/**
* Copyright 2016 LinkedIn Corp. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*/
package com.github.ambry.store;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.ReadableByteChannel;
/**
* A write interface provided by the underlying store to write to it
*/
public interface Write {
/**
* Appends the buffer into the underlying write interface (eg: file). Returns the number of bytes
* successfully written
* @param buffer The buffer from which data needs to be written from
* @return The number of bytes written to the write interface
* @throws IOException
*/
int appendFrom(ByteBuffer buffer) throws IOException;
/**
* Appends the channel to the underlying write interface. Writes "size" number of bytes
* to the interface.
* @param channel The channel from which data needs to be written from
* @param size The amount of data in bytes to be written from the channel
* @throws IOException
*/
void appendFrom(ReadableByteChannel channel, long size) throws IOException;
}