org.apache.kafka.common.record.UnalignedMemoryRecords Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.kafka.common.record;
import org.apache.kafka.common.network.TransferableChannel;
import org.apache.kafka.common.utils.Utils;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Objects;
/**
* Represents a memory record set which is not necessarily offset-aligned
*/
public class UnalignedMemoryRecords implements UnalignedRecords {
private final ByteBuffer buffer;
public UnalignedMemoryRecords(ByteBuffer buffer) {
this.buffer = Objects.requireNonNull(buffer);
}
public ByteBuffer buffer() {
return buffer.duplicate();
}
@Override
public int sizeInBytes() {
return buffer.remaining();
}
@Override
public long writeTo(TransferableChannel channel, long position, int length) throws IOException {
if (position > Integer.MAX_VALUE)
throw new IllegalArgumentException("position should not be greater than Integer.MAX_VALUE: " + position);
if (position + length > buffer.limit())
throw new IllegalArgumentException("position+length should not be greater than buffer.limit(), position: "
+ position + ", length: " + length + ", buffer.limit(): " + buffer.limit());
return Utils.tryWriteTo(channel, (int) position, length, buffer);
}
}