[Feature] Add zstd encoder (#11437)
Motivation: As discussed in #10422, ZstdEncoder can be added separately Modification: Add ZstdEncoder separately Result: netty supports ZSTD with ZstdEncoder Signed-off-by: xingrufei <xingrufei@sogou-inc.com> Co-authored-by: xingrufei <xingrufei@sogou-inc.com>
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NOTICE.txt
10
NOTICE.txt
@ -125,6 +125,14 @@ and decompression library, which can be obtained at:
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* HOMEPAGE:
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* https://github.com/jponge/lzma-java
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This product optionally depends on 'zstd-jni', a zstd-jni Java compression
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and decompression library, which can be obtained at:
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* LICENSE:
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* license/LICENSE.zstd-jni.txt (Apache License 2.0)
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* HOMEPAGE:
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* https://github.com/luben/zstd-jni
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This product contains a modified portion of 'jfastlz', a Java port of FastLZ compression
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and decompression library written by William Kinney. It can be obtained at:
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@ -196,7 +204,7 @@ non-blocking XML processor, which can be obtained at:
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* LICENSE:
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* license/LICENSE.aalto-xml.txt (Apache License 2.0)
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* HOMEPAGE:
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* http://wiki.fasterxml.com/AaltoHome
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* https://wiki.fasterxml.com/AaltoHome
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This product contains a modified version of 'HPACK', a Java implementation of
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the HTTP/2 HPACK algorithm written by Twitter. It can be obtained at:
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@ -83,6 +83,11 @@
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<artifactId>lzma-java</artifactId>
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<optional>true</optional>
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</dependency>
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<dependency>
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<groupId>com.github.luben</groupId>
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<artifactId>zstd-jni</artifactId>
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<optional>true</optional>
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</dependency>
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<dependency>
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<groupId>com.aayushatharva.brotli4j</groupId>
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<artifactId>brotli4j</artifactId>
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@ -0,0 +1,32 @@
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/*
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* Copyright 2021 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.compression;
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final class ZstdConstants {
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static final int DEFAULT_COMPRESSION_LEVEL = 10;
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/**
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* Max block size
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*/
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static final int MAX_BLOCK_SIZE = 1 << DEFAULT_COMPRESSION_LEVEL + 0x0F; // 32 M
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/**
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* Default block size
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*/
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static final int DEFAULT_BLOCK_SIZE = 1 << 16; // 64 KB
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private ZstdConstants() { }
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}
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@ -0,0 +1,184 @@
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/*
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* Copyright 2021 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.compression;
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import com.github.luben.zstd.Zstd;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.Unpooled;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.handler.codec.EncoderException;
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import io.netty.handler.codec.MessageToByteEncoder;
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import io.netty.util.internal.ObjectUtil;
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import java.nio.ByteBuffer;
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import static io.netty.handler.codec.compression.ZstdConstants.DEFAULT_COMPRESSION_LEVEL;
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import static io.netty.handler.codec.compression.ZstdConstants.DEFAULT_BLOCK_SIZE;
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import static io.netty.handler.codec.compression.ZstdConstants.MAX_BLOCK_SIZE;
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/**
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* Compresses a {@link ByteBuf} using the Zstandard algorithm.
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* See <a href="https://facebook.github.io/zstd">Zstandard</a>.
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*/
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public final class ZstdEncoder extends MessageToByteEncoder<ByteBuf> {
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private final int blockSize;
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private final int compressionLevel;
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private final int maxEncodeSize;
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private ByteBuf buffer;
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/**
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* Creates a new Zstd encoder.
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*
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* Please note that if you use the default constructor, the default BLOCK_SIZE and MAX_BLOCK_SIZE
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* will be used. If you want to specify BLOCK_SIZE and MAX_BLOCK_SIZE yourself,
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* please use {@link ZstdEncoder(int,int)} constructor
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*/
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public ZstdEncoder() {
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this(DEFAULT_COMPRESSION_LEVEL, DEFAULT_BLOCK_SIZE, MAX_BLOCK_SIZE);
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}
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/**
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* Creates a new Zstd encoder.
