dubbo DirectChannelBufferFactory 源码
dubbo DirectChannelBufferFactory 代码
文件路径：/dubbo-remoting/dubbo-remoting-api/src/main/java/org/apache/dubbo/remoting/buffer/DirectChannelBufferFactory.java
/*
* 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.dubbo.remoting.buffer;
import java.nio.ByteBuffer;
public class DirectChannelBufferFactory implements ChannelBufferFactory {
private static final DirectChannelBufferFactory INSTANCE = new DirectChannelBufferFactory();
public DirectChannelBufferFactory() {
super();
}
public static ChannelBufferFactory getInstance() {
return INSTANCE;
}
@Override
public ChannelBuffer getBuffer(int capacity) {
if (capacity < 0) {
throw new IllegalArgumentException("capacity: " + capacity);
}
if (capacity == 0) {
return ChannelBuffers.EMPTY_BUFFER;
}
return ChannelBuffers.directBuffer(capacity);
}
@Override
public ChannelBuffer getBuffer(byte[] array, int offset, int length) {
if (array == null) {
throw new NullPointerException("array");
}
if (offset < 0) {
throw new IndexOutOfBoundsException("offset: " + offset);
}
if (length == 0) {
return ChannelBuffers.EMPTY_BUFFER;
}
if (offset + length > array.length) {
throw new IndexOutOfBoundsException("length: " + length);
}
ChannelBuffer buf = getBuffer(length);
buf.writeBytes(array, offset, length);
return buf;
}
@Override
public ChannelBuffer getBuffer(ByteBuffer nioBuffer) {
if (!nioBuffer.isReadOnly() && nioBuffer.isDirect()) {
return ChannelBuffers.wrappedBuffer(nioBuffer);
}
ChannelBuffer buf = getBuffer(nioBuffer.remaining());
int pos = nioBuffer.position();
buf.writeBytes(nioBuffer);
nioBuffer.position(pos);
return buf;
}
}
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dubbo AbstractChannelBuffer 源码
dubbo ByteBufferBackedChannelBuffer 源码
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