org.apache.hudi.org.apache.hadoop.hbase.security.CryptoAESWrapHandler 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.hadoop.hbase.security;
import org.apache.hadoop.hbase.exceptions.ConnectionClosedException;
import org.apache.hbase.thirdparty.io.netty.buffer.ByteBuf;
import org.apache.hbase.thirdparty.io.netty.buffer.Unpooled;
import org.apache.hbase.thirdparty.io.netty.channel.ChannelHandlerContext;
import org.apache.hbase.thirdparty.io.netty.channel.ChannelOutboundHandlerAdapter;
import org.apache.hbase.thirdparty.io.netty.channel.ChannelPromise;
import org.apache.hbase.thirdparty.io.netty.channel.CoalescingBufferQueue;
import org.apache.hbase.thirdparty.io.netty.util.ReferenceCountUtil;
import org.apache.hbase.thirdparty.io.netty.util.concurrent.PromiseCombiner;
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.hadoop.hbase.io.crypto.aes.CryptoAES;
/**
* wrap messages with Crypto AES.
*/
@InterfaceAudience.Private
public class CryptoAESWrapHandler extends ChannelOutboundHandlerAdapter {
private final CryptoAES cryptoAES;
private CoalescingBufferQueue queue;
public CryptoAESWrapHandler(CryptoAES cryptoAES) {
this.cryptoAES = cryptoAES;
}
@Override
public void handlerAdded(ChannelHandlerContext ctx) throws Exception {
queue = new CoalescingBufferQueue(ctx.channel());
}
@Override
public void write(ChannelHandlerContext ctx, Object msg, ChannelPromise promise)
throws Exception {
if (msg instanceof ByteBuf) {
queue.add((ByteBuf) msg, promise);
} else {
ctx.write(msg, promise);
}
}
@Override
public void flush(ChannelHandlerContext ctx) throws Exception {
if (queue.isEmpty()) {
return;
}
ByteBuf buf = null;
try {
ChannelPromise promise = ctx.newPromise();
int readableBytes = queue.readableBytes();
buf = queue.remove(readableBytes, promise);
byte[] bytes = new byte[readableBytes];
buf.readBytes(bytes);
byte[] wrapperBytes = cryptoAES.wrap(bytes, 0, bytes.length);
ChannelPromise lenPromise = ctx.newPromise();
ctx.write(ctx.alloc().buffer(4).writeInt(wrapperBytes.length), lenPromise);
ChannelPromise contentPromise = ctx.newPromise();
ctx.write(Unpooled.wrappedBuffer(wrapperBytes), contentPromise);
PromiseCombiner combiner = new PromiseCombiner();
combiner.addAll(lenPromise, contentPromise);
combiner.finish(promise);
ctx.flush();
} finally {
if (buf != null) {
ReferenceCountUtil.safeRelease(buf);
}
}
}
@Override
public void close(ChannelHandlerContext ctx, ChannelPromise promise) throws Exception {
if (!queue.isEmpty()) {
queue.releaseAndFailAll(new ConnectionClosedException("Connection closed"));
}
ctx.close(promise);
}
}