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* @param compressionLevel
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* specifies the level of the compression
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*/
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public ZstdEncoder(int compressionLevel) {
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this(compressionLevel, DEFAULT_BLOCK_SIZE, MAX_BLOCK_SIZE);
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}
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/**
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* Creates a new Zstd encoder.
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* @param blockSize
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* is used to calculate the compressionLevel
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* @param maxEncodeSize
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* specifies the size of the largest compressed object
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*/
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public ZstdEncoder(int blockSize, int maxEncodeSize) {
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this(DEFAULT_COMPRESSION_LEVEL, blockSize, maxEncodeSize);
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}
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/**
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* @param blockSize
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* is used to calculate the compressionLevel
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* @param maxEncodeSize
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* specifies the size of the largest compressed object
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* @param compressionLevel
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* specifies the level of the compression
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*/
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public ZstdEncoder(int compressionLevel, int blockSize, int maxEncodeSize) {
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super(true);
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this.compressionLevel = ObjectUtil.checkPositive(compressionLevel, "compressionLevel");
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this.blockSize = ObjectUtil.checkPositive(blockSize, "blockSize");
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this.maxEncodeSize = ObjectUtil.checkPositive(maxEncodeSize, "maxEncodeSize");
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}
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@Override
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protected ByteBuf allocateBuffer(ChannelHandlerContext ctx, ByteBuf msg, boolean preferDirect) {
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if (buffer == null) {
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throw new IllegalStateException("not added to a pipeline," +
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"or has been removed,buffer is null");
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}
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int remaining = msg.readableBytes() + buffer.readableBytes();
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// quick overflow check
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if (remaining < 0) {
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throw new EncoderException("too much data to allocate a buffer for compression");
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}
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long bufferSize = 0;
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while (remaining > 0) {
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int curSize = Math.min(blockSize, remaining);
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remaining -= curSize;
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bufferSize += Zstd.compressBound(curSize);
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}
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if (bufferSize > maxEncodeSize || 0 > bufferSize) {
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throw new EncoderException("requested encode buffer size (" + bufferSize + " bytes) exceeds " +
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"the maximum allowable size (" + maxEncodeSize + " bytes)");
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}
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return ctx.alloc().directBuffer((int) bufferSize);
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}
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@Override
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protected void encode(ChannelHandlerContext ctx, ByteBuf in, ByteBuf out) {
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if (buffer == null) {
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throw new IllegalStateException("not added to a pipeline," +
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"or has been removed,buffer is null");
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}
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final ByteBuf buffer = this.buffer;
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int length;
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while ((length = in.readableBytes()) > 0) {
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final int nextChunkSize = Math.min(length, buffer.writableBytes());
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in.readBytes(buffer, nextChunkSize);
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if (!buffer.isWritable()) {
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flushBufferedData(out);
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}
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}
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}
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private void flushBufferedData(ByteBuf out) {
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final int flushableBytes = buffer.readableBytes();
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if (flushableBytes == 0) {
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return;
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}
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final int bufSize = (int) Zstd.compressBound(flushableBytes);
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out.ensureWritable(bufSize);
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final int idx = out.writerIndex();
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int compressedLength;
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try {
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ByteBuffer outNioBuffer = out.internalNioBuffer(idx, out.writableBytes());
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compressedLength = Zstd.compress(
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outNioBuffer,
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buffer.internalNioBuffer(buffer.readerIndex(), flushableBytes),
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compressionLevel);
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} catch (Exception e) {
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throw new CompressionException(e);
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}
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out.writerIndex(idx + compressedLength);
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buffer.clear();
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}
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@Override
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public void flush(final ChannelHandlerContext ctx) {
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if (buffer != null && buffer.isReadable()) {
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final ByteBuf buf = allocateBuffer(ctx, Unpooled.EMPTY_BUFFER, isPreferDirect());
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flushBufferedData(buf);
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ctx.write(buf);
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}
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ctx.flush();
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}
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@Override
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public void handlerAdded(ChannelHandlerContext ctx) {
