| /* |
| * 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 |
| * |
| * https://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.avro.file; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| |
| import com.github.luben.zstd.BufferPool; |
| import com.github.luben.zstd.NoPool; |
| import com.github.luben.zstd.RecyclingBufferPool; |
| import com.github.luben.zstd.Zstd; |
| import com.github.luben.zstd.ZstdInputStreamNoFinalizer; |
| import com.github.luben.zstd.ZstdOutputStreamNoFinalizer; |
| |
| /* causes lazier classloader initialization of ZStandard libraries, so that |
| * we get NoClassDefFoundError when we try and use the Codec's compress |
| * or decompress methods rather than when we instantiate it */ |
| final class ZstandardLoader { |
| |
| static InputStream input(InputStream compressed, boolean useBufferPool) throws IOException { |
| BufferPool pool = useBufferPool ? RecyclingBufferPool.INSTANCE : NoPool.INSTANCE; |
| return new ZstdInputStreamNoFinalizer(compressed, pool); |
| } |
| |
| static OutputStream output(OutputStream compressed, int level, boolean checksum, boolean useBufferPool) |
| throws IOException { |
| int bounded = Math.max(Math.min(level, Zstd.maxCompressionLevel()), Zstd.minCompressionLevel()); |
| BufferPool pool = useBufferPool ? RecyclingBufferPool.INSTANCE : NoPool.INSTANCE; |
| ZstdOutputStreamNoFinalizer zstdOutputStream = new ZstdOutputStreamNoFinalizer(compressed, pool).setLevel(bounded); |
| zstdOutputStream.setCloseFrameOnFlush(false); |
| zstdOutputStream.setChecksum(checksum); |
| return zstdOutputStream; |
| } |
| } |