org.apache.avro.file.ZstandardLoader 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
*
* 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.Zstd;
import com.github.luben.zstd.ZstdInputStream;
import com.github.luben.zstd.ZstdOutputStream;
/* 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) throws IOException {
return new ZstdInputStream(compressed);
}
static OutputStream output(OutputStream compressed, int level, boolean checksum) throws IOException {
int bounded = Math.max(Math.min(level, Zstd.maxCompressionLevel()), Zstd.minCompressionLevel());
ZstdOutputStream zstdOutputStream = new ZstdOutputStream(compressed, bounded);
zstdOutputStream.setCloseFrameOnFlush(false);
zstdOutputStream.setChecksum(checksum);
return zstdOutputStream;
}
}