),
                context.getAccessContext());

        if (isDirectory) {

          XMLDBAbstractCollectionManipulator.createCollection(root, path);

        } else {

          Resource resource;

          File file = new File(path);
          name = file.getName();
          path = file.getParent();

          Collection target =
              (path == null)
                  ? root
                  : XMLDBAbstractCollectionManipulator.createCollection(root, path);

          MimeType mime = MimeTable.getInstance().getContentTypeFor(name);

          try {
            NodeValue content =
                ModuleUtils.streamToXML(context, new ByteArrayInputStream(baos.toByteArray()));
            resource = target.createResource(name, "XMLResource");
            ContentHandler handler = ((XMLResource) resource).setContentAsSAX();
            handler.startDocument();
            content.toSAX(context.getBroker(), handler, null);
            handler.endDocument();
          } catch (SAXException e) {
            resource = target.createResource(name, "BinaryResource");
            resource.setContent(baos.toByteArray());
          }

          if (resource != null) {
            if (mime != null) {
              ((EXistResource) resource).setMimeType(mime.getName());
            }
            target.storeResource(resource);
          }
        }

      } else {

        // try and parse as xml, fall back to binary
        try {
          uncompressedData = ModuleUtils.streamToXML(context, new ByteArrayInputStream(entryData));
        } catch (SAXException saxe) {
          if (entryData.length > 0)
            uncompressedData =
                BinaryValueFromInputStream.getInstance(
                    context, new Base64BinaryValueType(), new ByteArrayInputStream(entryData));
        }

        // call the entry-data function
        Sequence dataParams[] = new Sequence[4];
        System.arraycopy(filterParams, 0, dataParams, 0, 2);
        dataParams[2] = uncompressedData;
        dataParams[3] = storeParam;
        entryDataFunctionResult = entryDataFunction.evalFunction(contextSequence, null, dataParams);
      }

      return entryDataFunctionResult;
    }
  }
Пример #19
0
  /** {@inheritDoc} */
  @Override
  public Image loadImage(final ImageInfo info, final Map hints, final ImageSessionContext session)
      throws ImageException, IOException {
    if (!MimeConstants.MIME_JPEG.equals(info.getMimeType())) {
      throw new IllegalArgumentException(
          "ImageInfo must be from a image with MIME type: " + MimeConstants.MIME_JPEG);
    }

    ColorSpace colorSpace = null;
    boolean appeFound = false;
    int sofType = 0;
    ByteArrayOutputStream iccStream = null;

    final Source src = session.needSource(info.getOriginalURI());
    final ImageInputStream in = ImageUtil.needImageInputStream(src);
    final JPEGFile jpeg = new JPEGFile(in);
    in.mark();
    try {
      outer:
      while (true) {
        int reclen;
        final int segID = jpeg.readMarkerSegment();
        if (log.isTraceEnabled()) {
          log.trace("Seg Marker: " + Integer.toHexString(segID));
        }
        switch (segID) {
          case EOI:
            log.trace("EOI found. Stopping.");
            break outer;
          case SOS:
            log.trace("SOS found. Stopping early."); // TODO Not sure if
            // this is safe
            break outer;
          case SOI:
          case NULL:
            break;
          case SOF0: // baseline
          case SOF1: // extended sequential DCT
          case SOF2: // progressive (since PDF 1.3)
          case SOFA: // progressive (since PDF 1.3)
            sofType = segID;
            if (log.isTraceEnabled()) {
              log.trace("SOF: " + Integer.toHexString(sofType));
            }
            in.mark();
            try {
              reclen = jpeg.readSegmentLength();
              in.skipBytes(1); // data precision
              in.skipBytes(2); // height
              in.skipBytes(2); // width
              final int numComponents = in.readUnsignedByte();
              if (numComponents == 1) {
                colorSpace = ColorSpace.getInstance(ColorSpace.CS_GRAY);
              } else if (numComponents == 3) {
                colorSpace = ColorSpace.getInstance(ColorSpace.CS_LINEAR_RGB);
              } else if (numComponents == 4) {
                colorSpace = ColorSpaces.getDeviceCMYKColorSpace();
              } else {
                throw new ImageException(
                    "Unsupported ColorSpace for image "
                        + info
                        + ". The number of components supported are 1, 3 and 4.");
              }
            } finally {
              in.reset();
            }
            in.skipBytes(reclen);
            break;
          case APP2: // ICC (see ICC1V42.pdf)
            in.mark();
            try {
              reclen = jpeg.readSegmentLength();
              // Check for ICC profile
              final byte[] iccString = new byte[11];
              in.readFully(iccString);
              in.skipBytes(1); // string terminator (null byte)

