/**
 * 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.network;

import java.io.EOFException;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.GatheringByteChannel;

/**
 * A send backed by an array of byte buffers
 */
public class ByteBufferSend implements Send {

    private final int destination;
    protected final ByteBuffer[] buffers;
    private int remaining;

    public ByteBufferSend(int destination, ByteBuffer... buffers) {
        super();
        this.destination = destination;
        this.buffers = buffers;
        for (int i = 0; i < buffers.length; i++)
            remaining += buffers[i].remaining();
    }

    @Override
    public int destination() {
        return destination;
    }

    @Override
    public boolean complete() {
        return remaining > 0;
    }

    @Override
    public ByteBuffer[] reify() {
        return this.buffers;
    }

    @Override
    public int remaining() {
        return this.remaining;
    }

    @Override
    public long writeTo(GatheringByteChannel channel) throws IOException {
        long written = channel.write(buffers);
        if (written < 0)
            throw new EOFException("This shouldn't happen.");
        remaining -= written;
        return written;
    }

}

/**
 * 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.network;

import java.io.EOFException;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.GatheringByteChannel;

/**
 * A send backed by an array of byte buffers
 */
public class ByteBufferSend implements Send {

    private final int destination;
    protected final ByteBuffer[] buffers;
    private int remaining;

    public ByteBufferSend(int destination, ByteBuffer... buffers) {
        super();
        this.destination = destination;
        this.buffers = buffers;
        for (int i = 0; i < buffers.length; i++)
            remaining += buffers[i].remaining();
    }

    @Override
    public int destination() {
        return destination;
    }

    @Override
    public boolean complete() {
        return remaining <= 0;
    }

    @Override
    public ByteBuffer[] reify() {
        return this.buffers;
    }

    @Override
    public int remaining() {
        return this.remaining;
    }

    @Override
    public long writeTo(GatheringByteChannel channel) throws IOException {
        long written = channel.write(buffers);
        if (written < 0)
            throw new EOFException("This shouldn't happen.");
        remaining -= written;
        return written;
    }

}

Fix bug in ByteBufferSend that lead to incorrect complete() method.