dubbo Gzip 源码
dubbo Gzip 代码
文件路径：/dubbo-rpc/dubbo-rpc-triple/src/main/java/org/apache/dubbo/rpc/protocol/tri/compressor/Gzip.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.rpc.protocol.tri.compressor;
import org.apache.dubbo.rpc.RpcException;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
/**
* gzip compressor
*/
public class Gzip implements Compressor, DeCompressor {
public static final String GZIP = "gzip";
@Override
public String getMessageEncoding() {
return GZIP;
}
@Override
public byte[] compress(byte[] payloadByteArr) throws RpcException {
if (null == payloadByteArr || 0 == payloadByteArr.length) {
return new byte[0];
}
ByteArrayOutputStream byteOutStream = new ByteArrayOutputStream();
try (GZIPOutputStream gzipOutputStream = new GZIPOutputStream(byteOutStream)) {
gzipOutputStream.write(payloadByteArr);
} catch (Exception exception) {
throw new IllegalStateException(exception);
}
return byteOutStream.toByteArray();
}
@Override
public byte[] decompress(byte[] payloadByteArr) throws RpcException {
if (null == payloadByteArr || 0 == payloadByteArr.length) {
return new byte[0];
}
ByteArrayInputStream byteInStream = new ByteArrayInputStream(payloadByteArr);
ByteArrayOutputStream byteOutStream = new ByteArrayOutputStream();
try (GZIPInputStream gzipInputStream = new GZIPInputStream(byteInStream)) {
int readByteNum;
byte[] bufferArr = new byte[256];
while ((readByteNum = gzipInputStream.read(bufferArr)) >= 0) {
byteOutStream.write(bufferArr, 0, readByteNum);
}
} catch (Exception exception) {
throw new IllegalStateException(exception);
}
return byteOutStream.toByteArray();
}
}
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