              if ("ICC_PROFILE".equals(new String(iccString, "US-ASCII"))) {
                in.skipBytes(2); // chunk sequence number and total
                // number of chunks
                final int payloadSize = reclen - 2 - 12 - 2;
                if (ignoreColorProfile(hints)) {
                  log.debug("Ignoring ICC profile data in JPEG");
                  in.skipBytes(payloadSize);
                } else {
                  final byte[] buf = new byte[payloadSize];
                  in.readFully(buf);
                  if (iccStream == null) {
                    if (log.isDebugEnabled()) {
                      log.debug("JPEG has an ICC profile");
                      final DataInputStream din =
                          new DataInputStream(new ByteArrayInputStream(buf));
                      log.debug("Declared ICC profile size: " + din.readInt());
                    }
                    // ICC profiles can be split into several
                    // chunks
                    // so collect in a byte array output stream
                    iccStream = new ByteArrayOutputStream();
                  }
                  iccStream.write(buf);
                }
              }
            } finally {
              in.reset();
            }
            in.skipBytes(reclen);
            break;
          case APPE: // Adobe-specific (see 5116.DCT_Filter.pdf)
            in.mark();
            try {
              reclen = jpeg.readSegmentLength();
              // Check for Adobe header
              final byte[] adobeHeader = new byte[5];
              in.readFully(adobeHeader);

              if ("Adobe".equals(new String(adobeHeader, "US-ASCII"))) {
                // The reason for reading the APPE marker is that
                // Adobe Photoshop
                // generates CMYK JPEGs with inverted values. The
                // correct thing
                // to do would be to interpret the values in the
                // marker, but for now
                // only assume that if APPE marker is present and
                // colorspace is CMYK,
                // the image is inverted.
                appeFound = true;
              }
            } finally {
              in.reset();
            }
            in.skipBytes(reclen);
            break;
          default:
            jpeg.skipCurrentMarkerSegment();
        }
      }
    } finally {
      in.reset();
    }

    final ICC_Profile iccProfile = buildICCProfile(info, colorSpace, iccStream);
    if (iccProfile == null && colorSpace == null) {
      throw new ImageException("ColorSpace could not be identified for JPEG image " + info);
    }

    boolean invertImage = false;
    if (appeFound && colorSpace.getType() == ColorSpace.TYPE_CMYK) {
      if (log.isDebugEnabled()) {
        log.debug(
            "JPEG has an Adobe APPE marker. Note: CMYK Image will be inverted. ("
                + info.getOriginalURI()
                + ")");
      }
      invertImage = true;
    }

    final ImageRawJPEG rawImage =
        new ImageRawJPEG(
            info, ImageUtil.needInputStream(src), sofType, colorSpace, iccProfile, invertImage);
    return rawImage;
  }
  public static String downloadURL(String urlIn, String folderOut, String mongoHostIP)
      throws IOException {
    System.out.println("downloadURL");
    String imgHash = null;
    byte[] data = null;

    // connect to URL and get input stream
    URL imageURL = new URL(urlIn);
    File localDir = new File(folderOut);
    localDir.mkdir();

    InputStream inputStream = null;
    URLConnection urlConnection = null;
    int noOfBytes = 0;
    byte[] byteChunk = new byte[4096];
    ByteArrayOutputStream byteOutputStream = new ByteArrayOutputStream();
    urlConnection = imageURL.openConnection();
    urlConnection.addRequestProperty(
        "User-Agent",
        "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.4; en-US; rv:1.9.2.2) Gecko/20100316 Firefox/3.6.2");
    urlConnection.connect();
    inputStream = urlConnection.getInputStream();
    while ((noOfBytes = inputStream.read(byteChunk)) > 0) {
      byteOutputStream.write(byteChunk, 0, noOfBytes);
    }
    // hash creation from image file
    try {
      System.out.println("Start MD5 Digest");
      data = byteOutputStream.toByteArray();
      MessageDigest md = MessageDigest.getInstance("MD5");
      md.update(data);
      byte[] hash = md.digest();
      imgHash = String.format("%032x", new java.math.BigInteger(1, hash));
      System.out.println("Hash : " + imgHash);
    } catch (NoSuchAlgorithmException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
    }

    MongoClient mongoclient = new MongoClient(mongoHostIP, 27017);
    // System.out.println("mongoHostIP :: " + mongoHostIP);
    Morphia morphia = new Morphia();
    morphia.map(ForensicReport.class).map(dqReport.class);
    Datastore ds = new Morphia().createDatastore(mongoclient, "ForensicDatabase");
    ds.ensureCaps();

    String baseFolder = folderOut + imgHash + "/";
    ForensicReport report = ds.get(ForensicReport.class, imgHash);
    // check if hash exist
    if (report != null) {
      System.out.println("Exists");
    } else {
      // if hash does not exist in database, then download the image
      report = new ForensicReport();
      report.id = imgHash;
      try {
        File writeFolder = new File(baseFolder);
        if (!writeFolder.exists()) writeFolder.mkdirs();
        File imageFile = new File(baseFolder, "Raw");
        OutputStream outputStream = new FileOutputStream(imageFile);

        byteOutputStream.writeTo(outputStream);
        outputStream.close();
        BufferedImage downloadedImage = ImageIO.read(imageFile);
        ImageIO.write(downloadedImage, "JPEG", new File(baseFolder, "Display.jpg"));
        // store in database image information
        report.sourceImage = baseFolder + "Raw";
        report.displayImage = baseFolder + "Display.jpg";
        report.sourceURL = urlIn;
        report.status = "Downloaded";
        ds.save(report);
      } catch (Exception e) {
        e.printStackTrace();
        mongoclient.close();
        return "URL_ERROR";
      }
    }
    mongoclient.close();
    System.out.println("Downloaded.");
    return imgHash;
  }