| /* |
| * 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 org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream; |
| import org.apache.commons.compress.compressors.bzip2.BZip2CompressorOutputStream; |
| import org.apache.commons.io.output.ByteArrayOutputStream; |
| |
| import java.io.ByteArrayInputStream; |
| |
| |
| /** |
| * bzip2 compressor, faster compression efficiency |
| * |
| * @link https://commons.apache.org/proper/commons-compress/ |
| */ |
| public class Bzip2 implements Compressor, DeCompressor { |
| |
| public static final String BZIP2 = "bzip2"; |
| |
| @Override |
| public String getMessageEncoding() { |
| return BZIP2; |
| } |
| |
| @Override |
| public byte[] compress(byte[] payloadByteArr) throws RpcException { |
| if (null == payloadByteArr || 0 == payloadByteArr.length) { |
| return new byte[0]; |
| } |
| |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| BZip2CompressorOutputStream cos; |
| try { |
| cos = new BZip2CompressorOutputStream(out); |
| cos.write(payloadByteArr); |
| cos.close(); |
| } catch (Exception e) { |
| throw new IllegalStateException(e); |
| } |
| |
| return out.toByteArray(); |
| } |
| |
| @Override |
| public byte[] decompress(byte[] payloadByteArr) { |
| if (null == payloadByteArr || 0 == payloadByteArr.length) { |
| return new byte[0]; |
| } |
| |
| ByteArrayOutputStream out = new ByteArrayOutputStream(); |
| ByteArrayInputStream in = new ByteArrayInputStream(payloadByteArr); |
| try { |
| BZip2CompressorInputStream unZip = new BZip2CompressorInputStream(in); |
| byte[] buffer = new byte[2048]; |
| int n; |
| while ((n = unZip.read(buffer)) >= 0) { |
| out.write(buffer, 0, n); |
| } |
| } catch (Exception e) { |
| throw new IllegalStateException(e); |
| } |
| return out.toByteArray(); |
| } |
| } |