| /* |
| * 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.requests; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import java.nio.channels.GatheringByteChannel; |
| |
| public class ByteBufferChannel implements GatheringByteChannel { |
| private final ByteBuffer buf; |
| private boolean closed = false; |
| |
| public ByteBufferChannel(long size) { |
| if (size > Integer.MAX_VALUE) |
| throw new IllegalArgumentException("size should be not be greater than Integer.MAX_VALUE"); |
| this.buf = ByteBuffer.allocate((int) size); |
| } |
| |
| @Override |
| public long write(ByteBuffer[] srcs, int offset, int length) throws IOException { |
| int position = buf.position(); |
| for (int i = 0; i < length; i++) { |
| ByteBuffer src = srcs[i].duplicate(); |
| if (i == 0) |
| src.position(offset); |
| buf.put(src); |
| } |
| return buf.position() - position; |
| } |
| |
| @Override |
| public long write(ByteBuffer[] srcs) throws IOException { |
| return write(srcs, 0, srcs.length); |
| } |
| |
| @Override |
| public int write(ByteBuffer src) throws IOException { |
| int position = buf.position(); |
| buf.put(src); |
| return buf.position() - position; |
| } |
| |
| @Override |
| public boolean isOpen() { |
| return !closed; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| buf.flip(); |
| closed = true; |
| } |
| |
| public ByteBuffer buffer() { |
| return buf; |
| } |
| } |