org.apache.hadoop.fs.HasEnhancedByteBufferAccess Java Examples

The following examples show how to use org.apache.hadoop.fs.HasEnhancedByteBufferAccess. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: CryptoInputStream.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
@Override
public ByteBuffer read(ByteBufferPool bufferPool, int maxLength,
    EnumSet<ReadOption> opts) throws IOException,
    UnsupportedOperationException {
  checkStream();
  try {
    if (outBuffer.remaining() > 0) {
      // Have some decrypted data unread, need to reset.
      ((Seekable) in).seek(getPos());
      resetStreamOffset(getPos());
    }
    final ByteBuffer buffer = ((HasEnhancedByteBufferAccess) in).
        read(bufferPool, maxLength, opts);
    if (buffer != null) {
      final int n = buffer.remaining();
      if (n > 0) {
        streamOffset += buffer.remaining(); // Read n bytes
        final int pos = buffer.position();
        decrypt(buffer, n, pos);
      }
    }
    return buffer;
  } catch (ClassCastException e) {
    throw new UnsupportedOperationException("This stream does not support " + 
        "enhanced byte buffer access.");
  }
}
Example #2
Source File: CryptoInputStream.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
@Override
public void releaseBuffer(ByteBuffer buffer) {
  try {
    ((HasEnhancedByteBufferAccess) in).releaseBuffer(buffer);
  } catch (ClassCastException e) {
    throw new UnsupportedOperationException("This stream does not support " + 
        "release buffer.");
  }
}
Example #3
Source File: CryptoStreamsTestBase.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
@Test(timeout=120000)
public void testHasEnhancedByteBufferAccess() throws Exception {
  OutputStream out = getOutputStream(defaultBufferSize);
  writeData(out);
  
  InputStream in = getInputStream(defaultBufferSize);
  final int len1 = dataLen / 8;
  // ByteBuffer size is len1
  ByteBuffer buffer = ((HasEnhancedByteBufferAccess) in).read(
      getBufferPool(), len1, EnumSet.of(ReadOption.SKIP_CHECKSUMS));
  int n1 = buffer.remaining();
  byte[] readData = new byte[n1];
  buffer.get(readData);
  byte[] expectedData = new byte[n1];
  System.arraycopy(data, 0, expectedData, 0, n1);
  Assert.assertArrayEquals(readData, expectedData);
  ((HasEnhancedByteBufferAccess) in).releaseBuffer(buffer);
  
  // Read len1 bytes
  readData = new byte[len1];
  readAll(in, readData, 0, len1);
  expectedData = new byte[len1];
  System.arraycopy(data, n1, expectedData, 0, len1);
  Assert.assertArrayEquals(readData, expectedData);
  
  // ByteBuffer size is len1
  buffer = ((HasEnhancedByteBufferAccess) in).read(
      getBufferPool(), len1, EnumSet.of(ReadOption.SKIP_CHECKSUMS));
  int n2 = buffer.remaining();
  readData = new byte[n2];
  buffer.get(readData);
  expectedData = new byte[n2];
  System.arraycopy(data, n1 + len1, expectedData, 0, n2);
  Assert.assertArrayEquals(readData, expectedData);
  ((HasEnhancedByteBufferAccess) in).releaseBuffer(buffer);
  
  in.close();
}
Example #4
Source File: CryptoInputStream.java    From big-c with Apache License 2.0 5 votes vote down vote up 
@Override
public ByteBuffer read(ByteBufferPool bufferPool, int maxLength,
    EnumSet<ReadOption> opts) throws IOException,
    UnsupportedOperationException {
  checkStream();
  try {
    if (outBuffer.remaining() > 0) {
      // Have some decrypted data unread, need to reset.
      ((Seekable) in).seek(getPos());
      resetStreamOffset(getPos());
    }
    final ByteBuffer buffer = ((HasEnhancedByteBufferAccess) in).
        read(bufferPool, maxLength, opts);
    if (buffer != null) {
      final int n = buffer.remaining();
      if (n > 0) {
        streamOffset += buffer.remaining(); // Read n bytes
        final int pos = buffer.position();
        decrypt(buffer, n, pos);
      }
    }
    return buffer;
  } catch (ClassCastException e) {
    throw new UnsupportedOperationException("This stream does not support " + 
        "enhanced byte buffer access.");
  }
}
Example #5
Source File: CryptoInputStream.java    From big-c with Apache License 2.0 5 votes vote down vote up 
@Override
public void releaseBuffer(ByteBuffer buffer) {
  try {
    ((HasEnhancedByteBufferAccess) in).releaseBuffer(buffer);
  } catch (ClassCastException e) {
    throw new UnsupportedOperationException("This stream does not support " + 
        "release buffer.");
  }
}
Example #6
Source File: CryptoStreamsTestBase.java    From big-c with Apache License 2.0 5 votes vote down vote up 
@Test(timeout=120000)
public void testHasEnhancedByteBufferAccess() throws Exception {
  OutputStream out = getOutputStream(defaultBufferSize);
  writeData(out);
  
  InputStream in = getInputStream(defaultBufferSize);
  final int len1 = dataLen / 8;
  // ByteBuffer size is len1
  ByteBuffer buffer = ((HasEnhancedByteBufferAccess) in).read(
      getBufferPool(), len1, EnumSet.of(ReadOption.SKIP_CHECKSUMS));
  int n1 = buffer.remaining();
  byte[] readData = new byte[n1];
  buffer.get(readData);
  byte[] expectedData = new byte[n1];
  System.arraycopy(data, 0, expectedData, 0, n1);
  Assert.assertArrayEquals(readData, expectedData);
  ((HasEnhancedByteBufferAccess) in).releaseBuffer(buffer);
  
  // Read len1 bytes
  readData = new byte[len1];
  readAll(in, readData, 0, len1);
  expectedData = new byte[len1];
  System.arraycopy(data, n1, expectedData, 0, len1);
  Assert.assertArrayEquals(readData, expectedData);
  
  // ByteBuffer size is len1
  buffer = ((HasEnhancedByteBufferAccess) in).read(
      getBufferPool(), len1, EnumSet.of(ReadOption.SKIP_CHECKSUMS));
  int n2 = buffer.remaining();
  readData = new byte[n2];
  buffer.get(readData);
  expectedData = new byte[n2];
  System.arraycopy(data, n1 + len1, expectedData, 0, n2);
  Assert.assertArrayEquals(readData, expectedData);
  ((HasEnhancedByteBufferAccess) in).releaseBuffer(buffer);
  
  in.close();
}