/*
* The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
* (the "License"). You may not use this work except in compliance with the License, which is
* available at www.apache.org/licenses/LICENSE-2.0
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied, as more fully set forth in the License.
*
* See the NOTICE file distributed with this work for information regarding copyright ownership.
*/
package alluxio.network.protocol.databuffer;
import com.google.common.base.Preconditions;
import io.netty.buffer.ByteBuf;
import java.nio.ByteBuffer;
/**
* A DataBuffer with the underlying data being a {@link ByteBuf}. This is a new version of
* {@link DataNettyBuffer}.
*/
// TODO(peis): Deprecate {@link DataNettyBuffer}.
public final class DataNettyBufferV2 implements DataBuffer {
private final ByteBuf mNettyBuf;
/**
* Constructor for creating a DataNettyBuffer, by passing a Netty ByteBuf.
*
* @param bytebuf The ByteBuf having the data
*/
public DataNettyBufferV2(ByteBuf bytebuf) {
Preconditions.checkNotNull(bytebuf, "bytebuf");
mNettyBuf = bytebuf;
}
/**
* @return the netty buffer
*/
@Override
public Object getNettyOutput() {
return mNettyBuf;
}
@Override
public long getLength() {
return mNettyBuf.readableBytes();
}
@Override
public ByteBuffer getReadOnlyByteBuffer() {
throw new RuntimeException("DataNettyBufferV2::getReadOnlyByteBuffer is not supported.");
}
@Override
public void readBytes(byte[] dst, int dstIndex, int length) {
mNettyBuf.readBytes(dst, dstIndex, length);
}
@Override
public int readableBytes() {
return mNettyBuf.readableBytes();
}
/**
* Release the Netty ByteBuf.
*/
@Override
public void release() {
mNettyBuf.release();
}
}