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buffer = ctx.alloc().directBuffer(blockSize);
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buffer.clear();
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}
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@Override
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public void handlerRemoved(ChannelHandlerContext ctx) throws Exception {
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super.handlerRemoved(ctx);
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if (buffer != null) {
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buffer.release();
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buffer = null;
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}
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}
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}
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@ -0,0 +1,108 @@
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/*
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* Copyright 2021 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at:
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.compression;
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import com.github.luben.zstd.ZstdInputStream;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.ByteBufAllocator;
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import io.netty.buffer.ByteBufInputStream;
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import io.netty.buffer.Unpooled;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.embedded.EmbeddedChannel;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.MethodSource;
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import org.mockito.Mock;
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import org.mockito.MockitoAnnotations;
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import java.io.InputStream;
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import static org.mockito.Mockito.when;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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public class ZstdEncoderTest extends AbstractEncoderTest {
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@Mock
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private ChannelHandlerContext ctx;
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@BeforeEach
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public void setup() {
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MockitoAnnotations.initMocks(this);
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when(ctx.alloc()).thenReturn(ByteBufAllocator.DEFAULT);
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}
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@Override
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public EmbeddedChannel createChannel() {
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return new EmbeddedChannel(new ZstdEncoder());
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}
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@ParameterizedTest
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@MethodSource("largeData")
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public void testCompressionOfLargeBatchedFlow(final ByteBuf data) throws Exception {
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final int dataLength = data.readableBytes();
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int written = 0;
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ByteBuf in = data.retainedSlice(written, 65535);
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assertTrue(channel.writeOutbound(in));
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ByteBuf in2 = data.retainedSlice(65535, dataLength - 65535);
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assertTrue(channel.writeOutbound(in2));
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assertTrue(channel.finish());
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ByteBuf decompressed = readDecompressed(dataLength);
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assertEquals(data, decompressed);
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decompressed.release();
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data.release();
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}
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@ParameterizedTest
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@MethodSource("smallData")
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public void testCompressionOfSmallBatchedFlow(final ByteBuf data) throws Exception {
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testCompressionOfBatchedFlow(data);
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}
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@Override
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protected ByteBuf decompress(ByteBuf compressed, int originalLength) throws Exception {
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InputStream is = new ByteBufInputStream(compressed, true);
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ZstdInputStream zstdIs = null;
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byte[] decompressed = new byte[originalLength];
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try {
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zstdIs = new ZstdInputStream(is);
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int remaining = originalLength;
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while (remaining > 0) {
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int read = zstdIs.read(decompressed, originalLength - remaining, remaining);
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if (read > 0) {
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remaining -= read;
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} else {
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break;
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}
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}
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assertEquals(-1, zstdIs.read());
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} finally {
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if (zstdIs != null) {
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zstdIs.close();
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} else {
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is.close();
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}
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}
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return Unpooled.wrappedBuffer(decompressed);
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}
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}
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202
license/LICENSE.zstd-jni.txt
Normal file
202
license/LICENSE.zstd-jni.txt
Normal file
@ -0,0 +1,202 @@
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Apache License
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||||
Version 2.0, January 2004
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https://www.apache.org/licenses/
|
||||
|
||||
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
|
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|
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"License" shall mean the terms and conditions for use, reproduction,
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|
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APPENDIX: How to apply the Apache License to your work.
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|
||||
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|
||||
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||||
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|
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|
||||
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|
||||
6
pom.xml
6
pom.xml
@ -677,6 +677,12 @@
|
||||
<artifactId>lzma-java</artifactId>
|
||||
<version>1.3</version>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>com.github.luben</groupId>
|
||||
<artifactId>zstd-jni</artifactId>
|
||||
<version>1.5.0-2</version>
|
||||
<optional>true</optional>
|
||||
</dependency>
|
||||
<dependency>
|
||||
<groupId>com.aayushatharva.brotli4j</groupId>
|
||||
<artifactId>brotli4j</artifactId>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user